目的：观察海洛因海绵状白质脑病患者的1H-MRS表现，分析其脑内N-乙酰天门冬氨酸、肌酸和胆碱的代谢规律。
OBJECTIVE: To observe the 1H-MRS manifestations of patients with heroin spongiform leucoencephalopathy so as to analyze metabolic regularities of N-acetyl aspartate, creatine and bilineurine in brain.
天冬酰胺是一种非必需的中性晶体氨基酸，许多植物里都有，易于水解为天门冬氨酸。
L - asparagine is a non - essential , neutrall , genetically coded amino acid . it is a crystalline amino acid , found in many plants , that is easily hydrolyzed to aspartic acid.
以L-天门冬氨基酸和硝酸锌为原料合成L-天门冬氨基酸锌螯合物。
The thesis introduced the procedure of synthesizing L-aspartic acid zinc complex with the raw material of L-aspartic acid and Zinc nitrate.
为此，在例如矿物油或合成油类型的基础油中加入了作为添加剂的天门冬氨酸衍生物和多元醇的脂肪酸酯。
To this end an aspartic acid derivative and a fatty acid ester of a polyhydric alcohol are incorporated as additives in a base oil of e. g. mineral oil or synthetic oil type.
的氨基酸天门冬氨酸的家庭。
主要观察指标：病变部位及对侧的N-乙酰天门冬氨酸、胆碱、肌酸代谢率的测定；
MAIN OUTCOME MEASURES: Detection of the metabolic rates of N- acetyl-aspartic acid, choline and creatine in lesion area and the contralateral area;
主要观察指标：病变部位及对侧的N-乙酰天门冬氨酸、胆碱、肌酸代谢率的测定；
MAIN OUTCOME MEASURES: Detection of the metabolic rates of N- acetyl-aspartic acid, choline and creatine in lesion area and the contralateral area;
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