Comparative analysis of pharmacologic and/or genetic disruption of cyclooxygenase-1 and cyclooxygenase-2 function in female reproduction in mice.
Cyclooxygenase (COX)-derived prostaglandins are critical in female reproduction. Gene targeting studies show that ovulation, fertilization, implantation, and decidualization are defective in COX-2 deficient mice. We used genetic and pharmacologic approaches to perturb COX function and examine the differential and synergistic effects of inhibition of COX-1, COX-2, or of both isoforms on reproductive outcomes during early pregnancy in mice. The results demonstrate that simultaneous inhibition of COX-1 and COX-2 produces more severe effects on early pregnancy events than inhibition of either isoform alone. The effects of pharmacological inhibition of COX-2 on female reproductive functions were less severe than the null mutation of the COX-2 gene. A combined approach showed that COX-2 inhibition in COX-1(-/-) mice induced complete reproductive failure, suggesting a lack of alternative sources of prostaglandin synthesis. This investigation raises caution regarding the indiscriminate use of COX inhibitors and shows for the first time the distinct and overlapping pathways of the cyclooxygenase systems in female reproduction.
Reese
J
J
Department of Pediatrics, University of Kansas Medical Center, Ralph L. Smith Research Center, Kansas City, Kansas 66160-7338, USA.
Zhao
X
X
Ma
W G
WG
Brown
N
N
Maziasz
T J
TJ
Dey
S K
SK
D000818:Animals; D000068579:Celecoxib; D051545:Cyclooxygenase 1; D051546:Cyclooxygenase 2; D052246:Cyclooxygenase 2 Inhibitors; D016861:Cyclooxygenase Inhibitors / Q000494:pharmacology; D003656:Decidua / Q000187:drug effects / Q000502:physiology; D010064:Embryo Implantation / Q000502:physiology; D005260:Female; D007527:Isoenzymes / Q000037:antagonists & inhibitors / Q000235:genetics / Q000502:physiology*; D008565:Membrane Proteins; D051379:Mice; D018345:Mice, Knockout / Q000235:genetics; D010060:Ovulation / Q000187:drug effects; D011247:Pregnancy; D011451:Prostaglandin-Endoperoxide Synthases / Q000235:genetics / Q000502:physiology*; D011720:Pyrazoles; D012098:Reproduction / Q000502:physiology*; D013449:Sulfonamides / Q000494:pharmacology; D014599:Uterus / Q000187:drug effects / Q000502:physiology
D052246:Cyclooxygenase 2 Inhibitors; D016861:Cyclooxygenase Inhibitors; D007527:Isoenzymes; D008565:Membrane Proteins; D011720:Pyrazoles; D013449:Sulfonamides; D051545:Cyclooxygenase 1; D051546:Cyclooxygenase 2; D011451:Prostaglandin-Endoperoxide Synthases; C496512:Ptgs1 protein, mouse; D000068579:Celecoxib