Myotonic Muscular Dystrophy (MMD)

MMD1 Research: Iplex Shows Limited Benefit

The drug Iplex, developed by the Richmond, Va., biopharmaceutical company Insmed, did not improve muscle function, strength or endurance in a phase 2 trial in type 1 myotonic dystrophy (MMD1, or DM1), the company announced June 25, 2009. (See Insmed Announces Results.)

Iplex Shows Limited Benefit in MMD1

The drug Iplex, developed by the Richmond, Va., biopharmaceutical company Insmed, did not improve muscle function, strength or endurance in a phase 2 trial in type 1 myotonic dystrophy (MMD1, or DM1), the company announced June 25, 2009. (See Insmed Announces Results.)

MMD: Insmed Announces Results

RICHMOND, VA., June 25, 2009 - Insmed Inc. (NASDAQ CM: INSM), a biopharmaceutical company, today announced results from its exploratory U.S. Phase II clinical trial evaluating IPLEX™ (mecasermin rinfabate) in patients with myotonic muscular dystrophy (“MMD”).  The randomized, double-blind, placebo-controlled Phase II trial conducted in 13 centers across the U.S.

Three-Protein Repair Cluster Identified

Scientists in the United States and Japan have identified a three-protein cluster that reseals damaged muscle-fiber membranes. The findings, published June 5, 2009, in the Journal of Biological Chemistry, could have implications for development of treatments for muscular dystrophies.




MD Research: Muscle-Repair Booster

In experiments in mice, Michael Rudnicki, an MDA grantee at the Sprott Center for Stem Cell Research at Ottawa Hospital Research Institute (OHRI), and colleagues, found the WNT7a protein stimulates muscle repair by causing proliferation (an increase in number) of "satellite stem cells." They say the protein probably operates similarly in humans. The findings were published June 5, 2009, in the journal Cell Stem Cell.

Silencing Toxic Genes

A new gene therapy approach to "silencing" disease-causing genetic information has been developed by researchers at Rutgers University in Piscataway, N.J., and Integrated DNA Technologies in Coralville, Ia.

MMD Research: Drug Development?

The identification of small molecules that can block the genetic defect that causes type 1 myotonic dystrophy (MMD1, or DM1) may be the first step toward developing a new drug treatment for the disease, say researchers at the University of Rochester (N.Y.) Medical Center (URMC).

The abnormality that underlies MMD1 is a stretch of genetic material derived from DNA on chromosome 19 that contains more than the usual number of a repeating chemical sequence known as a CUG (cytosine, uracil, guanine) triplet repeat.

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