Results 41 to 50 of about 1,788,349 (198)

Inhibition of PDE5 restores depressed baroreflex sensitivity in renovascular hypertensive rats

Frontiers in Physiology, 2016
Renal artery stenosis is frequently associated with resistant hypertension, which is defined as failure to normalize blood pressure (BP) even when combined drugs are used.
Clenia O Cavalcanti, Rafael R Alves, Rafael R Alves, Alessandro L Oliveira, Alessandro L Oliveira, JOSIANE CAMPOS CRUZ, Maria Socorro França-Silva, Valdir Andrade Braga, Camille M Balarini, Camille M Balarini   +9 more
doaj   +1 more source

Cardiovagal Baroreflex Hysteresis Using Ellipses in Response to Postural Changes

Frontiers in Neuroscience, 2021
The cardiovagal branch of the baroreflex is of high clinical relevance when detecting disturbances of the autonomic nervous system. The hysteresis of the baroreflex is assessed using provoked and spontaneous changes in blood pressure.
Babak Dabiri, Joana Brito, Eugenijus Kaniusas   +2 more
doaj   +1 more source

Glucocorticoids and HPA axis regulation in the stress–obesity connection: A comprehensive overview of biological, physiological and behavioural dimensions

Clinical Obesity, Volume 15, Issue 2, April 2025.
Summary Chronic stress, characterized by increased long‐term exposure to the glucocorticoid hormone cortisol, is increasingly linked to obesity development. Still, various knowledge gaps persist, including on underlying pathophysiological mechanisms. The aim of the current review is to provide the latest insights on the connection between stress and ...
Robin Lengton, Myrte Schoenmakers, Brenda W. J. H. Penninx, Mariëtte R. Boon, Elisabeth F. C. van Rossum   +4 more
wiley   +1 more source

Impact of Hypoxemia Severity on Cardiac Autonomic Regulation in Children With Sleep‐Disordered Breathing: A McGill Oximetry‐Based Analysis

Journal of Sleep Research, EarlyView.
ABSTRACT Sleep‐related breathing disorders (SRBD) represent a significant paediatric health concern. Traditional polysomnographic indices, such as the apnoea–hypopnoea index, may not fully capture the physiological burden of paediatric SRBD, highlighting the need to better characterise the impact of nocturnal hypoxemia on cardiac autonomic regulation ...
Gintare Oboleviciene, Ausra Snipaitiene, Valdone Miseviciene   +2 more
wiley   +1 more source

Baroreflex Sensitivity in Patients with Coronary Artery Disease Who Underwent Percuteous Coronary Intervention

Majalah Kardiologi Indonesia, 2013
Background.Autonomic dysfunction contributes to incidence of ventricular arrhythmias and sudden cardiac death in patients with coronary artery disease (CAD).
Cholid Tri Tjahjono, Muhammad Munawar, RWM Kaligis, Idris Idham   +3 more
doaj   +1 more source

A new insight on postural tachycardia syndrome in 102 adults with hypermobile Ehlers-Danlos Syndrome/hypermobility spectrum disorder

Monaldi Archives for Chest Disease, 2020
There is an association between joint hypermobility, hypermobile Ehlers-Danlos syndrome (hEDS) and different forms of orthostatic intolerance. Objective: to explore autonomic profile in a large cohort of adults with hEDS and hypermobility spectrum ...
Claudia Celletti, Beatrice Borsellino, Marco Castori, Federica Censi, Giovanni Calcagnini, Filippo Camerota, Stefano Strano   +6 more
doaj   +1 more source

Impaired Windkessel function and proximal aortic stiffness: Linking vascular ageing to cognitive decline

Experimental Physiology, EarlyView.
Abstract Central arterial stiffening, particularly of the proximal aorta, is increasingly recognised as a pivotal contributor to cardiovascular disease, dementia, and mild cognitive impairment. Loss of Windkessel function amplifies pulsatile pressure, reduces diastolic perfusion and accelerates microvascular damage in the brain.
Jun Sugawara, Hirofumi Tanaka
wiley   +1 more source

Ovarian hormone deprivation reduces oxytocin expression in Paraventricular Nucleus preautonomic neurons and correlates with baroreflex impairment in rats

Frontiers in Physiology, 2016
The prevalence of cardiovascular diseases including hypertension increases dramatically in women after menopause, however the mechanisms involved remain incompletely understood.
Vitor Ulisses De Melo, Rayssa Rizerio Moura Saldanha, Carla Rocha Santos, JOSIANE CAMPOS CRUZ, Vitor A. Lira, Valter Joviniano Santana Filho, Lisete Compagno Michelini   +6 more
doaj   +1 more source

The influence of tobacco smoking on the relationship between pressure and flow in the middle cerebral artery in humans. [PDF]

PLoS ONE, 2013
BACKGROUND: Cigarette smoking is associated with an increased risk of stroke but the mechanism is unclear. The study examined whether acute and chronic cigarette smoking alters the dynamic relationship between blood pressure and cerebral blood flow.
Karen C Peebles, Helen Horsman, Yu-Chieh Tzeng   +2 more
doaj   +1 more source

Time‐course analysis of cerebral circulation and cardiorespiratory responses to acute central blood volume reduction in healthy young males

Experimental Physiology, EarlyView.
Abstract Central blood volume (CBV) reduction challenges circulatory and respiratory homeostasis, particularly during the initial compensatory phase (0–2 min), when rapid physiological adaptations occur. In this study, we examined dynamic cardiorespiratory responses to CBV reduction using lower‐body negative pressure (LBNP) in 11 healthy young males ...
Marina Feeley, Tomoki Watada, Go Ito, Ai Shimada, Toru Sawai, Hideomi Nakata, Shingo Otsuki, Tadayoshi Miyamoto   +7 more
wiley   +1 more source