2024
Daily glucose variability is associated with intrahepatic fat content, β cell sensitivity, and biomarkers of glycolysis in youth with obesity
Barbieri E, Bonet J, Fox D, Nelson R, Nelson M, Nelson L, Fernandez C, Van Name M, Samuels S, Caprio S, Sabati M, Galderisi A, Sherr J, Man C, Santoro N. Daily glucose variability is associated with intrahepatic fat content, β cell sensitivity, and biomarkers of glycolysis in youth with obesity. Obesity 2024, 33: 116-124. PMID: 39658509, PMCID: PMC11666407, DOI: 10.1002/oby.24175.Peer-Reviewed Original ResearchConceptsIntrahepatic fat contentDaily glucose variabilityLiver proton density fat fractionProton density fat fractionGlucose variabilityInsulin sensitivityOral glucose tolerance testFat fractionInsulin secretionAssociated with insulin resistanceFirst-phase insulin secretionAssociated with 2-h glucoseGlucose tolerance testGlucose standard deviationMagnetic resonance imagingOral minimal modelCoefficient of variationBasal insulin secretionPediatric obesityPostprandial glucoseTolerance testCell sensitivityInsulin resistanceObesityResonance imaging
2023
Incretin effect determines glucose trajectory and insulin sensitivity in youths with obesity
Galderisi A, Tricò D, Lat J, Samuels S, Weiss R, Van Name M, Pierpont B, Santoro N, Caprio S. Incretin effect determines glucose trajectory and insulin sensitivity in youths with obesity. JCI Insight 2023, 8: e165709. PMID: 37847560, PMCID: PMC10721315, DOI: 10.1172/jci.insight.165709.Peer-Reviewed Original ResearchConceptsOral glucose tolerance testΒ-cell functionIncretin effectBeta-cell functionInsulin sensitivityInsulin secretionGlucose levelsCell functionIsoglycemic intravenous glucose infusionGreater insulin sensitivityIntravenous glucose infusionPubertal transitionGlucose tolerance testGLP-17Glucagon suppressionGlucose infusionObesityLongitudinal increaseBaselineOGTTEffect groupGreater increaseLongitudinal trajectoriesSecretionGroupThe lncOb rs10487505 polymorphism impairs insulin sensitivity and glucose tolerance in children and adolescents with obesity
Umano G, Cirillo G, Sanchez G, Rondinelli G, Foderini M, Ferrara S, Di Sessa A, Marzuillo P, Papparella A, Santoro N, del Giudice E. The lncOb rs10487505 polymorphism impairs insulin sensitivity and glucose tolerance in children and adolescents with obesity. Obesity 2023, 31: 2359-2364. PMID: 37550829, DOI: 10.1002/oby.23835.Peer-Reviewed Original ResearchConceptsHomeostasis model assessmentInsulin resistanceDisposition indexLower whole-body insulin sensitivity indexModel assessmentWhole-body insulin sensitivity indexRisk of prediabetesHigher fasting insulinLower disposition indexPlasma leptin levelsInsulin sensitivity indexBMI z-scoreLeptin plasma levelsLeptin gene transcriptionFasting insulinGlucose toleranceLeptin levelsCC patientsRetrospective studyPlasma levelsAnthropometrical evaluationInsulin sensitivityHormone levelsHigh prevalenceHigh riskComparison of Metabolic Response to Colonic Fermentation in Lean Youth vs Youth With Obesity
Galuppo B, Umano G, Li Z, Van Name M, Samuels S, Kien C, Cline G, Wagner D, Barbieri E, Tricò D, Santoro N. Comparison of Metabolic Response to Colonic Fermentation in Lean Youth vs Youth With Obesity. JAMA Network Open 2023, 6: e2312530. PMID: 37159195, PMCID: PMC10170343, DOI: 10.1001/jamanetworkopen.2023.12530.Peer-Reviewed Original ResearchConceptsInsulin sensitivity indexCross-sectional studyFree fatty acidsColonic fermentationActive glucagon-like peptide-1Plasma free fatty acidsGlucagon-like peptide-1Indigestible dietary carbohydratesReduction of ghrelinActive GLP-1Health care burdenBody mass indexMetabolic responseInsulin-resistant groupLean youthObese insulinOIS groupPYY responseAnorexigenic responsePediatric obesityMass indexTyrosine tyrosineInsulin resistanceIntravenous infusionHormone secretion