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目的: 分离伯氏疟原虫敏感株( C S) 与抗氯喹株的氯喹(chloroquine C Q) 结合蛋白。方法: 给两株感染鼠ig C Q400 mg/kg , 3 h 后, 收集伯氏疟原虫用( Ultrogel R) Ac A34 凝胶柱分离蛋白, 按 Bergqvist 法抽提与蛋白结合的 C Q, 然后用 H P L C ( 外标法) 定量。结果: C S 有58 个蛋白峰, 均与 C Q 结合, 其中以 No64 ~86部分( 峰9) 结合的 C Q 量最多, 占总结合量的164 % 。抗氯喹伯氏疟原虫( C R) 有40 个蛋白峰, 除8 个峰外,均与 C Q 结合, 结合量最多的蛋白部分与 C S相同, 在 No60 ~83 部分( 峰6 及峰7) , 但是它与 C Q 的结合能力( C Qnmol/ mg 蛋白) 显著高于 C S。结论: 分离与测定了 C S和 C R 两株疟原虫各个蛋白峰的分布与定量, 及其与 C Q 结合的能力。在同一株疟原虫中, 各蛋白与 C Q 的结合能力存有差异, 在 C S与 C R 间此差异更大。
OBJECTIVE: To isolate the chloroquine C Q-binding protein of Plasmodium berghei (C S) and chloroquine resistant strains. Methods: Two strains infected with ig C Q400 mg / kg were inoculated for 3 h. The plasmids were isolated from Ultrogel R Ac A34 gel column and the protein-bound C Q was extracted by Bergqvist method. H P L C (external standard method) quantitative. Results: There were 58 protein peaks in C S, all of which were bound to C Q. Among them, No.6 ~ 86 (peak 9) had the highest amount of C Q, accounting for 164% of the total. There were 40 protein peaks in C R, except for 8 peaks, all bound to C Q. The most abundant protein part was the same as that of C S. In No 60 ~ 83 (peak 6 and Peak 7) but its binding capacity to C Q (C Qnmol / mg protein) was significantly higher than that of C S. Conclusion: The distribution and quantitation of each protein peak of C and C R and the ability of binding to C Q were isolated and determined. In the same strain of Plasmodium, there is a difference in the binding capacity of each protein to C Q, and this difference is greater between C S and C R.