D1/D2 dopamine receptor interaction in membrane abolished by 6-hydroxydopamine lesion
Related Experiment Video
Updated: Oct 29, 2026

The 6-hydroxydopamine Rat Model of Parkinson's Disease
Published on: October 27, 2021
1Department of Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai.
Abstract:
D1/D2 interaction in rat striatum was investigated by examining the effect of the D2 antagonist spiperone on the binding of [3H]SCH23390 to D1 dopamine (DA) receptors. In the presence of endogenous DA, spiperone blocked D2 receptors, then caused the increase of the binding of [3H]SCH23390 in rat striatal homogenate. After the 6-hydroxydopamine (6-OHDA) lesion, the increase was not found even if in the addition of exogenous DA. The results suggest that the D2 antagonist can modify the interaction between endogenous DA and D1 receptors labeled with [3H]SCH23390, while 6-OHDA lesion may change the state of D1/D2 interaction operating at the receptor level.
Related Concept Videos
Drugs Affecting Neurotransmitter Synthesis
Parkinson's Disease: Treatment
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of its...
Drugs Affecting Neurotransmitter Release or Uptake
Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists
Antipsychotic Drugs: Typical and Atypical Agents
Neurochemical Transmission: Sites of Drug Action

