Abstract
Nitric oxide (NO) is a major paracrine mediator and important regulatory agent in various female reproductive processes, such as ovulation, implantation, pregnancy maintenance, labor and delivery. Ovulation: Circulating NOproducts are increased during follicle development and decreased right after ovulation. INOS-inhibition results in a 50% reduction of ovulation, an effect completely reversed by an NO. Endometrium / Implantation: NO also regulates endometrial functions such as endometrial receptivity, implantation and menstruation. NO-donors may be useful for promoting fertility, while NO-inhibitors might be used for contraception. Uterine contractility: Throughout gestation myometrial NO-production is upregulated thus contributing to achieve uterine quiescence. Close to term, NO-production decreases promoting effective contractions resulting in labor. Clinical trials have demonstrated that NO-donors are effective tocolytics. Cervical ripening: In contrast to the myometrium, NO-production in the cervix is low during gestation and becomes upregulated once pregnancy advances to term. NO-donors are effective and safe cervical ripening agents. This finding from animal studies has been confirmed by several clinical trials. Vasoreactivity: In blood vessels, NO is a potent vasodilator and platelet-aggregation-inhibitor. Lack of NO during gestation was related to the development of pregnancy-induced hypertension and preeclampsia. In conclusion, NO-donors and NOS-inhibitors may provide novel, effective, safe, and inexpensive drugs to regulate and steer various functions in female reproductive life. The benefits reach from contraception to preventing possibly lethal pregnancy complications such as preeclampsia. Introducing NOdonors as tocolytics and cervical ripening agents may contribute to a reduction of fetal and maternal perinatal morbidity and mortality.
Keywords: nitric oxide, paracrine mediator, ovulation, uterine contraction, nitric oxide synthase, nos, no synthases, no
Current Pharmaceutical Design
Title: Nitric Oxide and its Role During Pregnancy: From Ovulation to Delivery
Volume: 9 Issue: 5
Author(s): H. Maul, M. Longo, G. R. Saade and R. E. Garfield
Affiliation:
Keywords: nitric oxide, paracrine mediator, ovulation, uterine contraction, nitric oxide synthase, nos, no synthases, no
Abstract: Nitric oxide (NO) is a major paracrine mediator and important regulatory agent in various female reproductive processes, such as ovulation, implantation, pregnancy maintenance, labor and delivery. Ovulation: Circulating NOproducts are increased during follicle development and decreased right after ovulation. INOS-inhibition results in a 50% reduction of ovulation, an effect completely reversed by an NO. Endometrium / Implantation: NO also regulates endometrial functions such as endometrial receptivity, implantation and menstruation. NO-donors may be useful for promoting fertility, while NO-inhibitors might be used for contraception. Uterine contractility: Throughout gestation myometrial NO-production is upregulated thus contributing to achieve uterine quiescence. Close to term, NO-production decreases promoting effective contractions resulting in labor. Clinical trials have demonstrated that NO-donors are effective tocolytics. Cervical ripening: In contrast to the myometrium, NO-production in the cervix is low during gestation and becomes upregulated once pregnancy advances to term. NO-donors are effective and safe cervical ripening agents. This finding from animal studies has been confirmed by several clinical trials. Vasoreactivity: In blood vessels, NO is a potent vasodilator and platelet-aggregation-inhibitor. Lack of NO during gestation was related to the development of pregnancy-induced hypertension and preeclampsia. In conclusion, NO-donors and NOS-inhibitors may provide novel, effective, safe, and inexpensive drugs to regulate and steer various functions in female reproductive life. The benefits reach from contraception to preventing possibly lethal pregnancy complications such as preeclampsia. Introducing NOdonors as tocolytics and cervical ripening agents may contribute to a reduction of fetal and maternal perinatal morbidity and mortality.
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Cite this article as:
Maul H., Longo M., Saade R. G. and Garfield E. R., Nitric Oxide and its Role During Pregnancy: From Ovulation to Delivery, Current Pharmaceutical Design 2003; 9 (5) . https://dx.doi.org/10.2174/1381612033391784
DOI https://dx.doi.org/10.2174/1381612033391784 |
Print ISSN 1381-6128 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4286 |
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