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Trilostane
Trilostane, sold under the brand name Vetoryl among others, is a medication which has been used in the treatment of Cushing's syndrome, Conn's syndrome, and postmenopausal breast cancer in humans. It was withdrawn for use in humans in the United States in the 1990s but was subsequently approved for use in veterinary medicine in the 2000s to treat Cushing's syndrome in dogs. It is taken by mouth.
Trilostane has been used in the treatment of Cushing's syndrome (hypercortisolism), Conn's syndrome (hyperaldosteronism), and postmenopausal breast cancer in humans. When used to treat breast cancer, trilostane is administered in combination with a corticosteroid to prevent glucocorticoid deficiency.
Trilostane should not be used in pregnant women.
Trilostane should not be given to a dog that:
Side effects of trilostane in conjunction with a corticosteroid in humans include gastrointestinal side effects like gastritis, nausea, vomiting, and diarrhea. Nonsteroidal antiinflammatory drugs (NSAIDs) may decrease the incidence of diarrhea with trilostane. Serious gastrointestinal side effects of trilostane alone or in combination with an NSAID like peptic ulcer, erosive gastritis, gastric perforation, hematemesis, and melena may occur in some individuals. Reversible granulocytopenia and transient oral paresthesia may occur with trilostane.
Trilostane is a steroidogenesis inhibitor. It is specifically an inhibitor of 3β-hydroxysteroid dehydrogenase (3β-HSD). As a result of this action, trilostane blocks the conversion of Δ5-3β-hydroxysteroids, including pregnenolone, 17α-hydroxypregnenolone, dehydroepiandrosterone (DHEA), and androstenediol, into Δ4-3-ketosteroids, including progesterone, 17α-hydroxyprogesterone, androstenedione, and testosterone, respectively. Consequently, trilostane inhibits the production of all classes of steroid hormones, including androgens, estrogens, progestogens, glucocorticoids, and mineralocorticoids.
The mechanism of action of trilostane in Cushing's syndrome and Conn's syndrome is by inhibiting the production of corticosteroids such as cortisol and aldosterone in the adrenal glands. Trilostane has also been used as an abortifacient due to its inhibition of progesterone synthesis.
Trilostane is not an aromatase inhibitor and hence does not inhibit the conversion of androgens like androstenedione and testosterone into estrogens like estrone and estradiol. However, trilostane may nonetheless inhibit estrogen synthesis by inhibiting androgen synthesis.
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Trilostane
Trilostane, sold under the brand name Vetoryl among others, is a medication which has been used in the treatment of Cushing's syndrome, Conn's syndrome, and postmenopausal breast cancer in humans. It was withdrawn for use in humans in the United States in the 1990s but was subsequently approved for use in veterinary medicine in the 2000s to treat Cushing's syndrome in dogs. It is taken by mouth.
Trilostane has been used in the treatment of Cushing's syndrome (hypercortisolism), Conn's syndrome (hyperaldosteronism), and postmenopausal breast cancer in humans. When used to treat breast cancer, trilostane is administered in combination with a corticosteroid to prevent glucocorticoid deficiency.
Trilostane should not be used in pregnant women.
Trilostane should not be given to a dog that:
Side effects of trilostane in conjunction with a corticosteroid in humans include gastrointestinal side effects like gastritis, nausea, vomiting, and diarrhea. Nonsteroidal antiinflammatory drugs (NSAIDs) may decrease the incidence of diarrhea with trilostane. Serious gastrointestinal side effects of trilostane alone or in combination with an NSAID like peptic ulcer, erosive gastritis, gastric perforation, hematemesis, and melena may occur in some individuals. Reversible granulocytopenia and transient oral paresthesia may occur with trilostane.
Trilostane is a steroidogenesis inhibitor. It is specifically an inhibitor of 3β-hydroxysteroid dehydrogenase (3β-HSD). As a result of this action, trilostane blocks the conversion of Δ5-3β-hydroxysteroids, including pregnenolone, 17α-hydroxypregnenolone, dehydroepiandrosterone (DHEA), and androstenediol, into Δ4-3-ketosteroids, including progesterone, 17α-hydroxyprogesterone, androstenedione, and testosterone, respectively. Consequently, trilostane inhibits the production of all classes of steroid hormones, including androgens, estrogens, progestogens, glucocorticoids, and mineralocorticoids.
The mechanism of action of trilostane in Cushing's syndrome and Conn's syndrome is by inhibiting the production of corticosteroids such as cortisol and aldosterone in the adrenal glands. Trilostane has also been used as an abortifacient due to its inhibition of progesterone synthesis.
Trilostane is not an aromatase inhibitor and hence does not inhibit the conversion of androgens like androstenedione and testosterone into estrogens like estrone and estradiol. However, trilostane may nonetheless inhibit estrogen synthesis by inhibiting androgen synthesis.