[The ultrastructural aspects of the stress-limiting action of a pulsed electrical current on the hypothalamic neuronal subpopulations that initiate the body's stress reactions].

Electron-microscopic investigations of neuron subpopulations in paraventricular nuclei of rat hypothalamus demonstrated ultrastructural positive changes due to exposure of the stressed animals to impulse electric current (IEC). The latter is able to control synthesis and secretion of stress-releasing-hormones produced by neurons of hypothalamic medial small-cell and posterior large-cell subnuclei. There were indications of deposition of stress-initiating hormones in neuron bodies evidencing stress-limiting effect of IEC. There were also signs of elevated resistance of ultrastructures, endoplasmic reticulum, in particular, to stress-related damage.