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Investigation of nesfatin-1 as a peptide product of the gastric X/A-like cell on anxiety behavior in animals and humans.

Subject Area Endocrinology, Diabetology, Metabolism
Nutritional Sciences
Gastroenterology
Term from 2012 to 2017
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 216245554
 
Final Report Year 2023

Final Report Abstract

The present studies give novel insight into the occurrence and function of two novel gastrointestinal peptide hormones, NUCB2/nesfatin-1 and phoenixin, in animal models and in human. Firstly, NUCB2/nesfatin-1 was shown to be increased in the blood of rats due to immobilization stress and able to affect (increase) anxiety in normal-weight rats. Moreover, also in human subjects nesfatin-1 in the blood was elevated due to acute stress in normal-weight females, while in obese women this was not the case. Additionally, in women with obesity that suffered from high anxiety NUCB2/nesfatin-1 in the blood was higher than in obese women with low anxiety. Furthermore, phoenixin-14 was demonstrated to increase food intake in rats by reducing satiety. It was also shown that this peptide activates various regions in the brain, among others brain areas where NUCB2/nesfatin-1 has been detected. Finally, brain regions where phoenixin-14 is detected are activated by different stressors and immobilization or inflammation stress increased phoenixin expression. NUCB2/nesfatin-1 and phoenixin both play a role in stress and anxiety regulation and thus might represent therapeutic targets in the treatment of stress-related diseases and anxiety disorders; this should be further followed up in a translational approach.

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