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Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Adeno-associated virus serotype-9 microdystrophin gene therapy ameliorates electrocardiographic abnormalities in mdx mice.
Human Gene Therapy 2008 August
Adeno-associated virus (AAV)-mediated microdystrophin gene therapy holds great promise for treating Duchenne muscular dystrophy (DMD). Previous studies have revealed excellent skeletal muscle protection. Cardiac muscle is also compromised in DMD patients. Here we show that a single intravenous injection of AAV serotype-9 (AAV-9) microdystrophin vector efficiently transduced the entire heart in neonatal mdx mice, a dystrophin-deficient mouse DMD model. Furthermore, microdystrophin therapy normalized the heart rate, PR interval, and QT interval. The cardiomyopathy index was also significantly improved in treated mdx mice. Our study demonstrates for the first time that AAV microdystrophin gene therapy can ameliorate the electrocardiographic abnormalities in a mouse model for DMD.
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