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소아 IgA 신병증 환자에서 임상병리 양상과 CCL-2 및 CCL-5 유전자 다형성의 연관성 연구

Association Study between CCL-2 and CCL-5 Polymorphisms and Clinicopathological Characteristics of Childhood IgA Nephropathy

서진순|조병수|한원호
대한소아신장학회 (The Korean Society Of Pediatric Nephrology)|2010.04|Childhood Kidney Diseases (Childhood Kidney diseases)|제14권 제1호|pp. 51-61

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참고문헌

키워드

ChildhoodMCP-1PolymorphismCCL-2CCL-5RANTESChemokineIgA ephropathy
주제분류소아과학

초록

목적:최근 Chemokine (C-C motif) ligand-2 (CCL-2; also known as MCP-1)와 CCL-5 (also known as RANTES)가 다양한 염증성 및 비염증성 신질환과 연관성을 보인다는 연구결과들이 보고되고 있다. 이에 본 저자들은 CCL-2 및 CCL-5 유전자의 단일염기다형성(single nucleotide polymorphism; SNP)가 소아 IgA 신병증의 발생 및 임상양상과 어떠한 연관성을 보이는지 알아보기 위하여 본 연구를 시행하였다. 방법:경희의료원 소아청소년과에서 학교 검뇨상 이상소견을 보여 전원된 환아 중 신생검을 통해 IgA 신병증으로 확진된 196명의 소아환아와 285명의 건강한 대조군을 대상으로 geneotyping을 통해 6 개의 SNP 대립 유전자 빈도를 조사하여 분석하였다. 또한, 단백뇨(>4 mg/m2/hour), 병리 소견 상 족세포의 족돌기 융합과 병리학적 진행성 병변의 유무에 따라 환자군을 다시 세 개의 하위그룹으로 세분화하여 비교하였다. 결과:IgA 신병증 환아 및 대조군의 SNP 대립 유전자 빈도를 분석하였을 때, CCL-2 및 CCL-5 유전자 모두에서 질환의 발생과 연관성을 보이는 SNP는 발견되지 않았다. 두 개의 linkage disequilibrium block이 형성되었으나 하플로타입 분석에서는 유의한 하플로타입을 찾을 수 없었다. 또한, 환자의 하위그룹을 비교하였을 때에도 단백뇨, 병리 소견 상 족세포의 족돌기 융합과 병리학적 진행성 병변과 연관성을 보이는 SNP는 발견되지 않았다. 결론:한국 소아 환자를 대상으로 시행한 본 연구에서 CCL-2 및 CCL-5유전자 다형성과 IgA 신병증의 임상병리 양상 간에 유의한 연관성은 없었다.

Abstract

Purpose:Previous studies have suggested that Chemokine (C-C motif) ligand-2 (CCL- 2; also known as MCP-1) and CCL-5 (also known as RANTES) are possibly associated with the pathogenesis of various inflammatory and non-inflammatory renal diseases. The present study was conducted to investigate association of polymorphisms of CCL-2 and CCL-5 genes with childhood IgA nephropathy (IgAN). Methods:The authors analyzed six single nucleotide polymorphisms (SNPs) of CCL-2 and CCL-5 in 196 pediatric IgAN patients and in 285 healthy controls. We compared variations in SNPs between two several sets of IgAN subgroups, allocated by presence of proteinuria (>4 mg/m2/hour), podocyte foot process effacement, and pathologically advanced disease markers, such as interstitial fibrosis, tubular atrophy, or global sclerosis. Results:Genotypic data of IgAN patients and controls showed no significant SNP frequency difference in both of of CCL-2 and CCL-5. Even though two linkage disequilibrium blocks were formed, there was no significance in the haplotype analysis. In the patient subgroup analysis, no SNP of CCL-2 and CCL-5 was found to be associated with the presence of proteinuria, podocyte foot process effacement, and pathologically advanced disease markers. Conclusion:Our data indicate that no association exists between CCL-2 and CCL-5 SNPs and childhood IgAN susceptibility, and presence of proteinuria, podocyte foot process effacement, and pathologic progression of IgAN.

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