HLA-DR antigen frequencies in Mexican patients with dengue virus infection: HLA-DR4 as a possible genetic resistance factor for dengue hemorrhagic fever
| Autor: | Eduardo Lazcano, Hilda Rangel, Jorge A. Ruiz-Morales, Lorena Higuera, Maribel Acosta, Guadalupe Hernández-Pacheco, Cynthia Villarreal-Garza, Teresa Cutiño-Moguel, Curtis LaFleur, Gilberto Vargas-Alarcón, Julio Granados, Raymunda Figueroa, Celso Ramos |
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| Rok vydání: | 2002 |
| Předmět: |
Adult
Male musculoskeletal diseases Adolescent Dengue hemorrhagic fever Immunology Locus (genetics) Human leukocyte antigen Dengue virus Biology Logistic regression medicine.disease_cause Major histocompatibility complex Dengue fever HLA-DR4 Antigen medicine Humans Immunology and Allergy Genetic Predisposition to Disease Severe Dengue Child Alleles HLA-DR Antigen virus diseases HLA-DR Antigens General Medicine Middle Aged medicine.disease Virology biology.protein Female HLA-DRB1 Chains |
| Zdroj: | Human Immunology. 63:1039-1044 |
| ISSN: | 0198-8859 |
| Popis: | The human leukocyte antigen DRB1 locus (HLA-DRB1) was typed in genomic DNA extracted from whole blood samples of 34 Mexican dengue hemorrhagic fever (DHF) patients and 47 dengue fever (DF) patients, by polymerase chain reaction–sequence-specific oligonucleotide reverse dot blot. HLA-DRB1*04 was negatively associated with risk of DHF (OR 0.31, 95% CI 0.11–0.85). HLA-DR4 homozygous individuals were 11.6 times less likely to develop DHF in comparison to DR4 negative persons (OR 0.08, 95% CI 0.01–0.75). After adjusting for gender and infection type by logistic regression, DR4 positive individuals were 3.6 times less likely to develop DHF than DR4 negative persons (OR 0.28, 95% CI 0.12–0.66). A secondary dengue virus infection was also positively linked with DHF risk (OR 2.89, 95% CI 0.92–9.07). This data suggests that genes of the major histocompatibility complex play a major role in the susceptibility and/or resistance to develop DHF. In Mexicans, HLA-DR4 may be a genetic factor that is protective against DHF. Because HLA-DR4 has been positively selected in Latin American populations, these results may apply also to other similar ethnic groups, particularly those with high percentages of admixture with indigenous Amerindian genes. |
| Databáze: | OpenAIRE |
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