title: Gastric tissue oxidative changes in portal hypertension and cirrhosis.
abstract: Gastric mucosal lesions are very common in portal hypertension and cirrhosis. The aim of this study was to assess for oxidative gastric tissue damage in cirrhosis and evaluate relations with portal hypertension and cirrhosis parameters. The study included 30 patients with cirrhosis and 30 controls. Each patient's history, physical examination, and laboratory findings were recorded, and multiple biopsies of the gastric antrum were obtained at endoscopy. A set of antral biopsies was also collected from each control subject. Each tissue specimen was analyzed for levels of glutathione peroxidase (GPX), superoxide dismutase (SOD), and catalase (CAT) activity and level of malondialdehyde (MDA). Patients' gastric GPX, SOD, and CAT levels were significantly lower, and MDA levels were higher, than in the control group. The GPX activity level in the specimens was moderately negatively correlated with portal vein diameter (P<0.05, r=-0.45) and spleen length (P<0.05, r=-0.45). In this study gastric tissue oxidative markers showed that antral oxidative factors worsen in cirrhosis. Oxidative stress may not be a clinical condition but it obviously shows gastric tissue damage and may explain many patients' gastric lesions and hemorrhage.
authors.affiliation: Department of Gastroenterology and Biochemistry, Inonu University, Turgut Ozal Tip Merkezi, 44000, Malatya, Turkey.
authors.forename: Yuksel
authors.initials: Y
authors.lastname: Seckin
authors.forename: Murat M M
authors.initials: MM
authors.lastname: Harputluoglu
authors.forename: Kadir
authors.initials: K
authors.lastname: Batcioglu
authors.forename: Melih
authors.initials: M
authors.lastname: Karincaoglu
authors.forename: Bulent
authors.initials: B
authors.lastname: Yildirim
authors.forename: Ramazan I
authors.initials: RI
authors.lastname: Oner
authors.forename: Burcin
authors.initials: B
authors.lastname: Uyumlu
authors.forename: Nurettin
authors.initials: N
authors.lastname: Aydogdu
authors.forename: Fatih
authors.initials: F
authors.lastname: Hilmioglu
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D002374:Catalase / Q000378:metabolism; D005260:Female; D005753:Gastric Mucosa / Q000201:enzymology / Q000378:metabolism* / Q000382:microbiology / Q000473:pathology; D005773:Gastroscopy; D005979:Glutathione Peroxidase / Q000378:metabolism; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D006975:Hypertension, Portal / Q000201:enzymology / Q000378:metabolism* / Q000382:microbiology / Q000473:pathology; D008103:Liver Cirrhosis / Q000201:enzymology / Q000378:metabolism* / Q000382:microbiology / Q000473:pathology; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism; D008875:Middle Aged; D018384:Oxidative Stress; D011169:Portal Vein / Q000473:pathology; D011446:Prospective Studies; D013154:Spleen / Q000473:pathology; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D008315:Malondialdehyde; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase