title: Stepwise positive association between APOA5 minor allele frequencies and increasing plasma triglyceride quartiles in random patients with hypertriglyceridemia of unclarified origin.
abstract: Apolipoprotein A5 (ApoA5) gene and its protein product play a central role in the complex regulation of circulating triglyceride levels in humans. Naturally occurring variants of the apolipoprotein A5 gene have been associated with increased triglyceride levels and have been found to confer risk for cardiovascular diseases. In our study, four polymorphisms, the T-1131C, IVS3+G476A, T1259C, and C56G alleles of APOA5 were analyzed in a total of 436 patients by polymerase chain reaction-restriction fragment length polymorphism methods. The randomly selected patients were classified into four quartile (q) groups based on triglyceride levels (q1: TG<1.31 mmol/l; q2: 1.31-2.90 mmol/l; q3: 2.91-4.85 mmol/l; q4: TG>4.85 mmol/l). We observed significant stepwise increasing association between the four APOA5 minor allele carrier frequencies and plasma triglyceride quartiles: -1131C (q1: 4.44%; q2: 8.95%; q3: 12.9%; q4: 20.6%), IVS3 + 476A (q1: 4.44%; q2: 5.79%; q3: 11.1%; q4: 19.7%), 1259C (q1: 4.44%; q2: 6.84%; q3: 11.1%; q4: 20.6%) and 56G (q1: 5.64%; q2: 6.31%; q3: 11.16%; q4: 11.9%). The serum total cholesterol and high density lipoprotein-cholesterol levels also showed allele-dependent differences in the quartiles. The findings presented here revealed a special arrangement of APOA5 minor alleles in patients with different serum triglyceride ranges in Hungarians.
authors.affiliation: Central Laboratory, Markusovszky County Hospital, Szombathely, Hungary.
authors.forename: Ferenc
authors.initials: F
authors.lastname: Hadarits
authors.forename: Péter
authors.initials: P
authors.lastname: Kisfali
authors.forename: Márton
authors.initials: M
authors.lastname: Mohás
authors.forename: Anita
authors.initials: A
authors.lastname: Maász
authors.forename: Katalin
authors.initials: K
authors.lastname: Sümegi
authors.forename: Melinda
authors.initials: M
authors.lastname: Szabó
authors.forename: Katalin
authors.initials: K
authors.lastname: Hetyésy
authors.forename: Andrea
authors.initials: A
authors.lastname: Valasek
authors.forename: Ingrid
authors.initials: I
authors.lastname: Janicsek
authors.forename: István
authors.initials: I
authors.lastname: Wittmann
authors.forename: Béla
authors.initials: B
authors.lastname: Melegh
mesh_terms: D000328:Adult; D000368:Aged; D000072040:Apolipoprotein A-V; D001054:Apolipoproteins A / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D006801:Humans; D006814:Hungary; D015228:Hypertriglyceridemia / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D011897:Random Allocation; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014280:Triglycerides / Q000097:blood* / Q000235:genetics; D055815:Young Adult
chemical_list: C437704:APOA5 protein, human; D000072040:Apolipoprotein A-V; D001054:Apolipoproteins A; D014280:Triglycerides