Results 81 to 90 of about 6,670 (154)

Intrinsic pH chemosensitivity of acutely dissociated medullary serotonergic and retrotrapezoid neurones

The Journal of Physiology, EarlyView.
Abstract figure legend Central respiratory chemoreceptors (CRCs) are critical for maintaining normal systemic levels of pH and PCO2. A CRC must respond to pH via intrinsic mechanisms. Here we quantified intrinsic chemosensitivity of medullary 5‐HT neurones and retrotrapezoid nucleus (RTN) neurones using acute dissociation.
Yuanming Wu, Eduardo Bravo, George Bradley Richerson   +2 more
wiley   +1 more source

The role of group III/IV afferent feedback in the ventilatory, pressor and metabolic responses to exercise in normoxia and hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend Participants completed cycling exercise with (placebo) and without (25 µg intrathecal fentanyl) intact group III/IV muscle afferent feedback in three settings: normoxia, acute hypoxia and chronic hypoxia after 7–9 days of acclimatisation (∼3800 m). Blocking afferent feedback suppressed exercise hyperpnoea across all environments,
Elliott J. Jenkins, Phuong L. Ha, Connor A. Howe, Jay M. J. R. Carr, Justin A. Monteleone, Andrew J. M. Douglas, Abigail Nicholson, Andrew Steele, Brydie Lemkes, Jodie L. Koep, L. Madden Brewster, Jennifer Duffy, Mathew I. B. Debenham, Tena Monaghan, Declan Isaak, Jacob McCormick, Brian H. Dalton, Chris J. McNeil, Jared Baylis, David MacLeod, Mike Stembridge, Markus Amann, Philip N. Ainslie, Travis D. Gibbons   +23 more
wiley   +1 more source

Single-array measurements reveal non-uniform, mosaic-like chemosensory arrays in bacteria

Nature Communications
Motile bacteria use supramolecular arrays to detect effector gradients in their environment. In Escherichia coli, thousands of chemoreceptor molecules with diverse sensory properties cooperatively modulate the kinase activity of these arrays and, via ...
Vered Frank, Nir Livne, Moriah Koler, Ady Vaknin   +3 more
doaj   +1 more source

Conformational diversity in poly‐HAMP arrays and its implications for signal transduction

Protein Science, Volume 35, Issue 9, September 2026.
Abstract Prokaryotic transmembrane receptors are built around a helical coiled‐coil backbone, with sensory, modulatory, and effector domains arranged along its length. The modulatory HAMP domain forms a parallel four‐helix coiled coil integrated into this backbone, typically connecting transmembrane segments with downstream cytosolic domains.
Murray Coles, Carolin P. Ewers, Reinhard Albrecht, Mikel Martinez‐Goikoetxea, Malgorzata Orlowska, Jörg Martin, Andrei N. Lupas, Marcus D. Hartmann, Stanislaw Dunin‐Horkawicz   +8 more
wiley   +1 more source

In Vivo Evaluation of Psoralen in a Copper Sulfate–Induced Chick (Gallus gallus domesticus) Emesis Model and In Silico Analysis of Its Interaction With D2, 5‐HT3A, and Muscarinic Receptors

ChemistryOpen, Volume 15, Issue 8, August 2026.
Psoralen (PSN) demonstrates significant dose‐dependent antiemetic activity in a copper sulfate–induced chick emesis model. Integrated in vivo and in silico analyses reveal reduced retching frequency, prolonged latency, and favorable multi‐receptor interactions with D2, 5‐HT3A, and muscarinic receptors, highlighting PSN as a promising multi‐target ...
Kishor Chandra, Sharif Uddin Bahar, Khadija Akter, Mst Muslima Khatun, Samiran Sadhukhan, Progna Saha Puja, Fazley Rohan, Md Shimul Bhuia, Mohammed Alfaifi, Faisal H. Altemani, Faisal Alsenani, Salehin Sheikh, Muhammad Torequl Islam   +12 more
wiley   +1 more source

Bilateral Carotid Body Tumor – A Rare Case Report

JK Science
Carotid body tumor is an uncommon tumor seen near bifurcation of carotid artery which arises from chemoreceptor cells of carotid body. They are slow growing and often asymptomatic and can be functioning or non-functioning tumors.
Nanda Patil, Neha Ghadge, Dhara Dodia
doaj  

Respiratory control at high altitude: The chemoreceptor as a paragon of plasticity

The Journal of Physiology, EarlyView.
Jerome A. Dempsey
wiley   +1 more source

Targeting the Carotid Body Function With Big‐K+‐Channel Blocker ENA‐001 in Opioid‐Induced Respiratory Depression: A Scoping Review

Pharmacology Research &Perspectives, Volume 14, Issue 4, August 2026.
ABSTRACT Opioids, most intravenous anesthetics and various illicit substances can cause fatal respiratory depression by depressing central respiratory networks. ENA‐001, a ventilatory modulator targeting the carotid bodies, has emerged as a potential countermeasure without impairing analgesia or hypnosis.
Jimmy J. Arevalo, Monique van Velzen, Simone C. Jansen, Maarten van Lemmen, Elise Sarton, Albert Dahan, Erik Olofsen, Joseph F. Cotten, Marieke Niesters, Rutger M. van der Schrier   +9 more
wiley   +1 more source

Pufferfish exposure and presumed tetrodotoxicosis in Australian dogs: 372 cases (2007–2018)

Australian Veterinary Journal, Volume 104, Issue 8, Page 497-508, August 2026.
Introduction Tetrodotoxin (TTX) is a neurotoxin found in pufferfish that results in the blockade of excitatory conduction and clinical signs including gastrointestinal upset and paralysis. The objectives of this study were to describe the epidemiology of pufferfish exposure and presumed tetrodotoxicosis in dogs, and to determine associations with the ...
J Hanson, CR Sharp, EM Leister
wiley   +1 more source

To Move or Not to Move: When and How Bacteria Suppress Flagellar Motility

Molecular Microbiology, Volume 126, Issue 2, Page 173-189, August 2026.
Motility cessation in bacteria is a key regulatory strategy that provides multiple survival advantages including enhanced community cooperation, niche adaptation and evasion of host immune responses. This process is controlled by associated mechanisms such as post‐translational modifications and second messenger signalling that stabilise non‐motile ...
Fatemeh Mohaghegh, Jacob Scadden, Matthew A. B. Baker   +2 more
wiley   +1 more source