- Dopamine agonist
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A dopamine agonist is a compound that activates dopamine receptors in the absence of dopamine. Dopamine agonists activate signaling pathways through the dopamine receptor and trimeric G-proteins, ultimately leading to changes in gene transcription.
Contents
Uses
More examples are found in main articles of DA examplesSome medical drugs act as dopamine agonists and can treat hypodopaminergic (low dopamine) conditions; they are typically used for treating Parkinson's disease and certain pituitary tumors (prolactinoma), and may be useful for restless legs syndrome (RLS). Both Requip (Ropinirole) and Mirapex (Pramipexole) are FDA-approved for the treatment of RLS. There is also an ongoing clinical trial to test the effectiveness of the dopamine agonist Requip (ropinirole) in reversing the symptoms of SSRI-induced sexual dysfunction and Post-SSRI sexual dysfunction (PSSD).[1] 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).[2]
Side-effects
Some of the common side effects of dopamine agonists include:[3][4]
- Euphoria
- Hallucinations
- Causing or worsening psychosis
- Orthostatic hypotension
- Increased orgasmic intensity
- Weight loss
- Nausea
- Insomnia
- Unusual tiredness or weakness
- Dizziness, drowsiness, lightheadedness, or fainting
- Twitching, twisting, or other unusual body movements
- Pathological addiction (gambling, shopping, internet pornography, hyper-sexuality) – specifically D3-preferring agonists
Examples
Examples of dopamine agonists include:
- Parlodel (bromocriptine)
- Dostinex (cabergoline)
- Permax (pergolide) - Removed from market in America March 29, 2007.[5]
- Mirapex and Sifrol (pramipexole)
- Requip (ropinirole)
- Apokyn (apomorphine)
- Neupro (rotigotine)
- Norprolac (Quinagolide)
Some, such as fenoldopam, are selective for dopamine receptor D1.[6]
See also
References
- ^ ClinicalTrials.gov NCT00334048 - "Treating Sexual Dysfunction From SSRI Medication: a Study Comparing Requip CR to Placebo"
- ^ Youssef MA, van Wely M, Hassan MA, et al. (March 2010). "Can dopamine agonists reduce the incidence and severity of OHSS in IVF/ICSI treatment cycles? A systematic review and meta-analysis". Hum Reprod Update 16 (5): 459–66. doi:10.1093/humupd/dmq006. PMID 20354100. http://humupd.oxfordjournals.org/cgi/content/abstract/16/5/459?etoc.
- ^ "MedlinePlus Drug Information: Pramipexole (Systemic)". United States National Library of Medicine. Archived from the original on 2006-09-26. http://web.archive.org/web/20060926023858/http://www.nlm.nih.gov/medlineplus/druginfo/uspdi/203739.html. Retrieved 2006-09-27.
- ^ Boyd, Alan (1995). "Bromocriptine and psychosis: A literature review". Psychiatric Quarterly 66 (1): 87–95. doi:10.1007/BF02238717. PMID 7701022. http://www.springerlink.com/content/y42v466374524k1m/. Retrieved 2008-09-06.
- ^ FDA Announces Voluntary Withdrawal of Pergolide Products
- ^ Ng SS, Pang CC (March 2000). "In vivo venodilator action of fenoldopam, a dopamine D(1)-receptor agonist". Br. J. Pharmacol. 129 (5): 853–8. doi:10.1038/sj.bjp.0703119. PMC 1571905. PMID 10696081. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1571905.
6. Avanzi M, Uber E, Bonfa F. Pathological gambling in two patients on dopamine replacement therapy for Parkinson’s disease. Neurol Sci 2004; 25:98–101[Medline]
External links
- MeSH Dopamine+Agonists
- http://www.abc.net.au/news/stories/2008/01/22/2143502.htm
- http://neuro.psychiatryonline.org/cgi/content/full/19/4/473
Dopaminergics Reuptake inhibitors PlasmalemmalDAT inhibitorsPiperazines: DBL-583 • GBR-12,935 • Nefazodone • Vanoxerine; Piperidines: BTCP • Desoxypipradrol • Dextromethylphenidate • Difemetorex • Ethylphenidate • Methylnaphthidate • Methylphenidate • Phencyclidine • Pipradrol; Pyrrolidines: Diphenylprolinol • Methylenedioxypyrovalerone (MDPV) • Naphyrone • Prolintane • Pyrovalerone; Tropanes: β-CPPIT • Altropane • Brasofensine • CFT • Cocaine • Dichloropane • Difluoropine • FE-β-CPPIT • FP-β-CPPIT • Ioflupane (123I) • Iometopane • RTI-112 • RTI-113 • RTI-121 • RTI-126 • RTI-150 • RTI-177 • RTI-229 • RTI-336 • Tenocyclidine • Tesofensine • Troparil • Tropoxane • WF-11 • WF-23 • WF-31 • WF-33; Others: Adrafinil • Armodafinil • Amfonelic acid • Amineptine • Benzatropine (Benztropine) • Bromantane • BTQ • BTS-74,398 • Bupropion (Amfebutamone) • Ciclazindol • Diclofensine • Dimethocaine • Diphenylpyraline • Dizocilpine • DOV-102,677 • DOV-21,947 • DOV-216,303 • Etybenzatropine (Ethylbenztropine) • EXP-561 • Fencamine • Fencamfamine • Fezolamine • GYKI-52,895 • Indatraline • Ketamine • Lefetamine • Levophacetoperane • LR-5182 • Manifaxine • Mazindol • Medifoxamine • Mesocarb • Modafinil • Nefopam • Nomifensine • NS-2359 • O-2172 • Pridefrine • Propylamphetamine • Radafaxine • SEP-225,289 • SEP-227,162 • Sertraline • Sibutramine • Tametraline • Tedatioxetine • TripelennamineVMAT inhibitorsReleasing agents Morpholines: Fenbutrazate • Morazone • Phendimetrazine • Phenmetrazine; Oxazolines: 4-Methylaminorex (4-MAR, 4-MAX) • Aminorex • Clominorex • Cyclazodone • Fenozolone • Fluminorex • Pemoline • Thozalinone; Phenethylamines (also amphetamines, cathinones, phentermines, etc): 2-Hydroxyphenethylamine (2-OH-PEA) • 4-CAB • 4-Methylamphetamine (4-MA) • 4-Methylmethamphetamine (4-MMA) • Alfetamine • Amfecloral • Amfepentorex • Amfepramone • Amphetamine (Dextroamphetamine, Levoamphetamine) • Amphetaminil • β-Methylphenethylamine (β-Me-PEA) • Benzodioxolylbutanamine (BDB) • Benzodioxolylhydroxybutanamine (BOH) • Benzphetamine • Buphedrone • Butylone • Cathine • Cathinone • Clobenzorex • Clortermine • D-Deprenyl • Dimethoxyamphetamine (DMA) • Dimethoxymethamphetamine (DMMA) • Dimethylamphetamine • Dimethylcathinone (Dimethylpropion, metamfepramone) • Ethcathinone (Ethylpropion) • Ethylamphetamine • Ethylbenzodioxolylbutanamine (EBDB) • Ethylone • Famprofazone • Fenethylline • Fenproporex • Flephedrone • Fludorex • Furfenorex • Hordenine • Lophophine (Homomyristicylamine) • Mefenorex • Mephedrone • Methamphetamine (Desoxyephedrine, Methedrine; Dextromethamphetamine, Levomethamphetamine) • Methcathinone (Methylpropion) • Methedrone • Methoxymethylenedioxyamphetamine (MMDA) • Methoxymethylenedioxymethamphetamine (MMDMA) • Methylbenzodioxolylbutanamine (MBDB) • Methylenedioxyamphetamine (MDA, tenamfetamine) • Methylenedioxyethylamphetamine (MDEA) • Methylenedioxyhydroxyamphetamine (MDOH) • Methylenedioxymethamphetamine (MDMA) • Methylenedioxymethylphenethylamine (MDMPEA, homarylamine) • Methylenedioxyphenethylamine (MDPEA, homopiperonylamine) • Methylone • Ortetamine • Parabromoamphetamine (PBA) • Parachloroamphetamine (PCA) • Parafluoroamphetamine (PFA) • Parafluoromethamphetamine (PFMA) • Parahydroxyamphetamine (PHA) • Paraiodoamphetamine (PIA) • Paredrine (Norpholedrine, Oxamphetamine) • Phenethylamine (PEA) • Pholedrine • Phenpromethamine • Prenylamine • Propylamphetamine • Tiflorex (Flutiorex) • Tyramine (TRA) • Xylopropamine • Zylofuramine; Piperazines: 2,5-Dimethoxy-4-bromobenzylpiperazine (2C-B-BZP) • Benzylpiperazine (BZP) • Methoxyphenylpiperazine (MeOPP, paraperazine) • Methylbenzylpiperazine (MBZP) • Methylenedioxybenzylpiperazine (MDBZP, piperonylpiperazine); Others: 2-Amino-1,2-dihydronaphthalene (2-ADN) • 2-Aminoindane (2-AI) • 2-Aminotetralin (2-AT) • 4-Benzylpiperidine (4-BP) • 5-IAI • Clofenciclan • Cyclopentamine • Cypenamine • Cyprodenate • Feprosidnine • Gilutensin • Heptaminol • Hexacyclonate • Indanylaminopropane (IAP) • Indanorex • Isometheptene • Methylhexanamine • Naphthylaminopropane (NAP) • Octodrine • Phthalimidopropiophenone • Propylhexedrine (Levopropylhexedrine) • Tuaminoheptane (Tuamine)Enzyme inhibitors PAH inhibitors3,4-DihydroxystyreneTH inhibitorsNonselective: Benmoxin • Caroxazone • Echinopsidine • Furazolidone • Hydralazine • Indantadol • Iproclozide • Iproniazid • Isocarboxazid • Isoniazid • Linezolid • Mebanazine • Metfendrazine • Nialamide • Octamoxin • Paraxazone • Phenelzine • Pheniprazine • Phenoxypropazine • Pivalylbenzhydrazine • Procarbazine • Safrazine • Tranylcypromine; MAO-A selective: Amiflamine • Bazinaprine • Befloxatone • Befol • Brofaromine • Cimoxatone • Clorgiline • Esuprone • Harmala alkaloids • Methylene Blue • Metralindole • Minaprine • Moclobemide • Pirlindole • Sercloremine • Tetrindole • Toloxatone • Tyrima; MAO-B selective: D-Deprenyl • L-Deprenyl (Selegiline) • Ladostigil • Lazabemide • Milacemide • Pargyline • Rasagiline • SafinamideDBH inhibitorsOthers L-Phenylalanine → L-Tyrosine → L-DOPA (Levodopa)Ferrous iron (Fe2+) • Tetrahydrobiopterin • Vitamin B3 (Niacin, Nicotinamide → NADPH) • Vitamin B6 (Pyridoxine, Pyridoxamine, Pyridoxal → Pyridoxal phosphate) • Vitamin B9 (Folic acid → Tetrahydrofolic acid) • Vitamin C (Ascorbic acid) • Zinc (Zn2+)OthersActivity enhancers: Benzofuranylpropylaminopentane (BPAP) • Phenylpropylaminopentane (PPAP); Toxins: Oxidopamine (6-Hydroxydopamine)List of dopaminergic drugsNeuromodulation Types - Enzyme: Inducer • Inhibitor
- Ion channel: Opener • Blocker
- Receptor: Agonist • Antagonist • Positive allosteric modulator (PAM) • Negative allosteric modulator (NAM) • Inverse agonist
- Transporter [Reuptake]: Enhancer (RE) • Inhibitor (RI) • Releaser (RA)
- Miscellaneous: Precursor • Cofactor
Classes see Enzyme inhibitionCalcium channel blocker (CCB) • Potassium channel blocker (PCB) • Sodium channel blocker (SCB) • Potassium channel opener (PCO)Adrenergic receptor agonist (α, β (1, 2)) • Adrenergic receptor antagonist (α (1, 2), β) • Adrenergic reuptake inhibitor (ARI)Dopamine receptor agonist • Dopamine receptor antagonist • Dopamine reuptake inhibitor (DRI)Serotonin receptor agonist • Serotonin Receptor Antagonist (5-HT3) • Serotonin reuptake inhibitor (SRI) • Serotonin reuptake enhancer (SRE)GABA receptor agonist • GABA receptor antagonist • GABA reuptake inhibitor (GRI)Cannabinoid receptor agonist • Cannabinoid receptor antagonistOtherAdenosine reuptake inhibitor (AdoRI) • Angiotensin II receptor antagonist • Endothelin receptor antagonist • NK1 receptor antagonist • Vasopressin receptor antagonistMiscellaneousCategories:- Dopamine agonists
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