INVESTIGADORES
GALIGNIANA Mario Daniel
artículos
Título:
21-Hydroxy-6,19-oxidoprogesterone: a novel synthetic steroid with specific antiglucocorticoid properties in the rat
Autor/es:
VICENT GP, MONTESERÍN MC, VELEIRO AS, BURTON G, LANTOS CP, GALIGNIANA MD
Revista:
MOLECULAR PHARMACOLOGY
Editorial:
AMER SOC PHARMACOLOGY EXPERIMENTAL THERAPEUTICS
Referencias:
Año: 1997 vol. 52 p. 749 - 753
ISSN:
0026-895X
Resumen:
In the rat, the conformationally highly bent steroid 21-hydroxy-6,
19-oxidoprogesterone efficiently displaces [3H]corticosterone from
thymus-glucocorticoid receptors and blocks type II receptors in kidney
cytosols but competes with neither [3H]aldosterone for
kidney-mineralocorticoid receptors nor [3H]progesterone for
uterus-progesterone receptors. It evokes Na+ retention only at very high
doses (approximately 100 microg/100 g of rat weight) and is unable to
induce tyrosine aminotransferase or to increase glycogen deposits in rat
liver. When coincubated with corticosterone or dexamethasone, 2.5
microM 21OH-6OP inhibits 80% of tyrosine aminotransferase induction. It
may therefore be used experimentally as an antiglucocorticoid virtually
lacking mineralocorticoid or glucocorticoid properties as well as
affinity for mineralocorticoid or progesterone receptors.