Document Detail


Corticosteroid activity, in vitro, in interrenal tissue of Atlantic salmon (Salmo salar) parr. 1. Synthetic profiles.
MedLine Citation:
PMID:  7958756     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Fresh interrenal tissue of Atlantic salmon (Salmo salar) parr transformed [3H]pregnenolone and [14C]progesterone, in vitro, to double-labeled cortisol and corticosterone with yields of less than 3% 3H and 5% 14C at 0-5 degrees, 8-10 degrees, and 22-24 degrees over various incubation periods. Incubations at 22-24 degrees gave the highest yields. A time-yield study at 22-24 degrees for 0.5 to 3 hr in late March showed that metabolic patterns did not change with time as metabolic yields increased. Double-labeled metabolites, 11-deoxycortisol, 21-deoxycortisol, and 17 alpha-hydroxyprogesterone, were all detected in hatchery-reared Annapolis River stock in April, but not in November. The 3H:14C ratio of cortisol was significantly lower (P < 0.05) in late April than in early November. Isotopic ratios of corticosterone, but not cortisol, differed significantly (P < 0.05) between immature and precocious parr in November. The isolation of double-labeled corticosterone from all incubations, except immature parr in November, may indicate a metabolic role for the 17-deoxycorticosteroids. No differences in the histology of interrenal tissues were found between Spring (April-May) and Autumn (October-November) parr. Sulfuric acid chromogens on TLC typical of cortisol, corticosterone, and 11-deoxycortisol and other, less polar delta-5-steroids, but not cortisone, in amounts estimated to be > or = 0.1 microgram, were detected in head kidney tissues (0.5-4.5 g) and blood plasma (7-18 ml) of parr in July, late November, and early December.
Authors:
G B Sangalang; J F Uthe
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  General and comparative endocrinology     Volume:  95     ISSN:  0016-6480     ISO Abbreviation:  Gen. Comp. Endocrinol.     Publication Date:  1994 Aug 
Date Detail:
Created Date:  1994-12-28     Completed Date:  1994-12-28     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0370735     Medline TA:  Gen Comp Endocrinol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  273-85     Citation Subset:  IM    
Affiliation:
Marine Chemistry Division, Department of Fisheries and Oceans, Halifax, Nova Scotia, Canada.
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MeSH Terms
Descriptor/Qualifier:
Adrenal Cortex Hormones / metabolism*
Animals
Chromatography, Thin Layer
Freezing
Histocytochemistry
Kidney / anatomy & histology,  metabolism*
Pregnenolone / pharmacology
Progesterone / pharmacology
Salmon / metabolism*
Seasons
Steroids / blood,  metabolism
Sulfuric Acids / chemistry
Temperature
Chemical
Reg. No./Substance:
0/Adrenal Cortex Hormones; 0/Steroids; 0/Sulfuric Acids; 145-13-1/Pregnenolone; 57-83-0/Progesterone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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