2025
Determinants of increased muscle insulin sensitivity of exercise-trained versus sedentary normal weight and overweight individuals
Pesta D, Anadol-Schmitz E, Sarabhai T, Kamp Y, Gancheva S, Trinks N, Zaharia O, Mastrototaro L, Lyu K, Habets I, Kamp-Bruls Y, Dewidar B, Weiss J, Schrauwen-Hinderling V, Zhang D, Gaspar R, Strassburger K, Kupriyanova Y, Al-Hasani H, Szendroedi J, Schrauwen P, Phielix E, Shulman G, Roden M. Determinants of increased muscle insulin sensitivity of exercise-trained versus sedentary normal weight and overweight individuals. Science Advances 2025, 11: eadr8849. PMID: 39742483, PMCID: PMC11691647, DOI: 10.1126/sciadv.adr8849.Peer-Reviewed Original ResearchConceptsOverweight-to-obeseNormal weightEndurance-trained humansMuscle mitochondrial contentAthlete's paradoxTrained athletesExercise-trainedOverweight individualsAthletesObesity subtypesObservational studyIntramyocellular triglyceride accumulationInsulin sensitivityHigher insulin sensitivityMitochondrial contentIncreased insulin sensitivityMuscleFemale individualsIndividualsInsulin resistanceObesityMitochondrial partitioningIncreased calpainNPKC activityProtein kinase C
2024
SGLT2 inhibition alters substrate utilization and mitochondrial redox in healthy and failing rat hearts
Goedeke L, Ma Y, Gaspar R, Nasiri A, Lee J, Zhang D, Galsgaard K, Hu X, Zhang J, Guerrera N, Li X, LaMoia T, Hubbard B, Haedersdal S, Wu X, Stack J, Dufour S, Butrico G, Kahn M, Perry R, Cline G, Young L, Shulman G. SGLT2 inhibition alters substrate utilization and mitochondrial redox in healthy and failing rat hearts. Journal Of Clinical Investigation 2024, 134: e176708. PMID: 39680452, PMCID: PMC11645152, DOI: 10.1172/jci176708.Peer-Reviewed Original ResearchConceptsSodium-glucose cotransporter type 2Heart failureKetone oxidationGas chromatography-mass spectrometryFatty acid oxidationLeft ventricular ejection fractionReduced myocardial oxidative stressVentricular ejection fractionKetone supplementationWeeks of treatmentMyocardial oxidative stressDecreased pyruvate oxidationInduce heart failurePlasma glucose levelsIn vivo effectsSGLT2i treatmentEjection fractionAssociated with improvementsAwake ratsSGLT2 inhibitionCardioprotective benefitsLiquid chromatography-tandem mass spectrometryPlasma ketonesRates of ketonizationChromatography-tandem mass spectrometryCeramide synthesis inhibitors prevent lipid-induced insulin resistance through the DAG-PKCε-insulin receptorT1150 phosphorylation pathway
Xu W, Zhang D, Ma Y, Gaspar R, Kahn M, Nasiri A, Murray S, Samuel V, Shulman G. Ceramide synthesis inhibitors prevent lipid-induced insulin resistance through the DAG-PKCε-insulin receptorT1150 phosphorylation pathway. Cell Reports 2024, 43: 114746. PMID: 39302831, DOI: 10.1016/j.celrep.2024.114746.Peer-Reviewed Original ResearchLipid-induced hepatic insulin resistanceHepatic insulin resistancePhosphorylation pathwayAntisense oligonucleotidesCeramide synthesis inhibitorsLipid-induced insulin resistanceMyriocin treatmentCeramide synthesisDihydroceramide desaturaseInsulin resistanceHepatic ceramideMyriocinCeramideCeramide contentInsulin-sensitizing effectsPhosphorylationHepatic insulin sensitivityPathwaySynthetic pathwayDES1Glucose productionSynthesis inhibitorDGAT2DesaturaseInhibition
2023
Lysophosphatidic acid triggers inflammation in the liver and white adipose tissue in rat models of 1-acyl-sn-glycerol-3-phosphate acyltransferase 2 deficiency and overnutrition
Sakuma I, Gaspar R, Luukkonen P, Kahn M, Zhang D, Zhang X, Murray S, Golla J, Vatner D, Samuel V, Petersen K, Shulman G. Lysophosphatidic acid triggers inflammation in the liver and white adipose tissue in rat models of 1-acyl-sn-glycerol-3-phosphate acyltransferase 2 deficiency and overnutrition. Proceedings Of The National Academy Of Sciences Of The United States Of America 2023, 120: e2312666120. PMID: 38127985, PMCID: PMC10756285, DOI: 10.1073/pnas.2312666120.Peer-Reviewed Original Research
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