NDLI: The effect of unilateral decortication on the patterns of pulsatile Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH) release and on mean Plasma Prolactin (Prl) levels in the ovariectomized rat

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The effect of unilateral decortication on the patterns of pulsatile Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH) release and on mean Plasma Prolactin (Prl) levels in the ovariectomized rat

Content Provider	Semantic Scholar
Author	Castro, J. C. B. Petrović, S. L. McCann, S. M.
Copyright Year	1986
Abstract	Previous experiments have shown that unilateral decortication is followed by an elevation in FSH and LH secretion, but there has been no study of the rhythms of release of gonadotropins in these animals. Consequently, this study was undertaken to determine if there are alterations in the pulsations of gonadotropins following hemi-decortication and also to measure plasma Prl in these animals to determine if it might also be under the influence of extrahypothalamic pathways. Our results show an increased mean plasma LH in unilateral decorticate animals that occurred because of an increase in pulse frequency without a significant increase in pulse amplitude. Mean plasma FSH was also elevated significantly in unilaterally decorticate animals, but there was no significant change in pulse frequency or amplitude. The length of the interpulse interval for LH release secretion decreased in unilateral decorticate animals, whereas the length of the cycle of FSH secretion increased in this circumstance. The mean levels of Prl were reduced in unilateral decorticate animals. These changes indicate that unilateral removal of cortico-rhinencephalic structures has an excitatory influence on gonadotropin secretion mediated by an increased frequency of LH and decreased frequency of FSH pulsations in the castrate, while at the same time there is a lowering of plasma Prl, probably due to removal of excitatory cortico-rhinencephalic pathways.
Starting Page	733
Ending Page	737
Page Count	5
File Format	PDF HTM / HTML
DOI	10.1016/0361-9230(86)90145-0
PubMed reference number	3091193
Journal	Medline
Volume Number	16
Alternate Webpage(s)	https://api.elsevier.com/content/article/pii/0361923086901450
Alternate Webpage(s)	https://www.sciencedirect.com/science/article/pii/0361923086901450?dgcid=api_sd_search-api-endpoint
Alternate Webpage(s)	https://doi.org/10.1016/0361-9230%2886%2990145-0
Journal	Brain Research Bulletin
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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