The Secretion of Insulin and Its Role in Cyclostomes and Fishes

Plisetskaya, E. M.; Leibush, B. N.; Бондарева, В. М.

doi:10.1016/b978-0-08-021257-9.50024-3

Cited by 24 publications

(11 citation statements)

References 19 publications

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“…The concentration of E 2 was determined by radioimmunoassay (RIA) as described by Sower and Schreck (1982) with slight modification. Plasma thyroxine (T 4 ) and triiodothyronine (T 3 ) were determined by RIA as described by Dickhoff et al (1978Dickhoff et al ( , 1982, and plasma insulin concentrations were measured by RIA using anti-coho salmon insulin serum and coho salmon standard and label as described by Plisetskaya et al (1986).…”

Section: Methodsmentioning

confidence: 99%

“…There is evidence that thyroid hormones may synergize with gonadotropin to promote ovarian steroidogenesis in goldfish (Hurlburt 1977), carp (Epler and Bieniarz 1983), freshwater perch (Sen and Bhattacharya 1981) and rainbow trout . There appear to be seasonal changes in circulating insulin in fish (Plisetskaya et al 1976;Murat et al 1981;Sower et al 1985;Gutierrez et al 1987Gutierrez et al , 1988) that may have some relationship to reproduction either in regard to control of intermediary metabolism or direct action on the gonad analogous to their action in mammals (Poretsky and Kalin 1987). We present here a partial summary of some recent work from our laboratory on the seasonal changes in blood levels of thyroid hormones and insulin in reproductively maturing salmonids, and we suggest possible roles of these hormones in reproduction.…”

Section: Introductionmentioning

confidence: 98%

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Relationship between metabolic and reproductive hormones in salmonid fish

Dickhoff

Yan

Plisetskaya

et al. 1989

Fish Physiol Biochem

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Circulating concentrations of estradiol (E2), vitellogenin (VTG), thyroxine (T4), triiodothyronine (T3) and insulin were measured in reproductively maturing four and five year-old Atlantic salmon. Blood samples were collected from the fish in seawater for one year prior to their spawning in November in fresh water. In females, E2 and VTG were low but detectable from December to July, and then increased to peak levels in September and October. Plasma levels of T4 and T3 were relatively constant in winter and spring, and decreased in July. Plasma concentration of T4 increased in November when the fish returned to fresh water. Plasma T3 levels remained low during the autumn. Both T4 and T3 levels tended to be higher in males than in females during September through November. Plasma insulin concentrations increased during the spring to peak values in May, and then decreased in June and July in fish of both sexes. There was a significant elevation of plasma insulin in males during October, and the levels in males tended to be higher than those found in females during final maturation.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Relationship between metabolic and reproductive hormones in salmonid fish

Dickhoff

Yan

Plisetskaya

et al. 1989

Fish Physiol Biochem

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“…First, after homologous radioimmunoassays (RIAs) for piscine insulin were introduced, it became evident that fish are not insulin-deficient but, in contrast, have very high levels of circulating immunoreactive plasma insulin (reviewed by Plisetskaya 1990;Mommsen and Plisetskaya 1991). Second, glucose stimulates insulin release in situ from the perfused endocrine pancreas of European eel, Anguilla anguilla (Ince and Thorpe 1977); in vitro from perfused Brockmann body of the catfish, Ictalurus punctatus Scarpa 1984, 1987;Mommsen and Plisetskaya 1991) and in vivo after administration either per os or intraperitoneally to several representatives of teleost fishes (Plisetskaya et al 1976;Yone 1979). Third, fish maintained on a high carbohydrate diet often have higher plasma insulin levels than fish kept on a regular diet (Yone 1979;Furuichi and Yone 1981;Hilton et al 1987).…”

Section: Introductionmentioning

confidence: 98%

Insulin-receptor binding in skeletal muscle of trout

Gutiérrez

Åsgård

Fabbri

et al. 1991

Fish Physiol Biochem

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Two hundred rainbow trout (Oncorhynchus mykiss) age 0 +, weight range 11.3 - 11.5 g, were distributed randomly in two groups and maintained for five weeks on either 10% dextrin, or 20% dextrin diet. The fish were sampled 3-5 h and 18-20 h after the last feeding and insulin binding to partially purified insulin receptors in white and red skeletal muscles and to liver plasma membranes was assessed. Plasma insulin, plasma glucose, and liver glycogen content were analyzed in the same fish.Fish fed a diet with higher carbohydrate content (HC) had elevated insulin and glucose levels in peripheral blood, but lower liver glycogen contents compared to the fish fed a diet with lower carbohydrate content (LC). No growth retardation was observed in the fish from HC group.Three to five hours after the last feeding, insulin-receptor binding in white skeletal muscles was higher in HC group of fish, mostly because of an increase in number of high affinity binding sites. Eighteen to twenty hours after the last feeding this difference disappeared. In contrast, the specific binding of insulin to the liver plasma membranes appeared to be lower in the HC group of fish. The lower insulin binding to the liver plasma membranes observed 3-5 h after feeding, could be attributed to the lower quantity of binding sites, while the same phenomenon 18 h after feeding was likely a result of affinity changes. We conclude that higher glycemic levels observed in trout fed a HC diet as compared to LC group of fish, are not a consequence of impaired binding of insulin to its receptors in skeletal muscles.

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“…Amino acids are considered insulinotropic in fish (Plisetskaya et al, 1976). Recently, Plisetskaya et al ( 1991) found that feeding coho salmon, chinook salmon and rainbow trout with arginine-supplemented diets caused an elevation of plasma insulin levels.…”

Section: Introductionmentioning

confidence: 99%

Quantitative arginine requirement of Atlantic salmon (Salmo salar) reared in sea water

et al. 1994

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A study utilizing casein-corn gluten meal based diets supplemented with crystalline amino acids was conducted to determine the quantitative arginine requirement of Atlantic salmon smolts. Fish were gradually acclimated to sea water (32 ppt ) and maintained for 8 weeks prior to commencement of the study. Triplicate groups of Atlantic salmon were fed to satiation diets (CP: 40% DM) containing 1.1-3.2 g Arg/lOO g diet (2.7-8% of protein)for a period of 8 weeks. Growth, feed utilization and nitrogen retention data showed the requirement for arginine of Atlantic salmon to be 1.6% of dry matter (4.1% of dietary protein). An arginine requirement of 1.6% of dry matter (4.1% of dietary protein) was also obtained from broken-line regression of expired 14C02 (following an intraperitoneal injection of L-[ U-'4C]arginine versus dietary concentration. Except for the loss of appetite resulting in a low feed intake and depressed growth, no nutritional deficiency signs were observed in fish fed an arginine deficient diet for 98 days. The significance of several biochemical indices measured including liver arginase activity and plasma arginine, insulin and growth hormone levels of fish fed graded levels of arginine supplement is also discussed.

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The Secretion of Insulin and Its Role in Cyclostomes and Fishes

Cited by 24 publications

References 19 publications

Relationship between metabolic and reproductive hormones in salmonid fish

Relationship between metabolic and reproductive hormones in salmonid fish

Insulin-receptor binding in skeletal muscle of trout

Quantitative arginine requirement of Atlantic salmon (Salmo salar) reared in sea water

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