Clinical journal of the American Society of Nephrology : CJASN · 2010
Examination of association with candidate genes for diabetic nephropathy in a Mexican American population.
СтатьяМногоцентровое исследованиеПоддержка NIH: внешняя программаНазвание и аннотация: Перевод в очереди
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Kim Sulgi, Abboud Hanna E, Pahl Madeleine V, Tayek John, Snyder Susan, Tamkin James, Alcorn Harry, Ipp Eli, Nast Cynthia C, Elston Robert C, Iyengar Sudha K, Adler Sharon G
Аннотация
BACKGROUND AND OBJECTIVES: Diabetic nephropathy (DN) is a multifactorial complication characterized by persistent proteinuria in susceptible individuals with type 1 and type 2 diabetes. Disease burden in people of Mexican-American descent is particularly high, but there are only a few studies that characterize genes for DN in this ethnic group. Two genes, carnosine dipeptidase 1 (CNDP1) and engulfment and cell motility 1 (ELMO1) previously showed association with DN in other ethnic groups. CNDP1 and ELMO1 were examined along with eight other genes that are less well characterized for DN in a new study of Mexican-Americans.
DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: The target sample was patients of Mexican-American ancestry collected from three centers: 455 patients with DN and 437 controls with long-term diabetes but no incident nephropathy. Forty-two, 227, and 401 single nucleotide polymorphisms (SNPs) in CNDP1, ELMO1, and the other eight genes, respectively, were examined.
RESULTS: No region in CNDP1 or ELMO1 showed significant P values. Of the other eight candidate genes, an association of DN with a SNP pair, rs2146098 and rs6659783, was found in hemicentin 1 (HMCN1) (unadjusted P = 6.1 x 10(-5)). Association with a rare haplotype in this region was subsequently identified.
CONCLUSIONS: The associations in CNDP1 or ELMO1 were not replicable; however, an association of DN with HMCN1 was found. Additional work at this and other loci will enable refinement of the genetic hypotheses regarding DN in the Mexican-American population to find therapies for this debilitating disease.
DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: The target sample was patients of Mexican-American ancestry collected from three centers: 455 patients with DN and 437 controls with long-term diabetes but no incident nephropathy. Forty-two, 227, and 401 single nucleotide polymorphisms (SNPs) in CNDP1, ELMO1, and the other eight genes, respectively, were examined.
RESULTS: No region in CNDP1 or ELMO1 showed significant P values. Of the other eight candidate genes, an association of DN with a SNP pair, rs2146098 and rs6659783, was found in hemicentin 1 (HMCN1) (unadjusted P = 6.1 x 10(-5)). Association with a rare haplotype in this region was subsequently identified.
CONCLUSIONS: The associations in CNDP1 or ELMO1 were not replicable; however, an association of DN with HMCN1 was found. Additional work at this and other loci will enable refinement of the genetic hypotheses regarding DN in the Mexican-American population to find therapies for this debilitating disease.
Предметные рубрики MeSH
Adaptor Proteins, Signal TransducingCase-Control StudiesChi-Square DistributionDiabetic NephropathiesDipeptidasesGenetic Association StudiesGenetic Predisposition to DiseaseHaplotypesHumansImmunoglobulinsLogistic ModelsMexican AmericansPedigreePhenotypePolymorphism, Single NucleotidePrincipal Component AnalysisRisk AssessmentRisk FactorsUnited States