Muscle Injury Induces Postoperative Cognitive Dysfunction

Postoperative cognitive dysfunction (POCD) is a major complication affecting patients of any age undergoing surgery. This syndrome impacts everyday life up to months after hospital discharge, and its pathophysiology still remains unclear. Translational research focusing on POCD is based on a wide va...

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Vydáno v:	Scientific reports Ročník 10; číslo 1; s. 2768
Hlavní autoři:	Guéniot, Lorna, Lepere, Victoria, De Medeiros, Gabriela Ferreira, Danckaert, Anne, Flamant, Patricia, Le Dudal, Marine, Langeron, Olivier, Goossens, Pierre L., Chrétien, Fabrice, Jouvion, Grégory
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	London Nature Publishing Group UK 17.02.2020 Nature Publishing Group
Témata:	14/19 631/378/371 64/110 692/617/375 96/63 Aging - pathology Animal cognition Animal models Animals Behavioral plasticity Brain - pathology Brain - surgery Brain research Brain-derived neurotrophic factor Brain-Derived Neurotrophic Factor - metabolism Cognitive ability Cognitive science Critical care CX3C Chemokine Receptor 1 - genetics Cytokines - metabolism Disease Models, Animal Experiments Hippocampus - injuries Hippocampus - pathology Hippocampus - surgery Human health and pathology Humanities and Social Sciences Humans Inflammation Life Sciences Locomotion Long term memory Male Memory Mice Microglia Microglia - pathology Morphology multidisciplinary Muscle, Skeletal - injuries Muscle, Skeletal - metabolism Muscle, Skeletal - pathology Muscle, Skeletal - surgery Nerve growth factor Nerve Growth Factor - metabolism Pathophysiology Postoperative Cognitive Complications - etiology Postoperative Cognitive Complications - metabolism Postoperative Cognitive Complications - pathology Postoperative Complications - etiology Postoperative Complications - metabolism Postoperative Complications - pathology Regeneration Science Science (multidisciplinary) Skeletal muscle Surgery Synaptic plasticity Young adults
ISSN:	2045-2322, 2045-2322
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Shrnutí:	Postoperative cognitive dysfunction (POCD) is a major complication affecting patients of any age undergoing surgery. This syndrome impacts everyday life up to months after hospital discharge, and its pathophysiology still remains unclear. Translational research focusing on POCD is based on a wide variety of rodent models, such as the murine tibial fracture, whose severity can limit mouse locomotion and proper behavioral assessment. Besides, influence of skeletal muscle injury, a lesion encountered in a wide range of surgeries, has not been explored in POCD occurrence. We propose a physical model of muscle injury in CX3CR1 GFP/+ mice (displaying green fluorescent microglial cells) to study POCD, with morphological, behavioral and molecular approaches. We highlighted: alteration of short- and long-term memory after muscle regeneration, wide microglial reactivity in the brain, including hippocampus area, 24 hours after muscle injury, and an alteration of central brain derived neurotrophic factor (BDNF) and nerve growth factor (NGF) balance, 28 days after muscle injury. Our results suggest for the first time that muscle injury can have early as well as late impacts on the brain. Our CX3CR1 GFP/+ model can also facilitate microglial investigation, more specifically their pivotal role in neuroinflammation and synaptic plasticity, in the pathophysiology of POCD.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 PMCID: PMC7026159
ISSN:	2045-2322 2045-2322
DOI:	10.1038/s41598-020-59639-3