硝酸铈对小鼠非特异性免疫功能的影响研究

［目的］探讨稀土元素对动物非特异性免疫功能的影响机制及其有效剂量。［方法］将试验小鼠随机平均分为4组，分别饲喂蒸馏水和低（2 mg/kg）、中（20 mg/kg）、高（200 mg/kg）剂量的硝酸铈溶液，50 d后测定和比较其免疫指标。［结果］对照组和低、中、高剂量组小鼠的外周血白细胞总数分别为（5.60±1.13）×109、（7.20±1.36）×109、（9.42±2.48）×109和（8.62±2.72）×109/L，表明硝酸铈可提高小鼠的外周血白细胞总数。4组小鼠的校正廓清指数分别为6.167 4±0.256 8、5.557 3±0.184 3、10.210 6±2.084 6和9.237 3±1.918 7，表明硝酸铈可提高小鼠的碳粒廓清指数。4组小鼠的脾指数为3.074 3±0.319 2、4.275 4±1.400 2、4.907 8±1.342 3和3.655 9±1.150 8，胸腺指数分别为2.217 8±0.815 6、2.341 4±1.026 7、3.695 3±0.582 1和2.868 3±0.707 3，表明硝酸铈可提高小鼠的脾指数和胸腺指数。［结论］口服硝酸铈可显著提高小鼠的非特异性免疫力，以中等剂量的效果最为显著。

Research on the Influence of Cerium Nitrate on the Non-specific Immune Function of Mice

[Objective] The research aimed to discuss the influencing mechanism of a rare-earth element on the non-specific immune function of animals and its effective dose.[Method] The tested mice were divided into 4 groups randomly and averagely,they were fed with distilled water and low-(2 mg/kg),middle-(20 mg/kg) and high-dose(200 mg/kg) cerium nitrate solutions resp.After 50 d,their immune indices were determined and compared.[Result] The peripheral WBC counts of mice in control group and low-,middle-and high-dos...