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HLA-DQA1 alleles and the presence of Helicobacter pylori antibodies

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Recent reports suggest that the HLA-DQA1 gene may be important in determining susceptibility to and outcome of Helicobacter pylori infection. To determine if there is an association between HLA-DQA1 alleles and H. pylori antibodies, DQA1 alleles and H. pylori-specific antibodies were determined in 199 random subjects of Finnish origin (mean age 43 years, range 22–69 years). H. pylori-specific class IgG antibodies were measured using the EIA method (Pyloriset-EIA-G, Orion Diagnostica, Espoo, Finland). HLA-DQA1 typing was carried out using PCR-SSP (PCR with sequence-specific primers). There were 64 subjects with H. pylori-specific class IgG antibodies (ab+) and 135 subjects without H. pylori-specific class IgG antibodies (ab–). Gene and phenotype frequencies of HLA-DQA1 alleles were similar in the ab+ and ab– subjects (P = NS). The data suggest that no single HLA-DQA1 allele is associated with the presence of serum antibodies against H. pylori.
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Document Type: Original Article

Affiliations: 1: Department of Medical Microbiology, University of Oulu, Oulu, Finland., 2: Division of Microbiology, University Hospital of Oulu, Finland.

Publication date: 01 February 1999

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