TITLE:
Oxidative Stress and Reduced Vitamins C and E Levels Are Associated with Multi-Drug Resistant Tuberculosis
AUTHORS:
John A. Alli, Aderemi O. Kehinde, Ayokulehin M. Kosoko, Olusegun G. Ademowo
KEYWORDS:
Oxidative Stress; Pulmonary Tuberculosis; Health Care Facility; Nigeria
JOURNAL NAME:
Journal of Tuberculosis Research,
Vol.2 No.1,
March
21,
2014
ABSTRACT: Background: Tuberculosis (TB) still remains a major cause of morbidity and mortality worldwide. In Nigeria, there is little information on antioxidant status of TB patients. In this study, effects of oxidative stress markers and vitamins C and E were investigated in pulmonary TB patients at-tending a health care facility in Nigeria. Methods: Sputum specimens were processed for acid-fast bacilli (AFB) while rifampicin resistance was determined by GeneXpert/Rif assay. Patients were screened for HIV after adequate counselling. Assays for hydrogen peroxide (H2O2), malondialde- hyde (MDA), protein carbonyl (PC), myeloperoxidase (MPx), xanthine oxidase (XO), catalase (CAT), superoxide dismutase (SOD), reduced glutathione (GSH), glutathione S-transferase (GST), glu-tathione peroxidase (GPx), α-tocopherol and ascorbic acid were estimated using standard me- thods. Results: Of the 83 recruited subjects, 29 (34.9%) were AFB negative, 30 (36.1%) were AFB positive while 24 (29.0%) were positive for rifampicin resistance. Overall, HIV prevalence was 6.0% while higher rate of 16.7% was found among the rifampicin resistant subjects. Plasma concentrations of H2O2, MDA and PC and also MPx and XO activities were significantly higher among rifampicin resistant subjects compared with AFB positive and AFB negative groups (P