Plasma levels of β-endorphin in white-tailed deer: Seasonal variation and the effect of thyroxine, GnRH, dexamethasone and acth administration

Bibliographic Details
Title:	Plasma levels of β-endorphin in white-tailed deer: Seasonal variation and the effect of thyroxine, GnRH, dexamethasone and acth administration
Authors:	J.H. Smith, Arthur Flynn, G.A. Bubenik
Source:	Comparative Biochemistry and Physiology Part A: Physiology. 90:309-313
Publisher Information:	Elsevier BV, 1988.
Publication Year:	1988
Subject Terms:	Male, 0301 basic medicine, Thyroxine, 0303 health sciences, 03 medical and health sciences, Adrenocorticotropic Hormone, Deer, beta-Endorphin, Animals, Seasons, Pituitary Hormone-Releasing Hormones, Dexamethasone, 3. Good health
Description:	1. A distinct seasonal cycle of beta-endorphin (beta-E) was detected in plasma of four intact, male white-tailed deer. Peak levels (around 11 pg/ml) were observed in August and minimal concentrations (around 5 pg/ml) were detected in January and February. 2. The seasonal variation (which corresponds to intensity of antler growth) was more pronounced in the two mature bucks, as compared to the immature ones. 3. Intramuscular administration of synthetic thyroxine (in doses of 500, 750 and 1000 micrograms/deer) and GnRH (100 micrograms/deer) had generally no significant effect on the beta-E levels. 4. I.v. administration of dexamethasone (5 mg/deer) as well as i.m. injection ACTH (20 Int. Units/deer) significantly reduced beta-E levels.
Document Type:	Article
Language:	English
ISSN:	0300-9629
DOI:	10.1016/0300-9629(88)91121-8
Access URL:	https://pubmed.ncbi.nlm.nih.gov/2900121 https://www.ncbi.nlm.nih.gov/pubmed/2900121 https://www.sciencedirect.com/science/article/pii/0300962988911218
Rights:	Elsevier TDM
Accession Number:	edsair.doi.dedup.....207a635d0b46face904297b4db44d8d0
Database:	OpenAIRE

Description
ISSN:	03009629
DOI:	10.1016/0300-9629(88)91121-8