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Novel insights into the reproductive strategies of wild Chinese sturgeon(Acipenser sinensis)populations based on the kinship analysis

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Water Biology and Security 2023年第2期2卷 63-72页

作者： Dan Yu Xin Gao Zhongyuan Shen masami Fujiwara Ping Yang Tao Chang Futie Zhang Xinghua Wu Zhonghua Duan Huanzhang Liu The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences Institute of HydrobiologyChinese Academy of SciencesWuhan430072China Department of Ecology and Conservation Biology Texas A&M UniversityCollege StationTX77843-2258USA Research Center for Yangtze River Ecological and Environmental Engineering China Three Gorges CorporationBeijing100038China

Understanding the reproductive strategy of an organism is important in conservation ecology as it directly affects the population performance under changing environmental *** sturgeon(Acipenser sinensis)are the largest anadromous fish in the Yangtze River,***,the species has only one spawning ground and has failed to spawn in recent years,leading it to the brink of *** develop effective conservation measures,a further understanding of its reproductive strategy is *** our study,we conducted kinship analyses by using mitochondrial and microsatellite DNA data from 216 wild juveniles collected over nine years(20062013,2015)to understand the mating system,breeding interval,effective number of breeding adults,and reproductive *** results from these analyses suggested polygynandry,with some parents contributing up to eight half-sibling juvenile *** the spawning ground was restricted to a limited area,genetic diversity was maintained at a relatively high level(observed heterozygosity from 0.698 to 0.787 and expected heterozygosity from 0.763 to 0.787)and inbreeding coefficients in each year-class ranged from1% to 9%(low to modest detrimental effects on offspring).A parental inference analysis revealed that Chinese sturgeon have a breeding interval of 2-6 years,indicating that it has the potential to feed,accumulate nutrition in the ocean,and then migrate back to the Yangtze River for iteroparous *** annual effective number of breeders in the Yangtze River ranged from 14 to 161 during the study period,and it decreased by 62.1%from the 20112014 *** sharp population decline likely contributes to the reproduction ***,the ratios of effective to census population size(Ne/Nc)were all larger than 0.20 after the 2010 year-class,indicating relatively even reproductive *** on these results,a suggested approach to protect this species is to restock parent fish to increa

关键词： Breeding interval Genetic mating systems Population size Reproductive success Sweepstakes reproductive success

Direct-acting antivirals for hepatitis C virus-infected patients with hepatocellular carcinoma

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World Journal of Hepatology 2022年第6期14卷 1190-1199页

作者： Kazuto Tajiri Hiroyuki Ito Kengo Kawai Yoshiro Kashii Yuka Hayashi Aiko Murayama masami Minemura Terumi Takahara Yukihiro Shimizu Ichiro Yasuda Department of Gastroenterology Toyama University HospitalToyama 930-0194Japan Department of Gastroenterology Takaoka Municipal HospitalTakaoka 933-8550Japan Gastroenterology Center Nanto Municipal HospitalNanto 932-0211Japan Department of Gastroenterology Saiseikai Toyama HospitalToyama 931-8533Japan

BACKGROUND Hepatocellular carcinoma(HCC)in hepatitis C virus(HCV)-infected patients has a high risk of *** eradication of HCV is expected to reduce this risk,the risk in patients with a history of HCC may be high after treatment with direct-acting antivirals(DAAs).AIM To determine the risk factors for HCC recurrence in patients with HCV and a history of *** The risk of HCC recurrence in patients with a history of HCC and/or of HCC occurrence in patients without a history of HCC after DAA therapy was retrospectively analyzed in 311 HCV patients treated at our institution and several neighboring *** frequency and predictors of HCC recurrence/occurrence after DAA treatment were included in these *** clinical course of HCC before and after DAA treatment was also *** HCV patients with a history of HCC were older and had greater progression of liver fibrosis and diabetes than patients without a history of *** recurrence-free survival(RFS)was 1092 d in patients with a history of HCC,and post-DAA HCC recurrence/occurrence was observed in 29 patients(53.7%)with and 5(1.9%)without a history of HCC over 6 years(P<0.001).RFS in patients with a history of HCC did not differ significantly before and after DAA *** frequency of HCC recurrence/occurrence in patients with a history of HCC was lower after than before DAA *** analysis showed that the incidence rate of HCC recurrence/occurrence before DAA treatment was the only independent predictor of HCC recurrence/occurrence after DAA *** function was well preserved and clinical course was good in patients with HCC recurrence/occurrence after DAA *** DAA therapy in patients infected with HCV is also effective in patients with a history of *** treatment for HCC is desirable before DAA *** frequency of HCC recurrence/occurrence before DAA therapy was associated with a significantly increased risk of H

关键词： Direct-acting antivirals Hepatitis C virus Hepatocellular carcinoma Recurrence Liver fibrosis Curative treatment

Risk factors for de novo hepatitis B during solid cancer treatment

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World Journal of Clinical Cases 2020年第24期8卷 6264-6273页

作者： Rie Sugimoto Masayuki Furukawa Takeshi Senju Yoshihusa Aratake Yuki Tanaka Hiroki Inada Tatsuya Noguchi Lingaku Lee masami Miki Yuji Maruyama Risa Hashimoto Terumasa Hisano Mototsugu Shimokawa Department of Hepato-Biliary-Pancreatology National Hospital Organization Kyushu Cancer CenterFukuoka City 811-1395Fukuoka PrefectureJapan National Hospital Organization Kyushu Cancer Center Clinical Research InstituteFukuoka City 811-1395Fukuoka PrefectureJapan Department of Biostatistics Yamaguchi University Graduate School of MedicineUbe City 755-8505Yamaguchi PrefectureJapan

BACKGROUND Reactivation of hepatitis B virus(HBV)during anticancer treatment is a critical *** treating patients with solid tumors,it is unclear whether specific cancer types or treatments affect HBV reactivation in hepatitis B surface antigen(HBsAg)-negative and hepatitis B core antibody(HBcAb)-positive patients,socalled de novo hepatitis B *** risk of de novo hepatitis B may vary based on different background *** To determine the frequency and risk factors for de novo hepatitis B during solid tumor *** This retrospective cohort study comprised 1040 patients without HBsAgs and with HBcAbs and/or hepatitis B surface antibodies(HBsAbs).The patients were treated for solid cancer from 2008 to 2018 at the National Kyushu Cancer Center and underwent HBV DNA *** characteristics and disease and treatment information were *** DNA measurements were performed using TaqMan polymerase chain reaction(PCR).To identify the risk factors associated with HBV DNA expression,the age,sex,original disease,pathology,treatment method,presence or absence of hepatitis C virus(HCV),and HBsAb and/or HBcAb titers of all subjects were *** patients with HBV DNA,the time of appearance,presence of HBsAgs and HBsAbs at the time of appearance,and course of the subsequent fluctuations in virus levels were also *** Among the 1040 patients,938 were HBcAb positive,and 102 were HBcAb negative and HBsAb *** DNA expression was observed before the onset of treatment in nine patients(0.9%)and after treatment in 35 patients(3.7%),all of whom were HBcAb *** HBV reactivation group showed significantly higher median HBcAb values[9.00(8.12-9.89)vs 7.22(7.02-7.43),P=0.0001]and significantly lower HBsAb values(14 vs 46,P=0.0342)than the group without ***,the reactivated group showed a significantly higher proportion of cancers in organs related to digestion and absorption(79.0%vs 58.7%,

关键词： Hepatitis B Reactivation Solid cancer treatment Digestion and absorption organ Hepatitis B surface antibody Hepatitis B core antibody titer

Clinically diagnosed late-onset fulminant Wilson's disease without cirrhosis: A case report

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World Journal of Gastroenterology 2018年第2期24卷 290-296页

作者： Takahiro Amano Tokuhiro Matsubara Tsutomu Nishida Hiromi Shimakoshi Akiyoshi Shimoda Aya Sugimoto Kei Takahashi Kaori Mukai Masashi Yamamoto Shiro Hayashi Sachiko Nakajima Koji Fukui masami Inada Department of Gastroenterology and Hepatology Toyonaka Municipal Hospital

A 64-year-old woman was referred to our hospital with jaundice of the bulbar conjunctiva and general fatigue. After admission, she developed hepatic encephalopathy and was diagnosed with fulminant hepatitis based on the American Association for the Study of Liver Disease(AASLD) position paper. Afterwards, additional laboratory findings revealed that serum ceruloplasmin levels were reduced, urinary copper levels were greatly elevated and Wilson's disease(WD)-specific routine tests were positive, but the Kayser-Fleischer ring was not clear. Based on the AASLD practice guidelines for the diagnosis and treatment of WD, the patient was ultimately diagnosed with fulminant WD. Then, administration of penicillamine and zinc acetate was initiated; however, the patient unfortunately died from acute pneumonia on the 28 th day of hospitalization. At autopsy, the liver did not show a bridging pattern of fibrosis suggestive of chronic liver injury. Here, we present the case of a patient with clinically diagnosed late-onset fulminant WD without cirrhosis, who had positive disease-specific routine tests.

关键词： Wilson’s disease Fulminant hepatitis Lateonset Liver cirrhosis Copper

Correlation of N-myc downstream-regulated gene 1 expression with clinical outcomes of colorectal cancer patients of different race/ethnicity

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World Journal of Gastroenterology 2007年第20期13卷 2803-2810页

作者： Minori Koshiji Kensuke Kumamoto Keiichirou Morimura Yasufumi Utsumi Michiko Aizawa masami Hoshino Shinji Ohki Seiichi Takenoshita Max Costa Thérèse Commes David Piquemal Curtis C Harris Kam-Meng Tchou-Wong Department of Environmental Medicine New York University School of Medicine 57 Old Forge Road Tuxedo NY 10987 United States Shinji Ohki Seiichi Takenoshita Second Department of Surgery Fukushima Medical University 1 Hikarigaoka Fukushima 960-1295 Japan Curtis Harris National Institutes of Health National Cancer Institute Building 37 Bethesda MD 20892 United States Department of Pathology Osaka City University Osaka Japan Department of Pathology Ohara General Hospital 6-11 Ohmachi Fukushima 960-8611 Japan Department of Surgery Ohara General Hospital 6-11 Ohmachi Fukushima 960-8611 Japan David Piquemal University Montpellier Ⅱ Montpellier France

AIM： To evaluate the role of N-myc downstream- regulated gene 1 （NDRG1） expression in prognosis and survival of colorectal cancer patients with different ethnic backgrounds. METHODS： Because NDRG1 is a downstream target of p53 and hypoxia inducible factor-1α （HIF-1α）, we examined NDRG1 expression together with p53 and HIF-1α by irnmunohistochernistry. A total of 157 colorectal cancer specimens including 80 from Japanese patients and 77 from US patients were examined. The correlation between protein expression with clinicopathological features and survival after surgery was analyzed. RESULTS： NDRG1 protein was significantly increased in colorectal tumor compared with normal epithelium in both Japanese and US patient groups. Expression of NDRG1 protein was significantly correlated with lymphatic invasion, venous invasion, depth of invasion, histopathological type, and Dukes＇ stage in Japanese colorectal cancer patients. NDRG1 expression was correlated to histopathological type, Dukes＇ stage and HIF-1α expression in US-Caucasian patients but not in US-African American patients. Interestingly, Kaplan-Meier survival analysis demonstrated that NDRG1 expression correlated significantly with poorer survival in US-African American patients but not in other patient groups. However, in p53-positive US cases, NDRG1 positivity correlated significantly with better survival. In addition, NDRG1 expression also correlated significantly with improved survival in US patients with stages Ⅲ and IV tumors without chemotherapy. In Japanese patients with stages Ⅱ and Ⅲ tumors, strong NDRG1 staining in p53- positive tumors correlated significantly with improved survival but negatively in patients without chemotherapy. CONCLUSION： NDRG1 expression was correlated with various clinicopathological features and clinical outcomes in colorectal cancer depending on the race/ethnicity of the patients. NDRG1 may serve as a biological basis for the disparity of clinical outcomes of colorectal canc

关键词： NDRG1 expression Colorectal cancer Race Ethnicity Clinical outcomes

Bioethanol Production from Molasses by Yeasts with Stress-Tolerance Isolated from Aquatic Environments in Japan

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Advances in Microbiology 2019年第12期9卷 1000-1011页

作者： Yuka Naito Masahiko Okai masami Ishida Masachika Takashio Naoto Urano Laboratory of Marine Biochemistry Department of Ocean Sciences Tokyo University of Marine Science and Technology Konan Minato-ku Tokyo Japan Zensho Laboratories of Food Technology Zensho Holdings Co. Ltd. Konan Minato-ku Tokyo Japan

Bioethanol is a safe and renewable source of energy that continues to be a research focus, since fossil fuels have been linked to global warming and nuclear energy sources are affected by the increased safety concerns following the 2011 nuclear power plant accident in Japan. In general, bioethanol is converted from a biomass by yeast fermentation. The production efficiency of this bioethanol is not sufficiently high, and its practical use as a substitute for fossil fuels and nuclear energy is thus limited. For the industrial production of bioethanol, the yeast fermentation of biomass cultures containing high concentration sugar, NaCl, and ethanol is necessary, but this might induce phenomena in which the stresses arising in the yeasts weaken their cells during fermentation. As described herein, we isolated 1028 strains of yeasts from natural aquatic environments: Japan’s Tama River and Lake Kasumigaura. Among them, 412 strains were fermentative yeasts and 31 strains showed high fermentation ability under a 30% sorbitol + 10% ethanol condition. These strains were identified as Torulaspola delbrueckii, Wickerhamomyces anomalus, Candida glabrata, Pichia kudriavzevii, Saccharomyces cf. cerevisiae/paradoxus, and Lachancea kluyveri. The strains T. delbrueckii, W. anomalus, and C. glabrata also showed tolerance against 15% NaCl. Most importantly, S. cf. cerevisiae/paradoxus H28 and L. kluyveri F2-67 produced 57.4 g/L and 53.9 g/L ethanol from molasses (sucrose 104.0 g/L, fructose 33.4 g/L, and glucose 24.8 g/L) within 48 hrs at 25°C, respectively.

关键词： Stress-Tolerance Molasses Yeast Species Aquatic Environment Fermentation

Non-destructive investigation of the 3D inner structure of Precambrian embryos fossil by synchrotron hard x-ray phase contrast micron CT

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Non-destructive investigation of the 3D inner structure of P...

BOILING HEAT TRANSFER OF NATURAL REFRIGERANT CO2 IN A SMALL TUBE

第十一届中国体视学与图像分析学术会议

作者： Paul Tafforeau masami Ando Hiroshi Sugiyama European Synchrotron Radiation Facility France Tokyo University of Science Japan Photon Factory KEK Japan

The recent development of the synchrotron hard x-ray phase contrast imaging and CT with sub-micron and nano-meter resolution is. presented first. Then I will focus on this method’s application in paleontology. The Weng’an fauna from Precambrian Doushantuo phosphates in Weng ’ an, Guizhou Province, China, contains likely fossil representatives of the oldest known metazoans, radiometrically age-dated as at least 580 million years old. One of the main restriction to study these unique fossils is the scarcity of the non-destruc-

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BOILING HEAT TRANSFER OF NATURAL REFRIGERANT CO2 IN A SMALL ...

Au Nanoparticle Formation from Amorphous Au/Si Multilayer

第一届亚洲制冷空调大会

作者： Yasutaka AOKI masami TANIGUCHI Yoshinori WATANABE Mitsubishi Heavy Industries Ltd. Nagoya R&D center 1-Takamichi Iwatsuka-cho Nakamura-ku Nagoya 453-8515 Japan

The object of this study is to obtain experimental data for the boiling heat transfer coefficients and the pressure drops for flow of CO in a horizontal small tube, of which inner diameter is 1.0mm. The experimental conditions considered in this study are following range of variables: evaporation temperature is 0℃, mass flux is from 100 to 800 kg/(ms), heat flux is from 5 to 40kW/m, quality is from 0.1 to 0.8. As a result, the experimental values of the frictional pressure drop are smaller than that given by Chisholm-Laird’s correlation. In the boiling heat transfer coefficient of CO, the nucleate boiling is predominant when the mass flux is low and the forced convection evaporation is predominant when the mass flux is high. Thus it can be assumed that the mechanism of boiling heat transfer of CO in a small tube is similar to that in a tube of relatively large diameter.

关键词： CO2 Boiling Evaporation Heat Transfer Small Tube

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Journal of Crystallization Process and Technology 2014年第4期4卷 193-205页

作者： masami Aono Takashi Ueda Hiroshi Abe Shintaro Kobayashi Katsuhiko Inaba Department of Materials Science and Engineering National Defense Academy Yokosuka Japan Application Laboratory Rigaku Co. Akishima Tokyo Japan

By direct observations of transmission electron microscopy (TEM), irreversible morphological transformations of as-deposited amorphous Au/Si multilayer (a-Au/a-Si) were observed on heating. The well arrayed sequence of the multilayer changed to zigzag layered structure at 478 K (=Tzig). Finally, the zigzag structure transformed to Au nanoparticles at 508 K. The distribution of the Au nanoparticles was random within the thin film. In situ X-ray diffraction during heating can clarify partial crystallization Si (c-Si) in the multilayer at 450 K (= ), which corresponds to metal induced crystallization (MIC) from amorphous Si (a-Si) accompanying by Au diffusion. On further heating, a-Au started to crystallize at around 480 K (=Tc) and gradually grew up to 3.2 nm in radius, although the volume of c-Si was almost constant. Continuous heating caused crystal Au (c-Au) melting into liquid AuSi (l-AuSi) at 600 K (= ), which was lower than bulk eutectic temperature ( ). Due to the AuSi eutectic effect, reversible phase transition between liquid and solid occurred once temperature is larger than . Proportionally to the maximum temperatures at each cycles (673, 873 and 1073 K), both and Au crystallization temperature approaches to . Using a thermodynamic theory of the nanoparticle formation in the eutectic system, the relationship between and the nanoparticle size is explained.

关键词： Amorphous Au/Si Multilayer Au Nanoparticle Low Eutectic Point Metal Induced Crystallization Irreversible Morphological Transformation Reversible l-AuSi-c-Au Nanoparticle Phase Transition