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Development of a system for measuring calcitonin in the stingray Dasyatis akajei (a cartilaginous fish): the possible involvement of stingray calcitonin in gonadal development | ||
International Aquatic Research | ||
مقاله 5، دوره 11، شماره 3، آذر 2019، صفحه 267-276 اصل مقاله (482.96 K) | ||
نوع مقاله: Original research | ||
شناسه دیجیتال (DOI): 10.1007/s40071-019-00236-0 | ||
نویسندگان | ||
Takashi Takagi1؛ Toshio Sekiguchi2؛ Yuichi Sasayama2؛ Atsuhiko Hattori3؛ Takushi X. Watanabe4؛ Yoichiro Kitani2؛ Yoshiaki Tabuchi5؛ Hajime Matsubara6؛ Ajai K. Srivastav7؛ Tran Ngoc Hai8؛ Thumronk Amornsakun9؛ Nobuo Suzuki* 2 | ||
1Department of Biology, Faculty of Science, University of Toyama, Gofuku, Toyama, 930-8555, Japan | ||
2Noto Marine Laboratory, Institute of Nature and Environmental Technology, Division of Marine Environmental Studies, Kanazawa University, Noto-cho, Ishikawa, 927-0553, Japan | ||
3Department of Biology, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Ichikawa, Chiba, 272-0827, Japan | ||
4Peptide Institute, Inc, Ibaraki, Osaka, 567-0085, Japan | ||
5Life Science Research Center, University of Toyama, Sugitani, Toyama, 930-0194, Japan | ||
6Noto Center for Fisheries Science and Technology, Kanazawa University, Noto-cho, Ishikawa, 927-0552, Japan | ||
7Department of Zoology, D.D.U. Gorakhpur University, Gorakhpur, 273-009, India | ||
8College of Aquaculture and Fisheries, Can Tho University, Can Tho City, Vietnam | ||
9Fisheries Technology Program, Faculty of Science and Technology, Prince of Songkla University, Pattani, 94000, Thailand | ||
چکیده | ||
To elucidate the physiological role of calcitonin (CT) in stingrays (cartilaginous fish), an enzyme-linked immunosorbent assay (ELISA) system using a specific antibody against stingray CT has been developed. Synthetic stingray CT was subcutaneously injected into mice four times—once every 2 weeks—together with an adjuvant. We purified the IgG antibody fraction using the protein A affinity chromatography from collected antiserum. Evaluating the antibody titer, we found the antibody’s optimum dilution ratio to be 600 times. Competitive ELISA has been developed using the antibody diluted 600 times. Our antibody did not cross-react with teleost CTs and muscle extraction, but cross-reacted with stingray plasma and the extract of the ultimobranchial gland, the secretary organ of stingray CT. Using this ELISA, we measured the plasma CT level in stingrays and examined its correlation with several mineral concentrations. Plasma CT did not show significant correlation to calcium, magnesium, inorganic phosphorus, sodium, chlorine, or urea, although there was a correlation among the factors involved in osmoregulation, such as sodium, chlorine, and urea. On the other hand, plasma CT was significantly correlated to body weight and length. Furthermore, there was a significant correlation between plasma CT and gonad weight. Since plasma CT was correlated with the weight of liver, which is involved in the synthesis of egg yolk protein, we examined the influence of 17β-estradiol (E2) on CT secretion. After E2 injection, the plasma CT level increased significantly. This is the first study to demonstrate that E2 induced plasma CT secretion in cartilaginous fish. | ||
کلیدواژهها | ||
Calcitonin؛ Sexual maturation؛ ELISA؛ Stingray؛ Cartilaginous fish | ||
آمار تعداد مشاهده مقاله: 170 تعداد دریافت فایل اصل مقاله: 131 |