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GEDİK AH, ÇAKIR E, VEHAPOĞLU TÜRKMEN A, ÖZER ÖF, KAYGUSUZ SB. Total oxidant and antioxidant status and paraoxonase 1 levels of children with noncystic fibrosis bronchiectasis. Turk J Med Sci 2020; 50:1-7. [PMID: 31655531 PMCID: PMC7080354 DOI: 10.3906/sag-1503-99] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 02/14/2016] [Indexed: 01/03/2023] Open
Abstract
Background/aim To evaluate total oxidant status (TOS), total antioxidant capacity (TAC), and paraoxonase 1 (PON1) levels in children with noncystic fibrosis (CF) bronchiectasis (BE), and to compare these levels with those of healthy controls. The study parameters were also evaluated according to some demographic, anthropometric, and clinical characteristics, as well as lung functions. Materials and methods Enrolled in the study were 118 children with non-CF BE and 68 healthy controls. Serum TOS, TAC, and PON1 levels were determined. Lung function tests were performed by spirometry. Results Serum TOS was higher in the patients [median 9.54 (IQR 25–75 = 7.05–13.30) μmol H2O2 Eq/L] than in the healthy subjects [6.64 (5.45–9.53) μmol H2O2 Eq/L] (P < 0.001). TAC was higher in patients with non-CF BE [1.07 (1.0–1.07) mmol Trolox Eq/L] than in the healthy controls [0.87 (0.77–0.98) mmol Trolox Eq/L] (P < 0.001). In addition, serum PON1 levels were significantly higher in the patients [106.5 (42.5–154.2) U/L] than in the controls [47.7 (27.5–82.1) U/L] (P < 0.001). The patients with low FEV1 had decreased TAC when compared to those who had normal FEV1 in non-CF BE. Conclusion The present study demonstrated that compared with the control group the children with non-CF BE had elevated oxidative status, antioxidant defenses parameters, and PON1 values.
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Affiliation(s)
- Ahmet Hakan GEDİK
- Division of Pediatric Pulmonology, Faculty of Medicine, Bezmialem Vakıf University, İstanbulTurkey
| | - Erkan ÇAKIR
- Division of Pediatric Pulmonology, Faculty of Medicine, Bezmialem Vakıf University, İstanbulTurkey
| | | | - Ömer Faruk ÖZER
- Department of Biochemistry, Faculty of Medicine, Bezmialem Vakıf University, İstanbulTurkey
| | - Sare Betül KAYGUSUZ
- Department of Pediatrics, Faculty of Medicine, Bezmialem Vakıf University, İstanbulTurkey
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Ekinci A, Karataş D, Yetiş A, Demir E, Özcan M. Serum Oxidative Stress Levels in Patients with Nasal Septal Deviation. Turk Arch Otorhinolaryngol 2017; 55:125-128. [PMID: 29392069 DOI: 10.5152/tao.2017.2494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 07/17/2017] [Indexed: 11/22/2022] Open
Abstract
Objective Comparison of the total oxidant status (TOS), total antioxidant status (TAS) and paraoxonase (PON1) serum levels in patients with nasal septum deviation (NSD) and healthy subjects. Methods The TAS, TOS, and PON1 serum levels of 47 patients with NSD (mean age 35.3) and 50 healthy subjects (mean age 37.8) were compared in this study. Results We found significantly higher TAS levels in the control group (p<0.001). The mean TAS value was 1.196 mmoL/L in the control group, whereas it was 1.046 mmoL/L in the NSD group. On the other hand, TOS was significantly higher in the NSD group (p<0.001). We found that the mean TOS value was 6.600 mmoL/L in the control group, and 20.194 mmoL/L in the NSD group. The NSD and control groups had similar PON1 levels (p=0.446). The mean PON1 value was 279.64 U/L in the control group, and 324.21 U/L in the NSD group. Conclusion We detected higher TOS and lower TAS levels in patients with NSD compared to healthy subjects. These results indicate that patients with NSD are exposed to oxidative stress.
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Affiliation(s)
- Adnan Ekinci
- Department of Otorhinolaryngology, Hitit University School of Medicine, Çorum, Turkey
| | - Duran Karataş
- Department of Otorhinolaryngology, Hitit University School of Medicine, Çorum, Turkey
| | - Abdurrahman Yetiş
- Department of Otorhinolaryngology, Hitit University School of Medicine, Çorum, Turkey
| | - Emre Demir
- Department of Biostatistics, Hitit University School of Medicine, Çorum, Turkey
| | - Müge Özcan
- Department of Otorhinolaryngology, Hitit University School of Medicine, Çorum, Turkey
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Koc S, Kıyıcı H, Toker A, Soyalıç H, Aslan H, Kesici H, Karaca ZI. The effect of melatonin and vitamin C treatment on the experimentally induced tympanosclerosis: study in rats. Braz J Otorhinolaryngol 2016; 83:541-545. [PMID: 27484331 PMCID: PMC9444792 DOI: 10.1016/j.bjorl.2016.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 06/16/2016] [Accepted: 06/24/2016] [Indexed: 11/07/2022] Open
Abstract
Introduction The ethiopathogenesis of tympanosclerosis has not been completely under- stood yet. Recent studies have shown that free oxygen radicals are important in the formation of tympanosclerosis. Melatonin and Vitamin C are known to be a powerful antioxidant, interacts directly with Reactive Oxygen Species and controls free radical-mediated tissue damage. Objective To demonstrate the possible preventative effects of melatonin and Vitamin C on tympanosclerosis in rats by using histopathology and determination of total antioxidant status total antioxidant status. Methods Standard myringotomy and standard injury were performed in the middle ear of 24 rats. The animals were divided into three groups: Group 1 received melatonin, Group 2 received vitamin C, and Group 3 received saline solution. Results The mean values of total antioxidant status were similar in the all study groups before the treatment period. The mean values of total antioxidant status were significantly higher in the melatonin and vitamin C groups compared to control group but vitamin C with melatonin groups were similar after the treatment period (p < 0.001). Minimum and maximum wall thicknesses were lower in the melatonin and vitamin C groups compared to the control group but the differences were insignificant. Conclusion Melatonin increases total antioxidant status level and might have some effect on tympanosclerosis that develops after myringotomy.
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Affiliation(s)
- Sema Koc
- Antalya Education and Research Hospital, Department of ENT Head and Neck Surgery, Antalya, Turkey.
| | - Halil Kıyıcı
- Mevlana University, School of Medicine, Department of Pathology, Konya, Turkey
| | - Aysun Toker
- Necmettin Erbakan University, School of Medicine, Department of Biochemistry and Clinical Biochemistry, Konya, Turkey
| | - Harun Soyalıç
- Gaziosmanpasa University, School of Medicine, Department of Otorhinolaryngology, Tokat, Turkey
| | - Huseyin Aslan
- Gaziosmanpasa University, School of Medicine, Department of Histology and Embryology, Tokat, Turkey
| | - Hakan Kesici
- Gaziosmanpasa University, School of Medicine, Department of Histology and Embryology, Tokat, Turkey
| | - Zafer I Karaca
- Gaziosmanpasa University, School of Medicine, Department of Histology and Embryology, Tokat, Turkey
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Koç S, Akyüz S, Somuk BT, Soyalic H, Yılmaz B, Taskin A, Bilinc H, Aksoy N. Paraoxonase Activity and Oxidative Status in Patients with Tinnitus. J Audiol Otol 2016; 20:17-21. [PMID: 27144229 PMCID: PMC4853894 DOI: 10.7874/jao.2016.20.1.17] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 12/17/2015] [Accepted: 01/21/2016] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND OBJECTIVES The aim of this study was to investigate serum paraoxanase-1 (PON) activity, total oxidant status (TOS), total antioxidant status (TAS), and the oxidative stress index (OSI) in tinnitus; and to compare the results with data from healthy subjects. SUBJECTS AND METHODS A total of 114 subjects-54 patients with tinnitus and 60 healthy controls were enrolled in this study. Serum PON activity, TOS, TAS, and OSI levels were measured. RESULTS In the tinnitus group, TAS, and PON were significantly lower than in the control group (p<0.001). However, the TOS, and OSI levels were significantly higher in the tinnitus group than in the control group (p<0.001). CONCLUSIONS According to the data obtained from the present study, patients with tinnitus were exposed to potent oxidative stress. Oxidative stress may be the key contributing factor to the pathogenesis of tinnitus.
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Affiliation(s)
- Sema Koç
- Department of Otorhinolaryngology, Antalya Education and Research Hospital, Antalya, Turkey
| | - Servet Akyüz
- Department of Otorhinolaryngology, Gaziosmanpasa University School of Medicine, Tokat, Turkey
| | - Battal Tahsin Somuk
- Department of Otorhinolaryngology, Gaziosmanpasa University School of Medicine, Tokat, Turkey
| | - Harun Soyalic
- Department of Otorhinolaryngology, Gaziosmanpasa University School of Medicine, Tokat, Turkey
| | - Beyhan Yılmaz
- Department of Otorhinolaryngology, Dicle University School of Medicine, Diyarbakır, Turkey
| | - Abdullah Taskin
- Department of Biochemistry, Harran University School of Medicine, Sanliurfa, Turkey
| | - Hasan Bilinc
- Department of Biochemistry, Harran University School of Medicine, Sanliurfa, Turkey
| | - Nurten Aksoy
- Department of Biochemistry, Harran University School of Medicine, Sanliurfa, Turkey
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Annagür A, Örs R, Altunhan H, Kurban S, Ertuğrul S, Konak M, Uygun SS, Pekcan S, Erbay E, Mehmetoğlu İ. Total antioxidant and total oxidant states, and serum paraoxonase-1 in neonatal sepsis. Pediatr Int 2015; 57:608-13. [PMID: 25488411 DOI: 10.1111/ped.12557] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 11/27/2014] [Indexed: 01/05/2023]
Abstract
BACKGROUND Paraoxonase-1 (PON-1) is an enzyme with a glycoprotein structure that depends on calcium and which is located in serum high-density lipoprotein (HDL). The aim of this study was to evaluate PON-1, and oxidant/antioxidant state, before and after treatment for neonatal sepsis, and to determine the usability of PON-1 in neonatal sepsis treatment. METHODS A total of 35 neonatal sepsis patients and 35 healthy controls were included in the study. Activity of PON-1, total oxidant state (TOS) and total antioxidant state (TAS) were measured and oxidative stress index (OSI) was calculated. RESULTS In the neonatal sepsis patients, pre-treatment TAS, TOS and OSI were significantly higher than the post-treatment levels (P < 0.0001, P < 0.0001 and P < 0.0001, respectively), and PON-1 was significantly lower (P < 0.0001). Similarly, pre-treatment TAS, TOS and OSI in the sepsis group were also significantly higher than in the control group (P < 0.0001, P < 0.0001 and P < 0.0001, respectively) and PON-1 was significantly lower (P < 0.0001). Post-treatment TAS in the sepsis group was significantly higher than in the control group (P = 0.009), whereas post-treatment TOS, OSI and PON-1 in the sepsis group were not significantly different to the control group (P = 0.078, P = 0.597 and P = 0.086, respectively). CONCLUSION Low serum PON-1 was found in neonatal sepsis. Serum PON-1 is thought to be a useful biomarker to evaluate the effectiveness of treatment and recovery in neonatal sepsis.
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Affiliation(s)
- Ali Annagür
- Department of Neonatology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Rahmi Örs
- Department of Neonatology, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - Hüseyin Altunhan
- Department of Neonatology, Faculty of Medicine, Abant Izzet Baysal University, Bolu, Turkey
| | - Sevil Kurban
- Department of Clinical Biochemistry, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - Sabahattin Ertuğrul
- Department of Neonatology, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - Murat Konak
- Department of Neonatology, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - Saime Sündüz Uygun
- Department of Neonatology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Sevgi Pekcan
- Department of Neonatology, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - Ekrem Erbay
- Department of Clinical Biochemistry, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - İdris Mehmetoğlu
- Department of Clinical Biochemistry, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
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Turan M, Ucler R, Aslan M, Kalkan F, Taskın A, Garca MF, Cankaya H. Serum paraoxonase and arylesterase activities in patients with chronic otitis media. Redox Rep 2015; 20:241-5. [PMID: 25968808 DOI: 10.1179/1351000215y.0000000012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVES Paraoxonase-1 (PON1) prevents oxidative stress by inhibiting the oxidation of cell membrane lipids by the reactive oxygen species that form during acute and chronic inflammation. The aim of this study was to investigate serum PON1 activity and oxidative stress in patients with chronic otitis media (COM). METHODS Fifty consecutive patients with COM and 55 controls were enrolled in the present study. The patients were divided into two groups according to the presence of cholesteatoma. The serum PON1 arylesterase activities and lipid hydroperoxide (LOOH) levels were determined. RESULTS Serum paraoxonase and arylesterase activities were significantly lower in the COM patients than in the controls (P < 0.001 for all comparisons), whereas the LOOH levels were significantly higher (P < 0.001). DISCUSSION These results indicated that a lower level of PON1 activity was associated with an oxidant-antioxidant imbalance. In addition, decreased PON1 activity may play an important role in the pathophysiology of COM.
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Topal O, Kulaksızoglu S, Erbek SS. Oxidative stress and nasal polyposis: does it affect the severity of the disease? Am J Rhinol Allergy 2015; 28:e1-4. [PMID: 24717866 DOI: 10.2500/ajra.2014.28.3963] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Nasal polyposis (NP) is a chronic inflammatory disease and the waste products of this inflammation are reactive oxygen species composed of free radicals. Changes in oxidative status have already been revealed in NP. The aim of this study was to investigate the effect of oxidative status to the severity of the disease and the quality of life. METHODS The study group included 24 patients with NP and 20 controls. The Turkish version of the Rhinosinusitis Disability Index, visual analog scale (VAS), polyp stage, computed tomography (CT) score, and the eosinophilic cationic protein (ECP) levels in nasal lavage (NAL) fluid were used to assess the severity of the disease. Malondialdehyde, nitric oxide (NO), and the total antioxidant status (TAS) levels in NAL fluids were measured representing the oxidative stress. RESULTS NO values were correlated with nasal congestion (p = 0.031). TAS values were correlated with nasal obstruction (p = 0.039). ECP values showed correlation with all the nasal obstruction (p = 0.003), congestion (p = 0.009), rhinorrhea (p = 0.009), and VAS scores (p = 0.039). CONCLUSION In NP, ECP levels detected in NAL fluid were significantly high and were correlated with the severity of the disease. Moreover, the severity of oxidative stress, in the forms of TAS and NO, is significantly correlated with the severity of the nasal obstruction and congestion, respectively.
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Affiliation(s)
- Ozgul Topal
- Department of Otolaryngology, Baskent University, Faculty of Medicine, Konya, Turkey
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Göknar N, Oktem F, Arı E, Demir AD, Torun E. Is oxidative stress related to childhood urolithiasis? Pediatr Nephrol 2014; 29:1381-6. [PMID: 24526098 DOI: 10.1007/s00467-014-2773-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 01/10/2014] [Accepted: 01/22/2014] [Indexed: 11/30/2022]
Abstract
BACKGROUND Urolithiasis is a common condition in pediatric populations in Turkey. The role of oxidative stress in renal stone formation in pediatric patients has not been reported to date. The aim of this study was to assess oxidative stress in childhood urolithiasis. METHODS Seventy-four children diagnosed with urolithiasis and 72 healthy control subjects were enrolled in the study. Kidney stone formers were evaluated by analysis of metabolic conditions related to urolithiasis, such as hypercalciuria, hyperoxaluria, hypocitraturia and hyperuricosuria. Urine total antioxidant status (TAS), and total oxidant status (TOS) were measured, and oxidative stress index (OSI) was calculated as an indicator of the degree of oxidative stress. RESULTS Among the stone formers, metabolic analyses revealed that 30 % had hypercalciuria, 45 % had hypocitraturia, 6 % had hyperoxaluria and 40 % had hyperuricosuria. Elevated levels of the renal tubular damage marker urinary N-acetyl- beta-D-glucosaminidase (NAG) was elevated in 25 % of the patient group, but microalbuminuria was not detected. Total oxidant status and total antioxidant status were significantly higher in stone formers than in the controls (p = 0.023 and 0.004, respectively). In addition, urinary NAG was significantly correlated with TOS (r = 0.427, p = 0.019). CONCLUSIONS The results of this study show that oxidative stress may play an important role in the pathogenesis of pediatric stone formers.
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Affiliation(s)
- Nilufer Göknar
- Department of Pediatric Nephrology, Bezmialem Vakif University Medical Faculty, Istanbul, Turkey
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Savas E, Aksoy N, Pehlivan Y, Sayiner ZA, Öztürk ZA, Tabur S, Örkmez M, Onat AM. Evaluation of oxidant and antioxidant status and relation with prolidase in systemic sclerosis. Wien Klin Wochenschr 2014; 126:341-6. [DOI: 10.1007/s00508-014-0534-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Accepted: 03/02/2014] [Indexed: 10/25/2022]
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Türkeş C, Söyüt H, Beydemir Ş. Effect of calcium channel blockers on paraoxonase-1 (PON1) activity and oxidative stress. Pharmacol Rep 2014; 66:74-80. [DOI: 10.1016/j.pharep.2013.08.007] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 07/01/2013] [Accepted: 08/02/2013] [Indexed: 12/25/2022]
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Gu C, Zhao L, Han L, Song X, Qu H, Qin G. The Effect of Soybean Trypsin Inhibitor on the Generation of Oxygen Free Radical in Pancreas of Mice during Different Growth Periods. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2014. [DOI: 10.3136/fstr.20.431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Garca MF, Demir H, Turan M, Bozan N, Kozan A, Belli ŞB, Arslan A, Cankaya H. Assessment of adenosine deaminase (ADA) activity and oxidative stress in patients with chronic tonsillitis. Eur Arch Otorhinolaryngol 2013; 271:1797-802. [DOI: 10.1007/s00405-013-2843-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 11/05/2013] [Indexed: 11/24/2022]
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Serum myeloperoxidase activity, total antioxidant capacity and nitric oxide levels in patients with chronic otitis media. J Membr Biol 2013; 246:519-24. [PMID: 23756625 PMCID: PMC3695689 DOI: 10.1007/s00232-013-9561-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 05/06/2013] [Indexed: 11/07/2022]
Abstract
It has been suggested that oxidative stress may play an important role in the pathogenesis of chronic otitis media (COM), but the role of oxidative stress in the pathogenesis of COM has not yet been fully explored. Therefore, the aim of this study was to investigate serum myeloperoxidase (MPO) activity, 4-hydroxynonenal (4-HNE), malondialdehyde (MDA), total antioxidant capacity (TAC) and nitric oxide (NO) in patients with COM. Sixty-one patients with COM and 30 controls were enrolled in the present study. Patients were divided into two groups according to the presence (n = 21) or absence (n = 40) of cholesteatoma. Serum MPO activity and 4-HNE, MDA and NO levels were significantly higher in patients with COM than controls (for all, p < 0.001), while TAC levels were significantly lower (for all, p < 0.001). Serum MPO activity and MDA, 4-HNE and NO levels were significantly higher in patients with cholesteatoma than in those without cholesteatoma, while TAC levels were significantly lower; but the difference between groups was not statistically significant (p > 0.05). Increased oxidative stress seems to be associated with decreased antioxidant levels in patients with COM. Thus, increased oxidative stress may play a role in the pathogenesis of COM. It is believed that the administration of antioxidant vitamins such as A, C and E may be useful in preventing and treating COM.
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Baysal E, Aksoy N, Kara F, Taysi S, Taşkın A, Bilinç H, Cevik C, Celenk F, Kanlıkama M. Oxidative stress in chronic otitis media. Eur Arch Otorhinolaryngol 2012; 270:1203-8. [PMID: 22711004 DOI: 10.1007/s00405-012-2070-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Accepted: 05/29/2012] [Indexed: 11/25/2022]
Abstract
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.
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Affiliation(s)
- Elif Baysal
- Department of Otolaryngology, Medical Faculty, Gaziantep University, Sahinbey, Gaziantep 27070, Turkey.
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