Exploration of central dopamine D2 receptors by autoradiography,pathology and functional behaviour observation in rat model with experimental parkinsonism
Exploration of central dopamine D2 receptors by autoradiography,pathology and functional behaviour observation in rat model with experimental parkinsonism[J]. Nuclear techniques, 1996, (11).
Exploration of central dopamine D2 receptors by autoradiography,pathology and functional behaviour observation in rat model with experimental parkinsonism[J]. Nuclear techniques, 1996, (11).DOI:
The rat model with experimental parkinsonism mimic the course of human parkinsonism were made by cerebral-stereotaxic techniques. 125I-IBZM was used to evaluate the D2 receptors distribution by autoradiographic analysis of coronal brain section. In 6 parkinsonism model rats
on the lesioned side the striatum/frontal cortex ratio was 5.32 ± 0.37
it was significantly(P<0.05) higher than the contralateral intact side and the control group
and coincided with the pathological findings and neurological changes. Also
there was a positive correlation between the increased value and numbers of apomorphine induced rotation. All of the above verified that there was an up regulation effect in early parkinsonism
and 125I-IBZM as the ligand of D2 receptor
can well reflect the distribution and changes of D2 receptors
and also as the theoretical basis for the clinical imaging diagnosis.