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Chronic morphine-induced neuronal morphological changes in the ventral tegmental area in rats are reversed by
Ning-ning Chu1, Wei Xia, Peng Yu
1Neuroscience Research Institute, Peking University, China.
Abstract:
The aim of this study was to observe the effect of electroacupuncture (EA) on chronic morphine-induced neuronal morphological changes in the ventral tegmental area (VTA) in rats at electron-microscopic level. Fourteen days of administering escalating doses of morphine induced pathological morphological changes of neurons in the VTA: the rough endoplasmic reticulum swelled, membrane configuration of the nucleus and mitochondria blurred, and structure of myelin sheath changed. Both 2 and 100 Hz EA treatment reversed the morphological alterations induced by chronic morphine administration. The findings provide new evidence that EA may serve as a potential therapy in treating opiate addiction.
Insights
Electroacupuncture (EA) reversed chronic morphine
Area of Science:
- Neuroscience
- Integrative and Complementary Medicine
Background:
- Chronic morphine administration causes neuronal damage in the ventral tegmental area (VTA).
- Morphine-induced neurotoxicity affects neuronal structures like the endoplasmic reticulum, nucleus, mitochondria, and myelin sheath.
Purpose of the Study:
- To investigate the effects of electroacupuncture (EA) on morphine-induced neuronal morphological changes in the rat VTA.
- To evaluate EA's potential as a therapeutic intervention for opiate addiction.
Main Methods:
- Rats received escalating doses of morphine for 14 days.
- Electron microscopy was used to examine neuronal morphology in the VTA.
- Electroacupuncture (EA) at 2 Hz and 100 Hz was applied to observe its effects.
Main Results:
- Morphine induced swelling of the rough endoplasmic reticulum.
- Nuclear and mitochondrial membrane configurations became blurred.
- Myelin sheath structures were altered by chronic morphine.
- Both 2 Hz and 100 Hz EA treatments effectively reversed these morphine-induced morphological changes.
Conclusions:
- Electroacupuncture (EA) demonstrates neuroprotective effects against chronic morphine toxicity in the VTA.
- EA shows promise as a novel therapeutic strategy for managing opiate addiction.
- Neuronal morphology in the VTA can be restored by EA treatment.
