康莱特注射液与化疗药合用对裸鼠移植人肺癌A549抑瘤作用的研究

目的比较康莱特注射液与几种化疗药合用对裸鼠移植人体肺癌A549的抑瘤增效作用。方法96只裸鼠皮下接种人体肺癌A549,7d后成型随机盲法分为16组(n=6),按文中方案给抗肿瘤药,另设正常对照组(n=12)。康莱特注射液组给药剂量分别为1.25g/kg,2.5g/kg,5.0g/kg,自接种后第7天起连续给药10次,iv;顺铂(1.5/kg,3mg/kg)和健择(30mg/kg,60mg/kg)在接种后10日1次腹腔给药,顺铂给药后4h再给予健择;泰素帝(25mg/kg)在接种后7日1次腹腔给药。接种后19日脱颈处死动物,称体重,解剖取瘤块,称瘤重,计算抑瘤率。结果康莱特注射液1.25、2.5、5.0g/kg3个剂量分别合并顺铂(3mg/kg)和健择(60mg/kg)对人体肺癌A549的生长有很强的抑制作用,抑瘤率高于康莱特注射液、顺铂和健择单独给药;康莱特注射液3个剂量分别合并顺铂(1.5mg/kg)和健择(30mg/kg)对人体肺癌A549的生长也有很强的抑制作用,抑瘤率不仅高于康莱特注射液、顺铂和健择单独给药,且有一定的协同作用;康莱特注射液3个剂量分别合并泰素帝(25mg/kg)对人体肺癌A549的生长有明显的抑制作用,抑瘤率高于康莱特注射液、泰素帝单独给药。结论康莱特注射液与顺铂和健择或泰素帝联合用药可明显缩小肿瘤体积,有抑瘤增效的协同作用。

Effects of herpes simplex virus thymidine kinase/acyclovir system on growth of human pulmonary adenocarcinoma A549 cell line in vitro and in vivo

Objective: To observe the effect of anciclovir (ACV) treatment on tumors induced by inoculation of TK gene-transfected human pulmonary adenocarcinoma A549 cells in nude mice. Methods: A recombinant plasmid containing TK gene was constructed and transfected into A549 cells by electroporation. The sensitivity of the transgenic cells (A549-TK) to ACV was examined by MTT assay in vitro and for in vivo observation, inoculation of A549-TK and A-549 cells into nude mice was separately performed to induce tumor growth, the response of which to ACV treatment was observed, and the tumor tissues were pathologically examined. Results: A recombinant plasmid containing TK gene was successfully constructed and transfected into A549 cells. The sensitivity of A549-TK cells to ACV was 43 times higher than that of A549 cells. The tumors induced by A549-TK cells showed no significant increase in size after ACV treatment (P>0. 05) , and light microscopy revealed local tissue necrosis, karyoklasis, and nuclei disappearance. Conclusion: A549-TK cells acquires sensitivity to ACV both in vitro and in vivo, and ACV can inhibit the growth of tumors induced by A549-TK cell inoculation in nude mice.

蒿甲醚粉针剂对裸鼠体内移植人肺腺癌A549的抑制作用

目的探讨蒿甲醚粉针剂对裸鼠体内移植人肺腺癌A549的抑制作用。方法选取雌性裸鼠32只,将其随机分为对照组,低、中、高剂量组,各8只。裸鼠接种人肺腺癌A549细胞24 h后,高剂量组给予蒿甲醚粉针剂120 mg/kg、中剂量组为80 mg/kg、低剂量组为54 mg/kg,对照组给予0.9%氯化钠溶液10 mg/kg,连续给药12 d后处死裸鼠,剖取肿块称质量,计算抑瘤率。结果 4组抑瘤率比较,差异有统计学意义(P<0.05),其中高剂量组抑瘤率高于低、中剂量组(P<0.05),低、中剂量组抑瘤率比较,差异无统计学意义(P>0.05)。结论裸鼠腹腔连续注射蒿甲醚粉针剂对人肺腺癌A549有抑制作用,随着剂量的增加抑制作用越强。