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Liver cirrhosis in Japan:Future global trends in the era of progressive antiviral therapy

Portal Hypertension & Cirrhosis 2022年第3期1卷 178-183页

作者： Hirayuki Enomoto Tomoyuki Takashima Takashi Nishimura nobuhiro aizawa Naoto Ikeda Yukihisa Yuri Mamiko Okamoto Kohei Yoshihara Ryota Yoshioka Shoki Kawata Shogo Ota Ryota Nakano Hideyuki Shiomi Hiroko Iijima Department of Internal Medicine Division of Hepatobiliary and Pancreatic DiseaseHyogo Medical UniversityHyogoJapan

In Japan,viral hepatitis is the main cause of chronic liver diseases,including liver cirrhosis.Due to the availability of highly effective antiviral drugs in combination with antihepatitis measures,Japan has become one of the most successful countries in the world with regard to hepatitis virus elimination.In Japan,there are many elderly patients who have been infected with hepatitis C virus for a long time,and antihepatitis measures have been in place since the 2000s.Thus,the medical situation in Japan is expected to reflect the future situation in other countries where hepatitis countermeasures have been recently initiated and the infected population is aging.Our nationwide survey clarified the changes in the etiologies of liver cirrhosis in Japan.Although viral hepatitis remains a major cause of liver cirrhosis in Japan,nonviral cirrhosis is suggested to increasingly contribute to the etiologies of liver cirrhosis,as opposed to viral hepatitis‐related liver cirrhosis.The changing etiology of liver cirrhosis in Japan may help to predict future global trends in chronic liver diseases.

关键词： antihepatitis measures antiviral drugs etiology liver cirrhosis viral hepatitis

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Elevation of the glycated albumin to glycated hemoglobin ratio during the progression of hepatitis C virus related liver fibrosis

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World Journal of Hepatology 2012年第1期4卷 11-17页

作者： nobuhiro aizawa Hirayuki Enomoto Hiroyasu Imanishi Masaki Saito Yoshinori Iwata Hironori Tanaka Naoto Ikeda Yoshiyuki Sakai Tomoyuki Takashima Takashi Iwai Ei-ichiro Moriwaki Soji Shimomura Hiroko Iijima Hideji Nakamura Shuhei Nishiguchi Division of Hepatobiliary and Pancreatic Disease Department of Internal Medicine Hyogo College of Medicine Department of Gasteroenterology Nissay Hospital

AIM: To analyze the relationship between the glycated albumin (GA) to glycated hemoglobin (HbA1c) ratio and the histological grading of liver fibrosis.METHODS: The study retrospectively included consecutive hepatitis C virus positive chronic liver disease patients (n = 142) who had undergone percutaneous liver biopsy between January 2008 and March 2010 at our institution. The ratios of GA/HbA1c were calculated in all patients to investigate the relationship with the degree of the liver fibrosis. The values of the aspartate aminotransferase-to-platelet ratio index (APRI), an excellent marker for the evaluation of liver fibrosis, were also calculated. In addition, we combined the ratio of GA/HbA1c and the APRI in order to improve our ability to detect the presence of significant liver fibrosis. RESULTS: Sixty-one (43%) patients had either no fibrosis or minimal fibrosis (METAVIR score: F0-F1), while 25 (17%) had intermediate fibrosis (F2). Fifty-six (39%) patients had severe fibrosis (F3-F4) and 27 of them had cirrhosis (F4). The mean values of the GA/HbA1c increased with the progression of the fibrosis (F0-1: 2.83 ± 0.24, F2: 2.85 ± 0.24, F3: 2.92 ± 0.35, F4: 3.14 ± 0.54). There was a significant dif- ference between the F0-F1 vs F4, F2 vs F4, and F3 vs F4 groups (P 3.0) was as follows: its sensitivity and specificity for the detection of liver cirr

关键词： Glycated albumin Glycated hemoglobin Liver fibrosis Liver biopsy Hepatitis C virus

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Development of risky varices in alcoholic cirrhosis with a well-maintained nutritional status

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World Journal of Hepatology 2015年第21期7卷 2358-2362页

作者： Hirayuki Enomoto Yoshiyuki Sakai Yoshinori Iwata Ryo Takata nobuhiro aizawa Naoto Ikeda Kunihiro Hasegawa Chikage Nakano Takashi Nishimura Kazunori Yoh Akio Ishii Tomoyuki Takashima Hiroki Nishikawa Hiroko Iijima Shuhei Nishiguchi Division of Hepatobiliary and Pancreatic Disease Department of Internal Medicine Hyogo College of Medicine

AIM: To compare the nutritional status between alcoholic compensated cirrhotic patients and hepatitis C virus(HCV)-related cirrhotic patients with portal hypertension.METHODS: A total of 21 patients with compensated cirrhosis(14 with HCV-related cirrhosis and seven with alcoholic cirrhosis) who had risky esophageal varices were investigated. In addition to physical variables, including the body mass index, triceps skinfold thickness, and arm-muscle circumference, the nutritional status was also assessed using the levels of pre-albumin(pre-ALB), retinol-binding protein(RBP) and non-protein respiratory quotient(NPRQ) measured with an indirect calorimeter.RESULTS: A general assessment for the nutritional status with physical examinations did not show a significant difference between HCV-related cirrhosis and alcoholic cirrhosis. However, the levels of pre-ALB and RBP in alcoholic compensated cirrhotic patients were significantly higher than those in HCV-related compensated cirrhotic patients. In addition, the frequency of having a normal nutritional status(NPRQ ≥ 0.85 and ALB value > 3.5 g/d L) in alcoholic compensated cirrhotic patients was significantly higher than that in HCV-related compensated cirrhotic patients.CONCLUSION: According to our small scale study, alcoholic compensated cirrhotic patients can develop severe portal hypertension even with a relatively well-maintained liver function and nutritional status compared with HCV-related cirrhosis.

关键词： Alcoholic liver cirrhosis Hepatitis C virus Rapid-

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In-situ observation of twinning and detwinning in AZ31 alloy

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Journal of Magnesium and Alloys 2022年第12期10卷 3418-3432页

作者： Wu Gong Ruixiao Zheng Stefanus Harjo Takuro Kawasaki Kazuya aizawa nobuhiro Tsuji J-PARC Center Japan Atomic Energy Agency2-4 Shirane ShirakataTokaiNakaIbaraki 319-1195Japan Center for Elements Strategy Initiative for Structural Materials Kyoto UniversityYoshidahonmachiSakyo-kuKyoto 606-8501Japan Department of Materials Science and Engineering Kyoto UniversityYoshida-honmachiSakyo-kuKyoto 606-8501Japan School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Twinning and detwinning behavior of a commercial AZ31 magnesium alloy during cyclic compression–tension deformation with a total strain amplitude of 4%(±2%) was evaluated using the complementary techniques of in-situ neutron diffraction, identical area electron backscatter diffraction, and transmission electron microscopy. In-situ neutron diffraction demonstrates that the compressive deformation was dominated by twin nucleation, twin growth, and basal slip, while detwinning dominated the unloading of compressive stresses and subsequent tension stage. With increasing number of cycles from one to eight: the volume fraction of twins at-2% strain gradually increased from 26.3% to 43.5%;the residual twins were present after 2% tension stage and their volume fraction increased from zero to 3.7% as well as a significant increase in their number;and the twinning spread from coarse grains to fine grains involving more grains for twinning. The increase in volume fraction and number of residual twins led to a transition from twin nucleation to twin growth, resulting in a decrease in yield strength of compression deformation with increasing cycles. A large number of-component dislocations observed in twins and the detwinned regions were attributed to the dislocation transmutation during the twinning and detwinning. The accumulation of barriers including twin boundaries and various types of dislocations enhanced the interactions of migrating twin boundary with these barriers during twinning and detwinning, which is considered to be the origin for increasing the work hardening rate in cyclic deformation of the AZ31 alloy.

关键词： Magnesium Neutron diffraction Twinning Detwinning Dislocation transmutation

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