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Microbubbles improve myocardial remodelling after infarction
Date:2/21/2013

ts compared the results of the mice treated with the microbubbles to those of a control group. Two weeks after the myocardial infarction, there was expected worsening of heart function in the control group due to the maturing of the scar tissue. In contrast, the mice treated with the microbubbles did not develop any cardiac insufficiency. Jonas Drner, the first author of the study, summarizes the results: "The pumping function was significantly better in the treated animals as compared to the control group; there was also a significantly smaller amount of decayed heart muscle tissue." Along with the Department of Cardiology, the Departments of Cardiac Surgery and Anesthesiology and the Institute of Physiology took part in the investigations.

Ultrasound treatment stimulates growth hormones

The scientists sought the causes of the positive treatment success which is, however, unexplained to date. Following ultrasound treatment of the mice, it was demonstrated that the amount of the body's own growth hormones significantly increased in the heart. "This is evidently the reason why the scar formation decreased as a result of the oscillating microbubbles," says Dr. Ghanem. The scientists now hope that humans will also be able to eventually be treated with the microbubble-ultrasound method, however further investigations are still needed. "Potentially, all patients who have had an acute myocardial infarction are eligible for this follow-up treatment," explains the cardiologist of the Bonn University Hospital. Interestingly, microbubbles are already used as a diagnostic contrast agent.

Patent for novel ultrasound method filed

The study, conducted with support from the BONFOR funding program of the Medical Faculty of Bonn University and the German Heart Foundation [Deutsche Herzstiftung e.V.], gave rise to a patent application. "Together with the company Philips Medical, we developed a novel ultrasonic probe which enables a s
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Contact: Alexander Ghanem
ghanem@uni-bonn.de
49-228-287-15507
University of Bonn
Source:Eurekalert

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