Effect of sex on histological and histochemical structures of different parts of the kidney in Japanese quail

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Abstract

The aim of the present study was to investigate the effect of gender on the histological and histochemical structures of different anatomical regions of the kidney in Japanese quail (Coturnix japonica). Tissue samples from cranial, middle and caudal divisions of each kidney were obtained from 20 male and 20 female adult, healthy Japanese quail. The sections stained with hematoxylin & eosin (H & E), Masson's trichrome, Verhoeff's, Alcian blue (pH 2.5), Periodic acid-Schiff, and Gomori's method for reticulum. Unusual findings of the kidney in Japanese quail were the presence of three types of nephrons, all the connective tissue fibers in capsule and interlobular septa and AB-reactions of the proximal convoluted cells. No significant sex-based differences were found. The various histological structures of the kidney showed no significant differences among different divisions of the left and right kidneys. It is concluded that the general histological and histochemical properties of the kidney in Japanese quail were similar to those of chickens and some other species, but that there were also some differences. One of the major differences was brush border of interdigitating microvilli on luminal surface of collecting ducts in Japanese quail.

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