Results 61 to 70 of about 6,670 (154)

Hypoxia and hypercapnia elicit overlapping but distinct skeletal muscle toxicities

The Journal of Physiology, EarlyView.
Abstract figure legend Hypoxia and hypercapnia cause overlapping skeletal muscle phenotypes, including atrophy, change in myofibre metabolic profile and myogenic response to injury. Both signals operate via distinct cellular pathways. Abstract Skeletal muscle dysfunction is strongly associated with elevated mortality in acute and chronic pulmonary ...
Joseph Balnis, Ariel Jaitovich
wiley   +1 more source

Cannabinoid exposure during pregnancy: Cardiorespiratory effects and offspring outcomes

The Journal of Physiology, EarlyView.
Abstract figure legend Prenatal exposure to cannabinoids has been investigated across human and animal studies to understand its impact on physiological development. Evidence suggests that early‐life cannabinoid exposure influence multiple developmental processes, extending beyond neurodevelopmental outcomes to potentially affect placental function ...
Luis Gustavo A. Patrone, Luciane H. Gargaglioni   +1 more
wiley   +1 more source

Hemodynamic and ventilatory response to different levels of hypoxia and hypercapnia in carotid body-denervated rats

Clinics, 2013
OBJECTIVE: Chemoreceptors play an important role in the autonomic modulation of circulatory and ventilatory responses to changes in arterial O2 and/or CO2.
João Paulo J. Sabino, Mauro de Oliveira, Humberto Giusti, Mogens Lesner Glass, Helio C. Salgado, Rubens Fazan Jr.   +5 more
doaj  

Networked Chemoreceptors Benefit Bacterial Chemotaxis Performance

mBio, 2016
Motile bacteria use large receptor arrays to detect and follow chemical gradients in their environment. Extended receptor arrays, composed of networked signaling complexes, promote cooperative stimulus control of their associated signaling kinases. Here,
Vered Frank, Germán E. Piñas, Harel Cohen, John S. Parkinson, Ady Vaknin   +4 more
doaj   +1 more source

Elevated carotid body tonic activity contributes to ventilatory acclimatization and de‐acclimatization to high altitude at rest and during exercise

The Journal of Physiology, EarlyView.
Abstract figure legend Participants spent 13 days at high altitude (3800 m), where the reduced inspired oxygen pressure (↓PiO2$ \downarrow {P_{{\mathrm{i}}{{\mathrm{O}}_2}}}$) which elicited ventilatory acclimatization and increased inhibition of ventilation by transient hyperoxia (ΔV̇E$\Delta {\dot V_{\mathrm{E}}}$).
Ayechew A. Getu, L. Madden Brewster, Travis D. Gibbons, James D. Anholm, Michael Stembridge, Philip N. Ainslie, Jay M. J. R. Carr   +6 more
wiley   +1 more source

Adapt locally and act globally: strategy to maintain high chemoreceptor sensitivity in complex environments

Molecular Systems Biology, 2011
In bacterial chemotaxis, several types of ligand‐specific receptors form mixed clusters, wherein receptor–receptor interactions lead to signal amplification and integration.
Ganhui Lan, Sonja Schulmeister, Victor Sourjik, Yuhai Tu   +3 more
doaj   +1 more source

Reduced cardiovascular mortality at moderate altitude: a putative role of physical activity and body mass

The Journal of Physiology, EarlyView.
Abstract figure legend Benefits of performing physical exercise at moderate altitude. At moderate altitude, increased resting metabolic rate and physical exertion promote physical fitness and exercise tolerance, whereas hypoxia suppresses appetite and elicits adaptations that increase tissue O2 delivery while augmenting O2‐independent ATP production ...
Robert T. Mallet, Johannes Burtscher, Hannes Gatterer, Katharina Hüfner, Samuel Verges, Tadej Debevec, Martin Burtscher   +6 more
wiley   +1 more source

Carotid body physiology meets cytochrome c oxidase crystallography Commentary to Ortega-Sáenz P, López-Barneo J. Physiology of the Carotid Body: From Molecules to Disease. Annu Rev Physiol 82: 127-149, 2020. Torres-Torrelo H, Ortega-Sáenz P, Gao L, López-Barneo J. Lactate sensing mechanisms in arterial chemoreceptor cells. Nat Commun 12: 4166, 2021. [PDF]

Pflugers Arch, 2022
Acker H, Fandrey J.
europepmc   +1 more source

Breathing irregularities and postnatal hypoxaemia in an experimental model of essential hypertension

The Journal of Physiology, EarlyView.
Abstract figure legend Neonatal spontaneously hypertensive rats (SHRs) exhibit inherent respiratory dysfunction in early life, including oscillatory breathing patterns and apnoeic events that cause oxygen desaturation and brain hypoxia, in addition to an impaired hypoxic ventilatory response.
Beatriz N. Vieira, Letícia R. Mendes, Sarah G. Mariano, Isabela P. Leirão, Emilson D. Pereira‐Junior, Milede H. Saraiva Paes, Pedro L. Katayama, Daniel B. Zoccal   +7 more
wiley   +1 more source

Hypoxia inducible factor-dependent upregulation of Agrp in glomus type I cells of the carotid body

Molecular Metabolism
Agouti-related peptide (AgRP) is a well-established potent orexigenic peptide primarily expressed in hypothalamic neurons. Nevertheless, the expression and functional significance of extrahypothalamic AgRP remain poorly understood.
Luis Leon-Mercado, Ivan Menendez-Montes, Jonathan Tao, Bandy Chen, David P. Olson, C. Mackaaij, C.G.J. Cleypool, Laurent Gautron   +7 more
doaj   +1 more source