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    Dig Dis Sci. 2008 Mar;53(3):622-9. Epub 2007 Aug 24.

    Interleukin-10 (-819 C/T) and tumor necrosis factor-alpha (-308 G/A) gene variants influence gastritis and lymphoid follicle development.

    Achyut BR, Tripathi P, Ghoshal UC, Moorchung N, Mittal B.

    Department of Medical Genetics, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India.

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    Helicobacter pylori (H. pylori) causes gastritis, development of lymphoid follicles and later monoclonal mucosa-associated lymphoid tissue (MALT) lymphoma. We evaluated the association of tumor necrosis factor (TNF)-alpha (-308 G/A) and IL-10 (-819 C/T) gene polymorphisms with gastritis and lymphoid follicle formation. H. pylori infection was detected using modified Giemsa staining and IgG anti-CagA enzyme-linked immunosorbent assay (ELISA). One hundred and thirty patients with non-ulcer dyspepsia (NUD) and 200 healthy age-matched controls were genotyped for TNF-alpha and IL-10 polymorphisms using polymerase chain reaction-restriction fragment-length polymorphism (PCR-RFLP). Subjects with IL-10 -819 T allele [patients (46.5%) versus controls (35.7%), p = 0.006, OR = 1.56, 95% CI = 1.14-2.15] were at risk of gastritis. Infection with H. pylori was more often associated with lymphoid follicles formation than its absence (46% versus 22%, p = 0.009). TNF-alpha polymorphism did not influence gastritis but patients with TNF-alpha -308 A allele carriers showed >2 fold risk of lymphoid follicle formation [presence (26%) versus absence (11.25%), p = 0.029, OR = 2.8; 95% CI = 1.09-7.08]. There was a trend towards association of lymphoid follicles and TNF-alpha -308 A allele carriers with H. pylori infection than without (58.5% versus 22.2%; p = 0.064). IL-10 -819 T and TNF-alpha -308 A alleles may increase risk of gastritis and lymphoid follicle formation.

    PMID: 17717744 [PubMed - indexed for MEDLINE]

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