Thromb Haemost 2019; 119(11): 1752-1766
DOI: 10.1055/s-0039-1695767
Coagulation and Fibrinolysis
Georg Thieme Verlag KG Stuttgart · New York

Magnetic Targeting Improves the Therapeutic Efficacy of Microbubble-Mediated Obstructive Thrombus Sonothrombolysis

Xiaoqiang Chen
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Weilan Wu
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Shifei Wang
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Jiayuan Zhong
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Nima Moumin Djama
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Guoquan Wei
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Yanxian Lai
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Xiaoyun Si
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Shiping Cao
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Wangjun Liao
2  Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Yulin Liao
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
,
Hairui Li
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
3  Department of Cardiology, the First Affiliated Hospital of Jinan University, Guangzhou, China
,
Jianping Bin
1  Department of Cardiology, State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
› Institutsangaben
Funding This work was supported by grants awarded to Jianping Bin from the National Natural Science Foundation of China (No. 81771857 and No. 81571698) and the Guangzhou Regenerative Medicine and Health Laboratory of Guangdong (2018GZR110105009).
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Publikationsverlauf

02. Februar 2019

05. Juli 2019

Publikationsdatum:
02. September 2019 (eFirst)

Abstract

Background Magnetic targeting may help microbubbles (MBs) reach obstructive thrombi and improve the efficacy of MB-mediated sonothrombolysis, but the role of magnetic targeting in MB-mediated sonothrombolysis remains elusive.

Objectives We investigate the feasibility and efficacy of magnetically targeted MB-mediated sonothrombolysis for the treatment of obstructive thrombi.

Materials and Methods Red and white thromboembolic models were established in vitro and in vivo. The models were randomly assigned to the control, ultrasound plus control MB (US + C-MB), ultrasound plus magnetic MB (US + M-MB), or US + M-MB + recombinant tissue-type plasminogen activator (r-tPA) groups and treated for 30 minutes. The recanalization rate, average blood flow velocity, hindlimb perfusion, and skeletal muscle injury marker levels were recorded.

Results The recanalization rate, average blood flow velocity, and hindlimb perfusion in the red and white thromboembolic models were all significantly higher in the US + M-MB and US + M-MB + r-tPA groups than in the control and US + C-MB groups both in vitro and in vivo. Moreover, the levels of the skeletal muscle injury markers were all significantly lower in the US + M-MB and US + M-MB + r-tPA groups than in the other two groups in vivo for both thromboembolic models. However, the thrombolytic effects of red thrombi performed better than those of white thrombi in the US + M-MB + r-tPA group.

Conclusion M-MB-mediated sonothrombolysis improves the efficacy of thrombolysis both in vitro and in vivo, and reduces tissue damage in clogging model; thus, this method may serve as a promising approach for treating thrombus-occlusive diseases.

Authors' Contributions

X.C. and W.W. performed the experiments and analyzed the data; S.W., J.Z., and N.M.D. wrote the article; G.W., Y.L., and X.S. analyzed the data; S.C., W.L., and Y.L. provided intellectual review of the article; H.L. and J.B. designed and directed the research.


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