Mechanismsofintrahepatictriglycerideaccumulation
WorldJournalofGastroenterology
頁數(shù): 10 2016-01-28
摘要: HepaticsteatosisdefinedaslipidaccumulationinhepatocytesisveryfrequentlyfoundinadultsandobeseadolescentsintheWesternWorld.Etiologically,obesityandassociatedinsulinresistanceorexcessalcoholintakearethemostfrequentcausesofhepaticsteatosis.However,steatosisalsooftenoccurswithchronichepatitisCvirus(HCV)infectionandisalsofoundinrarebutpotentiallylife-threateningliverdiseasesofpregnancy.Clinicalsignificanceandoutcomeofhepatictriglycerideaccumulationarehighlydependentonetiologyandhistologicalpatternofsteatosis.Thisreviewsummarizescurrentconceptsofpathophysiologyofcommoncausesofhepaticsteatosis,includingnon-alcoholicfattyliverdisease(NAFLD),alcoholicfattyliverdisease,chronicHCVinfections,drug-inducedformsofhepaticsteatosis,andacutefattyliverofpregnancy.RegardingthepathophysiologyofNAFLD,thisworkfocusesontheclosecorrelationbetweeninsulinresistanceandhepatictriglycerideaccumulation,highlightingthepotentialharmfuleffectsofsystemicinsulinresistanceonhepaticmetabolismoffattyacidsontheonesideandtheroleoflipidintermediatesoninsulinsignallingontheotherside.CurrentstudiesonlipiddropletmorphogenesishaveidentifiednovelcandidateproteinsandenzymesinNAFLD. (共10頁)