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Lost in translation?: On the need for convergence in animal and human studies on the role of dopamine in diet-induced obesity

MPG-Autoren
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Janssen,  Lieneke
Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Germany;
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Herzog,  Nadine
Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Germany;
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Waltmann,  Maria
Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Germany;
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Breuer,  Nora
Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Germany;
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Wiencke,  Kathleen
Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Germany;
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Rausch,  Franziska
Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Germany;
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Collaborative Research Center Obesity Mechanisms, Institute of Biochemistry, University of Leipzig, Germany;

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Hartmann,  Hendrik
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Collaborative Research Center Obesity Mechanisms, Institute of Biochemistry, University of Leipzig, Germany;

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Poessel,  Maria
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Horstmann,  Annette
Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Germany;
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Collaborative Research Center Obesity Mechanisms, Institute of Biochemistry, University of Leipzig, Germany;
Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Finland;

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Janssen_Herzog_2019.pdf
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Zitation

Janssen, L., Herzog, N., Waltmann, M., Breuer, N., Wiencke, K., Rausch, F., et al. (2019). Lost in translation?: On the need for convergence in animal and human studies on the role of dopamine in diet-induced obesity. Current Addiction Reports, 6(3), 229-257. doi:10.1007/s40429-019-00268-w.


Zitierlink: https://hdl.handle.net/21.11116/0000-0004-B9DA-6
Zusammenfassung
Purpose of Review

Animal and human studies suggest that diet-induced obesity and plasticity in the central dopaminergic system are linked. However, it is unclear whether observed changes depend on diet or obesity, and whether they are specific to brain regions and cognitive functions. Here, we focus on neural and cognitive changes in frontostriatal circuits.
Recent Findings

Both diet and obesity affect dopaminergic transmission. However, site and direction of effects are inconsistent across species and studies. Non-specific changes are observed spanning all frontostriatal loops, from sensory input to motivated behaviour. Given the impact of peripheral signals on central dopaminergic signalling and the interaction between the frontostriatal loops, modulation of dopamine likely propagates through all loops and, thus, affects behaviour on various levels of complexity.
Summary

To improve convergence between animal and human studies on diet-induced obesity, animal studies should include sophisticated cognitive measures and diets resembling human obesogenic diets, and human studies should adopt diet interventions and longitudinal designs.