2022
Stress-level glucocorticoids increase fasting hunger and decrease cerebral blood flow in regions regulating eating
Bini J, Parikh L, Lacadie C, Hwang JJ, Shah S, Rosenberg SB, Seo D, Lam K, Hamza M, De Aguiar RB, Constable T, Sherwin RS, Sinha R, Jastreboff AM. Stress-level glucocorticoids increase fasting hunger and decrease cerebral blood flow in regions regulating eating. NeuroImage Clinical 2022, 36: 103202. PMID: 36126514, PMCID: PMC9486604, DOI: 10.1016/j.nicl.2022.103202.Peer-Reviewed Original ResearchMeSH KeywordsAppetiteCerebrovascular CirculationGlucocorticoidsHumansHungerHydrocortisoneInsulinMagnetic Resonance ImagingConceptsCerebral blood flowRegional cerebral blood flowBlood flowMetabolic hormonesRandomized double-blind cross-over designDouble-blind cross-over designStress level glucocorticoidsPrimary sensory cortexPerfusion magnetic resonanceCross-over designMedial temporal gyrusWhole-brain voxelMedial brainstemSaline daysOvernight infusionCBF responseHunger ratingsPlasma insulinGlucocorticoid effectsHedonic signalsObesity riskLimbic regionsFood intakeNeural regulationDistinct brain networks
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 ResearchMeSH KeywordsAdolescentAdultAwarenessBlood GlucoseCerebral CortexDiabetes Mellitus, Type 1FemaleHumansHypoglycemiaMagnetic Resonance ImagingMaleMiddle AgedConceptsMild 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 ResearchMeSH KeywordsAdultBlood GlucoseBrainDiabetes Mellitus, Type 2Fatty AcidsFemaleGlucoseHumansHyperglycemiaInsulinMagnetic Resonance ImagingMaleMiddle AgedObesityYoung AdultConceptsGlucose 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