目的:探讨含米托蒽醌脂质体方案治疗高危儿童急性髓系白血病(AML)的安全性与有效性。方法:收集武汉儿童医院2022年1月至2023年2月应用含米托蒽醌脂质体方案治疗的AML高危患儿为观察组,对照组为应用去甲氧柔红霉素方案的AML高危患儿,分...目的:探讨含米托蒽醌脂质体方案治疗高危儿童急性髓系白血病(AML)的安全性与有效性。方法:收集武汉儿童医院2022年1月至2023年2月应用含米托蒽醌脂质体方案治疗的AML高危患儿为观察组,对照组为应用去甲氧柔红霉素方案的AML高危患儿,分析患儿的临床资料,比较两组患儿治疗后骨髓恢复时间、骨髓完全缓解(CR)率,微小残留病灶(MRD)清除率及治疗相关不良反应等临床特性。结果:患儿接受含米托蒽醌脂质体化疗方案在白细胞(17 vs 21 d)、粒细胞(18 vs 24d)、血小板(17 vs 24 d)及血红蛋白(20 vs 26 d)计数恢复时间上均明显优于去甲氧柔红霉素组(P<0.05)。观察组治疗有效率和MRD转阴率分别为90.9%和72.7%,对照组为94.1%和76.4%,均无显著性统计学差异(P>0.05),两组治疗总有效率类似。结论:含米托蒽醌脂质体化疗方案治疗高危儿童AML疗效不劣于去甲氧柔红霉素方案,但骨髓抑制时间明显缩短,安全性好。展开更多
AIM To improve the treatment efficacy of anti tumor drug mitoxantrone, the conjugation of mitoxantrone loaded nanospheres and anti C erbB 2 monoclonal antibodies were prepared. METHODS Mitoxantrone loaded nanospheres ...AIM To improve the treatment efficacy of anti tumor drug mitoxantrone, the conjugation of mitoxantrone loaded nanospheres and anti C erbB 2 monoclonal antibodies were prepared. METHODS Mitoxantrone loaded nanospheres were prepared with emulsion heating solidification technique. A heterobifunctional reagent, N succinimidyl 3 (2 pyridyldithio) propionate (SPDP), was used as the crosslinker of mitoxantrone loaded nanospheres and anti C erbB 2 monoclonal antibodies; pharmaceutical properties of immunonanocapsuls were studied; the conjugates of nanospheres and monoclonal antibodies was confirmed with immunological methods such as slide agglutination test, fluorescent immunossay and rosset formation test, fluorescent staining and scanning electron microscope. RESULTS Mitoxantrone loaded nanospheres were spherical, with smooth surface and median diameter of 0 665 micron. When stored at 3-5, 20-25 and 37℃, RH 75% for three months, the appearance, morphology, size distribution, drug loading and in vitro release characteristics showed no significant change and the stability was satisfactory. The size analysis demonstrated that there was no obvious increase in the particle size of nanoparticles after conjugation. Immunological tests indicate highly selective binding of antibody targeted nanospheres to C erbB 2 overexpressing cells SK BR 3. CONCLUSION The conjugation of mitoxantrone loaded nanospheres and anti C erbB 2 monoclonal antibodies can keep the activity of anti C erbB 2 and increase the therapeutic efficacy of anti mammary cancer drugs.展开更多
文摘目的:探讨含米托蒽醌脂质体方案治疗高危儿童急性髓系白血病(AML)的安全性与有效性。方法:收集武汉儿童医院2022年1月至2023年2月应用含米托蒽醌脂质体方案治疗的AML高危患儿为观察组,对照组为应用去甲氧柔红霉素方案的AML高危患儿,分析患儿的临床资料,比较两组患儿治疗后骨髓恢复时间、骨髓完全缓解(CR)率,微小残留病灶(MRD)清除率及治疗相关不良反应等临床特性。结果:患儿接受含米托蒽醌脂质体化疗方案在白细胞(17 vs 21 d)、粒细胞(18 vs 24d)、血小板(17 vs 24 d)及血红蛋白(20 vs 26 d)计数恢复时间上均明显优于去甲氧柔红霉素组(P<0.05)。观察组治疗有效率和MRD转阴率分别为90.9%和72.7%,对照组为94.1%和76.4%,均无显著性统计学差异(P>0.05),两组治疗总有效率类似。结论:含米托蒽醌脂质体化疗方案治疗高危儿童AML疗效不劣于去甲氧柔红霉素方案,但骨髓抑制时间明显缩短,安全性好。
文摘AIM To improve the treatment efficacy of anti tumor drug mitoxantrone, the conjugation of mitoxantrone loaded nanospheres and anti C erbB 2 monoclonal antibodies were prepared. METHODS Mitoxantrone loaded nanospheres were prepared with emulsion heating solidification technique. A heterobifunctional reagent, N succinimidyl 3 (2 pyridyldithio) propionate (SPDP), was used as the crosslinker of mitoxantrone loaded nanospheres and anti C erbB 2 monoclonal antibodies; pharmaceutical properties of immunonanocapsuls were studied; the conjugates of nanospheres and monoclonal antibodies was confirmed with immunological methods such as slide agglutination test, fluorescent immunossay and rosset formation test, fluorescent staining and scanning electron microscope. RESULTS Mitoxantrone loaded nanospheres were spherical, with smooth surface and median diameter of 0 665 micron. When stored at 3-5, 20-25 and 37℃, RH 75% for three months, the appearance, morphology, size distribution, drug loading and in vitro release characteristics showed no significant change and the stability was satisfactory. The size analysis demonstrated that there was no obvious increase in the particle size of nanoparticles after conjugation. Immunological tests indicate highly selective binding of antibody targeted nanospheres to C erbB 2 overexpressing cells SK BR 3. CONCLUSION The conjugation of mitoxantrone loaded nanospheres and anti C erbB 2 monoclonal antibodies can keep the activity of anti C erbB 2 and increase the therapeutic efficacy of anti mammary cancer drugs.