Researchers have identified a new potential factor in the development of high blood pressure and propose a novel approach to treat it. This breakthrough could pave the way for more effective treatments against this widespread chronic disease.
TL;DR – A brain-high blood pressure link discovered in the pFL region. – Deactivating this area lowers blood pressure in rats. – A promising therapeutic approach through the carotid bodies.
A new perspective on hypertension: the unexpected role of the brain Researchers from the universities of São Paulo and Auckland have uncovered a previously unknown brain mechanism that could influence certain cases of high blood pressure. According to their recent publication, it is specifically the parafacial lateral region (pFL) of the brain that may play a crucial role in this phenomenon.
When breathing and blood pressure intertwine The pFL area, traditionally associated with regulating respiration – think voluntary exhalations during physical exertion or a fit of laughter – also seems to have a direct impact on the constriction of blood vessels. By activating these neurons in rats, scientists observed not only a change in respiratory nerve activity but also an increase in blood pressure, accompanied by heightened sympathetic activity. The team highlights that this interaction between breath control and vascular signaling could explain why nearly 40% of individuals treated for high blood pressure remain therapeutically unsuccessful.
Innovative therapeutic avenues: towards a new target? Another major discovery: by deactivating the pFL region in hypertensive rats, researchers were able to bring their blood pressure back to a normal level. This progress opens the door to a targeted strategy for treating certain patients. Instead of directly intervening in the brain – a complex operation – researchers are considering acting on the carotid bodies, small sensors located in the neck capable of remotely influencing pFL neurons. An existing drug is being repurposed to attempt to inhibit these sensors, with the hope that it indirectly triggers this brain region.
Limits and perspectives: caution above all Nevertheless, it is important to note that all these experiments were conducted only on animals. While it is likely that similar mechanisms exist in humans – as suggested by links between sleep apnea and hypertension – nothing is yet confirmed. The scientific community now eagerly awaits clinical trials to confirm if this brain circuit can truly become a new therapeutic target against a condition that affects approximately one-third of the global population. The coming months are expected to be crucial in turning these promising results into tangible hopes for patients.
