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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Evidence for postsynaptic dopamine agonist effects of B-HT 920 in the presence of the dopamine D-1 agonist SKF 38393.

The ability of B-HT 920, a selective dopamine (DA) D-2 agonist, to stimulate postsynaptic DA receptors in brain was evaluated by assessing its ability to induce stereotypy and to increase locomotor activity in rats. When administered alone, B-HT 920 (0.03-3.0 mg/kg) did not induce stereotypy and produced only inhibition of locomotor activity, suggesting a lack of postsynaptic DA agonist actions. However, a different pattern of effects emerged when B-HT 920 was administered in combination with the selective DA D-1 agonist SKF 38393 (10 mg/kg): stereotypies (sniffing, licking, and gnawing) were induced and there was an inverted U-shaped function for locomotor activity. These data are consistent with the hypothesis that B-HT 920 has postsynaptic DA D-2 receptor agonist effects in normal rats that are revealed when D-1 receptor stimulation is also increased.[1]

References

  1. Evidence for postsynaptic dopamine agonist effects of B-HT 920 in the presence of the dopamine D-1 agonist SKF 38393. Meltzer, L.T., Wiley, J.N., Williams, A.E., Heffner, T.G. Psychopharmacology (Berl.) (1988) [Pubmed]
 
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