0000000000543133

AUTHOR

Brigitte Hampel

showing 2 related works from this author

Acute selective ablation of rat insulin promoter-expressing (RIP HER ) neurons defines their orexigenic nature

2012

Rat insulin promoter (RIP)-expressing neurons in the hypothalamus control body weight and energy homeostasis. However, genetic approaches to study the role of these neurons have been limited by the fact that RIP expression is predominantly found in pancreatic β-cells, which impedes selective targeting of neurons. To define the function of hypothalamic RIP-expressing neurons, we set out to acutely and selectively eliminate them via diphtheria toxin-mediated ablation. Therefore, the diphtheria toxin receptor transgene was specifically expressed upon RIP-specific Cre recombination using a RIP-Cre line first described by Herrera (RIP HER -Cre) [Herrera PL (2000) Development 127:2317–2322]. Usi…

endocrine systemmedicine.medical_specialtyPituitary glandBiologyReal-Time Polymerase Chain ReactionEnergy homeostasisMiceArcuate nucleusOrexigenicInternal medicineWeight LossmedicineAnimalsInsulinPromoter Regions GeneticDorsomedial hypothalamic nucleusNeuronsDiphtheria toxinMultidisciplinarydigestive oral and skin physiologyArcuate Nucleus of HypothalamusFeeding BehaviorBiological SciencesGlucose Tolerance TestRatsEndocrinologymedicine.anatomical_structurenervous systemHypothalamusNucleushormones hormone substitutes and hormone antagonistsParaventricular Hypothalamic Nucleusmedicine.drugProceedings of the National Academy of Sciences
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Agouti-related peptide-expressing neurons are mandatory for feeding.

2005

Multiple hormones controlling energy homeostasis regulate the expression of neuropeptide Y (NPY) and agouti-related peptide (AgRP) in the arcuate nucleus of the hypothalamus. Nevertheless, inactivation of the genes encoding NPY and/or AgRP has no impact on food intake in mice. Here we demonstrate that induced selective ablation of AgRP-expressing neurons in adult mice results in acute reduction of feeding, demonstrating direct evidence for a critical role of these neurons in the regulation of energy homeostasis.

medicine.medical_specialtyPro-OpiomelanocortinTime FactorsPeptideCell CountBiologyEnergy homeostasisEatingMiceArcuate nucleusInternal medicinemedicineAnimalsAgouti-Related ProteinDiphtheria ToxinNeuropeptide YRegulation of gene expressionchemistry.chemical_classificationMice KnockoutNeuronsGeneral Neurosciencedigestive oral and skin physiologyBody WeightArcuate Nucleus of HypothalamusProteinsFeeding BehaviorNeuropeptide Y receptorbeta-GalactosidaseAnorexiaEndocrinologynervous systemchemistryGene Expression RegulationHypothalamusIntercellular Signaling Peptides and ProteinsAgouti-related peptidehormones hormone substitutes and hormone antagonistsHormoneNature neuroscience
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