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Neurokinin B and nitric oxide plasma levels in pre‐eclampsia and isolated intrauterine growth restriction
Author(s) -
D'Anna Rosario,
Baviera Giovanni,
Corrado Francesco,
Crisafulli Alessandra,
Ientile Riccardo,
Buemi Michele,
Squadrito Francesco
Publication year - 2004
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/j.1471-0528.2004.00257.x
Subject(s) - nitric oxide , medicine , endocrinology , nitric oxide synthase , neurokinin b , umbilical vein , metabolite , chemistry , intrauterine growth restriction , gestation , biology , pregnancy , biochemistry , in vitro , neuropeptide , substance p , receptor , genetics
Objective To verify if neurokinin B plasma level is increased in pre‐eclampsia and IUGR. Also, to ascertain if there is a correlation between neurokinin B plasma level and nitric oxide production. Design A total of 90 pregnant women were studied. Thirty had a gestation complicated by pre‐eclampsia and 30 by isolated IUGR; the other 30 were controls. In all patients, neurokinin B plasma level and nitric oxide metabolites (nitrites/nitrates) level were measured. Setting University, General Hospital, Messina, Italy. Methods Neurokinin B blood samples were taken at 33.5 weeks of gestation and at term. Samples for nitric oxide breakdown products were taken at delivery from the antecubital vein and then from the umbilical vein. Results Neurokinin B plasma levels in the pre‐eclamptic and IUGR groups were significantly higher than controls. Nitric oxide metabolites levels in pre‐eclamptic and IUGR patients were also higher than controls. Regression analysis showed a significant correlation among neurokinin B plasma values and nitric oxide metabolite levels either in pre‐eclampsia, in IUGR or in the control group. Conclusion Neurokinin B could be involved in pregnancy haemodynamic adaptation via nitric oxide production. In pregnancies complicated with pre‐eclampsia and IUGR, increased neurokinin B plasma level, correlated well with increased nitric oxide metabolite level, which may be a compensatory mechanism to improve blood flow to the uteroplacental unit.