Abstract
We compared the levels of functional activity of cells in each adrenal zone with blood levels of corticosterone, testosterone, and neuropeptide Y in control and hippocampectomized F1(C57BL/6×DBA/2) mice during modeling of metabolic, motivational, and cognitive tension. The morphofunctional state of the adrenal glands was studied using a new morphometric approach. It was found that hippocampectomy changed the testosterone response to neurobiological stimuli; similar changes were observed in the zona reticularis of the adrenal cortex producing dehydroepiandrosterone that is involved in the regulation of testosterone secretion. At the same time, hippocampectomy enhanced the response of the peptide hormone; the index of functional activity of chromaffin cells producing this hormone also increased. These findings allow us to put forward a hypothesis that the hippocampus is involved in the regulation of mutual influences of the studied hormones and that it modulates the sensitivity of testosterone and NPY to metabolic and cognitive factors.
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