青海麝香对人胃癌细胞株裸鼠移植瘤Bcl-2、Bax表达的影响
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摘要
目的探讨青海麝香对人胃癌裸鼠移植瘤Bcl-2及Bax表达的影响及相关机制。方法通过皮下注射细胞悬液建立人胃癌移植瘤模型,将35只裸鼠随机分为模型对照组、氟尿嘧啶组、麝香高剂量组、麝香中剂量组、麝香低剂量组,按照给药方案用药。每用药5d测量一次裸鼠瘤体大小并计算每组平均瘤体积。用药21d后处死动物,剥取肿瘤,计算瘤体质量,免疫组化法检测瘤体组织Bcl-2、Bax的表达。结果与模型对照组相比,给药各组对人胃癌移植瘤生长均出现不同程度的抑制,(P<0.05)。与模型对照组相比,麝香高、中、低剂量组及氟尿嘧啶组的移植瘤质量明显低于模型组,(P<0.05)。麝香高剂量组、麝香中剂量组Bcl-2平均灰度值与模型对照组比较,均显著偏低,(P<0.05);各用药组平均面密度较模型对照组比较,无明显差异,(P>0.05)。麝香高剂量组、麝香中剂量组平均灰度值与模型对照组比较,均显著升高,(P<0.05);麝香各用药组平均面密度较模型对照组均显著增加,(P<0.05)。结论麝香其具有抑制部分肿瘤生长的作用,抑瘤作用机制可能是通过下调肿瘤组织Bcl-2表达活性、上调肿瘤组织Bax表达活性相关。
Objective To investigate the effect of musk onexpressions of human gastric cancer xenografts in nude mice and its mechanism Bcl-2 and Bax and the relevant mechanism. Methods Establish human gastric carcinoma xenograft model by injecting cell suspension in the subcutaneous. The 35 mice were randomly divided into Model group, 5-fluorouracil treatmentgroup, musk high dose group, middle dose group of musk and musk low-dose group.At the same time, they are given the drug based on the dosing regimen medication. When each medication 5dis used, a tumor size measure will be operated on nude mice and calculate the mean tumor volume in each group. Animals were sacrificed after treatment 21 d, stripping tumor, and caculating thetumor mass. Bcl-2 and Bax of tumor tissue expressions will be detected by immunohistochemistry. Results Compared with the model group, the administration of each group has different degreesof inhibition on the growth of human gastric cancer tumor, P <0.05. Compared with the model group, tumor mass is significantly lower in musk high, middle and low-dose group and 5-fluorouracilgroup, P <0.05.The Bcl-2 average gray value in both Musk high dose group and middle dose group musk were more significantly reduced than model group, P <0.05. The average surface density oneach treatment group, has little difference, compared with model control group, P> 0.05. In Musk high dose group and middle dose group musk, average gray value were significantly increased thanmodel group, P <0.05.Among each musk treatment group, the average surface density were significantly increased than the model group P <0.05. Conclusion Muskitself inhibit the growth ofsome tumor. Inhibitory mechanism may be related to tumor tissue by reducing 2 Bcl-expressing tumor activity,and increasing Bax expression activity.
引文
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