PMID- 30643403 OWN - NLM STAT- MEDLINE DCOM- 20190212 LR - 20220331 IS - 1178-2013 (Electronic) IS - 1176-9114 (Print) IS - 1176-9114 (Linking) VI - 14 DP - 2019 TI - Combination of doxorubicin liposomes with left atrial appendage radiofrequency catheter ablation to reduce post-ablation recovery of electrical conduction. PG - 231-241 LID - 10.2147/IJN.S186267 [doi] AB - AIMS: To determine whether use of radiofrequency catheter ablation (RFCA) combined with intravenously administered liposomal doxorubicin (L-DOX) facilitates a reduction in the recovery of post-ablation electrical conduction. METHODS: Circumferential ablation was performed on the epicardial surface of the left atrial appendage (LAA) in New Zealand White rabbits, and L-DOX was then administered intravenously. Fluorescence spectrophotometry was used to assess reagent bio-distribution, while Western blots and immunohistochemistry were used to assess the localization of the apoptotic markers Bcl-2, Bax, and cleaved CASP3 in the LAA. Liver, kidney, and cardiac functions were also measured to evaluate the safety of this approach. RESULTS: At 1 week and 1 month after RFCA, a pacing electrocardiogram could not be detected in most of the rabbits that had received the combined RFCA and L-DOX therapy. L-DOX began to target the LAA on the second day after RFCA. L-DOX treatment increased the apoptosis of cardiomyocytes in the regions peripheral to the necrotic area induced by RFCA. Doxorubicin had some effect on liver and kidney function, but these effects were reversible and did not affect survival. CONCLUSION: The present results provide evidence that L-DOX treatment can reduce the recovery of electrical conduction after RFCA therapy owing to L-DOX-induced apoptosis of cardiomyocytes in the ablated area and the proximal transition zone of the LAA. FAU - Zhuge, Ying AU - Zhuge Y AD - Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200800, People's Republic of China, onlyfang1@hotmail.com. FAU - Ni, Huan-Er AU - Ni HE AD - Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200800, People's Republic of China, onlyfang1@hotmail.com. FAU - Wang, Yu-Jie AU - Wang YJ AD - Department of Pharmaceutics, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China. FAU - He, Mu-Ye AU - He MY AD - Department of Pharmaceutics, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China. FAU - Wang, Jun-Shan AU - Wang JS AD - Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University, Shanghai 200072, People's Republic of China. FAU - Gao, Feng AU - Gao F AD - Department of Pharmaceutics, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China. AD - Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, People's Republic of China. FAU - Wang, Fang AU - Wang F AD - Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200800, People's Republic of China, onlyfang1@hotmail.com. LA - eng PT - Journal Article DEP - 20181227 PL - New Zealand TA - Int J Nanomedicine JT - International journal of nanomedicine JID - 101263847 RN - 0 (Antibiotics, Antineoplastic) RN - 0 (liposomal doxorubicin) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 80168379AG (Doxorubicin) SB - IM MH - Animals MH - Antibiotics, Antineoplastic/*administration & dosage MH - Atrial Appendage/*physiopathology MH - Atrial Fibrillation/etiology/*prevention & control/surgery MH - Catheter Ablation/*adverse effects MH - Doxorubicin/administration & dosage/*analogs & derivatives MH - Female MH - Male MH - Polyethylene Glycols/administration & dosage MH - Postoperative Complications/*prevention & control MH - Rabbits MH - Treatment Outcome PMC - PMC6312058 OTO - NOTNLM OT - atrial fibrillation OT - doxorubicin OT - liposome OT - radiofrequency catheter ablation OT - recovered electrical conduction COIS- Disclosure The authors report no conflicts of interest in this work. EDAT- 2019/01/16 06:00 MHDA- 2019/02/13 06:00 PMCR- 2018/12/27 CRDT- 2019/01/16 06:00 PHST- 2019/01/16 06:00 [entrez] PHST- 2019/01/16 06:00 [pubmed] PHST- 2019/02/13 06:00 [medline] PHST- 2018/12/27 00:00 [pmc-release] AID - ijn-14-231 [pii] AID - 10.2147/IJN.S186267 [doi] PST - epublish SO - Int J Nanomedicine. 2018 Dec 27;14:231-241. doi: 10.2147/IJN.S186267. eCollection 2019.