Cabergoline

Last updated
Cabergoline
Cabergoline.svg
Clinical data
Trade names Dostinex, others
AHFS/Drugs.com Monograph
License data
Routes of
administration 		By mouth
ATC code
Legal status
Legal status
Pharmacokinetic data
Bioavailability First-pass effect seen; absolute bioavailability unknown
Protein binding Moderately bound (40–42%); concentration-independent
Metabolism Liver, predominately via hydrolysis of the acylurea bond or the urea moiety
Elimination half-life 63–69 hours (estimated)
Excretion Urine (22%), feces (60%)
Identifiers
  • (6aR,9R,10aR)-N-[3-(dimethylamino)propyl]-N-(ethylcarbamoyl)-7-prop-2-enyl-6,6a,8,9,10,10a-hexahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard 100.155.380 OOjs UI icon edit-ltr-progressive.svg
Chemical and physical data
Formula C26H37N5O2
Molar mass 451.615 g·mol−1
3D model (JSmol)
  • [H][C@]12C[C@@H](C(=O)N(CCCN(C)C)C(=O)NCC)CN(CC=C)[C@]1([H])Cc3c[nH]c4cccc2c34
  • InChI=1S/C26H37N5O2/c1-5-11-30-17-19(25(32)31(26(33)27-6-2)13-8-12-29(3)4)14-21-20-9-7-10-22-24(20)18(16-28-22)15-23(21)30/h5,7,9-10,16,19,21,23,28H,1,6,8,11-15,17H2,2-4H3,(H,27,33)/t19-,21-,23-/m1/s1 Yes check.svgY
  • Key:KORNTPPJEAJQIU-KJXAQDMKSA-N Yes check.svgY
 X mark.svgNYes check.svgY  (what is this?)    (verify)

Cabergoline, sold under the brand name Dostinex among others, is a dopaminergic medication used in the treatment of high prolactin levels, prolactinomas, Parkinson's disease, and for other indications. [1] It is taken by mouth.

Contents

Cabergoline is an ergot derivative and a potent dopamine D2 receptor agonist. [2]

Cabergoline was patented in 1980 and approved for medical use in 1993. [3] It is on the World Health Organization's List of Essential Medicines. [4]

Medical uses

Cabergoline is frequently used as a first-line agent in the management of prolactinomas due to its higher affinity for D2 receptor sites, less severe side effects, and more convenient dosing schedule than the older bromocriptine, though in pregnancy bromocriptine is often still chosen since there is less data on safety in pregnancy for cabergoline.

Off-label

Cabergoline has at times been used as an adjunct to SSRI antidepressants as there is some evidence that it counteracts certain side effects of those drugs, such as reduced libido and anorgasmia. It also has been suggested that it has a possible recreational use in reducing or eliminating the male refractory period, thereby allowing men to experience multiple ejaculatory orgasms in rapid succession, and at least two scientific studies support those speculations. [8] [9] : e28–e33  Additionally, a systematic review and meta-analysis concluded that prophylactic treatment with cabergoline reduces the incidence, but not the severity, of ovarian hyperstimulation syndrome (OHSS), without compromising pregnancy outcomes, in females undergoing stimulated cycles of in vitro fertilization (IVF). [10] Also, a study on rats found that cabergoline reduces voluntary alcohol consumption, possibly by increasing GDNF expression in the ventral tegmental area. [11] It may be used in the treatment of restless legs syndrome.[ citation needed ]

Pregnancy and lactation

Relatively little is known about the effects of this medication during pregnancy and lactation. In some cases the related bromocriptine may be an alternative when pregnancy is expected.[ citation needed ]

Contraindications

Side effects

Side effects are mostly dose dependent. Much more severe side effects are reported for treatment of Parkinson's disease and (off-label treatment) for restless leg syndrome which both typically require very high doses. The side effects are considered mild when used for treatment of hyperprolactinemia and other endocrine disorders or gynecologic indications where the typical dose is one hundredth to one tenth that for Parkinson's disease.[ citation needed ]

Cabergoline requires slow dose titration (2–4 weeks for hyperprolactinemia, often much longer for other conditions) to minimize side effects. The extremely long bioavailability of the medication may complicate dosing regimens during titration and require particular precautions.

Cabergoline is considered the best tolerable option for hyperprolactinemia treatment although the newer and less tested quinagolide may offer similarly favourable side effect profile with quicker titration times.

Approximately 200 patients with newly diagnosed Parkinson's disease participated in a clinical study of cabergoline monotherapy. [13] Seventy-six (76) percent reported at least one side effect. These side effects were chiefly mild or moderate:

In a combination study with 2,000 patients also treated with levodopa, the incidence and severity of side effects was comparable to monotherapy. Encountered side effects required a termination of cabergoline treatment in 15% of patients. Additional side effects were infrequent cases of hematological side effects, and an occasional increase in liver enzymes or serum creatinine without signs or symptoms.

As with other ergot derivatives, pleuritis, exudative pleura disease, pleura fibrosis, lung fibrosis, and pericarditis are seen. These side effects are noted in less than 2% of patients. They require immediate termination of treatment. Clinical improvement and normalization of X-ray findings are normally seen soon after cabergoline withdrawal. It appears that the dose typically used for treatment of hyperprolactinemia is too low to cause this type of side effects.

Valvular heart disease

In two studies published in the New England Journal of Medicine on January 4, 2007, cabergoline was implicated along with pergolide in causing valvular heart disease. [14] [15] As a result of this, the FDA removed pergolide from the U.S. market on March 29, 2007. [16] Since cabergoline is not approved in the U.S. for Parkinson's Disease, but for hyperprolactinemia, the drug remains on the market. The lower doses required for treatment of hyperprolactinemia have been found to be not associated with clinically significant valvular heart disease or cardiac valve regurgitation. [17] [18]

Interactions

No interactions were noted with levodopa or selegiline. The drug should not be combined with other ergot derivatives. Dopamine antagonists such as antipsychotics and metoclopramide counteract some effects of cabergoline. The use of antihypertensive drugs should be intensively monitored because excessive hypotension may result from the combination.

Pharmacology

Pharmacodynamics

Activities of cabergoline at various sites
SiteAffinity
(Ki [nM])		Efficacy
(Emax [%])		Action
D1 214–32,000 ? ?
D2S 0.5–0.62102Full agonist
D2L 0.9575Partial agonist
D3 0.80–1.086Partial agonist
D4 5649Partial agonist
D5 22 ? ?
5-HT1A 1.9–2093Partial agonist
5-HT1B 479102Full agonist
5-HT1D 8.768Partial agonist
5-HT2A 4.6–6.294Partial agonist
5-HT2B 1.2–9.4123Full agonist
5-HT2C 5.8–69296Partial agonist
5-HT3 >10,000––
5-HT4 3,000 ? ?
5-HT6 1,300 ? ?
5-HT7 2.5 ?Antagonist
α1A 288–>10,0000Silent antagonist
α1B 60–1,000 ? ?
α1D 166 ? ?
α2A 12–1320Silent antagonist
α2B 17–720Silent antagonist
α2C 22–3640Silent antagonist
α2D 3.6 ? ?
H1 1,380 ? ?
M1 >10,000––
SERT >10,000––
Notes: All sites are human except α2D-adrenergic, which is rat (no human counterpart). [19] Negligible affinity (>10,000 nM) for various other receptors (β1- and β2-adrenergic, adenosine, GABA, glutamate, glycine, nicotinic acetylcholine, opioid, prostanoid). [20] Sources: [19] [21] [22] [20] [23]

Cabergoline is a long-acting dopamine D2 receptor agonist. In-vitro rat studies show a direct inhibitory effect of cabergoline on the prolactin secretion in the lactotroph cells of the pituitary gland and cabergoline decreases serum prolactin levels in reserpinized rats.[ citation needed ] Although cabergoline is commonly described principally as a D2 receptor agonist, it also possesses significant affinity for the dopamine D3, and D4, serotonin 5-HT1A, 5-HT2A, 5-HT2B, and 5-HT2C, and α2-adrenergic receptors, as well as moderate/low affinity for the dopamine D1, serotonin 5-HT7, and α1-adrenergic receptors. [19] [20] [24] Cabergoline functions as an partial or full agonist at all of these receptors except for the 5-HT7, α1-adrenergic, and α2-adrenergic receptors, where it acts as an antagonist. [21] [22] [20] Cabergoline has been associated with cardiac valvulopathy due to activation of 5-HT2B receptors. [25]

Pharmacokinetics

Following a single oral dose, resorption of cabergoline from the gastrointestinal (GI) tract is highly variable, typically occurring within 0.5 to 4 hours. Ingestion with food does not alter its absorption rate. Human bioavailability has not been determined since the drug is intended for oral use only. In mice and rats the absolute bioavailability has been determined to be 30 and 63 percent, respectively. Cabergoline is rapidly and extensively metabolized in the liver and excreted in bile and to a lesser extent in urine. All metabolites are less active than the parental drug or inactive altogether. The human elimination half-life is estimated to be 63 to 68 hours in patients with Parkinson's disease and 79 to 115 hours in patients with pituitary tumors. Average elimination half-life is 80 hours.

History

Cabergoline was first synthesized by scientists working for the Italian drug company Farmitalia-Carlo Erba in Milan who were experimenting with semisynthetic derivatives of the ergot alkaloids, and a patent application was filed in 1980. [26] [27] [28] The first publication was a scientific abstract at the Society for Neuroscience meeting in 1991. [29] [30]

Farmitalia-Carlo Erba was acquired by Pharmacia in 1993, [31] which in turn was acquired by Pfizer in 2003. [32]

Cabergoline was first marketed in The Netherlands as Dostinex in 1992. [26] The drug was approved by the FDA on December 23, 1996. [33] It went generic in late 2005 following US patent expiration. [34]

Society and culture

Brand names

Brand names of cabergoline include Cabaser, Dostinex, Galastop (veterinary), and Kelactin (veterinary), among others. [35]

Research

Cabergoline was studied in one person with Cushing's disease, to lower adrenocorticotropic hormone (ACTH) levels and cause regression of ACTH-producing pituitary adenomas. [36]

Related Research Articles

<span class="mw-page-title-main">Hyperprolactinaemia</span> Medical condition

Hyperprolactinaemia is the presence of abnormally high levels of prolactin in the blood. Normal levels average to about 13 ng/mL in women, and 5 ng/mL in men, with an upper normal limit of serum prolactin levels being 15-25 ng/mL for both. When the fasting levels of prolactin in blood exceed this upper limit, hyperprolactinemia is indicated.

<span class="mw-page-title-main">Bromocriptine</span> Organic Chemical Compound

Bromocriptine, originally marketed as Parlodel and subsequently under many brand names, is an ergoline derivative and dopamine agonist that is used in the treatment of pituitary tumors, Parkinson's disease, hyperprolactinaemia, neuroleptic malignant syndrome, and, as an adjunct, type 2 diabetes.

<span class="mw-page-title-main">Pergolide</span> Chemical compound

Pergolide, sold under the brand name Permax and Prascend (veterinary) among others, is an ergoline-based dopamine receptor agonist used in some countries for the treatment of Parkinson's disease. Parkinson's disease is associated with reduced dopamine activity in the substantia nigra of the brain. Pergolide acts on many of the same receptors as dopamine to increase receptor activity.

<span class="mw-page-title-main">Ergoloid</span> Chemical compound

Ergoloid mesylates (USAN), co-dergocrine mesilate (BAN) or dihydroergotoxine mesylate, trade name Hydergine, is a mixture of the methanesulfonate salts of three dihydrogenated ergot alkaloids.

<span class="mw-page-title-main">Amoxapine</span> Tricyclic antidepressant medication

Amoxapine, sold under the brand name Asendin among others, is a tricyclic antidepressant (TCA). It is the N-demethylated metabolite of loxapine. Amoxapine first received marketing approval in the United States in 1980, approximately 10 to 20 years after most of the other TCAs were introduced in the United States.

<small>L</small>-DOPA Chemical compound

l-DOPA, also known as levodopa and l-3,4-dihydroxyphenylalanine, is made and used as part of the normal biology of some plants and animals, including humans. Humans, as well as a portion of the other animals that utilize l-DOPA, make it via biosynthesis from the amino acid l-tyrosine. l-DOPA is the precursor to the neurotransmitters dopamine, norepinephrine (noradrenaline), and epinephrine (adrenaline), which are collectively known as catecholamines. Furthermore, l-DOPA itself mediates neurotrophic factor release by the brain and CNS. In some plant families, l-DOPA is the central precursor of a biosynthetic pathway that produces a class of pigments called betalains. l-DOPA can be manufactured and in its pure form is sold as a psychoactive drug with the INN levodopa; trade names include Sinemet, Pharmacopa, Atamet, and Stalevo. As a drug, it is used in the clinical treatment of Parkinson's disease and dopamine-responsive dystonia.

<span class="mw-page-title-main">Domperidone</span> Peripheral D2 receptor antagonist

Domperidone, sold under the brand name Motilium among others, is a dopamine antagonist medication which is used to treat nausea and vomiting and certain gastrointestinal problems like gastroparesis. It raises the level of prolactin in the human body and is used to induce and promote breast milk production. It may be taken by mouth or rectally.

<span class="mw-page-title-main">Prolactinoma</span> Medical condition

A prolactinoma is a tumor (adenoma) of the pituitary gland that produces the hormone prolactin. It is the most common type of functioning pituitary tumor. Symptoms of prolactinoma are due to abnormally high levels of prolactin in the blood (hyperprolactinemia), or due to pressure of the tumor on surrounding tissues. Based on size, a prolactinoma can be classified as a microprolactinoma or a macroprolactinoma.

<span class="mw-page-title-main">Dopaminergic</span> Substance related to dopamine functions

Dopaminergic means "related to dopamine" (literally, "working on dopamine"), dopamine being a common neurotransmitter. Dopaminergic substances or actions increase dopamine-related activity in the brain. Dopaminergic brain pathways facilitate dopamine-related activity. For example, certain proteins such as the dopamine transporter (DAT), vesicular monoamine transporter 2 (VMAT2), and dopamine receptors can be classified as dopaminergic, and neurons that synthesize or contain dopamine and synapses with dopamine receptors in them may also be labeled as dopaminergic. Enzymes that regulate the biosynthesis or metabolism of dopamine such as aromatic L-amino acid decarboxylase or DOPA decarboxylase, monoamine oxidase (MAO), and catechol O-methyl transferase (COMT) may be referred to as dopaminergic as well. Also, any endogenous or exogenous chemical substance that acts to affect dopamine receptors or dopamine release through indirect actions (for example, on neurons that synapse onto neurons that release dopamine or express dopamine receptors) can also be said to have dopaminergic effects, two prominent examples being opioids, which enhance dopamine release indirectly in the reward pathways, and some substituted amphetamines, which enhance dopamine release directly by binding to and inhibiting VMAT2.

<span class="mw-page-title-main">Dopamine agonist</span> Compound that activates dopamine receptors

A dopamine agonist(DA) is a compound that activates dopamine receptors. There are two families of dopamine receptors, D1-like and D2-like. They are all G protein-coupled receptors. D1- and D5-receptors belong to the D1-like family and the D2-like family includes D2, D3 and D4 receptors. Dopamine agonists are primarily used in the treatment of Parkinson's disease, and to a lesser extent, in hyperprolactinemia and restless legs syndrome. They are also used off-label in the treatment of clinical depression. The use of dopamine agonists is associated with impulse control disorders and dopamine agonist withdrawal syndrome (DAWS).

<span class="mw-page-title-main">Lisuride</span> Chemical compound

Lisuride, sold under the brand name Dopergin among others, is a monoaminergic medication of the ergoline class which is used in the treatment of Parkinson's disease, migraine, and high prolactin levels. It is taken by mouth.

<span class="mw-page-title-main">Rotigotine</span> Chemical compound

Rotigotine, sold under the brand name Neupro among others, is a dopamine agonist of the non-ergoline class of medications indicated for the treatment of Parkinson's disease and restless legs syndrome. It is formulated as a once-daily transdermal patch which provides a slow and constant supply of the drug over the course of 24 hours.

In the management of Parkinson's disease, due to the chronic nature of Parkinson's disease (PD), a broad-based program is needed that includes patient and family education, support-group services, general wellness maintenance, exercise, and nutrition. At present, no cure for the disease is known, but medications or surgery can provide relief from the symptoms.

<span class="mw-page-title-main">Dihydroergocryptine</span> Chemical compound

Dihydroergocryptine (DHEC), sold under the brand names Almirid and Cripar among others, is a dopamine agonist of the ergoline group that is used as an antiparkinson agent in the treatment of Parkinson's disease. It is taken by mouth.

<span class="mw-page-title-main">Metergoline</span> Chemical compound

Metergoline, also known as methergoline and sold under the brand names Contralac (veterinary) and Liserdol (clinical), is a monoaminergic medication of the ergoline group which is used as a prolactin inhibitor in the treatment of hyperprolactinemia and to suppress lactation.

<span class="mw-page-title-main">Istradefylline</span> Chemical compound

Istradefylline, sold under the brand name Nourianz, is a medication used as an add-on treatment to levodopa/carbidopa in adults with Parkinson's disease (PD) experiencing "off" episodes. Istradefylline reduces "off" periods resulting from long-term treatment with the antiparkinson drug levodopa. An "off" episode is a time when a patient's medications are not working well, causing an increase in PD symptoms, such as tremor and difficulty walking.

<span class="mw-page-title-main">Safinamide</span> Reversible monoamine oxidase B inhibitor

Safinamide is a drug used as an add-on treatment for Parkinson's disease with "off" episodes; it has multiple modes of action, including the inhibition of monoamine oxidase B.

<span class="mw-page-title-main">Pimavanserin</span> Atypical antipsychotic medication

Pimavanserin, sold under the brand name Nuplazid, is an atypical antipsychotic which is approved for the treatment of Parkinson's disease psychosis and is also being studied for the treatment of Alzheimer's disease psychosis, schizophrenia, agitation, and major depressive disorder. Unlike other antipsychotics, pimavanserin is not a dopamine receptor antagonist.

<span class="mw-page-title-main">Befiradol</span> Chemical compound

Befiradol is an experimental drug being studied for the treatment of levodopa-induced dyskinesia. It is a potent and selective 5-HT1A receptor full agonist.

<span class="mw-page-title-main">Prolactin modulator</span> Drug class

A prolactin modulator is a drug which affects the hypothalamic–pituitary–prolactin axis by modulating the secretion of the pituitary hormone prolactin from the anterior pituitary gland. Prolactin inhibitors suppress and prolactin releasers induce the secretion of prolactin, respectively.

References

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  2. ↑ Elks J, Ganellin CR (1990). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 204–.
  3. ↑ Fischer J, Ganellin CR (2006). Analogue-based Drug Discovery. John Wiley & Sons. p. 533. ISBN   9783527607495.
  4. ↑ World Health Organization (2023). The selection and use of essential medicines 2023: web annex A: World Health Organization model list of essential medicines: 23rd list (2023). Geneva: World Health Organization. hdl: 10665/371090 . WHO/MHP/HPS/EML/2023.02.
  5. ↑ UK electronic Medicines Compendium Dostinex Tablets Last Updated on eMC Dec 23, 2013
  6. ↑ Sayyah-Melli M, Tehrani-Gadim S, Dastranj-Tabrizi A, Gatrehsamani F, Morteza G, Ouladesahebmadarek E, et al. (August 2009). "Comparison of the effect of gonadotropin-releasing hormone agonist and dopamine receptor agonist on uterine myoma growth. Histologic, sonographic, and intra-operative changes". Saudi Medical Journal. 30 (8): 1024–1033. PMID   19668882.
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  25. ↑ Cavero I, Guillon JM (2014). "Safety Pharmacology assessment of drugs with biased 5-HT(2B) receptor agonism mediating cardiac valvulopathy". Journal of Pharmacological and Toxicological Methods. 69 (2): 150–161. doi:10.1016/j.vascn.2013.12.004. PMID   24361689.
  26. 1 2 Council regulation (EEC) no 1768/92 in the matter of Application No SPC/GB94/012 for a Supplementary Protection Certificate in the name of Farmitalia Carlo Erba S. r. l.
  27. ↑ Espace record: GB 202074566
  28. ↑ US Patent 4526892 - Dimethylaminoalkyl-3-(ergoline-8'.beta.carbonyl)-ureas
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  30. ↑ Carfagna N, Caccia C, Buonamici M, Cervini MA, Cavanus S, Fornaretto MG, Damiani D, Fariello RG (1991). "Biochemical and pharmacological studies on cabergoline, a new putative antiparkinsonian drug". Soc Neurosci Abs. 17: 1075.
  31. ↑ Staff. News: Farmitalia bought by Kabi Pharmacia [ permanent dead link ]. Ann Oncol (1993) 4 (5): 345.
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  33. ↑ FDA approval history
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  35. ↑ "Cabergoline Uses, Side Effects & Warnings". Archived from the original on 2015-12-30.
  36. ↑ Miyoshi T, Otsuka F, Takeda M, Inagaki K, Suzuki J, Ogura T, et al. (December 2004). "Effect of cabergoline treatment on Cushing's disease caused by aberrant adrenocorticotropin-secreting macroadenoma". Journal of Endocrinological Investigation. 27 (11): 1055–1059. doi:10.1007/bf03345309. PMID   15754738. S2CID   6660262.
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