2021
The response to prolonged fasting in hypothalamic serotonin transporter availability is blunted in obesity
van Galen KA, Booij J, Schrantee A, Adriaanse SM, Unmehopa UA, Fliers E, Schwartz GJ, DiLeone RJ, Horst K, la Fleur SE, Serlie MJ. The response to prolonged fasting in hypothalamic serotonin transporter availability is blunted in obesity. Metabolism 2021, 123: 154839. PMID: 34331964, PMCID: PMC8994212, DOI: 10.1016/j.metabol.2021.154839.Peer-Reviewed Original ResearchConceptsStriatal DAT availabilityLean menSERT availabilityDAT availabilityThalamic serotonin transportersSerotonin transporterDopaminergic systemTransporter availabilityStriatal dopamine transporter availabilityPeripheral metabolic signalsFree fatty acid concentrationsCross-over trialSerotonin transporter availabilityFasting-induced increaseDopamine transporter availabilitySystemic energy metabolismHypothalamus/thalamusLean subjectsPlasma insulinFatty acid concentrationsStriatal DATFood intakeObesityInter-individual variationHigh inter-individual variation
2018
Striatal dopamine regulates systemic glucose metabolism in humans and mice
Ter Horst KW, Lammers NM, Trinko R, Opland DM, Figee M, Ackermans MT, Booij J, van den Munckhof P, Schuurman PR, Fliers E, Denys D, DiLeone RJ, la Fleur SE, Serlie MJ. Striatal dopamine regulates systemic glucose metabolism in humans and mice. Science Translational Medicine 2018, 10 PMID: 29794060, DOI: 10.1126/scitranslmed.aar3752.Peer-Reviewed Original ResearchConceptsSystemic glucose metabolismDeep brain stimulationPeripheral insulin sensitivityGlucose metabolismInsulin sensitivityStriatal dopamineBilateral deep brain stimulationStriatal neuronal activityPeripheral glucose metabolismReceptor-expressing neuronsStriatal dopamine signalingObservational human studiesNondiabetic patientsInsulin requirementsDopamine depletionGlucose toleranceObsessive-compulsive disorderDiabetes patientsInternal capsuleStriatal areasDopamine releaseHealthy subjectsAnterior limbNucleus accumbensNeuronal activity
2016
The vitamin D metabolites 25(OH)D and 1,25(OH)2D are not related to either glucose metabolism or insulin action in obese women
Horst K, Versteeg RI, Gilijamse PW, Ackermans MT, Heijboer AC, Romijn JA, la Fleur SE, Trinko R, DiLeone RJ, Serlie MJ. The vitamin D metabolites 25(OH)D and 1,25(OH)2D are not related to either glucose metabolism or insulin action in obese women. Diabetes & Metabolism 2016, 42: 416-423. PMID: 27262368, DOI: 10.1016/j.diabet.2016.04.011.Peer-Reviewed Original ResearchConceptsVitamin D deficiencyObese womenInsulin actionD deficiencyVitamin DInsulin resistanceInsulin sensitivityGlucose metabolismEuglycaemic–hyperinsulinaemic clamp studiesActive vitamin D metaboliteBasal endogenous glucose productionObesity-related insulin resistanceTissue-specific insulin actionObesity-induced metabolic diseasesTissue-specific insulin sensitivitySkeletal muscle insulin sensitivityBody mass indexVitamin D metabolitesTotal body fatMuscle insulin sensitivityEndogenous glucose productionBaseline characteristicsSerum levelsMass indexD levels