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  • Title: Cytotoxic T Lymphocyte Antigen 4 Gene +49 A/G (rs231775) Polymorphism and Susceptibility to Systemic Lupus Erythematosus.
    Author: Kishk RM, Abdellatif MA, Eldesouki RE, Fawzy M, Abdelhady SA, Fouad MM.
    Journal: Curr Rheumatol Rev; 2021; 17(2):247-251. PubMed ID: 33213350.
    Abstract:
    AIM: To assess the probable role of +49AG polymorphism in susceptibility to SLE in an Egyptian population. BACKGROUND: Systemic lupus erythematosus (SLE) is a compound inflammatory chronic disease distinguished through the release of autoantibodies. Cytotoxic T lymphocyte associated antigen-4 is a main down controller of T-cell response; its dysregulation could affect SLE pathogenesis by altered T cells activation to self-antigens. OBJECTIVES: To evaluate the CTLA-4 +49AG allelic and genotype frequency in a sample of the Egyptian population and correlate them with disease susceptibility and clinical severity. MATERIALS AND METHODS: Including 100 patients with SLE and 100 healthy controls (age and gender matched), CTLA-4 exon 1 49 A>G Genotyping was done using Real-Time PCR. RESULTS: No difference was noticed in genotype or allele distributions of the studied polymorphism between both groups. Similar genotypes and allele frequencies were established for the 2 groups after their stratification by the age of disease onset, clinical course, or severity. CONCLUSION: CTLA-4 +49AG gene polymorphism is not linked with the liability to develop SLE in the studied Egyptian population. Yet it is significantly related to disease severity.
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