Muscular dystrophy: the most effective dietary supplements

Muscular dystrophy refers to a group of neuromuscular diseases characterized by progressive degeneration and weakening of the muscles. These diseases result from genetic abnormalities that affect specific proteins necessary for proper muscle function. Muscular dystrophies are marked by progressive muscle wasting, which leads to loss of motor function​.

Pathophysiology

The pathophysiology of muscular dystrophies varies depending on the specific type of the disease, but it generally involves genetic mutations that cause deficiencies in proteins essential for the structure and function of muscles. For example, in Duchenne muscular dystrophy, a mutation in the DMD gene leads to a deficiency of dystrophin, a key protein for the stability of muscle membranes. The absence or insufficiency of this protein causes weakening of muscle fibers, inflammation, and progressive destruction of the muscles​.

Symptoms

The symptoms of muscular dystrophies vary depending on the type and severity of the disease, but generally include: • Progressive muscle weakness. • Difficulty walking, running, or climbing stairs. • Frequent falls. • Calf swelling (pseudohypertrophy). • Difficulty rising from a sitting or lying position. • Loss of the ability to walk over time, requiring the use of a wheelchair. • Respiratory complications due to weakening of the respiratory muscles. • Cardiac involvement in some cases, such as cardiomyopathy in Duchenne muscular dystrophy.

Causes

Muscular dystrophies are caused by mutations in specific genes that code for proteins necessary for normal muscle function. These mutations can be inherited in different patterns of genetic transmission, including X-linked recessive (as in Duchenne muscular dystrophy) or autosomal dominant or recessive. Each type of muscular dystrophy is associated with particular genetic abnormalities that determine the defective protein and how the disease manifests​.

Management

Management of muscular dystrophies is multidisciplinary and primarily aims to improve quality of life and manage symptoms. Treatment approaches include: • Physical therapy to maintain muscle strength and mobility. • Orthoses and assistive devices to aid mobility. • Respiratory therapy to manage respiratory complications. • Medications such as corticosteroids to slow disease progression (notably in Duchenne muscular dystrophy). • Cardiac monitoring and treatment of cardiac complications. • Surgical interventions to correct musculoskeletal deformities​​.