Change in Levels of Monoamine Neurotransmitters and Their Main Metabolites of Rat Brain After Electric Acupuncture Treatment

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Abstract
The changes in levels of 5-hydroxytryptamine (5-HT), 5-hydroxyindoleacetic acid (5-HIAA), norepinephrine (NE), 3-methoxy-4-hydroxyphenylethyleneglycol sulphate (MHPG-SO4) and dopamine (DA) of rat brain were studied after electric acupuncture stimulation (EAS). We found that the mean values of cerebral 5-HT and 5-HIAA after EAS were increased 16% (ppp<0.01), significantly lower than that of the controls. The cerebral MHPG-SO4 and DA in both groups showed no significant difference. In a second series of experiments with another group of rats, EAS was administered once a day for ten days. There was no statistical significance between the treated group and the control group in the differences in brain contents of all three monoamine neurotransmitters and 5-HIAA.