The role of ion channels in hypoxic pulmonary vasoconstriction

E. Kenneth Weir; Jésus A. Cabrera; Saswati Mahapatra; Douglas A. Peterson; Zhigang Hong

doi:10.1007/978-1-60761-500-2_1

The role of ion channels in hypoxic pulmonary vasoconstriction

E. Kenneth Weir, Jésus A. Cabrera, Saswati Mahapatra, Douglas A. Peterson, Zhigang Hong

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

19 Scopus citations

Abstract

Hypoxic pulmonary vasoconstriction (HPV) is an important mechanism by which localized flow of blood in small resistance pulmonary arteries is matched to alveolar ventilation. This chapter discusses the role of several potassium and calcium channels in HPV, both in enhancing calcium influx into smooth muscle cells (SMCs) and in stimulating the release of calcium from the sarcoplasmic reticulum, thus increasing cytosolic calcium. The increase in calcium sensitivity caused by hypoxia is reviewed in Chapter 19. Particular attention is paid to the activity of the L-type calcium channels which increase calcium influx as a result of membrane depolarization and also increase calcium influx at any given membrane potential in response to hypoxia. In addition, activation of the L-type calcium channel may, in the absence of any calcium influx, cause calcium release from the sarcoplasmic reticulum. Many of these mechanisms have been reported to be involved in both HPV and in normoxic contraction of the ductus arteriosus.

Original language	English (US)
Title of host publication	Membrane Receptors, Channels and Transporters in Pulmonary Circulation
Editors	J.X.J Yuan, J.P.T. Ward
Pages	3-14
Number of pages	12
DOIs	https://doi.org/10.1007/978-1-60761-500-2_1
State	Published - 2010

Publication series

Name	Advances in Experimental Medicine and Biology
Volume	661
ISSN (Print)	0065-2598

Bibliographical note

Funding Information:
The work is supported by NIH RO1 HL 65322 (E.K.W).

Keywords

Ductus arteriosus
Hypoxia
L-type calcium channels
Resistance pulmonary arteries
Sarcoplasmic reticulum
Store-operated channels
Voltagegated potassium channels

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Weir, E. K., Cabrera, J. A., Mahapatra, S., Peterson, D. A., & Hong, Z. (2010). The role of ion channels in hypoxic pulmonary vasoconstriction. In J. X. J. Yuan, & J. P. T. Ward (Eds.), Membrane Receptors, Channels and Transporters in Pulmonary Circulation (pp. 3-14). (Advances in Experimental Medicine and Biology; Vol. 661). https://doi.org/10.1007/978-1-60761-500-2_1

The role of ion channels in hypoxic pulmonary vasoconstriction. / Weir, E. Kenneth; Cabrera, Jésus A.; Mahapatra, Saswati et al.
Membrane Receptors, Channels and Transporters in Pulmonary Circulation. ed. / J.X.J Yuan; J.P.T. Ward. 2010. p. 3-14 (Advances in Experimental Medicine and Biology; Vol. 661).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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abstract = "Hypoxic pulmonary vasoconstriction (HPV) is an important mechanism by which localized flow of blood in small resistance pulmonary arteries is matched to alveolar ventilation. This chapter discusses the role of several potassium and calcium channels in HPV, both in enhancing calcium influx into smooth muscle cells (SMCs) and in stimulating the release of calcium from the sarcoplasmic reticulum, thus increasing cytosolic calcium. The increase in calcium sensitivity caused by hypoxia is reviewed in Chapter 19. Particular attention is paid to the activity of the L-type calcium channels which increase calcium influx as a result of membrane depolarization and also increase calcium influx at any given membrane potential in response to hypoxia. In addition, activation of the L-type calcium channel may, in the absence of any calcium influx, cause calcium release from the sarcoplasmic reticulum. Many of these mechanisms have been reported to be involved in both HPV and in normoxic contraction of the ductus arteriosus.",

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The role of ion channels in hypoxic pulmonary vasoconstriction

Abstract

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Keywords

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