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Role of Measurement of Antioxidant Enzymes in Evaluation of Antioxidant Therapy in Tobacco Abusers with Oral Leukoplakia

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Abstract

Antioxidants are widely used in chemoprevention of malignancy. Numerous studies in medical literature have reported the evaluation of this treatment protocol by indirect methodology—epidemiology, invitro studies, pharmacology and animal models etc. However, there is a paucity of literature on the measurement of antioxidant enzymes as a parameter for assessing the outcome of antioxidant therapy. This study explores the efficacy and outcome of antioxidant enzyme assay in relation to antioxidant therapy in tobacco abusers, hitherto unreported in medical literature. A prospective cohort study with control in 50 patients carried out at a tertiary care teaching Institution (Institute of Medical Sciences, Banaras Hindu University, Varanasi, India). Out of these patients, 10 patients acted as control, rest 40 patients—all tobacco users in some form, were divided into three groups on the basis of histopathological grading of dysplasia—no dysplasia, mild or moderate dysplasia. The levels of Lipid peroxidase (LPO), Superoxide dismutase (SOD) and Catalase (CAT) in mucosa and serum were assayed in each group, and re-evaluated at the end of 3 months after intervention with antioxidant treatment. To detect any alteration in degree of dysplasia a repeat biopsy was also done at the end of 3 months. The results were statistically analysed using paired t test. A statistically significant decrease in level of LPO and SOD, and an increase in CAT levels were recorded both in mucosa and serum. However, no change in dysplasia and no new case of dysplasia were observed. Further, antioxidant treatment was continued for a year and the final out come of the lesion was assessed by “Carter’s criteria”. A final success rate of 74.19% was recorded in terms of partial or complete regression of the lesion. This study confirms the therapeutic efficacy of antioxidants in oral leukoplakia, and cites the importance of LPO, SOD and CAT in evaluating the efficacy of antioxidant treatment. However, the study failed to elucidate any relationship between enzyme measurement and the final outcome of the lesion.

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Authors and Affiliations

  1. Department Of Otorhinolaryngology, Institute of Medical Sciences & Sir Sunder Lal Hospital, Banaras Hindu University, Varanasi, 221005, UP, India

    R. K. Jain, Gautam Bir Singh, Arvinder Pal Singh & Sandeep K. Jha

  2. Department of Otorhinolaryngology, Lady Hardinge Medical College & Associated Hospitals, New Delhi, 110001, India

    Gautam Bir Singh

  3. Department of Pharmacology, Institute of Medical Sciences & Sir Sunder Lal Hospital, Banaras Hindu University, Varanasi, 221005, UP, India

    R. K. Goel

  4. Department of Pathology, Institute of Medical Sciences & Sir Sunder Lal Hospital, Banaras Hindu University, Varanasi, 221005, UP, India

    N. C. Aryya

  5. House no: 1433/Sector: 15 (National Capital Region), Faridabad, 121007, Haryana, India

    Gautam Bir Singh

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  1. R. K. Jain
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Correspondence to Gautam Bir Singh.

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Jain, R.K., Singh, G.B., Singh, A.P. et al. Role of Measurement of Antioxidant Enzymes in Evaluation of Antioxidant Therapy in Tobacco Abusers with Oral Leukoplakia. Indian J Otolaryngol Head Neck Surg 63, 336–342 (2011). https://doi.org/10.1007/s12070-011-0266-y

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