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Spawning induction and fecundity of commercial native fish species from the São Francisco River basin,Brazil,under hatchery conditions

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Agricultural Sciences 2013年第8期4卷 382-388页

作者： Fábio Pereira Arantes yoshimi sato Edson Vieira Sampaio Elizete Rizzo Nilo Bazzoli Laboratório de Ictiohistologia Departamento de MorfologiaUniversidade Federal de Minas Gerais(UFMG)Belo HorizonteBrasil Estacao de Hidrobiologia e Piscicultura de Três Marias Companhia de Desenvolvimento dos Vales do Sao Francisco e Parnaíba(CODEVASF)Três MariasBrasil Programa de Pós-Graduacao em Zoologia de Vertebrados Pontifícia Universidade Católicade Minas GeraisPUC MinasBelo HorizonteBrasil

In order to exploit native fish species for aquaculture, basic parameters of artificial reproducetion and estimates of reproductive potential for this fish must be determined to improve hatchery success. We analyze seven Brazilian commercial fish. Spawning was induced using the hypophysation method, with injection of crude carp pituitary extract (CCPE). Characiformes species signaled the spawning time with behavioral alterations (usually circular movements). The time of oocyte extrusion varied from 5.3 ± 0.3 h in Salminus franciscanus to 8.6 ± 0.1 h in Prochilodus argenteus after the second CCPE injection. The greatest diameter of a vitellogenic oocyte was registered for P. argenteus (873.9 ± 122.2 μm) and the smallest was for Pimelodus maculates (465.4 ± 36.3 μm). The diameter of vitellogenic oocytes was very similar among species belonging to the same family. The highest ROI values were registered for Prochilodus costatus(27.0 ± 3.5 μm) and P. argenteus (23.4 ± 3.7 μm), while the lowest values were found in Pseudoplatystoma corruscans (4.6 ± 0.9 μm) and P. maculatus (6.0 ± 1.3 μm). Absolute fecundity (number of oocytes released at spawning) was lowest in P. maculatus and highest in P. corruscans. Relative fecundity (RF) presented a high correlation (r = 0.98 to 0.99) with gonad weight, indicating high efficiency of spawning. The RF also presented a high correlation with body weight (r = 0.88 to 0.97) and total length (r = 0.86 to 0.92). The highest RF was registered for Leporinus obtusidens, and the lowest was for P. corruscans. Released fecundity had a negative correlation with the diameter of vitellogenic oocytes and with the height of the follicular cells, and a positive correlation with the thickness of the zona pelucida. These results indicate that the species studied herein are suitable candidates for aquaculture due to their reproductive and zootechnical characteristics.

关键词： Spawning Induction Fecundity Oocyte Neotropical Fish Sao Francisco River

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World Journal of Gastroenterology 2006年第11期12卷 1805-1809页

作者： yoshimi Nakajima Hitoshi Takagi Naondo Sohara Ken sato satoru Kakizaki Kenichi Nomoto Hideki Suzuki Taketoshi Suehiro Tatsuo Shimura Takayuki Asao Hiroyuki Kuwano Masatomo Mori Ken Nishikura Department of Medicine and Molecular Science Gunma University Graduate School of Medicine MaebashiGunma 371-8511Japan Department of Surgery Gunma University Graduate School of Medicine MaebashiGunma 371-8511Japan Division of Molecular and Functional Pathology Department of Cellular Function Niigata University Graduate School of Medicine and Dental SciencesNiigataNiigata 951-8510Japan

A 42-year-old woman was admitted to our hospital because of multiple liver tumors detected by ultrasonography. Colonoscopy revealed submucosal tumor in the rectum, which was considered the primary lesion. Endoscopic mucosal resection followed by histopathological examination revealed that the tumor was carcinoid. The resected margin of the tumor was positive for malignant cells. Two courses to transcatheter arterial chemotherapy for liver metastasis were ineffective. Accordingly, the rectal tumor and metastatic lymph nodes were surgically resected. One month after the operation, she received liver transplantation （left lateral segment and caudate lobe） from her son. No recurrent lesion has been observed at two years after the liver transplantation. Liver transplantation should be considered as a treatment option even in advanced case of carcinoid metastasis to the liver. We also discuss the literature on liver transplantation for metastatic carcinoid tumor.

关键词： Carcinoid Liver metastasis Living related liver transplantation

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Familial pancreatic cancer: Concept, management and issues

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World Journal of Gastroenterology 2017年第6期23卷 935-948页

作者： Hiroyuki Matsubayashi Kyoichi Takaori Chigusa Morizane Hiroyuki Maguchi Masamichi Mizuma Hideaki Takahashi Keita Wada Hiroko Hosoi Shinichi Yachida Masami Suzuki Risa Usui Toru Furukawa Junji Furuse Takamitsu sato Makoto Ueno yoshimi Kiyozumi Susumu Hijioka Nobumasa Mizuno Takeshi Terashima Masaki Mizumoto Yuzo Kodama Masako Torishima Takahisa Kawaguchi Reiko Ashida Masayuki Kitano Keiji Hanada Masayuki Furukawa Ken Kawabe Yoshiyuki Majima Toru Shimosegawa Division of Endoscopy Shizuoka Cancer Center Clinic of Genetic Medicine Shizuoka Cancer Center Department of Surgery Kyoto University Graduate School of Medicine Division of Hepatobiliary and Pancreatic Oncology National Cancer Center Hospital Center for Gastroenterology Teine-Keijinkai Hospital Department of Surgery Tohoku University Graduate School of Medicine Department of Hepatobiliary and Pancreatic Oncology National Cancer Center Hospital East Department of Surgery Teikyo University School of Medicine Division of Cancer Genomics National Cancer Center Research Institute Institute for Integrated Medical Sciences Tokyo Women’s Medical University Department of Internal Medicine Kyorin University School of Medicine Division of Gastroenterology Yokohama City University Graduate School of Medicine Division of Hepatobiliary and Pancreatic Medical Oncology Kanagawa Cancer Center Department of Gastroenterology Aichi Cancer Center Hospital Department of Gastroenterology Kanazawa University Graduate School of Medicine Department of Surgery Japan Bapist Hospital Department of Gastroenterology and Hepatology Kyoto University Graduate School of Medicine Clinical Genetics Unit Kyoto University Graduate School of Medicine Center for Genomic Medicine Kyoto University Graduate School of Medicine Osaka Medical Center for Cancer and Cardiovascular Diseases Second Department of Internal Medicine Wakayama Medical University Department of Gastroenterology Onomichi General Hospital Department of Gastroenterology NationalKyushu Cancer Center Department of Medicine and Bioregulatory Sciences Kyushu University Graduate School of Medical Science Pancreatic Cancer Action Network Department of Gastroenterology Tohoku University Graduate School of Medicine

Familial pancreatic cancer (FPC) is broadly defined as two first-degree-relatives with pancreatic cancer (PC) and accounts for 4%-10% of PC. Several genetic syndromes, including Peutz-Jeghers syndrome, hereditary pancreatitis, hereditary breast-ovarian cancer syndrome(HBOC), Lynch syndrome, and familial adenomatous polyposis (FAP), also have increased risks of PC, but the narrowest definition of FPC excludes these known syndromes. When compared with other familial tumors, proven genetic alterations are limited to a small proportion (Caucasian) and a younger onset are common also in FPC. In European countries, "anticipation" is reported in FPC families, as with other hereditary syndromes; a trend toward younger age and worse prognosis is recognized in the late years. The resected pancreases of FPC kindred often show multiple pancreatic intraepithelial neoplasia (Pan IN) foci, with various K-ras mutations, similar to colorectal polyposis seen in the FAP patients. As with HBOC patients, a patient who is a BRCA mutation carrier with unresectable pancreatic cancer (accounting for 0%-19% of FPC patients) demonstrated better outcome following platinum and Poly (ADP-ribose) polymerase inhibitor treatment. Western countries have established FPC registries since the 1990 s and several surveillance projects for highrisk individuals are now ongoing to detect early PCs. Improvement in lifestyle habits, including non-smoking, is recommended for individuals at risk. In Japan, the FPC study group was initiated in 2013 and the Japanese FPC registry was established in 2014 by the Japan Pancreas Society.

关键词： familial pancreatic cancer registry high risk genetic surveillance

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