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      The Serum and salivary level of malondialdehyde, vitamins A, E, and C in patient with recurrent aphthous stomatitis

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          Abstract

          Background:

          Oral recurrent aphthous stomatitis (RAS) is a chronic inflammatory disease affected oral mucosa which has afflicted about 20% of the society. Etiology of this disease is unknown. Three main factors influencing aphthous stomatitis are genetic, hematologic, and immunologic factors. Another proposed factor that may be considered in etiology of aphthous ulcer is oxidant, anti-oxidant imbalance in the body. The purpose of this study was the evaluation of lipid peroxide enzyme as an important oxidant agent and anti-oxidant vitamins in the saliva and serum of the patients suffering from RAS and compare it to healthy people.

          Materials and Methods:

          In this cross-sectional, descriptive – analytical study, 25 patients suffering from RAS were compared to 24 healthy individuals. Applying enzyme-linked immunosorbent assay method, the amount of malondialdehyde (MDA) as well as Vitamins A, E, and C were measured in the saliva and serum of two groups. The results were analyzed by Statistical Package for the Social Sciences (SPSS) software version (11.5), t-test and χ 2.

          Results:

          No significant difference was detected between salivary and serum levels of antioxidant vitamins (A, E, and C) and MDA in both experimental groups ( P > 0.05).

          Conclusion:

          According to the results of this study, RAS is not associated with oxidant–antioxidant imbalance in the body. However, it seems quite necessary to carry out more studies in this area.

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          Most cited references19

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          Free radicals, antioxidants, and human disease: curiosity, cause, or consequence?

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            Plasma malondialdehyde as biomarker for oxidative stress: reference interval and effects of life-style factors.

            Malondialdehyde (MDA) is one of the most frequently used indicators of lipid peroxidation. To generate reliable reference intervals for plasma malondialdehyde (P-MDA), a reference sample group was established in Funen, Denmark. The group consisted of 213 individuals (107 men, 106 women), ages 20-79 years. P-MDA was measured in EDTA-treated plasma after derivatization by thiobarbituric acid (TBA) and separation on HPLC. UV detection was performed at 532 nm. A reference interval was calculated as recommended by IFCC with REFVAL 3.42. The estimated reference limits (0.025 and 0.975 fractals) for the group were 0.36 and 1.24 mumol/L. The data were analyzed for gender- and age-related differences. Analysis of variance showed no interaction between gender and age, but separate analyses showed an independent effect of gender (P = 0.03), but not of age (P = 0.11). Daily smokers had a slightly higher average concentration of P-MDA than nonsmokers (P = 0.05), and P-MDA correlated with daily exposure to cigarette smoke (r = 0.162; P = 0.03). A positive correlation was also demonstrated between P-MDA and weekly alcohol consumption (r = 0.153; P = 0.03). Within-subject and day-to-day variations of P-MDA indicated that the potential of P-MDA as a biomarker for individuals is questionable. However, on a group basis, the present data support that P-MDA may be a potential biomarker for oxidative stress.
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              The antioxidant capacity of saliva.

              Saliva, a heterogeneous fluid comprising proteins, glycoproteins, electrolytes, small organic molecules and compounds transported from the blood, constantly bathes the teeth and oral mucosa. It acts as a cleansing solution, an ion reservoir, a lubricant and a buffer. In addition to its other host-protective properties, saliva could constitute a first line of defence against free radical-mediated oxidative stress, since the process of mastication and digestion of ingested foods promotes a variety of reactions, including lipid peroxidation. Moreover, during gingival inflammation, gingival crevicular fluid flow increases the change of saliva composition with products from the inflammatory response; this, in turn, could have some rôle in controlling and/or modulating oxidative damages in the oral cavity. This is the reason why the antioxidant capacity of saliva has led to increasing interest, and the development of techniques suitable for saliva antioxidant evaluation. Here, we review the current peer-reviewed literature concerning the nature and characteristics of free radicals, reactive oxygen species, oxidants, pro-oxidants and antioxidants in saliva, especially pro-oxidant and antioxidant features, as well as current methods for assessing the antioxidant capacity of saliva. In the last decade, several methods have been developed for assaying the antioxidant activity of saliva, indicating an increasing interest of researchers and clinicians. Unfortunately, systematic studies of saliva are still lacking, even in healthy populations.
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                Author and article information

                Journal
                Adv Biomed Res
                Adv Biomed Res
                ABR
                Advanced Biomedical Research
                Medknow Publications & Media Pvt Ltd (India )
                2277-9175
                2277-9175
                2014
                06 December 2014
                : 3
                : 246
                Affiliations
                [1]Department of Oral Medicine, Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
                Author notes
                Address for correspondence: Dr. Atefeh Tavangar, Department of Oral Medicine, Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran. E-mail: Tavangar@ 123456dnt.mui.ac.ir
                Article
                ABR-3-246
                10.4103/2277-9175.146366
                4283250
                25590024
                3b2d9677-5b1f-478a-87c0-a8b786f87e14
                Copyright: © 2014 Khademi.

                This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 29 October 2012
                : 26 February 2013
                Categories
                Original Article

                Molecular medicine
                lipid peroxidase,malondialdehyde,recurrent aphthous stomatitis,saliva,vitamin
                Molecular medicine
                lipid peroxidase, malondialdehyde, recurrent aphthous stomatitis, saliva, vitamin

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