Combined radiofrequency ablation and adjuvant liposomal chemotherapy: Effect of chemotherapeutic agent, nanoparticle size, and circulation time

被引:61
作者
Ahmed, M
Lukyanov, AN
Torchilin, V
Tournier, H
Schneider, AN
Goldberg, SN
机构
[1] Harvard Univ, Sch Med, Beth Israel Deaconess Med Ctr, Dept Radiol,Lab Minimally Invas Tumor Therapy, Boston, MA 02215 USA
[2] Northeastern Univ, Bouve Coll Pharm, Boston, MA 02115 USA
[3] Bracco Res, Geneva, Switzerland
关键词
D O I
10.1097/01.RVI.0000175324.63304.25
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
PURPOSE: To evaluate the effects of liposomal chemotherapeutic agent, nanoparticle size, and liposome circulation time on tissue coagulation and intraturnoral drug uptake when radiofrequency (RF) ablation is combined with adjuvant intravenous liposomal chemotherapy in an animal breast tumor model. MATERIALS AND METHODS: Ninety-one R3230 mammary adenocarcinoma nodules were implanted in 48 Fischer rats. First, standardized RF ablation was combined with intravenous liposomal doxorubicin, cisplatin, or 5-fluorouracil (35 tumors each). Second, three different-sized doxorubicin-containing nanoparticle preparations were combined with standardized RF ablation. Last, two doxorubicin-containing liposome preparations with different blood elimination half-lives were combined with RF ablation. Coagulation diameter and interstitial doxorubicin concentration were measured 48 hours after treatment and compared with use of statistical analysis. RESULTS: All combinations of RF with liposomal chemotherapy caused significantly greater tumor necrosis than RF alone (P < .05). Significantly increased necrosis was observed with intravenous liposomal RF/doxorubicin and RF/cisplatin compared with intravenous liposomal RF/5-fluorouracil (P < .01). Greater coagulation was observed with RF combined with 100-mn nanoparticles compared with 20-mn or 250-nm nanoparticles (P = .01 and P =.04, respectively). Additionally, greater intratumoral doxorubicin uptake was observed in the group treated with 20-nm nanoparticles compared with those treated with other sizes of nanoparticles (P < .05). RF plus liposomal doxorubicin produced greater coagulation and intraturnoral doxorubicin uptake than RF plus 1,2-dipalmitoyl-sn-glycero-3-phosphatidic acid (P < .05). CONCLUSION: When combined with RF ablation, modification of adjuvant intravenous liposomal chemotherapy, including nartoparticle size, circulation time, and chemotherapeutic agent, can influence intratumoral drug accumulation and tissue coagulation.
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收藏
页码:1365 / 1371
页数:7
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