Mitochondrial lipid peroxides and antioxidant enzymes in colorectal adenocarcinoma tissues.
Lipid peroxide levels and superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and glutathione transferase (GST) activities were investigated in mitochondrial fractions obtained from tumorous and nontumorous colorectal tissues of fourteen patients with colon and rectum cancer. Histopathological evaluations, including type, stage, necrosis and lymphocyte infiltration were also performed for each patient. The activities of SOD, GSH-Px and GST were increased significantly, but lipid peroxide levels remained unchanged in mitochondria obtained from tumors compared to adjacent normal tissues of subjects with colorectal cancer. When the patients were grouped according to their histopathological evaluation, such as type, stage, necrosis and lymphocyte infiltration, no relationship was observed between the histopathological results and the mitochondrial lipid peroxidation or antioxidant enzyme activities.
Kanbagli
O
O
The Department of Biochemistry, Istanbul Medical Faculty of Istanbul University, Capa, 34390, Turkey. okanbagli@hotmail.com
Ozdemirler
G
G
Bulut
T
T
Yamaner
S
S
Aykaç-Toker
G
G
Uysal
M
M
D000230:Adenocarcinoma / Q000378:metabolism* / Q000473:pathology / Q000601:surgery; D003106:Colon / Q000378:metabolism; D003110:Colonic Neoplasms / Q000378:metabolism / Q000473:pathology / Q000601:surgery; D015179:Colorectal Neoplasms / Q000378:metabolism* / Q000473:pathology / Q000601:surgery; D005260:Female; D005979:Glutathione Peroxidase / Q000378:metabolism*; D005982:Glutathione Transferase / Q000378:metabolism*; D006801:Humans; D007413:Intestinal Mucosa / Q000378:metabolism; D015227:Lipid Peroxidation; D016246:Lymphocytes, Tumor-Infiltrating / Q000473:pathology; D008297:Male; D008875:Middle Aged; D008928:Mitochondria / Q000378:metabolism*; D009336:Necrosis; D009367:Neoplasm Staging; D012004:Rectal Neoplasms / Q000378:metabolism / Q000473:pathology / Q000601:surgery; D012007:Rectum / Q000378:metabolism; D013482:Superoxide Dismutase / Q000378:metabolism*
D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D005982:Glutathione Transferase