Linked Life Data

8381567

Source:http://linkedlifedata.com/resource/pubmed/id/8381567

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1993-3-8
pubmed:abstractText
delta 9-Tetrahydrocannabinol (THC), the major psychoactive component in marihuana has been shown to affect male and female reproduction in both humans and animals. THC has effects at the level at the pituitary-hypothalamic axis as well as a direct effect on the testis and ovary. A specific gonadal effect of THC is inhibition of steroidogenesis in cultured granulosa cells from immature, estrogen-treated rats that depends in part on a post-cyclic AMP site of action. The effect of THC on cAMP accumulation itself, however, has not yet been examined in this cell type. The aim of the present study was to examine the effect of THC on granulosa cell cAMP accumulation, a process that is important for several granulosa cell functions, including steroidogenesis. THC inhibited FSH-stimulated cAMP accumulation in a dose-dependent manner at concentrations which were not cytotoxic. This inhibition was evident by 2 hr and did not affect the dose of FSH which gave half-maximal stimulation, suggesting that THC does not compete with FSH for binding to its receptor. Detailed investigations regarding the mechanism of THC inhibition were conducted using forskolin and isoproterenol. In contrast to its effect on FSH stimulation, THC did not inhibit forskolin- or isoproterenol-stimulated cAMP accumulation, indicating a specific effect for the FSH receptor. In addition, inhibition of FSH-stimulated cAMP accumulation occurred in the presence of a phosphodiesterase inhibitor, indicating that THC does not decrease cAMP accumulation through an increase in the cAMP degradative pathway. These data indicate that a part of the reproductive toxicity seen with THC may be due to a specific alteration of the hormonal control of granulosa cell function via a specific inhibition of FSH-stimulated cAMP accumulation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0041-008X
pubmed:author
pubmed:issnType
Print
pubmed:volume
118
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
53-7
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Specific inhibition of FSH-stimulated cAMP accumulation by delta 9-tetrahydrocannabinol in cultured rat granulosa cells.
pubmed:affiliation
National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709.
pubmed:publicationType
Journal Article