【摘 要】
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目的 观察吡非尼酮(PFD)联合阿霉素(DOX)对小鼠H22肝癌移植瘤的协同抗肿瘤作用并探讨可能的作用机制.方法 雄性H22移植瘤模型小鼠40只随机均分为4组,对照组(生理盐水0.25 mL/d)、PFD+DOX末次组[PFD 200 mg/(kg·d),最后一天给DOX]、DOX组(DOX 2.5 mg/kg)、PFD+多次DOX组[PFD 200 mg/(kg·d),隔日在PFD 200 mg/kg给药1 h后给予DOX 2.5 mg/kg],连续15 d;给药周期内隔天称量体重,测量瘤体体积并绘制肿
【机 构】
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贵州医科大学附属医院介入科,贵州贵阳 550004;贵州医科大学药学院,贵州贵阳 550004;贵州医科大学民族药与中药开发应用教育部工程研究中心,贵州 贵阳 550004;贵州医科大学 贵州省药物制
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目的 观察吡非尼酮(PFD)联合阿霉素(DOX)对小鼠H22肝癌移植瘤的协同抗肿瘤作用并探讨可能的作用机制.方法 雄性H22移植瘤模型小鼠40只随机均分为4组,对照组(生理盐水0.25 mL/d)、PFD+DOX末次组[PFD 200 mg/(kg·d),最后一天给DOX]、DOX组(DOX 2.5 mg/kg)、PFD+多次DOX组[PFD 200 mg/(kg·d),隔日在PFD 200 mg/kg给药1 h后给予DOX 2.5 mg/kg],连续15 d;给药周期内隔天称量体重,测量瘤体体积并绘制肿瘤的生长曲线;试验结束后处死小鼠,剥离肿瘤组织并称重,计算抑瘤率和PFD+DOX联用相互作用指数Q值,HE染色法观察各组小鼠H22实体瘤细胞形态,UPLC-MS/MS法测定各组小鼠血浆、肿瘤、心、肝、肾组织中的DOX和阿霉素醇(DOXol)的浓度.结果 PFD+DOX联用Q值为1.47,提示PFD与DOX联用对抑制肿瘤的生长有协同作用;PFD+多次DOX组与DOX组比较,脾脏指数显著上升(P<0.01);与对照组比较,PFD+多次DOX组的肿瘤组织出现大面积空隙,呈现片状坏死或消融现象比DOX组更加明显;与PFD+末次DOX组相比,DOX组血清及各组织中DOX的累积含量显著升高(P<0.01),肿瘤、心、肝、肾及肺组织中DOXol的累积含量显著升高(P<0.01),但在血清中未测到DOXol;与DOX组相比,PFD+多次DOX组肿瘤中DOX和DOXol的浓度增加(P<0.05),可降低心脏组织中DOXol的浓度(P<0.05).结论 PFD与DOX联合应用,对H22移植瘤小鼠有抗肿瘤协同作用,其机制可能与PFD增加肿瘤组织中DOX及DOXol浓度有关.
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