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ALS - Motor Neuron Disease: Mechanism and Development of New Therapies
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Meester-Loeys Syndrome.

Josephina A N Meester1, Pauline De Kinderen1, Aline Verstraeten1

  • 1Center for Medical Genetics, Antwerp University Hospital/University of Antwerp, Antwerp, Belgium.

Advances in Experimental Medicine and Biology
|November 22, 2021
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Summary
This summary is machine-generated.

Meester-Loeys syndrome, an X-linked condition, causes thoracic aortic aneurysms and affects multiple organ systems. Caused by BGN gene mutations, it presents with early-onset aortic dissections, particularly in males.

Keywords:
Aortic dissectionBiglycanConnective tissue disorderLoeys-Dietz syndromeLoss-of-function mutationsMarfan syndromeMeester-Loeys syndromeThoracic aortic aneurysm

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Area of Science:

  • Genetics and Molecular Biology
  • Cardiovascular Medicine
  • Syndromology

Background:

  • Meester-Loeys syndrome is an X-linked syndromic thoracic aortic aneurysm impacting cardiovascular, skeletal, craniofacial, cutaneous, and neurological systems.
  • It shares clinical features with Marfan syndrome and Loeys-Dietz syndrome.
  • Aortic dissections are a significant concern, occurring at young ages, predominantly in males.

Purpose of the Study:

  • To elucidate the genetic basis and clinical manifestations of Meester-Loeys syndrome.
  • To investigate the functional consequences of BGN gene mutations.
  • To identify potential therapeutic targets for preventive interventions.

Main Methods:

  • Genetic analysis to identify mutations in the BGN gene.
  • Clinical phenotyping of affected individuals across multiple organ systems.
  • Biochemical assays to assess the impact of mutations on biglycan function and TGF-β signaling.

Main Results:

  • Loss-of-function mutations in the BGN gene are identified as the cause of Meester-Loeys syndrome.
  • The syndrome affects multiple organ systems, with a high risk of early-onset aortic dissections.
  • Elevated TGF-β signaling is observed in association with BGN mutations.

Conclusions:

  • Meester-Loeys syndrome is a distinct genetic disorder caused by BGN mutations.
  • Understanding the pathophysiology, including increased TGF-β signaling, is crucial for developing treatments.
  • Further research into functional consequences may lead to novel preventive therapeutic strategies.