Effects of nitric oxide donors in vitro on the arachidonic acid-induced platelet release reaction and platelet cyclic GMP concentration in pre-eclampsia.
Clin Sci (Lond)
; 86(2): 195-202, 1994 Feb.
Article
em En
| MEDLINE
| ID: mdl-8143430
ABSTRACT
1. Platelet activation in vivo occurs in healthy pregnancy and is more pronounced in pre-eclampsia. 2. This study has investigated (i) the inhibitory potency of the nitric oxide donors 3-morpholinosydnonimine and sodium nitroprusside, on the platelet release reaction in vitro in non-pregnant, healthy pregnant and pre-eclamptic women; (ii) the concentration of cyclic GMP during incubation of washed platelets with sodium nitroprusside in a separate group of non-pregnant, healthy pregnant and pre-eclamptic women. 3. The half-maximal inhibitory concentration of sodium nitroprusside, in the presence of a phosphodiesterase inhibitor, for inhibition of the platelet release reaction was lower in the pre-eclamptic subjects than in the non-pregnant subjects (P < 0.05). 4. Several of the pre-eclamptic women were studied again postnatally. The half-maximal inhibitory concentrations of sodium nitroprusside and 3-morpholinosydnonimine were higher in the postnatal than in the antenatal sample (P < 0.02). 5. Peak platelet cyclic GMP responses to sodium nitroprusside were significantly higher in the pre-eclamptic women than in the healthy pregnant and non-pregnant women. 6. These results suggest that platelets are more sensitive to the inhibitory effects of nitric oxide donors in pre-eclampsia.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pré-Eclâmpsia
/
Plaquetas
/
Molsidomina
/
Nitroprussiato
/
Ativação Plaquetária
Limite:
Adolescent
/
Adult
/
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
Clin Sci (Lond)
Ano de publicação:
1994
Tipo de documento:
Article
País de afiliação:
Reino Unido