Kappa－硒化卡拉胶对阿霉素毒性的预防作用

Protective action of Kappa-selenocarrageenan on toxicity of adriamycin

Ｋａｐｐａ－硒化卡拉胶给大鼠ｉｇ５．１５．４５ｍｇ·ｋｇ－１．ｇｄ．共１４次．在１５．４５ｍｇ·ｋｇ－１剂量组能显著提高注射阿霉素（ｉＰ３ｍｇ·ｋｇ－１，隔日１次．共４次）之大鼠全血谷胱甘肽过氧化物酶活性（Ｐ＜０．０５）．在３个剂量组不同程度改善心电图变化。对阿霉素引起的白细胞、血小板的减少也有抑制（Ｐ＜０．０５或Ｐ＜０．０１）．大剂量卡拉胶组．还可改善阿霉素所致心脏与肝脏的形态改变。Ｐ＜０．０１表３各组大鼠血小板计数值（×１０９·Ｌ－１，）各组均与阿霉素组比较．＊Ｐ＜０．０５，Ｐ＜０．０１＊Ｐ＜０．００１２．２，４对心及肝脏病理切片形态观察给药结束后第５周处死动物，取心、肝脏以３．３×１０３μｍｏｌ·Ｌ－１福尔马林固定，石蜡切片（５μｍ厚），ＨＥ染色，光镜检查。结果表明，阿霉素对心脏有明显的毒性作用，表现为心肌明显的空泡变，灶性肌溶解，而加亚硒酸钠和Ｋａｐｐａ－硒化卡拉胶，其变性程度及范围有改善，表现为肌细胞空泡变性及肌溶解的数量有较明显的减少。阿霉素对肝脏的毒性作用，表现为肝细胞明显的空泡变性及少量的点状坏死，如用硒化卡拉胶或亚硒酸钠肝细胞变性范围程度有不同改善，表现为空泡变性范围缩小，点状坏死减少，尤?

The protective action of Kappaselenocarrageenan (K-SeC) on toxicity of adriamycin was studied. After rats were given ig 5,15 and 45 mg·kg-1·d-1×14 d and even other day given ip adriamycin for 4 times, the blood GSH-Px activeties were significantly elevated (P<0.05), during first week in 15 and 4o mg·kg-1 dose k-SeC groups. ECG were improved in variant degrees for the all three K-SeCgroups. Decreasing of WBC and blood plateletscaused by adriamycin was also significantly prevented (P<0.05 or P<0. 01).And improvement of liver and heart morphology was observed in the large dose K-SeC group.