Original title: Effects of metabotropic 2/3-glutamate receptor agonism and antagonism on activity-based anorexia model in mice
The researchers studied female mice in a setup meant to model some features of anorexia. The mice could run on a wheel, but they had limited time to eat. The team tested two drugs that affect mGluR2/3, receptors that respond to glutamate, a brain chemical. Both drugs made the mice eat less and move more, leading to greater weight loss.
Imagine trying to keep a busy household from running out of food. Someone has only a short window to eat, while another chore keeps them moving. The harder it is to eat and the more time spent on that chore, the more weight the household loses. In this paper, the short meal window and running wheel create that strain for mice, and each tested drug makes them eat less and move more.
People with anorexia nervosa lack a medication that treats the disorder’s core symptoms. In female mice, both drugs tested reduced eating and increased activity, warning that altering these brain receptors could worsen features of the illness rather than help.
The results come from female mice in the activity-based anorexia model. The abstract does not establish that these drugs have the same effects in people with anorexia nervosa, or that they treat or worsen the full disorder in humans.
Ask anything about this paper. Answers come from its abstract, and say so when the abstract doesn't cover your question.
Effects of metabotropic 2/3-glutamate receptor agonism and antagonism on activity-based anorexia model in mice — Tuomas Varjelus, Atte Oksanen, Laura Kaljala et al. — Neuropharmacology — doi:10.1016/j.neuropharm.2026.111217
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.