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Koyasu N, Hyodo F, Shoda S, Iwasaki R, Tomita H, Masaki T, Mori T, Matsuo M. Noninvasive Redox Imaging of Tumor Redox Status for Early Detection of Radiation Response using In Vivo DNP-MRI. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Hamamoto M, Arita K, Maeda K, Oda H, Doi S, Masaki T. SUN-093 INDIVIDUAL CHARACTERISTICS AND RECOGNITION FOR THE IMPORTANCE OF COOPERATION WITH CO-WORKERS IN NURSES WHO TAKE CARE OF HEMODIALYSIS PATIENTS RECEIVING HOME CARE. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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3
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Yawata T, Hamamoto M, Takahashi K, Kihara E, Mise K, Arita K, Maeda K, Hiroaki O, Doi S, Masaki T. MON-128 COMPARISON OF LABORATORY AND CLINICL FEATURES BETWEEN HIGH- AND SUPERHIGH-FLUX MEMBRAES IN PATIENTS UNDERGOIN MAINTENANCE HEMODIALYSIS. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Takahashi K, Sasaki A, Shigemori M, Kanbara C, Ikeda M, Kita K, Nomura K, Sugiyama S, Oda H, Masaki T. MON-307 COOKING PRACTICES RELIEVE UNEASINESS FOR THE DISEASE AND DIET THERAPY IN PATIENTS WITH CHRONIC KIDNEY DISEASE. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.1117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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5
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Himoto T, Miyatake K, Maeba T, Masaki T. Verification of sarcopenia in patients with nonalcoholic fatty liver disease. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Tochigi K, Masaki T, Nakajima A, Yamazaki K, Inagaki A, Koike S. Detection of arboreal feeding signs by Asiatic black bears: effects of hard mast production at individual tree and regional scales. J Zool (1987) 2018. [DOI: 10.1111/jzo.12564] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. Tochigi
- Tokyo University of Agriculture and Technology Fuchu, Tokyo Japan
| | - T. Masaki
- Forestry and Forest Products Research Institute Tsukuba Ibaraki Japan
| | - A. Nakajima
- Tokyo University of Agriculture and Technology Fuchu, Tokyo Japan
| | | | - A. Inagaki
- Tokyo University of Agriculture and Technology Fuchu, Tokyo Japan
| | - S. Koike
- Tokyo University of Agriculture and Technology Fuchu, Tokyo Japan
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7
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Tamori A, Abiru S, Enomoto H, Kioka K, Korenaga M, Tani J, Enomoto M, Sugiyama M, Masaki T, Kawada N, Yatsuhashi H, Nishiguchi S, Mizokami M. Low incidence of hepatitis B virus reactivation and subsequent hepatitis in patients with chronic hepatitis C receiving direct-acting antiviral therapy. J Viral Hepat 2018; 25:608-611. [PMID: 29194858 DOI: 10.1111/jvh.12840] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 10/30/2017] [Indexed: 12/26/2022]
Abstract
To determine the clinical characteristics of hepatitis B virus (HBV) reactivation in patients undergoing interferon-free antihepatitis C virus (HCV) therapy, we examined HBV DNA in 25 HBV co-infected patients and 765 patients with resolved HBV infection during and after treatment with direct-acting antiviral agents (DAAs). Among those with HCV genotype 1, asunaprevir plus daclatasvir was administered to 160 patients, sofosbuvir (SOF) plus ledipasvir to 438 patients and paritaprevir plus ombitasvir and ritonavir to 25 patients. In total, 167 patients with genotype 2 were treated with SOF plus ribavirin. Three patients with an HBV DNA level ≥2000 IU/mL were treated with entecavir before anti-HCV therapy, without reactivation of HBV. In 3 of 22 (12%) HBV surface antigen (HBsAg)-positive patients with an HBV DNA level <2000 IU/mL, the viral load increased during treatment. However, hepatitis flare did not occur in these patients. There was no significant difference in clinical history between patients with and without HBV reactivation. Among 765 patients with resolved HBV infection, HBV reactivation occurred in 1 (0.1%) patient after initial resolution, whose HBV DNA level spontaneously decreased after DAA therapy. We compared anti-HBs titres at baseline with those at post-DAA therapy in 123 patients without HBsAg. There was no significant difference in anti-HBs levels between the two points (P = .79). In conclusion, HBV reactivation was rare in HBsAg-negative patients treated with DAA therapy. Additionally, hepatitis did not occur in HBV-reactivated patients with a baseline HBV DNA level <2000 IU/mL before DAA therapy.
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Affiliation(s)
- A Tamori
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - S Abiru
- Clinical Research Center, National Hospital Organization, Nagasaki Medical Center, Omura, Japan
| | - H Enomoto
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - K Kioka
- Department of Hepatology, Osaka City General Hospital, Osaka, Japan
| | - M Korenaga
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
| | - J Tani
- Department of Gastroenterology and Neurology Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - M Enomoto
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Sugiyama
- Genome Medical Sciences Project, National Center for Global Health and Medicine, Ichikawa, Japan
| | - T Masaki
- Department of Gastroenterology and Neurology Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - N Kawada
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - H Yatsuhashi
- Clinical Research Center, National Hospital Organization, Nagasaki Medical Center, Omura, Japan
| | - S Nishiguchi
- Division of Hepatobiliary and Pancreatic Disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - M Mizokami
- Genome Medical Sciences Project, National Center for Global Health and Medicine, Ichikawa, Japan
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8
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Masaki T, Nakano E, Okamura K, Ono R, Sugasawa K, Lee MH, Suzuki T, Nishigori C. A case of xeroderma pigmentosum complementation group C with diverse clinical features. Br J Dermatol 2018; 178:1451-1452. [PMID: 29330851 DOI: 10.1111/bjd.16339] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- T Masaki
- Division of Dermatology, Internal Related, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - E Nakano
- Division of Dermatology, Internal Related, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - K Okamura
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - R Ono
- Division of Dermatology, Internal Related, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - K Sugasawa
- Biological Research Center, Kobe University, 1-1, Rokkodai, Nada-ku, Kobe, 657-8501, Japan
| | - M-H Lee
- Department of Dermatology, School of Medicine, Kyung Hee University, Seoul, Korea
| | - T Suzuki
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - C Nishigori
- Division of Dermatology, Internal Related, Graduate School of Medicine, Kobe University, Kobe, Japan
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Masaki T, Yorioka N, Kyuden Y, Yamashita K, Taniguchi Y, Yamakido M, Tanaka J, Harada S. Factors Influencing Arteriovenous Fistula Dysfunction in Japanese Patients on Chronic Hemodialysis. Int J Artif Organs 2018. [DOI: 10.1177/039139889902200104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Arteriovenous fistula dysfunction is a constant problem in chronic hemodialysis patients. We investigated the factors influencing fistula dysfunction in 184 patients on chronic hemodialysis. Stepwise regression analysis and Cox proportional hazards model were used to assess the relationship between fistula dysfunction and age, sex, duration of hemodialysis, diabetes mellitus, hematocrit, serum creatinine, blood urea nitrogen, KW, prothrombin time, blood pressure, anticoagulant therapy, dose of erythropoietin, calcium channel blocker therapy, and angiotensin-converting enzyme inhibitor therapy. Fistula dysfunction showed a significant relationship with a low systolic blood pressure, a low hematocrit, the presence of diabetes mellitus, and angiotensin-converting enzyme inhibitor therapy. These results suggested that treatment with angiotensin-converting enzyme inhibitors may help to prevent fistula dysfunction.
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Affiliation(s)
- T. Masaki
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
| | - N. Yorioka
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
| | - Y. Kyuden
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
| | - K. Yamashita
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
| | - Y. Taniguchi
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
| | - M. Yamakido
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
| | - J. Tanaka
- Department of Hygiene, Hiroshima University School of Medicine, Hiroshima
| | - S. Harada
- Ichiyou-kai Harada Hospital, Hiroshima - Japan
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10
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Nagakura T, Onda T, likura Y, Endo T, Nagakura H, Masaki T, Nagai H. In Vitro and in Vivo Antigen-Induced Release of High-Molecular Weight Neutrophil Chemotactic Activity from Human Nasal Tissue. ACTA ACUST UNITED AC 2018. [DOI: 10.2500/105065888781693221] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
High molecular weight neutrophil chemotactic activity has been identified in resected human nasal polyps, inferior turbinates, and nasal secretions following antigen challenge. The estimated molecular weight, by gel filtration chromatography, was approximately 600,000. However, a heterogeneity of molecular weight in some patients was recognized. Our results suggest a possible role for high molecular weight-neutrophil chemotactic activity in the pathogenesis of hypersensitivity in the human nasal cavity.
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Affiliation(s)
- T. Nagakura
- Department of Allergy, National Children's Medical Research Center, 3-35-31, Taishido, Setagaya-ku, Toyko 154, Japan
| | - T. Onda
- Department of Allergy, National Children's Medical Research Center, 3-35-31, Taishido, Setagaya-ku, Toyko 154, Japan
| | - Y. likura
- Department of Allergy, National Children's Medical Research Center, 3-35-31, Taishido, Setagaya-ku, Toyko 154, Japan
| | - T. Endo
- Department of Otorhinolaryngology, Jikei Medical School
| | - H. Nagakura
- Department of Otorhinolaryngology, Jikei Medical School
| | - T. Masaki
- Department of Pediatrics, Jikei Medical School
| | - H. Nagai
- Department of Pharmacology, Gifu Pharmaceutical University
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11
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Yorioka N, Masaki T, Ito T, Kushihata S, Nishida Y, Taniguchi Y, Oda H, Yamakido M. Lipid-Lowering Therapy and Coagulation/Fibrinolysis Parameters in Patients on Peritoneal Dialysis. Int J Artif Organs 2018. [DOI: 10.1177/039139880002300105] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- N. Yorioka
- The Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - T. Masaki
- The Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - T. Ito
- The Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - S. Kushihata
- The Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - Y. Nishida
- The Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - Y. Taniguchi
- The Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - H. Oda
- The Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
| | - M. Yamakido
- The Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima - Japan
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12
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Masaki T, Rambukkana A. Global reprogramming effects of M.leprae on mammalian cells. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Koizumi T, Katsutoshi T, Ikuko M, Hiroe T, Okihiro O, Kazuya I, Tetsuo N, Masaki T, Toshiki M. Quantitative analysis of magnetic resonance images during white matter lesion formation in chronic hypertensive model rat. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Hamaguchi T, Shimada Y, Mizusawa J, Sato T, Kato T, Takahashi K, Sugihara K, Saida Y, Ike H, Hase K, Masaki T, Shiozawa M, Sugita A, Nishimura J, Munakata Y, Ikeda S, Nakamura K, Fukuda H. Randomized phase III study of adjuvant chemotherapy with S-1 versus capecitabine in patients with stage III colorectal cancer: Updated results of Japan Clinical Oncology Group study (JCOG0910). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Yamano T, Yamauchi S, Kimura K, Babaya A, Hamanaka M, Kobayashi M, Fukumoto M, Tsukamoto K, Noda M, Tomita N, Sugihara K, Takemasa I, Hakamada K, Kameyama H, Takii Y, Hase K, Kotake K, Watanabe T, Takahashi K, Kanemitsu Y, Itabashi M, Yano H, Yasuno M, Hasegawa H, Hashiguchi Y, Masaki T, Watanabe M, Maeda K, Komori K, Sakai Y, Ohue M, Akagi Y. Influence of age and comorbidity on prognosis and application of adjuvant chemotherapy in elderly Japanese patients with colorectal cancer: A retrospective multicentre study. Eur J Cancer 2017. [DOI: 10.1016/j.ejca.2017.05.024] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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16
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Kawakami Y, Imamura M, Ikeda H, Suzuki M, Arataki K, Moriishi M, Mori N, Kokoroishi K, Katamura Y, Ezaki T, Ueno T, Ide K, Masaki T, Ohdan H, Chayama K. Pharmacokinetics, efficacy and safety of daclatasvir plus asunaprevir in dialysis patients with chronic hepatitis C: pilot study. J Viral Hepat 2016; 23:850-856. [PMID: 27346670 DOI: 10.1111/jvh.12553] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 04/26/2016] [Indexed: 12/23/2022]
Abstract
The aim of this study was to evaluate the pharmacokinetic profile of daclatasvir (DCV) and asunaprevir (ASV) dual therapy in haemodialysis patients infected with hepatitis C virus (HCV). Eighteen haemodialysis patients and 54 patients with normal renal function were treated with DCV and ASV dual therapy for 24 weeks. We evaluated the pharmacokinetic profiles of DCV and ASV and examined the rate of sustained virological response 12 weeks after the end of treatment (SVR12 ) and incidence of adverse events during treatment of haemodialysis patients infected with chronic HCV genotype 1 infection. To adjust for potential differences in baseline characteristics between haemodialysis patients and patients with normal renal function, we used propensity scores case-control matching methods. Area under the plasma concentration time curve from 0 to 6 h (AUC0-6 h ) of DCV was slightly lower in haemodialysis patients than in patients with normal renal function (P > 0.6). AUC0-6 h of ASV was significantly lower in haemodialysis patients (P = 0.012). SVR12 rates were 100% (18/18) for haemodialysis and 96.2% (52/54) for patients with normal renal function. Changes in mean log10 HCV RNA levels and viral response were higher in haemodialysis patients compared to patients with normal renal function. No discontinuations due to adverse events occurred. In conclusion, DCV and ASV dual therapy for HCV infection is effective and safe with similar results in haemodialysis patients compared to patients with normal renal function.
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Affiliation(s)
- Y Kawakami
- Department of Gastroenterology and Metabolism, Applied Life Sciences, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan.,Liver Research Project Center, Hiroshima University, Hiroshima, Japan
| | - M Imamura
- Department of Gastroenterology and Metabolism, Applied Life Sciences, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan.,Liver Research Project Center, Hiroshima University, Hiroshima, Japan
| | - H Ikeda
- Division of Gastroenterology and Hepatology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - M Suzuki
- Division of Gastroenterology and Hepatology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - K Arataki
- Tsuchiya General Hospital, Hiroshima, Japan
| | - M Moriishi
- Tsuchiya General Hospital, Hiroshima, Japan
| | - N Mori
- Department of Gastroenterology/Liver Center, Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital, Hiroshima, Japan
| | - K Kokoroishi
- Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan
| | - Y Katamura
- Department of Gastroenterology, Onomichi General Hospital, Hiroshima, Japan
| | - T Ezaki
- Department of Nephrology, Onomichi General Hospital, Hiroshima, Japan
| | - T Ueno
- Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan
| | - K Ide
- Department of Surgery, Division of Frontier Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - T Masaki
- Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan
| | - H Ohdan
- Department of Surgery, Division of Frontier Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - K Chayama
- Department of Gastroenterology and Metabolism, Applied Life Sciences, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan. .,Liver Research Project Center, Hiroshima University, Hiroshima, Japan. .,Laboratory for Digestive Diseases, RIKEN Center for Integrative Medical Sciences, The Institute of Physical and Chemical Research (RIKEN), Hiroshima, Japan.
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17
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Ono R, Khan S, Masaki T, Kuschal C, Nishigori C, Chu M, Tamura D, DiGiovanna J, Kraemer K. 402 Precision medicine intervention in xeroderma pigmentosum. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Himoto T, Nomura T, Tani J, Miyoshi H, Morishita A, Yoneyama H, Masaki T. MON-PP063: Contribution of Selenium Deficiency to Insulin Resistance in Patients with HCV-Related Chronic Liver Disease. Clin Nutr 2015. [DOI: 10.1016/s0261-5614(15)30495-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
The mechanisms of actions were investigated in cultured rat aortic vascular smooth muscle A-10 cells. The A-10 cells have a single class of high affinity binding sites for ET with an apparent Mr of 65,000-75,000 on SDS-PAGE. Stimulation of cells with ET induces mobilization of Ca2+ from both intra- and extracellular pools to produce a biphasic increase in cytoplasmic free Ca2+ concentration. A dihydropyridine Ca2+ channel antagonist does not inhibit the second plateau phase of the [Ca2+]i increase which is dependent on extracellular Ca2+. ET stimulates phospholipase C to produce inositol trisphosphate and 1,2-diacylglycerol vai a pertussis toxin-insensitive G protein. These results indicate that the receptor activation by ET is coupled to phospholipase C activation and Ca2+ channel gating in vascular smooth muscle cells.
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Affiliation(s)
- Y Takuwa
- Department of Internal Medicine, University of Tsukuba, Ibaraki, Japan
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21
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Masaki T, Hata S, Ide Y. Heterogeneity in soil water and light environments and dispersal limitation: what facilitates tree species coexistence in a temperate forest? Plant Biol (Stuttg) 2015; 17:449-458. [PMID: 25424149 DOI: 10.1111/plb.12253] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 08/31/2014] [Indexed: 06/04/2023]
Abstract
In the present study, we analysed the habitat association of tree species in an old-growth temperate forest across all life stages to test theories on the coexistence of tree species in forest communities. An inventory for trees was implemented at a 6-ha plot in Ogawa Forest Reserve for adults, juveniles, saplings and seedlings. Volumetric soil water content (SMC) and light levels were measured in 10-m grids. Relationships between the actual number of stems and environmental variables were determined for 35 major tree species, and the spatial correlations within and among species were analysed. The light level had no statistically significant effect on distribution of saplings and seedlings of any species. In contrast, most species had specific optimal values along the SMC gradient. The optimal values were almost identical in earlier life stages, but were more variable in later life stages among species. However, no effective niche partitioning among the species was apparent even at the adult stage. Furthermore, results of spatial analyses suggest that dispersal limitation was not sufficient to mitigate competition between species. This might result from well-scattered seed distribution via wind and bird dispersal, as well as conspecific density-dependent mortality of seeds and seedlings. Thus, both niche partitioning and dispersal limitation appeared less important for facilitating coexistence of species within this forest than expected in tropical forests. The tree species assembly in this temperate forest might be controlled through a neutral process at the spatial scale tested in this study.
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Affiliation(s)
- T Masaki
- Forestry and Forest Products Research Institute, Ibaraki, Japan
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22
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Hur MG, Masaki T, Yoon DH. Thermochromic properties of Sn, W co-doped VO2 nanostructured thin film deposited by pulsed laser deposition. J Nanosci Nanotechnol 2014; 14:8941-8945. [PMID: 25970986 DOI: 10.1166/jnn.2014.10054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Tin (Sn) and tungsten (W) co-doped vanadium dioxide (VO2) nanostructured thin films with 50-nm thickness were deposited by pulsed laser deposition (PLD) to reduce the transition temperature and improve the IR transmittance. The crystal structure of the nanostructured thin films and the presence of elements were evaluated by XRD and XPS analysis. The transition temperature (T(c)) of 1 at% Sn-1 at% W co-doped VO2 nanostructured thin film was decreased to about 22 degrees C (from 70.3 to 48.5 degrees C) compared with the undoped VO2 nanostructured thin film. The transmittance width in the IR range of the co-doped nanostructured thin film decreased from 37.5% to 27% compared with the undoped VO2 nanostructured thin film. Also, the width of hysteresis was narrowed by Sn doping.
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Kobara H, Mori H, Rafiq K, Fujihara S, Nishiyama N, Kato K, Oryu M, Tani J, Miyoshi H, Masaki T. Successful endoscopic treatment of Boerhaave syndrome using an over-the-scope clip. Endoscopy 2014; 46 Suppl 1 UCTN:E82-3. [PMID: 24676827 DOI: 10.1055/s-0032-1326454] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- H Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - H Mori
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - K Rafiq
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - S Fujihara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - N Nishiyama
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - K Kato
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - M Oryu
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - J Tani
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - H Miyoshi
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - T Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
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Fujihara S, Mori H, Kobara H, Nishiyama N, Kobayashi M, Masaki T. Esophageal natural killer (NK)/T cell lymphoma of true natural killer cell origin. Endoscopy 2014; 46 Suppl 1 UCTN:E77-8. [PMID: 24676825 DOI: 10.1055/s-0032-1309852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- S Fujihara
- Department of Gastroenterology and Neurology, Kagawa University, Faculty of Medicine, Kagawa, Japan
| | - H Mori
- Department of Gastroenterology and Neurology, Kagawa University, Faculty of Medicine, Kagawa, Japan
| | - H Kobara
- Department of Gastroenterology and Neurology, Kagawa University, Faculty of Medicine, Kagawa, Japan
| | - N Nishiyama
- Department of Gastroenterology and Neurology, Kagawa University, Faculty of Medicine, Kagawa, Japan
| | - M Kobayashi
- Department of Gastroenterology and Neurology, Kagawa University, Faculty of Medicine, Kagawa, Japan
| | - T Masaki
- Department of Gastroenterology and Neurology, Kagawa University, Faculty of Medicine, Kagawa, Japan
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Nishiyama N, Mori H, Rafiq K, Kobara H, Fujihara S, Kobayashi M, Masaki T. Over-the-scope clip system is effective for the closure of post-endoscopic submucosal dissection ulcer, especially at the greater curvature. Endoscopy 2014; 46 Suppl 1 UCTN:E130-1. [PMID: 24756257 DOI: 10.1055/s-0032-1325980] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- N Nishiyama
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Japan
| | - H Mori
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Japan
| | - K Rafiq
- Pharmacology, Faculty of Medicine, Kagawa University, Japan
| | - H Kobara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Japan
| | - S Fujihara
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Japan
| | - M Kobayashi
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Japan
| | - T Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Japan
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Katada C, Muto M, Tanabe S, Higuchi K, Sasaki T, Azuma M, Ishido K, Katada N, Sakuramoto S, Yamashita K, Masaki T, Nakayama M, Okamoto M, Koizumi W. Factors associated with the presence of multiple Lugol-voiding lesions in patients with esophageal squamous-cell carcinoma. Dis Esophagus 2014; 27:457-62. [PMID: 23009284 DOI: 10.1111/j.1442-2050.2012.01429.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Multicentric squamous dysplasia of the esophagus is characterized by multiple Lugol-voiding lesions (LVLs) on Lugol chromoendoscopy. Multiple LVLs are associated with a very high risk of multiple cancers arising in the esophagus as well as the head and neck. To gain insight into the pathogenesis of multiple LVLs of the esophageal mucosa, we studied risk factors for the development of such lesions in 76 patients who had a current or previous diagnosis of esophageal squamous cell carcinoma. All patients underwent Lugol chromoendoscopy of the esophageal mucosa. The history of tobacco and alcohol use was documented. Polymorphisms of the aldehyde dehydrogenase type 2 (ALDH2) gene were identified by polymerase chain reaction using sequence-specific primers. Clinical factors related to multiple LVLs were analyzed. All patients with multiple LVLs were drinkers. On univariate analysis, male sex (odds ratio [OR] 15, 95% confidence interval [CI] 1.84-122.45: P = 0.011), presence of the ALDH2-2 allele (OR 4.5, 95% CI 1.55-13.24: P = 0.006), and smoking index ≥1000 (OR 2.6, 95% CI 1.02-6.6: P = 0.045) were associated with multiple LVLs. On multivariate analysis, male sex (OR 10.02, 95% CI 1.13-88.44: P = 0.038) and presence of the ALDH2-2 allele (OR 4.56, 95% CI 1.4-14.82: P = 0.012) were associated with multiple LVLs. Among drinkers, a daily alcohol intake of ≥100 g pure ethanol with the ALDH2-2 allele (OR 17.5, 95% CI 1.97-155.59: P = 0.01) and a daily alcohol intake of <100 g pure ethanol with the ALDH2-2 allele (OR 8.85, 95% CI 1.68-46.69: P = 0.01) more strongly correlated with multiple LVLs than did a daily alcohol intake of <100 g pure ethanol without the ALDH2-2 allele, whereas a daily alcohol intake of ≥100 g pure ethanol without the ALDH2-2 allele (OR 4.0, 95% CI 0.54-29.81: P = 0.18) did not. In conclusion, male sex and the ALDH2-2 allele are associated with an increased risk for multiple LVLs of the esophageal mucosa in patients with esophageal squamous cell carcinoma. Among drinkers with the ALDH2-2 allele, the risk of multiple LVLs increased in parallel to the daily alcohol intake.
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Affiliation(s)
- C Katada
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
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Abstract
Z-Val-, Z-Pro-, Z-Leu-Leu-, and Z-Leu-Pro-lysinals and BZ-DL-lysinal were chemically synthesized and tested as novel inhibitors for Achromobacter protease I (API), a lysine-specific serine protease. Among the lysinal derivatives tested, Z-Val-lysinal was the most potent competitive inhibitor, its Ki being estimated as 6.5 nM in an esterolytic assay with Tos-Lys-OMe. In an amidolytic assay, Z-Leu-Leu-lysinal was the most potent inhibitor and the apparent mode of inhibition was non-competitive. The Kis of the other lysinal derivatives in both esterolytic and amidolytic assays were more than 10(3) times lower than that of leupeptin. Z-Val-lysinol, lacking the aldehyde group, was a poor competitive inhibitor. These results suggest that acyl-, acylaminoacyl-, and acylpeptidyllysinals function as a transition-state inhibitor for Achromobacter protease I.
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Affiliation(s)
- T Masaki
- Department of Agricultural Chemistry, Faculty of Agriculture, Ibaraki University, Japan
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Ohkubo H, Masaki T, Matsuhashi N, Kawahara H, Yokoyama T, Nakajima A, Ohkura Y. Histopathologic findings in patients with idiopathic megacolon: a comparison between dilated and non-dilated loops. Neurogastroenterol Motil 2014; 26:571-80. [PMID: 24387755 DOI: 10.1111/nmo.12303] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 12/11/2013] [Indexed: 12/14/2022]
Abstract
BACKGROUND Idiopathic megacolon (IMC) is an intractable motility disorder in which chronic symptoms of colonic dysmotility appear with no mechanical cause. Although a pathological analysis is essential to understand the mechanism of IMC, no study has compared the histopathologic findings between dilated and non-dilated loops in IMC cases, and little is known about the proportion of each disease subtype. METHODS Fifty-three full-thickness samples (dilated loops, n = 31; non-dilated loops, n = 22) from 31 IMC cases and 16 samples (dilated loops; n = 8, non-dilated loops; n = 8) from eight controls were collected. All the samples were stained with hematoxylin-eosin (HE), Hu C/D antibody, and CD117 antibody to assess degenerative myopathy, degenerative neuropathy, inflammatory neuropathy, hypoganglionosis, and mesenchymopathy according to the London Classification. Findings of the dilated and non-dilated loop samples were compared, and the proportions of each subtype were analyzed. KEY RESULTS Based on a control study, <60 ganglion cells/cm was defined as hypoganglionosis in our series. Myopathy was observed in 11 patients (35.5%), neuropathy was in 19 patients (61.3%), and mesenchymopathy was in 10 patients (32.2%). An overlap between subtypes was observed in some cases. Surprisingly, the non-dilated loop samples exhibited very similar histopathologic abnormalities to those observed in the dilated loop samples in most cases. CONCLUSIONS & INFERENCES Our study is the first to compare the histopathologic findings between dilated and non-dilated loops in IMC patients. Histopathologic abnormalities precede the clinical manifestation of IMC, and may consequently lead to gradual colonic dilatation; however, detailed mechanism including dilation triggering factor needs further elucidation.
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Affiliation(s)
- H Ohkubo
- Gastroenterology Division, Yokohama City University School of Medicine, Yokohama, Japan
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Kakinoki K, Okano K, Oshima M, Suto H, Kashiwagi H, Yamamoto N, Akamoto S, Fujiwara M, Yachida S, Takama T, Hagiike M, Usuki H, Kamata H, Masaki T, Suzuki Y. A novel triple secured technique for pancreatic reconstruction following pancreaticoduodenectomy for a soft pancreas. Hepatogastroenterology 2014; 61:469-474. [PMID: 24901164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND/AIMS Soft pancreases are susceptible to developing pancreatic fistula following pancreaticoduodenectomy. To reduce the incidence of pancreatic fistula after pancreaticoduodenectomy in patients with a soft pancreas, we developed a triple secured technique. In this study, we describe the details of this technique and also report on the postoperative outcomes. METHODOLOGY The triple secured technique employed an ultrasonic dissector for pancreatic transection with skeletonizing and ligating of the small pancreatic branch ducts, duct-invagination or duct-to-mucosa anastomosis for main pancreatic duct management, and, finally, four large stitches between the pancreatic stump parenchyma and the jejunal seromuscular layer to prevent minor pancreatic leakage. A total of 28 consecutive patients with a soft pancreas who underwent pancreaticoduodenectomy using our technique were included in this study. RESULTS Postopetrative complications occurred in 16 patients. Grade B pancreatic fistula developed in 6 patients. However, no grade C pancreatic fistula occurred in this series. Neither any reoperation nor in-hospital mortality was observed in this series. CONCLUSIONS Our triple secured technique after pancreaticoduodenectomy was feasible and safe, with an acceptable rate of grade B pancreatic fistula and no grade C pancreatic fistula for patients with a soft pancreas.
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Mori H, Kobara H, Rafiq K, Nishiyama N, Fujihara S, Kobayashi M, Oryu M, Fujiwara M, Suzuki Y, Masaki T. New flexible endoscopic full-thickness suturing device: a triple-arm-bar suturing system. Endoscopy 2013; 45:649-54. [PMID: 23881805 DOI: 10.1055/s-0033-1344156] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND STUDY AIM A reliable full-thickness suturing device is necessary for pure natural orifice transluminal endoscopic surgery (NOTES). The present study focused on assessing the reliability of a new suturing device. METHODS A total of 60 single sutures were tested to close 5-cm incisions in 8-cm square pieces of resected swine stomach. Each incision was sutured by an over-the-scope clip (OTSC; n = 20), a single hand-sewn stitch (n = 20), or a single triple-arm-bar suturing system (TBSS) stitch. The maximum pulling force durability (MPD) of each suture was tested. To assess the reliability of the TBSS for endoscopic full-thickness resection (EFTR), 60 EFTRs of 50 mm diameter were performed on excised swine stomachs. After EFTR, full-thickness sutures were made using 3-stitch OTSCs (n = 20), 10-stitch hand-sewn sutures (n = 20), or 10-stitch TBSS sutures (n = 20). Outcomes were the MPD test for both single stitch and multiple stitch applications and the suturing time for single-stitch sutures. RESULTS In the single-stitch MPD tests, there were significant differences between OTSCs and hand-sewn sutures (P = 0.0002) and between OTSCs and TBSS sutures (P = 0.0001), but no significant difference between hand-sewn and TBSS sutures. The multiple-stitch sutures revealed significant differences between OTSCs and hand-sewn sutures (P = 0.0039), and between OTSCs and TBSS sutures (P = 0.013). There was no significant difference between hand-sewn and TBSS sutures. There were significant differences in suture times between OTSC, hand-sewn sutures, and TBSS sutures (P < 0.05). CONCLUSIONS Both single-stitch and multiple-stitch sutures using TBSS have similar strength to hand-sewn sutures. TBSS is a reliable suturing device.
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Affiliation(s)
- H Mori
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa 761-0793, Japan.
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Fan YY, Kobori H, Nakano D, Hitomi H, Mori H, Masaki T, Sun YX, Zhi N, Zhang L, Huang W, Zhu B, Li P, Nishiyama A. Aberrant activation of the intrarenal renin-angiotensin system in the developing kidneys of type 2 diabetic rats. Horm Metab Res 2013; 45:338-43. [PMID: 23322513 PMCID: PMC3655199 DOI: 10.1055/s-0032-1331256] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
We have previously reported that intrarenal angiotensin II (Ang II) levels are increased long before diabetes becomes apparent in obese Otsuka-Long-Evans-Tokushima-Fatty (OLETF) rats, a model of type 2 diabetes. In this study, we examined the changes in intrarenal renin-angiotensin system (RAS) activity in the developing kidneys of OLETF rats. Ang II contents and mRNA levels of RAS components were measured in male OLETF and control Long-Evans Tokushima (LETO) rats at postnatal days (PND) 1, 5, and 15, and at 4-30 weeks of age. In both LETO and OLETF rats, kidney Ang II levels peaked at PND 1, then decreased during the pre- and post-weaning periods. However, Ang II levels and gene expression of RAS components, including angiotensinogen (AGT), renin, and angiotensin-converting enzyme (ACE), were not significantly different between LETO and OLETF rats. Intrarenal Ang IIcontents further decreased during puberty (from 7 to 11 weeks of age) in LETO rats, bur not in OLETF rats. At 11 weeks of age, kidney Ang II levels, urinary AGT excretion, and mRNA levels of AGT and renin were higher in OLETF rats than in LETO rats, while blood glucose levels were not significantly different between these groups of rats. These data indicate that continued intrarenal expression of Ang II during pubescence contributes to the increases in intrarenal Ang II levels in prediabetic OLETF rats, and is associated with increased intrarenal AGT and renin expression. Inappropriate activation of the intrarenal RAS in the prediabetic stage may facilitate the onset and development of diabetic nephropathy in later life.
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MESH Headings
- Albuminuria/complications
- Angiotensin II/metabolism
- Angiotensinogen/metabolism
- Animals
- Blood Glucose/metabolism
- Blood Pressure
- Body Weight
- Collagen/genetics
- Collagen/metabolism
- Connective Tissue Growth Factor/genetics
- Connective Tissue Growth Factor/metabolism
- Creatinine/urine
- Diabetes Mellitus, Experimental/blood
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/urine
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/urine
- Female
- Gene Expression Regulation
- Kidney/growth & development
- Kidney/metabolism
- Organ Size
- Peptidyl-Dipeptidase A/metabolism
- Rats
- Rats, Inbred OLETF
- Receptors, Angiotensin/metabolism
- Renin/metabolism
- Renin-Angiotensin System
- Time Factors
- Transforming Growth Factor beta/genetics
- Transforming Growth Factor beta/metabolism
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Affiliation(s)
- Y-Y Fan
- Department of Traditional Chinese Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing, PR China.
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Gotoh K, Masaki T, Chiba S, Ando H, Fujiwara K, Shimasaki T, Mitsutomi K, Katsuragi I, Kakuma T, Sakata T, Yoshimatsu H. Hypothalamic brain-derived neurotrophic factor regulates glucagon secretion mediated by pancreatic efferent nerves. J Neuroendocrinol 2013; 25:302-11. [PMID: 23157205 DOI: 10.1111/jne.12003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 10/18/2012] [Accepted: 11/10/2012] [Indexed: 01/10/2023]
Abstract
Understanding the molecular mechanism of the regulation of glucagon secretion is critical for treating the dysfunction of α cells observed in diabetes. Glucagon-like peptide (GLP)-1 analogues reduce plasma glucagon and are assumed to contribute to their action to lower blood glucose. It has previously been demonstrated that the central administration of brain-derived neurotrophic factor (BDNF) improves glucose metabolism by a mechanism independent of feeding behaviour in obese subjects. Using male rats, we examined whether BDNF influences glucagon secretion from α cells via the the central nervous system. We investigate whether: (i) the central infusion of BDNF stimulates glucagon and/or insulin secretion via the pancreatic efferent nerve from the hypothalamus; (ii) the intraportal infusion of GLP-1 regulates glucose metabolism via the central and peripheral nervous system; and (iii) BDNF receptor and/or BDNF-positive fibres are localised near α cells of islets. The portal glucagon level decreased with the central administration of BDNF (n = 6, in each; P < 0.05); in contrast, there was no significant change in portal insulin, peripheral glucagon and insulin levels with the same treatment. This reduction of glucagon secretion was abolished by pancreatic efferent denervation (n = 6, in each; P < 0.05). In an immunohistochemical study, pancreatic α cells were stained specifically with BDNF and tyrosine-related kinase B, a specific receptor for BDNF, and α cells were also co-localised with BDNF. Moreover, intraportal administration of GLP-1 decreased glucagon secretion, as well as blood glucose, whereas it increased the BDNF content in the pancreas; these effects were inhibited with the central infusion of BDNF antibody (n = 6, in each; P < 0.05). BDNF and GLP-1 affect glucose metabolism and modulate glucagon secretion from pancreatic α cells via the central and peripheral nervous systems.
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Affiliation(s)
- K Gotoh
- Department of Internal Medicine 1, Faculty of Medicine, Oita University, Yufu, Japan.
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Gotoh K, Inoue M, Masaki T, Chiba S, Shiraishi K, Shimasaki T, Matsuoka K, Ando H, Fujiwara K, Fukunaga N, Aoki K, Nawata T, Katsuragi I, Kakuma T, Seike M, Yoshimatsu H. Obesity-related chronic kidney disease is associated with spleen-derived IL-10. Nephrol Dial Transplant 2012; 28:1120-30. [DOI: 10.1093/ndt/gfs440] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Kobara H, Mori H, Fujiwara S, Nishiyama N, Kobayashi M, Masaki T. Bloc biopsy by tunneling method using endoscopic submucosal dissection for an upper gastrointestinal submucosal tumor. Endoscopy 2012; 44 Suppl 2 UCTN:E197-8. [PMID: 22622742 DOI: 10.1055/s-0031-1291821] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- H Kobara
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan.
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Affiliation(s)
- H Kobara
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Japan.
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Hagiwara H, Shan H, Masaki T, Ikeda M, Shimizu T, Matsumura K, Saito F. T.P.41 The role of the transcriptional factor Pax3 on myogenesis and the effect on the expression of myogenic regulatory factors. Neuromuscul Disord 2012. [DOI: 10.1016/j.nmd.2012.06.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Saito F, Hagiwara H, Ikeda M, Masaki T, Shimizu T, Matsumura K. G.P.7 Effects of overexpression of LARGE on a mouse model of congenital muscular dystrophy. Neuromuscul Disord 2012. [DOI: 10.1016/j.nmd.2012.06.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Mori H, Rafiq K, Kobara H, Fujihara S, Nishiyama N, Kobayashi M, Himoto T, Haba R, Hagiike M, Izuishi K, Okano K, Suzuki Y, Masaki T. Local steroid injection into the artificial ulcer created by endoscopic submucosal dissection for gastric cancer: prevention of gastric deformity. Endoscopy 2012; 44:641-8. [PMID: 22696191 DOI: 10.1055/s-0032-1309815] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND AND STUDY AIMS Endoscopic submucosal dissection (ESD) of large gastric lesions results in an extensive artificial ulcer that can lead to marked gastric deformity. The aim of the current study was to evaluate therapeutic efficacy in the prevention of gastric deformity of local triamcinolone acetonide (TCA) injection into the extensive artificial ulcer following ESD. PATIENTS AND METHODS A total of 45 patients who were diagnosed with early gastric cancer were enrolled. Patients were randomly assigned by the sealed-envelope randomization method to either local TCA injections (n = 21) or sham-control (n = 20) groups. Two clips were placed at the two maximum outer edges of the artificial ulcer after the lesion had been resected (Day 0). Local TCA injections were performed on postoperative Day 5 and Day 12. The distance between the two clips was measured by endoscopic measuring forceps on Days 5, 12, 30, and 60. Granulation formation and gastric deformity were evaluated by visual analog scale (VAS) on Days 30 and 60. RESULTS Local TCA injection did not alter clip-to-clip distance on postoperative Day 60, and formation of flat granulation tissue over the ulcer was followed by regenerative mucosa without any gastric deformity. The sham-control group showed significant shortening of clip-to-clip distance compared with the local steroid-injected group and protruded forms of granulation tissue with mucosal convergence. Histological evaluation revealed prominent growth of neovessels, swelling, and marked increases in endothelial cells in the local steroid-injected group compared with the sham-control group. CONCLUSIONS Local steroid injection into the floor of a post-ESD artificial ulcer promotes the formation of granulation tissue at an early stage of the healing process leading to regeneration of gastric mucosa without mucosal convergence or gastric deformity.
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Affiliation(s)
- H Mori
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan.
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Uchida E, Anan F, Masaki T, Kaneda K, Nawata T, Eshima N, Saikawa T, Yoshimatsu H. Monocyte chemoattractant protein-1 is associated with silent cerebral infarction in patients on haemodialysis. Intern Med J 2012; 42:29-34. [PMID: 21627744 DOI: 10.1111/j.1445-5994.2011.02538.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND In patients with chronic renal failure undergoing haemodialysis (HD), silent cerebral infarctions (SCI) are associated with high mortality. Levels of monocyte chemoattractant protein-1 (MCP-1) increase with renal dysfunction and may be a novel predictor for cerebrovascular events. We tested the hypothesis that increased MCP-1 concentration correlate with the occurrence of SCI in HD patients. METHODS Using cranial magnetic resonance imaging (MRI) findings, 52 Japanese patients undergoing HD were divided into two groups: with SCI (61 ± 7 years, mean ± SD, n= 28) and without SCI (60 ± 6 years, n= 24). The gender, metabolic profiles and MCP-1 concentration were compared between the two groups. RESULTS The level of MCP-1 was higher in the with-SCI group than in the without-SCI group (P < 0.0001). The proportion of smokers was higher in the with-SCI group (P < 0.05) than in the without-SCI group. Plasma level of high-density lipoprotein cholesterol was lower, while uric acid level was higher, in the with-SCI group (P < 0.05 and P < 0.05 respectively) compared to the without-SCI group. Multiple logistic regression analysis identified MCP-1 level as being significantly associated with the presence of SCI (odds ratio 1.48, 95% confidence interval = 1.10-5.75, P < 0.0001). CONCLUSIONS This study indicates that patients with chronic renal failure who are maintained on HD exhibit an increased prevalence of SCI, and that MCP-1 is significantly associated with the presence of SCI in HD patients.
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Affiliation(s)
- E Uchida
- Department of Nephrology, Tsukumi Central Hospital, Oita, Japan
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Luo Y, Jo D, Senthil K, Tezuka S, Kakihana M, Toda K, Masaki T, Yoon D. Synthesis of high efficient Ca2SiO4:Eu2+ green emitting phosphor by a liquid phase precursor method. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2011.11.046] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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41
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Yoshikawa T, Masaki T, Isagi Y, Kikuzawa K. Interspecific and annual variation in pre-dispersal seed predation by a granivorous bird in two East Asian hackberries, Celtis biondii and Celtis sinensis. Plant Biol (Stuttg) 2012; 14:506-514. [PMID: 22136589 DOI: 10.1111/j.1438-8677.2011.00528.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Pre-dispersal seed predation by granivorous birds has potential to limit fruit removal and subsequent seed dispersal by legitimate avian seed dispersers in bird-dispersed plants, especially when the birds form flocks. We monitored pre-dispersal seed predation by the Japanese grosbeak, Eophona personata, of two bird-dispersed hackberry species (Cannabaceae), Celtis biondii (four trees) and Celtis sinensis (10 trees), for 3 years (2005, 2007 and 2008) in a fragmented forest in temperate Japan. Throughout the 3 years, predation was more intense on C. biondii, which, as a consequence, lost a larger part of its fruit crop. Grosbeaks preferred C. biondii seeds that had a comparatively lower energy content and lower hardness than C. sinensis, suggesting an association between seed hardness and selective foraging by grosbeaks. In C. biondii, intensive predation markedly reduced fruit duration and strongly limited fruit removal by seed dispersers, especially in 2007 and 2008. In C. sinensis, seed dispersers consumed fruits throughout the fruiting seasons in all 3 years. In C. biondii, variation in the timing of grosbeak migration among years was associated with annual variation in this bird's effects on fruit removal. Our results demonstrate that seed predation by flocks of granivorous birds can dramatically disrupt seed dispersal in fleshy-fruited plants and suggest the importance of understanding their flocking behaviour.
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Affiliation(s)
- T Yoshikawa
- Forest Biology Laboratory, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto City, Japan.
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Donadio C, Kanaki A, Martin-Gomez A, Garcia S, Palacios-Gomez M, Donadio C, Calia D, Colombini E, DI Francesco F, Ghimenti S, Kanaki A, Onor M, Tognotti D, Fuoco R, Marka-Castro E, Torres Zamora MI, Giron-Mino J, Jaime-Solis MA, Arteaga LM, Romero H, Marka-Castro E, Akonur A, Leypoldt K, Asola M, Culleton B, Eloot S, Glorieux G, Nathalie N, Vanholder R, Perez de Jose A, Verdalles Guzman U, Abad Esttebanez S, Vega Martinez A, Barraca D, Yuste C, Bucalo L, Rincon A, Lopez-Gomez JM, Bataille P, Celine P, Raymond A, Francois G, Herve L, Michel D, Jean Louis R, Zhu F, Kotanko P, Thijssen S, Levin NW, Papamichail N, Bougiakli M, Gouva C, Antoniou S, Gianitsi S, Vlachopanou A, Chachalos S, Naka K, Kaarsavvidou D, Katopodis K, Michalis L, Sasaki K, Yasuda K, Yamato M, Surace A, Rovatti P, Steckiph D, Bandini R, Severi S, Dellacasa Bellingegni A, Santoro A, Arias M, Arias M, Sentis A, Perez N, Fontsere N, Vera M, Rodriguez N, Arcal C, Ortega N, Uriza F, Cases A, Maduell F, Abbas SR, Abbas SR, Zhu F, Kotanko P, Levin NW, Georgianos P, Sarafidis P, Nikolaidis P, Lasaridis A, Ahmed A, Ahmed A, Kaoutar H, Mohammed B, Zouhir O, Balter P, Ginsberg N, Taylor P, Sullivan T, Usvyat LA, Levin NW, Kotanko P, Zabetakis P, Moissl U, Ferrario M, Garzotto F, Wabel P, Cruz D, Tetta C, Signorini MG, Cerutti S, Brendolan A, Ronco C, Heaf J, Axelsen M, Pedersen RS, Ahmed A, Ahmed A, Amine H, Oualim Z, Ammirati AL, Guimaraes de Souza NK, Nemoto Matsui T, Luiz Vieira M, Alves de Oliveira WA, Fischer CH, Dias Carneiro F, Iizuka IJ, Aparecida de Souza M, Mallet AC, Cruz Andreoli MC, Cardoso Dos Santos BF, Rosales L, Dou Y, Carter M, Thijssen S, Kotanko P, Testa A, Sottini L, Giacon B, Prati E, Loschiavo C, Brognoli M, Marseglia C, Tommasi A, Sereni L, Palladino G, Bove S, Bosticardo G, Schillaci E, Detoma P, Bergia R, Park JW, Moon SJ, Choi HY, Ha SK, Park HC, Liao Y, Zhang L, Fu P, Igarashi H, Suzuki N, Esashi S, Masakane I, Panichi V, De Ferrari G, Saffiotti S, Sidoti A, Biagioli M, Bianchi S, Imperiali P, Gabrielli C, Conti P, Patrone P, Rombola G, Falqui V, Mura C, Icardi A, Rosati A, Santori F, Mannarino A, Bertucci A, Steckiph D, Jeong J, Jeong J, Kim OK, Kim NH, Bots M, Den Hoedt C, Grooteman MP, Van der Weerd NC, Mazairac AHA, Levesque R, Ter Wee PM, Nube MJ, Blankestijn P, Van den Dorpel MA, Park Y, Jeon J, Tessitore N, Tessitore N, Bedogna V, Girelli D, Corazza L, Jacky P, Guillaume Q, Julien B, Marcinkowski W, Drozdz M, Milkowski A, Rydzynska T, Prystacki T, August R, Benedyk-Lorens E, Bladek K, Cina J, Janiszewska G, Kaczmarek A, Lewinska T, Mendel M, Paszkot M, Trafidlo E, Trzciniecka-Kloczkowska M, Vasilevsky A, Konoplev G, Lopatenko O, Komashnya A, Visnevsky K, Gerasimchuk R, Neivelt I, Frorip A, Vostry M, Racek J, Rajdl D, Eiselt J, Malanova L, Pechter U, Selart A, Ots-Rosenberg M, Krieter DH, Seidel S, Merget K, Lemke HD, Wanner C, Krieter DH, Canaud B, Lemke HD, Rodriguez A, Morgenroth A, Von Appen K, Dragoun GP, Wanner C, Fluck R, Fouque D, Lockridge R, Motomiya Y, Uji Y, Hiramatsu T, Ando Y, Furuta M, Furuta M, Kuragano T, Kida A, Yahiro M, Otaki Y, Hasuike Y, Nonoguchi H, Nakanishi T, Sain M, Sain M, Kovacic V, Ljutic D, Radic J, Jelicic I, Yalin SF, Yalin SF, Trabulus S, Yalin AS, Altiparmak MR, Serdengecti K, Ohtsuka A, Fukami K, Ishikawa K, Ando R, Kaida Y, Adachi T, Sugi K, Okuda S, Nesterova OB, Nesterova OB, Suglobova ED, Golubev RV, Vasiliev AN, Lazeba VA, Smirnov AV, Arita K, Kihara E, Maeda K, Oda H, Doi S, Masaki T, Hidaka S, Ishioka K, Oka M, Moriya H, Ohtake T, Nomura S, Kobayashi S, Wagner S, Gmerek A, Wagner J, Wizemann V, Eftimovska - Otovic N, Spaseska-Gjurovska K, Bogdanovska S, Babalj - Banskolieva E, Milovanceva M, Grozdanovski R, Pisani A, Riccio E, Mancini A, Ambuhl P, Astrid S, Ivana P, Martin H, Thomas K, Hans-Rudolf R, Daniel A, Denes K, Marco M, Wuthrich RP, Andreas S, Andrulli S, Altieri P, Sau G, Bolasco P, Pedrini LA, Basile C, David S, Feriani M, Nebiolo PE, Ferrara R, Casu D, Logias F, Tarchini R, Cadinu F, Passaghe M, Fundoni G, Villa G, DI Iorio BR, Zoccali C, Locatelli F, Kihara E, Arita K, Hamamoto M, Maeda K, Oda H, Doi S, Masaki T, Lee DY, Kim B, Moon KH, LI Z, Fu P, Ahrenholz P, Ahrenholz P, Winkler RE, Waitz G, Wolf H, Grundstrom G, Alquist M, Holmquist M, Christensson A, Bjork P, Abdgawad M, Ekholm L, Segelmark M, Corsi C, Santoro A, De Bie J, Mambelli E, Mortara D, Santoro A, Severi S, Arroyo D, Arroyo D, Panizo N, Quiroga B, Reque J, Melero R, Rodriguez-Ferrero M, Rodriguez-Benitez P, Anaya F, Luno J, Ragon A, James A, Brunet P, Ribeiro S, Faria MS, Rocha S, Rodrigues S, Catarino C, Reis F, Nascimento H, Fernandes J, Miranda V, Quintanilha A, Belo L, Costa E, Santos-Silva A, Arund J, Tanner R, Fridolin I, Luman M, Clajus C, Clajus C, Kielstein JT, Haller H, David S, Basile C, Basile C, Libutti P, Lisi P, Vernaglione L, Casucci F, Losurdo N, Teutonico A, Lomonte C, Krisp C, Gmerek A, Wagner J, Wolters DA, Pedrini LA, Matsuyama M, Tomo T, Ishida K, Matsuyama K, Nakata T, Kadota J, Caiazzo M, Monari E, Cuoghi A, Bellei E, Bergamini S, Palladino G, Tomasi A, Baranger T, Seniuta P, Berge F, Drouillat V, Frangie C, Rosier E, Labonia W, Lescano A, Rubio D, Von der Lippe N, Jorgensen JA, Osthus TB, Waldum B, Os I, Bossola M, DI Stasio E, Antocicco M, Tazza L, Griveas I, Karameris A, Pasadakis P, Savica V, Santoro D, Saitta S, Tigano V, Bellinghieri G, Gangemi S, Daniela R, Checherita IA, Ciocalteu A, Vacaroiu IA, Niculae A, Bladek K, Stefaniak E, Pietrzak I, Krupa D, Garred L, Santoro A, Mancini E, Corrazza L, Atti M, Afsar B, Stamopoulos D, Mpakirtzi N, Gogola B, Zeibekis M, Stivarou D, Panagiotou M, Grapsa E, Vega Vega O, Barraca Nunez D, Abad Esttebanez S, Bucalo L, Yuste C, Lopez-Gomez JM, Fernandez-Lucas M, Gomis A, Teruel JL, Elias S, Quereda C, Hignell L, Humphrey S, Pacy N, Stamopoulos D, Mpakirtzi N, Afentakis N, Grapsa E. Extracorporeal dialysis: techniques and adequacy. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abe N, Takeuchi H, Shibuya M, Ohki A, Yanagida O, Masaki T, Mori T, Sugiyama M. Successful treatment of duodenal carcinoid tumor by laparoscopy-assisted endoscopic full-thickness resection with lymphadenectomy. Asian J Endosc Surg 2012; 5:81-5. [PMID: 22776369 DOI: 10.1111/j.1758-5910.2011.00120.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Reports on endoscopic full-thickness resection of the duodenum using the endoscopic submucosal dissection technique are rare. Here we present a case of a duodenal bulb carcinoid tumor successfully treated by laparoscopy-assisted endoscopic full-thickness resection (LAEFR). An asymptomatic 65-year-old woman had a 10-mm, submucosal tumor on the anterior wall of the duodenal bulb. Abdominal CT revealed an enlarged lymph node adjacent to the duodenum and pancreas. Although we informed the patient of the need for pancreatoduodenectomy with a lymphadenectomy, the patient expressly requested LAEFR. After negative nodal metastasis was confirmed by an intraoperative frozen section of the enlarged nodes, LAEFR was performed using the endoscopic submucosal dissection technique under the laparoscopic assistance. The duodenal wall defect was closed by laparoscopy with an Albert anastomosis. The entire circumferential margin of the specimen was histopathologically negative for carcinoid tumor cells. In summary, LAEFR enables en bloc and whole-layer excision of nonperiampullary duodenal lesions with a sufficient surgical margin, both vertically and laterally. LAEFR is a minimally invasive and effective treatment for selected patients with duodenal carcinoid tumor.
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Affiliation(s)
- N Abe
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan.
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Okada JT, Sit PHL, Watanabe Y, Wang YJ, Barbiellini B, Ishikawa T, Itou M, Sakurai Y, Bansil A, Ishikawa R, Hamaishi M, Masaki T, Paradis PF, Kimura K, Ishikawa T, Nanao S. Persistence of covalent bonding in liquid silicon probed by inelastic x-ray scattering. Phys Rev Lett 2012; 108:067402. [PMID: 22401121 DOI: 10.1103/physrevlett.108.067402] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 06/28/2011] [Indexed: 05/31/2023]
Abstract
Metallic liquid silicon at 1787 K is investigated using x-ray Compton scattering. An excellent agreement is found between the measurements and the corresponding Car-Parrinello molecular dynamics simulations. Our results show persistence of covalent bonding in liquid silicon and provide support for the occurrence of theoretically predicted liquid-liquid phase transition in supercooled liquid states. The population of covalent bond pairs in liquid silicon is estimated to be 17% via a maximally localized Wannier function analysis. Compton scattering is shown to be a sensitive probe of bonding effects in the liquid state.
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Affiliation(s)
- J T Okada
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Tsukuba, Ibaraki, Japan
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Guo P, Wu C, Masaki T, Mori H, Nishiyama A. Subdose of fasudil suppresses myocardial fibrosis in aldosterone-salt-treated uninephrectomized rats. Pharmazie 2011; 66:716-719. [PMID: 22026130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Rho/Rho kinase (ROCK) pathway plays an important role in pathological cardiovascular conditions. In the present study, the effect of a subdose of fasudil, a selective ROCK inhibitor, on systemic hypertension and myocardium fibrosis induced by aldosterone was investigated in uninephrectomized Sprague-Dawley rats (SD). Treatment with a fasudil (10 mg/kg x day, s.c.) for 5 weeks decreased the activity of ROCK activity for more than 53% as determined by the expression of phosphorylated Myosin phosphatase target subunit 1 (MYPT1). Although this dose of fasudil did not signifantly prevent hypertension, it remarkably alleviated myocardium hypertrophy and fibrosis. The elevated transcriptional expression of transforming growth factors beta1 (TGF-beta1), atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP) and collagen I and III was also decreased. These results demonstrated that fasudil can protect the myocardium from injury by aldosterone at a subhypertensive dose.
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Affiliation(s)
- Peng Guo
- Pharmacology and Toxicology Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China.
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Mori H, Kobara H, Kobayashi M, Muramatsu A, Nomura T, Hagiike M, Izuishi K, Suzuki Y, Masaki T. Establishment of pure NOTES procedure using a conventional flexible endoscope: review of six cases of gastric gastrointestinal stromal tumors. Endoscopy 2011; 43:631-4. [PMID: 21611948 DOI: 10.1055/s-0030-1256227] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An increasing number of reports have recently been published on hybrid natural orifice transluminal endoscopic surgery (NOTES). These reports do not address how to complete an operation with a flexible endoscope alone (pure NOTES), but rather how to combine use of an endoscope and a laparoscope. Surgical procedures using flexible and rigid endoscopes have been developed using different processes and concepts. Recognizing this conceptual difference, we conducted a study to address how to establish a pure NOTES procedure. Six patients with gastric gastrointestinal stromal tumors (GISTs) underwent hybrid NOTES. Each case was retrospectively reviewed to determine the appropriateness of the treatment and the usefulness of the endoscopic submucosal dissection (ESD) method, double-scope method, spaced perforation method, duodenal balloon occlusion method, and loop clip technique. The development of operative procedures that take advantage of the characteristics of flexible endoscopes, even with conventional flexible endoscopic devices and conventional endoscopes alone, may contribute to the realization of pure NOTES.
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Affiliation(s)
- H Mori
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan.
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Mori H, Kobara H, Kobayashi M, Muramatsu A, Nomura T, Yachida T, Izuishi K, Suzuki Y, Gong J, Masaki T. Rectal perforation from cholesterol embolization syndrome. Endoscopy 2011; 42 Suppl 2:E352-3. [PMID: 21170845 DOI: 10.1055/s-0030-1255979] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- H Mori
- Department of Gastroenterology and Neurology, Kagawa Medical University School of Medicine, Kagawa, Japan.
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Masaki T, Yoshimatsu H. Neuronal histamine and its receptors: implication of the pharmacological treatment of obesity. Curr Med Chem 2011; 17:4587-92. [PMID: 21062248 DOI: 10.2174/092986710794182944] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Accepted: 10/19/2010] [Indexed: 11/22/2022]
Abstract
Obesity is the effect of imbalance between energy intake and expenditure and forms a fundamental basis of the metabolic syndrome. A number of substances implicated in the regulation of energy metabolism represent opportunities for anti-obesity drug development. Neuronal histamine and its receptors have been shown to regulate energy metabolism and are considered as anti-obesity targets. Several histamine receptor subtypes have been identified; of these, histamine H1 and H3 receptors (H1-R and H3-R) have been specifically recognized as mediators of energy intake and expenditure. In addition, several histamine drugs related to H1-R and H3-R, have been shown to attenuate body weight gain both in rodent and human. These results provide the reagents for histamine receptors biology and may find applications in the treatment of obesity and related metabolic disorders. In this review, the development of agonists and antagonists of histamine receptors are provided.
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Affiliation(s)
- T Masaki
- Department of Internal Medicine 1, Faculty of Medicine, Oita University, 1-1 Idaigaoka,Yufu-Hasama, Oita, 879-5593, Japan.
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Abstract
ABSTRACTTetragonal to rhombohedral phase transformation was studied by X-ray diffraction technique on the ground surfaces of tetragonal zirconia polycrystals (Y-TZP) and partially stabilized zirconia (Y-PSZ) with 2.0 to 5.0 mol% Y2 O3 contents prepared by hot isostatic pressing. The rhombohedral phase increased with increase of Y2 O3 content from 2.0 to 5.0 mol%, and also with the increase of HIPing temperature from 1400 to 1600°C. The stability of the phase was also studied with regard to the surface finish and annealing. The subsequent heat treatment of the samples was found to promote the reverse rhombohedral to tetragonal transformation.
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Katagiri G, Ishida H, Ishitani A, Masaki T. The Stress Induced Transformation by Fracture in Y2 O3 Containing Tetragonal Zirconia Polycrystals. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-78-43] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTThe stress induced transformation in Y2 O3 containing tetra gonal zirconia polycrystals (Y-TZP) by a three-point bending test was studied by Raman microprobe. Transformation zone extends to as large as 100μm in the starting side of the fracture and the transformation zone size becomes smaller in the direction from the starting to the ending side of the fracture. The transformation zone size has no correlation with fracture toughness and Y2O3 content. It is suggested that the transformation plastici y may operate in the initial stage of the fracture. The obtained results have remarkable contrast with the case of the fracture of a pre-indented specimen. The transformation behavior of defect-dominating fracture is also discussed.
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