Data on the morphometric parameters of the renal corpuscle, renal tubules, and collecting ducts of male and female nutrias in postnatal ontogenesis were obtained. It was found that the area of the renal corpuscle, glomerulus, the cavity and lumen of the capsule, and the proximal tubule diameter in the right and left kidney of female and male nutrias in the first year of life increase. The distal tubule diameter also increases; however, the dynamics of its changes becomes sinuous after 4.5 months. The collecting duct diameter varies depending on gender, age, and renal topography. The nuclear-cytoplasmic ratio in the cells of proximal and distal tubules and collecting ducts changes in a sinuous manner and depends on the gender and age of nutrias. The minimum mean value of the nuclear-cytoplasmic ratio was found in the proximal tubule cells in the left kidney of 12-month-old female nutrias (0.162 ± 0.002), and the maximum value was found in the distal tubule cells in the left kidney of newborn male nutrias (0.435 ± 0.007).
Russian Journal of Developmental Biology – Springer Journals
Published: Nov 12, 2014
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