Open AccessFive polymorphisms in gene candidates for cardiovascular disease in Afro‐Brazilian individuals
Author(s) -
Sakuma Tatsuya,
Hirata Rosario D.C.,
Hirata Mario H.
Publication year - 2004
Publication title -
journal of clinical laboratory analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 50
eISSN - 1098-2825
pISSN - 0887-8013
DOI - 10.1002/jcla.20044
Subject(s) - apolipoprotein b , medicine , apolipoprotein e , ecori , restriction fragment length polymorphism , agarose gel electrophoresis , endocrinology , allele , restriction enzyme , genotype , cholesterol , biology , genetics , gene , disease
Associations of polymorphisms in the angiotensin I‐converting enzyme ( ACE ), apolipoprotein B ( APOB ) and apolipoprotein E ( APOE ) genes with hypertension and variations in lipid serum levels were evaluated in 184 Afro‐Brazilians with a familial history of coronary artery disease (CAD). ACE ( Ins/Del ) and APOB ( Ins/Del , XbaI , and EcoRI ) and APOE ( HhaI ) polymorphisms were determined by polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) analyses on agarose, and polyacrylamide gel electrophoresis. Serum lipids were measured by means of routine enzymatic assays. The results showed a high frequency of hypertension (44%) in Afro‐Brazilians that was increased in subjects >40 years old and those with a blood mass index (BMI) higher than 25 kg/m 2 ( P <0.001). The ACE Del allele was associated with hypertension in men >40 years old ( P <0.05). APOE ( HhaI ) and APOB ( XbaI and Ins/Del ) polymorphisms were not associated with hypertension or variations in serum concentrations of lipids, while subjects with the APOB E− allele had higher low‐density lipoprotein cholesterol (LDL‐C) levels than E+ carriers ( P <0.05). These results suggest that ACE Ins/Del polymorphism is associated with hypertension, and APOB EcoRI polymorphism is associated with LDL‐C variation in Afro‐Brazilians. J. Clin. Lab. Anal. 18:309–316, 2004. © 2004 Wiley‐Liss, Inc.