title: Long-term alcohol consumption increases pro-matrix metalloproteinase-9 levels via oxidative stress.
abstract: Matrix metalloproteinases (MMPs) play an important role in alcoholic liver disease. In this study, we evaluated the relationship between pro MMP-9 (pMMP-9) and oxidative stress in plasma of rat exposed to chronic alcohol consumption. Twenty four rats were divided into four groups. Rats in the control group (n = 6) were subjected to physiologic saline by intragastric (i.g.) route. Group Ethanol (n = 6) was given 1 ml of 80% ethanol (v/v) in distilled water through i.g. route. Group Vitamin E (Vit E), (n = 6) was given vitamin E (100 mg kg⁻¹ day⁻¹) by intra peritonealy. Group Vitamin E + Ethanol (n = 6) was given vitamin E 2 h before the administration of ethanol. At the end of 4 weeks, blood samples were taken and plasma malondialdehyde (MDA), protein carbonyls (PCs), aspartate aminotransferase (AST), tumor necrosis factor-α (TNF-α) and pMMP-9 levels were measured. Chronic ethanol administration increased the AST, MDA, PCs, TNF-α and pMMP-9 levels when compared to those in control group (p < 0.05, p < 0.01, p < 0.01, p < 0.05, p < 0.05, respectively). Vitamin E treatment was found to decrease lipid peroxidation and protein oxidation (p < 0.01, p < 0.01, respectively). Also TNF-α and pMMP-9 levels returned to normal by vitamin E treatment. Within all subjects, there was positive correlation between pMMP-9 levels and MDA, PCs levels (p = 0.045, r = 0.454; p = 0.004, r = 0.574, respectively). We conclude that since antioxidant supplementation decreases the alcohol-induced pMMP-9 levels, oxidative stress could be one of the mediators of the generation of MMP-9.
authors.affiliation: Department of Biochemistry, School of Medicine, Afyon Kocatepe University, Inonu Bulvari, 03200, Afyon, Turkey, tkoken@aku.edu.tr
authors.forename: Tulay
authors.initials: T
authors.lastname: Koken
authors.forename: Fatih
authors.initials: F
authors.lastname: Gursoy
authors.forename: Ahmet
authors.initials: A
authors.lastname: Kahraman
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000627:therapeutic use; D001219:Aspartate Aminotransferases / Q000097:blood; D002492:Central Nervous System Depressants / Q000494:pharmacology*; D000431:Ethanol / Q000494:pharmacology*; D015227:Lipid Peroxidation / Q000187:drug effects; D008099:Liver / Q000187:drug effects / Q000378:metabolism; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism*; D018384:Oxidative Stress / Q000187:drug effects*; D050050:Protein Carbonylation / Q000187:drug effects; D051381:Rats; D017207:Rats, Sprague-Dawley; D013268:Stimulation, Chemical; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism; D014810:Vitamin E / Q000627:therapeutic use
chemical_list: D000975:Antioxidants; D002492:Central Nervous System Depressants; D014409:Tumor Necrosis Factor-alpha; D014810:Vitamin E; D000431:Ethanol; D008315:Malondialdehyde; D001219:Aspartate Aminotransferases; D020780:Matrix Metalloproteinase 9
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