Abstract
Endothelin-1 (ET-1) is a potent vasoconstrictor and mitogen that is secreted by the endothelium. Pulmonary vascular expression of endothelin is increased in pulmonary hypertension and plasma levels correlate with the severity of disease. Several endothelin receptor antagonists (ERAs) have been developed and are available for the treatment of pulmonary arterial hypertension (PAH). These drugs have been shown to be effective at improving functional capacity, decreasing pulmonary vascular resistance and delaying the time to clinical worsening and play an important role in the management of PAH. This chapter briefly reviews how the endothelin signaling pathway modulates pulmonary vascular function and describes its role in the pathogenesis of PAH. The major clinical trials responsible for the currently available ERAs are presented along with their findings and limitations. Recently, adopted treatment guidelines for the use of ERAs in the treatment of pulmonary hypertensive disease are discussed along with potential side effects and adverse reactions associated with the use of these drugs.
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Abbreviations
- 6MWD:
-
6-min Walk distance
- CTEPH:
-
Chronic thromboembolic pulmonary hypertension
- ERA:
-
Endothelin receptor antagonist
- ET-1:
-
Endothelin-1
- ET-2:
-
Endothelin-2
- ET-3:
-
Endothelin-3
- ETA :
-
Endothelin receptor A
- ETB :
-
Endothelin receptor B
- IPAH:
-
Idiopathic pulmonary arterial hypertension
- mPAP:
-
Mean pulmonary artery pressure
- NO:
-
Nitric oxide
- PAH:
-
Pulmonary arterial hypertension
- PPET-1:
-
Preproendothelin
- PVR:
-
Pulmonary vascular resistance
- TPR:
-
Total pulmonary resistance
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Rodriguez-Lopez, J., Channick, R.N. (2015). Endothelin Receptor Antagonists. In: Klinger, J., Frantz, R. (eds) Diagnosis and Management of Pulmonary Hypertension. Respiratory Medicine, vol 12. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-2636-7_14
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DOI: https://doi.org/10.1007/978-1-4939-2636-7_14
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