Brain link to high blood pressure may explain some cases

An animal study reported that a specific group of brainstem neurons called pFL neurons influenced blood pressure in rats, and experts link this pathway to breathing disruptions and stress; researchers say the finding could point to new ways of understanding hard-to-control hypertension.

Researchers reported an animal study that examined neurons in the brainstem and found a connection between neuron activity and blood pressure. The study identified pFL neurons (prefrontal limbic circuit neurons) as influencing breathing patterns and the nervous system in ways that affected blood vessel tone. Clinicians quoted in the article noted that this pathway relates to known triggers such as breathing disruptions and chronic stress. The researchers and experts describe the finding as a possible step toward new approaches for cases of high blood pressure that are difficult to control. Key findings: - An animal study published in Circulation Research observed that increased activity of pFL neurons was associated with higher blood pressure in rats. - Reducing activity of those neurons in the study corresponded with lower blood pressure readings. - The study linked pFL neuron activity to breathing disturbances and nervous system responses similar to patterns seen in sleep apnea. - Clinicians in the article said chronic stress, sleep deprivation, and sustained overstimulation are among factors that can overactivate these neurons. - The researchers and commentators framed the result as a potential target for future research, not an established treatment. Summary: The report highlights a brainstem pathway that researchers found can affect blood pressure in an animal model, and experts connect this mechanism to breathing disruptions and stress-related triggers. Undetermined at this time.