SB-277011-A

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SB-277,011A é uma droga que actua como um potente e selectivo antagonista do receptor D3 de dopamina,[1] e que é 80-100x selectivo para o receptor D3 em relação ao D2,[2] e faltando-lhe qualquer actividade de agonista parcial.[3]

SB-277,011A é usado no estudo da adicção de drogas estimulantes como a nicotina.[4] e a cocaína.[5][6] Onde a cocaína reduz o limite de auto-estimulação eléctrica do cérebro em ratos, uma indicação dos efeitos de recompensa da cocaína, o SB-277,011A reverte completamente este efeito. Pode então ser útil no tratamento da adicção a nicotina e cocaína,[7][8][9] e também está a ser investigado o potencial uso no tratamento de outras adicções de drogas, como a de heroína[10] e de álcool.[11][12][13]

Outra possível aplicação do SB-277,011A é no tratamento da esquizofrenia,[14] e pode ser particularmente útil no tratamento de doentes comórbidos, que são simultaneamente esquizofrénicos e adictos a drogas.[15] No entanto, poderá piorar efeitos secundários como a discinesia tardia em doentes a quem foram já prescritas drogas antipsicóticas.[16]

Referências

  1. ↑ Stemp G, Ashmeade T, Branch CL, Hadley MS, Hunter AJ, Johnson CN, Nash DJ, Thewlis KM, Vong AK, Austin NE, Jeffrey P, Avenell KY, Boyfield I, Hagan JJ, Middlemiss DN, Reavill C, Riley GJ, Routledge C, Wood M. Design and synthesis of trans-N-[4-[2-(6-cyano-1,2,3, 4-tetrahydroisoquinolin-2-yl)ethyl]cyclohexyl]-4-quinolinecarboxamide (SB-277011): A potent and selective dopamine D(3) receptor antagonist with high oral bioavailability and CNS penetration in the rat. Journal of Medicinal Chemistry. 2000 May 4;43(9):1878-85. PMID 10794704
  2. ↑ Southam E, Lloyd A, Jennings CA, Cluderay JE, Cilia J, Gartlon JE, Jones DN. Effect of the selective dopamine D3 receptor antagonist SB-277011-A on regional c-Fos-like expression in rat forebrain. Brain Research. 2007 May 29;1149:50-7. PMID 17382304
  3. ↑ Reavill C, Taylor SG, Wood MD, Ashmeade T, Austin NE, Avenell KY, Boyfield I, Branch CL, Cilia J, Coldwell MC, Hadley MS, Hunter AJ, Jeffrey P, Jewitt F, Johnson CN, Jones DN, Medhurst AD, Middlemiss DN, Nash DJ, Riley GJ, Routledge C, Stemp G, Thewlis KM, Trail B, Vong AK, Hagan JJ. Pharmacological actions of a novel, high-affinity, and selective human dopamine D(3) receptor antagonist, SB-277011-A. Journal of Pharmacology and Experimental Therapeutics. 2000 Sep;294(3):1154-65. PMID 10945872
  4. ↑ Le Foll B, Schwartz JC, Sokoloff P. Disruption of nicotine conditioning by dopamine D(3) receptor ligands. Molecular Psychiatry. 2003 Feb;8(2):225-30. PMID 12610655
  5. ↑ Vorel SR, Ashby CR Jr, Paul M, Liu X, Hayes R, Hagan JJ, Middlemiss DN, Stemp G, Gardner EL. Dopamine D3 receptor antagonism inhibits cocaine-seeking and cocaine-enhanced brain reward in rats. Journal of Neuroscience. 2002 Nov 1;22(21):9595-603. PMID 12417684
  6. ↑ Di Ciano P, Underwood RJ, Hagan JJ, Everitt BJ. Attenuation of cue-controlled cocaine-seeking by a selective D3 dopamine receptor antagonist SB-277011-A. Neuropsychopharmacology. 2003 Feb;28(2):329-38. PMID 12589386
  7. ↑ Andreoli M, Tessari M, Pilla M, Valerio E, Hagan JJ, Heidbreder CA. Selective antagonism at dopamine D3 receptors prevents nicotine-triggered relapse to nicotine-seeking behavior. Neuropsychopharmacology. 2003 Jul;28(7):1272-80. PMID 12700694
  8. ↑ Ross JT, Corrigall WA, Heidbreder CA, LeSage MG. Effects of the selective dopamine D3 receptor antagonist SB-277011A on the reinforcing effects of nicotine as measured by a progressive-ratio schedule in rats. European Journal of Pharmacology. 2007 Mar 22;559(2-3):173-9. PMID 17303116
  9. ↑ Xi ZX, Gilbert J, Campos AC, Kline N, Ashby CR Jr, Hagan JJ, Heidbreder CA, Gardner EL. Blockade of mesolimbic dopamine D3 receptors inhibits stress-induced reinstatement of cocaine-seeking in rats. Psychopharmacology (Berlin). 2004 Oct;176(1):57-65. PMID 15083257
  10. ↑ Ashby CR Jr, Paul M, Gardner EL, Heidbreder CA, Hagan JJ. Acute administration of the selective D3 receptor antagonist SB-277011A blocks the acquisition and expression of the conditioned place preference response to heroin in male rats. Synapse. 2003 Jun 1;48(3):154-6. PMID 12645041
  11. ↑ Thanos PK, Katana JM, Ashby CR Jr, Michaelides M, Gardner EL, Heidbreder CA, Volkow ND. The selective dopamine D3 receptor antagonist SB-277011-A attenuates ethanol consumption in ethanol preferring (P) and non-preferring (NP) rats. Pharmacology, Biochemistry and Behaviour. 2005 May;81(1):190-7. PMID 15894078
  12. ↑ Vengeliene V, Leonardi-Essmann F, Perreau-Lenz S, Gebicke-Haerter P, Drescher K, Gross G, Spanagel R. The dopamine D3 receptor plays an essential role in alcohol-seeking and relapse. FASEB Journal. 2006 Nov;20(13):2223-33. PMID 17077299
  13. ↑ Heidbreder CA, Andreoli M, Marcon C, Hutcheson DM, Gardner EL, Ashby CR Jr. Evidence for the role of dopamine D3 receptors in oral operant alcohol self-administration and reinstatement of alcohol-seeking behavior in mice. Addiction Biology. 2007 Mar;12(1):35-50. PMID 17407496
  14. ↑ Joyce JN, Millan MJ. Dopamine D3 receptor antagonists as therapeutic agents. Drug Discovery Today. 2005 Jul 1;10(13):917-25. PMID 15993811
  15. ↑ Jahnke U. Experimental pharmacotherapeutics for schizophrenia and addiction. IDrugs. 2008 Jan;11(1):7-9. PMID 18175251
  16. ↑ Malik P, Andersen MB, Peacock L. The effects of dopamine D3 agonists and antagonists in a nonhuman primate model of tardive dyskinesia. Pharmacology, Biochemistry and Behaviour. 2004 Aug;78(4):805-10. PMID 15301939
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