Bosentan
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| Systematic (IUPAC) name | |
|---|---|
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4-tert-butyl-N-[6-(2-hydroxyethoxy)-5-(2-methoxyphenoxy)-2-(pyrimidin-2-yl)pyrimidin-4-yl]benzene-1-sulfonamide
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| Clinical data | |
| Trade names | Tracleer |
| AHFS/Drugs.com | monograph |
| MedlinePlus | a605001 |
| Pregnancy category |
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| Legal status |
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| Routes of administration |
Oral |
| Pharmacokinetic data | |
| Bioavailability | 50% |
| Protein binding | >98% |
| Metabolism | Hepatic |
| Biological half-life | 5 hours |
| Identifiers | |
| CAS Number | 147536-97-8  |
| ATC code | C02KX01 (WHO) |
| PubChem | CID: 104865 |
| IUPHAR/BPS | 3494 |
| DrugBank | DB00559 |
| ChemSpider | 94651 |
| UNII | XUL93R30K2 |
| KEGG | D01227  |
| ChEBI | CHEBI:51450 |
| ChEMBL | CHEMBL957 |
| Chemical data | |
| Formula | C27H29N5O6S |
| Molecular mass | 551.614 g/mol |
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Bosentan is a dual endothelin receptor antagonist used in the treatment of pulmonary artery hypertension (PAH). It is licensed in the United States, the European Union and other countries by Actelion Pharmaceuticals for the management of PAH under the trade name Tracleer.
Mechanism of action
Bosentan is a competitive antagonist of endothelin-1 at the endothelin-A (ET-A) and endothelin-B (ET-B) receptors. Under normal conditions, endothelin-1 binding of ET-A or ET-B receptors causes constriction of the pulmonary blood vessels. By blocking this interaction, bosentan decreases pulmonary vascular resistance. Bosentan has a slightly higher affinity for ET-A than ET-B.[1]
Clinical uses
Bosentan is indicated mainly for the treatment of pulmonary hypertension. In 2007, Bosentan was also approved in the European Union for reducing the number of new digital ulcers in patients with systemic sclerosis and ongoing digital ulcer disease.[citation needed]
In the United States, Bosentan is indicated for the treatment of pulmonary arterial hypertension (WHO Group I) in patients with WHO Class II-IV symptoms, to improve exercise capacity and decrease the rate of clinical worsening.[2]
Warnings
Due to potential hepatotoxicity, the FDA requires monthly monitoring of liver function tests while taking Bosentan.
Bosentan use requires hematocrit monitoring due to potential onset of anemia.[3]
Hormone-based contraception is not possible in women taking Bosentan, due to a pharmacokinetic interaction.[4] Therefore, other highly reliable forms of contraception should be used instead.
Bosentan is contraindicated in pregnancy because of its teratogenicity (Pregnancy Category X). [5] [6]
See also
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ http://www.tracleer.com/pdf/09%20276%2001%2000%200809_Tra%20PI_4%20Pg_081409pdf.pdf
- ↑ http://www.ionchannels.org/showabstract.php?pmid=15875338
- ↑ http://www.ionchannels.org/showabstract.php?pmid=15875338
- ↑ http://www.medicinescomplete.com/mc/bnf/current/PHP1044-bosentan.htm?q=bosentan&t=search&ss=text&p=1#_hit
- ↑ http://www.nzf.org.nz/nzf_1183.html
