Collagen VI deficiency induces early onset myopathy in the mouse: an animal model for Bethlem myopathy.

@article{Bonaldo1998CollagenVD,
  title={Collagen VI deficiency induces early onset myopathy in the mouse: an animal model for Bethlem myopathy.},
  author={Paolo Bonaldo and Paola Braghetta and Miriam Zanetti and Stefano Piccolo and Dino Volpin and Giorgio M. Bressan},
  journal={Human molecular genetics},
  year={1998},
  volume={7 13},
  pages={
          2135-40
        }
}
To gain insight into the function of type VI collagen, the col6a1 gene was inactivated by targeted gene disruption in the mouse. The homozygous mutants lacked collagen VI in the tissues and showed histological features of myopathy such as fiber necrosis and phagocytosis and a pronounced variation in the fiber diameter. Muscles also showed signs of stimulated regeneration of fibers. Necrotic fibers were particularly frequent in the diaphragm at all ages examined. Similar, although milder… 

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References

SHOWING 1-10 OF 30 REFERENCES
Reduced collagen VI causes Bethlem myopathy: a heterozygous COL6A1 nonsense mutation results in mRNA decay and functional haploinsufficiency.
TLDR
This is the first example of a muscular dystrophy caused by haploinsufficiency of a structural protein or member of the dystrophin-glycoprotein complex, and identifies collagen VI as a critical contributor to cell-matrix adhesion in skeletal muscle.
Type VI collagen mutations in Bethlem myopathy, an autosomal dominant myopathy with contractures
TLDR
Similar to the putative perturbation of the anchoring function of the dystrophin-associated complex in congenital muscular dystrophy with mutations in the α2-subunit of laminin, the observations suggest a similar mechanism in Bethlem myopathy.
The mdx mouse diaphragm reproduces the degenerative changes of Duchenne muscular dystrophy
TLDR
It is proposed that dystrophin deficiency alters the threshold for work-induced injury and provides a quantitative framework for studying the pathogenesis of dystrophy and extend the application of the mdx mouse as an animal model.
Evidence for locus heterogeneity in the Bethlem myopathy and linkage to 2q37.
The Bethlem myopathy, a childhood onset autosomal dominant myopathy with joint contractures, has recently been localized to 21q in a series of Dutch families and the alpha 1 and alpha 2 subunits of
Differential expression of muscular dystrophy in diaphragm versus hindlimb muscles of mdx mice
TLDR
It is demonstrated that DIA is more affected by muscular dystrophy than hindlimb muscles, since many Duchenne patients exhibit respiratory distress, and this differential expression in diaphragm, as compared to limb muscles, may have important clinical implications.
Spatial and temporal changes of typeVI collagen expression during mouse development
TLDR
The data show that type VI collagen is mainly produced by mesenchymal cells and suggest a role for the protein in delineating the boundary of distinct domains in connective tissue and confirm that type VII collagen is preferentially deposited in the pericellular environment.
Benign myopathy, with autosomal dominant inheritance. A report on three pedigrees.
TLDR
No relationship could be found between the siblings of the 3 pedigrees as far back as the beginning of the eighteenth century, and this myopathy seemed to be a new nosological entity.
Spatial and temporal changes of type VI collagen expression during mouse development.
TLDR
The data show that type VII collagen is mainly produced by mesenchymal cells and suggest a role for the protein in delineating the boundary of distinct domains in connective tissue and confirm that type VI collagen is preferentially deposited in the pericellular environment.
Visualization of dystrophic muscle fibers in mdx mouse by vital staining with Evans blue: evidence of apoptosis in dystrophin-deficient muscle.
TLDR
The results indicate that degenerating muscle fibers in the mdx mouse show an increase in membrane permeability and undergo apoptosis.
Stable expression of chicken type-VI collagen α1, α2 and α3 cDNAs in murine NIH/3T3 cells
TLDR
To investigate the behaviour of chicken type VI collagen chains in heterologous host cells as a means to understanding the pattern of assembly of this collagen, transfected murine NIH/3T3 cells with cDNAs encoding chicken α1(VI), α2( VI) and α3(VI) chains.
...
1
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3
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