On the benefits of silymarin in murine colitis by improving balance of destructive cytokines and reduction of toxic stress in the bowel cells |
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Authors: | Hadi Esmaily Azadeh Hosseini-Tabatabaei Reza Rahimian Reza Khorasani Maryam Baeeri Ahmadreza Barazesh-Morgani Nargues Yasa Yassaman Khademi Mohammad Abdollahi |
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Institution: | (1) Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences (TUMS), 1417614411 Tehran, Iran;(2) Medicinal Plants Research Center, TUMS, 1417614411 Tehran, Iran |
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Abstract: | Inflammatory bowel disease (IBD) is a multifactorial disease with an unknown etiology characterized by oxidative stress, leucocyte
infiltration and a rise in inflammatory cytokines. In this study, we have investigated the effects of silymarin, a mixture
of several flavonolignans with established antioxidant and anti-inflammatory properties, on trinitrobenzene sulphonic acid
(TNBS)-induced colitis in rats. Experimental colitis was induced in male Wistar-albino rats by delivering TNBS to the distal
colon. All the medicines were administered by gavage for seven days. Thirty-six male rats were divided into six groups containing
six rats in each one. Control rats received only TNBS. In the treated groups, animals were given different doses of silymarin
(40, 80, and 160 mg/kg). Dexamethasone (1 mg/kg) was used as the positive treatment. Colonic status was investigated seven
days post induction of colitis through macroscopic, histological, and biochemical analyses. Amelioration of the morphological
signs including macroscopic damage, necrotic area, and histology were seen subsequent to treating animals with silymarin.
These observations were accompanied by a significant reduction in the degree of both neutrophil infiltration, indicated by
decreased myeloperoxidase activity, and lipid peroxidation, as measured by a decline in malodialdehyde content in inflamed
colon as well as a decrease in levels of inflammatory cytokines (TNF-α and IL-1β). The results of the present study reveal
that the beneficial effect of silymarin in bowel cells is mediated through its anti-oxidant and anti-inflammatory potentials. |
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Keywords: | Silymarin Inflammatory bowel disease Myeloperoxidase Malondialdehyde Inflammatory cytokines |
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