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Updated: Jun 25, 2026
Introduction to the Ultrasound Targeted Microbubble Destruction Technique
Published on: June 12, 2011
[Targeted delivery of bone marrow mesenchymal stem cells by ultrasound-mediated microbubble destruction]
Yuan-yuan Bai1, Jian-cheng Xiu, Dao-gang Zha
1Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. baiyy1983@163.com
Objective:
To investigate the feasibility of bone marrow mesenchymal stem cell (MSC) transplantation with ultrasound-targeted microbubble destruction.
Methods:
Twenty-one Wistar rats were divided into MSCs-iv group (MSCs-iv), ultrasound+MSCs-iv group (US+MSCs-iv), ultrasound+microbubble+MSCs-iv group (US+MB+MSCs-iv) with intravenous MSC transfer, ultrasound and microbubble treatment as indicated. The skeletal muscles were obtained from the rats for microscopic examination with HE staining. The hindlimb gracilis and semimembranosus muscles were sampled 7 days after MSC transplantation, and the transplanted MSCs were detected by immunohistochemistry. The vital organs were collected from rats in US+MB+MSCs-iv group for immunohistochemistry.
Results:
In US+MB+MSCs-iv group, HE staining demonstrated the presence of red blood cell leakage into the tissue space in the gracilis and semimembranosus muscles, and immunohistochemistry identified large numbers of transplanted MSCs in the the gracilis and semimembranosus muscles and the spleen, whereas no labeled cells were detected in the skeletal muscles in other groups.
Conclusion:
Ultrasound-targeted microbubble destruction provides a useful means for enhancing the efficiency of stem cell transplantation.
