Biomedical subjects
Publications and source records attributed to R I Kovalenko.
Functional activity of hypothalamic structures was studied in endocrinological and electrophysiological experiments as well as in vitro studies. Functional changes of limbic-hypothalamic relations and control mechanisms of gonadotropin secretion under the effect of pineal polypeptides and in relation to lactation, were analysed.
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Single injection of hypothalamic nonapeptidae do not affect ovulation although they inhibit endocrine and reproductive functions of the hypothalamo-hypophyseal-ovarial system in hens. Repetitive injections of nonapeptides, on the contrary, enhance reproductive processes. This effect is due to the structure of the cyclic part of neurohormonal molecule.
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