Development of aldosterone biosynthesis during fetal and pediatric periods; Histological analysis of CYP11B2-positive cell distribution in the zona glomerulosa of human adrenal.

The distribution of CYP11B2-positive or aldosterone producing adrenocortical cells in human fetuses and children and their age-dependent changes has not been studied. We aimed to explore the changes of aldosterone biosynthesis and age-related histological alterations of the zona glomerulosa in human adrenal gland during fetal and pediatric periods. We first reviewed 125 fetal and pediatric autopsy cases and retrieved 78 adrenals from 70 cases. CYP11B2 immunohistochemistry and quantitative image analysis of its results were performed in all adrenal glands. The ratio of the definitive zone (DZ) or zona glomerulosa (ZG) / the whole adrenocortical areas started to increase in the 2

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Declaration of Competing Interest The authors have declared no conflicts of interest.