Elizabeth Sanchez Rangel, MD
Assistant ProfessorCards
About
Research
Publications
2024
Deficits in brain glucose transport among younger adults with obesity
Gunawan F, Matson B, Coppoli A, Jiang L, Ding Y, Perry R, Sanchez‐Rangel E, DeAguiar R, Behar K, Rothman D, Mason G, Hwang J. Deficits in brain glucose transport among younger adults with obesity. Obesity 2024, 32: 1329-1338. PMID: 38764181, PMCID: PMC11966602, DOI: 10.1002/oby.24034.Peer-Reviewed Original ResearchBrain glucose transportLean participantsMarkers of insulin resistanceMagnetic resonance spectroscopy scansEffect of obesityAssociated with alterationsLong-term brain functionCerebral glucose metabolic rateGlucose transportGlucose metabolic rateCardiometabolic comorbiditiesBrain energy utilizationPeripheral markersHyperglycemic clampInsulin resistanceObesityBrain glucose uptakeHuman findingsEating behaviorsYounger ageYoung healthy participantsNeurocognitive functionGlucose transport capacityBrain functionNonesterified fatty acids
2023
1541-P: Sympathetic Nervous System Activity in Response to Food Ingestion Is Impacted by Obesity
CHUNG T, DEAJON-JACKSON J, BINI J, SONG H, SANCHEZ RANGEL E, YECKEL C, HWANG J, STACHENFELD N, BELFORT-DEAGUIAR R. 1541-P: Sympathetic Nervous System Activity in Response to Food Ingestion Is Impacted by Obesity. Diabetes 2023, 72 DOI: 10.2337/db23-1541-p.Peer-Reviewed Original ResearchSympathetic nervous system activityMuscle sympathetic nerve activityMixed meal testNormal weightNervous system activityDistribution volume ratioPET-CTHeart rateSympathetic nerve activitySystem activityIngestion of foodMSNA increasesEndogenous NEMeal testNE releaseNerve activityOB subjectsObesity altersKidney diseaseDeltoid muscleLean individualsOB individualsNE transporterObeseFood ingestion
2022
Pathophysiology and management of hypoglycemia in diabetes
Sanchez‐Rangel E, Deajon‐Jackson J, Hwang JJ. Pathophysiology and management of hypoglycemia in diabetes. Annals Of The New York Academy Of Sciences 2022, 1518: 25-46. PMID: 36202764, DOI: 10.1111/nyas.14904.Peer-Reviewed Original ResearchConceptsType 1 diabetes mellitusCounter-regulatory hormonal responsesMechanism of hypoglycemiaDuration of diabetesManageable chronic diseaseOptimal glycemic controlManagement of hypoglycemiaTreatment of hypoglycemiaNew insulin formulationsDiscovery of insulinGlycemic controlDiabetes mellitusTherapeutic optionsBrain glucoseChronic diseasesNovel therapiesDiabetes managementHypoglycemiaPharmacologic targetHormonal responsesInsulin formulationsDiabetesPatientsCurrent literatureDelivery devicesReversibility 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
2020
Glycemic Variability and CNS Inflammation: Reviewing the Connection
Watt C, Sanchez-Rangel E, Hwang JJ. Glycemic Variability and CNS Inflammation: Reviewing the Connection. Nutrients 2020, 12: 3906. PMID: 33371247, PMCID: PMC7766608, DOI: 10.3390/nu12123906.Peer-Reviewed Original ResearchConceptsBlood-brain barrierGlycemic variabilityOxidative stressCentral nervous system outcomesImpact of hyperglycemiaType 2 diabetesCNS inflammationVascular complicationsVascular inflammationCognitive dysfunctionTherapeutic implicationsCognitive deficitsType 1Brain functionNeuroinflammationInflammationDysfunctionGlucoseLow levelsSystem outcomesHigh levelsComplicationsHyperglycemiaDiabetesLatest data
2019
Norepinephrine transporter availability in brown fat is reduced in obesity: a human PET study with [11C] MRB
Sanchez-Rangel E, Gallezot JD, Yeckel CW, Lam W, Belfort-DeAguiar R, Chen MK, Carson RE, Sherwin R, Hwang JJ. Norepinephrine transporter availability in brown fat is reduced in obesity: a human PET study with [11C] MRB. International Journal Of Obesity 2019, 44: 964-967. PMID: 31636373, PMCID: PMC7259982, DOI: 10.1038/s41366-019-0471-4.Peer-Reviewed Original ResearchConceptsBrown adipose tissueDetectable brown adipose tissueDistribution volume ratioMultilinear reference tissue model 2Norepinephrine transporterSympathetic innervationNorepinephrine transporter availabilityHuman brown adipose tissueDense sympathetic innervationPET-CT imagingReference tissue model 2Human PET studiesSupraclavicular regionCaucasian womenTransporter availabilityOccipital cortexObesityTherapeutic targetAdipose tissueBrown fatPET studiesWomenInnervationSelective ligandsEnergy-dissipating propertiesPET Imaging of Pancreatic Dopamine D2 and D3 Receptor Density with 11C-(+)-PHNO in Type 1 Diabetes
Bini J, Sanchez-Rangel E, Gallezot JD, Naganawa M, Nabulsi N, Lim K, Najafzadeh S, Shirali A, Ropchan J, Matuskey D, Huang Y, Herold K, Harris PE, Sherwin RS, Carson RE, Cline GW. PET Imaging of Pancreatic Dopamine D2 and D3 Receptor Density with 11C-(+)-PHNO in Type 1 Diabetes. Journal Of Nuclear Medicine 2019, 61: 570-576. PMID: 31601695, PMCID: PMC7198375, DOI: 10.2967/jnumed.119.234013.Peer-Reviewed Original ResearchConceptsT1DM individualsHealthy controlsDopamine DOutcome measuresAcute C-peptide responseSUVR-1Type 1 diabetes mellitusPET/CT scanningDuration of diabetesMaximal glycemic potentiationC-peptide responseClinical outcome measuresInsulin secretory capacityRoutine clinical measuresD3 receptor densityΒ-cell functionC-peptide releaseQuantitative PET measuresΒ-cell massDynamic PET scansQuantitative outcome measuresAgonist PET radioligandDiabetes mellitusReceptor agonistInsulin antibodiesIn a Free-Living Setting, Obesity Is Associated With Greater Food Intake in Response to a Similar Premeal Glucose Nadir
Kim J, Lam W, Wang Q, Parikh L, Elshafie A, Sanchez-Rangel E, Schmidt C, Li F, Hwang J, Belfort-DeAguiar R. In a Free-Living Setting, Obesity Is Associated With Greater Food Intake in Response to a Similar Premeal Glucose Nadir. The Journal Of Clinical Endocrinology & Metabolism 2019, 104: 3911-3919. PMID: 31087061, PMCID: PMC6667277, DOI: 10.1210/jc.2019-00240.Peer-Reviewed Original ResearchFood intakeGlucose levelsNW individualsOB individualsPremeal glucoseCGM glucose levelsNormal-weight individualsBlood glucose levelsContinuous glucose-monitoring systemGreater food intakeInterstitial glucose levelsGlucose-monitoring systemGlucose nadirsWeight individualsGlucose profilesObeseFood logsEffect of glucoseHealthy individualsFree-Living SettingsIntakePostprandial ratesObesityLevel stimuliPredictive effect
2018
Glycemic Variability and Brain Glucose Levels in T1DM
Hwang JJ, Jiang L, Sanchez Rangel E, Fan X, Ding Y, Lam W, Leventhal J, Dai F, Rothman DL, Mason GF, Sherwin RS. Glycemic Variability and Brain Glucose Levels in T1DM. Diabetes 2018, 68: db180722. PMID: 30327383, PMCID: PMC6302539, DOI: 10.2337/db18-0722.Peer-Reviewed Original ResearchConceptsBrain glucose levelsGlycemic variabilityGlucose levelsHyperglycemic clampType 1 diabetes mellitusPlasma glucose levelsBrain glucose transportHealthy control participantsDiabetes mellitusBrain glucoseControl ratsContinuous glucose monitorGlucose clampRat modelOccipital lobeMRS scanningT1DMGlucose kineticsControl participantsGlucose transport kineticsGlucose monitorSimilar changesRatsClampGlucose transportSkeletal disease in a father and daughter with a novel monoallelic WNT1 mutation
Ang K, Sanchez Rangel E, Yuan Q, Wu D, Carpenter TO, Insogna K. Skeletal disease in a father and daughter with a novel monoallelic WNT1 mutation. Bone Rep. 2018;9:154-8.Peer-Reviewed Original Research
Clinical Trials
Current Trials
Mechanisms for restoration of hypoglycemia awareness
HIC ID2000023189RoleSub InvestigatorPrimary Completion Date04/30/2023Recruiting ParticipantsImaging pancreatic beta-cells with PET neuroimaging agent 11C-PHNO
HIC ID2000021287RoleSub InvestigatorPrimary Completion Date07/31/2021Recruiting ParticipantsGenderBothAge18 years - 65 years
Academic Achievements & Community Involvement
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Endocrinology
300 Cedar Street
New Haven, CT 06519
United States