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Role of midbrain in the control of breathing in anuran amphibians
(Amer Physiological Soc, 2007-07-01)
The present study was designed to explore systematically the midbrain of unanesthetized, decerebrate anuran amphibians (bullfrogs), using chemical and electrical stimulation and midbrain transections to identify sites ...
Contribution of retrotrapezoid/parafacial respiratory region to the expiratory-sympathetic coupling in response to peripheral chemoreflex in rats
(2012)
Central mechanisms of coupling between respiratory and sympathetic systems are essential for the entrainment between the enhanced respiratory drive and sympathoexcitation in response to hypoxia. However, the brainstem ...
Short-term sustained hypoxia induces changes in the coupling of sympathetic and respiratory activities in rats
(2014)
Individuals experiencing sustained hypoxia (SH) exhibit adjustments in the respiratory and autonomic functions by neural mechanisms not yet elucidated. In the present study we evaluated the central mechanisms underpinning ...
Contribution of the retrotrapezoid nucleus/parafacial respiratory region to the expiratory-sympathetic coupling in response to peripheral chemoreflex in rats
(AMER PHYSIOLOGICAL SOCBETHESDA, 2012)
Moraes DJ, Dias MB, Cavalcanti-Kwiatkoski R, Machado BH, Zoccal DB. Contribution of retrotrapezoid nucleus/parafacial respiratory region to the expiratory-sympathetic coupling in response to peripheral chemoreflex in rats. ...
Cardiovascular and respiratory responses to microinjection of L-glutamate into the caudal pressor area in conscious and anesthetized rats
(Associação Brasileira de Divulgação Científica, 2001-12-01)
The role of the caudal pressor area (CPA) in the maintenance of vasomotor tonus in anesthetized and decerebrate animals has been clearly established. In conscious animals, however, the participation of CPA in the cardiovascular ...
A FALL in ARTERIAL BLOOD-PRESSURE PRODUCED BY INHIBITION of the CAUDALMOST VENTROLATERAL MEDULLA - the CAUDAL PRESSER AREA
(Elsevier B.V., 1994-11-01)
The caudal edge of the ventrolateral medulla was mapped to localize sites where microinjections of L-glutamate (L-glu) produce presser responses in paralyzed and artificially ventilated urethane-anesthetized rats. Presser ...
Postnatal intermittent hypoxia enhances phrenic and reduces vagal upper airway motor activities in rats by epigenetic mechanisms
(2020-01-01)
New Findings: What is the central question of this study? What are the alterations in respiratory motor activity that may underlie ventilatory dysfunctions in juvenile and adult animals exposed to postnatal chronic ...
Interaction between the retrotrapezoid nucleus and the parafacial respiratory group to regulate active expiration and sympathetic activity in rats
(Amer Physiological Soc, 2018-11-01)
The retrotrapezoid nucleus (RTN) contains chemosensitive cells that distribute CO2-dependent excitatory drive to the respiratory network. This drive facilitates the function of the respiratory central pattern generator ...
Inhibitory control of active expiration by the Bötzinger complex in rats
(2020-01-01)
Key points: Contraction of abdominal muscles at the end of expiration during metabolic challenges (such as hypercapnia and hypoxia) improves pulmonary ventilation. The emergence of this active expiratory pattern requires ...
The Kolliker-Fuse nucleus orchestrates the timing of expiratory abdominal nerve bursting
(Amer Physiological Soc, 2018-02-01)
Coordination of respiratory pump and valve muscle activity is essential for normal breathing. A hallmark respiratory response to hypercapnia and hypoxia is the emergence of active exhalation, characterized by abdominal ...