2021
Insulin sensitivity and pancreatic β-cell function in patients with primary aldosteronism
Grewal S, Fosam A, Chalk L, Deven A, Suzuki M, Correa R, Blau J, Demidowich A, Stratakis C, Muniyappa R. Insulin sensitivity and pancreatic β-cell function in patients with primary aldosteronism. Endocrine 2021, 72: 96-103. PMID: 33462741, PMCID: PMC8087621, DOI: 10.1007/s12020-020-02576-y.Peer-Reviewed Original ResearchMeSH KeywordsBlood GlucoseCross-Sectional StudiesGlucose Tolerance TestHumansHyperaldosteronismInsulinInsulin ResistanceInsulin-Secreting CellsConceptsΒ-cell functionHepatic insulin resistance indexOral glucose tolerance testPancreatic β-cell functionInsulin sensitivityInsulinogenic indexDisposition indexEffects of hyperaldosteronismCross-sectional study designInsulin resistance indexGlucose tolerance testOral disposition indexSimilar glucose toleranceBackgroundPrimary aldosteronismExcess aldosteronePA cohortArterial pressurePrimary aldosteronismGlucose toleranceControl subjectsTolerance testLess insulinResistance indexPA subjectsInsulin action
2020
Increased β-Cell Responsivity Independent of Insulin Sensitivity in Healthy African American Adults
Armiyaw L, Sarcone C, Fosam A, Muniyappa R. Increased β-Cell Responsivity Independent of Insulin Sensitivity in Healthy African American Adults. The Journal Of Clinical Endocrinology & Metabolism 2020, 105: dgaa234. PMID: 32382759, PMCID: PMC7266075, DOI: 10.1210/clinem/dgaa234.Peer-Reviewed Original ResearchConceptsNon-Hispanic whitesTotal β-cell responsivityΒ-cell responsivityPrimary insulin hypersecretionGlucose disposal rateInsulin sensitivityInsulin hypersecretionAfrican AmericansBasal insulin secretion rateGlucose responsivityIntravenous glucose tolerance testGlucose tolerance testHyperinsulinemic euglycemic glucose clamp techniqueC-peptide secretionGlucose clamp techniqueInsulin secretion rateNondiabetic African AmericansΒ-cell functionAfrican American adultsInsulin resistanceTolerance testNHW subjectsC-peptideInsulin secretionSignificant ethnic differencesReduced Insulin Clearance and Insulin-Degrading Enzyme Activity Contribute to Hyperinsulinemia in African Americans
Fosam A, Sikder S, Abel B, Tella S, Walter M, Mari A, Muniyappa R. Reduced Insulin Clearance and Insulin-Degrading Enzyme Activity Contribute to Hyperinsulinemia in African Americans. The Journal Of Clinical Endocrinology & Metabolism 2020, 105: dgaa070. PMID: 32052016, PMCID: PMC7059993, DOI: 10.1210/clinem/dgaa070.Peer-Reviewed Original Research