title: Crystalline aggregates of protein-glycogen complexes (alias 'virus-like particles') in skeletal muscle: report of a case and review of the literature.
abstract: Crystalline arrays of so-called 'virus-like particles' were found in post-mortem samples of skeletal muscle obtained from an 11-month-old female infant. In a large number of skeletal muscle fibres crystalline inclusions were abundant, variously configurated and positively stained with a cytochemical method for polysaccharides. A battery of enzymatic tests, including some with diastase and alpha-amylase, was, however, entirely noncontributory. A muscle biopsy studied 5 months before death had disclosed no crystalline inclusions of any kind. The literature concerning similar cases of 'virus-like particles', crystalline glycogen aggregates or protein-glycogen complexes in muscle is reviewed. Possible reasons underlying the aggregation of protein-glycogen complexes into crystalline arrays are discussed.
mesh_terms: D005260:Female; D006003:Glycogen / Q000378:metabolism; D006801:Humans; D007181:Inclusion Bodies, Viral / Q000648:ultrastructure*; D007223:Infant; D008854:Microscopy, Electron; D009122:Muscle Hypertonia / Q000382:microbiology / Q000473:pathology; D009123:Muscle Hypotonia / Q000382:microbiology / Q000473:pathology; D009132:Muscles / Q000382:microbiology* / Q000473:pathology; D009468:Neuromuscular Diseases / Q000382:microbiology / Q000473:pathology; D014764:Viral Proteins / Q000378:metabolism; D014771:Virion / Q000648:ultrastructure*
chemical_list: D014764:Viral Proteins; D006003:Glycogen