Oxidative stress in chronic otitis media.
Chronic otitis media usually presents with a benign tumor-like lesion of the temporal bone known as a cholesteatoma. The role of oxidative stress in the pathogenesis of chronic otitis media and cholesteatoma has not yet been fully explored. Therefore, the aim of this study was to investigate the oxidative stress markers and antioxidant enzymes in patients with cholesteatomatous and noncholesteatomatous chronic otitis media and in healthy subjects. A prospective controlled trial was performed on cholesteatomatous and noncholesteatomatous chronic otitis media patients in a tertiary referral center in a university hospital. A total of 75 subjects, including 25 cholesteatomatous and 25 noncholesteatomatous chronic otitis media patients and 25 healthy subjects participated in this study. Serum total oxidant status (TOS) and oxidative stress index (OSI) levels were significantly increased in the patient groups with or without cholesteatoma compared with the control group. Serum total antioxidant status (TAS) levels and Paraoxonase and arylesterase activity were significantly lower in the patient groups with or without cholesteatoma compared with the control group. Serum TOS and OSI levels were lower in the noncholesteatomatous group, whereas serum TAS levels were higher compared with the cholesteatomatous group. Serum arylesterase activity was significantly lower in the noncholesteatomatous group compared with the control group. The results of this study reveal that in cholesteatoma cases, the oxidative stress and antioxidant enzyme imbalance were more significant than in cases of chronic otitis media without cholesteatoma.
Department of Otolaryngology, Medical Faculty, Gaziantep University, Sahinbey, Gaziantep 27070, Turkey. baysalelif@yahoo.com
Elif
E
Baysal
Nurten
N
Aksoy
Ferit
F
Kara
Seyithan
S
Taysi
Abdullah
A
Taşkın
Hasan
H
Bilinç
Cengiz
C
Cevik
Fatih
F
Celenk
Muzaffer
M
Kanlıkama
D000328:Adult; D043303:Aryldialkylphosphatase / Q000097:blood*; D002265:Carboxylic Ester Hydrolases / Q000097:blood*; D016022:Case-Control Studies; D018424:Cholesteatoma, Middle Ear / Q000175:diagnosis / Q000503:physiopathology*; D002908:Chronic Disease; D004150:Dipeptidases / Q000097:blood*; D005260:Female; D006785:Hospitals, University; D006801:Humans; D008297:Male; D008875:Middle Aged; D010033:Otitis Media / Q000175:diagnosis / Q000503:physiopathology*; D018384:Oxidative Stress / Q000502:physiology*; D011446:Prospective Studies; D012016:Reference Values; D014421:Turkey; D055815:Young Adult
D002265:Carboxylic Ester Hydrolases; C019734:arylesterase; D043303:Aryldialkylphosphatase; D004150:Dipeptidases; C022449:proline dipeptidase