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Laboratory of Experimental Pathology (B.J.D., D.E.L.) and Laboratory of Environmental Carcinogenesis/Mutagenesis (C.A.L., H.F.T., R.L.), National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709; Myriad Genetics, Inc. (S.G.M.), Salt Lake City, Utah 84108; and the Department of Psychiatry and Behavioral Sciences, Duke University Medical Center (W.C.W.), Durham, North Carolina 27710
Address all correspondence and requests for reprints to: Dr. Barbara J. Davis, Laboratory of Experimental Pathology, National Institute of Environmental Health Sciences, Box 12233, Research Triangle Park, North Carolina 27709. E-mail: davis1{at}niehs.nih.gov
Mice carrying a null mutation for either of the two cyclooxygenase
(COX) isoenzymes, necessary for prostanoid production, exhibit several
isotype-specific reproductive abnormalities. Mice deficient in COX-1
are fertile but have decreased pup viability, whereas mice deficient in
COX-2 fail to ovulate and have abnormal implantation and
decidualization responses. The present study identifies the specific
contribution of each COX isoenzyme in hypothalamic, pituitary, and
ovarian function and establishes the pathology and rescue of the
anovulatory syndrome in the COX-2-deficient mouse. In both COX-1- and
COX-2-deficient mice, pituitary gonadotropins were selectively
increased, whereas hypothalamic LHRH and serum gonadotropin levels were
similar to those in wild-type animals (+/+). No significant differences
in serum estrogen or progesterone were noted among the three genotypes.
Exogenous gonadotropin stimulation with PMSG and hCG produced a
comparable 4-fold increase in ovarian PGE2 levels in
wild-type and COX-1-/- mice. COX-2-/- mice
had no increase in PGE2 over PMSG-stimulated levels.
Wild-type and COX-1-/- mice ovulated in response to
PMSG/hCG; very few COX-2-/- animals responded to this
regimen. The defect in ovulation in COX-2 mutants was attributed to
both an abnormal cumulus oophorum expansion and subsequent stigmata
formation. Gonadotropin stimulation and concurrent treatment with
PGE2 or interleukin-1ß resulted in ovulation of
COX-2-/- mice comparable to that in COX-2+/+,
whereas treatment with PGF2
was less effective.
Collectively, these data demonstrate that COX-2, but not COX-1, is
required for the gonadotropin induction of ovarian PG levels; that
COX-2-related prostanoids are required for stabilization of the
cumulus oophorum during ovulation; and that ovulation can be restored
in the COX-2-/- animals by simultaneous treatment with
gonadotropins and PGE2 or interleukin-1ß.
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L. L. Espey and J. S. Richards Temporal and Spatial Patterns of Ovarian Gene Transcription Following an Ovulatory Dose of Gonadotropin in the Rat Biol Reprod, December 1, 2002; 67(6): 1662 - 1670. [Abstract] [Full Text] [PDF] |
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D. M. Duffy and R. L. Stouffer Follicular administration of a cyclooxygenase inhibitor can prevent oocyte release without alteration of normal luteal function in rhesus monkeys Hum. Reprod., November 1, 2002; 17(11): 2825 - 2831. [Abstract] [Full Text] [PDF] |
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F. Gaytan, E. Tarradas, C. Bellido, C. Morales, and J. E. Sanchez-Criado Prostaglandin E1 Inhibits Abnormal Follicle Rupture and Restores Ovulation in Indomethacin-Treated Rats Biol Reprod, October 1, 2002; 67(4): 1140 - 1147. [Abstract] [Full Text] [PDF] |
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L. Koumas and R. P. Phipps Differential COX localization and PG release in Thy-1+ and Thy-1- human female reproductive tract fibroblasts Am J Physiol Cell Physiol, August 1, 2002; 283(2): C599 - C608. [Abstract] [Full Text] [PDF] |
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S. Varani, J. A. Elvin, C. Yan, J. DeMayo, F. J. DeMayo, H. F. Horton, M. C. Byrne, and M. M. Matzuk Knockout of Pentraxin 3, a Downstream Target of Growth Differentiation Factor-9, Causes Female Subfertility Mol. Endocrinol., June 1, 2002; 16(6): 1154 - 1167. [Abstract] [Full Text] [PDF] |
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Y.-L. Wu and M. C. Wiltbank Transcriptional Regulation of the Cyclooxygenase-2 Gene Changes from Protein Kinase (PK) A- to PKC-Dependence after Luteinization of Granulosa Cells Biol Reprod, May 1, 2002; 66(5): 1505 - 1514. [Abstract] [Full Text] |
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C. G Egan, J. C Lockhart, W. R Ferrell, S. M Day, and J. S McLean Pathophysiological basis of acute inflammatory hyperaemia in the rat knee: roles of cyclo-oxygenase-1 and -2 J. Physiol., March 1, 2002; 539(2): 579 - 587. [Abstract] [Full Text] [PDF] |
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B. Hinz and K. Brune Cyclooxygenase-2---10 Years Later J. Pharmacol. Exp. Ther., February 1, 2002; 300(2): 367 - 375. [Abstract] [Full Text] [PDF] |
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J. S. Richards, D. L. Russell, S. Ochsner, M. Hsieh, K. H. Doyle, A. E. Falender, Y. K. Lo, and S. C. Sharma Novel Signaling Pathways That Control Ovarian Follicular Development, Ovulation, and Luteinization Recent Prog. Horm. Res., January 1, 2002; 57(1): 195 - 220. [Abstract] [Full Text] [PDF] |
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D. M. Duffy and R. L. Stouffer The ovulatory gonadotrophin surge stimulates cyclooxygenase expression and prostaglandin production by the monkey follicle Mol. Hum. Reprod., August 1, 2001; 7(8): 731 - 739. [Abstract] [Full Text] [PDF] |
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I. M. Joyce, F. L. Pendola, M. O'Brien, and J. J. Eppig Regulation of Prostaglandin-Endoperoxide Synthase 2 Messenger Ribonucleic Acid Expression in Mouse Granulosa Cells during Ovulation Endocrinology, July 1, 2001; 142(7): 3187 - 3197. [Abstract] [Full Text] [PDF] |
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J. Reese, X. Zhao, W.-G. Ma, N. Brown, T. J. Maziasz, and S. K. Dey Comparative Analysis of Pharmacologic and/or Genetic Disruption of Cyclooxygenase-1 and Cyclooxygenase-2 Function in Female Reproduction in Mice Endocrinology, July 1, 2001; 142(7): 3198 - 3206. [Abstract] [Full Text] [PDF] |
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M. D. Calder, A. N. Caveney, M. E. Westhusin, and A. J. Watson Cyclooxygenase-2 and Prostaglandin E2(PGE2) Receptor Messenger RNAs Are Affected by Bovine Oocyte Maturation Time and Cumulus-Oocyte Complex Quality, and PGE2 Induces Moderate Expansion of the Bovine Cumulus In Vitro Biol Reprod, July 1, 2001; 65(1): 135 - 140. [Abstract] [Full Text] [PDF] |
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J. S. Richards Perspective: The Ovarian Follicle--A Perspective in 2001 Endocrinology, June 1, 2001; 142(6): 2184 - 2193. [Full Text] [PDF] |
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H. Matsumoto, W.-g. Ma, W. Smalley, J. Trzaskos, R. M. Breyer, and S. K. Dey Diversification of Cyclooxygenase-2-Derived Prostaglandins in Ovulation and Implantation Biol Reprod, May 1, 2001; 64(5): 1557 - 1565. [Abstract] [Full Text] |
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C. D. Loftin, D. B. Trivedi, H. F. Tiano, J. A. Clark, C. A. Lee, J. A. Epstein, S. G. Morham, M. D. Breyer, M. Nguyen, B. M. Hawkins, et al. Failure of ductus arteriosus closure and remodeling in neonatal mice deficient in cyclooxygenase-1 and cyclooxygenase-2 PNAS, January 23, 2001; (2001) 31573498. [Abstract] [Full Text] |
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G. A. Dissen, J. A. Parrott, M. K. Skinner, D. F. Hill, M. E. Costa, and S. R. Ojeda Direct Effects of Nerve Growth Factor on Thecal Cells from Antral Ovarian Follicles Endocrinology, December 1, 2000; 141(12): 4736 - 4750. [Abstract] [Full Text] [PDF] |
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A. Kirschenbaum, D. R. Liotta, S. Yao, X.-H. Liu, A. P. Klausner, P. Unger, E. Shapiro, I. Leav, and A. C. Levine Immunohistochemical Localization of Cyclooxygenase-1 and Cyclooxygenase-2 in the Human Fetal and Adult Male Reproductive Tracts J. Clin. Endocrinol. Metab., September 1, 2000; 85(9): 3436 - 3441. [Abstract] [Full Text] |
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T.-L. Erkinheimo, K. Saukkonen, K. Narko, J. Jalkanen, O. Ylikorkala, and A. Ristimäki Expression of Cyclooxygenase-2 and Prostanoid Receptors by Human Myometrium J. Clin. Endocrinol. Metab., September 1, 2000; 85(9): 3468 - 3475. [Abstract] [Full Text] |
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F. Filion, N. Bouchard, A. K. Goff, J. G. Lussier, and J. Sirois Molecular Cloning and Induction of Bovine Prostaglandin E Synthase by Gonadotropins in Ovarian Follicles Prior to Ovulation in Vivo J. Biol. Chem., August 31, 2001; 276(36): 34323 - 34330. [Abstract] [Full Text] [PDF] |
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C. D. Loftin, D. B. Trivedi, H. F. Tiano, J. A. Clark, C. A. Lee, J. A. Epstein, S. G. Morham, M. D. Breyer, M. Nguyen, B. M. Hawkins, et al. Failure of ductus arteriosus closure and remodeling in neonatal mice deficient in cyclooxygenase-1 and cyclooxygenase-2 PNAS, January 30, 2001; 98(3): 1059 - 1064. [Abstract] [Full Text] [PDF] |
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J. A. Elvin, C. Yan, and M. M. Matzuk Growth differentiation factor-9 stimulates progesterone synthesis in granulosa cells via a prostaglandin E2/EP2 receptor pathway PNAS, August 29, 2000; 97(18): 10288 - 10293. [Abstract] [Full Text] [PDF] |
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C. G. Egan, J. C. Lockhart, W. R. Ferrell, S. M. Day, and J. S. McLean Pathophysiological basis of acute inflammatory hyperaemia in the rat knee: roles of cyclo-oxygenase-1 and -2 J. Physiol., January 25, 2002; (2002) 200101347. [Abstract] [PDF] |
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