大黄虫丸对大鼠脑出血模型海马组织氨基酸含量的影响

目的 观察大黄庶虫]虫丸对大鼠脑出血模型海马组织氨基酸含量的影响,探讨大黄庶虫]虫丸对脑出血大鼠保护作用的可能机制.方法 选择胶原酶加肝素联合注射法诱导脑出血大鼠模型,采用反相高效液相色谱荧光法观察大黄庶虫]虫丸对大鼠脑组织海马中谷氨酸（glutamic acid,Glu）、天门冬氨酸（aspartic acid,Asp）及γ-氨基丁酸（γ-aminobutyric acid,GABA）的影响.结果 脑出血模型组3天后海马的氨基酸含量（μmol/g）Glu（15.2926±4.2429）、Asp（3.6384±3.1021）和GABA（0.3859±0.1846）含量明显的高于正常组Glu（8.5040±1.7794）、Asp（1.2669±0.4695）和GABA（0.1770±0.0472）和假手术组Glu（8.0057±1.1227）、Asp（1.4986±0.4174）和GABA（0.1829±0.04665）（P＜0.05）,而中药大黄庶虫]虫丸治疗组的Glu（9.0550±1.7195）、Asp（1.8085±0.6862）和GABA（0.1993±0.0424）含量明显降低于脑出血模型组（P＜0.05）.结论 提示大黄庶虫]虫丸能抑制兴奋性氨基酸（Glu、Asp）的释放,纠正兴奋性氨基酸（EAA）/抑制性氨基酸（IAA）失衡,从而达到减轻脑组织损害的作用.

Effect of Dahuang Zhechong Pill on Content of Amino Acids in Hippocampal Tissue of Ischemic Cerebral Hemorrhagic Rats

OBJECTIVE: To observe the effect of Dahuang Zhechong Pill (DZP) on the content of amino acids in hippocampal tissue of model rats of ischemic cerebral hemorrhage (ICH). METHODS: Collagenase and heparin were injected into caudate nucleus to establish ICH rat model. The content of glutamic acid (Glu), aspartic acid (Asp) and gamma-aminobutyric acid (GABA) in hippocampal tissue was detected by anti-phase high-performance liquid chromatographic fluorimetry to observe the effect of DZP on the content of amino acids in brain tissue. RESULTS: Three days after modeling, the content of Glu, Asp and GABA was significantly higher in the model group than those in the sham-operation and the normal control group (P < 0.05), for Glu 15.2926 +/- 4.2429 micromol/g vs 8.0057 +/- 1.1227 micromol/g and 8.5040 +/- 1.7794 micromol/g, for Asp 3.6384 +/- 3.1021 micromol/g vs 1.4986 +/- 0.4174 micromol/g and 1.2669 +/- 0.4695 micromol/g, and for GABA 0.3859 +/- 0.1846 micromol/g vs 0.1829 +/- 0.04665 micromol/g and 0.1770 +/- 0.0472 micromol/g. The content of Glu (9.0550 +/- 1.7195 micromol/g), Asp (1.8085 +/- 0.6862 micromol/g) and GABA (0.1993 +/- 0.0424 micromol/g) in hippocampal tissue in the DZP group was reduced significantly, as compared with that in the model group (P <0.05). CONCLUSION: DZP could reduce the release of excitatory amino acids (EAA-Glu, ASP) to balance EAA/inhibitory amino acid (IAA), so as to relieve ICH-induced brain injury.