2022
Reversibility of brain glucose kinetics in type 2 diabetes mellitus
Sanchez-Rangel E, Gunawan F, Jiang L, Savoye M, Dai F, Coppoli A, Rothman DL, Mason GF, Hwang JJ. Reversibility of brain glucose kinetics in type 2 diabetes mellitus. Diabetologia 2022, 65: 895-905. PMID: 35247067, PMCID: PMC8960594, DOI: 10.1007/s00125-022-05664-y.Peer-Reviewed Original ResearchConceptsType 2 diabetesBrain glucose levelsGlucose levelsHyperglycaemic clampGlycaemic controlBrain glucoseUncontrolled type 2 diabetesType 2 diabetes mellitusConclusions/interpretationThese findingsAims/hypothesisWePlasma glucose levelsLinear mixed-effects regression modelsMixed-effects regression modelsContinuous glucose monitoringMinimal weight changeMagnitude of improvementAge 44.8MethodsEight individualsSD HbA1cDiabetes mellitusCerebral glucoseInterpretationThese findingsWeek interventionRegimen intensificationPost intervention
2018
Hypoglycemia unawareness in type 1 diabetes suppresses brain responses to hypoglycemia
Hwang JJ, Parikh L, Lacadie C, Seo D, Lam W, Hamza M, Schmidt C, Dai F, Sejling AS, Belfort-DeAguiar R, Constable RT, Sinha R, Sherwin R. Hypoglycemia unawareness in type 1 diabetes suppresses brain responses to hypoglycemia. Journal Of Clinical Investigation 2018, 128: 1485-1495. PMID: 29381484, PMCID: PMC5873861, DOI: 10.1172/jci97696.Peer-Reviewed Original ResearchConceptsMild hypoglycemiaHypoglycemia awarenessType 1 diabetes mellitus patientsPrefrontal cortexHormonal counterregulatory responsesDiabetes mellitus patientsImpaired hypoglycemia awarenessAltered activation patternsAngular gyrusType 1 diabetesBlood glucose levelsHypoglycemia-induced changesBrain responsesBrain activityHypoglycemia symptom scoresAlters brain activityClinical Translational Science AwardsHyperinsulinemic euglycemicHypoglycemia unawarenessCounterregulatory responsesHypoglycemic clampMellitus patientsMRI brainSymptom scoresNondiabetic individuals
2017
Blunted rise in brain glucose levels during hyperglycemia in adults with obesity and T2DM
Hwang JJ, Jiang L, Hamza M, Rangel E, Dai F, Belfort-DeAguiar R, Parikh L, Koo BB, Rothman DL, Mason G, Sherwin RS. Blunted rise in brain glucose levels during hyperglycemia in adults with obesity and T2DM. JCI Insight 2017, 2: e95913. PMID: 29046482, PMCID: PMC5846903, DOI: 10.1172/jci.insight.95913.Peer-Reviewed Original ResearchConceptsGlucose levelsPlasma free fatty acid levelsSimilar plasma glucose levelsFree fatty acid levelsCerebral glucose metabolismPlasma glucose levelsBrain glucose levelsFatty acid levelsAltered feeding behaviorGlucose incrementHyperglycemic clampBrain glucoseCerebral functionLean participantsOccipital lobeRodent modelsGlucose metabolismObesityT2DMGlucose responseHyperglycemiaNeurocognitive consequencesSimilar findingsAcid levelsIntracerebral glucose