The DOI matches its Crossref record; 677 of the 677 references it cites were found in a registry or an index.
The Sick and the Weak: Neuropathies/Myopathies in the Critically Ill
Open accessAbstract
Critical illness polyneuropathies (CIP) and myopathies (CIM) are common complications of critical illness. Several weakness syndromes are summarized under the term intensive care unit-acquired weakness (ICUAW). We propose a classification of different ICUAW forms (CIM, CIP, sepsis-induced, steroid-denervation myopathy) and pathophysiological mechanisms from clinical and animal model data. Triggers include sepsis, mechanical ventilation, muscle unloading, steroid treatment, or denervation. Some ICUAW forms require stringent diagnostic features; CIM is marked by membrane hypoexcitability, severe atrophy, preferential myosin loss, ultrastructural alterations, and inadequate autophagy activation while myopathies in pure sepsis do not reproduce marked myosin loss. Reduced membrane excitability results from depolarization and ion channel dysfunction. Mitochondrial dysfunction contributes to energy-dependent processes. Ubiquitin proteasome and calpain activation trigger muscle proteolysis and atrophy while protein synthesis is impaired. Myosin loss is more pronounced than actin loss in CIM. Protein quality control is altered by inadequate autophagy. Ca 2+dysregulation is present through altered Ca 2+homeostasis. We highlight clinical hallmarks, trigger factors, and potential mechanisms from human studies and animal models that allow separation of risk factors that may trigger distinct mechanisms contributing to weakness. During critical illness, altered inflammatory (cytokines) and metabolic pathways deteriorate muscle function. ICUAW prevention/treatment is limited, e.g., tight glycemic control, delaying nutrition, and early mobilization. Future challenges include identification of primary/secondary events during the time course of critical illness, the interplay between membrane excitability, bioenergetic failure and differential proteolysis, and finding new therapeutic targets by help of tailored animal models.
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Citations
Cites
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Cited by
Clinical review: intensive care unit acquired weakness
Hermans, G., & Van den Berghe, G. (2015) · Critical Care · doi:10.1186/s13054-015-0993-7 · Cited by 792
Self-citationMitochondrial quality control and muscle mass maintenance.
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Sepsis therapies: learning from 30 years of failure of translational research to propose new leads
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Muscular weakness and muscle wasting in the critically ill
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Metadata
- Authors
- Friedrich, O., Reid, M. B., Van den Berghe, G., Vanhorebeek, I., Hermans, G., Rich, M. M., & Larsson, L.
- Venue
- Physiological Reviews
- Publisher
- American Physiological Society
- Published
- 2015-07
- Volume
- 95
- Issue
- 3
- Pages
- 1025-1109
- ISSN
- 0031-9333 (ISSN-L)
- 1522-1210
- OpenAlex
- W2131699531
- Cited by
- 396
- References
- 677
- FWCI
- 3.67
- Type
- journal article
- Language
- en
- Open access
- green
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