电刺激皮层SⅡ区和电针对猫十字沟前皮层内某些游离氨基酸含量的影响

Effects of Electrical Stimulation of S Ⅱ and Electroacupuncture on Contents of Some Free Amino Acids in the Precruciate Cortex

电刺激皮层SⅡ区、电针以及电刺激皮层SⅡ区＋电针对猫十字沟前皮层r-氨基丁酸、谷氨酸、天门冬氨酸和丙氨酸含量均没有显著影响，说明这些氨基酸可能不参与电针和刺激皮层SⅡ区对十字沟前皮层的调节作用。

Effects of electrical stimulation of the somatosensory area Ⅱ (S Ⅱ) of the cerebral cortex and electroacupuncture (EA) on contents of r-aminobutyric acid (GABA), glutamic acid (Glu), aspartic acid(Asp)and alanine (Ala) in the precruciate cortex (PreCtx) were investigated in order to probe if the free amino acids in the preCtx are invohied in the S Ⅱ descending modulation and acupuncture analgesia.Adult cats were randomly divided into four groups: control, EA, electrical stimulation of S Ⅱ and stimulation of S Ⅱ plus EA. EA was applied at right Huantiao and Yanglingquan acupoints for 30 min and electrical stimulation was given on the S Ⅱ surface. Amino acids were separated by paper chromatography and determined with spectrophotometry.Results showed that the stimulation of S Ⅱ or/and EA had no significant effects on the contents of GABA, Glu, Asp and Ala in the PreCtx, indicating that the four amino acids are probably not involved in regulatory effects of EA and the stimulation of S Ⅱ on the PreCtx