Suppression of spontaneous LH surges in estrogen-treated ovariectomized rats by microimplants of antiestrogens into the preoptic brain
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Estrogens and the circadian system
2022, Seminars in Cell and Developmental BiologyCitation Excerpt :Fifth, kisspeptin neurons are estrogen-responsive and express ERα, which is necessary for the LH surge [88]. Elevated estrogens, via ERα, increased kisspeptin expression in the AVPV, and antiestrogen treatment in the medial preoptic area blocked LH surges [106,107]. Finally, kisspeptin signaling is necessary and sufficient for the LH surge [108–110].
Epigenetic impacts of endocrine disruptors in the brain
2017, Frontiers in NeuroendocrinologyProgesterone-induced amplification and advancement of GnRH/LH surges are associated with changes in kisspeptin system in preoptic area of estradiol-primed female rats
2016, Brain ResearchCitation Excerpt :It has been shown that kisspeptin and its receptor (GPR54) play an important stimulatory role in the GnRH secretion (Han et al., 2005; Messager et al., 2005; Gottsch et al., 2004). In rodents, two principal populations of kisspeptin neurons are described; the major population of these neurons is located in the anteroventral periventricular region (AVPV) of POA (Smith et al., 2005a, 2005b), which is the main site of estradiol-positive action (Goodman, 1978; Petersen and Barraclough, 1989). Kisspeptin neurons in the AVPV express both estrogen receptor alpha and progesterone receptor (Clarkson et al., 2008) and project directly to GnRH neurons, which express GPR54 (Han et al., 2005).