title: Polymorphisms of the apolipoprotein B and E genes and their relationship to plasma lipid variables in healthy Chinese men.
abstract: In this study we have analysed the apolipoprotein (Apo) E polymorphism and polymorphisms of the ApoB gene, including the ApoB/XbaI and ApoB/4311 diallelic polymorphisms and a hypervariable region (HVR) situated in the 3' region of the gene (ApoB/3'HVR), in a sample of healthy male subjects from Taiyuan (northern People's Republic of China). In comparison to Caucasian populations, in the Chinese sample, the XbaI2 allele (presence of cutting site; frequency 6.1%; and 95% confidence interval, 3.3-8.9) and the long HVR alleles (9.4%; 6.0-12.8) were rare, whereas the ApoB/4311 (Ser) allele (70.8%; 65.4-76.2) and the 34-repeat allele of the HVR (HVR34; 62.4%; 56.8-68.0) were frequent. In subjects having none, one, or two HVR34 alleles, the mean levels of plasma triglycerides were 2.32 +/- 1.44 (SD), 1.45 +/- 0.74, and 1.75 +/- 1.07 g/l, respectively (P < 0.007). Similar trends were observed for very low density lipoprotein (VLDL) cholesterol, LpE:B, and LpCIII:B. The frequencies of the ApoE alleles were similar to those reported in other populations of Asian origin; E2 (7.4%; 4.2-10.6), E3 (84.4%; 80.2-88.6), and E4 (8.2%; 5.0-11.4). Individuals carrying the E2 allele had a lower mean level of ApoB than E33 individuals: 0.87 +/- 0.16 and 1.00 +/- 0.22 g/l, respectively (P < 0.007). Individuals carrying the E4 allele had higher levels of ApoE than E33 individuals: 0.140 +/- 0.084 and 0.094 +/- 0.052 g/l, respectively (P < 0.004); similar trends were observed for VLDL cholesterol, triglycerides, LpE:B, and LpCIII:B. The ApoB/HVR34 and ApoE/E4 polymorphisms accounted for 10% to 15% of the variability of the plasma levels of VLDL cholesterol, ApoE, triglycerides, LpE:B, and LpCIII:B. Several lipid variables appeared to be favourably affected by specific forms of ApoB and ApoE that are particularly frequent in this Chinese population.
authors.affiliation: MONICA Project, Belfast, UK.
authors.forename: A E
authors.initials: AE
authors.lastname: Evans
authors.forename: W
authors.initials: W
authors.lastname: Zhang
authors.forename: J F
authors.initials: JF
authors.lastname: Moreel
authors.forename: J M
authors.initials: JM
authors.lastname: Bard
authors.forename: S
authors.initials: S
authors.lastname: Ricard
authors.forename: O
authors.initials: O
authors.lastname: Poirier
authors.forename: L
authors.initials: L
authors.lastname: Tiret
authors.forename: J C
authors.initials: JC
authors.lastname: Fruchart
authors.forename: F
authors.initials: F
authors.lastname: Cambien
mesh_terms: D000328:Adult; D000368:Aged; D000483:Alleles; D000704:Analysis of Variance; D001055:Apolipoproteins B / Q000235:genetics*; D001057:Apolipoproteins E / Q000235:genetics*; D044466:Asian People / Q000235:genetics*; D001483:Base Sequence; D016009:Chi-Square Distribution; D002681:China; D002784:Cholesterol / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D015243:Cholesterol, VLDL / Q000097:blood; D005787:Gene Frequency; D014644:Genetic Variation; D006801:Humans; D008055:Lipids / Q000097:blood*; D008074:Lipoproteins / Q000097:blood; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D011110:Polymorphism, Genetic; D012091:Repetitive Sequences, Nucleic Acid; D014280:Triglycerides / Q000097:blood
chemical_list: D001055:Apolipoproteins B; D001057:Apolipoproteins E; D008078:Cholesterol, LDL; D015243:Cholesterol, VLDL; D008055:Lipids; D008074:Lipoproteins; D014280:Triglycerides; D002784:Cholesterol