2015
Blunted suppression of acyl‐ghrelin in response to fructose ingestion in obese adolescents: The role of insulin resistance
Van Name M, Giannini C, Santoro N, Jastreboff AM, Kubat J, Li F, Kursawe R, Savoye M, Duran E, Dziura J, Sinha R, Sherwin RS, Cline G, Caprio S. Blunted suppression of acyl‐ghrelin in response to fructose ingestion in obese adolescents: The role of insulin resistance. Obesity 2015, 23: 653-661. PMID: 25645909, PMCID: PMC4548801, DOI: 10.1002/oby.21019.Peer-Reviewed Original ResearchConceptsAcyl ghrelinObese insulinGlucose ingestionInsulin resistanceObese adolescentsCross-over designFructose ingestionGut hormonesChildhood obesityInsulin sensitivityFructose consumptionEffect of glucoseDiminished suppressionRandom orderIngestionObesityPYYAdolescentsInsulinSuppression differencesGlucoseMinutesResponseGhrelinOIR
2014
Reversal of Early Abnormalities in Glucose Metabolism in Obese Youth: Results of an Intensive Lifestyle Randomized Controlled Trial
Savoye M, Caprio S, Dziura J, Camp A, Germain G, Summers C, Li F, Shaw M, Nowicka P, Kursawe R, DePourcq F, Kim G, Tamborlane WV. Reversal of Early Abnormalities in Glucose Metabolism in Obese Youth: Results of an Intensive Lifestyle Randomized Controlled Trial. Diabetes Care 2014, 37: 317-324. PMID: 24062325, PMCID: PMC3898759, DOI: 10.2337/dc13-1571.Peer-Reviewed Original ResearchConceptsStandard of careClinical careBlood glucoseObese adolescentsObese youthOral glucose tolerance test glucoseIntensive lifestyle modificationDiabetes Prevention ProgramStandard clinical careInsulin sensitivity indexHealthy lifestyle programType 2 diabetesRisk of T2DChildhood obesity epidemicΒ-cell dysfunctionLifestyle modificationControlled TrialsOGTT glucosePrimary outcomeGlucose toleranceInsulin resistanceLifestyle programAnthropometric assessmentEarly abnormalitiesGlucose levels
2009
Simple Exercise Recovery Index for Sympathetic Overactivity Is Linked to Insulin Resistance
YECKEL CW, GULANSKI B, ZGORSKI ML, DZIURA J, PARISH R, SHERWIN RS. Simple Exercise Recovery Index for Sympathetic Overactivity Is Linked to Insulin Resistance. Medicine & Science In Sports & Exercise 2009, 41: 505-515. PMID: 19204601, DOI: 10.1249/mss.0b013e31818afa2f.Peer-Reviewed Original ResearchConceptsOral glucose tolerance testSympathetic overactivityInsulin resistancePercent body fatExercise recoveryHR recoveryParasympathetic functionBody fatWhole-body insulin sensitivity indexEffective clinical meansHomeostasis assessment modelRecovery indexMeal-induced thermogenesisGlucose tolerance testInsulin sensitivity indexNovel functional indicesParasympathetic dysfunctionCause mortalitySympathetic dysfunctionSympathetic functionObese adolescentsTolerance testInitial plateau phaseIntense exerciseParasympathetic controlGlucose dysregulation and hepatic steatosis in obese adolescents: Is there a link?
Cali AM, De Oliveira AM, Kim H, Chen S, Reyes‐Mugica M, Escalera S, Dziura J, Taksali SE, Kursawe R, Shaw M, Savoye M, Pierpont B, Constable RT, Caprio S. Glucose dysregulation and hepatic steatosis in obese adolescents: Is there a link? Hepatology 2009, 49: 1896-1903. PMID: 19434725, PMCID: PMC2692562, DOI: 10.1002/hep.22858.Peer-Reviewed Original ResearchConceptsHepatic fat fractionObese adolescentsHepatic fat contentGlucose dysregulationHepatic steatosisMetabolic syndromeFatty liverInsulin sensitivityTotal fatHigher hepatic fat fractionStandard oral glucose tolerance testOral glucose tolerance testTwo-hour plasma glucoseSubcutaneous fat ratioHomeostasis model assessmentAbdominal fat distributionGlucose tolerance testProinflammatory milieuHMW adiponectinIL-6Insulin resistanceMatsuda indexTolerance testPlasma glucoseFat distribution
2008
Primary Defects in β-Cell Function Further Exacerbated by Worsening of Insulin Resistance Mark the Development of Impaired Glucose Tolerance in Obese Adolescents
Cali AM, Man CD, Cobelli C, Dziura J, Seyal A, Shaw M, Allen K, Chen S, Caprio S. Primary Defects in β-Cell Function Further Exacerbated by Worsening of Insulin Resistance Mark the Development of Impaired Glucose Tolerance in Obese Adolescents. Diabetes Care 2008, 32: 456-461. PMID: 19106382, PMCID: PMC2646028, DOI: 10.2337/dc08-1274.Peer-Reviewed Original ResearchConceptsImpaired glucose toleranceNormal glucose toleranceBeta-cell functionBeta-cell responsivityObese adolescentsGlucose toleranceDisposition indexOral glucose tolerance testProgressive declinePre-diabetic stateGlucose tolerance testBMI z-scorePrimary defectGlucose intoleranceGlucose areaTolerance testPlasma glucoseInsulin sensitivityC-peptideInsulin secretionNonprogressorsZ-scoreNatural historyProgressorsPercent fatShort‐term metabolic and cardiovascular effects of metformin in markedly obese adolescents with normal glucose tolerance
Burgert TS, Duran EJ, Goldberg‐Gell R, Dziura J, Yeckel CW, Katz S, Tamborlane WV, Caprio S. Short‐term metabolic and cardiovascular effects of metformin in markedly obese adolescents with normal glucose tolerance. Pediatric Diabetes 2008, 9: 567-576. PMID: 18761646, DOI: 10.1111/j.1399-5448.2008.00434.x.Peer-Reviewed Original ResearchConceptsNormal glucose toleranceInsulin sensitivityGlucose toleranceObese childrenDouble-blind clinical trialType 2 diabetes mellitusSubcutaneous fatCardio-metabolic consequencesBaseline insulin sensitivityImproved insulin sensitivityInsulin-resistant adolescentsHeart rate recoveryLong-term treatmentDeep subcutaneous fatShort-term useMagnetic resonance imagingPlacebo groupCardiovascular effectsDiabetes mellitusMetS groupClinical effectsLipid parametersInsulin sensitizersInflammatory cytokinesObese adolescents
2007
High Visceral and Low Abdominal Subcutaneous Fat Stores in the Obese Adolescent A Determinant of an Adverse Metabolic Phenotype
Taksali SE, Caprio S, Dziura J, Dufour S, Calí A, Goodman TR, Papademetris X, Burgert TS, Pierpont BM, Savoye M, Shaw M, Seyal AA, Weiss R. High Visceral and Low Abdominal Subcutaneous Fat Stores in the Obese Adolescent A Determinant of an Adverse Metabolic Phenotype. Diabetes 2007, 57: 367-371. PMID: 17977954, DOI: 10.2337/db07-0932.Peer-Reviewed Original ResearchConceptsMetabolic syndromeObese adolescentsInsulin resistanceVisceral fatSubcutaneous fatAdverse metabolic phenotypeC-reactive proteinSevere metabolic complicationsAbdominal subcutaneous fatBMI z-scoreProton magnetic resonance spectroscopyMulti-ethnic cohortFat-free massSubcutaneous fat depotsMagnetic resonance imagingSubcutaneous fat storesMetabolic complicationsTotal adiponectinHepatic fatLiver fatTriglyceride levelsInterleukin-6Visceral depotsOdds ratioC-peptideInterethnic Differences in Muscle, Liver and Abdominal Fat Partitioning in Obese Adolescents
Liska D, Dufour S, Zern TL, Taksali S, Calí AM, Dziura J, Shulman GI, Pierpont BM, Caprio S. Interethnic Differences in Muscle, Liver and Abdominal Fat Partitioning in Obese Adolescents. PLOS ONE 2007, 2: e569. PMID: 17593968, PMCID: PMC1892806, DOI: 10.1371/journal.pone.0000569.Peer-Reviewed Original ResearchConceptsMagnetic resonance imagingLiver fat contentHepatic fat contentInsulin resistanceObese adolescentsAfrican AmericansOral glucose tolerance testingObese Hispanic adolescentsAbdominal fat distributionGlucose tolerance testingType 2 diabetesTotal body fatEthnic differencesClear ethnic differencesVisceral fatInsulin sensitivityFat distributionTolerance testingIMCL levelsMultiethnic cohortObese youthFat contentAbdominal cavityBody fatSoleus muscle
2005
The “Obese Insulin-Sensitive” Adolescent: Importance of Adiponectin and Lipid Partitioning
Weiss R, Taksali SE, Dufour S, Yeckel CW, Papademetris X, Cline G, Tamborlane WV, Dziura J, Shulman GI, Caprio S. The “Obese Insulin-Sensitive” Adolescent: Importance of Adiponectin and Lipid Partitioning. The Journal Of Clinical Endocrinology & Metabolism 2005, 90: 3731-3737. PMID: 15797955, DOI: 10.1210/jc.2004-2305.Peer-Reviewed Original ResearchConceptsInsulin sensitivityVisceral fatLipid depositionObese insulin-resistant adolescentsObese insulin-sensitive subjectsNormal glucose tolerancePeripheral insulin sensitivityIntramyocellular lipid contentBody mass indexInsulin-sensitive subjectsHyperinsulinemic-euglycemic clampInsulin-resistant adolescentsInsulin-sensitive controlsWide interindividual variationLipid partitioningLower lipid depositionPercent body fatMagnetic resonance imagingImportance of adiponectinObese insulinObese groupGlucose toleranceMass indexObese adolescentsIntramyocellular lipidsAnthropometric and psychosocial changes in obese adolescents enrolled in a Weight Management Program
Savoye M, Berry D, Dziura J, Shaw M, Serrecchia JB, Barbetta G, Rose P, Lavietes S, Caprio S. Anthropometric and psychosocial changes in obese adolescents enrolled in a Weight Management Program. Journal Of The Academy Of Nutrition And Dietetics 2005, 105: 364-370. PMID: 15746823, DOI: 10.1016/j.jada.2004.12.009.Peer-Reviewed Original ResearchConceptsBMI z-scoreWeight management programBody fat percentNondiet approachObese adolescentsZ-scoreComprehensive weight management programSuperior short-term resultsBody mass index z-scoreEntire groupFat percentStructured meal planImproved long-term resultsLong-term resultsIndex z-scoreShort-term resultsBetter food choicesDietary ApproachesLong-term effectsCovariance pattern modelMeal planPsychosocial changesOutcome variablesManagement programScores
2003
Prediabetes in obese youth: a syndrome of impaired glucose tolerance, severe insulin resistance, and altered myocellular and abdominal fat partitioning
Weiss R, Dufour S, Taksali SE, Tamborlane WV, Petersen KF, Bonadonna RC, Boselli L, Barbetta G, Allen K, Rife F, Savoye M, Dziura J, Sherwin R, Shulman GI, Caprio S. Prediabetes in obese youth: a syndrome of impaired glucose tolerance, severe insulin resistance, and altered myocellular and abdominal fat partitioning. The Lancet 2003, 362: 951-957. PMID: 14511928, PMCID: PMC2995523, DOI: 10.1016/s0140-6736(03)14364-4.Peer-Reviewed Original ResearchConceptsImpaired glucose toleranceNormal glucose toleranceGlucose toleranceObese childrenInsulin resistanceObese adolescentsGlucose disposalInsulin sensitivitySevere peripheral insulin resistanceNon-oxidative glucose metabolismSubcutaneous fatH plasma glucose concentrationsAbdominal fat partitioningVisceral lipid contentsPeripheral glucose disposalHigher intramyocellular lipid contentAbdominal fat distributionDegree of obesityIntramyocellular lipid contentPeripheral insulin resistanceHigh visceral fatAbdominal subcutaneous fatEuglycaemic hyperinsulinaemic clampSevere insulin resistancePlasma glucose concentrationLow Adiponectin Levels in Adolescent Obesity: A Marker of Increased Intramyocellular Lipid Accumulation
Weiss R, Dufour S, Groszmann A, Petersen K, Dziura J, Taksali SE, Shulman G, Caprio S. Low Adiponectin Levels in Adolescent Obesity: A Marker of Increased Intramyocellular Lipid Accumulation. The Journal Of Clinical Endocrinology & Metabolism 2003, 88: 2014-2018. PMID: 12727947, DOI: 10.1210/jc.2002-021711.Peer-Reviewed Original ResearchConceptsAdiponectin levelsInsulin sensitivityAdolescent obesityObese adolescentsPutative modulatory effectsLower adiponectin levelsAbdominal fat distributionIntramyocellular lipid contentPlasma adiponectin levelsIntramyocellular lipid accumulationEuglycemic hyperinsulinemic clampTotal body fatMagnetic resonance imagingCentral adiposityPediatric populationInsulin resistanceIntramuscular lipid contentTriglyceride levelsFat distributionLipid contentPlasma triglyceridesFree fatty acidsBody fatModulatory effectsAdiponectin