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Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells
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Respiratory dysfunction in myotonic dystrophy type 1: A systematic review.

A M Hawkins1, C L Hawkins2, K Abdul Razak1

  • 1School of Medicine, Griffith University, Gold Coast, Queensland, Australia; Department of Medicine, Logan Hospital, Meadowbrook, Queensland, Australia.

Neuromuscular Disorders : NMD
|February 16, 2019
PubMed
Summary
This summary is machine-generated.

Respiratory dysfunction is common in myotonic dystrophy type 1 (DM1), often causing breathing difficulties and sleep disturbances. However, the link between genetics and symptom severity remains unclear, and the natural history of decline is poorly understood.

Keywords:
Cytosine-Thymine-Guanine (CTG)Myotonic dystrophyMyotonic dystrophy type 1Respiratory dysfunctionSpirometry

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Area of Science:

  • Neurology
  • Pulmonology
  • Genetics

Background:

  • Myotonic dystrophy type 1 (DM1) is a prevalent adult-onset muscular dystrophy.
  • Respiratory dysfunction is a significant complication in DM1 patients.
  • Understanding respiratory involvement is crucial for patient management.

Purpose of the Study:

  • To review the natural history of respiratory dysfunction in DM1.
  • To examine the roles of central respiratory drive and peripheral muscles.
  • To investigate the relationship between CTG repeat length and respiratory function.

Main Methods:

  • Systematic literature review.
  • Included studies reporting spirometry on ≥10 DM1 patients.
  • Analyzed 55 articles published between 1964 and 2017.

Main Results:

  • Respiratory dysfunction, typically restrictive, is common in DM1, leading to hypoventilation, hypercapnia, and sleep disorders.
  • No consensus exists on the correlation between CTG repeat length and respiratory dysfunction severity.
  • The natural history and progression of respiratory decline in DM1 are poorly characterized.
  • Central respiratory drive significantly contributes to hypoventilation, but mechanisms are unidentified.

Conclusions:

  • Respiratory dysfunction is a hallmark of DM1, impacting ventilation and sleep quality.
  • Genetic factors (CTG repeat length) do not reliably predict respiratory severity.
  • Further research is needed to elucidate the natural history and underlying mechanisms of respiratory impairment in DM1.