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GenWay/Anti IA2/GWB-521228/1x96 Assays
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4000-520-616
Description:
Introduction | Type1diabetes,alsoknownasinsulin-dependentdiabetesmellitus(IDDM),resultsfromachronicautoimmunedestructionoftheinsulin-secretingpancreaticbetacells,probablyinitiatedbyexposureofgeneticallysusceptIBLehosttoanenvironmentalagent.Autoimmunedestructionofbetacellsisthoughttobecompletelyasymptomaticuntil80-90%ofthecellsarelost.Thisprocessmaytakeyearstocompleteandmayoccuratanytime.Duringthepreclinicalphase,thisautoimmuneprocessismarkedbycirculatingautoantibodiestobetacellantigens.Theseautoantibodiesarepresentyearsbeforetheonsetoftype1diabetesandpriortoclinicalsymptoms.Earlystudiesutilizedtheimmunofluorescencetestforislet-cellantibodies(ICA),whichhasbeendifficulttostandardizeandisnowreplacedbyacombinationofseveralrADIoimmunoassaysforantibodiesagainstspecificbetacellantigens,suchasinsulin(IAA),glutamicaciddecarboxylase(GAD)andtyrosinephosphataseICA512(IA2).IA2,amemberoftheproteintyrosinephosphatasesfamilyislocalizedinthedensegranulesofpancreaticbetacellsandtheseconddefinedrecombinantisletcellantigen.IA2sharessequenceidentitywiththeisletcellantigen512.ThehigherfrequencyofantibodiestoIA2isexplainedbythepresenceofautoantibodiesdirectedtotheCOOHterminusofIA2whichislackingintheICA512molecule.IA2autoantibodiesarepresentinthemajorityofindividualswithnew-onsettype1diabetesandinindividualsinthepre-diabeticphaseofthedisease.TheappearanceofautoantibodiestoIA2seemstobecorrelatedwiththerapidprogressiontooverttype1diabetes.ThecombinationoftestsforGAD65andIA2autoantibodiesishighlyrelevantforriskassessmentoftype1diabetesinchildrenandadolescence.ThescreeningforGAD65andIA2autoantibodiesdetectmorethan90%ofsubjectsatriskfortype1diabetesandmay,therefore,possessthepotentialtoreplaceICAtechnique. |
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IntendedUse | Anti-IA2kitisanenzymeimmunoassayforthequantitativedeterminationofautoantibodiestoProteinTyrosinePhosphatase(IA2Abs)inhumanserumorplasma.AntiIA2kitisintendedforlaboratoryuseonly. |
PrincipleoftheAssay | TheassaysystemusestheABIlityofIA2AbsactingdivalentlyandformingabridgebetweenimmobilizedIA2andliquid-phaseIA2-Biotin.InthefirststepIA2AbfromthesamplebindtoIA2coatedonthemicrotiterplate.InasecondstepIA2-Biotinbindstothiscomplex.TheboundIA2-BiotincorrelateswiththeamountofIA2Absinpatient’sSerumorplasma.UnboundIA2-Biotinisremovedbywashing.TheboundIA2-BiotincouldbequantifiedbyadditionofStreptavidin-peroxidaseandachromogenicsubstrate(TMB)andreadingtheopticaldensity(OD)at450nm. |
AdditionalInformation:
Name | AntiIA2 |
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RelatedProductNames | Anti-tyrosinephosphataseICA512(IA2)ELISAKit,AntityrosinephosphataseICA512ELISA,InsulinAntibodies(IAA)ELISA,AntiInsulinAntibodyELISAKit,AntiIAAELISAKit,AntiIA2ELISA,DiabetesAssay |
MolecularWeight | 0.5 |
Concentration | LotSpecific |
Applications | EnzymeimmunoassayforthequantitativedeterminationofIA2inhumanserumorplasma |
Reactivity | Human |
IntendedUse | ResearchUseOnly |