Search results for " familial combined hypolipidemia"

showing 4 items of 4 documents

Threshold Effects of Circulating Angiopoietin-Like 3 Levels on Plasma Lipoproteins.

2017

Abstract Context Angiopoietin-like 3 (ANGPTL3) deficiency in plasma due to loss-of-function gene mutations results in familial combined hypobetalipoproteinemia type 2 (FHBL2) in homozygotes. However, the lipid phenotype in heterozygotes is much milder and does not appear to relate directly to ANGPTL3 levels. Furthermore, the low-density lipoprotein (LDL) phenotype in carriers of ANGPTL3 mutations is unexplained. Objective To determine whether reduction below a critical threshold in plasma ANGPTL3 levels is a determinant of lipoprotein metabolism in FHBL2, and to determine whether proprotein convertase subtilisin kexin type 9 (PCSK9) is involved in determining low LDL levels in this conditio…

0301 basic medicineMaleApolipoprotein BEndocrinology Diabetes and MetabolismClinical BiochemistryBiochemistryLipoprotein particlePCSK9Cohort StudiesHypobetalipoproteinemiaschemistry.chemical_compoundEndocrinologyANGPTL3biologyChemistryMiddle AgedPedigreeLipoproteins LDLPhenotypeKexinlipids (amino acids peptides and proteins)FemaleANGPTL3; familial combined hypolipidemia; PCSK9Lipoproteins HDLAdultmedicine.medical_specialtyHeterozygoteBlotting Western03 medical and health sciencesInternal medicinemedicineHumansGenetic Predisposition to DiseaseClinical Research ArticlesAgedAngiopoietin-Like Protein 3Apolipoproteins BCholesterolPCSK9Biochemistry (medical)medicine.disease030104 developmental biologyEndocrinologyAngiopoietin-like ProteinsLDL receptorMultivariate AnalysisMutationbiology.proteinLinear Modelsfamilial combined hypobetalipoproteinemiaHypobetalipoproteinemiaAngiopoietinsLipoprotein
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Clinical and biochemical characteristics of individuals with low cholesterol syndromes: A comparison between familial hypobetalipoproteinemia and fam…

2017

Background The most frequent monogenic causes of low plasma cholesterol are familial hypobetalipoproteinemia (FHBL1) because of truncating mutations in apolipoprotein B coding gene (APOB) and familial combined hypolipidemia (FHBL2) due to loss-of-function mutations in ANGPTL3 gene. Objective A direct comparison of lipid phenotypes of these 2 conditions has never been carried out. In addition, although an increased prevalence of liver steatosis in FHBL1 has been consistently reported, the hepatic consequences of FHBL2 are not well established. Methods We investigated 350 subjects, 67 heterozygous carriers of APOB mutations, 63 carriers of the p.S17* mutation in ANGPTL3 (57 heterozygotes and …

0301 basic medicineMaleHepatic steatosisSettore MED/09 - Medicina InternaApolipoprotein BEndocrinology Diabetes and Metabolism030204 cardiovascular system & hematologymedicine.disease_causeANGPTL3 gene; APOB gene; Familial combined hypolipidemia; Familial hypobetalipoproteinemia; HDL cholesterol; Hepatic steatosis; Low cholesterol syndromesHypobetalipoproteinemiasExon0302 clinical medicineHDL cholesterolANGPTL3Nutrition and DieteticFamilial hypobetalipoproteinemiaGeneticsMutationNutrition and Dieteticsbiologyhepatic steatosisHomozygoteANGPTL3 geneMiddle AgedLow cholesterol syndromesPhenotypePhenotypelipids (amino acids peptides and proteins)FemaleCardiology and Cardiovascular MedicineANGPTL3 gene; APOB gene; familial combined hypolipidemia; familial hypobetalipoproteinemia; HDL cholesterol; hepatic steatosis; low cholesterol syndromesmedicine.medical_specialtyHeterozygoteLow cholesterol syndromeHepatic steatosi03 medical and health sciencesInternal medicineInternal MedicinemedicineHumansAPOB geneFamilial combined hypolipidemiaGeneAgedAngiopoietin-Like Protein 3Apolipoproteins Bbusiness.industryHeterozygote advantagemedicine.disease030104 developmental biologyEndocrinologyAngiopoietin-like ProteinsMutationbiology.proteinlow cholesterol syndromesSteatosisbusiness
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CLINICAL CHARACTERISTICS AND PLASMA LIPIDS IN SUBJECTS WITH FAMILIAL COMBINED HYPOLIPIDEMIA: A POOLED ANALYSIS

2013

Background. Angiopoietin-like 3 (ANGPTL3) regulates lipoprotein metabolism by modulating extracellular lipases. Loss-of function mutations in ANGPTL3 gene cause familial combined hypolipidemia (FHBL2). The mode of inheritance and hepatic and vascular consequences of FHBL2 have not been fully elucidated. To get further insights on these aspects, we re-evaluated the clinical and the biochemical characteristics of all reported cases of FHBL2. Methods and Results. One hundred fteen FHBL2 individuals carrying 13 different mutations in the ANGPTL3 gene (14 homozygotes, 8 compound heterozygotes and 93 heterozygotes) and 402 controls were considered. Carriers of 2 mutant alleles had undetectable pl…

ANGPTL3 mutations; angiopoietin-like 3; cardiovascular disease; diabetes mellitus; fatty liverSettore MED/09 - Medicina InternaCompound heterozygosityBiochemistryCohort StudiesHypobetalipoproteinemiasEndocrinologyANGPTL3cardiovascular diseaseGenotypeChildLipoproteinclinical characteristicsAged 80 and overbiologydiabetes mellituFatty liverHomozygoteLipoprotein(a)Middle AgedANGPTL3 mutationLipidsCardiovascular Diseasesdiabetes mellitusANGPTL3 Familial combined hypolipidemia LipoproteinAdultmedicine.medical_specialtyHeterozygoteANGPTL3; Familial combined hypolipidemia; clinical characteristicsAdolescentEvinacumabQD415-436Young AdultDiabetes mellitusInternal medicinemedicineHumansANGPTL3 mutationsAlleleFamilial combined hypolipidemiaAgedAngiopoietin-Like Protein 3fatty liverangiopoietin-like 3Cell Biologymedicine.diseaseEndocrinologyAngiopoietin-like ProteinsGene Expression RegulationMutationbiology.proteinPatient-Oriented and Epidemiological ResearchAngiopoietinsLipoproteinLipoprotein(a)
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Familial combined hypolipidemia due to mutations in the ANGPTL3 gene

2013

The role of ANGPTL3 in lipoprotein metabolism emerged from studies in a mutant mouse strain characterized by severe hypotriglyceridemia and carrying a loss-of-function (LOF) mutation of the ANGPTL3 gene. ANGPTL3 was found to inhibit lipoprotein lipase and endothelial lipase. Genome-wide association studies in humans demonstrated the association of ANGPTL3 variants with plasma triglyceride levels and LOF mutations of ANGPTL3 were found in hypotriglyceridemic subjects in population studies. Recently, individuals originally classified as affected by familial hypobetalipoproteinemia were found to be homozygotes/compound heterozygotes for rare LOF mutations of ANGPTL3. They show a striking reduc…

GeneticsEndothelial lipaseMutationLipoprotein lipaseVery low-density lipoproteineducation.field_of_studySettore MED/09 - Medicina InternaEndocrinology Diabetes and MetabolismPopulationANGPTL3; ANGPTL8; endothelial lipase; familial combined hypolipidemia; HDL; LDL; lipoprotein lipaseBiologyCompound heterozygositymedicine.disease_causeANGPTL3medicinelipids (amino acids peptides and proteins)Cardiology and Cardiovascular MedicineeducationANGPTL3 ANGPTL8 endothelial lipase familial combined hypolipidemia HDL LDL lipoprotein lipaseLipoprotein
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