Ion channel regulation by chronic hypoxia in models of acute oxygen sensing

Peers, Chris and Kemp, Paul J. ORCID: https://orcid.org/0000-0003-2773-973X 2004. Ion channel regulation by chronic hypoxia in models of acute oxygen sensing. Cell Calcium 36 (3-4) , pp. 341-348. 10.1016/j.ceca.2004.02.005

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Abstract

Several potentially life-threatening cardiovascular and respiratory disorders result in prolonged deprivation of oxygen, which in turn results in significant cellular adaptation, or remodelling. An important component of this functional adaptation arises as a direct consequence of altered ion channel expression by chronic hypoxia. In this review, we discuss current understanding of this hypoxic remodelling process, with particular reference to regulation of L-type Ca2+ channels and high-conductance, Ca2+-sensitive K+ (BK) channels. In systems where this remodelling occurs, changes in functional expression of these particular channels evokes marked alteration in, or responses to, Ca2+-dependent events. Evidence to date indicates that channel expression can be modulated at the transcriptional level but, additionally, that crucial post-transcriptional events are also regulated by chronic hypoxia. Importantly, such remodelling is, in some cases, strongly associated with production of amyloid peptides of Alzheimer’s disease, implicating chronic hypoxia as a causative factor in the progression of specific pathology. Moreover, subtle changes in functional expression of BK channels implicates chronic hypoxia as an important regulator of cell excitability.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Biosciences
Publisher:	Elsevier
ISSN:	0143-4160
Last Modified:	27 Oct 2022 08:47
URI:	https://orca.cardiff.ac.uk/id/eprint/63410

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