Results 221 to 230 of about 11,967,962 (263)

Endothelin Modulates Chemoreceptor Cell Function in Mammalian Carotid Body

1996
The endothelins (ET-1, ET-2, ET-3), a family of unique 21 amino acid peptides, produce a transient vasodilation and protracted vasoconstriction in numerous vascular beds (see Rubanyi and Polokoff, 1994, for review). The synthesis and release of ETs was first described in cultured vascular endothelial cells, but later studies showed that ETs and ...
L, He, J, Chen, B, Dinger, L, Stensaas, S, Fidone   +4 more
openaire   +2 more sources

Modification of the Glutathione Redox Environment and Chemoreceptor Cell Responses

2006
Carotid body (CB) chemoreceptor cells (CBCC) are involved in maintaining the homeostasis of O2 by detecting arterial blood PO2 and become activated when arterial PO2 decreases. In response to hypoxia, CBCC release neurotransmitters which excite the adjacent afferent nerve terminals of the carotid sinus nerve, increase their action potential and, via ...
A, Gómez-Niño, M T, Agapito, A, Obeso, C, González   +3 more
openaire   +2 more sources

Multiple Central Chemoreceptor Sites: Cell Types and function in vivo

2008
Central chemoreception is a distributed property involving many sites and neuronal types. Focal acidosis in conscious or anesthetized animals at many hindbrain sites stimulates breathing. The steady-state CO2 response in conscious animals is reduced by cell specific lesions of catecholamine, 5HT or neurokinin-1 receptor (NK1R) expressing neurons and by
Gene, Nattie, Aihua, Li
openaire   +2 more sources

Temporal Resolution in Olfaction: Stimulus Integration Time of Lobster Chemoreceptor Cells

Journal of Experimental Biology, 1996
ABSTRACT The stimulus integration time of lobster olfactory receptor cells in situ was determined using extracellularly recorded spiking responses from receptor cells and on-line high-resolution measurement of odor square pulses. At a fixed odor concentration, odor steps of 200 ms duration elicited maximum responses; shorter odor steps ...
, Gomez, , Atema
openaire   +2 more sources

GABAergic Pump Cells of Solitary Tract Nucleus Innervate Retrotrapezoid Nucleus Chemoreceptors

Journal of Neurophysiology, 2007
The retrotrapezoid nucleus (RTN) contains central respiratory chemoreceptors that are inhibited by activation of slowly adapting pulmonary stretch receptors (SARs). Here we examine whether RTN inhibition by lung inflation could be mediated by a direct projection from SAR second-order neurons (pump cells).
Ana C, Takakura, Thiago S, Moreira, Gavin H, West, Justin M, Gwilt, Eduardo, Colombari, Ruth L, Stornetta, Patrice G, Guyenet   +6 more
openaire   +2 more sources

Polar Location of the Chemoreceptor Complex in the Escherichia coli Cell

Science, 1993
The eukaryotic cell exhibits compartmentalization of functions to various membrane-bound organelles and to specific domains within each membrane. The spatial distribution of the membrane chemoreceptors and associated cytoplasmic chemotaxis proteins in Escherichia coli were examined as a prototypic functional ...
J R, Maddock, L, Shapiro
openaire   +2 more sources

Peripheral Filters and Chemoreceptor Cells in Fishes

1988
Olfaction in vertebrates is the sense used in the processing of chemical information that is detected and transmitted to the central nervous system by bipolar neurons that compose the olfactory nerve (cranial nerve I). Gustation is the sense used in the processing of chemical information that is detected by taste cells and transmitted centrally by ...
openaire   +1 more source

Developmental changes in intracellular Ca2+ response of carotid chemoreceptor cells to hypoxia

American Journal of Physiology-Lung Cellular and Molecular Physiology, 1995
The carotid chemoreceptor response to hypoxia is weak just after birth and increases during postnatal development. The mechanisms underlying chemoreceptor maturation are unknown. We tested the hypothesis that carotid chemoreceptor maturation occurs at the glomus cell level by measuring intracellular calcium ([Ca2+]i) mobilization in response to ...
L M, Sterni, O S, Bamford, S M, Tomares, M H, Montrose, J L, Carroll   +4 more
openaire   +2 more sources

Hypoxic Ventilatory Depression May be Due to Central Chemoreceptor Cell Hyperpolarization

1995
By re-examining the results of various studies of HVD, of the localization of medullary CO2 chemosensory cells, and of their acid secretion, an hypothesis has been developed suggesting that the neurones which detect increased CO2 or CSF acid respond to decreased transmembrane H+ gradient, i.e. a greater fall in ECF than in ICF pH.
openaire   +2 more sources

Coexpression of Galanin and Nestin in the Chemoreceptor Cells of the Human Carotid Body.

Advances in Experimental Medicine and Biology, 2016
A. Mazzatenta, G. Marconi, V. Macchi, A. Porzionato, A. Cataldi, C. Di Giulio, M. Pokorski   +6 more
semanticscholar   +1 more source