Distribution of estrogen receptor-immunoreactive cells in the sheep brain - PubMed (original) (raw)
Distribution of estrogen receptor-immunoreactive cells in the sheep brain
M N Lehman et al. Endocrinology. 1993 Aug.
Abstract
The distribution of immunoreactive (IR) estrogen receptor (ER)-containing cells was studied in the brains of adult Suffolk ewes using a rat monoclonal antibody (H222) which recognizes the human estrogen receptor. IR cells were characterized by dense nuclear reaction product, and in some instances, cytoplasmic immunostaining which filled dendrite-like processes. The greatest densities of ER-IR cells were found in the medial preoptic area, the mediobasal hypothalamus, and in a number of limbic system structures (amygdala, bed nucleus of the stria terminalis, lateral septum). ER-IR cells were found at lower densities in several other subregions of the hypothalamus and limbic system, and in the periaqueductal gray of the caudal midbrain. Cytoplasmic ER immunoreactivity was most prominent among ER-IR cells in the ventrolateral-ventromedial nucleus, the bed nucleus of the stria terminalis, the midbrain periaqueductal gray, and some ER-IR cells in the substantia innominata. The distribution of ER-containing cells in the sheep brain closely parallels that seen in other mammals. ER-IR cells are found in sites such as the medial preoptic area and ventrolateral-ventromedial hypothalamus which have been implicated as targets in this species and others for the influence of estradiol on sexual behavior and reproductive neuroendocrine function.
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