Bose-dependent effects of meloxicam administration on cyclooxygenase-1 and cyclooxygenase-2 protein expression in intrauterine tissues and fetal tissues of a sheep model of preterm labor

作者：Rac Valeria E; Scott Catherine A; Small Charlene; Adamson S Lee; Rurak Dan; Challis John R; Lye Stephen J^*

来源：Reproductive Sciences, 2007, 14(8): 750-764.

DOI：10.1177/1933719107309042

• cyclooxygenase enzyme
• preterm labor
• pregnant sheep model
• meloxicam
• prostaglandins

Meloxicam (MEL), a cyclooxygenase (COX)-2 inhibitor, decreases prostaglandin. production and blocks preterm labor in sheep. The objective of this study is to investigate MEL dosage regimens on COX-1, COX-2, and prosteglandin dehydrogenase (PGDH) expression in ovine intrauterine and fetal tissues. Animals in preterm labor received maternal infusions of saline or MEL at maintained high or graded doses (stud), 1) or acute graded doses (stud), 2). MEL blocked preterm labor. In study 1, MEL decreased COX-2 expression in the endometrium, myometrium, and amnion, but not placenta or fetal tissues. In study 2, COX-2 expression was unchanged. COX-1/PGDH expression was unaffected. Mile MEL is an effective tocolytic, reductions in COX-2 protein occurred only with maintained MEL exposure. MEL effects are tissue specific and do not affect COX-1 or PGDH expression. Maternal. MEL does not affect fetal COX expression in the sheep, possibly contributing to its lack of fetal side effects.

• 出版日期2007-12
• 单位河北医科大学