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Biomedical subjects

L M Paziuk

Publications and source records attributed to L M Paziuk.

2 recordsLinked to original sources

[Effects of prostaglandins E2 and F2 alpha on the hypothalamo-hypophyseal-adrenal system and thyroid function in mice with Lewis lung carcinoma].

It has been determined that prostaglandins E2 and F2 alpha being exogenously inoculated during the premetastatic period to mice with metastatic Lewis lung carcinoma in equal degree activate neurocytes of supraoptic and paraventricular hypothalamus nuclei, playing the important role in secretion of peptidergic hypophysial adrenal gland complex, but they exert unequal influence on pituitary body, adrenal cortex and thyroid apparatus. F2 alpha stimulates the pituitary body corticotrophic function, secretory function of spongiocytes and thyrocytes, identifies the thyroxin and triiodothyronine utilization, E2, on the contrary, does not influence these indices or reduces them. Obviously, the mentioned above differences between E2 and F2 alpha may be explained by their different influences on antimetastatic resistance.

Animals↗

[The central catecholaminergic mechanisms regulating thyroid function in birds].

Response of the hypothalamo-hypophyseal-thyroid system of birds to drugs influencing brain catecholaminergic structures was analyzed by means of radioimmunoassay and morphometry. The 12-day- and 60-day-old cockerels were given dopamine precursor (L-DOPA), dopamine-blocking agent (haloperidole) and alpha-adrenoceptor activator (phenylephrine) during 7 days. The results obtained demonstrate that the brain catecholaminergic structures have participated in regulation of the hypothalamo-hypophyseal-thyroid system of birds. The dopaminergic structures have inhibited, the thyroid function while, alpha-adrenergic structures have stimulated it.

Adrenergic alpha-Agonists↗