title: Soluble epoxide hydrolase inhibitor 1-trifluoromethoxyphenyl-3- (1-propionylpiperidin-4-yl) urea attenuates bleomycin-induced pulmonary fibrosis in mice.
abstract: Epoxyeicosatrienoic acids (EETs), the metabolites of arachidonic acid derived from the cytochrome P450 (CYP450) epoxygenases, are mainly metabolized by soluble epoxide hydrolase (sEH) to their corresponding diols. EETs but not their diols, have anti-inflammatory properties and inhibition of sEH might provide protective effects against inflammatory fibrosis. We test the effects of a selected sEH inhibitor, 1-trifluoromethoxyphenyl-3-(1-propionylpiperidin-4-yl) urea (TPPU), on bleomycin-induced pulmonary fibrosis (PF) in mice. A mouse model of PF was established by intratracheal injection of bleomycin and TPPU was administered for 21 days after bleomycin injection. We found TPPU treatment improved the body weight loss and survival rate of bleomycin-stimulated mice. Histological examination showed that TPPU treatment alleviated bleomycin-induced inflammation and maintained the alveolar structure of the pulmonary tissues. TPPU also decreased the bleomycin-induced deposition of collagen and the expression of procollagen I mRNA in lung tissues of mice. TPPU decreased the transforming growth factor-β1 (TGF-β1), interleukin-1β (IL-1β) and IL-6 levels in the serum of bleomycin-stimulated mice. Furthermore, TPPU inhibited the proliferation and collagen synthesis of mouse fibroblasts and partially reversed TGF-β1-induced α-smooth muscle actin expression. Our results indicate that the inhibition of sEH attenuates bleomycin-induced inflammation and collagen deposition and therefore prevents bleomycin-induced PF in a mouse model.
authors: Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, People's Republic of China.
authors: Yong
authors: Y
authors: Zhou
authors: Jun
authors: J
authors: Yang
authors: Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, People's Republic of China.
authors: Guo-Ying
authors: GY
authors: Sun
authors: Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, People's Republic of China.
authors: Tian
authors: T
authors: Liu
authors: Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, People's Republic of China.
authors: Jia-Xi
authors: JX
authors: Duan
authors: Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, People's Republic of China.
authors: Hui-Fang
authors: HF
authors: Zhou
authors: Department of Entomology and the UC Davis Cancer Center, University of California Davis, Davis, CA 95616, USA.
authors: Kin Sing
authors: KS
authors: Lee
authors: Department of Entomology and the UC Davis Cancer Center, University of California Davis, Davis, CA 95616, USA.
authors: Bruce D
authors: BD
authors: Hammock
authors: Department of Neurology, University of Texas Medical Branch, Galveston, TX 77555, USA.
authors: Xiang
authors: X
authors: Fang
authors: State Key Laboratory of Trauma, Burns, and Combined Injury, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, Sichuan, 400042, People's Republic of China. hellojjx@126.com.
authors: Jian-Xin
authors: JX
authors: Jiang
authors: Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, People's Republic of China. guanchaxiang@csu.edu.cn.
authors: Cha-Xiang
authors: CX
authors: Guan
mesh_terms: D000818:Animals; D001761:Bleomycin; D016923:Cell Death / Q000187:drug effects; D002454:Cell Differentiation / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D003094:Collagen / Q000378:metabolism; D015777:Eicosanoids / Q000097:blood / Q000737:chemistry; D004851:Epoxide Hydrolases / Q000037:antagonists & inhibitors* / Q000378:metabolism; D005347:Fibroblasts / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D053583:Interleukin-1beta / Q000097:blood; D015850:Interleukin-6 / Q000097:blood; D008168:Lung / Q000187:drug effects / Q000473:pathology; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D041681:NIH 3T3 Cells; D010671:Phenylurea Compounds / Q000494:pharmacology / Q000627:therapeutic use*; D010880:Piperidines / Q000494:pharmacology / Q000627:therapeutic use*; D011658:Pulmonary Fibrosis / Q000097:blood / Q000139:chemically induced / Q000188:drug therapy* / Q000473:pathology; D016196:S Phase / Q000187:drug effects; D012995:Solubility; D053773:Transforming Growth Factor beta1 / Q000097:blood; D015431:Weight Loss / Q000187:drug effects
chemical_list: C581572:1-trifluoromethoxyphenyl-3-(1-propionylpiperidine-4-yl)urea; D015777:Eicosanoids; D053583:Interleukin-1beta; D015850:Interleukin-6; D010671:Phenylurea Compounds; D010880:Piperidines; D053773:Transforming Growth Factor beta1; D001761:Bleomycin; D003094:Collagen; D004851:Epoxide Hydrolases
keywords: Epoxyeicosatrienoic acids; Mouse; Proliferation; Pulmonary fibrosis; Soluble epoxide hydrolase inhibitor