PMID- 30247509 OWN - NLM STAT- MEDLINE DCOM- 20200330 LR - 20200330 IS - 1529-7268 (Electronic) IS - 0006-3363 (Linking) VI - 100 IP - 2 DP - 2019 Feb 1 TI - Intentional endometrial injury increases embryo implantation potentials through enhanced endometrial angiogenesisdagger. PG - 381-389 LID - 10.1093/biolre/ioy205 [doi] AB - Embryo implantation rates have been found to be enhanced by precedent endometrial injuries, but the underlying mechanism is not fully investigated. Endometrial inflammation occurs both at peri-implantation period and after endometrial injury, in which vascular reaction is a distinctive feature of inflammation. In this study, intentional endometrial injury was done with a 0.7-mm-diameter brush inserted into the left uterine horn of female ICR mice, then turned around 720 degrees (group 2), and the right uterine horn served as the controls without endometrial injuries (group 1). Intraperitoneal equine chorionic gonadotropin 2.5 IU was injected, followed by human chorionic gonadotropin 10 IU injection, and the uterus was dissected 5 days later, roughly at the peri-implantation period. The peri-implantation endometrium was obtained, and angiogenesis protein array revealed that matrix metalloproteinase-3 (MMP-3), plasminogen activator inhibitor-1 (PAI-1), insulin-like growth factor binding protein 1 (IGFBP-1), and IL-1alpha were more strongly expressed in injured endometrium (group 2) than in the controls (group 1). Immunohistochemical CD34 staining was more prominently expressed in group 2 uterus, and the treatment with LY294002, a phosphoinositide 3-kinase (PI3K) inhibitor, significantly decreased CD34 immunopositive cells. The capabilities of permeability, proliferation, tube formation, and migration of mouse endometrial endothelial cells were significantly enhanced in group 2 than in group 1. Our results demonstrate that enhanced endometrial angiogenesis is a possible mechanism accounting for the increased endometrial receptivity after endometrial injury. CI - (c) The Author(s) 2018. Published by Oxford University Press on behalf of Society for the Study of Reproduction. FAU - Yang, Jehn-Hsiahn AU - Yang JH AD - Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan. FAU - Chen, Chin-Der AU - Chen CD AD - Department of Obstetrics and Gynecology, Fu Jen Catholic University Hospital, Taipei, Taiwan. FAU - Chou, Chia-Hung AU - Chou CH AD - Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan. FAU - Wen, Wen-Fen AU - Wen WF AD - Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan. FAU - Tsao, Po-Nien AU - Tsao PN AD - Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan. FAU - Lee, Hsinyu AU - Lee H AD - Department of Life Science, National Taiwan University, Taipei, Taiwan. FAU - Chen, Shee-Uan AU - Chen SU AD - Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Biol Reprod JT - Biology of reproduction JID - 0207224 RN - 0 (Chorionic Gonadotropin) SB - IM MH - Animals MH - Chorionic Gonadotropin/administration & dosage/pharmacology MH - Embryo Implantation/*physiology MH - Endometrium/drug effects/*injuries/*physiology MH - Endothelial Cells/physiology MH - Female MH - Mice MH - Mice, Inbred ICR MH - Neovascularization, Physiologic MH - Pregnancy OTO - NOTNLM OT - angiogenesis OT - embryo implantation OT - endometrial injury OT - endometrial receptivity EDAT- 2018/09/25 06:00 MHDA- 2020/03/31 06:00 CRDT- 2018/09/25 06:00 PHST- 2018/07/09 00:00 [received] PHST- 2018/08/03 00:00 [revised] PHST- 2018/09/20 00:00 [accepted] PHST- 2018/09/25 06:00 [pubmed] PHST- 2020/03/31 06:00 [medline] PHST- 2018/09/25 06:00 [entrez] AID - 5105746 [pii] AID - 10.1093/biolre/ioy205 [doi] PST - ppublish SO - Biol Reprod. 2019 Feb 1;100(2):381-389. doi: 10.1093/biolre/ioy205.