Duchenne muscular dystrophy is a genetic disorder that is characterized by progressive muscle degeneration and weakness. It is caused by a mutation of the DMD gene that can be inherited in an X-linked recessive fashion. DMD encodes for the muscle protein called dystrophin, and people that are affected with this disorder are not able to make this protein in their muscles (NHGRI, 2014). This disorder moves quickly throughout the body and rapidly gets worse. Of the nine different muscular dystrophy, Duchenne muscular dystrophy is the most common form found in people today (MDA, 2014).
Duchenne muscular dystrophy affects about 1 in every 3,500 live male births, that is nearly 20,000 new cases each year. This disorder primarily affects young boys because of the disorders location on the “X” chromosome, but in very rare cases it does affect young girls but a majority of the time it only allows them to be carriers of the disorder and never show any symptoms. Duchenne muscular dystrophy is not limited to just one race or culture, it affects all races and all cultures. The disorder can be passed down from a parent who has the disorder to their child, but about 35% of children affected with the disorder don’t receive it from their parents. The disorder can occur because of a random mutation on the “X” chromosome, this means that anybody can be affected by this disorder even if it does not run in the family (PPMD, 2014).
Modes of Inheritance
A majority of people diagnosed with Duchenne muscular dystrophy, receive the disorder from their mothers. If the mother is a carrier of the disorder, the son has a 50% chance of having the disease along with any of her daughters, although the daughters woul...
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...uscular dystrophy: MedlinePlus Medical Encyclopedia. (n.d.). Retrieved March 18, 2014, from http://www.nlm.nih.gov/medlineplus/ency/article/000705.htm
"Duchenne Muscular Dystrophy." Muscular Dystrophy Association. Web. 16 Mar. 2014.
Learning About Duchenne Muscular Dystrophy. (n.d.). Retrieved March 16, 2014, from http://www.genome.gov/19518854
Patient.co.uk - Trusted medical information and support. (n.d.). Retrieved March 18, 2014, from http://www.patient.co.uk/doctor/duchenne-muscular-dystrophy
Patient.co.uk - Trusted medical information and support. (n.d.). Retrieved March 16, 2014, from http://www.patient.co.uk/health/duchenne-muscular-dystrophy-leaflet
Signs of Duchenne. (n.d.). Retrieved March 18, 2014, from http://www.parentprojectmd.org/site/PageServer?pagename=Understand_about_signs
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