Immunolocalization of Androgen Receptor in the Cloacal Gland of Male Japanese Quail(Coturnix coturnix japonica).

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The present study was designed to localize androgen receptor in the cloacal gland of the male Japanese quail by immunohistochemical method. Frozen sections of the cloacal tissue were immunostained using a polyclonal antibody to human androgen receptor. In 15 days old male quail embryos, 20 and 80 days old birds, the positive immunoreaction for androgen receptor was observed in the nuclei of glandular cells and dorsal proctodeal epithelial cells. The intensity of immunoreactive staining in the glandular cells was higher in 80 days old birds than the others. The structure of the cloacal gland was much well developed in testosterone-treated 6-day-old males than in vehicle treated ones. In both testosterone-treated and vehicle treated immature quails, positive immunoreaction was observed in the glandular cells and dorsal proctodeal epithelium. These results suggest that androgens induce the development of cloacal gland and doral proctodeal epithelium and also enhance the secretory activity of cloacal gland in an androgen receptor mediated manner.
日本家禽学会の論文