They discover how the brain protects itself against depression

a team international of scientistsled by researchers from Malaga Biomedical Research Institute and Nanomedicine Platform (Ibima Bionand Platform) and the Faculty of Medicine of the University of Malaga (UMA)has published a find to understand how the brain protects itself facing imbalances that could lead to mood disorders like the depression.

The research, which has the participation of Karolinska Institute of Sweden, focuses on the hippocampusa brain region critical for learningthe memory and the regulation of emotions. In this area, cells communicate through receivers who, instead of working alone, form teams or alliances called heteroreceptor complexesas explained in a statement.

According to Europa Press, the study has been coordinated by the Professor Manuel Narváezfrom the area of UMA Physiologyco-investigator responsible for the group of Receptomics and Signaling Networks in Brain Diseases by Ibima; next to Dasiel Borrotoresearcher responsible for the same group; and Pedro Serranohead of Neurology at the Regional Hospital of Malaga and responsible for the group Neuroimmunology and Neuroinflammation of Ibima. Together with the researcher Isabel Morenoappears as first signatory of work; all scientists from the UMA Faculty of Medicine.

Brain protection mechanisms

To understand the importance of these alliances, the scientists used a advanced technology —named siRNA— to temporarily “turn off” the NPY1R receptora key piece that normally joins with other receptors to promote mental health and the creation of new neurons.

The researchers observed that, by reducing the presence of NPY1Rthe molecular alliances They were effectively falling apart. However, the result was not what was expected: despite this break, the brain of the study subjects did not stop producing new neurons nor did he show signs of depressive behavior during the observed time.

“Our findings confirm that the integrity of these receptors is vital to form the complexes, but they also reveal a robust compensatory capacity of the brain machinery in the hippocampus,” the authors explain in the sources consulted.

Thus, they point out that the brain seems to have a “booking” either security mechanisms that maintain stable levels of protective factors, such as BDNF protein —”essential for neuronal survival”—allowing the system to continue functioning even when an important piece of gear weakens.

This discovery has direct implications in the search for treatments for Major Depressive Disorder. By understanding that the brain has these resilience barriersscientists can design smarter drugs that not only replace what is missing, but enhance molecular alliances in a more lasting and specific way.

The work highlights the importance of international collaboration among elite institutions such as the UMAhe Malaga Regional Hospital, IBIMA and the Karolinska Instituteuniting basic research with clinical practice to offer real solutions to the problems of mental health that affect millions of people.