Chemical structure of corticosteroids and its relationship with their acute induction of lordosis in the female rat

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⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-07-14 ⓘ

This study investigated the relationship between the chemical structure of corticosteroids and their ability to acutely induce lordosis behavior in female rats.

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Abstract

The intravenous injection of several corticosteroids in the spayed estrogen-primed rat resulted, 5 min later, in a remarkable induction of lordosis response for deoxycorticosterone and 11-deoxycortisol. A lower but important effect was induced with corticosterone and 17 alpha-hydroxyprogesterone. A chemical structure-biological effect analysis showed that C-21 hydroxylation (e.g., deoxycorticosterone, 11-deoxycortisol, and corticosterone) induces the behavioral effect. However, C-11 or C-17 hydroxylation alone promotes the lordosis response to a lesser degree (corticosterone and 17 alpha-hydroxyprogesterone, respectively). However, the effect of these latter compounds is significant. From the results, it is concluded that deoxycorticosterone and 11-deoxycortisol along with other steroids such as 20 alpha-hydroxyprogesterone are suitable candidates for synergizing the well-known estrogen-progesterone induction of lordotic behavior.

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MeSH descriptors

Adrenal Cortex Hormones Sexual Behavior, Animal Adrenal Cortex Hormones Adrenal Cortex Hormones Animals Computer Graphics Female Models, Molecular Molecular Conformation Progesterone Progesterone Rats Rats, Inbred Strains Sexual Behavior, Animal Structure-Activity Relationship

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openalex
last seen: 2026-06-10T17:14:06.276822+00:00
pubmed
last seen: 2026-10-08T21:10:37.302907+00:00
License: CC0 · commercial use OK