[Effect of chlorpromazine combined with Platycodon grandiflorum on change of dopamine in rat striatum by microdialysis].
OBJECTIVE
To study the effects of chlorpromazine combined with Platycodon grandiflorum on the striatal extracellular dopamine level in rats and to research the interaction and the mechanism of action after combining traditional Chinese medicine with western medicine.


METHODS
Twenty four rats were randomly assigned into four groups: the control group, Platycodon group, chlorpromazine group and chlorpromazined combined with P. grandiflorum group. The level of dopamine in CSF microdialysis samples was detected with high performance liquid chromatography with electrochemical detector after administration for 10 days.


RESULTS
The CSF level of DA (1.52 +/- 0.34) microg x L(-1) was significantly higher (P < 0.01) in chlorpromazine combined with P. grandiflorum group than that in the chlorpromazine group (1.25 +/- 0.22) microg x L(-1) (P < 0.05) and that in the normal control (1.06 +/- 0.24) microg x L(-1) (P < 0.01).


CONCLUSIONS
The combining utilization of P. grandiflorum and chlorpromazine may increase the DA concentration of monoamine neurotransmitters, which results in under the therapeutic effect is maintained, the dosage of chlorpromazine used to individuals are decreased and the incidence rate of the adverse reactions of chlorpromazine will descend.
He
Xinrong
X
Traditional Chinese Medicine Pharmacy of PLA General Hospital, Beijing 100853, China. hexinrong666@163.com
Huan
Dincai
D
Cao
Zheng
Z
Liu
Ping
P
D000818:Animals; D002746:Chlorpromazine / Q000737:chemistry*; D003342:Corpus Striatum / Q000187:drug effects* / Q000378:metabolism; D004298:Dopamine / Q000378:metabolism*; D004365:Drugs, Chinese Herbal / Q000494:pharmacology*; D008297:Male; D017551:Microdialysis; D031238:Platycodon / Q000737:chemistry*; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley
D004365:Drugs, Chinese Herbal; D002746:Chlorpromazine; D004298:Dopamine