Search Results - "Milsom, William K"
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Do naked mole rats accumulate a metabolic acidosis or an oxygen debt in severe hypoxia?
Published in Journal of experimental biology (07-02-2019)“…In severe hypoxia, most vertebrates increase anaerobic energy production, which results in the development of a metabolic acidosis and an O debt that must be…”
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pH regulation in hibernation: Implications for ventilatory and metabolic control
Published in Comparative biochemistry and physiology. Part A, Molecular & integrative physiology (01-11-2019)“…Mammals in hibernation retain a relatively constant blood plasma pH (extracellular pH; pHe) that is typically alkaline relative to the pH of neutral water…”
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How bar-headed geese fly over the Himalayas
Published in Physiology (Bethesda, Md.) (01-03-2015)“…Bar-headed geese cross the Himalayas on one of the most iconic high-altitude migrations in the world. Heart rates and metabolic costs of flight increase with…”
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Lactate provides a strong pH-independent ventilatory signal in the facultative air-breathing teleost Pangasianodon hypophthalmus
Published in Scientific reports (25-07-2017)“…Fish regulate ventilation primarily by sensing O 2 -levels in the water and arterial blood. It is well established that this sensory process involves several…”
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The Kölliker-Fuse nucleus orchestrates the timing of expiratory abdominal nerve bursting
Published in Journal of neurophysiology (01-02-2018)“…Coordination of respiratory pump and valve muscle activity is essential for normal breathing. A hallmark respiratory response to hypercapnia and hypoxia is the…”
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Morphological and morphometric specializations of the lung of the Andean goose, Chloephaga melanoptera: A lifelong high-altitude resident
Published in PloS one (24-03-2017)“…High altitude flight in rarefied, extremely cold and hypoxic air is a very challenging activity. Only a few species of birds can achieve it. Hitherto, the…”
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Evolution of muscle phenotype for extreme high altitude flight in the bar-headed goose
Published in Proceedings of the Royal Society. B, Biological sciences (22-10-2009)“…supply to flight muscle…”
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The trans-Himalayan flights of bar-headed geese (Anser indicus)
Published in Proceedings of the National Academy of Sciences - PNAS (07-06-2011)“…Birds that fly over mountain barriers must be capable of meeting the increased energetic cost of climbing in low-density air, even though less oxygen may be…”
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Hypoxia reduces the hypothalamic thermogenic threshold and thermosensitivity
Published in The Journal of physiology (01-11-2009)“…Hypoxia is well known to reduce the body temperature ( T b ) of mammals, although the neural origins of this response remain uncertain. Short-term hypoxic…”
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10
High thermal sensitivity of blood enhances oxygen delivery in the high-flying bar-headed goose
Published in Journal of experimental biology (15-06-2013)“…The bar-headed goose (Anser indicus) crosses the Himalaya twice a year at altitudes where oxygen (O2) levels are less than half those at sea level and…”
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Control of breathing and adaptation to high altitude in the bar-headed goose
Published in American journal of physiology. Regulatory, integrative and comparative physiology (01-07-2007)“…The bar-headed goose flies over the Himalayan mountains on its migratory route between South and Central Asia, reaching altitudes of up to 9,000 m. We compared…”
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Reduced metabolism supports hypoxic flight in the high-flying bar-headed goose ( Anser indicus )
Published in eLife (03-09-2019)“…The bar-headed goose is famed for migratory flight at extreme altitude. To better understand the physiology underlying this remarkable behavior, we imprinted…”
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Sildenafil does not improve performance in 16.1 km cycle exercise time-trial in acute hypoxia
Published in PloS one (17-01-2019)“…Sildenafil is a pulmonary vasodilator that has potential to mitigate the decrement in endurance performance caused by hypoxic pulmonary vasoconstriction. The…”
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Glutamatergic Receptors Modulate Normoxic but Not Hypoxic Ventilation and Metabolism in Naked Mole Rats
Published in Frontiers in physiology (18-02-2019)“…Naked mole rats ( ) are among the most hypoxia-tolerant mammals, but their physiological responses to acute and chronic sustained hypoxia (CSH), and the…”
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KCNQ Current Contributes to Inspiratory Burst Termination in the Pre-Bötzinger Complex of Neonatal Rats in vitro
Published in Frontiers in physiology (13-04-2021)“…The pre-Bötzinger complex (preBötC) of the ventral medulla generates the mammalian inspiratory breathing rhythm. When isolated in explants and deprived of…”
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A comparative analysis of putative oxygen-sensing cells in the fish gill
Published in Journal of experimental biology (15-04-2008)“…We investigated the distribution of serotonin (5-HT)-containing neuroepithelial cells (NECs), the putative O(2) sensing cells, in the gills of four species of…”
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Maximum running speed of captive bar-headed geese is unaffected by severe hypoxia
Published in PloS one (01-04-2014)“…While bar-headed geese are renowned for migration at high altitude over the Himalayas, previous work on captive birds suggested that these geese are unable to…”
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Flying High: A Theoretical Analysis of the Factors Limiting Exercise Performance in Birds at Altitude
Published in Respiratory physiology & neurobiology (01-11-2006)“…The ability of some bird species to fly at extreme altitude has fascinated comparative respiratory physiologists for decades, yet there is still no consensus…”
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New insights into gill chemoreception: Receptor distribution and roles in water and air breathing fish
Published in Respiratory physiology & neurobiology (01-12-2012)“…Highlights ► Chemoreceptors involved in reflex cardiorespiratory responses to hypoxia and hypercarbia are variable between species. ► Their location (gills,…”
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Effects of two protocols of intermittent hypoxia on human ventilatory, cardiovascular and cerebral responses to hypoxia
Published in The Journal of physiology (01-09-2005)“…We determined the ventilatory, cardiovascular and cerebral tissue oxygen response to two protocols of normobaric, isocapnic, intermittent hypoxia. Subjects ( n…”
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