Data/hora: 10/06/2024 07:36:48

Provedor de dados: 	56	
País: 	Brazil	
Título: 	The effect of 677C&gt;T and 1298A&gt;C MTHFR polymorphisms on sulfasalazine treatment outcome in rheumatoid arthritis	
Autores: 	Pawlik,A.; Kurzawski,M.; Gawronska-Szklarz,B.; Gornik,W.; Dziedziejko,V.; Safranow,K.; Juzyszyn,Z.; Drozdzik,M.	
Data: 	2009-07-01	
Ano: 	2009	
Palavras-chave: 	MTHFR; Polymorphisms; Sulfasalazine; Rheumatoid arthritis.	
Resumo: 	Despite the availability of several new agents for the treatment of rheumatoid arthritis (RA), sulfasalazine remains the mainstay because of both cost and experience with its use. Methylenetetrahydrofolate reductase (MTHFR) is involved in folate metabolism and several polymorphisms have been described in the MTHFR gene. Of these, the 677C&gt;T and 1298A&gt;C polymorphisms have been associated with altered enzyme activity. To examine the association between 677C&gt;T and 1298A&gt;C MTHFR polymorphisms and sulfasalazine efficacy for the treatment of RA, a total of 117 RA patients treated with sulfasalazine (1 g daily; duration of treatment 17 ± 5 months) were analyzed. The 677C&gt;T and 1298 A&gt;C polymorphisms were detected using a PCR-RFLP method. RA was diagnosed according to the criteria of the American College of Rheumatology (ACR). The remission of RA symptoms was evaluated according to the ACR 20% response criteria. Allele and genotype frequencies were compared by the two-sided Fisher exact test. The frequency of remission was 47.2% and 44.6% in carriers of 677T and 1298C alleles, compared to 40.7% and 42.0% in carriers of 677C and 1298A alleles, respectively. These differences were statistically non-significant. When the multivariate analysis was additionally adjusted for patients’ age, gender and RA duration, the association of the MTHFR 677T allele with increased frequency of remission was statistically significant. Although RA remission rate in carriers of the MTHFR 677T and 1298C alleles was more frequently observed, it does not seem that 677C&gt;T and 1298A&gt;C MTHFR polymorphisms have a major influence on treatment outcome in RA patients treated with sulfasalazine.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000700011	
Editor: 	Associação Brasileira de Divulgação Científica	
Relação: 	10.1590/S0100-879X2009000700011	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Medical and Biological Research  v.42 n.7 2009	
Fonte: 	info:eu-repo/semantics/openAccess