8 results on '"Tanemura, Atsushi"'
Search Results
2. Tumor response evaluation in patients with malignant melanoma undergoing immune checkpoint inhibitor therapy and prognosis prediction using 18F-FDG PET/CT: multicenter study for comparison of EORTC, PERCIST, and imPERCIST.
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Kitajima, Kazuhiro, Watabe, Tadashi, Nakajo, Masatoyo, Ishibashi, Mana, Daisaki, Hiromitsu, Soeda, Fumihiko, Tanemura, Atsushi, Kanekura, Takuro, Yamazaki, Naoya, and Ito, Kimiteru
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THERAPEUTIC use of monoclonal antibodies ,RESEARCH ,IMMUNE checkpoint inhibitors ,MELANOMA ,LOG-rank test ,METASTASIS ,CANCER patients ,RADIOPHARMACEUTICALS ,POSITRON emission tomography ,NIVOLUMAB ,DEOXY sugars ,COMPUTED tomography ,PROGRESSION-free survival ,IMMUNOTHERAPY ,PROPORTIONAL hazards models ,THERAPEUTICS - Abstract
Objective: In malignant melanoma patients treated with immune checkpoint inhibitor (ICI) therapy, three different FDG-PET criteria, European Organization for Research and Treatment of Cancer (EORTC), PET Response Criteria in Solid Tumors (PERCIST), immunotherapy-modified PERCIST (imPERCIST), were compared regarding response evaluation and prognosis prediction using standardized uptake value (SUV) harmonization of results obtained with various PET/CT scanners installed at different centers. Materials and methods: Malignant melanoma patients (n = 27) underwent FDG-PET/CT examinations before and again 3 to 9 months after therapy initiation (nivolumab, n = 21; pembrolizumab, n = 6) with different PET scanners at five hospitals. EORTC, PERCIST, and imPERCIST criteria were used to evaluate therapeutic response, then concordance of the results was assessed using Cohen's κ coefficient. Log-rank and Cox methods were employed to determine progression-free (PFS) and overall (OS) survival. Results: Complete metabolic response (CMR)/partial metabolic response (PMR)/stable metabolic disease (SMD)/progressive metabolic disease (PMD) with harmonized EORTC, PERCIST, and imPERCIST was seen in 3/5/4/15, 4/5/3/15, and 4/5/5/13 patients, respectively. Nearly perfect concordance between each pair of criteria was noted (κ = 0.939–0.972). Twenty patients showed progression and 14 died from malignant melanoma after a median 19.2 months. Responders (CMR/PMR) showed significantly longer PFS and OS than non-responders (SMD/PMD) (harmonized EORTC: p < 0.0001 and p = 0.011; harmonized PERCIST: p < 0.0001 and p = 0.0012; harmonized imPERCIST: p < 0.0001 and p = 0.0012, respectively). Conclusions: All harmonized FDG-PET criteria (EORTC, PERCIST, imPERCIST) showed accuracy for response evaluation of ICI therapy and prediction of malignant melanoma patient prognosis. Additional studies to determine their value in larger study populations will be necessary. [ABSTRACT FROM AUTHOR]
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- 2022
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3. Etanercept is safely used for treating psoriatic arthritis in a patient complicated with type 1 hereditary angioedema.
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Umegaki, Noriko, Kira, Masahiro, Horiuchi, Takahiko, Itoi, Saori, Tani, Mamori, Yokomi, Akinori, Tanemura, Atsushi, Miyahara, Hisaaki, Hatanaka, Michiyo, Kitamura, Hajime, Kitano, Etsuko, and Katayama, Ichiro
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ETANERCEPT ,MEDICATION safety ,PSORIATIC arthritis ,ANGIONEUROTIC edema ,GENETIC disorders ,RHEUMATOID arthritis ,PROTEIN deficiency ,THERAPEUTICS - Abstract
Hereditary angioedema (HAE) is a life-threatening disorder caused by deficiency or dysfunction of the C1 inhibitor protein. Patients with HAE are restricted in various medical treatments, which can induce an HAE attack. We herein report the first case of psoriatic arthritis (PSA) with type 1 HAE successfully treated with 25 mg of etanercept without HAE attack. Etanercept may represent a useful choice for treating patients with HAE accompanied by intractable PSA and rheumatoid arthritis (RA). [ABSTRACT FROM AUTHOR]
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- 2012
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4. Successful Treatment of Multiple Bursal Cysts in Systemic Sclerosis.
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Tanemura, Atsushi, Yamaguchi, Yuji, Kubo, Tateki, Yano, Kenji, and Itami, Satoshi
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TREATMENT of bursitis , *NONARTICULAR rheumatism , *THERAPEUTICS - Abstract
background. Bursitis frequently occurs in the various conditions of autoimmune disorders including rheumatoid arthritis, but there have been few cases of effusive bursitis in systemic sclerosis. objective. To present a case of systemic sclerosis with multiple bursitis on upper, lower extremities, and trunk with or without joint involvement. methods. Case report and review of the literature. results. Multiple asymptomatic cystic masses contained yellow and chalky sterile fluid, all of which were diagnosed as effusive bursitis. Most of them were treated with a surgical resection, a continuous drainage, and an injection of highly concentrated ethanol into their internal spaces. However, an intrabursal injection of emulsified triamcinolone acetonide was the only effective treatment for the giant mass that occurred on the right chest wall. conclusion. Successful treatment of multiple bursal cysts with systemic sclerosis was presented. [ABSTRACT FROM AUTHOR]
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- 2002
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5. Physician-initiated first-in-human clinical study using a novel angiogenic peptide, AG30/5C, for patients with severe limb ulcers.
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Nakagami, Hironori, Yamaoka, Toshifumi, Hayashi, Misa, Tanemura, Atsushi, Takeya, Yasushi, Kurinami, Hitomi, Sugimoto, Ken, Nakamura, Ayumi, Tomono, Kazunori, Tamai, Katsuto, Katayama, Ichiro, Rakugi, Hiromi, and Kaneda, Yasufumi
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NEOVASCULARIZATION inhibitors ,ANTI-infective agents ,DIABETES ,DRUG resistance ,CLINICAL drug trials ,ISCHEMIA ,LEG ulcers ,NEOVASCULARIZATION ,PATIENT safety ,PEPTIDES ,WERNER'S syndrome ,WOUND healing ,TREATMENT effectiveness ,METHICILLIN-resistant staphylococcus aureus ,THERAPEUTICS - Abstract
Aim In patients with diabetes or ischemia, angiogenesis and infection control are required for chronic leg ulcers, which substantially impair patients' quality of life. We developed a novel functional peptide, named AG30/5C, with angiogenic and anti-microbial properties. Treatment with AG30/5C significantly accelerated the wound healing of full-thickness defects in mice. To evaluate the safety of AG30/5C in the treatment of leg ulcers, a physician-initiated clinical study was carried out. Methods The first-in-human trial was designed as an open-label treatment with AG30/5C (0.1 mg/mL) given twice per day for 11 days, and with a follow-up period of 17 days. The inclusion criteria for severe skin ulcers were: (i) diabetes or critical limb ischemia; (ii) resistance to standard therapy for 1 month; and (iii) detection of methicillin-resistant Staphylococcus aureus in the skin ulcer. Results Four patients were enrolled in this study, and two patients met these criteria. For the evaluation of safety, three adverse effects were reported as possibly related to AG30/5C treatment; however, these adverse effects were not severe and resolved during or after treatment. Thus, there were no safety concerns. In both patients, the size of the ulcer decreased after treatment (44.62% and 10.23% decrease), and further decreased after the follow-up period (73.85% and 10.23% decrease). The former patient was diagnosed as Werner syndrome and the skin ulcer was resistant to standard therapy; however, it was sensitive to AG30/5C treatment. Conclusions Topical treatment with AG30/5C for severe leg ulcers was safe, well tolerated and effective. Geriatr Gerontol Int 2017; 17: 2150-2156. [ABSTRACT FROM AUTHOR]
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- 2017
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6. The effect of rhododendrol inhibition of NF-κB on melanocytes in the presence of tyrosinase.
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Arase, Noriko, Yang, Lingli, Tanemura, Atsushi, Yang, Fei, Suenaga, Tadahiro, Arase, Hisashi, and Katayama, Ichiro
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RHODODENDRONS , *FADE creams (Cosmetics) , *DRUG side effects , *VITILIGO , *MELANOCYTES , *PHENOL oxidase , *TRANSCRIPTION factors , *PATIENTS , *THERAPEUTICS - Published
- 2016
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7. Dysregulation of autophagy in melanocytes contributes to hypopigmented macules in tuberous sclerosis complex.
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Yang, Fei, Yang, Lingli, Wataya-Kaneda, Mari, Hasegawa, Junya, Yoshimori, Tamotsu, Tanemura, Atsushi, Tsuruta, Daisuke, and Katayama, Ichiro
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TUBEROUS sclerosis , *AUTOPHAGY , *MELANOCYTES , *HYPOPIGMENTATION , *RAPAMYCIN , *BIOCHEMICAL substrates , *THERAPEUTICS - Abstract
Background Tuberous sclerosis complex ( TSC ) gene mutations lead to constitutive activation of the mammalian target of rapamycin (mTOR) pathway, resulting in a broad range of symptoms. Hypopigmented macules are the earliest sign. Although we have already confirmed that topical rapamycin treatment (an mTOR inhibitor) protects patients with TSC against macular hypopigmentation, the pathogenesis of such lesions remains poorly understood. Objective Recently emerging evidence supports a role for autophagy in skin pigmentation. Herein, we investigated the impact of autophagic dysregulation on TSC-associated hypopigmentation. Methods Skin samples from 10 patients with TSC, each bearing characteristic hypopigmented macules, and 6 healthy donors were subjected to immunohistochemical and electron microscopic analyses. In addition, TSC2 -knockdown (KD) was investigated in human epidermal melanocytes by melanin content examination, real-time PCR, western blotting analyses, and intracellular immunofluorescence staining. Results Activation of the mTOR signaling pathway decreased melanocytic pigmentation in hypopigmented macules of patients with TSC and in TSC2 -KD melanocytes. In addition, LC3 expression (a marker of autophagy) and autophagosome counts increased, whereas, intracellular accumulation of autophagic degradative substrates (p62 and ubiquitinated proteins) was evident in TSC2 -KD melanocytes. Furthermore, depigmentation in TSC2 -KD melanocytes was accelerated by inhibiting autophagy ( ATG7- KD or bafilomycin A1-pretreatment) and was completely reversed by induction of autophagy via mTOR-dependent (rapamycin) or mTOR-independent (SMER28) exposure. Finally, dysregulation of autophagy, marked by increased LC3 expression and accumulation of ubiquitinated proteins, was also observed in melanocytes of TSC-related hypopigmented macules. Conclusion Our data demonstrate that melanocytes of patients with TSC display autophagic dysregulation, which thereby reduced pigmentation, serving as the basis for the hypomelanotic macules characteristic of TSC. [ABSTRACT FROM AUTHOR]
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- 2018
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8. Impact of Sedative and Non-Sedative Antihistamines on the Impaired Productivity and Quality of Life in Patients with Pruritic Skin Diseases.
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Murota, Hiroyuki, Kitaba, Shun, Tani, Mamori, Wataya-Kaneda, Mari, Azukizawa, Hiroaki, Tanemura, Atsushi, Umegaki, Noriko, Terao, Mika, Kotobuki, Yorihisa, and Katayama, Ichiro
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ANTIHISTAMINES , *SEDATIVES , *SKIN diseases , *QUALITY of life , *DERMATOLOGY , *THERAPEUTICS - Abstract
Background: The impairment that pruritic skin diseases have on patient productivity at work, in the classroom, and in daily activities is substantial and needs to be characterized. The objective of this study was to determine how pruritic skin diseases impact patient productivity and quality of life (QOL), in order to improve the measurement of these endpoints to allow the influence of treatment options including sedative and non-sedative antihistamines to be analyzed. Methods: The impact of pruritic skin diseases and the effect of antihistamine therapy on work, classroom, and daily productivity were evaluated using the Work Productivity Assessment Index-Allergy Specific Questionnaire. The intensity of itch and patient QOL were assessed using a visual analogue scale and Skindex-16, respectively. Results: Pruritic skin diseases resulted in significant impairment of work, classroom, and daily productivity. The severity of overall work impairment in atopic dermatitis (AD), urticaria, and prurigo was higher than for other diseases analyzed. However, classroom activity was more adversely affected in patients with urticaria relative to other diseases. All pruritic diseases in this study negatively impacted daily activity to a similar degree. Impaired productivity was significantly improved in patients taking non-sedative antihistamines for 1 month, and the improvements correlated with the alleviation of itch and improved QOL. Conclusions: These results indicate that pruritic skin diseases reduce patient productivity at work, in the classroom, and during daily activities, and that non-sedative antihistamines may offer an advantage over sedative antihistamines for alleviating certain negative consequences of these skin diseases. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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