20 results on '"Ichihara S"'
Search Results
2. MO10-4 Pretreatment eosinophil counts as a predictive biomarker in NSCLC patients treated with immune checkpoint inhibitors.
- Author
-
Takeuchi, E., Kondo, K., Okano, Y., Ichihara, S., Kunishige, M., Kadota, N., Machida, H., Hatakeyama, N., Naruse, K., Ogino, H., Nokihara, H., Shinohara, T., and Nishioka, Y.
- Subjects
- *
IMMUNE checkpoint inhibitors , *EOSINOPHILS , *BIOMARKERS , *NON-small-cell lung carcinoma - Published
- 2024
- Full Text
- View/download PDF
3. Endovascular therapy via a femoro-femoral crossover bypass graft for chronic total occlusion of the superficial femoral artery: Two case reports.
- Author
-
Tsuchida Y, Hayakawa N, Miwa H, Ichihara S, Maruta S, and Kushida S
- Abstract
In patients with a femoropopliteal chronic total occlusion (CTO) after femoro-femoral (FF) bypass surgery, it is often difficult to perform endovascular therapy because of access site problems. We have treated two patients with CTO of the superficial femoral artery (SFA) using an FF crossover bypass graft. The two cases were a man with intermittent claudication and acute limb ischemia, respectively. Enhanced computed tomography showed occlusion of the left SFA and the FF bypass previously performed was patent in both cases. We punctured the right common femoral artery and a guiding sheath was inserted to the left common femoral artery. A guidewire successfully passed through the intraplaque lesion by intravascular ultrasound-guided wiring in both cases. Revascularization was successfully achieved using drug-coated balloons and using drug-eluting stents, respectively. An FF crossover bypass graft may be a good access route for complex femoropopliteal cases, such as CTO lesions., Competing Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2024.)
- Published
- 2024
- Full Text
- View/download PDF
4. Clinical, histological, molecular, and toxicokinetic renal outcomes of per-/polyfluoroalkyl substances (PFAS) exposure: Systematic review and meta-analysis.
- Author
-
Hanvoravongchai J, Laochindawat M, Kimura Y, Mise N, and Ichihara S
- Abstract
Background: Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals present in the environment that can negatively affect health. Kidney is the major target organ of PFAS exposure, yet the renal impact of PFAS is not completely understood. Here we review the effects of PFAS exposure on kidney health to identify gaps in our understanding and mark potential avenues for future research., Methods: PubMed and SCOPUS databases were searched for studies that examined the association between PFAS exposure and kidney-related outcomes. We included all epidemiological, animal, and cell studies and categorized outcomes into four categories: clinical, histological, molecular and toxicokinetic., Results: We identified 169 studies, including 51 on clinical outcomes, 28 on histological changes, 42 on molecular mechanisms, and 68 on toxicokinetics. Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) exposure were associated with kidney dysfunction, chronic kidney diseases, and increased risk of kidney cancer. Various histological changes were reported, especially in tubular epithelial cells, and the etiology of PFAS-induced kidney injury included various molecular mechanisms. Although PFOA and PFOS are not considered genotoxic, they exhibit several characteristics of carcinogens. Toxicokinetics of PFOA and PFOS differed significantly between species, with renal elimination influenced by various factors such as sex, age, and structure of the compound., Conclusion: Evidence suggests that PFAS, especially PFOA and PFOS, negatively affects kidney health, though gaps in our understanding of such effects call for further research., Competing Interests: Declaration of Competing Interest ☒ The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
5. Assessment of occupational exposure to micro/nano particles generated from carbon fiber-reinforced plastic processing.
- Author
-
Kumoi J, Ikegami A, Matsumi Y, Fujitani Y, Ichihara G, Yano T, and Ichihara S
- Abstract
Carbon fiber-reinforced plastics (CFRP) are leading functional materials with superior strength and low mass density compared to metal. Our previous factory site analyses found that CFRP processing generates fibrous debris and fine micro/nano-sized particles of various shapes. The present interventional study was conducted at a factory located in Japan and evaluated debris consisting of various-sized particles generated during the industrial processing of CFRP, such as cutting, grinding, and turning of CFRP pipes, using real-time particle monitoring devices of the following: PM4 Digital Dust Monitor (DDM), handled Optical Particle Counter (OPC), Condensation Particle Counter (CPC), and Scanning Mobility Particle Sizer (SMPS). In addition, personal exposure of workers was evaluated using a novel wearable PM2.5-compatible device (P-sensor). First, we confirmed the presence of micro/nano particles in the dust generated during industrial processing of CFRP. Finer CFRP-generated particles were detected by the nanoparticle-compatible devices; CPC and SMPS, but not by OPC or DDM. The dynamic detection pattern of the P-sensor resembled that recorded by the nanoparticle-compatible devices. The novel wearable P-sensor can be used to measure finer particles generated by CFRP processing in occupational settings. Second, the exposure assessment was conducted twice and the levels of the micro/nano particles in the second survey were significantly (less than half) lower than that in the first survey. By avoiding immediate power-off of the exhaust system after operations, the scattering of particles was effectively reduced. Our results indicate that effective use of local exhaust ventilation system improves the workplace environment for particle exposure., (© The Author(s) 2024. Published by Oxford University Press on behalf of the British Occupational Hygiene Society. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)
- Published
- 2024
- Full Text
- View/download PDF
6. A novel bailout technique using myocardial biopsy forceps to grasp a dislodged angio-seal collagen with footplate.
- Author
-
Miwa H, Hayakawa N, Tsuchida Y, Ichihara S, Hirano S, Maruta S, Miyaji K, and Kushida S
- Abstract
Background: Hemostatic devices are now frequently used in femoral artery punctures, and the Angio-Seal (Terumo, Tokyo, Japan) is one of the most commonly used devices for closure of the femoral artery because it provides rapid hemostasis. Although device failure rarely occurs, if the collagen falls into the femoral artery, it may lead to severe limb ischemia. Herein, we describe a case of a novel endovascular technique for the treatment of Angio-Seal arterial closure device failure., Case Presentation: The patient in Case 1 was a 75-year-old man with severe left limb claudication. We used a contralateral antegrade approach and used the Angio-Seal for hemostasis. However, the Angio-Seal collagen and footplate dropped and stopped at the bifurcation of the superficial femoral artery and deep femoral artery. The collagen with the footplate was caught with myocardial biotome forceps (MBF) and pulled into the external iliac artery (EIA). The distal common femoral artery (CFA) was punctured, and we delivered a 10.0- × 80-mm stent (SMART
® ; Cordis, USA) to the EIA from the ipsilateral sheath. The stent was deployed at the EIA and crushed the collagen. The patient in Case 2 was an 88-year-old man with rest pain in the right limb. The right CFA was punctured using an ipsilateral approach and the Angio-Seal was used for hemostasis. The Angio-Seal collagen with the footplate dropped into the bifurcation of the deep femoral artery. The collagen and footplate were caught with MBF and pulled up to the EIA. The right CFA was punctured and a 10.0- × 60-mm stent (SMART® ; Cordis) was delivered from the ipsilateral sheath. The stent was deployed at the EIA and crushed the collagen with the footplate., Conclusions: MBF were used to grasp the dislodged collagen with the anchor and cover it with a stent at the iliac artery. This may be a useful bailout technique for Angio-Seal dislodgement., (© 2024. The Author(s).)- Published
- 2024
- Full Text
- View/download PDF
7. Granulocyte colony-stimulating factor has the potential to attenuate the therapeutic efficacy of chemo-immunotherapy for extensive-stage small-cell lung cancer.
- Author
-
Tsukazaki Y, Ogino H, Okano Y, Kakiuchi S, Harada S, Toyoda Y, Matsumura Y, Ichihara S, Imakura T, Matsumoto R, Ozaki R, Ogawa E, Morita Y, Mitsuhashi A, Yabuki Y, Yoneda H, Hanibuchi M, Hase K, Takeuchi E, Haku T, and Nishioka Y
- Subjects
- Humans, Female, Male, Middle Aged, Aged, Retrospective Studies, Adult, Progression-Free Survival, Aged, 80 and over, Neoplasm Staging, Lung Neoplasms drug therapy, Lung Neoplasms pathology, Granulocyte Colony-Stimulating Factor administration & dosage, Granulocyte Colony-Stimulating Factor therapeutic use, Small Cell Lung Carcinoma drug therapy, Small Cell Lung Carcinoma immunology, Small Cell Lung Carcinoma pathology, Immunotherapy methods, Antineoplastic Combined Chemotherapy Protocols therapeutic use
- Abstract
Background: Granulocyte colony-stimulating factor (G-CSF) has the potential to attenuate the anti-tumor immune responses of T-cells by increasing immune suppressive neutrophils and myeloid-derived suppressor cells. However, the clinical impact of G-CSF on the efficacy of immunotherapy remains unknown. This multi-center retrospective analysis evaluated the impact of G-CSF in patients with extensive-stage small-cell lung cancer (ES-SCLC) treated with chemo-immunotherapy., Methods: We analyzed 65 patients with ES-SCLC who completed four cycles of induction chemo-immunotherapy and evaluated the effects of G-CSF on progression-free survival (PFS), overall survival (OS), and a durable response to immunotherapy (defined as PFS ≥ 12 months)., Results: Fifty patients (76.9%) received ≥ 1 dose of G-CSF. The PFS of the patients with G-CSF was poorer than that of the patients without G-CSF (median PFS 8.3 vs. 4.9 months, p = 0.009). The OS of the patients with G-CSF tended to be shorter, but not statistically significant, than that of the patients without G-CSF (median OS 24.3 vs. 16.4 months, p = 0.137). In the multivariate analysis, G-CSF administration was associated with poorer PFS (hazard ratio 2.78, 95% CI 1.36-5.69, p = 0.005) and was identified as a determinant of a durable response (odds ratio 0.18, 95% CI 0.04-0.80, p = 0.024). These results were consistent with other definitions of G-CSF administration (administration of ≥ 1 dose of pegfilgrastim, or either ≥ 5 doses of filgrastim or ≥ 1 dose of pegfilgrastim)., Conclusions: G-CSF has the potential to attenuate the efficacy of immunotherapy; therefore, the indication for G-CSF during chemo-immunotherapy should be carefully considered for ES-SCLC., (© 2024. The Author(s) under exclusive licence to Japan Society of Clinical Oncology.)
- Published
- 2024
- Full Text
- View/download PDF
8. Phase-contrast visualization of human tissues using superimposed wavefront imaging of diffraction-enhanced x-rays.
- Author
-
Sunaguchi N, Yuasa T, Shimao D, Huang Z, Ichihara S, Nishimura R, Iwakoshi A, Kim JK, Gupta R, and Ando M
- Abstract
Background: Phase-contrast computed tomography (CT) using high-brilliance, synchrotron-generated x-rays enable three-dimensional (3D) visualization of microanatomical structures within biological specimens, offering exceptionally high-contrast images of soft tissues. Traditional methods for phase-contrast CT; however, necessitate a gap between the subject and the x-ray camera, compromising spatial resolution due to penumbral blurring. Our newly developed technique, Superimposed Wavefront Imaging of Diffraction-enhanced x-rays (SWIDeX), leverages a Laue-case Si angle analyzer affixed to a scintillator to convert x-rays to visible light, capturing second-order differential phase contrast images and effectively eliminating the distance to the x-ray camera. This innovation achieves superior spatial resolution over conventional methods., Purpose: In this paper, the imaging principle and CT reconstruction algorithm based on SWIDeX are presented in detail and compared with conventional analyzer-based imaging (ABI). It also shows the physical setup of SWIDeX that provides the resolution preserving second-order differential images for reconstruction. We compare the spatial resolution and the sensitivity of SWIDeX to conventional ABI., Methods: To demonstrate high-spatial resolution achievable by SWIDeX, the internal structures of four human tissues-ductal carcinoma in situ, normal stomach, normal pancreas, and intraductal papillary mucinous neoplasm of the pancreas-were visualized using an imaging system configured at the Photon Factory's BL14B beamline under the High Energy Accelerator Research Organization (KEK). Each tissue was thinly sliced after imaging, stained with hematoxylin and eosin (H&E) for conventional microscope-based pathology., Results: A comparison of SWIDeX-CT and pathological images visually demonstrates the effectiveness of SWIDeX-CT for biological tissue imaging. SWIDeX could generate clearer 3D images than existing analyzer-based phase-contrast methods and accurately delineate tissue structures, as validated against histopathological images., Conclusions: SWIDeX can visualize important 3D structures in biological soft tissue with high spatial resolution and can be an important tool for providing information between the disparate scales of clinical and pathological imaging., (© 2024 The Author(s). Medical Physics published by Wiley Periodicals LLC on behalf of American Association of Physicists in Medicine.)
- Published
- 2024
- Full Text
- View/download PDF
9. Hyperechogenicity and histopathological features of focal liver lesions.
- Author
-
Okino K, Wakasugi S, and Ichihara S
- Abstract
The identification and accurate diagnosis of focal liver lesions are important in modern medicine, where diagnostic radiology plays an essential role. This review aimed to examine the hyperechogenicity and histopathological features of focal liver lesions. Hyperechogenic liver lesions can be either benign or malignant. Evidence shows that hyperechogenicity is caused by factors such as fat deposition, sinusoidal dilation, peliotic changes, and pseudoglandular patterns. Fat deposition is a common cause of increased echogenicity in hepatocellular carcinoma (HCC). Meanwhile, sinusoidal dilation and peliotic changes are more frequently observed in larger HCC nodules. Pseudoglandular patterns, characterized by the reflection of ultrasound waves at the walls of numerous acini, are associated with hyperechogenicity in well-to-moderately differentiated HCCs. Moreover, this review comprehensively examined the histological features that may cause hyperechogenic internal echoes in not only HCCs but also localized liver lesions (metastases of adenocarcinoma and neuroendocrine neoplasm, intrahepatic cholangiocarcinoma, cavernous hemangioma, focal nodular hyperplasia, and angiomyolipoma). To make an accurate diagnosis and provide appropriate management, it is important to understand the histopathological basis for hyperechogenicity in focal liver lesions. By maximizing the accuracy of imaging studies and enhancing the radiology-pathology correlation, unnecessary biopsies can be avoided, thereby reducing potential complications and mortality. This review can help facilitate the effective management of patients with focal liver lesions, thereby resulting in timely and appropriate treatment decision-making., (© 2024. The Author(s), under exclusive licence to The Japan Society of Ultrasonics in Medicine.)
- Published
- 2024
- Full Text
- View/download PDF
10. The white ring sign is useful for differentiating between fundic gland polyps and gastric adenocarcinoma of the fundic gland type.
- Author
-
Takahashi K, Sasaki T, Ueno N, Maguchi H, Tachibana S, Hayashi R, Kobayashi Y, Sugiyama Y, Sakatani A, Ando K, Kashima S, Moriichi K, Tanabe H, Harada K, Yuzawa S, Ichihara S, Okumura T, and Fujiya M
- Abstract
Background and study aims Gastric adenocarcinoma of the fundic gland type (GA-FG) is characterized by an elevated lesion with vessel dilation exhibiting branching architecture (DVBA). However, this feature is also found in fundic gland polyps (FGPs), posing a challenge in their differentiation. In this study, we aimed to investigate the clinicopathological features of gastric elevated lesions with DVBA and assess the efficacy of the white ring sign (WRS) as a novel marker for distinguishing between FGPs and GA-FGs. Methods We analyzed 159 gastric elevated lesions without DVBA and 51 gastric elevated lesions with DVBA, further dividing the latter into 39 in the WRS-positive group and 12 in the WRS-negative group. The clinicopathological features, diagnostic accuracy, and inter-rater reliability were analyzed. Results Univariate and multivariate analyses for gastric elevated lesions with DVBA identified the histological type consistent with FGPs and GA-FGs, along with the presence of round pits in the background gastric mucosa, as independent predictors. FGPs were present in 92.3% (36/39) of the WRS-positive group and GA-FGs were observed in 50.0% (6/12) of the WRS-negative group. WRS positivity and negativity exhibited high diagnostic accuracy, with 100% sensitivity, 80.0% specificity, and 94.1% accuracy for FGPs, and 100% sensitivity, 86.7% specificity, and 88.2% accuracy for GA-FGs. Kappa values for WRS between experts and nonexperts were 0.891 and 0.841, respectively, indicating excellent agreement. Conclusions WRS positivity and negativity demonstrate high diagnostic accuracy and inter-rater reliability for FGPs and GA-FGs, respectively, suggesting that WRS is a useful novel marker for distinguishing between FGPs and GA-FGs., Competing Interests: Conflict of Interest Mikihiro Fujiya received lecture fees from Olympus Corporation. The remaining authors have no conflict of interest to declare., (The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).)
- Published
- 2024
- Full Text
- View/download PDF
11. Insights into Triclosan-Induced Endocrine Disruption: Evidence from the National Health and Nutrition Examination Survey and Zebrafish Models.
- Author
-
Li Z, Xian H, Ren X, Ye R, Zhong Y, Huang Y, Liang B, Deng Y, Dai M, Guo J, Tang S, Pan J, Feng Y, Bai R, Chen X, Ichihara S, Ichihara G, Chen D, Yang X, and Huang Z
- Abstract
Triclosan (TCS) has garnered significant attention due to its widespread use and associated endocrine-disrupting effects. However, its impact on the neuroendocrine system and underlying mechanisms remain poorly understood. Here, we established correlations between TCS exposure and serum sex hormone levels in participants of the National Health and Nutrition Examination Survey (NHANES). Additionally, we investigated TCS's influence on the neuroendocrine system using adult zebrafish exposed to environmentally relevant concentrations of TCS (0.361-48.2 μg/L) for 21 days. Assessment of reproductive and neurotoxicity included histopathological examination and behavioral tests. Transcriptomics, proteomics analyses, and biochemical detection were employed to elucidate mechanisms underlying TCS-induced neuroendocrine disruption. Significant correlations were found between TCS exposure and estradiol, testosterone, and sex hormone-binding globulin levels in NHANES participants. In addition, TCS exposure inhibited ovary development and spermatogenesis in zebrafish. Transcriptomics and proteomics analysis revealed gender-specific key signaling and metabolism-related pathways implicated in TCS-induced reproductive toxicity. Moreover, TCS exposure induced nervous system impairment, as evidenced by histological changes and altered motor behavior, possibly associated with oxidative damage. Correlation analysis further highlighted the potential connection between endocrine system disruption and nervous system impairment following TCS exposure. Overall, this study provided evidence supporting TCS-induced endocrine disruption and offered insights into its underlying mechanisms., Competing Interests: The authors declare no competing financial interest., (© 2024 The Authors. Co-published by Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, and American Chemical Society.)
- Published
- 2024
- Full Text
- View/download PDF
12. Efficacy of endoscopic surveillance for pharyngeal mucosa during endoscopic resection for pharyngeal carcinoma: a multicenter prospective study.
- Author
-
Kimura Y, Shimizu Y, Taniguchi M, Ito S, Dobashi A, Goda K, Nishimura Y, Yamamoto K, Ichihara S, and Watanabe A
- Subjects
- Humans, Male, Female, Prospective Studies, Aged, Middle Aged, Narrow Band Imaging methods, Carcinoma, Squamous Cell surgery, Carcinoma, Squamous Cell pathology, Carcinoma, Squamous Cell diagnostic imaging, Mucous Membrane pathology, Mucous Membrane surgery, Iodides, Aged, 80 and over, Endoscopic Mucosal Resection methods, Pharynx pathology, Pharynx diagnostic imaging, Pharyngeal Neoplasms surgery, Pharyngeal Neoplasms pathology, Pharyngeal Neoplasms diagnostic imaging
- Abstract
Introduction: Since patients with pharyngeal squamous cell carcinoma (SCC) often have multiple pharyngeal lesions, evaluation of pharyngeal lesions before endoscopic resection (ER) is important. However, detailed endoscopic observation of the entire pharyngeal mucosa under conscious sedation is difficult. We examined the usefulness of endoscopic surveillance with narrow band imaging (NBI) and lugol staining for detection of pharyngeal sublesions during ER for pharyngeal SCC under general anesthesia (endoscopic surveillance during treatment; ESDT)., Methods: From January 2021 through June 2022, we examined 78 patients who were diagnosed with superficial pharyngeal SCC and underwent ER. They underwent the ESDT and for patients who were diagnosed with new lesions of pharyngeal SCC or high-grade dysplasia (HGD) that were not detected in the endoscopic examination before treatment, ER were performed simultaneously for new lesions and the main lesions. The primary endpoint of this study was the detection rate of new lesions of pharyngeal SCC or HGD in the ESDT., Results: Fifteen of the 78 patients were diagnosed as having undetected new pharyngeal lesions in the ESDT and 10 (12.8%) (95% CI 6.9-22.2%) were histopathologically confirmed to have new lesions of pharyngeal SCC or HGD. Among the 13 lesions of SCC or HGD, 8 were found by NBI observation; however, 5 were undetectable using NBI but detectable by lugol staining. All of the 13 lesions had endoscopic findings of pink color sign on lugol staining., Conclusions: Endoscopic surveillance for pharyngeal sublesions during ER for pharyngeal SCC is feasible and useful., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
- Published
- 2024
- Full Text
- View/download PDF
13. Sugar binding of sodium-glucose cotransporters analyzed by voltage-clamp fluorometry.
- Author
-
Watabe E, Kawanabe A, Kamitori K, Ichihara S, and Fujiwara Y
- Subjects
- Animals, Humans, Protein Binding, Patch-Clamp Techniques, Galactose metabolism, Fructose metabolism, Fructose chemistry, Binding Sites, Sodium-Glucose Transporter 1 metabolism, Sodium-Glucose Transporter 1 genetics, Sodium-Glucose Transporter 1 chemistry, Fluorometry methods, Xenopus laevis, Glucose metabolism, Oocytes metabolism
- Abstract
Sugar absorption is crucial for life and relies on glucose transporters, including sodium-glucose cotransporters (SGLTs). Although the structure of SGLTs has been resolved, the substrate selectivity of SGLTs across diverse isoforms has not been determined owing to the complex substrate-recognition processes and limited analysis methods. Therefore, this study used voltage-clamp fluorometry (VCF) to explore the substrate-binding affinities of human SGLT1 in Xenopus oocytes. VCF analysis revealed high-affinity binding of D-glucose and D-galactose, which are known transported substrates. D-fructose, which is not a transported substrate, also bound to SGLT1, suggesting potential recognition despite the lack of transport activity. VCF analysis using the T287N mutant of the substrate-binding pocket, which has reduced D-glucose transport capacity, showed that its D-galactose-binding affinity exceeded its D-glucose-binding affinity. This suggests that the change in the VCF signal was due to substrate binding to the binding pocket. Both D-fructose and L-sorbose showed similar binding affinities, indicating that SGLT1 preferentially binds to pyranose-form sugars, including D-fructopyranose. Electrophysiological analysis confirmed that D-fructose binding did not affect the SGLT1 transport function. The significance of the VCF assay lies in its ability to measure sugar-protein interactions in living cells, thereby bridging the gap between structural analyses and functional characterizations of sugar transporters. Our findings also provide insights into SGLT substrate selectivity and the potential for developing medicines with reduced side effects by targeting non-glucose sugars with low bioreactivity., Competing Interests: Conflict of interest The authors declare that they have no conflicts of interest with the contents of this article., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
14. Two cases of strangulated bowel obstruction due to exposed vessel and nerve after laparoscopic and robot-assisted lateral lymph node dissection (LLND) for rectal cancer.
- Author
-
Fujiwara R, Yano M, Matsumoto M, Higashihara T, Tsudaka S, Hashida S, Ichihara S, and Otani H
- Abstract
Background: The majority of small bowel obstructions (SBO) are caused by adhesion due to abdominal surgery. Internal hernias, a very rare cause of SBO, can arise from exposed blood vessels and nerves during pelvic lymphadenectomy (PL). In this report, we present two cases of SBO following laparoscopic and robot-assisted lateral lymph node dissection (LLND) for rectal cancer, one case each, of which obstructions were attributed to the exposure of blood vessels and nerves during the procedures., Case Presentation: Case 1: A 68-year-old man underwent laparoscopic perineal rectal amputation and LLND for rectal cancer. Four years and three months after surgery, he visited to the emergency room with a chief complaint of left groin pain. Computed tomography (CT) revealed a closed-loop in the left pelvic cavity. We performed an open surgery to find that the small intestine was fitted into the gap between the left obturator nerve and the left pelvic wall, which was exposed by LLND. The intestine was not resected because coloration and peristalsis of the intestine improved after the hernia was released. The obturator nerve was preserved. Case 2: A 57-year-old man underwent a robot-assisted rectal amputation with LLND for rectal cancer. Eight months after surgery, he presented to the emergency room with a complaint of abdominal pain. CT revealed a closed-loop in the right pelvic cavity, and he underwent a laparoscopic surgery with a diagnosis of strangulated SBO. The small intestine was strangulated by an internal hernia caused by the right umbilical arterial cord, which was exposed by LLND. The incarcerated small intestine was released from the gap between the umbilical arterial cord and the pelvic wall. No bowel resection was performed. The umbilical arterial cord causing the internal hernia was resected., Conclusion: Although strangulated SBO due to an exposed intestinal cord after PL has been a rare condition to date, it is crucial for surgeons to keep this condition in mind., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
- View/download PDF
15. Quantitative assessment of nano-plastic aerosol particles emitted during machining of carbon fiber reinforced plastic.
- Author
-
Fujitani Y, Ikegami A, Morikawa K, Kumoi J, Yano T, Watanabe A, Shiono A, Watanabe C, Teramae N, Ichihara G, and Ichihara S
- Abstract
Focusing on the relatively unexplored presence of micro- and nano-plastic aerosol particles, this study quantitatively assessed the emission of nano-plastic particles during the machining of carbon fiber reinforced plastic (CFRP) in the working environment. Measurements of aerosol particles smaller than 1 µm in size were performed by aerosol mass spectrometry. The findings revealed that concentrations of carbonous aerosol particles (organic aerosol and refractory black carbon (rBC)) were higher during working hours than during non-working hours. Positive matrix factorization identified CFRP particles as a significant source, contributing an average of approximately 30% of concentration of carbonous aerosol particles during working hours. This source apportionment was corroborated by the presence of bisphenol A and F fragments, principal components of the epoxy resins used in CFRP, and was corroborated by similarities to the carbon cluster ion distribution observed in rBC during CFRP pipe-cutting operations. Further, the particle size distribution suggested the existence of plastic aerosol particles smaller than 100 nm. This study established the method to quantitatively distinguish nano-plastic aerosol particles from other aerosol particles in high temporal resolution and these techniques are useful for accurately assessing exposure to nano-plastic aerosol particles in working environments., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
16. Multiple gastric squamous metaplasias with atypical differentiation showing esophageal subepithelial capillary network-like vessels.
- Author
-
Hamamoto H, Akahira J, and Ichihara S
- Subjects
- Humans, Esophagus diagnostic imaging, Esophagus surgery, Stomach, Metaplasia, Carcinoma, Squamous Cell, Esophageal Neoplasms
- Published
- 2024
- Full Text
- View/download PDF
17. Genetic drivers of heterogeneity in type 2 diabetes pathophysiology.
- Author
-
Suzuki K, Hatzikotoulas K, Southam L, Taylor HJ, Yin X, Lorenz KM, Mandla R, Huerta-Chagoya A, Melloni GEM, Kanoni S, Rayner NW, Bocher O, Arruda AL, Sonehara K, Namba S, Lee SSK, Preuss MH, Petty LE, Schroeder P, Vanderwerff B, Kals M, Bragg F, Lin K, Guo X, Zhang W, Yao J, Kim YJ, Graff M, Takeuchi F, Nano J, Lamri A, Nakatochi M, Moon S, Scott RA, Cook JP, Lee JJ, Pan I, Taliun D, Parra EJ, Chai JF, Bielak LF, Tabara Y, Hai Y, Thorleifsson G, Grarup N, Sofer T, Wuttke M, Sarnowski C, Gieger C, Nousome D, Trompet S, Kwak SH, Long J, Sun M, Tong L, Chen WM, Nongmaithem SS, Noordam R, Lim VJY, Tam CHT, Joo YY, Chen CH, Raffield LM, Prins BP, Nicolas A, Yanek LR, Chen G, Brody JA, Kabagambe E, An P, Xiang AH, Choi HS, Cade BE, Tan J, Broadaway KA, Williamson A, Kamali Z, Cui J, Thangam M, Adair LS, Adeyemo A, Aguilar-Salinas CA, Ahluwalia TS, Anand SS, Bertoni A, Bork-Jensen J, Brandslund I, Buchanan TA, Burant CF, Butterworth AS, Canouil M, Chan JCN, Chang LC, Chee ML, Chen J, Chen SH, Chen YT, Chen Z, Chuang LM, Cushman M, Danesh J, Das SK, de Silva HJ, Dedoussis G, Dimitrov L, Doumatey AP, Du S, Duan Q, Eckardt KU, Emery LS, Evans DS, Evans MK, Fischer K, Floyd JS, Ford I, Franco OH, Frayling TM, Freedman BI, Genter P, Gerstein HC, Giedraitis V, González-Villalpando C, González-Villalpando ME, Gordon-Larsen P, Gross M, Guare LA, Hackinger S, Hakaste L, Han S, Hattersley AT, Herder C, Horikoshi M, Howard AG, Hsueh W, Huang M, Huang W, Hung YJ, Hwang MY, Hwu CM, Ichihara S, Ikram MA, Ingelsson M, Islam MT, Isono M, Jang HM, Jasmine F, Jiang G, Jonas JB, Jørgensen T, Kamanu FK, Kandeel FR, Kasturiratne A, Katsuya T, Kaur V, Kawaguchi T, Keaton JM, Kho AN, Khor CC, Kibriya MG, Kim DH, Kronenberg F, Kuusisto J, Läll K, Lange LA, Lee KM, Lee MS, Lee NR, Leong A, Li L, Li Y, Li-Gao R, Ligthart S, Lindgren CM, Linneberg A, Liu CT, Liu J, Locke AE, Louie T, Luan J, Luk AO, Luo X, Lv J, Lynch JA, Lyssenko V, Maeda S, Mamakou V, Mansuri SR, Matsuda K, Meitinger T, Melander O, Metspalu A, Mo H, Morris AD, Moura FA, Nadler JL, Nalls MA, Nayak U, Ntalla I, Okada Y, Orozco L, Patel SR, Patil S, Pei P, Pereira MA, Peters A, Pirie FJ, Polikowsky HG, Porneala B, Prasad G, Rasmussen-Torvik LJ, Reiner AP, Roden M, Rohde R, Roll K, Sabanayagam C, Sandow K, Sankareswaran A, Sattar N, Schönherr S, Shahriar M, Shen B, Shi J, Shin DM, Shojima N, Smith JA, So WY, Stančáková A, Steinthorsdottir V, Stilp AM, Strauch K, Taylor KD, Thorand B, Thorsteinsdottir U, Tomlinson B, Tran TC, Tsai FJ, Tuomilehto J, Tusie-Luna T, Udler MS, Valladares-Salgado A, van Dam RM, van Klinken JB, Varma R, Wacher-Rodarte N, Wheeler E, Wickremasinghe AR, van Dijk KW, Witte DR, Yajnik CS, Yamamoto K, Yamamoto K, Yoon K, Yu C, Yuan JM, Yusuf S, Zawistowski M, Zhang L, Zheng W, Raffel LJ, Igase M, Ipp E, Redline S, Cho YS, Lind L, Province MA, Fornage M, Hanis CL, Ingelsson E, Zonderman AB, Psaty BM, Wang YX, Rotimi CN, Becker DM, Matsuda F, Liu Y, Yokota M, Kardia SLR, Peyser PA, Pankow JS, Engert JC, Bonnefond A, Froguel P, Wilson JG, Sheu WHH, Wu JY, Hayes MG, Ma RCW, Wong TY, Mook-Kanamori DO, Tuomi T, Chandak GR, Collins FS, Bharadwaj D, Paré G, Sale MM, Ahsan H, Motala AA, Shu XO, Park KS, Jukema JW, Cruz M, Chen YI, Rich SS, McKean-Cowdin R, Grallert H, Cheng CY, Ghanbari M, Tai ES, Dupuis J, Kato N, Laakso M, Köttgen A, Koh WP, Bowden DW, Palmer CNA, Kooner JS, Kooperberg C, Liu S, North KE, Saleheen D, Hansen T, Pedersen O, Wareham NJ, Lee J, Kim BJ, Millwood IY, Walters RG, Stefansson K, Ahlqvist E, Goodarzi MO, Mohlke KL, Langenberg C, Haiman CA, Loos RJF, Florez JC, Rader DJ, Ritchie MD, Zöllner S, Mägi R, Marston NA, Ruff CT, van Heel DA, Finer S, Denny JC, Yamauchi T, Kadowaki T, Chambers JC, Ng MCY, Sim X, Below JE, Tsao PS, Chang KM, McCarthy MI, Meigs JB, Mahajan A, Spracklen CN, Mercader JM, Boehnke M, Rotter JI, Vujkovic M, Voight BF, Morris AP, and Zeggini E
- Subjects
- Humans, Adipocytes metabolism, Chromatin genetics, Chromatin metabolism, Coronary Artery Disease complications, Coronary Artery Disease genetics, Diabetic Nephropathies complications, Diabetic Nephropathies genetics, Endothelial Cells metabolism, Enteroendocrine Cells, Epigenomics, Islets of Langerhans metabolism, Multifactorial Inheritance genetics, Peripheral Arterial Disease complications, Peripheral Arterial Disease genetics, Single-Cell Analysis, Diabetes Mellitus, Type 2 classification, Diabetes Mellitus, Type 2 complications, Diabetes Mellitus, Type 2 genetics, Diabetes Mellitus, Type 2 pathology, Diabetes Mellitus, Type 2 physiopathology, Disease Progression, Genetic Predisposition to Disease genetics, Genome-Wide Association Study
- Abstract
Type 2 diabetes (T2D) is a heterogeneous disease that develops through diverse pathophysiological processes
1,2 and molecular mechanisms that are often specific to cell type3,4 . Here, to characterize the genetic contribution to these processes across ancestry groups, we aggregate genome-wide association study data from 2,535,601 individuals (39.7% not of European ancestry), including 428,452 cases of T2D. We identify 1,289 independent association signals at genome-wide significance (P < 5 × 10-8 ) that map to 611 loci, of which 145 loci are, to our knowledge, previously unreported. We define eight non-overlapping clusters of T2D signals that are characterized by distinct profiles of cardiometabolic trait associations. These clusters are differentially enriched for cell-type-specific regions of open chromatin, including pancreatic islets, adipocytes, endothelial cells and enteroendocrine cells. We build cluster-specific partitioned polygenic scores5 in a further 279,552 individuals of diverse ancestry, including 30,288 cases of T2D, and test their association with T2D-related vascular outcomes. Cluster-specific partitioned polygenic scores are associated with coronary artery disease, peripheral artery disease and end-stage diabetic nephropathy across ancestry groups, highlighting the importance of obesity-related processes in the development of vascular outcomes. Our findings show the value of integrating multi-ancestry genome-wide association study data with single-cell epigenomics to disentangle the aetiological heterogeneity that drives the development and progression of T2D. This might offer a route to optimize global access to genetically informed diabetes care., (© 2024. The Author(s).)- Published
- 2024
- Full Text
- View/download PDF
18. [Histiocytic sarcoma derived from the same origin as splenic marginal zone lymphoma revealed by exome analysis].
- Author
-
Komata D, Takahata M, Makino Y, Ishio T, Iwasaki H, Ichihara S, Tsuda M, Tanaka S, and Ibata M
- Subjects
- Humans, Male, Middle Aged, Exome Sequencing, Fatal Outcome, Splenic Neoplasms genetics, Splenic Neoplasms pathology, Splenic Neoplasms diagnosis, Lymphoma, B-Cell, Marginal Zone genetics, Lymphoma, B-Cell, Marginal Zone pathology, Lymphoma, B-Cell, Marginal Zone diagnosis, Lymphoma, B-Cell, Marginal Zone drug therapy, Histiocytic Sarcoma pathology, Histiocytic Sarcoma genetics, Histiocytic Sarcoma diagnosis
- Abstract
Histiocytic sarcoma (HS) is a rare aggressive hematological malignancy reported to occur secondary to B cell lymphoma. We report a case of HS secondary to splenic marginal zone lymphoma (SMZL) complicated by autoimmune hemolytic anemia (AIHA) in a 64-year-old man. He was referred to our department with anemia and was diagnosed as having AIHA. After starting treatment with prednisolone, atypical lymphocytes appeared in his blood tests, and a bone marrow biopsy revealed invasion by B cell lymphoma. A CT scan showed splenomegaly and a pancreatic mass, which confirmed the diagnosis of SMZL. The patient received bendamustine and rituximab as chemotherapy, which rapidly improved the anemia and splenomegaly and reduced atypical lymphocytes. However, left lumbar back pain appeared along with an increase in the pancreatic mass, and he died suddenly of acute renal failure. An autopsy revealed that the tumor had invaded several organs including the pancreas, and immunohistochemistry was positive for CD163, leading to the diagnosis of HS. Furthermore, the specimens of SMZL and HS were positive for IgH gene reconstitution, and exome analysis showed genetic abnormalities in 226 genes including CARD11, suggesting that the SMZL and HS had the same origin.
- Published
- 2024
- Full Text
- View/download PDF
19. Transcriptome analysis of the cerebral cortex of acrylamide-exposed wild-type and IL-1β-knockout mice.
- Author
-
Fergany A, Zong C, Ekuban FA, Wu B, Ueha S, Shichino S, Matsushima K, Iwakura Y, Ichihara S, and Ichihara G
- Subjects
- Animals, Mice, Brain, Cerebral Cortex, Gene Expression Profiling, Mice, Inbred C57BL, Acrylamide toxicity, Neurotoxicity Syndromes genetics
- Abstract
Acrylamide is an environmental electrophile that has been produced in large amounts for many years. There is concern about the adverse health effects of acrylamide exposure due to its widespread industrial use and also presence in commonly consumed foods and others. IL-1β is a key cytokine that protects the brain from inflammatory insults, but its role in acrylamide-induced neurotoxicity remains unknown. We reported recently that deletion of IL-1β gene exacerbates ACR-induced neurotoxicity in mice. The aim of this study was to identify genes or signaling pathway(s) involved in enhancement of ACR-induced neurotoxicity by IL-1β gene deletion or ACR-induced neurotoxicity to generate a hypothesis mechanism explaining ACR-induced neurotoxicity. C57BL/6 J wild-type and IL-1β KO mice were exposed to ACR at 0, 12.5, 25 mg/kg by oral gavage for 7 days/week for 4 weeks, followed by extraction of mRNA from mice cerebral cortex for RNA sequence analysis. IL-1β deletion altered the expression of genes involved in extracellular region, including upregulation of PFN1 gene related to amyotrophic lateral sclerosis and increased the expression of the opposite strand of IL-1β. Acrylamide exposure enhanced mitochondria oxidative phosphorylation, synapse and ribosome pathways, and activated various pathways of different neurodegenerative diseases, such as Alzheimer disease, Parkinson disease, Huntington disease, and prion disease. Protein network analysis suggested the involvement of different proteins in related to learning and cognitive function, such as Egr1, Egr2, Fos, Nr4a1, and Btg2. Our results identified possible pathways involved in IL-1β deletion-potentiated and ACR-induced neurotoxicity in mice., (© 2023. The Author(s).)
- Published
- 2024
- Full Text
- View/download PDF
20. An increased relative eosinophil count as a predictive dynamic biomarker in non-small cell lung cancer patients treated with immune checkpoint inhibitors.
- Author
-
Takeuchi E, Ogino H, Kondo K, Okano Y, Ichihara S, Kunishige M, Kadota N, Machida H, Hatakeyama N, Naruse K, Nokihara H, Shinohara T, and Nishioka Y
- Subjects
- Humans, Aged, Immune Checkpoint Inhibitors, Eosinophils, Retrospective Studies, Biomarkers, Carcinoma, Non-Small-Cell Lung drug therapy, Lung Neoplasms drug therapy
- Abstract
Background: An increased relative eosinophil count (REC) has potential as a predictive biomarker for a beneficial clinical response and outcome to cancer immunotherapies. Therefore, the present study investigated the impact of an increased posttreatment REC on the prognosis of non-small cell lung cancer (NSCLC) patients treated with immune checkpoint inhibitors (ICIs)., Methods: We retrospectively reviewed all 151 patients diagnosed with NSCLC and treated with ICI monotherapy and blood test data between March 2016 and August 2021 at National Hospital Organization Kochi Hospital and Tokushima University., Results: A total of 151 patients with a mean age of 69 years were included. REC after 4 weeks of initial ICI monotherapy was higher than pretreatment REC in 87 patients but not in 64. REC after 4 weeks of the ICI treatment with and without an increased REC were 4.4 and 1.8%, respectively (p < 0.001). Disease control rates (DCR) were significantly higher in patients with than in those without an increased REC (84% vs. 47%, p < 0.001). The median overall survival (OS) of lung cancer patients with or without an increased REC were 674 and 234 days, respectively. A Kaplan-Meier univariate analysis revealed a significant difference in OS between the two groups (p < 0.001). A Cox proportional regression analysis identified an increased REC as an independent predictor of OS (p = 0.003)., Conclusion: ICI-treated NSCLC patients with an increased REC after 4 weeks of treatment had a better DCR and prognosis than the other patients examined., (© 2023 The Authors. Thoracic Cancer published by John Wiley & Sons Australia, Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.