Familial defective apolipoprotein B-100. Comparison with familial hypercholesterolemia in 18 cases detected in Munich.
نویسندگان
چکیده
It has recently been suggested that a substitution of glutamine for arginine at residue 3500 of apolipoprotein (apo) B-100 causes familial defective apo B-100 (FDB), an autosomal, dominantly inherited disorder, which leads to increased serum cholesterol levels. From a sample of 243 patients from Munich with type IIa hyperlipoproteinemia (HL), we have identified eight individuals with the apo B-100 arginine(3500)----glutamine mutation. In a group of 57 subjects with defective low density lipoprotein receptor (LDLR), no mutant apo B alleles were detected. The frequency of FDB in patients with type IIa HL was estimated to be 3%. In the kindreds of three of the probands, 10 additional carriers of the apo B mutation were identified. Clinical and biochemical data reveal a striking similarity between patients with FDB and those with a defect in the LDLR gene. Our data support previous findings that FDB is a serious disorder causing premature atherosclerosis.
منابع مشابه
Molecular Diagnosis of Familial Hypercholesterolemia
Abstract Background and objectives: Familial hypercholesterolemia (FH) is an autosomal disorder characterized by increased levels of total cholesterol and low density lipoprotein cholesterol. The FH clinical phenotype has been associated with increased risk of coronary heart disease and premature death. The mutation in LDLR gene in most cases is responsible for FH phenotype. Furthermore, other ...
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apolipoprotein B-100 in 12 subjects and their kindred. Eur J Clin Chem Clin Biochem 1992;30:729–36. 21. Kotze MJ, Peeters AV, Langenhoven E, Wauters JG, Van Gaal LF. Phenotypic expression and frequency of familial defective apolipoprotein B-100 in Belgian hypercholesterolemics. Atherosclerosis 1994;111:217–25. 22. Pimstone SN, Defesche JC, Clee SM, Bakker HD, Hayden MR, Kastelein JJ. Difference...
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INTRODUCTION AND OBJECTIVES Familial hypercholesterolemia and familial defective Apo B-100 are phenotypically indistinguishable. At present they can be distinguished by genetic analysis. PATIENTS AND METHODç We compared the clinical features of 13 subjects with familial defective Apo B-100 and 39 subjects with familial hypercholesterolemia. We used data from first degree relatives to compare mo...
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Familial defective apolipoprotein (apo) B-100 (FDB) is a frequent cause of hypercholesterolemia. Hypercholesterolemia in homozygous FDB is less severe than in homozygotes for familial hypercholesterolemia. Recently, we showed decreased low density lipoprotein (LDL) apoB-100 fractional catabolism and decreased production of LDL due to an enhanced removal of apoE-containing precursors in a patien...
متن کاملGenetic Analysis of Iranian Patients with Familial Hypercholesterolemia
Background: Familial hypercholesterolemia (FH) is a frequent autosomal dominant disorder of lipoprotein metabolism. This disorder is generally caused by mutations in low-density lipoprotein receptor (LDLR), apolipoprotein B 100 (APOB), and proprotein convertase subtilisin/kexin type 9 (PCSK9) genes. In the present study, we aimed at identifying the common LDLR and APOB gene mutations in an Iran...
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ورودعنوان ژورنال:
- Arteriosclerosis
دوره 10 4 شماره
صفحات -
تاریخ انتشار 1990