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Full-Text Articles in Physiology
Hypercapnic Hyperoxia Increases Free Radical Production And Cellular Excitability In Rat Caudal Solitary Complex Brain Slice Neurons, Geoffrey Edward Ciarlone
Hypercapnic Hyperoxia Increases Free Radical Production And Cellular Excitability In Rat Caudal Solitary Complex Brain Slice Neurons, Geoffrey Edward Ciarlone
USF Tampa Graduate Theses and Dissertations
The caudal solitary complex (cSC) is a cardiorespiratory integrative center in the dorsal medulla oblongata that plays a vital role in the central CO2-chemoreceptive network. Neurons in this area respond to hypercapnic acidosis (HA) by a depolarization of the membrane potential and increase in firing rate, however a definitive mechanism for this response remains unknown. Likewise, CO2-chemoreceptive neurons in the cSC respond to hyperoxia in a similar fashion, but via a free radical mediated mechanism. It remains unknown if the response to increased pO2 is merely an increase in redox signaling, or if it’s the …
Cardiovascular Effects Evoked By Airway Nociceptive Reflexes In Healthy And Cardiovascular Diseased Rats, Justin Shane Hooper
Cardiovascular Effects Evoked By Airway Nociceptive Reflexes In Healthy And Cardiovascular Diseased Rats, Justin Shane Hooper
USF Tampa Graduate Theses and Dissertations
Acute inhalation of airborne pollutants alters cardiovascular function and has been shown to have its greatest affects on individuals with pre-existing cardiovascular disease. Evidence suggests that pollutant-induced activation of airway sensory nerves via the gating of ion channels is critical to these systemic responses. Here, we have investigated the cardiovascular responses evoked by inhalation of AITC (TRPA1 agonist) and capsaicin (TRPV1 agonist) in healthy Sprague Dawley (SD) and Wistar Kyoto (WKY) rats, and cardiovascular diseased Spontaneously Hypertensive (SH) rats. Inhalation of the agonists by healthy SD and WKY rats caused significant bradycardia, atrio-ventricular (AV) block and prolonged PR-Intervals. Inhalation of …