Now showing items 1-10 of 11
Secretory responses of intact glomus cells in thin slices of rat carotid body to hypoxia and tetraethylammonium
We have developed a thin-slice preparation of whole rat carotid body that allows us to perform patch-clamp recording of membrane ionic currents and to monitor catecholamine secretion by amperometry in single glomus cells ...
Collapse of conductance Is prevented by a Glutamate residue conserved in voltage-dependent K+ channels
Voltage-dependent K 1 channel gating is influenced by the permeating ions. Extracellular K 1 determines the occupation of sites in the channels where the cation interferes with the motion of the gates. When external [K 1] ...
Trophic restoration of the nigrostriatal dopaminergic pathway in long-term carotid body-grafted parkinsonian rats
We studied the mechanisms underlying long-term functional recovery of hemiparkinsonian rats grafted intrastriatally with carotid body (CB) cell aggregates. Amelioration of their motor syndrome is a result of the trophic ...
Rotenone selectively occludes sensitivity to hypoxia in rat carotid body glomus cells
(Wiley-Blackwell Publishing Ltd., 2003)
Carotid body glomus cells release transmitters in response to hypoxia due to the increase of excitability resulting from inhibition of O2 -regulated K+ channels. However, the mechanisms involved in the detection of changes ...
Physiological Plasticity of Neural-Crest-Derived Stem Cells in the Adult Mammalian Carotid Body
(Cell Press, 2017)
Adult stem cell plasticity, or the ability of somatic stem cells to cross boundaries and differentiate into unrelated cell types, has been amatter of debate in the last decade. Neural-crest-derived stem cells (NCSCs) ...
An O-2-sensitive glomus cell-stem cell synapse induces carotid body growth in chronic hipoxia
(CELL PRESS, 2014-01-16)
Neural stem cells (NSCs) exist in germinal centers of the adult brain and in the carotid body (CB), an oxygen-sensing organ that grows under chronic hypoxemia. How stem cell lineage differentiation into mature glomus cells ...
Resistance of subventricular neural stem cells to chronic hypoxemia despite structural disorganization of the germinal center and impairment of neuronal and oligodendrocyte survival
(Dove Medical Press Ltd., 2015)
Chronic hypoxemia, as evidenced in de-acclimatized high-altitude residents or in patients with chronic obstructive respiratory disorders, is a common medical condition that can produce serious neurological alterations. ...
Gene expression profiling supports the neural crest origin of adult rodent carotid body stem cells and identifies CD10 as a marker for mesectoderm-committed progenitors
Neural stem cells (NSCs) are promising tools for understanding nervous system plasticity and repair, but their use is hampered by the lack of markers suitable for their prospective isolation and characterization. The carotid ...
Carotid body oxygen sensing and adaptation to hipoxia
The carotid body (CB) is the principal arterial chemoreceptor that mediates the hyperventilatory response to hypoxia. Our understanding of CB function and its role in disease mechanisms has progressed considerably in the ...