Results 111 to 120 of about 355,104 (264)

Pulmonary arterial mechanoreceptors mediate sustained sympathoexcitation during high altitude hypoxia in humans

open access: yesExperimental Physiology, EarlyView.
Abstract Sympathetic nervous system activation is a hallmark of high‐altitude hypoxia, yet the afferent mechanisms remain incompletely defined. We examined the relative contributions of pulmonary arterial mechanoreceptors and carotid chemoreceptors – two excitatory pathways co‐activated by hypoxia – to sustained sympathoexcitation at altitude.
Michiel T. Ewalts   +13 more
wiley   +1 more source

Systemic pirfenidone treatment fails to mitigate fibrosis and compromises functional recovery in a porcine model of volumetric muscle loss

open access: yesExperimental Physiology, EarlyView.
Abstract Repurposing clinically approved antifibrotic agents presents a potential near‐term therapeutic strategy to mitigate the extensive fibrotic scarring that follows severe volumetric muscle loss (VML) injury and inhibits functional recovery. We hypothesized that daily oral administration of pirfenidone, an FDA‐approved antifibrotic, would mitigate
Jessica M. Motherwell   +4 more
wiley   +1 more source

Immediate Nerve Transfer for the Treatment of Peroneal Nerve Palsy Secondary to an Intraneural Ganglion: Case Report and Review

open access: yes, 2017
Intraneural ganglion cysts that occur within the common peroneal nerve are a rare cause of foot drop. The current standard of treatment for intraneural ganglion cysts involving the common peroneal nerve involves (1) cyst decompression and (2) ligation ...
Jennifer L. Giuffre   +2 more
core   +1 more source

Age‐related loss of hysteresis in the spontaneous vascular sympathetic baroreflex is associated with altered neural rather than mechanical control

open access: yesExperimental Physiology, EarlyView.
Abstract The vascular sympathetic baroreflex is critical for stabilising blood pressure. A notable feature of this reflex is hysteresis, a directional asymmetry in responsiveness during rising versus falling pressure that is evident in young adults but attenuated in older age.
Guto Wyn Hughes   +5 more
wiley   +1 more source

Effects of nocturnal periodic breathing on sympathetic nerve activity and ventilatory control at high altitude: a randomised, crossover study

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Schematic overview of the randomised crossover study investigating the effects of nocturnal periodic breathing (nPB) on sympathetic activity and ventilatory acclimatisation in hypobaric hypoxia equivalent to 4000 m altitude. Participants completed two 3‐day sojourns where nPB was inhibited by increasing inspiratory CO2 fraction ...
Johanna Roche   +13 more
wiley   +1 more source

Skeletal muscle adaptation to muscle activity and hypoxia: Differential structural and metabolic remodelling

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend There has been controversy about the structural (capillary) response of skeletal muscle to altered O2 status, involving decreased supply (hypoxia) or increased demand (activity). Here we demonstrate that seven days of activation of skeletal muscle by indirect electrical stimulation led to significant expansion of the capillary ...
David Hauton   +3 more
wiley   +1 more source

Role of reactive oxygen species in mediating peripheral hypoxic vasodilation and sympathoexcitation at high altitude

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend High‐altitude acclimatisation increases muscle sympathetic nerve activity (MSNA) via activation of the arterial chemoreflex, pulmonary arterial baroreceptors and resetting of the sympathetic vascular baroreflex. However attempting to silence these mechanisms only partially normalises MSNA, implicating other contributory ...
Liam D. Corr   +15 more
wiley   +1 more source

Trafficking and potentiation of Nav1.7 and Nav1.8 channels are mediated by IQGAP1

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend IQGAP1 binds to the voltage‐gated Nav1.7 and Nav1.8 channels and TRPA1 channels in sensory neurons. Inflammatory mediators (IM), including PGE2 and TNFα, released during nerve injury and inflammation activate intracellular signalling messengers such as PKA, p38 MAPK and Cdc42 through their respective receptors.
Xuming Zhang   +2 more
wiley   +1 more source

Restoration of neuromuscular function by mitochondrial transplantation in injured mouse skeletal muscle

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Mice received chemical injury (cardiotoxin) in the tibialis anterior muscle of one limb, and the contralateral muscle was injected with phosphate‐buffered saline (PBS) as a sham control. Mice then received PBS or mitochondria suspended in PBS into the tail vein.
Stephen E. Alway   +6 more
wiley   +1 more source

An alternative nerve conduction study method to evaluate early diabetic neuropathy: Ratio of different diameter nerve fibers in peroneal nerve

open access: yes, 2015
Different nerve fibers may have disparate conduction parameters even though they are in the same peripheral nerve. Hyperglycemia can have differential effects on nerve fibers, depending on diameter. In diabetes, conventional nerve conduction studies have
Erdoğan, Çağdaş.   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy