title: Curcumin Ameliorates Reserpine-Induced Gastrointestinal Mucosal Lesions Through Inhibiting IκB-α/NF-κB Pathway and Regulating Expression of Vasoactive Intestinal Peptide and Gastrin in Rats.
abstract: The objective of our study was to investigate whether curcumin protects against reserpine-induced gastrointestinal mucosal lesions (GMLs) in rats and to explore the mechanism of curcumin's action. Sprague-Dawley rats were randomly divided into four groups: control group, reserpine-treated group, reserpine treatment group with curcumin at high dose (200 mg/kg), and reserpine treatment group with curcumin at low dose (100 mg/kg). Rats in reserpine-treated group were induced by intraperitoneally administered reserpine (0.5 mg/kg) for 28 days. TUNEL staining and hematoxylin and eosin staining were used to evaluate the apoptotic cells and morphologic changes. In addition, to explore the mechanism of curcumin in protecting GMLs, we used serum of experimental rats to assess the level of vasoactive intestinal peptide (VIP), gastrin, interleukin-6, interleukin-10, tumor necrosis factor-α and interferon-γ by ELISA and radioimmunoassay. The protein levels of NF-κB, p-IκB-α, IκB-α, Bcl-2, Bax, and cleaved-caspase-3 were examined by western blot analysis. Data were analyzed with SPSS 19.0 software package. Curcumin treatment prevented tissue damage and cell death in the reserpine-treated rats and effectively decreased inflammatory response and balanced the expression of VIP and gastrin in the reserpine-treated rats. NF-κB, p-IκB-α, Bax, and cleaved-caspase-3 were increased in the reserpine group, but the curcumin high-dose group inhibited them. Curcumin can target the IκB-α/NF-κB pathway to inhibit inflammatory response and regulate the level of VIP and gastrin in reserpine-induced GML rats.
authors.affiliation: 1 Research Center of Translational Medicine, The First Affiliated Hospital, Sun Yat-Sen University , Guangzhou, China .
authors.forename: Lingli
authors.initials: L
authors.lastname: Long
authors.affiliation: 1 Research Center of Translational Medicine, The First Affiliated Hospital, Sun Yat-Sen University , Guangzhou, China .
authors.forename: Jingnan
authors.initials: J
authors.lastname: Wang
authors.affiliation: 2 Department of Spine Surgery, Sun Yat-Sen University , Guangzhou, China .
authors.forename: Ningning
authors.initials: N
authors.lastname: Chen
authors.affiliation: 1 Research Center of Translational Medicine, The First Affiliated Hospital, Sun Yat-Sen University , Guangzhou, China .
authors.forename: Shuhui
authors.initials: S
authors.lastname: Zheng
authors.affiliation: 3 Department of Traditional Chinese Medicine, Sun Yat-Sen University , Guangzhou, China .
authors.forename: Lanying
authors.initials: L
authors.lastname: Shi
authors.affiliation: 1 Research Center of Translational Medicine, The First Affiliated Hospital, Sun Yat-Sen University , Guangzhou, China .
authors.forename: Yuxia
authors.initials: Y
authors.lastname: Xu
authors.affiliation: 4 Pathology, The First Affiliated Hospital, Sun Yat-Sen University , Guangzhou, China .
authors.forename: Canqiao
authors.initials: C
authors.lastname: Luo
authors.affiliation: 1 Research Center of Translational Medicine, The First Affiliated Hospital, Sun Yat-Sen University , Guangzhou, China .
authors.forename: Yubin
authors.initials: Y
authors.lastname: Deng
mesh_terms: D000818:Animals; D000959:Antihypertensive Agents / Q000009:adverse effects*; D003474:Curcumin / Q000008:administration & dosage*; D005753:Gastric Mucosa / Q000187:drug effects* / Q000293:injuries / Q000378:metabolism; D005755:Gastrins / Q000235:genetics* / Q000378:metabolism; D005767:Gastrointestinal Diseases / Q000188:drug therapy* / Q000209:etiology / Q000235:genetics / Q000378:metabolism; D006801:Humans; D020672:I-kappa B Proteins / Q000235:genetics / Q000378:metabolism*; D008297:Male; D016328:NF-kappa B / Q000235:genetics / Q000378:metabolism*; D051381:Rats; D017207:Rats, Sprague-Dawley; D012110:Reserpine / Q000009:adverse effects*; D015398:Signal Transduction / Q000187:drug effects; D014660:Vasoactive Intestinal Peptide / Q000235:genetics* / Q000378:metabolism
chemical_list: D000959:Antihypertensive Agents; D005755:Gastrins; D020672:I-kappa B Proteins; D016328:NF-kappa B; D014660:Vasoactive Intestinal Peptide; D012110:Reserpine; D003474:Curcumin
keywords: NF-κB; apoptosis; curcumin; in vivo; inflammation