GLP-1 and hunger modulate incentive motivation depending on insulin sensitivity in humans

Autor: Ruth Hanssen, Alina Chloé Kretschmer, Lionel Rigoux, Kerstin Albus, Sharmili Edwin Thanarajah, Tamara Sitnikow, Corina Melzer, Oliver A. Cornely, Jens C. Brüning, Marc Tittgemeyer
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Molecular Metabolism, Vol 45, Iss , Pp 101163- (2021)
Druh dokumentu: article
ISSN: 2212-8778
DOI: 10.1016/j.molmet.2021.101163
Popis: Objective: To regulate food intake, our brain constantly integrates external cues, such as the incentive value of a potential food reward, with internal state signals, such as hunger feelings. Incentive motivation refers to the processes that translate an expected reward into the effort spent to obtain the reward; the magnitude and probability of a reward involved in prompting motivated behaviour are encoded by the dopaminergic (DA) midbrain and its mesoaccumbens DA projections. This type of reward circuity is particularly sensitive to the metabolic state signalled by peripheral mediators, such as insulin or glucagon-like peptide 1 (GLP-1). While in rodents the modulatory effect of metabolic state signals on motivated behaviour is well documented, evidence of state-dependent modulation and the role of incentive motivation underlying overeating in humans is lacking. Methods: In a randomised, placebo-controlled, crossover design, 21 lean (body mass index [BMI]
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