Search results for "chylomicron retention disease"

showing 4 items of 4 documents

Molecular diagnosis of hypobetalipoproteinemia: an ENID review.

2007

Abstract Primary hypobetalipoproteinemia (HBL) includes a group of genetic disorders: abetalipoproteinemia (ABL) and chylomicron retention disease (CRD), with a recessive transmission, and familial hypobetalipoproteinemia (FHBL) with a co-dominant transmission. ABL and CRD are rare disorders due to mutations in the MTP and SARA2 genes, respectively. Heterozygous FHBL is much more frequent. FHBL subjects often have fatty liver and, less frequently, intestinal fat malabsorption. FHBL may be linked or not to the APOB gene. Most mutations in APOB gene cause the formation of truncated forms of apoB which may or may be not secreted into the plasma. Truncated apoBs with a size below that of apoB-3…

MaleCandidate geneSettore MED/09 - Medicina InternaApolipoprotein BGenotypeLocus (genetics)BiologyPolymorphism Single NucleotidePCSK9 GenemedicineHumansFamilial hypobetalipoproteinemiaGenetic TestingAPOB geneApolipoproteins BGeneticsPCSK9AbetalipoproteinemiaChylomicron retention diseasemedicine.diseaseEuropean Network for Inherited Dyslipidemia (ENID)AbetalipoproteinemiaPhenotypePCSK9 geneHypobetalipoproteinemia Familial Apolipoprotein BMutationbiology.proteinlipids (amino acids peptides and proteins)FemaleHypobetalipoproteinemiaMTP geneCardiology and Cardiovascular MedicineCarrier Proteinsuropean Network for Inherited Dyslipidemia (ENID)European Network for Inherited Dyslipidemia (ENID) Familial hypobetalipoproteinemia Abetalipoproteinemia Chylomicron retention disease.Chylomicron retention diseaseAtherosclerosis
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Genetics of familial hypobetalipoproteinemia

2007

Primary hypobetalipoproteinemias include three monogenic disorders: the relatively frequent codominant familial hypobetalipoproteinemia (FHBL), the rare recessive conditions abetalipoproteinemia (ABL) and chylomicron retention disease (CMRD). Approximately 50% of FHBL patients are carriers of mutations in the APOB gene, mostly causing the formation of truncated forms of ApoB. In some kindred, FHBL is linked to a locus on chromosome 3 (3p21), but the candidate gene is still unknown. Recently, a FHBL-like phenotype was observed in carriers of mutations of the proprotein convertase subtilisin/kexin type 9 (PCSK9) gene causing loss-of-function of the encoded protein, a proprotein convertase tha…

hypobetalipoproteinemia; abetalipoproteinemia; Chylomicron retention diaseaseSettore MED/09 - Medicina InternaApolipoprotein BAssembly and secretion of ApoB-containing lipoproteinsApoB-containing lipoproteinsBiochemistryMicrosomal triglyceride transfer proteinabetalipoproteinemiaChylomicron retention diaseasemedicineFamilial hypobetalipoproteinemiaGeneticsbiologyPCSK9AbetalipoproteinemiahypobetalipoproteinemiaChylomicron retention diseasemedicine.diseaseProprotein convertaseAbetalipoproteinemiaLDL receptorbiology.proteinlipids (amino acids peptides and proteins)HypobetalipoproteinemiaAbetalipoproteinemia; ApoB-containing lipoproteins; Assembly and secretion of ApoB-containing lipoproteins; Chylomicron retention disease; Familial hypobetalipoproteinemiaChylomicron retention disease
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Variable phenotypic expression of chylomicron retention disease in a kindred carrying a mutation of the Sara2 gene

2010

Chylomicron retention disease is a recessive inherited disorder characterized by fat malabsorption and steatorrhea and is associated with failure to thrive in infancy. We describe a kindred carrying a mutation of Sara2 gene causing a chylomicron retention phenotype. The proband was a 5-month-old baby, born of consanguineous, apparently healthy parents from Morocco, with failure to thrive. There was a large quantity of fats in feces and malabsorption of fat-soluble vitamins. Intestinal biopsies showed a diffused enterocyte vacuolization with large cytosolic lipid droplets. Chylomicron retention disease or Anderson disease was hypothesized, and the Sara2 gene was analyzed by direct sequencing…

AdultMaleProbandmedicine.medical_specialtychylomicron retention disease phenotypic expression Sara2Settore MED/09 - Medicina InternaMalabsorptionEndocrinology Diabetes and MetabolismBiologySettore MED/42 - Igiene Generale E ApplicataExonEndocrinologyMalabsorption SyndromesInternal medicineChylomicronsmedicineHumansAlleleMonomeric GTP-Binding ProteinsGeneticsHaplotypeInfantmedicine.diseaseSteatorrheaPedigreeFat malabsorptionPhenotypeEndocrinologyChild PreschoolMutationFailure to thriveFabry DiseaseFemalemedicine.symptomChylomicron retention diseaseMetabolism
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Hypobetalipoproteinemia

2011

Hypobetalipoproteinemias (HBL) represent a heterogeneous group of disorders characterized by reduced plasma levels of total cholesterol (TC), low density lipoprotein-cholesterol (LDL-C) and apolipoprotein B (apoB) below the 5th percentile of the distribution in the population. HBL are defined as primary or secondary according to the underlying causes. Primary monogenic HBL are caused by mutations in several known genes (APOB, PCSK9, MTP, SARA2) or mutations in genes not yet identified. Familial hypobetalipoproteinemia (FHBL) is the most frequent monogenic form of HBL with a dominant mode of inheritance. It may be due to loss-of-function mutations in APOB or, less frequently, in PCSK9 genes.…

Geneticseducation.field_of_studyApolipoprotein BPCSK9PopulationFatty liverAbetalipoproteinemiaBiologymedicine.diseaseBiochemistrymedicinebiology.proteinlipids (amino acids peptides and proteins)HypobetalipoproteinemiaeducationGeneChylomicron retention disease
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