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J Neuroendocrinol. 1995 Sep;7(9):713-9.

Distribution of androgen receptor-like immunoreactivity in the brains of cynomolgus monkeys.

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  • 1Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, Georgia, USA.


A polyclonal antibody, PA1, raised in a rabbit against fusion proteins containing fragments of the human prostatic androgen receptor (AR) was used to map the distribution of AR-like immunoreactivity in the brains of adult male and female cynomolgus monkeys. PA1 AR-immunoreactive (ARir) labeling occurred in the cell nuclei and, more weakly, in the cytoplasm of brain cells. The PA1 ARir labeling occurred primarily in brain regions previously shown on the basis of gonadal steroid autoradiography to contain androgen receptors. However, the distribution of PA1 ARir staining was substantially more restricted than that of autoradiographic labeling using 3H-androgens. The pattern of PA1 ARir labeling was closely similar between animals and occurred in the lateral septum, medial preoptic area, bed nucleus of stria terminalis, anterior, cortical, accessory basal and medial amygdala, several hypothalamic nuclei including the supraoptic, anterior, paraventricular, ventromedial and arcuate nuclei, and the premammillary nucleus. No significant sex differences were observed. With the exception of the supraoptic nucleus, reported not to be labeled by autoradiography, earlier autoradiographic findings and the current immunocytochemical results, although not congruent, have noteworthy similarities.

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