期刊
ANNALS OF CLINICAL BIOCHEMISTRY
卷 46, 期 -, 页码 420-422出版社
SAGE PUBLICATIONS INC
DOI: 10.1258/acb.2009.009004
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Familial hypercholesterolaemia (FH) is a common genetic disorder characterized by high plasma low-density lipoprotein (LDL)-cholesterol and premature coronary artery disease. Many factors, such as illness, high-dose statin therapy or a strict vegan diet can cause hypobetalipoproteinaemia (HBL). The more common secondary causes of HBL in the hospital setting include cachexia, intestinal malabsorption, malnutrition, severe liver disease and hyperthyroidism. We report a case of HBL in a 43-year-old man with previously demonstrated marked hypercholesterolaemia who attended a lipid disorders clinic for FH cascade screening. Surprisingly, a lipid profile taken at that time showed low plasma LDL-cholesterol and apolipoprotein B concentrations of 1.6 mmol/L and 0.61 g/L, respectively. He was not on lipid-lowering therapy. DNA sequencing showed that he was heterozygous for the LDLR gene mutation (C677R) present in other affected family members. Of interest, his serum transaminases were increased by similar to 3-fold and hepatitis serology and genotyping confirmed a diagnosis of hepatitis C virus (HCV) infection. In summary, we describe a case of HBL secondary to chronic HCV infection in a patient with FH, confirmed by mutational analysis.
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