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Abstract Title:

[Influence of acupuncture and moxibustion on conditional position preference and prefrontal cortical ultrastructure in heroin re-addicted rats].

Abstract Source:

Zhen Ci Yan Jiu. 2009 Apr;34(2):97-100. PMID: 19685722

Abstract Author(s):

Rong-Jun Zhang, Xiao-Ge Song, Xing-Hui Cai

Abstract:

OBJECTIVE: To observe the effect of acupuncture and moxibustion on the conditional position preference (CPP) and prefrontal cortical ultrastructure in heroin re-addicted rats. METHODS: Thirty-two Wistar rats were randomly divided into normal, model, medication and acu-moxibustion (acu-moxi) groups, with 8 cases in each. Re-addiction model was established by repeated intramuscular injection of heroin into the hindlimbs. Rats of medication group were treated with intragastric administration of Methadone during detoxification. For rats in acu-moxi group, acupuncture needle was inserted into "Baihui" (GV 20) and moxibustion treatment was used to bilateral "Shenshu" (BL 23) for 30 min during detoxification. Rats in normal group were given with intramuscular injection of normal saline during addiction. CPP tests were conducted once daily in a spatial place preference box for 8 days. On the 39th day of the experiment, the rats under anesthesia were killed for sampling the prefrontal cortex (PFC) tissue on an ice plate, then, the ultrastructure of the neurons was observed by using a transmission electron microscope. RESULTS: After modeling, the rats' staying duration in the dark-box was shortened obviously (P < 0. 1). After the treatment, the staying duration in dark-box in acu-moxi group was significantly longer than that in model and medication groups (P < 0.01). Compared with normal control group, electron-microscopic results indicated that in PFC tissues of model and medication groups, vacuoles and edema of cytoplasm at different degrees, enlargement of the rough endoplasmic reticulum (REPR), vacuoles or disappearance of mitochondria, reduction of ribosome in number, and widening of the nuclear intermembrance interstice were seen. While in acu-moxi group, the number of mitochondria and ribosome increased slightly, the mitochondrial cristae was clear, the number of REPR increased relatively but dilated slightly, and the intermembrance space was basically normal. CONCLUSION: Acu-moxibustion can improve heroin re-addicted rats' conditional position preference and has a protection effect on the cerebral cortical neurons. disappearance of mitochondria, reduction of ribosome in number, and widening of the nuclear intermembrance interstice were seen. While in acu-moxi group, the number of mitochondria and ribosome increased slightly, the mitochondrial cristae was clear, the number of REPR increased relatively but dilated slightly, and the intermembrance space was basically normal. CONCLUSION: Acu-moxibustion can improve heroin re-addicted rats' conditional position preference and has a protection effect on the cerebral cortical neurons.

Study Type : Animal Study

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