2024
Altered extracellular matrix dynamics is associated with insulin resistance in adolescent children with obesity
Slusher A, Nouws J, Tokoglu F, Vash‐Margita A, Matthews M, Fitch M, Shankaran M, Hellerstein M, Caprio S. Altered extracellular matrix dynamics is associated with insulin resistance in adolescent children with obesity. Obesity 2024, 32: 593-602. PMID: 38410080, PMCID: PMC11034857, DOI: 10.1002/oby.23974.Peer-Reviewed Original ResearchConceptsSubcutaneous adipose tissueLiver fat contentInsulin resistanceInsulin sensitivityEctopic storage of lipidOral glucose tolerance testGluteal subcutaneous adipose tissueExtracellular matrix dynamicsMagnetic resonance imaging scansAdipose tissueBody fat distribution patternsFibrogenesis in vivoAdipocyte turnoverAssociated with insulin resistanceGlucose tolerance testFat distribution patternsWhole-body IRAdipose tissue insulin signalingTissue insulin signalingTolerance testGluteal fatImaging scansPathophysiological pathwaysAssociated with ratioObesity
2023
Alterations in Adipose Tissue Distribution, Cell Morphology, and Function Mark Primary Insulin Hypersecretion in Youth With Obesity
Tricò D, Chiriacò M, Nouws J, Vash-Margita A, Kursawe R, Tarabra E, Galderisi A, Natali A, Giannini C, Hellerstein M, Ferrannini E, Caprio S. Alterations in Adipose Tissue Distribution, Cell Morphology, and Function Mark Primary Insulin Hypersecretion in Youth With Obesity. Diabetes 2023, 73: 941-952. PMID: 37870826, PMCID: PMC11109779, DOI: 10.2337/db23-0450.Peer-Reviewed Original ResearchPrimary insulin hypersecretionΒ-cell glucose sensitivityAdipose tissue distributionInsulin hypersecretionInsulin resistanceGlucose toleranceUnfavorable metabolic phenotypeWorse glucose toleranceLeptin serum levelsAbnormal glucose toleranceTissue distributionExcessive insulin secretionHigher leptin levelsVisceral fat depotsNon-diabetic adolescentsEuglycemic hyperinsulinemic clampWhole-body adiposityAbdominal subcutaneous adipocytesBody weight gainGlucose sensitivityPrimary hypersecretionGlucose intoleranceSerum levelsLeptin levelsChronic hyperinsulinemia
2018
Ethnicity and Common Genetic Variants Modulate Nonalcoholic Fatty Liver Disease (NAFLD) Metabolic Phenotype in Obese Youth
TRICO D, CAPRIO S, UMANO G, GALDERISI A, MATA M, NOUWS J, PIERPONT B, KIM G, SANTORO N. Ethnicity and Common Genetic Variants Modulate Nonalcoholic Fatty Liver Disease (NAFLD) Metabolic Phenotype in Obese Youth. Diabetes 2018, 67 DOI: 10.2337/db18-313-or.Peer-Reviewed Original ResearchNonalcoholic fatty liver diseasePediatric nonalcoholic fatty liver diseaseType 2 diabetesInsulin resistanceObese adolescentsInsulin sensitivityPrevalence of NAFLDHigher C-peptide levelsOral glucose tolerance testAfrican AmericansC-peptide levelsHigh fasting glucoseFatty liver diseaseGlucose tolerance testLower insulin sensitivityMajor risk factorZ-score BMIHepatic fat contentStrongest predictorCommon gene variantsFasting GlucoseNAFLD developmentGlucose toleranceLiver diseaseTolerance test
2015
A Role of the Inflammasome in the Low Storage Capacity of the Abdominal Subcutaneous Adipose Tissue in Obese Adolescents
Kursawe R, Dixit VD, Scherer PE, Santoro N, Narayan D, Gordillo R, Giannini C, Lopez X, Pierpont B, Nouws J, Shulman GI, Caprio S. A Role of the Inflammasome in the Low Storage Capacity of the Abdominal Subcutaneous Adipose Tissue in Obese Adolescents. Diabetes 2015, 65: 610-618. PMID: 26718495, PMCID: PMC4764142, DOI: 10.2337/db15-1478.Peer-Reviewed Original ResearchMeSH KeywordsAbdomenAcetyl-CoA CarboxylaseAdipogenesisAdiponectinAdolescentCarrier ProteinsCaspase 1ChildDown-RegulationFatty Acid Synthase, Type IFemaleGene Expression ProfilingGlucose Transporter Type 4HumansInflammasomesInsulin ResistanceInterleukin-1betaIntra-Abdominal FatLeptinLipogenesisLipoprotein LipaseMacrophagesMagnetic Resonance ImagingMaleNLR Family, Pyrin Domain-Containing 3 ProteinObesityPPAR gammaSirtuin 1Sterol Regulatory Element Binding Protein 1Subcutaneous FatToll-Like Receptor 4ConceptsVisceral adipose tissueObese adolescentsInsulin resistanceTissue inflammationNLRP3 inflammasomeAdipose tissueInnate immune cell sensorsAbdominal subcutaneous adipose tissueAbdominal adipose depotsAbdominal fat partitioningAdipogenesis/lipogenesisAdipose tissue inflammationProinflammatory cytokines interleukinInfiltration of macrophagesExpression of CASP1Subcutaneous adipose tissueInflammation markersSAT biopsiesIL-18Macrophage infiltrationVisceral fatCytokines interleukinSAT ratioInsulin sensitivityAdipose depots