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Ion channels regulating pulmonary vascular tone
Pulmonary hypertension, or raised blood pressure in the lungs, is a disease with poor prognosis. It is associated with constriction and remodelling of the small arteries within the lung.
As the diameter of small arteries is crucial to determining the resistance to blood flow and blood pressure, we are interested in identifying mechanisms that regulate the diameter of pulmonary arteries and can potentially be targetted by drugs acting to lower pulmonary arterial pressure.
We have a particular interest in the ion channels found in the plasma membranes of pulmonary artery smooth muscle cells. Our work investigates the physiological roles and pharmacology of specific ion channels in these cells. We take an interdisciplinary approach to investigating ion channel expression and function, using small-vessel wire myography to investigate constriction in intact vessels, electrophysiology to study the biophysics and pharmacology of ionic currents carried through the channels, fluorescent Ca2+ imaging to link channel activity and contraction to the regulation of Ca2+ signalling and molecular techniques to study and manipulate the expression of particualr channels.
Past contributions to the field include the:
discovery of KATP channels and the two-pore domain channel, TASK-1, as regulators of smooth muscle membrane potential and pulmonary artery tone
identification of IP3-induced Ca2+ release as the site of action of the vasodilator, hydralazine
demonstration that potassium channel expression is modulated in pulmonary hypertension and following birth, when the pulmonary circulation begins to function in gas exchange
identification of mitochondrial Ca2+ signalling during agonist activation of vascular myocytes.
identification and characterisation of store-operated Ca2+ channels in pulmonary artery myocytes
discovery of an oxygen-sensing, non-inactivating K+ current that regulates the membrane potential of pulmonary artery smooth muscle
discovery of potent pulmonary vascular actions of KCNQ (Kv7) potassium channel modulators.
Ion channels regulating pulmonary vascular tone
Pulmonary hypertension, or raised blood pressure in the lungs, is a disease with poor prognosis. It is associated with constriction and remodelling of the small arteries within the lung.
As the diameter of small arteries is crucial to determining the resistance to blood flow and blood pressure, we are interested in identifying mechanisms that regulate the diameter of pulmonary arteries and can potentially be targetted by drugs acting to lower pulmonary arterial pressure.
We have a particular interest in the ion channels found in the plasma membranes of pulmonary artery smooth muscle cells. Our work investigates the physiological roles and pharmacology of specific ion channels in these cells. We take an interdisciplinary approach to investigating ion channel expression and function, using small-vessel wire myography to investigate constriction in intact vessels, electrophysiology to study the biophysics and pharmacology of ionic currents carried through the channels, fluorescent Ca2+ imaging to link channel activity and contraction to the regulation of Ca2+ signalling and molecular techniques to study and manipulate the expression of particualr channels.
Past contributions to the field include the:
discovery of KATP channels and the two-pore domain channel, TASK-1, as regulators of smooth muscle membrane potential and pulmonary artery tone
identification of IP3-induced Ca2+ release as the site of action of the vasodilator, hydralazine
demonstration that potassium channel expression is modulated in pulmonary hypertension and following birth, when the pulmonary circulation begins to function in gas exchange
identification of mitochondrial Ca2+ signalling during agonist activation of vascular myocytes.
identification and characterisation of store-operated Ca2+ channels in pulmonary artery myocytes
discovery of an oxygen-sensing, non-inactivating K+ current that regulates the membrane potential of pulmonary artery smooth muscle
discovery of potent pulmonary vascular actions of KCNQ (Kv7) potassium channel modulators.
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Filipa M. Lopes,Celine Grenier,Benjamin W. Jarvis, Sara Al Mahdy, Adrian Lène-McKay,Alison M. Gurney,William G. Newman,Simon N. Waddington,Adrian S. Woolf,Neil A. Roberts
eLife (2024)
Kidney International Reportsno. 7 (2023): 1417-1429
Philosophical transactions - Royal Society Biological sciencesno. 1879 (2023)
BRITISH JOURNAL OF PHARMACOLOGYno. 4 (2023): 527-528
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medRxiv (Cold Spring Harbor Laboratory) (2022)
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#Papers: 72
#Citation: 2457
H-Index: 26
G-Index: 49
Sociability: 5
Diversity: 0
Activity: 0
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