2022
Deletion of Jazf1 gene causes early growth retardation and insulin resistance in mice
Lee H, Jang H, Li H, Samuel V, Dudek K, Osipovich A, Magnuson M, Sklar J, Shulman G. Deletion of Jazf1 gene causes early growth retardation and insulin resistance in mice. Proceedings Of The National Academy Of Sciences Of The United States Of America 2022, 119: e2213628119. PMID: 36442127, PMCID: PMC9894197, DOI: 10.1073/pnas.2213628119.Peer-Reviewed Original ResearchConceptsKO miceEarly growth retardationInsulin resistanceFat massGrowth retardationAge-matched wild-type miceHepatic nuclear factor 4 alphaGH-IGF-1 axisHigh-fat diet feedingKO liversHyperinsulinemic-euglycemic clamp techniquePlasma growth hormone concentrationInsulin-like growth factor-1Type 2 diabetesGrowth hormone concentrationsIGF-1 expressionWild-type miceLean body massMuscle insulin resistanceGrowth factor-1Nuclear factor 4 alphaInsulin sensitivityDiet feedingPlasma concentrationsHormone concentrations
2019
Adipose glucocorticoid action influences whole‐body metabolism via modulation of hepatic insulin action
Abulizi A, Camporez JP, Jurczak MJ, Høyer KF, Zhang D, Cline GW, Samuel VT, Shulman GI, Vatner DF. Adipose glucocorticoid action influences whole‐body metabolism via modulation of hepatic insulin action. The FASEB Journal 2019, 33: 8174-8185. PMID: 30922125, PMCID: PMC6593882, DOI: 10.1096/fj.201802706r.Peer-Reviewed Original ResearchConceptsWhole-body metabolismHepatic insulin actionHepatic insulin resistanceGlucocorticoid actionHepatic steatosisHepatic glycogen synthesisInsulin resistanceAdipose lipolysisFood intakeInsulin actionAdipose triglyceride lipase expressionGlucose-dependent organsReceptor knockout miceOral glucose challengeHepatic lipid accumulationHigh-fat dietHyperinsulinemic-euglycemic conditionsGlycogen synthesisProtein kinase B phosphorylationInsulin responseGlucose challengeHepatic insulin responseHepatic insulinMetabolic cagesSteatosis
2010
Deletion of the α-Arrestin Protein Txnip in Mice Promotes Adiposity and Adipogenesis While Preserving Insulin Sensitivity
Chutkow WA, Birkenfeld AL, Brown JD, Lee HY, Frederick DW, Yoshioka J, Patwari P, Kursawe R, Cushman SW, Plutzky J, Shulman GI, Samuel VT, Lee RT. Deletion of the α-Arrestin Protein Txnip in Mice Promotes Adiposity and Adipogenesis While Preserving Insulin Sensitivity. Diabetes 2010, 59: 1424-1434. PMID: 20299477, PMCID: PMC2874703, DOI: 10.2337/db09-1212.Peer-Reviewed Original ResearchConceptsTxnip knockout miceInsulin resistanceInsulin sensitivityKnockout miceInsulin responsivenessTXNIP expressionSkeletal muscleWild-type littermate control miceStandard chow dietType 2 diabetes pathogenesisHigh-fat dietHigh-fat feedingLittermate control miceGene-deleted miceInhibits glucose uptakeControl miceChow dietAdipose massMore insulinCaloric excessFat massDiabetes pathogenesisMouse embryonic fibroblastsRegulator of adipogenesisPPARgamma expression
2001
Disruption of Sur2-containing KATP channels enhances insulin-stimulated glucose uptake in skeletal muscle
Chutkow W, Samuel V, Hansen P, Pu J, Valdivia C, Makielski J, Burant C. Disruption of Sur2-containing KATP channels enhances insulin-stimulated glucose uptake in skeletal muscle. Proceedings Of The National Academy Of Sciences Of The United States Of America 2001, 98: 11760-11764. PMID: 11562480, PMCID: PMC58803, DOI: 10.1073/pnas.201390398.Peer-Reviewed Original ResearchMeSH KeywordsAnalysis of VarianceAnimalsATP-Binding Cassette TransportersBiological TransportBlood GlucoseDeoxyglucoseExonsGlucoseGlucose Clamp TechniqueGlucose Tolerance TestGlucose Transporter Type 4InsulinIntronsMiceMice, KnockoutMonosaccharide Transport ProteinsMuscle ProteinsMuscle, SkeletalPolymerase Chain ReactionPotassium ChannelsPotassium Channels, Inwardly RectifyingReceptors, DrugRNA, MessengerSignal TransductionSodium-Potassium-Exchanging ATPaseSulfonylurea ReceptorsTriglyceridesWeight GainConceptsSkeletal muscleInsulin-stimulated glucose transportGene-targeting strategiesGlucose uptake mechanismsInsulin-stimulated glucose uptakeHomozygous null miceRegulatory subunitInsertional mutagenesisWild typeEnhanced glucose useProtection of tissuesDiverse arrayGlucose transportChannel activityUptake mechanismNull miceATP-sensitive potassium channelsPotassium channelsGlucose uptakeMembrane excitabilityFuture therapeutic approachesWild-type littermatesTarget blood glucose levelsInsulin actionPhysiologic function