Calcium channel blockers and prostaglandin generation by gastric surface epithelial cells.
Prostaglandins
; 42(6): 587-97, 1991 Dec.
Article
en En
| MEDLINE
| ID: mdl-1801066
ABSTRACT
We investigated the effects of calcium channel blockers on generation of prostaglandin (PG) E2 and 6-keto PGF1 alpha by gastric mucosal surface epithelium. Surface epithelial cells (SEC) isolated from rat gastric mucosa were incubated with either verapamil (1 or 10 micrograms/ml), diltiazem (2.5 or 25 micrograms/ml) or nifedipine (2.5 or 25 micrograms/ml) for 30 min at 37 degrees C in calcium containing or calcium-free medium. Verapamil (both doses) significantly increased PGE2 and 6-keto PGF1 alpha generation by the surface epithelial cells but only in calcium containing medium. Diltiazem did not affect PG generation in calcium containing nor calcium-free medium. Nifedipine 25 micrograms/ml decreased PGE2 but increased 6-keto PGF1 alpha generation. The inhibitory effect of nifedipine on PGE2 generation was abolished in calcium-free medium, while the calmodulin antagonist did not affect verapamil-induced increase in PG generation.
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Banco de datos:
MEDLINE
Asunto principal:
Bloqueadores de los Canales de Calcio
/
6-Cetoprostaglandina F1 alfa
/
Dinoprostona
/
Mucosa Gástrica
Límite:
Animals
Idioma:
En
Año:
1991
Tipo del documento:
Article