Progestin Concentrations Are Increased following Paced Mating in Midbrain, Hippocampus, Diencephalon, and Cortex of Rats in Behavioral Estrus, but Only in Midbrain of Diestrous Rats | Zendy

Cheryl A. Frye | Zendy; Madeline E. Rhodes | Zendy

Open Access

Progestin Concentrations Are Increased following Paced Mating in Midbrain, Hippocampus, Diencephalon, and Cortex of Rats in Behavioral Estrus, but Only in Midbrain of Diestrous Rats

Author(s) -

Cheryl A. Frye,

Madeline E. Rhodes

Publication year - 2006

Publication title -

neuroendocrinology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.493

H-Index - 101

eISSN - 1423-0194

pISSN - 0028-3835

DOI - 10.1159/000096051

Subject(s) - midbrain , diencephalon , estrous cycle , endocrinology , medicine , hippocampus , mating , neuroscience , hypothalamus , central nervous system , biology , ecology

The progesterone (P(4)) metabolite, 5alpha-pregnan-3alpha-ol-20-one (3alpha,5alpha-THP), acts in the midbrain ventral tegmental area (VTA) to modulate the intensity and duration of lordosis. 3alpha,5alpha-THP can also have anti-anxiety and anti-stress effects in part through actions in the hippocampus. Separate reports indicate that manipulating 3alpha,5alpha-THP levels in the VTA or hippocampus respectively can influence lordosis and affective behavior. 3alpha,5alpha-THP levels can also be altered by behavioral experiences, such as mating or swim stress. Whether endogenous levels of 3alpha,5alpha-THP modulate and/or are increased in response to affective and/or reproductively-relevant behaviors was investigated.

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