PMID- 25910436 OWN - NLM STAT- MEDLINE DCOM- 20151103 LR - 20181202 IS - 1095-6840 (Electronic) IS - 0016-6480 (Print) IS - 0016-6480 (Linking) VI - 216 DP - 2015 May 15 TI - Matrix metalloproteinase inhibition influences aspects of photoperiod stimulated ovarian recrudescence in Siberian hamsters. PG - 46-53 LID - S0016-6480(15)00110-0 [pii] LID - 10.1016/j.ygcen.2015.04.010 [doi] AB - Blocking matrix metalloproteinase (MMP) activity in vivo with inhibitor GM6001 impedes photostimulated ovarian recrudescence in photoregressed Siberian hamsters. Since direct and indirect effects of MMPs influence a myriad of ovarian functions, we investigated the effect of in vivo MMP inhibition during recrudescence on ovarian mRNA expression of steroidogenic acute regulatory protein (StAR), 3beta-hydroxysteroid dehydrogenase (3beta-HSD), Cyp19a1 aromatase, epidermal growth factor receptor (EGFR), amphiregulin (Areg), estrogen receptors (Esr1 and Esr2), tissue inhibitors of MMPs (TIMP-1,-2,-3), proliferating cell nuclear antigen (PCNA), vascular endothelial growth factor A (VEGFA), its receptor VEGFR-2, and angiopoietin-2 (Ang-2). Female Siberian hamsters were randomly assigned to one of four photoperiod groups: stimulatory long (LD) or inhibitory short (SD) photoperiods, or transferred from SD to LD for 2 weeks (post-transfer, PT). Half of the PT hamsters were injected (ip) daily with GM6001 (PTG). SD exposure reduced ovarian StAR, 3beta-HSD, Cyp19a1, Esr1, Esr2, TIMPs 2-3, PCNA, VEGFR-2 and Ang-2 mRNA expression (p<0.05), and 2 weeks of photostimulation restored mRNA expression of 3beta-HSD and PCNA and increased Areg and VEGFA mRNA expression in the PT group. GM6001 treatment during photostimulation (PTG) increased TIMP-1, -2 and -3 and PCNA mRNA, but inhibited Areg mRNA expression compared to PT. Neither photoperiod nor GM6001 altered EGFR expression. Results of this study suggest that in vivo inhibition of MMP activity by GM6001 may impede ovarian recrudescence, particularly follicular growth, in two ways: (1) directly by partially inhibiting the release of EGFR ligands like Areg, thereby potentially affecting EGFR activation and its downstream pathway, and (2) indirectly by its effect on TIMPs which themselves can affect proliferation, angiogenesis and follicular growth. CI - Copyright (c) 2015 Elsevier Inc. All rights reserved. FAU - Shahed, Asha AU - Shahed A AD - Reproductive Biology Group, Department of Biological Sciences, California State University Long Beach, Long Beach, CA 90840, United States. FAU - Simmons, Jamie J AU - Simmons JJ AD - Reproductive Biology Group, Department of Biological Sciences, California State University Long Beach, Long Beach, CA 90840, United States. FAU - Featherstone, Sydney L AU - Featherstone SL AD - Reproductive Biology Group, Department of Biological Sciences, California State University Long Beach, Long Beach, CA 90840, United States. FAU - Young, Kelly A AU - Young KA AD - Reproductive Biology Group, Department of Biological Sciences, California State University Long Beach, Long Beach, CA 90840, United States. Electronic address: kelly.young@csulb.edu. LA - eng GR - SC3 GM089611/GM/NIGMS NIH HHS/United States GR - SC3GM089611/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20150421 PL - United States TA - Gen Comp Endocrinol JT - General and comparative endocrinology JID - 0370735 RN - 0 (Biomarkers) RN - 0 (Dipeptides) RN - 0 (Matrix Metalloproteinase Inhibitors) RN - 0 (N-(2(R)-2-(hydroxamidocarbonylmethyl)-4-methylpentanoyl)-L-tryptophan methylamide) RN - 0 (Phosphoproteins) RN - 0 (Proliferating Cell Nuclear Antigen) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Estrogen) RN - 0 (Vascular Endothelial Growth Factor A) RN - 0 (steroidogenic acute regulatory protein) RN - 127497-59-0 (Tissue Inhibitor of Metalloproteinase-2) RN - EC 1.1.- (17-Hydroxysteroid Dehydrogenases) RN - EC 1.1.1.51 (3 (or 17)-beta-hydroxysteroid dehydrogenase) RN - EC 1.14.14.1 (Aromatase) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 3.4.24.- (Matrix Metalloproteinases) SB - IM MH - 17-Hydroxysteroid Dehydrogenases/genetics/metabolism MH - Animals MH - Aromatase/genetics/metabolism MH - Biomarkers/*metabolism MH - Cricetinae MH - Dipeptides/*pharmacology MH - ErbB Receptors/genetics/metabolism MH - Female MH - Matrix Metalloproteinase Inhibitors/*pharmacology MH - Matrix Metalloproteinases/*chemistry/genetics/metabolism MH - Ovary/drug effects/*physiology/radiation effects MH - Phosphoproteins/genetics/metabolism MH - *Photoperiod MH - Proliferating Cell Nuclear Antigen/genetics/metabolism MH - RNA, Messenger/genetics MH - Real-Time Polymerase Chain Reaction MH - Receptors, Estrogen/genetics/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction MH - Tissue Inhibitor of Metalloproteinase-2/genetics/metabolism MH - Vascular Endothelial Growth Factor A/genetics/metabolism PMC - PMC4457603 MID - NIHMS683410 OTO - NOTNLM OT - EGFR OT - MMP OT - Photoperiod OT - Recrudescence OT - TIMPs EDAT- 2015/04/26 06:00 MHDA- 2015/11/04 06:00 PMCR- 2016/05/15 CRDT- 2015/04/26 06:00 PHST- 2014/10/29 00:00 [received] PHST- 2015/03/04 00:00 [revised] PHST- 2015/04/12 00:00 [accepted] PHST- 2015/04/26 06:00 [entrez] PHST- 2015/04/26 06:00 [pubmed] PHST- 2015/11/04 06:00 [medline] PHST- 2016/05/15 00:00 [pmc-release] AID - S0016-6480(15)00110-0 [pii] AID - 10.1016/j.ygcen.2015.04.010 [doi] PST - ppublish SO - Gen Comp Endocrinol. 2015 May 15;216:46-53. doi: 10.1016/j.ygcen.2015.04.010. Epub 2015 Apr 21.