The FDA's Center for Devices and Radiological Health approved the firm's submission after a thorough review of the clinical trial data from the
Baroreflex Activation Therapy for Heart Failure (BeAT-HF) Pivotal Trial.
By modulating the brain RAS, Firibastat decreases vasopressin release, decreases sympathetic nerve activity and improves
baroreflex. These effects lead to a vasodilatation and an increased diuresis, thereby decreasing blood pressure.
An additional system -- called the
baroreflex -- helps correct if blood pressure gets too high, he added.
(10.) Nakajima Y, Mizobe T, Takamata A, Tanaka Y
Baroreflex modulation of peripheral vasoconstriction during progressive hypothermia in anesthetized humans.
An example of a physiological mechanism for cardiovascular control is the
baroreflex (7).
The feedback of blood pressure is mediated through the
baroreflex, which transmits baroreceptor signals to the solitary nucleus and from there to the caudal ventrolateral medulla (CVLM) region and nucleus ambiguus.
This finding is supported by another study which concludes that gender differences are there in arterial
baroreflex sensitivity and they observed that females may have a greater
baroreflex sensitivity, in such a way that alterations in BP are more efficiently controlled compared to males.
Decreased angiotensin III means less release of vasopressin, reduced sympathetic nervous system activity, and increased
baroreflex activity, all of which add up to lower blood pressure, Keith C.
In addition, Mg deficiency induced excessive catecholamine release and high sympathetic tone, which impaired
baroreflex control of sympathetic nerves and reduced baroreflex-related oscillation, leading to a blunted
baroreflex and enhanced heart rate response to stress (13).
LF-HF ratio that represents sympatho-vagal balance related to arterial
baroreflex activity and cardiovascular stresses was also shown to be significantly elevated.
Later on, in 2009, the Caminiti (18) study found that long-acting testosterone therapies (undecanoate) had a plethora of positive outcomes in men with moderately severe CHF, including improved exercise capacity, muscle strength, glucose metabolism, and
baroreflex sensitivity (BRS).
Also, another mechanism involved in hemodynamic improvement is
baroreflex regulation, which after regular practice of physical exercise has its sensitivity increased due to a significant increase in the sensitivity of the aortic depressor nerve (28).
