Search results for " Amyloid beta-Protein"

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Haptoglobin interacts with apolipoprotein E and beta-amyloid and influences their crosstalk.

2014

Beta-amyloid accumulation in brain is a driving force for Alzheimer's disease pathogenesis. Apolipoprotein E (ApoE) represents a critical player in beta-amyloid homeostasis, but its role in disease progression is controversial. We previously reported that the acute-phase protein haptoglobin binds ApoE and impairs its function in cholesterol homeostasis. The major aims of this study were to characterize the binding of haptoglobin to beta-amyloid, and to evaluate whether haptoglobin affects ApoE binding to beta-amyloid. Haptoglobin is here reported to form a complex with beta-amyloid as shown by immunoblotting experiments with purified proteins, or by its immunoprecipitation in brain tissues …

Apolipoprotein EMalePhysiologyDiseaseBeta-amyloidBiochemistryAmyloid beta-Protein PrecursorAlzheimer' diseasepolycyclic compoundsskin and connective tissue diseasesapolipoprotein EbiologyChemistryMedicine (all)Haptoglobinfood and beveragesBrainApoE/A? complexGeneral MedicineMiddle AgedhaptoglobinCrosstalk (biology)ApoE/Aβ complexSettore MED/26 - Neurologialipids (amino acids peptides and proteins)FemaleAlzheimer's diseaseProtein BindingAdultmedicine.medical_specialtyImmunoprecipitationCognitive NeuroscienceEnzyme-Linked Immunosorbent AssayCHO CellsTransfectionAlzheimer' disease; ApoE/Aβ complex; Apolipoprotein E; Beta-amyloid; Haptoglobin; Human brain tissue; Adult; Aged; Alzheimer Disease; Amyloid beta-Peptides; Amyloid beta-Protein Precursor; Analysis of Variance; Animals; Apolipoproteins E; Brain; CHO Cells; Cricetulus; Enzyme-Linked Immunosorbent Assay; Female; Haptoglobins; Humans; Immunoprecipitation; Male; Middle Aged; Mutation; Protein Binding; Transfection; Biochemistry; Cell Biology; Physiology; Cognitive Neuroscience; Medicine (all)NOApolipoproteins ECricetulusAlzheimer DiseaseInternal medicinemental disordersmedicineAnimalsHumansImmunoprecipitationAgedAnalysis of VarianceAmyloid beta-PeptidesHaptoglobinsNeurotoxicityAlzheimer’diseaseCell Biologymedicine.diseasehuman brain tissueEndocrinologyMutationbiology.proteinAlzheimer'diseaseHomeostasisACS chemical neuroscience
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A second family with familial AD and the V717L APP mutation has a later age at onset

2006

Four mutations have been reported at the 717 codon of the amyloid precursor protein (APP), with valine substituted by isoleucine, glycine, phenylalanine, and leucine. While several families with the isoleucine substitution have been described, the other substitutions have been reported in only one family each worldwide. A family with the V717L APP mutation has been previously reported,1 with a mean age at onset of 38 years (range 35 to 39), based on four affected family members, and a mean age at death of 46 years (range 40 to 50). We have identified a second family with a later mean age at onset of 50 years (range 48 to 57) and mean age at death of 61 years (range 57 to 68). Family 171 is …

MalePediatricsmedicine.medical_specialtyMutation Missensemedicine.disease_causeAmyloid beta-Protein PrecursorAlzheimer DiseaseValineInternal medicinemedicineAmyloid precursor proteinHumansAge of OnsetAgedAge of Onset Aged Alzheimer Disease/genetics Alzheimer Disease/physiopathology Amino Acid Substitution Amyloid beta-Protein Precursor/genetics Female Humans Malle Middle Aged Mutation Missense PedigreeMutationSettore M-PSI/02 - Psicobiologia E Psicologia FisiologicabiologyMean ageMiddle AgedPedigreeEndocrinologyAmino Acid Substitutionbiology.proteinFemaleNeurology (clinical)IsoleucineNeurology
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