Modulation by N-stearoylethanolamine of K+ and Mitotane Effects on Steroid Hormones Labeling in Human Adrenocortical Tissue.

Accession number;02A0174530
Title;Modulation by N-stearoylethanolamine of K+ and Mitotane Effects on Steroid Hormones Labeling in Human Adrenocortical Tissue.
Author; PUSHKAREV V (Inst. Endocrinology And Metabolism, Kiev, Ukr) TRONKO N (Inst. Endocrinology And Metabolism, Kiev, Ukr) KOSTYUCHENKO N (Inst. Endocrinology And Metabolism, Kiev, Ukr) KOVALENKO A (Inst. Endocrinology And Metabolism, Kiev, Ukr) MIKOSHA A (Inst. Endocrinology And Metabolism, Kiev, Ukr)
Journal Title;Biomed Res
Journal Code:Z0236B
ISSN:0388-6107
VOL.22;NO.4;PAGE.191-195(2001)
Figure&Table&Reference;FIG.2, REF.26
Pub. Country;Japan
Language;English
Abstract;N-Acylethanolamine derivatives have attracted considerable attention of investigators owing to their effects on membrane processes. We studied the effect of stearoylethanolamine, NAE-18:0, upon the rate of [3H]-cholesterol label incorporation into steroid hormones. We have evaluated the modulating effect of NAE-18:0 on corticosteroids labeling in the slices of conventionally normal tissue of human adrenals. The adrenal specimens were obtained from 3 patients undergoing routine adrenalectomy for unsuccessfully treated Cushing's disease or aldosteroma and androsteroma. The label incorporation varied widely in the three used samples of tissue. [3H]-cholesterol label incorporation was increased when K+ concentration in the incubation medium rose from 3.5 to 8.5 mM. NAE-18:0 further enhanced aldosterone labeling. Mitotane which is used for therapy of cortical carcinoma inhibited aldosterone labeling. NAE-18:0 attenuated the inhibitory effect of mitotane. NAE18:0 effect on corticosterone labeling was similar but less pronounced. The labeling of 17-hydroxy-hormones under the influence of NAE-18:0 changed to a lesser extent. The membranotropic mechanisms of NAE-18:0 and mitotane action are discussed. (author abst.)
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