Results 51 to 60 of about 23,312 (152)

Baroreflex mechanisms in major depression. [PDF]

, 2007
BACKGROUND: Recent studies have shown that depressive disorder is associated with impaired baroreceptor or baroreflex sensitivity, which is proposed to be a predisposing factor for sudden death in patients with manifest cardiac disease.
Davydov, Dmitry M, Cook, Ian A, Goldstein, Iris, Shapiro, David   +3 more
core  

Brain AT1 and AT2 receptors and nitric oxide in baroreflex regulation of renal sympathetic activity in unanaesthetised rats

Scientific Reports
This study investigated the role of brain AT1 and AT2 receptors and the nitric oxide (NO) system in modulating renal sympathetic nerve activity (RSNA) baroreflex in unanaesthetised rats.
Mohammed H. Abdulla, Edward J. Johns
doaj   +1 more source

Baroreflex function in conscious rats submitted to iron overload

Brazilian Journal of Medical and Biological Research, 2005
Our hypothesis is that iron accumulated in tissue, rather than in serum, may compromise cardiovascular control. Male Fischer 344 rats weighing 180 to 220 g were divided into 2 groups.
L.M. Cardoso, M.L. Pedrosa, M.E. Silva, M.F.D. Moraes, E. Colombari, D.A. Chianca-Jr.   +5 more
doaj   +1 more source

Phase Coupling Between Baroreflex Oscillations of Blood Pressure and Heart Rate Changes in 21-Day Dry Immersion

Frontiers in Physiology, 2020
IntroductionDry immersion (DI) is a ground-based experimental model which reproduces the effects of microgravity on the cardiovascular system and, therefore, can be used to study the mechanisms of post-flight orthostatic intolerance in cosmonauts ...
Anatoly S. Borovik, Evgeniya A. Orlova, Elena S. Tomilovskaya, Olga S. Tarasova, Olga S. Tarasova, Olga L. Vinogradova, Olga L. Vinogradova   +6 more
doaj   +1 more source

Effect of Aging on Muscle-Pump Baroreflex of Individual Leg Muscles During Standing

Frontiers in Physiology, 2019
Activation of leg muscles is an important component in the regulation of blood pressure during standing, failure of which could result in syncope and falls.
Ajay K. Verma, Da Xu, Amanmeet Garg, Andrew P. Blaber, Andrew P. Blaber, Kouhyar Tavakolian, Kouhyar Tavakolian   +6 more
doaj   +1 more source

Carotid baroreflex responsiveness in heat-stressed humans

, 2000
The effects of whole body heating on human baroreflex function are relatively unknown. The purpose of this project was to identify whether whole body heating reduces the maximal slope of the carotid baroreflex.
C. G. Crandall
core   +1 more source

Baroreflex control of muscle sympathetic nerve activity after 120 days of 6°head-down bed rest [PDF]

, 2020
of muscle sympathetic nerve activity after 120 days of 6°head-down bed rest. Am. J. Physiol. Regulatory Integrative Comp. Physiol. 278: R445-R452, 2000.-To examine how long-lasting microgravity simulated by 6°head-down bed rest (HDBR) induces changes in ...
Irina B Vinogradova, Irina B Kharchenko, Kharchenko, Satoshi Atsunori, Tadaaki Kitazawa, Hiroki Iwase, Atsunori Kamiya, Satoshi Iwase, Tadaaki Mano, Baroreflex, Olga L Vinogradova, Hiroki Kitazawa, Olga L Mano, Kamiya   +13 more
core  

Novel Approach to Elucidate Human Baroreflex Regulation at the Brainstem Level: Pharmacological Testing During fMRI

Frontiers in Neuroscience, 2019
Introduction: Brainstem nuclei govern the arterial baroreflex, which is crucial for heart rate and blood pressure control. Yet, brainstem function is difficult to explore in living humans and is therefore mostly studied using animal models or postmortem ...
Darius A. Gerlach, Jorge Manuel, Alex Hoff, Hendrik Kronsbein, Hendrik Kronsbein, Fabian Hoffmann, Fabian Hoffmann, Karsten Heusser, Heimo Ehmke, André Diedrich, Jens Jordan, Jens Tank, Florian Beissner   +12 more
doaj   +1 more source

Age and sex differences in blood pressure regulation: A focus on the vascular baroreflex limb

Physiological Reports
Despite the vasculature's role in long‐term blood pressure (BP) regulation, limited work exists on vascular baroreflex function. This study focused on hypothesized age and sex differences in the vascular‐sympathetic baroreflex limb and explored the role ...
Darcianne K. Watanabe, Suzi Hong, DeWayne P. Williams, Jordan Kohn, Julian Koenig, Gustavo A. Reyes del Paso, Julian F. Thayer   +6 more
doaj   +1 more source

Positive End-Expiratory Pressure may alter breathing cardiovascular variability and baroreflex gain in mechanically ventilated patients

Respiratory Research, 2010
Background Baroreflex allows to reduce sudden rises or falls of arterial pressure through parallel RR interval fluctuations induced by autonomic nervous system.
Papelier Yves, Médigue Claire, Van de Louw Andry, Cottin François   +3 more
doaj   +1 more source