Advanced oxidation protein products: a novel marker of oxidative stress in ulcerative colitis.
OBJECTIVE
The etiology and pathogenesis of chronic inflammatory bowel diseases are still poorly understood. Oxidative stress takes place in the pathogenesis of ulcerative colitis (UC) and advanced oxidation protein products (AOPP) are accepted as a novel marker of oxidative stress. There are no data concerning whether AOPP may be used as a simple serum marker to assess the disease activity, predict severity of the disease course in UC.


METHODS
In this study, we determine the importance of neutrophil activation and the role of oxidative stress in the pathogenesis of UC, by quantification of AOPP and total thiol levels as markers of oxidative protein damage, malondialdehyde levels as a marker of lipid peroxidation, and myeloperoxidase activity as a marker of neutrophil activation in patients with UC.


RESULTS
Serum levels of AOPP, thiol, myeloperoxidase activity, and malondialdehyde were found as increased in UC group compared with controls (P=0.004, 0.047, 0.001, and 0.001 respectively).


CONCLUSIONS
Our finding of increased levels of plasma AOPP levels supports the presence of oxidative stress and protein oxidation in UC and this marker may be used as a simple serum marker to assess disease activity, predict the severity of disease course, and perhaps response to therapy.
Baskol
Mevlut
M
Department of Gastroenterology, Faculty of Medicine, Erciyes University, Kayseri, Turkey. gmbaskol@yahoo.com
Baskol
Gulden
G
Koçer
Derya
D
Ozbakir
Omer
O
Yucesoy
Mehmet
M
D000293:Adolescent; D000328:Adult; D000368:Aged; D015415:Biomarkers / Q000097:blood; D001798:Blood Proteins / Q000378:metabolism*; D003093:Colitis, Ulcerative / Q000378:metabolism*; D005260:Female; D006801:Humans; D015227:Lipid Peroxidation; D008297:Male; D008315:Malondialdehyde / Q000097:blood; D008875:Middle Aged; D018375:Neutrophil Activation; D010084:Oxidation-Reduction; D018384:Oxidative Stress; D009195:Peroxidase / Q000378:metabolism; D012720:Severity of Illness Index; D013438:Sulfhydryl Compounds / Q000097:blood
D015415:Biomarkers; D001798:Blood Proteins; D013438:Sulfhydryl Compounds; D008315:Malondialdehyde; D009195:Peroxidase