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Associação entre o polimorfismo rs7700944 no gene TIM-4 e artrite reumatoide em Zahedan, sudeste do Irã / Association between the rs7700944 polymorphism in the TIM-4 gene and rheumatoid arthritis in Zahedan, southeast Iran
Zakeri, Zahra; Hashemi, Mohammad; Pourhosseini, Seyed Mohammad Ebrahim; Eskandari-Nasab, Ebrahim; Bahari, Gholamreza; Taheri, Mohsen.
  • Zakeri, Zahra; Zahedan University of Medical Sciences. Faculdade de Medicina. Departamento de Medicina Interna. Zahedan. IR
  • Hashemi, Mohammad; Zahedan University of Medical Sciences. Faculdade de Medicina. Departamento de Medicina Interna. Zahedan. IR
  • Pourhosseini, Seyed Mohammad Ebrahim; Zahedan University of Medical Sciences. Faculdade de Medicina. Departamento de Medicina Interna. Zahedan. IR
  • Eskandari-Nasab, Ebrahim; Zahedan University of Medical Sciences. Faculdade de Medicina. Departamento de Medicina Interna. Zahedan. IR
  • Bahari, Gholamreza; Zahedan University of Medical Sciences. Faculdade de Medicina. Departamento de Medicina Interna. Zahedan. IR
  • Taheri, Mohsen; Zahedan University of Medical Sciences. Faculdade de Medicina. Departamento de Medicina Interna. Zahedan. IR
Rev. bras. reumatol ; 53(4): 341-345, ago. 2013. ilus, tab
Article in Portuguese | LILACS | ID: lil-690715
RESUMO

INTRODUÇÃO:

Recentemente, relatou-se uma associação entre artrite reumatoide (AR) e a variante rs7700944 G>A nos domínios imunoglobulina e mucina de células T (TIM-4).

OBJETIVO:

Investigar o impacto desse polimorfismo na suscetibilidade a AR em uma amostra da população iraniana. PACIENTES E

MÉTODOS:

Este estudo caso-controle foi conduzido em 120 pacientes com AR e 120 indivíduos saudáveis. O polimorfismo rs7700944 do gene TIM-4 foi determinado usando-se o ensaio tetra amplification refractory mutation system-polymerase chain reaction (T-ARMS-PCR).

RESULTADOS:

Não se observou diferença significativa quanto ao polimorfismo rs7700944 do gene TIM-4 entre os pacientes com AR e os indivíduos saudáveis. Nas mulheres, não houve associação significativa quanto ao polimorfismo rs7700944 do gene TIM-4 nos dois grupos. Nos homens, o genótipo GA+AA, em comparação ao GG, aumentou o risco para AR (OR = 5,15; IC 95% = 1,30-20,48; P = 0,020). Além disso, os resultados mostraram que o alelo rs7700944 A aumentou o risco para AR (OR = 4,39; IC 95% = 1,43-13,54; P = 0,009).

CONCLUSÃO:

Nossos resultados não confirmam a existência de associação entre AR e o polimorfismo rs7700944 do gene TIM-4. Uma interação entre esse polimorfismo e sexo sugere uma associação sexo-específica entre AR e esse polimorfismo de nucleotídeo único, que ainda requer elucidação.
ABSTRACT

INTRODUCTION:

Recently, an association between rheumatoid arthritis (RA) and the rs7700944 G>A variant in the T-cell immunoglobulin and mucin domains 4 (TIM-4) has been reported.

OBJECTIVE:

The present study aimed at investigating the impact of that polymorphism on susceptibility to RA in a sample of the Iranian population. Patients and

methods:

This case-control study was conducted on 120 patients with RA and 120 healthy subjects. The rs7700944 polymorphism in the TIM-4 gene was determined using tetra amplification refractory mutation system-polymerase chain reaction (T-ARMS-PCR) assay.

RESULTS:

No significant difference was observed regarding the rs7700944 polymorphism of the TIM-4 gene between patients with RA and normal individuals. In females, no significant association was found between the groups concerning the rs7700944 polymorphism of the TIM-4 gene. In males, the GA+AA genotype increased the risk of RA in comparison with the GG genotype (OR = 5.15, 95% CI = 1.30-20.48, P = 0.020). Furthermore the results showed that the rs7700944 A allele increased the risk of RA (OR = 4.39, 95% CI = 1.43-13.54, P = 0.009).

CONCLUSION:

Our results do not support an association between the rs7700944 polymorphism of the TIM-4 gene and RA. An interaction between this polymorphism and sex suggests a sex-specific association between this single nucleotide polymorphism and RA, which remains to be fully elucidated.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Polymorphism, Genetic / Genetic Predisposition to Disease / Membrane Proteins Type of study: Observational study / Risk factors Limits: Adult / Female / Humans / Male Country/Region as subject: Asia Language: Portuguese Journal: Rev. bras. reumatol Journal subject: Rheumatology Year: 2013 Type: Article Affiliation country: Iran Institution/Affiliation country: Zahedan University of Medical Sciences/IR

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Full text: Available Index: LILACS (Americas) Main subject: Polymorphism, Genetic / Genetic Predisposition to Disease / Membrane Proteins Type of study: Observational study / Risk factors Limits: Adult / Female / Humans / Male Country/Region as subject: Asia Language: Portuguese Journal: Rev. bras. reumatol Journal subject: Rheumatology Year: 2013 Type: Article Affiliation country: Iran Institution/Affiliation country: Zahedan University of Medical Sciences/IR