1,688 results on '"Nobuyuki Tanaka"'
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152. MYANMAR, THE LAST FRONTIER OF FLORISTIC RESEARCH IN SE ASIA
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Nobuyuki Tanaka
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Frontier ,Geography ,Agroforestry ,General Medicine ,Floristics - Published
- 2020
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153. WNK regulates Wnt signalling and β-Catenin levels by interfering with the interaction between β-Catenin and GID
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Masahiro Shimizu, Atsushi Sato, Nobuyuki Tanaka, Hiroyuki Kagechika, Toshiyasu Goto, Hiroyuki Masuno, and Hiroshi Shibuya
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0301 basic medicine ,Male ,Lysine ,Regulator ,Medicine (miscellaneous) ,Protein Serine-Threonine Kinases ,medicine.disease_cause ,General Biochemistry, Genetics and Molecular Biology ,Article ,03 medical and health sciences ,Mice ,0302 clinical medicine ,Ubiquitin ,WNK Lysine-Deficient Protein Kinase 1 ,Cell Line, Tumor ,medicine ,Animals ,Humans ,Wnt Signaling Pathway ,lcsh:QH301-705.5 ,beta Catenin ,Cancer ,Mutation ,Mice, Inbred BALB C ,biology ,Chemistry ,Kinase ,urogenital system ,Wnt signaling pathway ,Ubiquitination ,Ubiquitin-Protein Ligase Complexes ,Growth factor signalling ,Ubiquitin ligase ,Cell biology ,030104 developmental biology ,lcsh:Biology (General) ,Ubiquitin ligases ,030220 oncology & carcinogenesis ,Catenin ,biology.protein ,General Agricultural and Biological Sciences - Abstract
β-Catenin is an important component of the Wnt signalling pathway. As dysregulation or mutation of this pathway causes many diseases, including cancer, the β-Catenin level is carefully regulated by the destruction complex in the Wnt signalling pathway. However, the mechanisms underlying the regulation of β-Catenin ubiquitination and degradation remain unclear. Here, we find that WNK (With No Lysine [K]) kinase is a potential regulator of the Wnt signalling pathway. We show that WNK protects the interaction between β-Catenin and the Glucose-Induced degradation Deficient (GID) complex, which includes an E3 ubiquitin ligase targeting β-Catenin, and that WNK regulates the β-Catenin level. Furthermore, we show that WNK inhibitors induced β-Catenin degradation and that one of these inhibitors suppressed xenograft tumour development in mice. These results suggest that WNK is a previously unrecognized regulator of β-Catenin and a therapeutic target of cancer., Sato et al. find that WNK (With No Lysine [K]) acts as a positive regulator of the Wnt signaling pathway by attenuating the interaction between β-Catenin and the Glucose Induce degradation Deficient (GID) complex, and show that a WNK inhibitor also functions as a Wnt inhibitor, suppressing xenograft tumor development in mice. These findings suggest that WNK is a regulator of β-Catenin and a potential therapeutic target
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- 2020
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154. Contribution to the Knowledge of the Lichen Mycota of Myanmar (I) Twenty Species Newly Recorded from Southern Myanmar
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Yoshihito Ohmura, Miyu Sugimoto, Mu Mu Aung, and Nobuyuki Tanaka
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inventory ,taxonomy ,its rdna ,lcsh:Biology (General) ,southeast asia ,distribution ,blast ,lcsh:QH301-705.5 ,lichenized fungi - Abstract
Specimens of lichens collected from southern Myanmar including Tanintharyi and Yangon Regions were examined. As the result of taxonomic examinations, the following 20 species were identified: Astrothelium macrocarpum, Bulbothrix subscortea, Coccocarpia erythroxyli, C. palmicola, Cruentotrema thailandicum, Dirinaria aegialita, D. consimilis, Dyplolabia afzelii, Flakea papillata, Glyphis cicatricosa, Graphis cf. caesiella, G. desquamescens, G. supracola, Malmidea bakeri, Physcia undulata, Pyrenula mamillana, Pyxine dactyloschmidtii, Sarcographa labyrinthica, Trypethelium eluteriae, and Zwackhia prosodea. All of them, except the two species of Coccocarpia, are new records for Myanmar. The ITS rDNA sequences were successfully obtained from 17 samples for 14 species. The BLAST identities for Myanmar collections with the same species in GenBank range from 89 to 100%.
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- 2020
155. Can random bladder biopsies be eliminated after bacillus Calmette–Guérin therapy against carcinoma in situ?
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Eiji Kikuchi, Nobuyuki Tanaka, Shinya Morita, Hiroshi Asanuma, Koichiro Ogihara, Kazuhiro Matsumoto, Kimiharu Takamatsu, Shuji Mikami, Takeo Kosaka, Toshikazu Takeda, Nozomi Hayakawa, Mototsugu Oya, Masafumi Oyama, and Ryuichi Mizuno
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Adult ,Male ,Nephrology ,medicine.medical_specialty ,Biopsy ,Urology ,030232 urology & nephrology ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Adjuvants, Immunologic ,Predictive Value of Tests ,Internal medicine ,Cytology ,medicine ,Humans ,Pathological ,Aged ,Retrospective Studies ,Aged, 80 and over ,Bladder cancer ,medicine.diagnostic_test ,business.industry ,Carcinoma in situ ,Papillary tumor ,Cystoscopy ,Middle Aged ,medicine.disease ,Urinary Bladder Neoplasms ,Bladder Biopsy ,BCG Vaccine ,Female ,business ,Carcinoma in Situ - Abstract
Intravesical bacillus Calmette–Guerin (BCG) is the standard of care for bladder carcinoma in situ (CIS). The response to BCG therapy against CIS is generally assessed by random bladder biopsy (RBB). In this study, we examined the necessity of routine RBB after BCG therapy. We retrospectively identified 102 patients who were initially diagnosed with CIS with or without papillary tumor and received subsequent 6–8-week BCG therapy. Thereafter, all patients underwent voiding cytology analysis, cystoscopy, and RBB to evaluate the effects of BCG therapy. We evaluated the association between clinical parameters (voiding cytology and cystoscopy findings) and the final pathological results by RBB specimens. According to the pathological results of RBB, 30 (29%) patients had BCG-unresponsive disease (remaining urothelial carcinoma was confirmed pathologically) and 20 were diagnosed with CIS. Positive/suspicious voiding cytology and positive cystoscopy findings were well observed in patients who had BCG-unresponsive disease compared with their counterparts (p = 0.116, and p
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- 2020
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156. Emissions of Volatile Organic Compounds from a Hen Shed in Japan
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Megumi Ohtsu, Akane Miyazaki, and Nobuyuki Tanaka
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lcsh:GE1-350 ,seasonal variation ,Atmospheric Science ,volatile organic compounds ,chemical composition ,emission rate ,lcsh:Environmental technology. Sanitary engineering ,hen ,lcsh:TD1-1066 ,lcsh:Environmental sciences ,General Environmental Science - Abstract
To clarify the emissions of volatile organic compounds (VOCs) from hen rearing in Japan, we collected air samples from inside a hen shed for the four seasons in 2019 and analyzed 34 VOCs in the air samples by gas chromatography-mass spectrometry and high performance liquid chromatography. The temperature and humidity inside and outside of the shed were monitored simultaneously during each sampling campaign. The average concentrations of VOCs in the shed ranged from 150 to 427 μg m-3, the concentrations being higher in summer and lower in winter. Acetone, dimethyl sulfide, 2-butanone, 2-pentanone, and acetic acid were dominant throughout all the seasons and these five compounds accounted for 70-89% of the total VOCs. The reactivity of each VOC with hydroxyl radical was also calculated and dimethyl sulfide was found to be the most reactive VOC, accounting for 84-94% of the total hydroxyl radical reactivity. The emission rate (ER) for the total VOCs (μg h-1 kg-1) was 602 in winter, 7,900 in spring, 46,500 in summer and 37,600 in autumn, respectively. Acetone, dimethyl sulfide, 2-butanone, 3-pentanone and acetic acid had higher ERs throughout all the seasons, and these five components accounted for 70-90% of the ERs for the total VOCs. The ERs of the VOCs increased exponentially in accord with temperature increases inside the shed, indicating that the ERs of the VOCs depended on the ambient temperature. The annual VOC emission from one hen and from the hen shed was calculated to be 405 g y-1 and 121 kg y-1, respectively.
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- 2020
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157. Vacuum microcasting of 2-methacryloyloxyethyl phosphorylcholine polymer for stable cell patterning
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Shun-ichi Funano, Nobuyuki Tanaka, Yo Tanaka, Miki Ebisuya, Ryoji Sekine, Asako Sato, and Núria Taberner Carretero
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0301 basic medicine ,Fabrication ,Materials science ,Vacuum ,Polymers ,Surface Properties ,Phosphorylcholine ,02 engineering and technology ,medicine.disease_cause ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,chemistry.chemical_compound ,Mold ,Cell Adhesion ,medicine ,Humans ,Dimethylpolysiloxanes ,Cell adhesion ,chemistry.chemical_classification ,Polydimethylsiloxane ,Polymer ,021001 nanoscience & nanotechnology ,Cell patterning ,030104 developmental biology ,chemistry ,Chemical engineering ,Cell culture ,Methacrylates ,0210 nano-technology ,Biotechnology - Abstract
This study demonstrates the rapid fabrication and utility of 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer film for cell patterning. The film was obtained on a cell culture surface by microcasting MPC polymer ethanol solution into a degassed polydimethylsiloxane mold with a desired pattern. After removal of the mold, 293AD cells were cultured on the surface of the polymer film with the patterned microstructures. Patterned cell adhesion restricted by the film was successfully maintained during at least a 168-h cultivation. The microcast MPC polymer film can be prepared rapidly and used for efficient long-term cell confinement.
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- 2020
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158. Evaluating the Oncological Outcomes of Pure Laparoscopic Radical Nephroureterectomy Performed for Upper-Tract Urothelial Carcinoma Patients: A Multicenter Cohort Study Adjusted by Propensity Score Matching
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Masashi Matsushima, Toshikazu Takeda, Kazuhiro Matsumoto, Nobuyuki Tanaka, Keisuke Shigeta, Mototsugu Oya, Hiroshi Asanuma, Eiji Kikuchi, Gou Kaneko, Takayuki Abe, Seiya Hattori, and Ryuichi Mizuno
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Urologic Neoplasms ,medicine.medical_specialty ,Urology ,Nephroureterectomy ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Ureter ,medicine ,Humans ,Propensity Score ,Laparoscopy ,Survival rate ,Retrospective Studies ,Bladder cancer ,medicine.diagnostic_test ,Ureteral Neoplasms ,business.industry ,Sigmoid colon ,Ureteral cancer ,medicine.disease ,medicine.anatomical_structure ,Oncology ,030220 oncology & carcinogenesis ,Propensity score matching ,Female ,030211 gastroenterology & hepatology ,Surgery ,business ,Cohort study - Abstract
To evaluate the oncological feasibility of pure laparoscopic radical nephroureterectomy (p-LRNU) for upper tract urothelial carcinoma (UTUC) compared with conventional LRNU (c-LRNU) using a propensity-adjusted multi-institutional collaboration dataset. Among the 503 UTUC patients who underwent RNU, we identified 219 who underwent c-LRNU (laparoscopic nephrectomy with open bladder cuff resection) and 72 who underwent p-LRNU (dissecting the kidney, ureter, and bladder cuff under complete laparoscopy). We adopted a propensity score (PS) matching method to achieve homogeneity with respect to patient backgrounds. PS matching-adjusted Cox-regression analysis was performed to evaluate the risk factors that influenced oncological outcomes. Sixty-eight p-LRNU and 68 c-LRNU patients were matched. Overall, 51 (37.0%) developed intravesical recurrence (IVR), 21 (15.4%) had disease recurrence, and 20 (14.7%) died. Patients who underwent p-LRNU had a significantly shorter operation time and less blood loss than those who underwent c-LRNU. Although no significant differences in 3-year recurrence-free survival were found between the two methods, atypical recurrence sites were observed in the p-LRNU group, including the brain, sigmoid colon, vagina, and peritoneum. Regarding IVR, the 3-year IVR-free survival rate was 41.8% in the p-LRNU group, which was significantly lower than that in the c-LRNU group (66.6%, p = 0.004). Multivariate analysis demonstrated that a history of bladder cancer, ureteral cancer, and p-LRNU were independent risk factors for subsequent IVR. Although p-LRNU is less invasive, the current technique may increase the incidence of atypical disease recurrence and subsequent IVR due to extravesical and intravesical tumor dissemination.
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- 2020
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159. Significance of tumor microenvironment in acquiring resistance to vascular endothelial growth factor‐tyrosine kinase inhibitor and recent advance of systemic treatment of clear cell renal cell carcinoma
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Yasunori Okada, Mototsugu Oya, Ryuichi Mizuno, Naoto Kuroda, Takeo Kosaka, Shuji Mikami, Yoji Nagashima, and Nobuyuki Tanaka
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Vascular Endothelial Growth Factor A ,0301 basic medicine ,Pathology ,medicine.medical_specialty ,medicine.drug_class ,Angiogenesis ,medicine.medical_treatment ,Tyrosine-kinase inhibitor ,Pathology and Forensic Medicine ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Tumor Microenvironment ,medicine ,Humans ,Molecular Targeted Therapy ,Carcinoma, Renal Cell ,Immune Checkpoint Inhibitors ,Protein Kinase Inhibitors ,PI3K/AKT/mTOR pathway ,Tumor microenvironment ,business.industry ,TOR Serine-Threonine Kinases ,General Medicine ,Immunotherapy ,Protein-Tyrosine Kinases ,medicine.disease ,Kidney Neoplasms ,Vascular endothelial growth factor ,Clear cell renal cell carcinoma ,030104 developmental biology ,chemistry ,Drug Resistance, Neoplasm ,Tumor progression ,030220 oncology & carcinogenesis ,Cancer research ,Angiogenesis Inducing Agents ,business - Abstract
The development of systemic therapies, including vascular endothelial growth factor-tyrosine kinase inhibitors (VEGF-TKI) and mammalian target of rapamycin (mTOR) inhibitors, represents a major breakthrough in the treatment of patients with renal cell carcinoma (RCC). However, inherent resistance is observed in some patients and acquired resistance commonly develops in many patients within several months of the initiation of systemic therapies. Since these treatments rarely cure patients, their aim is to suppress tumor progression and prolong survival. Therefore, the establishment of dependable criteria that predict responses and resistance to systemic therapies is clinically important, and the underlying molecular mechanisms also need to be elucidated for the future development of more effective therapies. We herein review recent advances in research on the molecular mechanisms underlying resistance, with a focus on morphological characteristics, tumor angiogenesis, and the tumor immune microenvironment in RCC and their relationships with VEGF-TKI treatments. Recent therapies using immune checkpoint inhibitors (ICI) and newly developed VEGF-TKI also appear to be effective for advanced RCC, with stable and durable responses to ICI being observed in some RCC patients. These new drugs and their outcomes have been briefly described.
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- 2020
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160. Hydriodic iodide and iodine permeation characteristics of fluoropolymers as a lining material
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Hiroki Noguchi, Nobuyuki Tanaka, Shinji Kubo, Hiroaki Takegami, and Yu Kamiji
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chemistry.chemical_classification ,Materials science ,Renewable Energy, Sustainability and the Environment ,Vapor pressure ,Iodide ,Energy Engineering and Power Technology ,chemistry.chemical_element ,02 engineering and technology ,Permeation ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Iodine ,01 natural sciences ,0104 chemical sciences ,Corrosion ,Fuel Technology ,Membrane ,chemistry ,Chemical engineering ,Permeability (electromagnetism) ,Empirical formula ,0210 nano-technology - Abstract
The thermochemical water-splitting iodine–sulfur (IS) process requires corrosion-resistant materials owing to usage of corrosive fluids, such as a mixture of HI–I2–H2O. Fluoropolymers, such as PTFE and PFA, are adaptable as lining materials for protecting plant components. However, there has been a concern: PTFE and PFA have the ability to permeate various permeants. From the viewpoint of corrosion of the base material, the permeation characteristics of HI and I2 should be evaluated to improve the integrity of the IS process. In this study, permeation tests on PTFE and PFA membranes were performed to measure the permeated fluxes of HI and I2, and the effects of the operating conditions on them were investigated. The introduction of a permeability parameter could be successful for normalizing the permeated fluxes for a specific membrane thickness and a vapor pressure. Then, the empirical formula of the permeability was given as an Arrhenius-type equation to use as a plant design. Finally, based on the results, the proper conditions for design of a lining material for the inhibition of HI and I2 permeation are summarized.
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- 2020
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161. Taxonomic studies on Zingiberaceae of Myanmar II: Curcuma stolonifera (Subgenus Ecomatae), a new species from the northwestern region
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Nobuyuki Tanaka, Mu Mu Aung, Akiyo Naiki, and Kate Armstrong
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0106 biological sciences ,Bract ,biology ,Plant Science ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Rhizome ,Stolonifera ,Inflorescence ,Botany ,Zingiberaceae ,Curcuma ,Subgenus ,Ecology, Evolution, Behavior and Systematics ,010606 plant biology & botany - Abstract
In the course of taxonomic studies on Zingiberaceae in Myanmar, a new species of Curcuma assignable to subgenus Ecomatae was discovered in Htamanthi Wildlife Sanctuary, Sagaing Region, northwestern Myanmar. It is described and illustrated here as Curcuma stolonifera. This new species differs from other species in subgenus Ecomatae Skornick. & Sida f. in having a combination of the following characters; long creeping rhizomes, an oblong-lanceolate lamina with reddish midrib, a small number of green bracts, a central inflorescence, pale whitish yellow flowers, and a short slightly L-shaped anther with a curved spur.
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- 2020
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162. Overvoltage reduction in membrane Bunsen reaction for hydrogen production by using a radiation-grafted cation exchange membrane and porous Au anode
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Haruyuki Nishijima, Takehiro Kimura, Nobuyuki Tanaka, Tetsuya Yamaki, Takehide Kodaira, Shin-ichi Sawada, Shin-ichiro Imabayashi, Mikihiro Nomura, and Shinji Kubo
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Materials science ,Hydrogen ,Renewable Energy, Sustainability and the Environment ,Energy Engineering and Power Technology ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Electrochemistry ,01 natural sciences ,0104 chemical sciences ,Anode ,Fuel Technology ,Membrane ,chemistry ,Chemical engineering ,Bunsen reaction ,Proton transport ,Water splitting ,0210 nano-technology ,Hydrogen production - Abstract
An electrochemical membrane Bunsen reaction using a cation exchange membrane (CEM) is a key to achieving iodine-sulfur (IS) thermochemical water splitting for the mass-production of hydrogen. In this study, we prepared a radiation-grafted CEM with a high ion exchange capacity (IEC) and a highly-porous Au-electroplated anode, and then used them for the membrane Bunsen reaction to reduce cell overvoltage. The high ionic content of our CEM led to low resistivity for proton transport, while the high porosity of the electrode led to a large effective surface area for anodic SO2 oxidation. The cell overvoltage for the membrane Bunsen reaction was significantly reduced to 0.21 V at 200 mA/cm2, one-third of that achieved using a commercial CEM and non-porous anode. From the analysis of the current-voltage characteristics, the grafted CEM was demonstrated to play a dominant role in the overvoltage reduction compared to the porous Au anode.
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- 2020
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163. External validation of the 'optimal PSA follow-up schedule after radical prostatectomy' in a new cohort
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Hiroshi Asanuma, Toshiaki Shinojima, Shinya Morita, Yoshinori Yanai, Kazuhiro Matsumoto, Takeo Kosaka, Toshikazu Takeda, Mototsugu Oya, Nobuyuki Tanaka, and Ryuichi Mizuno
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Male ,0301 basic medicine ,Biochemical recurrence ,Schedule ,PSA Measurement ,medicine.medical_specialty ,medicine.medical_treatment ,Urology ,urologic and male genital diseases ,Asymptomatic ,03 medical and health sciences ,0302 clinical medicine ,Biomarkers, Tumor ,medicine ,Humans ,Retrospective Studies ,Prostatectomy ,business.industry ,breakpoint cluster region ,External validation ,Prostatic Neoplasms ,Hematology ,General Medicine ,Prostate-Specific Antigen ,030104 developmental biology ,Oncology ,030220 oncology & carcinogenesis ,Cohort ,Kallikreins ,Surgery ,Neoplasm Recurrence, Local ,medicine.symptom ,business ,Follow-Up Studies - Abstract
Biochemical recurrence (BCR) after radical prostatectomy (RP) is most commonly diagnosed by detecting an increase in asymptomatic prostate-specific antigen (PSA). We previously reported the “optimal PSA follow-up schedule after RP”. The aim of this study was to confirm the usefulness and safety of that follow-up schedule in another cohort. We retrospectively reviewed the clinicopathological data of 798 consecutive patients who underwent radical prostatectomy between 2009 and 2017. We examined all PSA values measured during follow-up. Furthermore, we estimated the PSA value when we observed the “optimal PSA follow-up schedule” at each timing in the virtual follow-up. BCR was defined as an elevation of PSA to greater than 0.2 ng/ml, and the ideal PSA range for detection of BCR was regarded to be 0.2–0.4 ng/ml. During the mean follow-up period of 5.8 years, BCR occurred in 115 (14.9%) patients and the frequency of virtual follow-up was significantly lower than the actual frequency. However, overlooking of BCR (detecting BCR when PSA exceeded 0.4 ng/ml) was observed in 17 patients, which is higher than the actual frequency of overlooking (12 patients). Therefore, we modified the follow-up schedule, which could achieve the lower follow-up frequency and a limited number of overlooking of BCR (7 patients). This external validation study revealed that the "modified optimal PSA follow-up schedule after RP" can reduce the frequency of PSA measurement with a limited risk of overlooking BCR.
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- 2020
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164. Cochlear supporting cells function as macrophage-like cells and protect audiosensory receptor hair cells from pathogens
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Yasushi Kawaguchi, Tatsuya Katsuno, Toshiki Himeda, Shin-ichiro Kitajiri, Hidenori Suzuki, Naoto Koyanagi, Atsuko Tanimura, Mitsutoshi Yoneyama, Takashi Fujita, Wataru Nakajima, Satoshi Koike, Nobuyuki Tanaka, Hiroki Kato, Yushi Hayashi, Ikuno Uehara, and Koji Onomoto
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Lipopolysaccharides ,Phagocytosis ,Adaptive immunity ,Sensory systems ,lcsh:Medicine ,Saccharomyces cerevisiae ,Biology ,Article ,Mice ,Immune system ,Organ Culture Techniques ,Interferon ,Theilovirus ,medicine ,Escherichia coli ,Macrophage ,Animals ,Inner ear ,lcsh:Science ,Cochlea ,Spiral ganglion ,Mice, Inbred ICR ,Multidisciplinary ,Hair Cells, Auditory, Inner ,integumentary system ,Macrophages ,lcsh:R ,Labyrinth Supporting Cells ,Interferon-alpha ,Stria Vascularis ,Antimicrobial responses ,Interferon-beta ,Immunity, Innate ,Cell biology ,Hair Cells, Auditory, Outer ,medicine.anatomical_structure ,Animals, Newborn ,nervous system ,Spiral ligament ,lcsh:Q ,sense organs ,Spiral Ganglion ,medicine.drug - Abstract
To protect the audiosensory organ from tissue damage from the immune system, the inner ear is separated from the circulating immune system by the blood-labyrinth barrier, which was previously considered an immune-privileged site. Recent studies have shown that macrophages are distributed in the cochlea, especially in the spiral ligament, spiral ganglion, and stria vascularis; however, the direct pathogen defence mechanism used by audiosensory receptor hair cells (HCs) has remained obscure. Here, we show that HCs are protected from pathogens by surrounding accessory supporting cells (SCs) and greater epithelial ridge (GER or Kölliker’s organ) cells (GERCs). In isolated murine cochlear sensory epithelium, we established Theiler’s murine encephalomyelitis virus, which infected the SCs and GERCs, but very few HCs. The virus-infected SCs produced interferon (IFN)-α/β, and the viruses efficiently infected the HCs in the IFN-α/β receptor-null sensory epithelium. Interestingly, the virus-infected SCs and GERCs expressed macrophage marker proteins and were eliminated from the cell layer by cell detachment. Moreover, lipopolysaccharide induced phagocytosis of the SCs without cell detachment, and the SCs phagocytosed the bacteria. These results reveal that SCs function as macrophage-like cells, protect adjacent HCs from pathogens, and provide a novel anti-infection inner ear immune system.
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- 2020
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165. Appropriate timing for a biochemical evaluation after adrenalectomy for unilateral aldosterone‐producing adenoma
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Hiroshi Itoh, Takeo Kosaka, Toshikazu Takeda, Kimiharu Takamatsu, Mototsugu Oya, Kazuhiro Matsumoto, Ryuichi Mizuno, Isao Kurihara, Shinya Morita, Nobuyuki Tanaka, Toshiaki Shinojima, Seiya Hattori, Hiroshi Asanuma, and Eiji Kikuchi
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Adenoma ,medicine.medical_specialty ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Aldosterone producing adenoma ,Urology ,Renal function ,030209 endocrinology & metabolism ,Context (language use) ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Endocrinology ,Internal medicine ,Hyperaldosteronism ,Humans ,Medicine ,Endocrine system ,Aldosterone ,Retrospective Studies ,business.industry ,Adrenalectomy ,medicine.disease ,chemistry ,Serum potassium ,030220 oncology & carcinogenesis ,Hypertension ,business - Abstract
CONTEXT The oversecretion of plasma aldosterone by unilateral aldosterone-producing adenoma (APA) can be cured by adrenalectomy. However, the time needed for the endocrine environment to normalize remains unclear. OBJECTIVE To clarify adequate timing for a biochemical evaluation in unilateral APA patients after adrenalectomy. DESIGN AND PATIENTS A total of 166 unilateral APA patients were retrospectively reviewed. We evaluated the plasma aldosterone concentration (PAC) (pg/mL), active renin concentration (ARC) (pg/mL), aldosterone-renin ratio (ARR; PAC/ARC), serum potassium concentration and estimated glomerular filtration rate (eGFR) at 1, 3 and 6 postoperation months (POM). RESULTS PAC was significantly lower at 1POM than at presurgery (presurgery; 407.2, 1 POM; 90.0 pg/mL, P
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- 2020
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166. Plasticity induction in the pre-supplementary motor area (pre-SMA) and SMA-proper differentially affects visuomotor sequence learning
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Ritsuko Hanajima, Yasuo Terao, Yuichiro Shirota, Ryosuke Tsutsumi, Masashi Hamada, Nobuyuki Tanaka, Yoshikazu Ugawa, and Takahiro Shimizu
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Presupplementary motor area (pre-SMA) ,Adult ,Male ,Plasticity ,Movement ,medicine.medical_treatment ,Long-Term Potentiation ,Biophysics ,Stimulation ,Sequence learning ,050105 experimental psychology ,lcsh:RC321-571 ,Task (project management) ,03 medical and health sciences ,0302 clinical medicine ,Reaction Time ,medicine ,Humans ,Learning ,0501 psychology and cognitive sciences ,Supplementary motor area (SMA) ,lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry ,Supplementary motor area ,General Neuroscience ,05 social sciences ,Motor Cortex ,Long-term potentiation ,Evoked Potentials, Motor ,SMA ,Transcranial Magnetic Stimulation ,Transcranial magnetic stimulation ,medicine.anatomical_structure ,Female ,Neurology (clinical) ,Psychology ,Motor learning ,Neuroscience ,Psychomotor Performance ,030217 neurology & neurosurgery - Abstract
Background Both pre-supplementary motor area (pre-SMA) and SMA-proper (SMA) must play important roles in visuomotor sequence learning. However, functional differences between the pre-SMA and SMA have not been well studied in humans. Objective To elucidate the functional differences between the pre-SMA and SMA in sequence learning in humans. Methods To induce LTP/LTD, we administered quadripulse transcranial magnetic stimulation (QPS) with an inter-stimulus interval of 5 or 50 ms (QPS-5/50) over the pre-SMA or SMA in healthy volunteers. The sham stimulation was also done as a control. We studied the effects of LTP/LTD in the pre-SMA/SMA on a new sequence learning and the performance of well-learned sequence by using sequence learning task called the “2 × 10 task”. Effects on the simple choice reaction time task were also studied for comparison. Results QPS-5 over the pre-SMA increased the error rate without any changes in movement speed. When administered over the SMA, QPS-5 decreased, and QPS-50 increased the rate of reaction time reduction across trials without changes in the error rate. QPS over neither the pre-SMA nor SMA affected the performances of a well-learned sequence or a simple choice reaction time task. Conclusions Our findings that QPS over the pre-SMA correlated with sequence learning performance and that over the SMA with execution speed are consistent with the previous results in animals and humans. Our results lend further support to the utility of QPS for modulating motor learning in humans.
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- 2020
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167. Relationship between Essential Fatty Acid Composition of Sediments and Species Richness of Benthic Animals in Paddy Field Ecosystems
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Shinji Takahashi, Nobuyuki Tanaka, Chikako Maruo, Osamu Nishimura, Megumu Fujibayashi, and Yuki Osada
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chemistry.chemical_classification ,Essential fatty acid ,chemistry ,Benthic zone ,Ecology ,Paddy field ,Environmental science ,Ecosystem ,Composition (visual arts) ,Species richness - Published
- 2020
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168. Contributions to the Flora of Myanmar V: a new record of Mallotus tokiae (Euphorbiaceae) with the description of flower morphology from Lampi Island
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Shuichiro Tagane, Hironori Toyama, Tetsukazu Yahara, Hidetoshi Nagamasu, Akiyo Naiki, Swe Swe Win, Somran Suddee, Nobuyuki Tanaka, Mu Mu Aung, and Ai Nagahama
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Flora ,biology ,Botany ,Euphorbiaceae ,Mallotus ,Forestry ,Morphology (biology) ,Plant Science ,biology.organism_classification ,DNA barcoding ,Ecology, Evolution, Behavior and Systematics - Abstract
Mallotus tokiae (Euphorbiaceae), a poorly known species, was described based upon a single fruiting specimen from Surat Thani Province, peninsular Thailand. We found this species with staminate and slightly mature pistillate flowers in Lampi Island, Myanmar. A new locality record, description of flowers, preliminary conservation assessment and DNA barcoding of this species are provided.
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- 2020
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169. Impact of prostatic shape on the difficulty of robot-assisted laparoscopic radical prostatectomy
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Ken Kamisawa, Kazuhiro Matsumoto, Toshikazu Takeda, Kimiharu Takamatsu, Naoya Niwa, Yota Yasumizu, Nobuyuki Tanaka, Shinya Morita, Takeo Kosaka, Ryuichi Mizuno, Hiroshi Asanuma, and Mototsugu Oya
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BackgroundTo investigate the impact of prostatic shape observed on preoperative magnetic resonance imaging (MRI) on the difficulty of robot-assisted laparoscopic radical prostatectomy (RALP).MethodsWe retrospectively reviewed the operative records of 211 patients who underwent RALP. We excluded patients who received neoadjuvant therapy. All surgeries in this study were performed by two surgeons. Each patient clinicopathological and surgical data were reviewed. Prostate sphericity was evaluated by measuring the roundness of the prostate at the largest axial slice by MRI. The console time was adopted as an objective indicator for assessing surgical difficulty.Results The mean prostate volume was 34 cc (range 14 to 88) and the mean prostate roundness was 0.55 (range 0.24 to 0.90). The mean console time was 194 minutes (range 95 to 296). To assess the relationship between prostate volume and console time, scatter plot analysis was performed. The prostate volume had a weak positive correlation with the console time (r =0.165, p=0.016). Similarly, scatter plot analysis between the prostate roundness and console time demonstrated a weak positive correlation (r =0.167, p=0.015) . Next, we performed subgroup analysis of 56 patients with a large prostate volume (≥ 40 cc), and the positive correlation between the prostate volume and the console time disappeared (r =0.142, p=0.296). On the other hand, the prostate roundness was more strongly correlated with the console time (r =0.439, p=0.001).ConclusionsOur results indicated that the spherical shape of the prostate is associated with the surgical difficulty of RALP, especially in patients with a large prostate volume.
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- 2022
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170. Predictors of renal function after adrenalectomy in patients with Cushing or subclinical Cushing syndrome
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Ryohei Kufukihara, Toshikazu Takeda, Kyohei Hakozaki, Yota Yasumizu, Nobuyuki Tanaka, Kazuhiro Matsumoto, Shinya Morita, Takeo Kosaka, Ryuichi Mizuno, Hiroshi Asanuma, Kazutoshi Miyashita, Isao Kurihara, and Mototsugu Oya
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Adrenocorticotropic Hormone ,Urology ,Humans ,Adrenalectomy ,Renal Insufficiency ,Kidney ,Cushing Syndrome ,Retrospective Studies - Abstract
The postoperative course of renal function remains unclear in Cushing syndrome. We examined changes in renal function after adrenalectomy in patients with Cushing syndrome and attempted to identify predictors of renal impairment.The study population comprised 76 patients who underwent adrenalectomy for Cushing and subclinical Cushing syndrome between 2001 and 2018. Renal function and other factors were evaluated pre-operation, at 1 postoperative month, and 1 postoperative year. We defined a ≥10% decrease in the estimated glomerular filtration rate at 1 postoperative year as renal impairment, and predictors associated with this reduction were investigated. The relationship between renal function and steroid replacement after surgery was also examined.Mean pre-operative estimated glomerular filtration rate was 82.2 ml/min/1.73 mThe pre-operative adrenocorticotropic hormone level was a predictor of renal function after adrenalectomy in patients with Cushing or subclinical Cushing syndrome.
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- 2022
171. Endoscopic vaporization of benign prostatic hyperplasia using a contact 980 nm diode laser under antithrombotic therapy: A prospective survey
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Tansei Sanjo, Nobuyuki Tanaka, Toshiaki Shinojima, Yota Yasumizu, Toshikazu Takeda, Kazuhiro Matsumoto, Shinya Morita, Takeo Kosaka, Ryuichi Mizuno, Hiroshi Asanuma, and Mototsugu Oya
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Male ,Treatment Outcome ,Fibrinolytic Agents ,Prostatic Hyperplasia ,Quality of Life ,Transurethral Resection of Prostate ,Humans ,General Medicine ,Laser Therapy ,Prospective Studies ,Lasers, Semiconductor ,Volatilization - Abstract
To prospectively clarify whether endoscopic contact laser vaporization of the prostate (CVP) can be safely performed even in patients undergoing antithrombotic therapy.Fifty-five patients treated with CVP were enrolled. Patients were assigned to: (i) the antithrombotic therapy group (n = 21, 38%); or (ii) control group without antithrombotic therapy (n = 34, 62%). All patients in the antithrombotic therapy group continued all antithrombotic agents during the perioperative period and thereafter.No difference was noted in patient background between the two groups. In primary endpoints, decreases in the postoperative hemoglobin level were remarkable in the antithrombotic therapy group, while no serious effects were noted in either group. The control and antithrombotic therapy groups did not show a significant difference in the occurrence of catheter obstruction due to blood clots or serious hematuria following catheter removal. During follow-up, transurethral coagulation for hemostasis was needed only in the antithrombotic therapy group, with a frequency of transurethral coagulation of up to 14%. In secondary endpoints, no difference in the occurrence of perioperative or late-onset complications after surgery was noted between the two groups. Finally, no difference was noted in improvements in the International Prostate Symptom Score (IPSS), IPSS quality of life score, overactive bladder symptom score, maximum flow rate, or post-voiding residual urine volume between the two groups throughout the follow-up period.CVP can be performed safely and effectively in patients undergoing continuous antithrombotic therapy. However, the possibility of secondary bleeding after discharge in a subset of patients, such as those undergoing antithrombotic therapy, may be noted.
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- 2022
172. Unique characteristics of tertiary lymphoid structures in kidney clear cell carcinoma: prognostic outcome and comparison with bladder cancer
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Tsukasa Masuda, Nobuyuki Tanaka, Kimiharu Takamatsu, Kyohei Hakozaki, Ryohei Takahashi, Tadatsugu Anno, Ryohei Kufukihara, Kazunori Shojo, Shuji Mikami, Toshiaki Shinojima, Kazuhiro Kakimi, Tatsuhiko Tsunoda, Eriko Aimono, Hiroshi Nishihara, Ryuichi Mizuno, and Mototsugu Oya
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Pharmacology ,Cancer Research ,Immunology ,Programmed Cell Death 1 Receptor ,Forkhead Transcription Factors ,Kidney ,Prognosis ,B7-H1 Antigen ,Kidney Neoplasms ,Tertiary Lymphoid Structures ,Oncology ,Urinary Bladder Neoplasms ,Tumor Microenvironment ,Molecular Medicine ,Immunology and Allergy ,Humans ,Carcinoma, Renal Cell - Abstract
BackgroundThe aims of this study were (1) to clarify the impact of tertiary lymphoid structure (TLS) status on the outcome and immunogenomic profile of human clear cell renal cell carcinoma (ccRCC) and (2) to determine phenotypic differences in TLSs between different types of genitourinary cancer, that is, urinary ccRCC and bladder cancer.MethodsWe performed a quantitative immunohistological analysis of ccRCC tissue microarrays and conducted integrated genome mutation analysis by next-generation sequencing and methylation array analysis. Since the tumor immune microenvironment of ccRCC often differs from that of other cancer types, we analyzed the phenotypic differences in TLSs between ccRCC and in-house bladder cancer specimens.ResultsVarying distribution patterns of TLSs were observed throughout ccRCC tumors, revealing that the presence of TLSs was related to poor prognosis. An analysis of genomic alterations based on TLS status in ccRCC revealed that alterations in the PI3K-mTOR pathway were highly prevalent in TLS-positive tumors. DNA methylation profiling also revealed distinct differences in methylation signatures among ccRCC samples with different TLS statuses. However, the TLS characteristics of ccRCC and bladder cancer markedly differed: TLSs had the exact opposite prognostic impact on bladder cancer as on ccRCC. The maturity and spatial distribution of TLSs were significantly different between the two cancer types; TLSs were more mature with follicle-like germinal center organization and likely to be observed inside the tumor in bladder cancer. Labeling for CD8, FOXP3, PD-1, and PD-L1 showed marked differences in the diversity of the immune microenvironment surrounding TLSs. The proportions of CD8-, FOXP3-, and PD-L1-positive cells were significantly higher in TLSs in bladder cancer than in TLSs in ccRCC; rather the proportion of PD-1-positive cells was significantly higher in TLSs in ccRCC than in TLSs in bladder cancer.ConclusionThe immunobiology of ccRCC is unique, and various cancerous phenomena conflict with that seen in other cancer types; therefore, comparing the TLS characteristics between ccRCC and bladder cancer may help reveal differences in the prognostic impact, maturity and spatial distribution of TLSs and in the immune environment surrounding TLSs between the two cancers.
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- 2022
173. Global estimates of stress-reflecting indices reveal key climatic drivers of climate-induced forest range shifts
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Akiko, Hirata, Yuji, Kominami, Haruka, Ohashi, Ikutaro, Tsuyama, Nobuyuki, Tanaka, Katsuhiro, Nakao, Yasuaki, Hijioka, and Tetsuya, Matsui
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Shortwave solar radiation ,Environmental Engineering ,Temperature ,Environmental Chemistry ,Climate change ,Humidity index ,Physiological climatic stressors ,Forests ,Empirical modeling ,Pollution ,Waste Management and Disposal ,Droughts ,Trees - Abstract
Climate change has the potential to cause forest range shifts at a broad scale and consequently can alter crucial forest functions, including carbon sequestration. However, global-scale projections of future forest range shifts remain challenging because our knowledge of the physiological responses of plants to climatic stress is limited to particular species and is insufficient for wide-range projections, in addition to the uncertainties in the impacts of non-climatic factors, such as wildfire, wind, and insect outbreaks. To evaluate the vulnerability and resilience of forests to climate change, we developed a new empirical approach using climatic indices reflecting physiological stressors on plants. We calculated the global distributions of seven indices based on primary climatic stressors (drought, solar radiation, and temperature) at high resolution. We then modeled the relationship between the seven indices and global forest extent. We found two key stressors driving climate-induced forest range shifts on a global scale: low temperature under high radiation and drought. At high latitudes of the Northern Hemisphere, forest establishment became difficult when the mean temperature was less than approximately 7.2 °C in the highest radiation quarter. Forest sensitivity to drought was more pronounced at mid-latitudes. In areas where the humidity index (ratio of precipitation to potential evapotranspiration) was below 0.45, shrubland and grassland became more dominant than forests. Our results also suggested that the impacts of climate change on global forest range shifts will be geographically biased depending on the areas affected by the key climatic stressors. Potential forest gain was remarkable in boreal regions due to increasing temperature. Potential forest loss was remarkable in current tropical grassland and temperate forest/grassland ecoregions due to increasing drought. Our approach using stress-reflecting indices could improve our ability to detect the roles of climatic stressors on climate-induced forest range shifts.
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- 2022
174. Epigenetic Priming with Decitabine Augments the Therapeutic Effect of Cisplatin on Triple-Negative Breast Cancer Cells through Induction of Proapoptotic Factor NOXA
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Wataru Nakajima, Kai Miyazaki, Masahiro Sakaguchi, Yumi Asano, Mariko Ishibashi, Tomoko Kurita, Hiroki Yamaguchi, Hiroyuki Takei, and Nobuyuki Tanaka
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Cancer Research ,DNA methylation ,Oncology ,NOXA ,triple-negative breast cancer ,drug combination ,apoptosis ,cisplatin ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,decitabine ,Article ,RC254-282 - Abstract
Simple Summary Triple-negative breast cancer is a subset of breast cancer that occurs frequently in young women and tends to exhibit aggressive, metastatic behavior. The therapeutic molecular targets found in other types of breast cancer are absent; therefore, this type of cancer has a poorer prognosis. To search for effective treatments for this type of cancer, we analyzed the effect of the DNA-demethylating agent, decitabine, which is commonly used in patients with myelodysplastic syndrome. We found that in triple-negative breast cancer cell subtypes, inhibition of cell death and cell growth in response to cisplatin, which is used to treat metastatic breast cancer, is enhanced when used in combination with decitabine. We also found that in decitabine-refractory cell subtypes, cisplatin alone is effective at inducing cell death. These results indicate the possibility of effective new combination therapies in triple-negative breast cancers. Abstract Epigenetic alterations caused by aberrant DNA methylation have a crucial role in cancer development, and the DNA-demethylating agent decitabine, is used to treat hematopoietic malignancy. Triple-negative breast cancers (TNBCs) have shown sensitivity to decitabine; however, the underlying mechanism of its anticancer effect and its effectiveness in treating TNBCs are not fully understood. We analyzed the effects of decitabine on nine TNBC cell lines and examined genes associated with its cytotoxic effects. According to the effect of decitabine, we classified the cell lines into cell death (D)-type, growth inhibition (G)-type, and resistant (R)-type. In D-type cells, decitabine induced the expression of apoptotic regulators and, among them, NOXA was functionally involved in decitabine-induced apoptosis. In G-type cells, induction of the cyclin-dependent kinase inhibitor, p21, and cell cycle arrest were observed. Furthermore, decitabine enhanced the cytotoxic effect of cisplatin mediated by NOXA in D-type and G-type cells. In contrast, the sensitivity to cisplatin was high in R-type cells, and no enhancing effect by decitabine was observed. These results indicate that decitabine enhances the proapoptotic effect of cisplatin on TNBC cell lines that are less sensitive to cisplatin, indicating the potential for combination therapy in TNBC.
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- 2022
175. The Role of PRMT5 in Immuno-Oncology
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Yoshinori Abe, Takumi Sano, and Nobuyuki Tanaka
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Genetics ,Genetics (clinical) - Abstract
Immune checkpoint inhibitor (ICI) therapy has caused a paradigm shift in cancer therapeutic strategy. However, this therapy only benefits a subset of patients. The difference in responses to ICIs is believed to be dependent on cancer type and its tumor microenvironment (TME). The TME is favorable for cancer progression and metastasis and can also help cancer cells to evade immune attacks. To improve the response to ICIs, it is crucial to understand the mechanism of how the TME is maintained. Protein arginine methyltransferase 5 (PRMT5) di-methylates arginine residues in its substrates and has essential roles in the epigenetic regulation of gene expression, signal transduction, and the fidelity of mRNA splicing. Through these functions, PRMT5 can support cancer cell immune evasion. PRMT5 is necessary for regulatory T cell (Treg) functions and promotes cancer stemness and the epithelial–mesenchymal transition. Specific factors in the TME can help recruit Tregs, tumor-associated macrophages, and myeloid-derived suppressor cells into tumors. In addition, PRMT5 suppresses antigen presentation and the production of interferon and chemokines, which are necessary to recruit T cells into tumors. Overall, PRMT5 supports an immunosuppressive TME. Therefore, PRMT5 inhibition would help recover the immune cycle and enable the immune system-mediated elimination of cancer cells.
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- 2023
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176. The comprehensive analysis of relationship between gut microbiome and treatment outcome of androgen deprivation therapy (ADT)-based treatment in patients with metastatic castration-sensitive and -resistant prostate cancer
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Nobuaki Matsubara, Shunsuke Sakai, Riu Yamashita, Toshihiro Misumi, Masaki Shiota, Masatoshi Eto, Taigo Kato, Takahiro Osawa, Takashige Abe, Nobuo Shinohara, Koshiro Nishimoto, Yota Yasumizu, Nobuyuki Tanaka, Mototsugu Oya, Takao Fujisawa, Satoshi Horasawa, Yoshiaki Nakamura, Takayuki Yoshino, and Norio Nonomura
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Cancer Research ,Oncology - Abstract
213 Background: Preclinical and clinical data from various types of cancer show that the gut microbiome can affect the outcome of treatments with immune checkpoint inhibitors or cytotoxic chemotherapies. However, the relationship between the microbiome and treatment outcomes in prostate cancer has remained unclear. Here, we present a comprehensive analysis of the relationship between the gut microbiome and treatment outcomes from a nationwide genome screening project (MONSTAR-SCREEN 1) in patients with metastatic castration-sensitive and -resistant prostate cancer (mCSPC and mCRPC). Methods: We performed 16S rRNA gene sequencing of fecal DNA from 73 mCSPC and 83 mCRPC patients before treatment. The microbiome data were compared using the Wilcoxon-Mann-Whitney test or Fisher’s exact test. Survival status and therapeutic efficacy of ADT based treatment were prospectively collected and estimated using the Kaplan-Meier method, and the log-rank test was used to compare survival in different strata. Results: Fecal samples from mCRPC had more Klebsiella and Enterobacteriaceae than those from mCSPC, whereas mCSPC had more Akkermansia and Bifidobacterium compared to mCRPC. Prior and concurrent usage of anti-biotics did not affect diversity of the amplicon sequence variants (ASVs), KEGG orthology and metabolism pathway representation. Anti-biotics also did not influence time to treatment failure (TTF) in mCRPC (HR:0.81, 95%CI:0.36–1.78) and mCSPC (HR:1.35, 95%CI:0.55–3.34). mCRPC had more diverse KEGG orthology compared to mCSPC ( p=0.0009), however, no statistical differences were observed in the ASV ( p=0.77) and metabolism pathway representation ( p=0.35) between mCRPC and mCSPC. High ASV tended to be associated with longer TTF rather than low ASV in both mCRPC (Adjusted HR:0.63, 95%CI:0.34–1.10) and mCSPC (Adjusted HR:0.66, 95%CI:0.31–1.40). mCRPC patients with high AVS also showed significant longer PSA-progression free survival than patients with low ASV (HR:053, 95%CI:0.28–0.99). Conclusions: This investigation revealed significant differences in the microbiome status of mCRPC compared to mCSPC. These differences and diversity might influence the outcomes of ADT based treatment in prostate cancer.
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- 2023
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177. Effects of baseline C-reactive protein on prognosis in patients with metastatic non-clear cell renal cell carcinoma treated with systemic therapy
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Ryuichi Mizuno, Yota Yasumizu, Nobuyuki Tanaka, Kazuhiro Matsumoto, and Mototsugu Oya
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Cancer Research ,Oncology - Abstract
680 Background: With the induction of targeted agents and immune checkpoint inhibitors, treatment strategies for systemic treatment of metastatic renal cell carcinoma (mRCC) have been changed with improved survival. However, those agents were approved based on phase 3 study results designed for clear cell mRCC. For patients with non-clear cell mRCC, those drugs designed for clear cell mRCC have also been used because no validated systemic therapy exists. This retrospective study aimed to identify patients with non-clear cell mRCC who benefit from systemic therapy. Methods: A total of 255 patients with mRCC were reviewed (Institutional review board approval No 2013-0425). Among them, 41 patients who pathologically diagnosed as non-clear cell mRCC and received systemic therapy were retrospectively analyzed. Clinical and pathological data were retrieved and analyzed retrospectively. The prognostic effect of each variable on progression free survival (PFS) and overall survival (OS) were investigated. OS for patients with non-clear cell mRCC was further investigated with univariate and multivariate Cox’s proportional hazards regression models. Results: After a median follow-up of 33.9 months after first line treatment initiation, the median PFS was 3.3 and 19.7 months for non-clear cell and clear cell RCC, respectively (p
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- 2023
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178. Noncontact impedance sensing.
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Tomohiro Kawahara, Kan'ichi Tokuda, Nobuyuki Tanaka, and Makoto Kaneko
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- 2006
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179. Mixed Mode Circuit Simulator SPLIT2.1 using Dynamic Network Separation and Selective Trace.
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Masakatsu Nishigaki, Nobuyuki Tanaka, and Hideki Asai
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- 1994
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180. Exploring the Potential Distribution of Relic Trochodendron aralioides: An Approach Using Open-Access Resources and Free Software
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Ching-An Chiu, Tetsuya Matsui, Nobuyuki Tanaka, and Cheng-Tao Lin
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Trochodendron aralioides ,free software ,open-access resources ,Forestry ,species distribution modeling ,MaxEnt ,QK900-989 ,Plant ecology - Abstract
Trochodendron aralioides Siebold & Zucc. is a relic tree that is discontinuously scattered across the mountainous areas of Japan, Taiwan, and South Korea, but the origin of T. aralioides in South Korea is still unclear and debated. To confirm its distribution and explore its origins, we constructed a streamlined framework to examine potential species distribution using multiple open access data and free and open-source software, as well as employing maximum entropy principles to predict the potential distribution of T. aralioides. The results showed reasonably good discrimination and were used to examine and discuss the explicit distribution of T. aralioides. The potential distribution of T. aralioides in Japan extended from Iriomote Island to approximately 37° N in Honshu on the Pacific Ocean side. In Taiwan, the potential distribution of T. aralioides was more common than in Japan. It occurred at 1500–3000 m a.s.l. across the Central Mountain Range and decreased toward the northern and southern tips, correlating to the descending pattern of the cloud belt. Thermal and moisture conditions were important factors to determine the distribution of T. aralioides. The potential distribution indicated that Jeju island had high potential as a habitat for T. aralioides, and that may indirectly imply its existence and origins in South Korea, as some researchers have noted.
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- 2021
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181. Oncogenic RAS Generates Cancer Stem Cells in p53-Deficient Fibroblasts Through SOX2 Induced By CDK1-Mediated Protein O-GlcNAcylation
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Masahiro Shimizu, Hiroshi Shibuya, and Nobuyuki Tanaka
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O glcnacylation ,Cyclin-dependent kinase 1 ,SOX2 ,Cancer stem cell ,Chemistry ,Cell biology - Abstract
Cancer stem cells (CSCs) have tumour initiation, self-renewal, and long-term tumour repopulation properties, and it is postulated that differentiated somatic cells can be reprogrammed to CSCs by oncogenic signals. We previously showed that oncogenic HRASV12 conferred tumour initiation capacity in tumour suppressor p53-deficient (p53−/−) primary mouse embryonic fibroblasts (MEFs) through transcription factor NF-κB-mediated enhancement of glucose uptake; however, the underlying mechanisms of RAS oncogene-induced CSC reprogramming have not been elucidated. Here, we found that the expression of the reprogramming factor SOX2 was induced by HRASV12 in p53−/− MEFs. Moreover, gene knockout studies revealed that SOX2 is an essential factor for the generation of CSCs by HRASV12 in mouse and human fibroblasts. We demonstrated that HRASV12-induced cyclin-dependent kinase 1 (CDK1) activity and subsequent enhancement of protein O-GlcNAcylation were required for SOX2 induction and CSC generation in these fibroblasts and cancer cell lines containing RAS mutations. Moreover, the CDK inhibitor dinaciclib and O-GlcNAcylation inhibitor OSMI1 reduced the number of CSCs derived from these cells. Taken together, our results reveal a signalling pathway and mechanism for CSC generation by oncogenic RAS and suggest the possibility that this signalling pathway is a therapeutic target for CSCs.
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- 2021
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182. Virus-infection in cochlear supporting cells induces audiosensory receptor hair cell death by TRAIL-induced necroptosis
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Satoshi Koike, Mitsutoshi Yoneyama, Nobuyuki Tanaka, Takashi Fujita, Atsuko Tanimura, Tatsuya Katsuno, Yushi Hayashi, Hidenori Suzuki, Ikuno Uehara, Wataru Nakajima, Koji Onomoto, Yasushi Kawaguchi, Naoto Koyanagi, Toshiki Himeda, Hiroki Kato, and Shin-ichiro Kitajiri
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Necrosis ,Social Sciences ,Apoptosis ,Epithelium ,TNF-Related Apoptosis-Inducing Ligand ,White Blood Cells ,Medical Conditions ,Animal Cells ,Medicine and Health Sciences ,Psychology ,Receptor ,Cells, Cultured ,Mice, Inbred ICR ,Multidisciplinary ,biology ,Cell Death ,medicine.anatomical_structure ,Cell Processes ,Virus Diseases ,Inner Ear ,Necroptosis ,Medicine ,Sensorineural hearing loss ,Sensory Perception ,Hair cell ,medicine.symptom ,Antibody ,Cellular Types ,Anatomy ,Research Article ,Science ,Immune Cells ,Inflammatory Diseases ,Hearing Loss, Sensorineural ,Immunology ,Microbiology ,Necrotic Cell Death ,Virology ,Hair Cells, Auditory ,medicine ,Animals ,Inner ear ,Blood Cells ,business.industry ,Macrophages ,Cognitive Psychology ,Biology and Life Sciences ,Cell Biology ,medicine.disease ,Biological Tissue ,Ears ,Cancer research ,biology.protein ,Cognitive Science ,Perception ,business ,Head ,Viral Transmission and Infection ,Neuroscience - Abstract
Although sensorineural hearing loss (SHL) is relatively common, its cause has not been identified in most cases. Previous studies have suggested that viral infection is a major cause of SHL, especially sudden SHL, but the system that protects against pathogens in the inner ear, which is isolated by the blood-labyrinthine barrier, remains poorly understood. We recently showed that, as audiosensory receptor cells, cochlear hair cells (HCs) are protected by surrounding accessory supporting cells (SCs) and greater epithelial ridge (GER or Kölliker’s organ) cells (GERCs) against viral infections. Here, we found that virus-infected SCs and GERCs induce HC death via production of the tumour necrosis factor-related apoptosis-inducing ligand (TRAIL). Notably, the HCs expressed the TRAIL death receptors (DR) DR4 and DR5, and virus-induced HC death was suppressed by TRAIL-neutralizing antibodies. TRAIL-induced HC death was not caused by apoptosis, and was inhibited by necroptosis inhibitors. Moreover, corticosteroids, the only effective drug for SHL, inhibited the virus-induced transformation of SCs and GERCs into macrophage-like cells and HC death, while macrophage depletion also inhibited virus-induced HC death. These results reveal a novel mechanism underlying virus-induced HC death in the cochlear sensory epithelium and suggest a possible target for preventing virus-induced SHL.
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- 2021
183. Landscape of prognostic signatures and immunogenomics of the AXL/GAS6 axis in renal cell carcinoma
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Yota Yasumizu, Eriko Aimono, Nobuyuki Tanaka, Kimiharu Takamatsu, Takashi Kamatani, Kazuhiro Kakimi, Mototsugu Oya, Hiroshi Nishihara, Kyohei Hakozaki, Tatsuhiko Tsunoda, Ryuichi Mizuno, Fuyuki Miya, Toshiaki Shinojima, Ryohei Takahashi, and Shuji Mikami
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Cancer Research ,Cabozantinib ,medicine.drug_class ,Tyrosine-kinase inhibitor ,Article ,Metastasis ,chemistry.chemical_compound ,Renal cell carcinoma ,Proto-Oncogene Proteins ,Immunogenetics ,Medicine ,Humans ,Carcinoma, Renal Cell ,business.industry ,GAS6 ,Receptor Protein-Tyrosine Kinases ,Methylation ,Middle Aged ,medicine.disease ,Prognosis ,Axl Receptor Tyrosine Kinase ,Oncology ,chemistry ,Cancer research ,Biomarker (medicine) ,Intercellular Signaling Peptides and Proteins ,business ,Clear cell - Abstract
Background Cabozantinib is an oral tyrosine kinase inhibitor in renal cell carcinoma (RCC), whose targets include oncogenic AXL and unique ligand GAS6. Critical gaps in basic knowledge need to be addressed to devise an exclusive biomarker and candidate when targeting the AXL/GAS6 axis. Methods To clarify the effects of the AXL/GAS6 axis on RCC, we herein performed a large-scale immunogenomic analysis and single-cell counts including various metastatic organs and histological subtypes of RCC. We further applied genome-wide mutation analyses and methylation arrays. Results Varying patterns of AXL and GAS6 expression were observed throughout primary RCC tumours and metastases. Scoring individual AXL/GAS6 levels in the tumour centre and invasive margin, namely, the AXL/GAS6 score, showed a good ability to predict the prognosis of clear cell RCC. Metastasis- and histological subtype-specific differences in the AXL/GAS6 score existed since lung metastasis and the papillary subtype were weakly related to the AXL/GAS6 axis. Cell-by-cell immunohistological assessments clarified an immunosuppressive environment in tumours with high AXL/GAS6 scores. Genomic alterations in the PI3K-mTOR pathway and DNA methylation profiling revealed distinct differences with the AXL/GAS6 score in ccRCC. Conclusion The AXL/GAS6 scoring system could predict the outcome of prognosis and work as a robust biomarker for the immunogenomic state in RCC.
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- 2021
184. Surface-tension microscopy by noncontact meniscus-manipulation.
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Nobuyuki Tanaka, Makoto Kondo, Hiroaki Sugiyama, Masayuki Yamato, Teruo Okano, and Jun Miyake
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- 2014
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185. High-throughput cell-patterning with a self-assembled bubble-raft.
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Nobuyuki Tanaka, Yuji Haraguchi, Tatsuya Shimizu, Masayuki Yamato, Teruo Okano, and Jun Miyake
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- 2014
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186. Statins Show Anti-Atherosclerotic Effects by Improving Endothelial Cell Function in a Kawasaki Disease-like Vasculitis Mouse Model
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Yusuke Motoji, Ryuji Fukazawa, Ryosuke Matsui, Yoshinori Abe, Ikuno Uehara, Makoto Watanabe, Yoshiaki Hashimoto, Yasuo Miyagi, Noriko Nagi-Miura, Nobuyuki Tanaka, and Yosuke Ishii
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Inorganic Chemistry ,Organic Chemistry ,Kawasaki disease ,statin ,Candida albicans water-soluble ,vasculitis ,eNOS ,atherosclerosis ,cellular senescence ,Akt ,General Medicine ,Physical and Theoretical Chemistry ,Molecular Biology ,Spectroscopy ,Catalysis ,Computer Science Applications - Abstract
Kawasaki disease (KD) is an acute inflammatory syndrome of unknown etiology that is complicated by cardiovascular sequelae. Chronic inflammation (vasculitis) due to KD might cause vascular cellular senescence and vascular endothelial cell damage, and is a potential cause of atherosclerosis in young adults. This study examined the effect of KD and HMG-CoA inhibitors (statins) on vascular cellular senescence and vascular endothelial cells. Candida albicans water-soluble fraction (CAWS) was administered intraperitoneally to 5-week-old male apolipoprotein E-deficient (ApoE−) mice to induce KD-like vasculitis. The mice were then divided into three groups: control, CAWS, and CAWS+statin groups. Ten weeks after injection, the mice were sacrificed and whole aortic tissue specimens were collected. Endothelial nitric oxide synthase (eNOS) expression in the ascending aortic intima epithelium was evaluated using immunostaining. In addition, eNOS expression and levels of cellular senescence markers were measured in RNA and proteins extracted from whole aortic tissue. KD-like vasculitis impaired vascular endothelial cells that produce eNOS, which maintains vascular homeostasis, and promoted macrophage infiltration into the tissue. Statins also restored vascular endothelial cell function by promoting eNOS expression. Statins may be used to prevent secondary cardiovascular events during the chronic phase of KD.
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- 2022
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187. Profiling the inhibitory receptors LAG-3, TIM-3, and TIGIT in renal cell carcinoma reveals malignancy
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Mototsugu Oya, Fuyuki Miya, Takashi Kamatani, Tetsushi Murakami, Tatsuhiko Tsunoda, Eriko Aimono, Ryohei Takahashi, Ryohei Kufukihara, Yu Teranishi, Nobuyuki Tanaka, Kyohei Hakozaki, Hiroshi Nishihara, Kazuaki Sawada, Toshiaki Shinojima, Naoya Niwa, Takeshi Imamura, Yusuke Sato, Kazuhiro Kakimi, Kimiharu Takamatsu, Takashi Sasaki, Haruki Kume, Ryuichi Mizuno, Seishi Ogawa, and Shuji Mikami
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Cancer microenvironment ,Male ,medicine.medical_specialty ,medicine.medical_treatment ,Science ,General Physics and Astronomy ,Cancer immunotherapy ,Malignancy ,Predictive markers ,General Biochemistry, Genetics and Molecular Biology ,Article ,Tumour biomarkers ,TIGIT ,Renal cell carcinoma ,Antigens, CD ,medicine ,Humans ,Neoplasm Metastasis ,Receptors, Immunologic ,Carcinoma, Renal Cell ,Hepatitis A Virus Cellular Receptor 2 ,Aged ,Multidisciplinary ,Clinical pathology ,business.industry ,Inhibitory receptors ,Reproducibility of Results ,General Chemistry ,Immunotherapy ,Middle Aged ,medicine.disease ,Lymphocyte Activation Gene 3 Protein ,Kidney Neoplasms ,Phenotype ,Cancer research ,Biomarker (medicine) ,Female ,business - Abstract
A cutting edge therapy for future immuno-oncology is targeting a new series of inhibitory receptors (IRs): LAG-3, TIM-3, and TIGIT. Both immunogenomic analyses and diagnostic platforms to distinguish candidates and predict good responders to these IR-related agents are vital in clinical pathology. By applying an automated single-cell count for immunolabelled LAG-3, TIM-3, and TIGIT, we reveal that individual IR levels with exclusive domination in each tumour can serve as valid biomarkers for profiling human renal cell carcinoma (RCC). We uncover the immunogenomic landscape associated with individual IR levels in human RCC tumours with metastases in various organs and histological subtypes. We then externally validate our results and devise a workflow with optimal biomarker cut-offs for discriminating the LAG-3, TIM-3, and TIGIT tumour profiles. The discrimination of LAG-3, TIM-3, and TIGIT profiles in tumours may have a broad impact on investigations of immunotherapy responses after targeting a new series of IRs., Targeting the inhibitory receptors (IRs) LAG-3, TIM-3 and TIGIT is a promising immune-oncology approach and the identification of biomarkers of response is crucial. Here, the authors apply automated single-cell count for these IRs in human renal cell carcinoma and investigate the immunogenomic landscape of the disease.
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- 2021
188. Progress on Southeast Asia’s Flora projects
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Y. Baba, K. Fujikawa, Nobuyuki Tanaka, R.C.K. Chung, DC Thomas, T.B. Tran, Shuichiro Tagane, David J. Middleton, Edwino S. Fernando, Kate Armstrong, Ruth Kiew, Hong Truong Luu, Mu Mu Aung, Mark Newman, Kongkanda Chayamarit, P.C. van Welzen, K.M. Wong, Henrik Balslev, Tetsukazu Yahara, Barry J. Conn, Didik Widyatmoko, and Timothy M. A. Utteridge
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Metadata ,Flora ,Geography ,Work (electrical) ,Ethnology ,Southeast asia - Published
- 2019
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189. Factors affecting renal function preservation among patients not achieving trifecta after laparoscopic partial nephrectomy for clinical T1a renal masses
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Hiroshi Asanuma, Nobuyuki Tanaka, Kazuhiro Matsumoto, Akari Komatsuda, Takeo Kosaka, Toshikazu Takeda, Shinya Morita, Mototsugu Oya, Ryuichi Mizuno, Yoshinori Yanai, and Toshiaki Shinojima
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medicine.medical_specialty ,Multivariate analysis ,medicine.medical_treatment ,Renal function ,Independent predictor ,Nephrectomy ,03 medical and health sciences ,0302 clinical medicine ,Robotic Surgical Procedures ,medicine ,Humans ,Total ischemia ,Retrospective Studies ,Univariate analysis ,Tumor size ,business.industry ,General Medicine ,Middle Aged ,Kidney Neoplasms ,Surgery ,Treatment Outcome ,030220 oncology & carcinogenesis ,Laparoscopy ,030211 gastroenterology & hepatology ,Tumor removal ,business ,Glomerular Filtration Rate - Abstract
INTRODUCTION The goal of partial nephrectomy for renal tumors is complete tumor removal with the preservation of renal function and no complications. Trifecta (total ischemia time
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- 2019
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190. Effects of L-DOPA on quadripulse magnetic stimulation–induced long-term potentiation in older adults
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Takahiro Shimizu, Yuichiro Shirota, Ryosuke Tsutsumi, Nobuyuki Tanaka, Shoji Tsuji, Yoshikazu Ugawa, Shinya Ohminami, Yasuo Terao, and Ritsuko Hanajima
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0301 basic medicine ,Aging ,medicine.medical_specialty ,Long-Term Potentiation ,Stimulation ,Levodopa ,03 medical and health sciences ,0302 clinical medicine ,Double-Blind Method ,Dopamine ,Internal medicine ,Neuroplasticity ,medicine ,Humans ,Young adult ,Aged ,Cross-Over Studies ,Neuronal Plasticity ,business.industry ,General Neuroscience ,Long-term potentiation ,Transcranial Magnetic Stimulation ,030104 developmental biology ,Endocrinology ,medicine.anatomical_structure ,Neurology (clinical) ,Geriatrics and Gerontology ,Primary motor cortex ,business ,030217 neurology & neurosurgery ,Developmental Biology ,medicine.drug ,Motor cortex - Abstract
Reduced cortical plasticity has been previously reported in older adult as compared with young adults. However, the effects of dopamine on this plasticity reduction remain unknown. Here, we assessed the effects of high-dose (200 mg) and medium-dose (100 mg) L-3,4-dihydroxyphenylalanine (L-DOPA) intake on the long-term potentiation (LTP)-like effect induced by quadripulse magnetic stimulation (QPS) in older adults (aged ∼65 years). The subjects were 32 (200 mg) and 20 (100 mg) healthy older adult volunteers. This study was designed as a double-blind, crossover and placebo-controlled trial on one dose of L-dopa. Two hours after taking L-DOPA or placebo-drug, QPS was applied over the motor cortex. Motor evoked potentials were recorded to evaluate the motor cortical excitability changes. We found that both doses of L-DOPA enhanced LTP after QPS in older adults as one group. We classified subjects into QPS responders and QPS nonresponders. Both L-DOPA doses produced significant LTP enhancement in QPS nonresponders, whereas either of doses did not produce significant LTP enhancement in QPS responders. Collectively, our findings suggest that the neural plasticity reductions observed in older adults could be partly improved by dopamine.
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- 2019
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191. Palaeolithic seafaring in East Asia: testing the bamboo raft hypothesis
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Kuo en Huang, Yasumasa Miyazawa, Minoru Muramatsu, Koji Hara, Kumino Miura, Yoshimi Kubota, Nobuyuki Ikeya, Yousuke Kaifu, Chih-huei Huang, Cheng-hwa Tsang, Yunkai Sung, Masahisa Yamada, Masaki Fujita, Toiora Hawira, Wei-Chuan Chiang, Osamu Monden, Chiung-hsi Liu, Katsuaki Suzuki, Akira Goto, Pi-ling Wen, Chih-hsing Lin, Saki Uchida, and Nobuyuki Tanaka
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010506 paleontology ,Archeology ,Bamboo ,060102 archaeology ,Experimental archaeology ,General Arts and Humanities ,Context (language use) ,06 humanities and the arts ,01 natural sciences ,Archaeology ,Geography ,Homo sapiens ,0601 history and archaeology ,East Asia ,Kuroshio current ,0105 earth and related environmental sciences ,Watercraft - Abstract
The earliest colonisation of oceanic islands by Homo sapiens occurred ~50 000–30 000 years ago in the Western Pacific, yet how this was achieved remains a matter of debate. With a focus on East Asia, the research presented here tests the hypothesis that bamboo rafts were used for these early maritime migrations. The authors review the evidence for Palaeolithic seafaring in East Asia as the context for an experimental archaeology project to build two bamboo watercraft. Sea trials demonstrate the unsuitability of bamboo, at least in East Asia, indicating that more sophisticated and durable vessels would have been required to traverse the Kuroshio Current.
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- 2019
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192. TNFAIP2 expression induces epithelial-to-mesenchymal transition and confers platinum resistance in urothelial cancer cells
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Takeo Kosaka, Yasumasa Miyazaki, Mototsugu Oya, Eiji Kikuchi, Ryuichi Mizuno, Shuji Mikami, Nobuyuki Tanaka, Naoya Niwa, Hiroshi Hongo, and Kimiharu Takamatsu
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0301 basic medicine ,Epithelial-Mesenchymal Transition ,Antineoplastic Agents ,Pathology and Forensic Medicine ,03 medical and health sciences ,0302 clinical medicine ,Downregulation and upregulation ,Antigens, CD ,Cell Line, Tumor ,medicine ,Humans ,Neoplasm Invasiveness ,Epithelial–mesenchymal transition ,Molecular Biology ,Regulation of gene expression ,Cisplatin ,Gene knockdown ,business.industry ,Twist-Related Protein 1 ,Membrane Proteins ,Nuclear Proteins ,RNA-Binding Proteins ,Cancer ,MTDH ,Cell Biology ,Cadherins ,medicine.disease ,female genital diseases and pregnancy complications ,Gene Expression Regulation, Neoplastic ,030104 developmental biology ,Urinary Bladder Neoplasms ,Drug Resistance, Neoplasm ,Gene Knockdown Techniques ,030220 oncology & carcinogenesis ,Cancer cell ,Cancer research ,Cytokines ,business ,medicine.drug - Abstract
Cisplatin (CDDP)-based chemotherapy is the gold standard treatment for many types of cancer. However, the phenotypic hallmark of tumors often changes after CDDP treatment, with the acquisition of epithelial-to-mesenchymal transition (EMT) and platinum resistance. Furthermore, the mechanisms by which cancer cells acquire EMT under the control of CDDP remain unclear. Following an investigation of urothelial carcinoma (UC) before and after the acquisition of platinum resistance, we offer the new target TNFAIP2, which led to EMT and tumor invasion in platinum-treated UC cells. TNFAIP2 expression in cancer was examined at the protein and transcriptional levels. A potential target for TNFAIP2 during EMT was assessed by microarray. Clinically, upregulated TNFAIP2 expression was identified as a significant predictor of mortality following surgery in three different cohorts of patients with UC (n = 156, n = 119, and n = 54). Knockdown of TNFAIP2 resulted in upregulation of E-cadherin expression and downregulation of TWIST1 expression, which decreased motile function in platinum-resistant UC cells. TNFAIP2 overexpression led to downregulation of E-cadherin expression and upregulation of TWIST1 expression in platinum-naïve UC cells. Clinical investigation of matched pre- and post-CDDP-treated UC sections confirmed upregulation of TNFAIP2 expression in CDDP-treated tumors but downregulation of E-cadherin expression. Global gene expression analysis following TNFAIP2 knockdown identified MTDH as a positive regulator of TNFAIP2-derived EMT acquisition in cancer cells. The present results suggest a relationship between TNFAIP2 and EMT in cancers under the control of CDDP, in which MTDH expression levels in cancer cells are vital for promoting TNFAIP2-derived EMT acquisition.
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- 2019
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193. Comparison of experimental and simulation results on catalytic HI decomposition in a silica-based ceramic membrane reactor
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Mikihiro Nomura, Odtsetseg Myagmarjav, Nobuyuki Tanaka, and Shinji Kubo
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Materials science ,Renewable Energy, Sustainability and the Environment ,Thermal decomposition ,technology, industry, and agriculture ,Energy Engineering and Power Technology ,02 engineering and technology ,Chemical vapor deposition ,equipment and supplies ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Decomposition ,0104 chemical sciences ,Volumetric flow rate ,chemistry.chemical_compound ,Fuel Technology ,Ceramic membrane ,Chemical engineering ,chemistry ,Hydrogen iodide ,0210 nano-technology ,Porosity ,Hydrogen production - Abstract
In this study, the catalytic decomposition of hydrogen iodide was theoretically and experimentally investigated in a silica-based ceramic membrane reactor to assess the reactor's suitability for thermochemical hydrogen production. The silica membranes were fabricated by depositing a thin silica layer onto the surface of porous alumina ceramic support tubes via counter-diffusion chemical vapor deposition of hexyltrimethoxysilane. The performance of the silica-based ceramic membrane reactor was evaluated by exploring important operating parameters such as the flow rates of the hydrogen iodide feed and the nitrogen sweep gas. The influence of the flow rates on the hydrogen iodide decomposition conversion was investigated in the lower range of the investigated feed flow rates and in the higher range of the sweep-gas flow rates. The experimental data agreed with the simulation results reasonably well, and both highlighted the possibility of achieving a conversion greater than 0.70 at decomposition temperature of 400 °C. Therefore, the developed silica-based ceramic membrane reactor could enhance the total thermal efficiency of the thermochemical process.
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- 2019
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194. Emissions of Volatile Organic Compounds from a Dairy Cattle Shed in Japan
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Akane Miyazaki, Kaede Moriyama, Megumi Ohtsu, and Nobuyuki Tanaka
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lcsh:GE1-350 ,seasonal variation ,Atmospheric Science ,dairy cattle ,Seasonality ,medicine.disease ,lcsh:TD1-1066 ,volatile organic compounds ,Environmental chemistry ,medicine ,chemical composition ,Environmental science ,lcsh:Environmental technology. Sanitary engineering ,Chemical composition ,lcsh:Environmental sciences ,Dairy cattle ,General Environmental Science - Abstract
To clarify the nature and characteristics of volatile organic compounds (VOCs) emitted from dairy cattle within a cattle shed located in Chiba, Japan, air samples were collected and analyzed for the four seasons in 2017-2018. Thirty-four VOCs were determined by gas chromatography-mass spectrometry and high performance liquid chromatography. In addition, air temperature and relative humidity inside and outside of the shed were monitored during each sampling campaign to estimate the ventilation rate of the shed. The average concentrations of total VOCs (μg m-3) in the shed in each season were 50.5 (spring), 128.4 (summer), 168.8 (autumn), and 199.5 (winter). Ketones were always the most dominant components followed by alcohols and volatile fatty acids (VFAs). The sum of ketones, alcohols, and VFAs accounted for more than 80% of the total VOCs in all seasons. Acetone, 3-pentanone, 1-butanol, and acetic acid were the major components regardless of the season, accounting for more than 60% of the total VOCs. The average emission rates of total VOCs from the shed (μg h-1 kg-1) were calculated to be 623 (spring), 1520 (summer), 585 (autumn) and 469 (winter). The emission rates of almost all the VOCs except alcohols increased exponentially with increase of air temperature in the shed. The ranges of the emission rates for each class of chemical (μg h-1 kg-1) were 39-170 (VFAs), 247-913 (ketones), 65-134 (alcohols), 40-122 (phenols), 10-122 (aldehydes), 4.17-22.3 (sulfur compounds), and 0.0067-0.74 (indoles). Furthermore, the annual emissions of VOCs for a single dairy cattle and for the cattle shed were estimated to be 5.5 kg and 44 kg, respectively
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- 2019
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195. Type of patients in whom biochemical recurrence after radical prostatectomy can be observed without salvage therapy
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Masayuki Hagiwara, Satoshi Hara, Kazuhiro Matsumoto, Mototsugu Oya, Ryuichi Mizuno, Toshiaki Shinojima, Takeo Kosaka, Toshikazu Takeda, Shinya Morita, Naoya Niwa, Hiroshi Asanuma, and Nobuyuki Tanaka
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Male ,Nephrology ,Biochemical recurrence ,medicine.medical_specialty ,medicine.drug_class ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Salvage therapy ,urologic and male genital diseases ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Internal medicine ,medicine ,Humans ,Aged ,Retrospective Studies ,Prostatectomy ,Salvage Therapy ,business.industry ,Significant difference ,breakpoint cluster region ,Prostatic Neoplasms ,Androgen Antagonists ,Middle Aged ,Prostate-Specific Antigen ,Prognosis ,Androgen ,Combined Modality Therapy ,030220 oncology & carcinogenesis ,Population study ,Neoplasm Recurrence, Local ,business - Abstract
To examine the prognosis after BCR with and without salvage therapy, including radiation and/or androgen deprivation.The study population consisted of 431 patients, all of whom underwent radical prostatectomy and developed BCR (PSA 0.2 ng/mL). According to the two risk factors [Gleason score ≥ 8 and PSA-doubling time (DT) 6 months], we divided the patients into two groups. The high/intermediate-risk group consisted of patients with both or one risk factor. On the other hand, patients with neither factor were in the low-risk group. We set the starting point at the timing of BCR, and the endpoints were development to castration-resistant prostate cancer (CRPC) and cancer-specific death.During the mean follow-up period of 8.3 years after BCR, CRPC was observed in 49 patients (11.4%), and 21 patients (4.9%) died due to prostate cancer. We first divided the 191 high/intermediate-risk patients according to the PSA level (PSA 1.0 ng/mL, PSA 1.0-4.0, and PSA 4.0 or no therapy) at the initiation of salvage therapy, including radiation and/or androgen deprivation. We found that delayed (PSA 4.0 ng/mL) or no salvage therapy was significantly associated with CRPC and cancer-specific death. In the 240 low-risk patients, Kaplan-Meier curves demonstrated no significant difference in CRPC-free survival or cancer-specific survival within 10 years from the timing of BCR.Observation after BCR without salvage therapy or delayed administration may be an option for low-risk patients with a Gleason score ≤ 7 and PSA-DT ≥ 6 months when their life expectancy is within 10 years.
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- 2019
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196. Modeling future wildlife habitat suitability: serious climate change impacts on the potential distribution of the Rock Ptarmigan Lagopus muta japonica in Japan’s northern Alps
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Motoki Higa, Katsuhiro Nakao, Takashi Hamada, Nobuyuki Tanaka, Masanobu Hotta, Yuji Kominami, Masaaki Ozeki, Masatsugu Yasuda, Tetsuya Matsui, and Ikutaro Tsuyama
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0106 biological sciences ,Climate Change ,Population ,Species distribution ,Climate change ,Subspecies ,010603 evolutionary biology ,01 natural sciences ,Japonica ,Japan ,Ecosystem ,Potential habitat ,education ,Ecology, Evolution, Behavior and Systematics ,QH540-549.5 ,General Environmental Science ,education.field_of_study ,biology ,Ecology ,010604 marine biology & hydrobiology ,Species distribution model ,Vegetation ,biology.organism_classification ,Geography ,Habitat ,Rock Ptarmigan ,Climate change impact ,Lagopus muta japonica ,Research Article - Abstract
Background The Rock Ptarmigan Lagopus muta japonica lives in the alpine zones of central Japan, which is the southern limit of the global distribution for this species. This species is highly dependent on alpine habitats, which are considered vulnerable to rapid climate change. This study aimed to assess the impact of climate change on potential L. muta japonica habitat based on predicted changes to alpine vegetation, to identify population vulnerability under future climatic conditions for conservation planning. We developed species distribution models, which considered the structure of the alpine ecosystem by incorporating spatial hierarchy on specific environmental factors to assess the potential habitats for L. muta japonica under current and future climates. We used 24 general circulation models (GCMs) for 2081–2100 as future climate conditions. Results The predicted potential habitat for L. muta japonica was similar to the actual distribution of the territories in the study area of Japan’s northern Alps (36.25–36.5°N, 137.5–137.7°E). Future potential habitat for L. muta japonica was projected to decrease to 0.4% of the current potential habitat in the median of occurrence probabilities under 24 GCMs, due to a decrease in alpine vegetation communities. Some potential habitats in the central and northwestern part of the study area were predicted to be sustained in the future, depending on the GCMs. Conclusions Our model results predicted that the potential habitats for L. muta japonica in Japan’s northern Alps, which provides core habitat for this subspecies, would be vulnerable by 2081–2100. Small sustainable habitats may serve as refugia, facilitating the survival of L. muta japonica populations under future climatic conditions. Impact assessment studies of the effect of climate change on L. muta japonica habitats at a nationwide scale are urgently required to establish effective conservation planning for this species, which includes identifying candidate areas for assisted migration as an adaptive strategy. Electronic supplementary material The online version of this article (10.1186/s12898-019-0238-8) contains supplementary material, which is available to authorized users.
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- 2019
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197. Research and development on membrane IS process for hydrogen production using solar heat
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Masahiko Mizuno, Yoshiyuki Inagaki, Yoshiro Kuriki, Nobuyuki Tanaka, Shinji Kubo, Mikihiro Nomura, Tetsuya Yamaki, Tatsumi Ishihara, Ikuo Ioka, Odtsetseg Myagmarjav, Shin-ichi Sawada, Makoto Inomata, Tomoyuki Taguchi, Masakoto Kanezashi, Hiroki Noguchi, Hiroaki Abekawa, Jin Iwatsuki, Keita Miyajima, Yasuo Hosono, Masato Machida, Xin Yu, Yu Kamiji, Nariaki Sakaba, and Toshinori Tsuru
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Thermal efficiency ,Materials science ,Membrane reactor ,Renewable Energy, Sustainability and the Environment ,business.industry ,Fossil fuel ,Energy Engineering and Power Technology ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Solar energy ,01 natural sciences ,0104 chemical sciences ,Fuel Technology ,Membrane ,Bunsen reaction ,0210 nano-technology ,Process engineering ,business ,Solar power ,Hydrogen production - Abstract
Thermochemical hydrogen production has attracted considerable interest as a clean energy solution to address the challenges of climate change and environmental sustainability. The thermochemical water-splitting iodine-sulfur (IS) process uses heat from nuclear or solar power and thus is a promising next-generation thermochemical hydrogen production method that is independent of fossil fuels and can provide energy security. This paper presents the current state of research and development (R&D) of the IS process based on membrane techniques using solar energy at a medium temperature of 600 °C. Membrane design strategies have the most potential for making the IS process using solar energy highly efficient and economical and are illustrated here in detail. Three aspects of membrane design proposed herein for the IS process have led to a considerable improvement of the total thermal efficiency of the process: membrane reactors, membranes, and reaction catalysts. Experimental studies in the applications of these membrane design techniques to the Bunsen reaction, sulfuric acid decomposition, and hydrogen iodide decomposition are discussed.
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- 2019
198. Sub-classification of patients with intermediate-risk metastatic renal cell carcinoma treated with targeted therapy
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Ryuichi Mizuno, Koshiro Nishimoto, Go Kaneko, Tomohiko Asano, Yasumasa Miyazaki, Masayuki Hagiwara, Tetsuo Momma, Ken Nakagawa, Mototsugu Oya, Yujiro Ito, Kent Kanao, Masafumi Oyama, Keiichi Ito, Nobuyuki Tanaka, and Suguru Shirotake
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Adult ,Male ,Oncology ,Cancer Research ,medicine.medical_specialty ,medicine.medical_treatment ,Targeted therapy ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Renal cell carcinoma ,Internal medicine ,Humans ,Medicine ,Radiology, Nuclear Medicine and imaging ,Molecular Targeted Therapy ,030212 general & internal medicine ,Carcinoma, Renal Cell ,Aged ,biology ,business.industry ,C-reactive protein ,Bone metastasis ,General Medicine ,Immunotherapy ,Middle Aged ,medicine.disease ,Kidney Neoplasms ,Nephrectomy ,Concordance correlation coefficient ,030220 oncology & carcinogenesis ,biology.protein ,Female ,Antibody ,business - Abstract
Background International Metastatic Renal Cell Carcinoma Database Consortium model predicts the outcomes of metastatic renal cell carcinoma stratified into favorable, intermediate, and poor risk groups (FG, IG, and PG, respectively), with approximately 50% of patients being classified as IG. We aimed to generate better risk model based on the sub-classification of IG. Methods We analyzed records of 213 consecutive patients receiving molecular targeted therapy. Age, gender, histology, type of initial molecular targeted therapy, serum laboratory data, previous nephrectomy and immunotherapy, and metastatic sites were used for IG sub-stratification. Modified and original models were compared using a concordance correlation coefficient analysis. Results Median follow-up was 17.8 months. Serum albumin, serum C-reactive protein, and bone metastases were independent predictors of overall survival (OS) in IG. IG was sub-classified into low-, middle-, and high-risk IG according to the number of predictors. The following modified model was developed: modified FG (FG & low-risk IG), modified IG (middle-risk IG), and modified PG (PG & high-risk IG). Concordance indices for original and modified models were 0.68 and 0.73, respectively (P < 0.001). OS was significantly longer in modified PG treated with mammalian target of rapamycin inhibitors as second-line therapy than with tyrosine kinase inhibitors, whereas this was not observed in the original model. Conclusions We successfully developed modified IMDC model using a two-step process: the original IMDC plus an IG sub-stratification, and demonstrated that it predicts outcomes more accurately than original model.
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- 2019
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199. Prognostic value of serum C-reactive protein level prior to second-line treatment in intermediate risk metastatic renal cell carcinoma patients
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Toshiaki Shinojima, Eiji Kikuchi, Shuji Mikami, Kimiharu Takamatsu, Shinya Morita, Masafumi Oyama, Ryuichi Mizuno, Hiroshi Asanuma, Nobuyuki Tanaka, Kazuhiro Matsumoto, Mototsugu Oya, Takeo Kosaka, and Toshikazu Takeda
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Adult ,Male ,0301 basic medicine ,medicine.medical_specialty ,medicine.medical_treatment ,Gastroenterology ,Targeted therapy ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Surgical oncology ,Renal cell carcinoma ,Internal medicine ,medicine ,Humans ,Molecular Targeted Therapy ,Carcinoma, Renal Cell ,Aged ,Retrospective Studies ,Aged, 80 and over ,Second line treatment ,biology ,business.industry ,C-reactive protein ,Treatment Setting ,Serum C reactive protein level ,Hematology ,General Medicine ,Middle Aged ,Prognosis ,medicine.disease ,Survival Analysis ,Kidney Neoplasms ,C-Reactive Protein ,Treatment Outcome ,030104 developmental biology ,Oncology ,030220 oncology & carcinogenesis ,biology.protein ,Female ,Surgery ,Intermediate risk ,business - Abstract
The later-line treatment of metastatic renal cell carcinoma (mRCC) has been drastically changing by the development of immune-oncology drugs and molecular targeted treatment in recent years. Although the International Metastatic Renal Cell Carcinoma Database Consortium (IMDC) model is useful for second-line setting, this model has the problem that over 50% patients are classified as intermediate risk group. The aim of this study is to evaluate whether the serum C-reactive protein (CRP) levels prior to second-line treatment could divide intermediate risk group patients. We retrospectively reviewed 82 consequent intermediate-risk mRCC patients who received second-line molecular targeted therapy. We classified patients who had serum CRP higher than 0.5 mg/dl in elevated CRP group because the median baseline serum CRP level before second-line treatment was 0.51 mg/dl. We assessed the prognostic impact of serum CRP levels prior to second-line treatment initiation to predict overall survival (OS). Thirty-three out of 82 (40%) patients demonstrated elevated baseline CRP levels. The median OS of elevated and non-elevated CRP group was 11.5 (95% CI 5.4–17.5) and 29.4 (95% CI 25.5–33.5) months, respectively (p = 0.001). The serum CRP elevation could predict prognosis in intermediate risk patients treated with second-line treatment (HR 2.5, 95% CI 1.4–4.2, p = 0.001). The serum CRP levels after first-line treatment termination could divide intermediate risk group mRCC patients into two prognostic subgroups in second-line targeted treatment setting.
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- 2019
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200. Differential diagnosis of pulmonary infections in immunocompromised patients using high-resolution computed tomography
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Toshiaki Yujiri, Reo Kawano, Kazuhiro Ueda, Tsuneo Matsumoto, Nobuyuki Tanaka, Makoto Kubo, Taiga Kobayashi, Toshikazu Gondo, and Yoshie Kunihiro
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Adult ,Male ,medicine.medical_specialty ,High-resolution computed tomography ,Adolescent ,Pneumonia, Viral ,Pneumocystis pneumonia ,030218 nuclear medicine & medical imaging ,Diagnosis, Differential ,Immunocompromised Host ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Pneumonia, Bacterial ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Child ,Aged ,Retrospective Studies ,Septic embolism ,Neuroradiology ,Aged, 80 and over ,medicine.diagnostic_test ,business.industry ,Bacterial pneumonia ,General Medicine ,Odds ratio ,Middle Aged ,medicine.disease ,Fungal pneumonia ,respiratory tract diseases ,Child, Preschool ,030220 oncology & carcinogenesis ,Female ,Radiology ,Differential diagnosis ,Tomography, X-Ray Computed ,business ,Algorithms - Abstract
The aims of this study were to compare the high-resolution computed tomography (HRCT) findings of pulmonary infections in immunocompromised patients and to assess the usefulness of HRCT in the differential diagnosis of these infections. A total of 345 immunocompromised patients with pulmonary infections were included in this study. The diagnoses of the patients consisted of bacterial pneumonia (123 cases), pneumocystis pneumonia (PCP) (105 cases), fungal pneumonia (80 cases), tuberculosis (15 cases), cytomegalovirus pneumonia (11 cases), and septic embolism (11 cases). Two chest radiologists retrospectively evaluated the computed tomography (CT) images, which consisted of 22 findings including ground-glass attenuation, consolidation, nodules, and thickening of the bronchial wall and interlobular septum. Associations between the CT criteria and infections were investigated using χ2 test; multiple logistic regression analyses were conducted to identify the significant indicator for each infection. The area under the curve (AUC) of each model was calculated. Bronchial wall thickening was a significant indicator for bacterial pneumonia (p = 0.002; odds ratio [OR], 2.341; 95% confidence interval [CI], 1.378–3.978). The presence of a mosaic pattern and the absence of nodules were significant indicators for PCP (p
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- 2019
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