title: [Cellular regulation of anabolism and catabolism in skeletal muscle during immobilisation, aging and critical illness].
abstract: Skeletal muscle atrophy is associated with situations of acute and chronical illness, such as sepsis, surgery, trauma and immobility. Additionally, it is a common problem during the physiological process of aging. The myofibrillar proteins myosin and actin, which are essential for muscle contraction, are the major targets during the process of protein degradation. This leads to a general loss of muscle mass, muscle strength and to increased muscle fatigue. In critically ill or immobile patients skeletal muscle atrophy is accompanied by enhanced inflammation, reduced wound healing, weaning complications and difficulties in mobilisation. During aging it results in falls, fractures, physical injuries and loss of mobility. Relating to the primary stimulators - hormones, muscle lengthening, stress, inflammation, neuronal activity - research is now focusing on the investigation of the signal transduction pathways, which influence protein synthesis and protein degradation during skeletal muscle atrophy.
authors.affiliation: Chirurgische Forschungslaboratorien, Medizinische Universität Wien, Wien, Austria.
authors.forename: Eva-Maria
authors.initials: EM
authors.lastname: Strasser
authors.forename: Barbara
authors.initials: B
authors.lastname: Wessner
authors.forename: Erich
authors.initials: E
authors.lastname: Roth
mesh_terms: D000375:Aging / Q000378:metabolism*; D016638:Critical Illness; D006801:Humans; D007103:Immobilization / Q000009:adverse effects*; D036341:Intercellular Signaling Peptides and Proteins / Q000378:metabolism*; D008954:Models, Biological; D009124:Muscle Proteins / Q000378:metabolism*; D018482:Muscle, Skeletal / Q000378:metabolism*; D009133:Muscular Atrophy / Q000209:etiology / Q000378:metabolism*
chemical_list: D036341:Intercellular Signaling Peptides and Proteins; D009124:Muscle Proteins