Results 21 to 30 of about 6,847,328 (247)

Functional-Optical Coherence Tomography: A Non-invasive Approach to Assess the Sympathetic Nervous System and Intrinsic Vascular Regulation

Frontiers in Physiology, 2019
Sympathetic nervous system dysregulation and vascular impairment in neuronal tissue beds are hallmarks of prominent cardiorespiratory diseases. However, an accurate and convenient method of assessing SNA and local vascular regulation is lacking ...
Nicholas G. Jendzjowsky, Craig D. Steinback, Robert J. Herman, Willis H. Tsai, Willis H. Tsai, Fiona E. Costello, Fiona E. Costello, Fiona E. Costello, Richard J. A. Wilson   +8 more
doaj   +1 more source

Acute electromyostimulation decreases muscle sympathetic nerve activity in patients with advanced chronic heart failure (EMSICA Study). [PDF]

PLoS ONE, 2013
Muscle passive contraction of lower limb by neuromuscular electrostimulation (NMES) is frequently used in chronic heart failure (CHF) patients but no data are available concerning its action on sympathetic activity.
Marc Labrunée, Fabien Despas, Philippe Marque, Thibaut Guiraud, Michel Galinier, Jean Michel Senard, Atul Pathak   +6 more
doaj   +1 more source

Inducing Peripheral Sympathetic Nerve Activity by Therapeutic Electrical Stimulation

Journal of Orthopaedic Surgery, 2005
Purpose. To examine whether the activity of peripheral sympathetic nerves in animals with spinal cord injury can be controlled using therapeutic electrical stimulation. Methods.
Y Mikami, T Ogura, T Kubo, Y Kira, S Aramaki   +4 more
doaj   +1 more source

Somatosympathetic vasoconstrictor reflexes in human spinal cord injury: responses to innocuous and noxious sensory stimulation below lesion

Frontiers in Physiology, 2012
It is known that the sudden increases in blood pressure associated with autonomic dysreflexia in people with spinal cord injury (SCI) is due to a spinally-mediated reflex activation of sympathetic vasoconstrictor neurones supplying skeletal muscle and ...
Vaughan G Macefield, Vaughan G Macefield, Alexander R Burton, Alexander R Burton, Rachael A Brown, Rachael A Brown   +5 more
doaj   +1 more source

Increases in muscle sympathetic nerve activity, heart rate, respiration and skin blood flow during passive viewing of exercise

Frontiers in Neuroscience, 2013
The cardiovascular and respiratory effects of exercise have been widely studied, as have the autonomic effects of imagined and observed exercise. However, the effects of observed exercise in the first person have not been documented, nor have direct ...
Rachael eBrown, Ursula eKemp, Vaughan G Macefield, Vaughan G Macefield   +3 more
doaj   +1 more source

Does sympathetic vasoconstriction contribute to metabolism: Perfusion matching in exercising skeletal muscle?

Frontiers in Physiology, 2022
The process of matching skeletal muscle blood flow to metabolism is complex and multi-factorial. In response to exercise, increases in cardiac output, perfusion pressure and local vasodilation facilitate an intensity-dependent increase in muscle blood ...
Darren S. DeLorey, Philip S. Clifford
doaj   +1 more source

Advantage of recording single-unit muscle sympathetic nerve activity in heart failure

Frontiers in Physiology, 2012
Elevated sympathetic activation is a characteristic feature of heart failure (HF). Excessive sympathetic activation under resting conditions has been shown to increase from the early stages of the disease, and is related to prognosis. Direct recording of
HISAYOSHI eMURAI, Masayuki eTakamura, Shuichi eKaneko   +2 more
doaj   +1 more source

The sympathetic nervous system in healthy and hypertensive pregnancies: physiology or pathology?

Experimental Physiology, 2023
The progression from conception through to the postpartum period represents an extraordinary period of physiological adaptation in the mother to support the growth and development of the fetus.
Áine Brislane, Margie H. Davenport, Craig D. Steinback   +2 more
doaj   +1 more source

Sympathetic nerve-derived ATP regulates renal medullary blood flow via vasa recta pericytes [PDF]

, 2013
Pericyte cells are now known to be a novel locus of blood flow control, being able to regulate capillary diameter via their unique morphology and expression of contractile proteins. We have previously shown that exogenous ATP causes constriction of vasa
Peppiatt-Wildman, C. M., C. M. Peppiatt-Wildman, Scott S Wildman, C. Crawford, Wildman, Scott S.P., Kennedy-Lydon, T. M., M. C. Kelly, Wildman, S. S. P., Peppiatt-Wildman, Claire M., S. S. P. Wildman, T. M. Kennedy-Lydon, Kelly, M. C., Crawford, C.   +12 more
core   +1 more source

Randomized preclinical study of machine perfusion in vascularized composite allografts

BJS (British Journal of Surgery), EarlyView., 2020
This study was designed to identify the optimum machine perfusion parameters for preservation of limbs before transplantation, and determine whether this was better than cold storage. Normothermic machine perfusion at a pressure of 70 mmHg (NMP‐70) provided superior preservation to cold storage after transplantation.
K. R. Amin, J. P. Stone, J. Kerr, A. Geraghty, L. Joseph, A. Montero‐Fernandez, J. K. Wong, J. E. Fildes   +7 more
wiley   +1 more source