Temporal effects of restricted diet and compensatory increased dietary intake on thyroid function, plasma growth hormone levels and tissue lipid reserves of rainbow trout Oncorhynchus mykiss

Aquaculture ◽  
1992 ◽  
Vol 104 (1-2) ◽  
pp. 157-174 ◽  
Author(s):  
K.J. Farbridge ◽  
P.A. Flett ◽  
J.F. Leatherland
Keyword(s):  
Growth Hormone ◽  
Rainbow Trout ◽  
Dietary Intake ◽  
Oncorhynchus Mykiss ◽  
Thyroid Function ◽  
Tissue Lipid ◽  
Restricted Diet ◽  
Plasma Growth Hormone ◽  
Temporal Effects ◽  
Rainbow Trout Oncorhynchus Mykiss

Effect of 17β-estradiol on the expression of somatostatin genes in rainbow trout (Oncorhynchus mykiss)

2000 ◽  
Vol 279 (2) ◽  
pp. R389-R393 ◽  
Author(s):  
Alison C. Holloway ◽  
Gregory T. Melroe ◽  
Melissa M. Ehrman ◽  
P. Konda Reddy ◽  
John F. Leatherland ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Plasma Levels ◽  
Endocrine Pancreas ◽  
Mrna Levels ◽  
Plasma Growth Hormone ◽  
Hormone Levels ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
17Β Estradiol

In the present study, the effects of 17β-estradiol (E2) treatment on the expression of preprosomatostatin (PPSS) I, PPSS II′, and PPSS II" mRNA in the hypothalamus and endocrine pancreas (Brockmann body), as well as the effects of E2 treatment on plasma somatostatin (SS)-14 and -25 concentrations in sexually immature rainbow trout ( Oncorhynchus mykiss), were investigated. E2treatment significantly ( P < 0.001) depressed both plasma SS-14 and SS-25. In the hypothalamus, E2 treatment significantly ( P < 0.001) decreased the levels of PPSS I and PPSS II" mRNA. However, there was no effect of E2treatment on PPSS II′ mRNA levels. In the pancreas, E2treatment had no significant effect on the levels of either PPSS II′ mRNA or PPSS II" mRNA. However, E2 treatment significantly ( P < 0.005) decreased levels of PPSS I mRNA. These data suggest that E2 acts, in part, to increase plasma growth hormone levels in rainbow trout by decreasing the endogenous inhibitory somatostatinergic tone by inhibiting plasma levels of both SS-14 and SS-25 and hypothalamic levels of mRNA encoding these proteins.

Endocrine and orexigenic actions of growth hormone secretagogues in rainbow trout (Oncorhynchus mykiss)

2007 ◽  
Vol 146 (3) ◽  
pp. 390-399 ◽  
Author(s):  
Brian S. Shepherd ◽  
Jaime K. Johnson ◽  
Jeffrey T. Silverstein ◽  
Ishwar S. Parhar ◽  
Mathilakath M. Vijayan ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Growth Hormone Secretagogues ◽  
Rainbow Trout Oncorhynchus Mykiss
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