Q192R polymorphism in the PON1 gene and familial hypercholesterolemia in a Saudi population.

Abstract:

BACKGROUND:Familial hypercholesterolemia (FH) is an autosomal dominant condition characterized by abnormal levels of low-density lipoprotein (LDL) in the blood. FH is a risk factor for atherosclerosis and cardiovascular disease. The relationship between the paraoxonase 1 (PON1) gene, atherosclerosis and coronary artery disease has not been studied in Saudi patients. OBJECTIVE:To investigate the genetic associations of the Q192R polymorphism in the PON1 gene with FH in Saudi patients. DESIGN:Case-control study. SETTING:Tertiary care center, Riyadh. METHODS:Two hundred Saudi patients were enrolled in this study, including 100 patients with FH and 100 healthy controls, during the period from January 2012 to March 2013. Serum was separated from coagulated blood (3 mL) and used for analysis of lipid profiles. Genomic DNA was isolated from anticoagulant-treated blood (2 mL). Genotyping for the Q192R polymorphism was performed by polymerase chain reaction-restriction fragment length polymorphism analysis, followed by 3% agarose gel electrophoresis. MAIN OUTCOME MEASURE:The strength of association between the Q192R polymorphism and FH in the Saudi population. RESULTS:We confirmed that QR versus QQ (odds ratio [OR]: 1.55; 95% confidence interval [CI]: 1.05-3.43; P=.03), QR+RR versus QQ (OR: 1.98; 95% CI: 1.13-3.49; P=.01), and R versus Q (OR: 1.68; 95% CI: 1.09- 2.59; P=.01) in the Q192R polymorphism were associated with FH in the Saudi population. CONCLUSION:In conclusion, the Q192R polymorphism in the PON1 gene is associated with FH in the Saudi population. Our results confirmed that the R allele, QR, and dominant model genotypes were associated with FH. LIMITATION:Only a single variant (Q192R) was analyzed, and the medical and family histories of the patients were not known.

journal_name

Ann Saudi Med

journal_title

Annals of Saudi medicine

authors

Alharbi KK,Alnbaheen MS,Alharbi FK,Hasanato RM,Khan IA

doi

10.5144/0256-4947.2017.425

subject

Has Abstract

pub_date

2017-11-01 00:00:00

pages

425-432

issue

6

eissn

0256-4947

issn

0975-4466

journal_volume

37

pub_type

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