PMID- 26092993 OWN - NLM STAT- MEDLINE DCOM- 20151215 LR - 20200930 IS - 1522-1504 (Electronic) IS - 1040-0605 (Linking) VI - 309 IP - 5 DP - 2015 Sep 1 TI - 15-Lipoxygenase and 15-hydroxyeicosatetraenoic acid regulate intravascular thrombosis in pulmonary hypertension. PG - L449-62 LID - 10.1152/ajplung.00004.2015 [doi] AB - Pulmonary arterial hypertension (PAH) is a disease characterized by thickening of pulmonary artery walls, elevated pulmonary vascular resistance, pulmonary vascular thrombotic lesions, and right heart failure. Recent studies suggest that 15-lipoxygenase (15-LO)/15-hydroxyeicosatetraenoic acid (15-HETE) play an important role in PAH, acting on arterial walls. Here, we show evidence for the action of the 15-LO/15-HETE signaling in the pulmonary vascular thrombotic lesions in the experimental PAH models. Platelet deposition was augmented in rats exposed to hypoxia and Sugen 5416, which were both prevented by nordihydroguaiaretic acid (NDGA), a 15-LO inhibitor. Chronic hypoxic resulted in the platelet deposition specifically in pulmonary vasculature, which was reversed by 15-LO inhibitor. The 15-LO pathway mediated in the endothelial dysfunction induced by hypoxia in vivo. Meanwhile, 15-HETE positively regulated the generation of IL-6 and monocyte chemoattractant protein-1 (MCP-1). The coagulation and platelet activation induced by hypoxia were reversed by 15-LO inhibitor NDGA or the MCP-1 inhibitor synthesis inhibitor bindarit in rats. The 15-LO/15-HETE signaling promoted the coagulation and platelet activation, which was suppressed by MCP-1 inhibition. These results therefore suggest that 15-LO/15-HETE signaling plays a role in platelet activation and pulmonary vascular thrombosis in PAH, involving MCP-1. CI - Copyright (c) 2015 the American Physiological Society. FAU - Shen, Tingting AU - Shen T AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; FAU - Shi, Jiucheng AU - Shi J AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; FAU - Wang, Na AU - Wang N AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; FAU - Yu, Xiufeng AU - Yu X AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; FAU - Zhang, Chen AU - Zhang C AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; FAU - Li, Jing AU - Li J AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; FAU - Wei, Liuping AU - Wei L AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; FAU - Ma, Cui AU - Ma C AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; FAU - Zhao, Xijuan AU - Zhao X AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; FAU - Lian, Mingming AU - Lian M AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; FAU - Jiang, Chun AU - Jiang C AD - Biology Department, Georgia State University, Atlanta, Georgia. FAU - Zhu, Daling AU - Zhu D AD - Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China; Biopharmaceutical Key Laboratory of Heilongjiang Province, Harbin Medical University, Harbin, China; and dalingz@yahoo.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150619 PL - United States TA - Am J Physiol Lung Cell Mol Physiol JT - American journal of physiology. Lung cellular and molecular physiology JID - 100901229 RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Cytokines) RN - 0 (Hydroxyeicosatetraenoic Acids) RN - 0 (Indazoles) RN - 0 (Lipoxygenase Inhibitors) RN - 0 (Propionates) RN - 0 (RNA, Small Interfering) RN - 73945-47-8 (15-hydroxy-5,8,11,13-eicosatetraenoic acid) RN - 7BO8G1BYQU (Masoprocol) RN - EC 1.13.11.33 (Arachidonate 15-Lipoxygenase) RN - JQ11LH711M (bindarit) SB - IM MH - Animals MH - Arachidonate 15-Lipoxygenase/genetics/*metabolism MH - Blood Platelets/pathology MH - Cells, Cultured MH - Chemokine CCL2/antagonists & inhibitors MH - Cytokines/metabolism MH - Humans MH - Hydroxyeicosatetraenoic Acids/*metabolism MH - Hypertension, Pulmonary/drug therapy/*pathology MH - Hypoxia/blood/pathology MH - Indazoles/therapeutic use MH - Lipoxygenase Inhibitors/therapeutic use MH - Male MH - Masoprocol/therapeutic use MH - Platelet Activation/drug effects MH - Propionates/therapeutic use MH - Pulmonary Artery/pathology MH - RNA Interference MH - RNA, Small Interfering MH - Random Allocation MH - Rats MH - Rats, Wistar MH - Signal Transduction/drug effects MH - Thrombosis/drug therapy/etiology/*metabolism MH - Vascular Resistance/drug effects/*physiology OTO - NOTNLM OT - 15-lipoxygenase OT - monocyte chemoattractant protein-1 OT - platelet OT - thrombosis EDAT- 2015/06/21 06:00 MHDA- 2015/12/17 06:00 CRDT- 2015/06/21 06:00 PHST- 2015/01/07 00:00 [received] PHST- 2015/06/12 00:00 [accepted] PHST- 2015/06/21 06:00 [entrez] PHST- 2015/06/21 06:00 [pubmed] PHST- 2015/12/17 06:00 [medline] AID - ajplung.00004.2015 [pii] AID - 10.1152/ajplung.00004.2015 [doi] PST - ppublish SO - Am J Physiol Lung Cell Mol Physiol. 2015 Sep 1;309(5):L449-62. doi: 10.1152/ajplung.00004.2015. Epub 2015 Jun 19.