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Melatonin enhances the hypoxic response of rat carotid body chemoreceptor

Journal of Pineal Research, 2005
Melatonin attenuates carotid chemoreceptor response to hypercapnic acidosis and may contribute to the effect of circadian rhythms on the chemoreflex. The purpose of this study was to test the hypothesis that melatonin modulates rat carotid chemoreceptor ...
George L Tipoe, Man-Lung Fung
exaly   +2 more sources

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Adaptation in chemoreceptor cells

Journal of Comparative Physiology A, 1990
We determined the time course of cumulative adaptation, e.g. the recovery from the effects of prior stimulation, in glutamate-sensitive chemoreceptor cells in extracellular recordings from the walking legs of the lobster, Homarus ...
Rainer Voigt, Jelle Atema
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Melatonin attenuates rat carotid chemoreceptor response to hypercapnic acidosis

Journal of Pineal Research, 2004
Respiratory activity is under circadian modulation and the physiological mechanisms may involve the pineal secretory product, melatonin, and the carotid chemoreceptor.
George L Tipoe, Man Lung Fung
exaly   +2 more sources

Cell and explant culture of olfactory chemoreceptor cells

Journal of Neuroscience Methods, 1985
An in vitro system for the study of maturation of rat and chick embryonic olfactory receptor cells is presented. A variety of dissociating agents, culture media and substrata were tried in attempts to obtain a preparation of mature living olfactory receptor cells readily visible in the microscope.
F, Gonzales, A I, Farbman, R C, Gesteland   +2 more
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Reliability of chemoreceptor cell response

Journal of Comparative Physiology A, 1994
1. To determine reliability of stimulus intensity coding we measured the response variability of 30 hydroxy-L-proline sensitive chemoreceptor cells from antennules of Homarus americanus. First, cells were tested with 5 repeated presentations of 10-5M and l0-4M hydroxy-L-proline.
C.L. Merrill, R. Voigt, J. Atema
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Carotid body chemoreceptors in dissociated cell culture

Microscopy Research and Technique, 2002
AbstractCarotid body (CB) glomus or type 1 cells act as peripheral chemoreceptors which detect changes in arterial PO2, PCO2, and pH and help maintain homeostasis via the reflex control of ventilation. Over the last ∼12 years significant progress has been made towards understanding chemotransduction mechanisms using freshly isolated or cultured type 1 ...
C A, Nurse, I M, Fearon
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NADPH Oxidase Does Not Account Fully for O2-Sensing in Model Airway Chemoreceptor Cells

Biochemical and Biophysical Research Communications, 2001
A key feature of O2 sensing by chemoreceptor tissues is the hypoxic inhibition of K+ channels. However, mechanisms coupling a fall of pO2 to channel closure differ between tissues: O2 regulation of K+ channels in chemoreceptive neuroepithelial bodies and
C Peers, Paul J Kemp
exaly   +2 more sources

Time course of K+current inhibition by low oxygen in chemoreceptor cells of adult rabbit carotid body Effects of carbon monoxide

FEBS Letters, 1992
K+ currents recorded from adult rabbit chemoreceptor cells are reversibly inhibited on lowering the pO2 in the bathing solution. Bath application of a hypoxic TTX-containing solution revealed that inhibition of K+ current by low pO2, proceeds faster than
JOSÉ R López-López
exaly   +2 more sources

Evolution of Taste and Solitary Chemoreceptor Cell Systems

Brain, Behavior and Evolution, 2008
Vertebrates possess four distinct chemosensory systems distinguishable on the basis of structure, innervation and utilization: olfaction, taste, solitary chemoreceptor cells (SCC) and the common chemical sense (free nerve endings). Of these, taste and the SCC sense rely on secondary receptor cells situated in the epidermis and synapsing on sensory ...
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Oxygen Sensing and the Electrophysiology of Arterial Chemoreceptor Cells

Physiology, 1993
The carotid bodies sense reductions in arterial oxygen tension (PO2) and stimulate the respiratory center to induce hyperventilation. Lowering PO2, detected by O2-sensitive K+ channels, evokes a selective inhibition of the K+ current of glomus cells, with an increase of cellular excitability and cytosolic Ca2+.
J Lopez-Barneo, AR Benot, J Urena
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