The central nervous norepinephrine network links a diminished sense of 
emotional well-being to an increased body weight

Melasch, J.; Rullmann, M.; Hilbert, A.; Luthardt, J.; Becker, G. A.; Patt, M.; Villringer, Arno; Arélin, Katrin; Meyer, P. M.; Lobsien, D.; Ding, Y.-S.; Mueller, Karsten; Sabri, O.; Hesse, S.; Pleger, Burkhard

doi:10.1038/ijo.2015.216

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The central nervous norepinephrine network links a diminished sense of emotional well-being to an increased body weight

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

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Arélin, Katrin
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Clinic for Cognitive Neurology, University of Leipzig, Germany;

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Mueller, Karsten
Methods and Development Unit Nuclear Magnetic Resonance, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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

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Citation

Melasch, J., Rullmann, M., Hilbert, A., Luthardt, J., Becker, G. A., Patt, M., et al. (2016). The central nervous norepinephrine network links a diminished sense of emotional well-being to an increased body weight. International Journal of Obesity, 40(5), 779-787. doi:10.1038/ijo.2015.216.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-28C0-B

Abstract

Objectives:

The neurobiological mechanisms linking obesity to emotional distress remain largely undiscovered.
Methods:

In this pilot study, we combined positron emission tomography, using the norepinephrine transporter (NET) tracer [11C]-O-methylreboxetine, with functional connectivity magnetic resonance imaging, the Beck depression inventory (BDI), and the impact of weight on quality of life–Lite questionnaire (IWQOL–Lite), to investigate the role of norepinephrine in the severity of depression (BDI), as well as in the loss of emotional well-being with body weight (IWQOL–Lite).
Results:

In a small group of lean-to-morbidly obese individuals (n=20), we show that an increased body mass index (BMI) is related to a lowered NET availability within the hypothalamus, known as the brain’s homeostatic control site. The hypothalamus displayed a strengthened connectivity in relation to the individual hypothalamic NET availability to the anterior insula/frontal operculum, as well as the medial orbitofrontal cortex, assumed to host the primary and secondary gustatory cortex, respectively (n=19). The resting-state activity in these two regions was correlated positively to the BMI and IWQOL–Lite scores, but not to the BDI, suggesting that the higher the resting-state activity in these regions, and hence the higher the BMI, the stronger the negative impact of the body weight on the individual’s emotional well-being was.
Conclusions:

This pilot study suggests that the loss in emotional well-being with weight is embedded within the central norepinephrine network.