Testolactone: Difference between revisions

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==Overview==
==Overview==

Revision as of 12:16, 24 February 2015

Testolactone
Clinical data
Routes of
administration		Oral
Pharmacokinetic data
Protein binding~85%
MetabolismHepatic
ExcretionRenal
Identifiers
CAS Number
PubChem CID
DrugBank
E number{{#property:P628}}
ECHA InfoCard{{#property:P2566}}Lua error in Module:EditAtWikidata at line 36: attempt to index field 'wikibase' (a nil value).
Chemical and physical data
FormulaC19H24O3
Molar mass300.39 g/mol
3D model (JSmol)

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]

Overview

Testolactone, or Teslac (brand name) is an antineoplastic agent that is a derivative of progesterone and is used to treat advanced stage breast cancer.[1]

Pharmacology

Testolactone is a synthetic antineoplastic agent that is structurally distinct from the androgen steroid nucleus in possessing a six-membered lactone ring in place of the usual five-membered carbocyclic D-ring. Despite some similarity to testosterone, testolactone has no in vivo androgenic effect. No other hormonal effects have been reported in clinical studies in patients receiving testolactone.[2]

Mechanism of Action

The principal action of testolactone is reported to be inhibition of steroid aromatase activity and the reduction in estrone synthesis that fallows. Androstenedione, a 19-carbon steroid hormone produced in the adrenal glands and the gonads, is where estrone synthesis originates and is the source of estrogen in postmenopausal women. In vitro studies report that the aromatase inhibition may be noncompetitive and irreversible, and could possibly account for the persistence of this drug's effect on estrogen synthesis after drug withdrawal.[3]

Uses

This drug is mainly used for treating various types of breast cancer in women who have been through menopause or whose ovaries no longer function.[4] It works by blocking the production of estrogen, which helps prevent the growth of breast cancers that are activated by estrogen. It may also prevent tumor cells from being activated by other hormones.[5]

Side effects

The most COMMON side effects include:

  • Abnormal skin sensations
  • Aches of the legs and arms
  • General body discomfort
  • Hair loss
  • Loss of appetite
  • Nausea
  • Redness of the tongue
  • Vomiting


References

  1. ↑ Testolactone at DrugBank.ca
  2. ↑ [1] at DrugBank.ca
  3. ↑ DrugBank: DB00894 (Testolactone)
  4. ↑ Testolactone facts and comparsions at Drugs.com
  5. ↑ ibid.

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