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Muscular Dystrophy Givinostat Drug can Help Treat Heart Failure

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Muscular Dystrophy Givinostat Drug can Help Treat Heart Failure

  • Givinostat, new muscular dystrophy drug can help treat heart failure with preserved ejection fraction (HFpEF).
  • HFpEF occurs due to defective heart relaxation
  • After drug intake, cardiac relaxation without altering blood pressure was observed
Givinostat, a new drug used for muscular dystrophy can help the heart relax properly as in case of diastolic dysfunction (heart relaxation abnormality), the heart is unable to relax. If not treated this dysfunction can lead to heart failure. The findings of this study are published in the Journal of Science Translational Medicine.

Heart failure with preserved ejection fraction (HFpEF) refers to cases where the heart can pump blood normally but is not able to fill as efficiently as a healthy heart. Millions of people worldwide suffer from HFpEF, which can be caused by hypertension, diabetes, aging or other conditions. Individuals with HFpEF die at an alarming rate and, unfortunately, there are no effective drugs to treat this form of heart failure.

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By studying of the hearts of patients with diastolic dysfunction and HFpEF, the research team found that fibrosis, the commonly suspected culprit in these cases, is not the sole cause of diastolic dysfunction. Instead, their findings indicated that there was a defect in the ability of the muscle cells of the heart to relax.

To address whether this defect in the muscle cells could be treated, the researchers, led by CU faculty members Mark Y. Jeong, MD, assistant professor of medicine, and Timothy A. McKinsey, Ph.D., associate professor of medicine, tested whether givinostat might improve the heart's ability to relax in the face of hypertension or aging.
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They found that the investigational drug, tested in rat and mouse models, helped the heart relax properly. Thus, the findings hold promise for treating patients with diastolic dysfunction and HFpEF.

"These are exciting findings because we may be able to help patients with a form of heart failure that has been recalcitrant to standard-of-care therapies," said McKinsey. "Givinostat is currently in clinical development for the treatment of muscular dystrophy. Our data suggest the possibility that givinostat could be 'repurposed' for the treatment of HFpEF.

Obviously, it is early days, but we are excited to test givinostat in a large animal model of HFpEF as the next step toward translating our findings to humans. Our data also reveal relaxation impairment of muscle cells as a previously unrecognized process that contributes to diastolic dysfunction of the heart. Thus, other therapeutic strategies that improve this defect could also be useful for the treatment of HFpEF".

Reference
  1. Mark Y. Jeong, Ying H. Lin, Sara A. Wennersten,et.al. Histone deacetylase activity governs diastolic dysfunction through a nongenomic mechanism, Science Translational Medicine (2018).DOI: 10.1126/scitranslmed.aao0144


Source: Eurekalert
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