Anxiety disorders affect nearly 360 million people worldwide, making them the most common mental health condition. Recent research conducted by scientists from the Spanish National Research Council and Miguel Hernández University has identified a specific group of neurons in the amygdala that play a crucial role in triggering anxiety behaviors, according to a report in the newspaper ” “.
The study focuses on a gene called “GRIK4,” responsible for regulating the production of a protein called “GluK4.” When this gene is increased, mice exhibit excessive anxiety-like behaviors, including avoiding open spaces and disrupted social interactions. By using gene editing, researchers reduced this gene, leading to decreased levels of “GluK4” in neurons, which in turn “rebalanced” the amygdala’s neural circuits. This intervention reversed the effects of anxiety, depression, and social deficits in mice, restoring normal behaviors.
This result highlights the key role of the amygdala in anxiety and fear, and the potential to develop treatments targeting specific neural groups. Furthermore, similar results were observed in non-genetically modified mice suffering from severe anxiety, emphasizing the potential for this approach to be applied widely.
Although the precise processes have yet to be confirmed in humans, these mouse models offer promising insights for the development of future treatments that could alleviate human anxiety by locally modifying specific brain circuits.
