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Updated: Apr 10, 2026

Isolation of Pulmonary Artery Smooth Muscle Cells from Neonatal Mice
Published on: October 19, 2013
Na(+)/H(+) exchange and hypoxic pulmonary hypertension
John Huetsch1, Larissa A Shimoda1
1Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21224, USA.
Sodium-hydrogen exchange (NHE) regulates intracellular pH in pulmonary artery smooth muscle cells (PASMCs). This review explores NHE's role in PASMC function and its therapeutic potential for treating pulmonary hypertension.
Area of Science:
- Physiology
- Cell Biology
- Cardiovascular Research
Background:
- Intracellular pH (pHi) homeostasis is crucial for vascular smooth muscle cell function.
- Sodium-hydrogen exchange (NHE) significantly contributes to pHi regulation in pulmonary artery smooth muscle cells (PASMCs).
Purpose of the Study:
- To review the role of NHE in PASMC function under both physiological and pathological conditions.
- To examine NHE's specific contribution to the PASMC response to hypoxia, including acute hypoxic pulmonary vasoconstriction and chronic hypoxia-induced pulmonary hypertension.
Main Methods:
- Literature review focusing on the function of NHE in PASMCs.
- Analysis of NHE's involvement in hypoxic pulmonary hypertension development and progression.
Main Results:
- NHE plays a critical role in mediating PASMC responses to hypoxia.
- Dysregulation of NHE contributes to pulmonary vascular remodeling and the development of pulmonary hypertension.
Conclusions:
- NHE signaling is a key factor in hypoxic pulmonary hypertension.
- Targeting NHE represents a potential therapeutic strategy for pulmonary hypertension, a condition with limited treatment options.
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