![]() These data suggest the presence of an excitatory pulmonary chemosensitive sympathetic afferent reflex. This response was significantly greater when BK was applied to the ventral surface of the left lung compared to the dorsal surface. ![]() Application of bradykinin ( BK) to the visceral pleura of the lung produced an increase in mean arterial pressure ( MAP), heart rate ( HR), and RSNA. ![]() In this study, we evaluated changes in renal sympathetic nerve activity ( RSNA) and hemodynamics in response to activation of TRPV1‐sensitive pulmonary spinal sensory fibers by agonist application to the visceral pleura of the lung and by administration into the primary bronchus in anesthetized, bilaterally vagotomized, adult Sprague‐Dawley rats. We hypothesized that activation of sympathetic spinal afferent nerve fibers of the lung would result in an excitatory pressor reflex, similar to that previously characterized in the heart. Although the vagal afferent innervation of the lung has been well characterized, less is known about physiological effects mediated by spinal sympathetic afferent fibers. ![]() The sensory innervation of the lung is well known to be innervated by nerve fibers of both vagal and sympathetic origin. ![]()
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June 2023
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