PMID- 9322976 OWN - NLM STAT- MEDLINE DCOM- 19971023 LR - 20131121 IS - 0013-7227 (Print) IS - 0013-7227 (Linking) VI - 138 IP - 10 DP - 1997 Oct TI - Hormonal regulation of monocyte chemoattractant protein-1 messenger ribonucleic acid expression in corpora lutea. PG - 4517-20 AB - Monocyte chemoattractant protein-1 (MCP-1) is a potent chemokine that attracts monocytes and macrophages. It is known that macrophages accumulate in the corpus luteum (CL) during luteal regression in many species. In this study, we investigated the regulation of MCP-1 mRNA in ovine and bovine CL during prostaglandin (PG) F2alpha-induced luteolysis, after LH treatment, or after pharmacologic activation of the protein kinase (PK) A or PKC intracellular effector systems. In experiment 1, ewes on day 11 or 12 of the estrous cycle were infused with saline or PGF2alpha. PGF2alpha increased MCP-1 mRNA at 1 and 4 h after treatment. MCP-1 mRNA returned to basal level at 12 h and increased again at 24 h post treatment. In experiment 2, ewes received saline, PGF2alpha, phorbol 12-myristate 13-acetate (PMA), luteinizing hormone (LH), or forskolin infusion and CL were collected at 0 (untreated), 4, 12, or 24 h after infusion. Similar to experiment 1, PGF2alpha induced MCP-1 mRNA at 4 and 24 h post treatment. PMA increased mRNA for MCP-1 at 4, 12, and 24 h. Treatment with LH or forskolin transiently decreased MCP-1 mRNA expression. In experiment 3, cows were treated with a luteolytic dose (25 mg) of PGF2alpha on day 4 or day 11 of estrous cycle and expression of MCP-1 mRNA was quantified. Steady-state concentrations of mRNA for MCP-1 were induced by PGF2alpha treatment only in mid-cycle CL but not in early CL. In summary, administration of PGF2alpha or activation of PKC induced MCP-1 mRNA expression. Expression of MCP-1 may be important for stimulating immune processes during luteal regression. FAU - Tsai, S J AU - Tsai SJ AD - Endocrinology-Reproductive Physiology Program and Dairy Science Department, University of Wisconsin-Madison, 53706, USA. FAU - Juengel, J L AU - Juengel JL FAU - Wiltbank, M C AU - Wiltbank MC LA - eng GR - HD-11590/HD/NICHD NIH HHS/United States GR - HD-32623/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Endocrinology JT - Endocrinology JID - 0375040 RN - 0 (Chemokine CCL2) RN - 0 (DNA Primers) RN - 0 (RNA, Messenger) RN - 1F7A44V6OU (Colforsin) RN - 9002-62-4 (Prolactin) RN - 9002-67-9 (Luteinizing Hormone) RN - 9007-49-2 (DNA) RN - B7IN85G1HY (Dinoprost) RN - EC 2.7.11.11 (Cyclic AMP-Dependent Protein Kinases) RN - EC 2.7.11.13 (Protein Kinase C) RN - NI40JAQ945 (Tetradecanoylphorbol Acetate) SB - IM MH - Animals MH - Base Sequence MH - Cattle MH - Chemokine CCL2/analysis/*genetics/metabolism MH - Colforsin/pharmacology MH - Corpus Luteum/chemistry/*metabolism MH - Cyclic AMP-Dependent Protein Kinases/metabolism/physiology MH - DNA/analysis/chemistry/genetics MH - DNA Primers/analysis/chemistry/genetics MH - Dinoprost/*pharmacology MH - Dose-Response Relationship, Drug MH - Enzyme Activation/drug effects MH - Female MH - Linear Models MH - Luteinizing Hormone/*pharmacology MH - Luteolysis/physiology MH - Ovulation/physiology MH - Polymerase Chain Reaction MH - Prolactin/*pharmacology MH - Protein Kinase C/metabolism/physiology MH - RNA, Messenger/*analysis/chemistry/genetics MH - Sheep MH - Tetradecanoylphorbol Acetate/pharmacology MH - Time Factors EDAT- 1997/10/10 00:00 MHDA- 1997/10/10 00:01 CRDT- 1997/10/10 00:00 PHST- 1997/10/10 00:00 [pubmed] PHST- 1997/10/10 00:01 [medline] PHST- 1997/10/10 00:00 [entrez] AID - 10.1210/endo.138.10.5577 [doi] PST - ppublish SO - Endocrinology. 1997 Oct;138(10):4517-20. doi: 10.1210/endo.138.10.5577.