Duchenne muscular dystrophy is an inherited wasting disease characterized by weakness and progressive degeneration of the muscles, including the heart muscle. It begins in the legs and pelvis, and later affects the whole body. Most people with the disease must use a wheelchair by about age 12.
A Canadian study involving mice shows that anti-impotence pills might protect the hearts of people with a common form of muscular dystrophy, researchers said on Monday.
Canadian researchers gave sildenafil, the active ingredient in drug maker Pfizer Inc's Viagra, to mice with an animal version of Duchenne muscular dystrophy, and found that it improved their heart performance.
They said it would be premature to give Viagra to people with the disease, but said the results indicate the drug potentially could be used to prevent or delay heart failure in children with Duchenne muscular dystrophy.
The mice were given doses of the drug comparable to those administered to treat erectile dysfunction in men. The study, published in the Proceedings of the National Academy of Sciences, showed that sildenafil cut the levels of damage to contracting heart muscle cells.
She said in an interview the drug worked to improve heart performance in the mice by preventing the breakdown of a naturally occurring chemical. Called cyclic guanosine monophosphate, or cGMP, it is involved in a number of cellular signaling pathways, the researchers said.
Other impotence drugs also affect the chemical cGMP, including vardenafil, sold by Schering Plough under the brand name Levitra, and tadalafil, sold by Eli Lilly and Co. under the brand name Cialis.
A Canadian study involving mice shows that anti-impotence pills might protect the hearts of people with a common form of muscular dystrophy, researchers said on Monday.
Canadian researchers gave sildenafil, the active ingredient in drug maker Pfizer Inc's Viagra, to mice with an animal version of Duchenne muscular dystrophy, and found that it improved their heart performance.
They said it would be premature to give Viagra to people with the disease, but said the results indicate the drug potentially could be used to prevent or delay heart failure in children with Duchenne muscular dystrophy.
The mice were given doses of the drug comparable to those administered to treat erectile dysfunction in men. The study, published in the Proceedings of the National Academy of Sciences, showed that sildenafil cut the levels of damage to contracting heart muscle cells.
She said in an interview the drug worked to improve heart performance in the mice by preventing the breakdown of a naturally occurring chemical. Called cyclic guanosine monophosphate, or cGMP, it is involved in a number of cellular signaling pathways, the researchers said.
Other impotence drugs also affect the chemical cGMP, including vardenafil, sold by Schering Plough under the brand name Levitra, and tadalafil, sold by Eli Lilly and Co. under the brand name Cialis.
3 comments:
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