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Cyclooxygenase inhibitors for treating preterm labour: What is the molecular evidence?

Canadian Journal of Physiology and Pharmacology, ISSN: 1205-7541, Vol: 97, Issue: 3, Page: 222-231
2019
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Review Description

Preterm birth (<37 weeks of gestation) significantly increases the risk of neonatal mortality and morbidity. As many as half of all preterm births occur following spontaneous preterm labour. Since in such cases there are no known reasons for the initiation of labour, treatment of preterm labour (tocolysis) has sought to stop labour contractions and delay delivery. Despite some success, the use of cyclooxygenase (COX) inhibitors is associated with maternal/fetal side effects, and possibly increased risk of preterm birth. Clinical use of these drugs predates the collection of molecular and biochemical evidence in vitro, examining the expression and activity of COX enzymes in pregnant uterine tissues with and without labour. Such evidence is important to the rationale that COX enzymes are, or are not, appropriate targets for the tocolysis. The current study systematically searched existing scientific evidence to address the hypothesis that COX expression/activity is increased with the onset of human labour, in an effort to determine whether there is a rationale for the use of COX inhibitors as tocolytics. Our review identified 44 studies, but determined that there is insufficient evidence to support or refute a role of COX-1/-2 in the onset of preterm labour that supports COX-targeted tocolysis.

Bibliographic Details

Urrego, Daniela; Liwa, Anthony C; Cole, William C; Wood, Stephen L; Slater, Donna M

Canadian Science Publishing

Biochemistry, Genetics and Molecular Biology; Pharmacology, Toxicology and Pharmaceutics; Medicine

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