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Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
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[Update on Duchenne muscular dystrophy].

F Leiva-Cepas1, A Montaño Martínez2, I López-López3

  • 1Departamento de Ciencias Morfológicas, Sección de Histología, Facultad de Medicina y Enfermería, Universidad de Córdoba, Córdoba, España; Unidad de Gestión Clínica de Anatomía Patológica, Hospital Universitario Reina Sofía, Córdoba, España; Grupo de Investigación en Regeneración Muscular (REGMUS), Código PAIDI: CTS-285, Córdoba, España; Grupo GC-12 de Investigación Epidemiológica en Atención Primaria, Instituto Maimónides de Investigación Biomédica de Córdoba, Córdoba, España.

Semergen
|August 21, 2021
PubMed
Summary
This summary is machine-generated.

Duchenne muscular dystrophy (DMD) is a rare genetic disorder affecting multiple organs, with symptoms appearing in childhood. While no cure exists, treatments are improving life expectancy for individuals with this progressive neuromuscular disease.

Keywords:
Distrofia muscular de DuchenneDuchenne muscular dystrophyEnfermedad ligada al XEsteroidesRecomendacionesRecommendationsSteroidsX-linked disease

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Area of Science:

  • Genetics and Molecular Biology
  • Neurology
  • Pediatrics

Background:

  • Duchenne muscular dystrophy (DMD) is an X-linked autosomal recessive myopathy with a low incidence (1/3300).
  • It presents with significant clinical variability and multi-organ involvement, including neuromuscular, respiratory, digestive, and metabolic systems.
  • Symptoms typically manifest in childhood, leading to mobility limitations and early respiratory complications.

Purpose of the Study:

  • To highlight the significant clinical variability and multi-organ involvement in Duchenne muscular dystrophy.
  • To emphasize the critical role of Primary Care Physicians (PCPs) in managing DMD complications.
  • To discuss current therapeutic approaches and their impact on life expectancy.

Main Methods:

  • Review of existing literature on Duchenne muscular dystrophy.
  • Analysis of clinical presentation, progression, and management strategies.
  • Emphasis on the multidisciplinary approach to patient care.

Main Results:

  • Respiratory complications significantly reduce life expectancy in DMD patients.
  • Corticosteroids and emerging gene therapies are extending the lifespan of individuals with DMD.
  • The PCP plays a crucial role in coordinating care and managing complications.

Conclusions:

  • Duchenne muscular dystrophy is a complex, multi-system disorder requiring lifelong management.
  • Early diagnosis and proactive management by PCPs are essential for improving patient outcomes.
  • Ongoing research in gene therapy offers hope for more effective treatments in the future.