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  • Title: Preoptic area estradiol-concentrating neurons project to the hypothalamus in female rats.
    Author: Corodimas KP, Morrell JI.
    Journal: Exp Brain Res; 1990; 80(2):381-6. PubMed ID: 2358051.
    Abstract:
    Estradiol (E2)-concentrating neurons afferent to the ventromedial nucleus of the hypothalamus (VMH) were identified by combining fluorescent retrograde tracing with steroid hormone autoradiography. The majority of E2-concentrating neurons that projected to the VMH were located in the medial preoptic area. In the entire medial preoptic area, 10.0% of the E2-sensitive neurons sent axons that terminated in the VMH. Twenty percent of the E2-concentrating neurons located in the periventricular preoptic area projected to the VMH. Of the E2-concentrating neurons found in the medial preoptic nucleus, 8.0% sent axons directly to the VMH. The bed nucleus of the stria terminalis, septum, and medial amygdala contained very few E2-receptive neurons that projected to the VMH. Preoptic area E2-concentrating neurons that project to the VMH may be part of a neural circuit that influences reproduction.
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