弓形虫感染鼠肝脾脑微量元素的测定

目的 ]研究感染弓形虫对大鼠肝、脾及脑组织 5种微量元素 (Fe2 +、Cu2 +、Zn2 +、Ca2 +、Mg2 +)的影响。 方法 ]2 0只大鼠随机均分为正常组和感染组。每只大鼠经腹腔注入 2ml含 1 5× 10 6弓形虫速殖子的生理盐水悬液 ,6 4d后将 2组大鼠处死 ,取肝、脾、及脑组织 ,用原子吸收分光光度计测定其微量元素的变化。 结果 ]与正常组相比较 ,感染组肝组织Fe2 +含量明显增加 (P <0 0 1) ,Cu2 +含量明显减少 (P <0 0 5 ) ,而Zn2 +、Ca2 +、Mg2 +的含量变化均无显著差异 ;感染组脾组织Fe2 +、Cu2 +含量明显减少 (P <0 0 1) ,Mg2 +增加 (P <0 0 1) ,Zn2 +、Ca2 +无显著差异 ;感染组脑组织Fe2 +、Cu2 +、Mg2 +含量明显减少 (P <0 0 1) ,Ca2 +增加 (P <0 0 2 ) ,Zn2 +无明显变化。 结论 ]弓形虫感染能引起大鼠肝、脾及脑组织微量元素的改变

ANALYSIS OF TRACE ELEMENTS IN LIVER, SPLEEN AND BRAIN OF RATS INFECTED WITH TOXOPLASMA GONDII

OBJECTIVE: To study the level of five trace elements(Fe2+, Cu2+, Zn2+, Ca2+, Mg2+) in the liver, spleen and brain of the rats infected with Toxoplasma gondii. METHODS: 20 rats were randomly and equally divided into two groups: normal group and experimental group. On the 64th day after injection of 1.5 x 10(6) T. gondii/2 ml, all of the rats were killed and the atomic absorption method were used. RESULTS: Compared with the normal group, the level of Cu2+ in liver in experimental group was significantly reduced (P < 0.01), and the amount of Fe2+ of sick rats were higher than that of the normal (P < 0.01). No differences in the content of Zn2+, Ca2+, Mg2+ between the experimental and control group were determined; the level of Fe2+, Cu2+ in spleen in experimental group was significantly altered (P < 0.01). The amount of Mg2+ of sick rats were higher than that of the normal (P < 0.01), and no difference on the content of Zn2+, Ca2+ between the experimental and control group were estimated; the level of Fe2+, Cu2+, Mg2+ in brain in experimental group was significantly reduced (P < 0.01). The amount of Ca2+ of sick rats were higher than that of the normal (P < 0.02). No difference on the content of Zn2+ between the experimental and control group were estimated. CONCLUSION: T. gondii infection might cause changes in trace elements in the liver, spleen and brain of rats.