Digitoxin

CAS No:
71-63-6 Category:
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Product Details:

  • CAS No: 71-63-6
  • AHFC code: 92:02.00*
  • Synonyms: Digitoksin Digitoxinum Digitoxoside
  • ATC Code: C01AA01 C01AA04
  • Chemical Formula: C21H30O2
  • Molecular Weight: 764.9391
  • Assay/Purity: Typically NLT 98%
  • DrugBank: DB01396
  • SMILES: C[C,H]1O[C,H](C[C,H](O)[C,,H]1O)O[C,H]1[C,,H](O)C[C,H](O[C,H]2[C,,H](O)C[C,H](O[C,H]3CC[C,,]4(C)[C,H](CC[C,,H]5[C,,H]4CC[C,]4(C)[C,H](CC[C,]54O)C4=CC(=O)OC4)C3)O[C,,H]2C)O[C,,H]1C
  • InChl: WDJUZGPOPHTGOT-XUDUSOBPSA-N
  • PubChem: 11968425
  • IUPAC:

Additional Details

Indication:
For the treatment and management of congestive cardiac insufficiency, arrhythmias and heart failure.
Pharmacodynamics:
Digitoxin is a cardiac glycoside sometimes used in place of DIGOXIN. It has a longer half-life than digoxin; toxic effects, which are similar to those of digoxin, are longer lasting (From Martindale, The Extra Pharmacopoeia, 30th ed, p665). Unlike digoxin (which is eliminated from the body via the kidneys), it is eliminated via the liver, so could be used in patients with poor or erratic kidney function. However, it is now rarely used in current UK medical practice. While there have been several controlled trials which have shown digoxin to be effective in a proportion of patients treated for heart failure, there is not the same strong evidence base for digitoxin, although it is presumed to be similarly effective.
Mode of Action:
Digitoxin inhibits the Na-K-ATPase membrane pump, resulting in an increase in intracellular sodium and calcium concentrations. Increased intracellular concentrations of calcium may promote activation of contractile proteins (e.g., actin, myosin). Digitoxin also acts on the electrical activity of the heart, increasing the slope of phase 4 depolarization, shortening the action potential duration, and decreasing the maximal diastolic potential.
Metabolism:
Hepatic.
Toxicity:
Digitoxin exhibits similar toxic effects to the more-commonly used digoxin, namely: anorexia, nausea, vomiting, diarrhoea, confusion, visual disturbances, and cardiac arrhythmias.
General Reference:
Belz GG, Breithaupt-Grogler K, Osowski U: Treatment of congestive heart failureãcurrent status of use of digitoxin. Eur J Clin Invest. 2001;31 Suppl 2:10-7. Pubmed Kurowski V, Iven H, Djonlagic H: Treatment of a patient with severe digitoxin intoxication by Fab fragments of anti-digitalis antibodies. Intensive Care Med. 1992;18(7):439-42. Pubmed Johansson S, Lindholm P, Gullbo J, Larsson R, Bohlin L, Claeson P: Cytotoxicity of digitoxin and related cardiac glycosides in human tumor cells. Anticancer Drugs. 2001 Jun;12(5):475-83. Pubmed Hippius M, Humaid B, Sicker T, Hoffmann A, Gottler M, Hasford J: Adverse drug reaction monitoringãdigitoxin overdosage in the elderly. Int J Clin Pharmacol Ther. 2001 Aug;39(8):336-43. Pubmed
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