2009
Recurrent Antecedent Hypoglycemia Alters Neuronal Oxidative Metabolism In Vivo
Jiang L, Herzog RI, Mason GF, de Graaf RA, Rothman DL, Sherwin RS, Behar KL. Recurrent Antecedent Hypoglycemia Alters Neuronal Oxidative Metabolism In Vivo. Diabetes 2009, 58: 1266-1274. PMID: 19276443, PMCID: PMC2682668, DOI: 10.2337/db08-1664.Peer-Reviewed Original ResearchConceptsAntecedent recurrent hypoglycemiaAcute hypoglycemiaRecurrent hypoglycemiaEuglycemic conditionsGlucose utilizationRecurrent insulin-induced hypoglycemiaWhole-brain glucose metabolismNeuronal oxidative metabolismInsulin-induced hypoglycemiaHyperinsulinemic-hypoglycemic clampAntecedent hypoglycemiaPyruvate dehydrogenase fluxHigh glucose utilizationBrain metabolismRat modelHypoglycemiaGlucose metabolismHypoglycemic conditionsBrain metabolitesBrain functionTricarboxylic acid cycle activityOxidative metabolismEnergy substratesEuglycemiaInfusion
2008
Increased GABAergic Tone in the Ventromedial Hypothalamus Contributes to Suppression of Counterregulatory Reponses After Antecedent Hypoglycemia
Chan O, Cheng H, Herzog R, Czyzyk D, Zhu W, Wang A, McCrimmon RJ, Seashore MR, Sherwin RS. Increased GABAergic Tone in the Ventromedial Hypothalamus Contributes to Suppression of Counterregulatory Reponses After Antecedent Hypoglycemia. Diabetes 2008, 57: 1363-1370. PMID: 18375441, PMCID: PMC5518793, DOI: 10.2337/db07-1559.Peer-Reviewed Original ResearchConceptsVMH GABA levelsVentromedial hypothalamusGlutamic acid decarboxylaseHypoglycemic animalsHypoglycemic ratsSympathoadrenal responseRecurrent hypoglycemiaCounterregulatory responsesGABAergic toneInhibitory toneGABA levelsHypoglycemia-associated autonomic failureGABAergic inhibitory toneOnset of hypoglycemiaGABA synthetic enzymeQuantitative RT-PCRAntecedent hypoglycemiaAutonomic failureHypoglycemic stimulusReceptor blockadeEpinephrine releaseAcute hypoglycemiaReceptor antagonistInhibitory neurotransmitterSubsequent bout