title: [Serum apolipoprotein E-rich HDL-C levels in the subjects with hyperalphalipoproteinemia].
abstract: To clarify an increasing factor of serum apolipoprotein E-rich HDL-C(apo E-rich HDL-C) level in the patients with hyperalphalipoproteinemia(HALP), we characterized the relationships between the serum apo E-rich HDL-C levels and, apolipoprotein E genotypes and cholesteryl ester transfer protein(CETP) gene mutations using healthy(n = 46) and HALP subjects(HDL-C > or = 100 mg/dl, n = 67). Serum apo E-rich HDL-C level of healthy subjects was significantly different from that of HALP subjects. Frequencies of apo E allele of all subjects studied were consistent with previous other reports. It was, however, demonstrated that apo epsilon 4 allele decreases the apo E-rich HDL-C level in all HALP subjects. On the other hand, the G to A mutation in the intron 14 splice donor site(114A) and Asp442 to Gly mutation in the exon 15(D442G), were analysed by polymerase chain reaction-single strand conformation polymorphism(PCR-SSCP) method. Then we compared the apo E-rich HDL-C levels between the HALP subjects in the almost general population of apo E 3/3 with and without CETP gene mutation. There was strong tendency that the existence of CETP mutations increased the serum apo E-rich HDL-C level, comparing with the HALP subjects without these mutations. Therefore, we suggested that the increasing of serum apo E-rich HDL-C level was caused by the CETP deficiency and its level was affected by apo E genotypes.
authors.affiliation: Department of Laboratory Medicine, Niigata University School of Medicine.
authors.forename: K
authors.initials: K
authors.lastname: Inano
authors.forename: T
authors.initials: T
authors.lastname: Miida
authors.forename: M
authors.initials: M
authors.lastname: Okada
mesh_terms: D001057:Apolipoproteins E / Q000097:blood* / Q000235:genetics*; D002352:Carrier Proteins / Q000235:genetics*; D053480:Cholesterol Ester Transfer Proteins; D008076:Cholesterol, HDL / Q000097:blood*; D006023:Glycoproteins; D006801:Humans; D006951:Hyperlipoproteinemias / Q000097:blood*; D008075:Lipoproteins, HDL / Q000097:blood*; D009154:Mutation
chemical_list: D001057:Apolipoproteins E; C506642:CETP protein, human; D002352:Carrier Proteins; D053480:Cholesterol Ester Transfer Proteins; D008076:Cholesterol, HDL; D006023:Glycoproteins; D008075:Lipoproteins, HDL; C025121:apolipoprotein E-rich HDL