doi: 10.1016/0196-9781(88)90102-7.
Effects of substance P on the rat adrenal zona glomerulosa in vivo
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- PMID: 2469063
- DOI: 10.1016/0196-9781(88)90102-7
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Effects of substance P on the rat adrenal zona glomerulosa in vivo
Peptides.
1988 Sep-Oct.
Abstract
Substance P (SP) acutely enhanced the plasma concentration of aldosterone in rats whose hypothalamo-hypophyseal-adrenal axis and renin-angiotensin system were pharmacologically interrupted. The maximal response was obtained with a dose of 100 micrograms/kg. A prolonged (7 days) subcutaneous infusion with SP (50 micrograms/kg/hr) caused a notable hypertrophy of zona glomerulosa cells associated with significant rises in both basal and angiotensin-stimulated plasma levels of aldosterone. Zona fasciculata and the blood concentration of corticosterone were not affected. These findings suggest that SP is specifically involved in the stimulation of the growth and secretory activity of the rat zona glomerulosa.
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