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lüll Caveolinopathies: from the biology of caveolin-3 to human diseases Gazzerro E; Sotgia F; Bruno C; Lisanti MP; Minetti CEur J Hum Genet 2010[Feb]; 18 (2): 137-45In muscle tissue the protein caveolin-3 forms caveolae--flask-shaped invaginations localized on the cytoplasmic surface of the sarcolemmal membrane. Caveolae have a key role in the maintenance of plasma membrane integrity and in the processes of vesicular trafficking and signal transduction. Mutations in the caveolin-3 gene lead to skeletal muscle pathology through multiple pathogenetic mechanisms. Indeed, caveolin-3 deficiency is associated to sarcolemmal membrane alterations, disorganization of skeletal muscle T-tubule network and disruption of distinct cell-signaling pathways. To date, there have been 30 caveolin-3 mutations identified in the human population. Caveolin-3 defects lead to four distinct skeletal muscle disease phenotypes: limb girdle muscular dystrophy, rippling muscle disease, distal myopathy, and hyperCKemia. In addition, one caveolin-3 mutant has been described in a case of hypertrophic cardiomyopathy. Many patients show an overlap of these symptoms and the same mutation can be linked to different clinical phenotypes. This variability can be related to additional genetic or environmental factors. This review will address caveolin-3 biological functions in muscle cells and will describe the muscle and heart disease phenotypes associated with caveolin-3 mutations.|Cardiomyopathy, Hypertrophic/genetics/metabolism[MESH]|Caveolin 3/*genetics/metabolism[MESH]|Distal Myopathies/genetics/metabolism[MESH]|Fatty Acids, Nonesterified/metabolism[MESH]|Humans[MESH]|Muscular Diseases/*genetics/metabolism[MESH]|Muscular Dystrophies, Limb-Girdle/genetics/metabolism[MESH]|Mutation[MESH]|Phosphofructokinase-1, Muscle Type/metabolism[MESH] |