Effects of a selective long-acting amylin receptor agonist on alcohol consumption, food intake and body weight in male and female rats.

Abstract

Alcohol use disorder is a complex neuropsychiatric disorder affecting both males and females worldwide; however, the efficacy of current pharmacotherapies varies. Recent advances show that gut-brain peptides, like amylin, regulate alcohol behavioural responses by acting on brain areas involved in alcohol reward processes. Thus, the activation of amylin receptors (AMYRs) by salmon calcitonin (sCT) decreases alcohol behaviours in male rodents. Given that sCT also activates the sole calcitonin receptor (CTR), studies of more selective AMYR agonists in both male and female rodents are needed to explore amylinergic modulation of alcohol behaviours. Therefore, we investigated the effects of repeated administration of a selective long-acting AMYR agonist, NNC0174-1213 (AM1213), on alcohol, water and food intake, as well as body weight in male and female rats chronically exposed to alcohol. We confirm our previous studies with sCT in male rats, as repeated AM1213 administration for 2 weeks initially decreased alcohol intake in both male and female rats. However, this reduction ceases in both sexes on later sessions, accompanied by an increase in males. AM1213 reduced food intake and body weight in both male and female rats, with sustained body weight loss in males after discontinuation of the treatment. Moreover, AM1213 administration for 3 or 7 days, differentially altered dopamine, serotonin and their metabolites in the reward-related areas in males and females, providing tentative, but different, downstream mechanism through which selective activation of AMYR may alter alcohol intake. Our data provide clarified insight into the importance of AMYRs for alcohol intake regulation in both sexes.

• Authors: Aimilia Lydia Kalafateli, Jesper Vestlund, Kirsten Raun, Emil Egecioglu, Elisabet Jerlhag
• Journal: Addiction biology (Addict Biol) Vol. 26 Issue 2 Pg. e12910 (03 2021) ISSN: 1369-1600 [Electronic] United States
• PMID: 32383257 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: © 2020 The Authors. Addiction Biology published by John Wiley & Sons Ltd on behalf of Society for the Study of Addiction.

Chemical References

• Amylin Receptor Agonists
• Water
• salmon calcitonin
• Calcitonin

Topics

• Alcohol Drinking (drug therapy)
• Alcoholism (drug therapy)
• Amylin Receptor Agonists (pharmacology)
• Animals
• Body Weight (drug effects)
• Calcitonin (pharmacology)
• Eating (drug effects)
• Female
• Male
• Rats
• Rats, Wistar
• Reward
• Water