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1.
Article Dans Anglais | IMSEAR | ID: sea-135787

Résumé

Background & objectives: Cholesteryl ester transfer protein (CETP) gene polymorphism is known to be associated with changes in lipid profiles. Primary hyperlipidaemia is considered to be a major risk factor for pancreatitis, atherosclerosis and coronary heart disease. We investigated the association of one common polymorphism in the CETP gene (Taq1B) with plasma lipid levels and CETP activity in Iranian subjects with and without primary combined hyperlipidaemia. Methods: The study included 102 patients with primary combined hyperlipidaemia and 214 health individuals. Polymerase chain reaction and restriction fragment length polymorphisms were used for genotype detection. To determine the relationship between Taq1B polymorphism and lipid levels, lipids and CETP activity were measured in primary combined hyperlipidaemic and normolipidaemic subjects, with and without Taq1B polymorphism. Results: Plasma CETP activity was significantly (P<0.001) higher in primary combined hyperlipidaemic individuals than in controls. Plasma HDL-C was higher in both groups, in the B2B2 genotype than in the B1B1 and B1B2 genotypes, whereas the serum TG concentrations and CETP activity were lower in B2B2 genotype compared with other genotypes (B1B1 and B1B2). The genotype and allelic frequencies for this polymorphism differed significantly between hyperlipidaemic and nonmolipidaemic individuals (P<0.05). In both groups, CETP Taq 1B polymorphism (presence of B2 allele) correlated significantly with HDL-cholesterol (HDL-C) (r=0.201 and r=0.452 in control and patient groups respectively) and CETP activity (r= -0.123 for controls and r= -0.192 for patients). Interpretation & conclusions: The results showed that Taq 1B polymorphism of CETP gene was associated with changes in lipids profile and plasma CETP activity in the selected population and might have a role in contributing to genetic risk of developing coronary artery disease.


Sujets)
Adulte , Protéines de transfert des esters de cholestérol/génétique , Maladie des artères coronaires/sang , Maladie des artères coronaires/épidémiologie , Maladie des artères coronaires/génétique , Femelle , Fréquence d'allèle , Prédisposition génétique à une maladie/épidémiologie , Génotype , Humains , Hyperlipidémie familiale mixte/sang , Hyperlipidémie familiale mixte/épidémiologie , Hyperlipidémie familiale mixte/génétique , Iran/épidémiologie , Lipides/sang , Mâle , Adulte d'âge moyen , Polymorphisme génétique , Facteurs de risque
2.
Indian J Pediatr ; 2005 Nov; 72(11): 987-9
Article Dans Anglais | IMSEAR | ID: sea-79634

Résumé

Familial combined hyperlipidemia is the most common genetic hyperlipidemia and is responsible for premature coronary artery disease. It is genetically heterogenous and no single diagnostic marker exists. The authors report an affected North Indian kindred spanning three successive generations with a possible autosomal dominant pattern of inheritance and all of them had combined dyslipidemia [elevated total cholesterol, predominantly the low density lipoprotein (LDL) fraction and elevated triglycerides]. The proband, a 4-month-old male baby, was incidentally discovered to have a lipaemic serum and so further evaluated. Both the index case and his maternal grandmother, a non-obese diabetic (type 2) with hypertension, had an atherogenic lipoprotein phenotype. Lipaemia retinalis was documented in this baby but xanthomas and coronary artery disease were not noted in the kindred. The present case report highlights the failure of dietary therapy in the proband and explores new options.


Sujets)
Cholestérol/sang , Humains , Hyperlipidémie familiale mixte/sang , Inde , Nourrisson , Mâle , Triglycéride
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