Connection discovered between brain's opioid system and eating behavior

Researchers discover connection between brain’s opioid system and eating behaviour
Brain regions where connections between the opioid system and eating triggered by external stimuli were discovered. Yellow colour indicates a stronger connection. Credit: University of Turku

Brain regulation of feeding behavior traits has remained incompletely understood. In their latest study, researchers at the Turku PET Centre, Finland, discovered a connection between the function of the opioid system and food craving triggered by appetitive external stimuli.

Animal studies have established that the brain's and endocannabinoid systems are important in regulating eating behavior and mediate the food reward experience. For instance, alterations in these systems' signaling have been associated with obesity. In general, both internal signals of the body, such as fluctuation in blood sugar levels, and , such as food advertisements, can spark an appetite in humans.

In their new study, researchers at the University of Turku, Finland, investigated the connection between the brain's opioid and endocannabinoid signaling and different types of eating behavior. They discovered that the function of the opioid system is connected to eating triggered by external stimuli.

"The less binding sites there were for the opioids, the greater was the tendency to eat in response to external stimuli, such as seeing appetizing . Moreover, the number of binding sites for endocannabinoids was connected to several different types of eating behavior, describes first author," Doctoral Candidate Tatu Kantonen from the University of Turku.

According to Kantonen, the results indicate that especially the opioid system could be a potential target for anti-obesity drugs in humans.

The was obtained from the AIVO database hosted by the Turku PET Centre.


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More information: Tatu Kantonen et al, Cerebral μ-opioid and CB1 receptor systems have distinct roles in human feeding behavior, Translational Psychiatry (2021). DOI: 10.1038/s41398-021-01559-5
Journal information: Translational Psychiatry

Citation: Connection discovered between brain's opioid system and eating behavior (2021, September 2) retrieved 19 October 2021 from https://medicalxpress.com/news/2021-09-brain-opioid-behavior.html
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