title: Interleukin-10 (-819 C/T) and tumor necrosis factor-alpha (-308 G/A) gene variants influence gastritis and lymphoid follicle development.
abstract: 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.
authors: Department of Medical Genetics, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India.
authors: B R
authors: BR
authors: Achyut
authors: Priya
authors: P
authors: Tripathi
authors: Uday Chand
authors: UC
authors: Ghoshal
authors: Nikhil
authors: N
authors: Moorchung
authors: Balraj
authors: B
authors: Mittal
mesh_terms: D000328:Adult; D000907:Antibodies, Bacterial / Q000097:blood; D000942:Antigens, Bacterial / Q000276:immunology; D001426:Bacterial Proteins / Q000276:immunology; D016022:Case-Control Studies; D005260:Female; D005753:Gastric Mucosa / Q000276:immunology / Q000382:microbiology / Q000473:pathology*; D005756:Gastritis / Q000209:etiology / Q000235:genetics* / Q000473:pathology; D016481:Helicobacter Infections / Q000276:immunology / Q000473:pathology*; D016480:Helicobacter pylori; D006801:Humans; D016753:Interleukin-10 / Q000235:genetics*; D008214:Lymphocytes / Q000473:pathology; D018442:Lymphoma, B-Cell, Marginal Zone / Q000235:genetics; D008297:Male; D008679:Metaplasia / Q000235:genetics; D008875:Middle Aged; D009504:Neutrophils / Q000473:pathology; D020641:Polymorphism, Single Nucleotide; D013274:Stomach Neoplasms / Q000235:genetics; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics*
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D001426:Bacterial Proteins; D014409:Tumor Necrosis Factor-alpha; C080866:cagA protein, Helicobacter pylori; D016753:Interleukin-10
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