Unclassified polysaccharidosis of the heart and skeletal muscle in siblings

Benedikt Schoser, Claudio Bruno, Hans Christian Schneider, Yoon S. Shin, Teodor Podskarbi, Lev Goldfarb, Wolfgang Müller-Felber, Josef Müller-Höcker

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We describe a 15-year-old boy and his 19-year-old sister with progressive dilated cardiomyopathy and mild non-progressive proximal lower limb myopathy, secondary to the accumulation of amylopectin-like fibrillar glycogen, (polyglucosan) bodies, in heart and skeletal muscle. Evidence of idiopathic amylopectinosis or polysaccharidosis was demonstrated in heart and skeletal muscle tissue by histology, electron microscopy, biochemical, and genetic analysis. In both siblings the heart muscle stored PAS-positive, proteinase-k resistant and partly diastase resistant granulo-filamentous material, simulating polyglucosan bodies. Glycogen branching enzyme activity, and phosphofructokinase enzyme activity, measured in skeletal muscle tissue and explanted heart tissue were all within the normal limits, however glycogen content was elevated. Furthermore, GBE1, PRKAG2, desmin, αβ-crystallin, ZASP, myotilin, and LAMP-2 gene sequencing revealed no mutation, excluding e.g. glycogen storage disease type 4 and desmin-related myofibrillar cardiomyopathies. In both patients the diagnosis of an idiopathic polysaccharidosis with progressive dilated cardiomyopathy was made, requiring heart transplantation at age 13 and 14, respectively. Both patients belong to an autosomal recessive group of biochemically and genetically unclassified severe vacuolar glycogen storage disease of the heart and skeletal muscle. Up to now unidentified glycogen synthesis or glycogen degradation pathways are supposed to contribute to this idiopathic glycogen storage disease.

Original languageEnglish
Pages (from-to)52-58
Number of pages7
JournalMolecular Genetics and Metabolism
Volume95
Issue number1-2
DOIs
Publication statusPublished - Sep 2008

Fingerprint

Glycogen
Muscle
Glycogen Storage Disease Type IV
Siblings
Myocardium
Skeletal Muscle
Desmin
Dilated Cardiomyopathy
1,4-alpha-Glucan Branching Enzyme
Glycogen Storage Disease
Amylopectin
Phosphofructokinases
Muscles
Enzyme activity
Crystallins
Tissue
Muscular Diseases
Heart Transplantation
Amylases
Cardiomyopathies

Keywords

  • Cardiomyopathy
  • Glycogenosis type 4
  • Heart transplantation
  • Idiopathic polysaccharide storage disease
  • Polyglucosan body

ASJC Scopus subject areas

  • Biochemistry
  • Genetics
  • Endocrinology, Diabetes and Metabolism

Cite this

Schoser, B., Bruno, C., Schneider, H. C., Shin, Y. S., Podskarbi, T., Goldfarb, L., ... Müller-Höcker, J. (2008). Unclassified polysaccharidosis of the heart and skeletal muscle in siblings. Molecular Genetics and Metabolism, 95(1-2), 52-58. https://doi.org/10.1016/j.ymgme.2008.07.005

Unclassified polysaccharidosis of the heart and skeletal muscle in siblings. / Schoser, Benedikt; Bruno, Claudio; Schneider, Hans Christian; Shin, Yoon S.; Podskarbi, Teodor; Goldfarb, Lev; Müller-Felber, Wolfgang; Müller-Höcker, Josef.

In: Molecular Genetics and Metabolism, Vol. 95, No. 1-2, 09.2008, p. 52-58.

Research output: Contribution to journalArticle

Schoser, B, Bruno, C, Schneider, HC, Shin, YS, Podskarbi, T, Goldfarb, L, Müller-Felber, W & Müller-Höcker, J 2008, 'Unclassified polysaccharidosis of the heart and skeletal muscle in siblings', Molecular Genetics and Metabolism, vol. 95, no. 1-2, pp. 52-58. https://doi.org/10.1016/j.ymgme.2008.07.005
Schoser, Benedikt ; Bruno, Claudio ; Schneider, Hans Christian ; Shin, Yoon S. ; Podskarbi, Teodor ; Goldfarb, Lev ; Müller-Felber, Wolfgang ; Müller-Höcker, Josef. / Unclassified polysaccharidosis of the heart and skeletal muscle in siblings. In: Molecular Genetics and Metabolism. 2008 ; Vol. 95, No. 1-2. pp. 52-58.
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