RESUMO
Complex association analysis of copaxone (glatiramer acetate) immunotherapy efficacy with allelic polymorphism in the number of immune response genes, which encode interferone beta (IFNB1), transforming growth factor beta1 (TGFB1), interferone gamma (IFNG), tumor necrosis factor (TNF), interferon alpha/beta receptor 1 (IFNAR1), CC chemokine receptor 5 (CCR5), interleukin 7 receptor alpha subunit (IL7RA), cytotoxic T-lymphocyte antigen 4 (CTLA4) and HLA class II histocompatibility antigen beta chain (DRB1) was performed with APSampler algorithm for 285 multiple sclerosis patients of Russian ethnicity. The results show evidence for the contribution of polymorphic variants in CCRS, DRB1, IFNG, TGFB1, IFNAR1, IL7RA and, probably, TNF and CTLA4 genes to copaxone treatment response. Single alleles of CCR5 and DRB1 genes are reliably associated with treatment efficacy. Carriage of allelic variants of other above mentioned genes contribute with reliable effect to copaxone treatment response as part of bi- and three-allelic combinations only. Present investigation may support basis toward the future possibility of prognostic test realization, which can provide a personal choice of immunomodulatory treatment for a patient with multiple sclerosis.
Assuntos
Adjuvantes Imunológicos/uso terapêutico , Esclerose Múltipla/tratamento farmacológico , Esclerose Múltipla/genética , Peptídeos/uso terapêutico , Adjuvantes Imunológicos/farmacocinética , Biomarcadores Farmacológicos , Antígeno CTLA-4/genética , Frequência do Gene , Estudos de Associação Genética , Acetato de Glatiramer , Cadeias HLA-DRB1/genética , Humanos , Interferon beta/genética , Interferon gama/genética , Subunidade alfa de Receptor de Interleucina-7/genética , Peptídeos/farmacocinética , Polimorfismo de Nucleotídeo Único , Receptores CCR5/genética , Fator de Crescimento Transformador beta1/genética , Fator de Necrose Tumoral alfa/genéticaRESUMO
Proinflammatory cytokines Interleukin-6 (IL-6), Interferon-gamma (IFNg) and Tumor necrosis factor (TNF) are known as participants of inflammation and play an important role in pathogenesis of multiple sclerosis (MS). Based on literature data about influence of SNPs G(-308)A of TNF gene, A(+874)T of IFNG gene and G(-174)C of IL-6 gene on production of these cytokines, we investigated association of these polymorphic sites with MS. Linkage and association of alleles of these genes with MS was analyzed by transmission disequilibrium test (TDT). In investigated group of 104 nuclear families of Russian ethnicity it was found that TNF* (-308)A allele transmitted from healthy heterozygous parents to affected children more frequently (p = 0.01). Linkage/association of IFNG and IL-6 alleles with MS was not revealed. Thus, data obtained indicate the participation of TNF gene in MS susceptibility in Russians.
Assuntos
Alelos , Interferon gama/genética , Interleucina-6/genética , Desequilíbrio de Ligação , Esclerose Múltipla/genética , Polimorfismo de Nucleotídeo Único , Fator de Necrose Tumoral alfa/genética , Adolescente , Adulto , Criança , Feminino , Predisposição Genética para Doença/etnologia , Predisposição Genética para Doença/genética , Humanos , Masculino , Esclerose Múltipla/etnologia , Federação RussaRESUMO
The multiple sclerosis is a complex disease of the central nervous system with the pronounced hereditary predisposition. The purpose of our research consisted in acknowledgement of the assumption on importance of apolipoprotein E gene (APOE) polymorphism in exon 4 in development of the multiple sclerosis in ethnic Russians. Research was lead on the samples independently collected in Moscow (106 patients and 189 persons of control group), Sverdlovsk area (54 and 109, accordingly) and republic Bashkortostan (119 and 285, accordingly). 2059C/T and 2197C/T polymorphisms of APOE gene, which determine aminoacid substitutions C112R and R158C in apolipoprotein E, were determined by polymerase chain reaction with the following restriction analysis of amplicons. There was not detected statistically significant distinctions on genotypes frequencies and alleles frequencies between control group and group of patients with multiple sclerosis. APOE*4 allele is not assosiated with risk of development of the multiple sclerosis at ethnic Russians.