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Free Content Association between the CD14 gene C-159T polymorphism and serum soluble CD14 with pulmonary tuberculosis

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BACKGROUND: Functional C-159T polymorphism in the promoter region of the CD14 lipopolysaccharide receptor has been reported to be associated with the development of tuberculosis (TB).

OBJECTIVE: To assess the association of CD14 C-159T polymorphism and serum soluble CD14 (sCD14) levels with pulmonary tuberculosis (TB) in an Iranian population living in a TB-endemic area.

DESIGN: A case-control study was performed prospectively on 120 newly diagnosed pulmonary TB patients and 131 healthy subjects. C-159T polymorphism was performed using amplification refractory mutation system polymerase chain reaction (ARMS-PCR). Concentrations of sCD14 were measured in serum samples using enzyme-linked immunosorbent assay.

RESULTS: The genotype frequencies of C-159T polymorphism differed significantly between TB patients and controls (P = 0.006). The risk of TB was 2.3-fold greater in individuals with the T-allele (CT + TT) in comparison to those without (OR 2.3, 95%CI 1.2–4.3, P = 0.006). Mean total sCD14 was significantly increased in the serum of patients with newly diagnosed pulmonary TB (mean ± SD = 3177 ± 751 ng/ml) compared to healthy controls (mean ± SD = 2955 ± 424 ng/ml, P < 0.004).

CONCLUSION: These data indicate that the C-159T polymorphism of the CD14 gene is associated with TB; serum sCD14 levels were higher in TB patients in a sample of the Iranian population.
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Keywords: ELISA; Mycobacterium tuberculosis; T-ARMS–PCR; TT genotype

Document Type: Research Article

Affiliations: 1: Infectious Diseases and Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, Iran 2: Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran; Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran 3: Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran

Publication date: 2012-10-01

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  • The International Journal of Tuberculosis and Lung Disease publishes articles on all aspects of lung health, including public health-related issues such as training programmes, cost-benefit analysis, legislation, epidemiology, intervention studies and health systems research. The IJTLD is dedicated to the continuing education of physicians and health personnel and the dissemination of information on tuberculosis and lung health world-wide.

    Certain IJTLD articles are selected for translation into French, Spanish, Chinese or Russian. They are available on the Union website

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