| Effect of estrus induction on prostaglandin content and prostaglandin synthesis enzyme expression in the uterus of early pregnant pigs. | |
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MedLine Citation:
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PMID: 20171718 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Prostaglandins (PGs) play a pivotal role in maternal recognition of pregnancy and implantation in pigs. In the present study, PGE(2), PGF(2alpha), and PGFM (PGF(2alpha) metabolite) content, as well as PGE(2) synthase (mPGES-1) and PGF(2alpha) synthase (PGFS) expression was investigated in early pregnant gilts with natural (n=21) and PMSG/hCG-stimulated (n=19) estrus. Endometrial tissue samples, uterine luminal flushings (ULFs), and blood serum were collected on days 10-11, 12, and 15 after insemination. Additionally, day 15 conceptuses were collected for mPGES-1 and PGFS protein expression. Effect of estrus induction was observed on day 15 of pregnancy, when the content of PGE(2) in the uterine lumen was fourfold lower in gonadotropin-stimulated gilts in comparison to controls (P<0.001). Decreased PGE(2) content in ULFs of gonadotropin-treated pigs was preceded by lower endometrial mPGES-1 gene expression in hormonally-stimulated animals in comparison to control gilts (P<0.01). On the other hand, estrus induction with PMSG/hCG resulted in higher PGE(2) accumulation in the endometrial tissue on day 15 of pregnancy (P<0.01). Furthermore, PGF(2alpha) content in the endometrium and PGFM levels in blood serum were lower in gonadotropin-treated gilts, especially on day 12 after insemination when compared to control gilts (P<0.01). Finally, PGFS expression in day 15 conceptuses was decreased in animals with hormonally-induced estrus. We conclude that PMSG/hCG stimulation of prepubertal gilts to induce estrus results in changes of PG production and secretion during early pregnancy, which, in turn, may affect conceptus development, implantation, and the course of pregnancy. |
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Authors:
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A Blitek; A Waclawik; M M Kaczmarek; J Kiewisz; A J Ziecik |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-02-19 |
Journal Detail:
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Title: Theriogenology Volume: 73 ISSN: 1879-3231 ISO Abbreviation: Theriogenology Publication Date: 2010 Jun |
Date Detail:
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Created Date: 2010-05-10 Completed Date: 2010-08-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0421510 Medline TA: Theriogenology Country: United States |
Other Details:
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Languages: eng Pagination: 1244-56 Citation Subset: IM |
Copyright Information:
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2010 Elsevier Inc. All rights reserved. |
Affiliation:
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Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima 10, 10-747 Olsztyn, Poland. a.blitek@pan.olsztyn.pl |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Chorionic Gonadotropin / administration & dosage Dinoprost / analogs & derivatives, analysis, blood Dinoprostone / analysis Endometrium / anatomy & histology, chemistry, enzymology Estrus Estrus Synchronization Female Gene Expression Gonadotropins, Equine / administration & dosage Hydroxyprostaglandin Dehydrogenases / genetics* Immunoenzyme Techniques Intramolecular Oxidoreductases / genetics* Organ Size Ovulation Induction / adverse effects, methods, veterinary* Polymerase Chain Reaction Pregnancy Prostaglandins / analysis*, biosynthesis RNA, Messenger / analysis Swine / metabolism* Uterus / anatomy & histology, chemistry*, enzymology |
| Chemical | |
Reg. No./Substance:
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0/Chorionic Gonadotropin; 0/Gonadotropins, Equine; 0/Prostaglandins; 0/RNA, Messenger; 27376-76-7/15-keto-13,14-dihydroprostaglandin F2alpha; 363-24-6/Dinoprostone; 551-11-1/Dinoprost; EC 1.1.1.-/Hydroxyprostaglandin Dehydrogenases; EC 1.1.1.188/prostaglandin-F synthase; EC 5.3.-/Intramolecular Oxidoreductases; EC 5.3.99.3/prostaglandin-E synthase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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