What question did this study set out to answer?

To investigate whether specific pathways of arachidonic acid metabolism mediate luteinizing hormone-releasing hormone-stimulated luteinizing hormone secretion.

June 1, 1983Proceedings of the National Academy of SciencesOpen Access

Action of luteinizing hormone-releasing hormone: involvement of novel arachidonic acid metabolites.

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Authors

GSG.D. SnyderRegional Health JCJorge H. CapdevilaVanderbilt University NCN. ChacosUniversity of Texas Health Science Center at Dallas

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Implication

In vitro study reveals that epoxygenated arachidonic acid metabolites mediate hormone secretion in pituitary cells, indicating a novel signaling pathway for luteinizing hormone release.

Key Points

To investigate whether specific pathways of arachidonic acid metabolism mediate luteinizing hormone-releasing hormone-stimulated luteinizing hormone secretion.
Incubated anterior pituitary cells in vitro with luteinizing hormone-releasing hormone alongside metabolic inhibitors: indomethacin (cyclooxygenase inhibitor), nordihydroguaiaretic acid (lipoxygenase inhibitor), or icosatetraynoic acid (broad pathway inhibitor).
Treated pituitary cell cultures with various epoxygenated arachidonic acid metabolites to evaluate their direct capacity to stimulate luteinizing hormone release.
Icosatetraynoic acid at 10 µM completely inhibited stimulated luteinizing hormone secretion, whereas indomethacin had no effect and nordihydroguaiaretic acid produced only marginal inhibition.
Direct application of epoxygenated arachidonic acid metabolites stimulated luteinizing hormone secretion to levels equal to or greater than 10 nM luteinizing hormone-releasing hormone, with a half-maximal effective dose of approximately 50 nM.
5,6-epoxyicosatrienoic acid was identified as the most potent among all evaluated epoxygenated metabolites in inducing hormone secretion.

Cite This Study

Snyder et al. (1983) studied this question.

synapsesocial.com/papers/6a885bb08e586ad1c8a55374 https://doi.org/10.1073/pnas.80.11.3504

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Implication

In vitro study reveals that epoxygenated arachidonic acid metabolites mediate hormone secretion in pituitary cells, indicating a novel signaling pathway for luteinizing hormone release.

Action of luteinizing hormone-releasing hormone: involvement of novel arachidonic acid metabolites.

Discussion

Member takes

Implication

Key Points

Cite This Study

Action of luteinizing hormone-releasing hormone: involvement of novel arachidonic acid metabolites.

Discussion

Member takes

Implication

Key Points

Cite This Study

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