1
|
Cui CY, Ferrucci L, Gorospe M. Macrophage Involvement in Aging-Associated Skeletal Muscle Regeneration. Cells 2023; 12:1214. [PMID: 37174614 PMCID: PMC10177543 DOI: 10.3390/cells12091214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023] Open
Abstract
The skeletal muscle is a dynamic organ composed of contractile muscle fibers, connective tissues, blood vessels and nerve endings. Its main function is to provide motility to the body, but it is also deeply involved in systemic metabolism and thermoregulation. The skeletal muscle frequently encounters microinjury or trauma, which is primarily repaired by the coordinated actions of muscle stem cells (satellite cells, SCs), fibro-adipogenic progenitors (FAPs), and multiple immune cells, particularly macrophages. During aging, however, the capacity of skeletal muscle to repair and regenerate declines, likely contributing to sarcopenia, an age-related condition defined as loss of muscle mass and function. Recent studies have shown that resident macrophages in skeletal muscle are highly heterogeneous, and their phenotypes shift during aging, which may exacerbate skeletal muscle deterioration and inefficient regeneration. In this review, we highlight recent insight into the heterogeneity and functional roles of macrophages in skeletal muscle regeneration, particularly as it declines with aging.
Collapse
Affiliation(s)
- Chang-Yi Cui
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Luigi Ferrucci
- Translational Gerontology Branch, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Myriam Gorospe
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| |
Collapse
|
2
|
Leite APS, Pinto CG, Tibúrcio FC, Muller KS, Padovani CR, Barraviera B, Junior RSF, Leal CV, Matsumura CY, Matheus SMM. Acetylcholine receptors of the neuromuscular junctions present normal distribution after peripheral nerve injury and repair through nerve guidance associated with fibrin biopolymer. Injury 2023; 54:345-361. [PMID: 36446670 DOI: 10.1016/j.injury.2022.11.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 10/26/2022] [Accepted: 11/20/2022] [Indexed: 11/25/2022]
Abstract
Peripheral nerve injuries (PNI) lead to alterations in the Agrin-LRP4-MuSK pathway. This results in disaggregation of AChRs and change from epsilon (mature, innervated) to gamma (immature, denervated) subunit. Tubulization technique has been shown to be effective for PNI repair and it also allows the use of adjuvants, such as fibrin biopolymer (FB). This study evaluated the effect of the association of tubulization with FB after PNI on AChRs and associated proteins. Fifty-two adults male Wistar rats were used, distributed in 4 experimental groups: Sham Control (S), Denervated Control (D); Tubulization (TB) and Tubulization + Fibrin Biopolymer (TB+FB). Catwalk was performed every 15 days. Ninety days after surgery the right soleus muscles and ischiatic nerves were submitted to the following analyses: (a) morphological and morphometric analysis of AChRs by confocal microscopy; (b) morphological and morphometric analysis of the ischiatic nerve; (c) protein quantification of AChRs: alpha, gama, and epsilon, of Schwann cells, agrin, LRP4, MuSK, rapsyn, MMP3, MyoD, myogenin, MURF1 and atrogin-1. The main results were about the NMJs that in the TB+FB group presented morphological and morphometric approximation (compactness index; area of the AChRs and motor plate) to the S group. In addition, there were also an increase of S100 and AChRε protein expression and a decrease of MyoD. These positive association resulted in AChRs stabilization that potentiate the neuromuscular regeneration, which strengthens the use of TB for severe injuries repair and the beneficial effect of FB, along with tubulization technique.
Collapse
Affiliation(s)
- Ana Paula Silveira Leite
- Medical School, São Paulo State University (Unesp), Botucatu, SP, Brazil; Division of Anatomy, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (Unesp), Botucatu, SP, Brazil.
| | - Carina Guidi Pinto
- Medical School, São Paulo State University (Unesp), Botucatu, SP, Brazil; Division of Anatomy, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (Unesp), Botucatu, SP, Brazil
| | - Felipe Cantore Tibúrcio
- Medical School, São Paulo State University (Unesp), Botucatu, SP, Brazil; Division of Anatomy, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (Unesp), Botucatu, SP, Brazil
| | - Kevin Silva Muller
- Medical School, São Paulo State University (Unesp), Botucatu, SP, Brazil; Division of Anatomy, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (Unesp), Botucatu, SP, Brazil
| | - Carlos Roberto Padovani
- Division of Biostatistics, Department of Biostatistics, Vegetal Biology, Parasitology and Zoology, Institute of Biosciences, São Paulo State University (Unesp), Botucatu, SP, Brazil
| | - Benedito Barraviera
- Medical School, São Paulo State University (Unesp), Botucatu, SP, Brazil; Center for the Study of Venoms and Venomous Animals (Cevap), São Paulo State University (Unesp), Botucatu, SP, Brazil
| | - Rui Seabra Ferreira Junior
- Center for the Study of Venoms and Venomous Animals (Cevap), São Paulo State University (Unesp), Botucatu, SP, Brazil
| | - Claudenete Vieira Leal
- School of Mechanical Engineering, University of Campinas (Unicamp), Campinas, SP, Brazil
| | - Cintia Yuri Matsumura
- Division of Anatomy, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (Unesp), Botucatu, SP, Brazil
| | - Selma Maria Michelin Matheus
- Division of Anatomy, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (Unesp), Botucatu, SP, Brazil
| |
Collapse
|
3
|
Tu H, Qian J, Zhang D, Barksdale AN, Wadman MC, Pipinos II, Li YL. Different responses of skeletal muscles to femoral artery ligation-induced ischemia identified in BABL/c and C57BL/6 mice. Front Physiol 2022; 13:1014744. [PMID: 36187770 PMCID: PMC9523359 DOI: 10.3389/fphys.2022.1014744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 08/31/2022] [Indexed: 11/21/2022] Open
Abstract
Peripheral arterial disease (PAD) is a common circulatory problem in lower extremities, and the murine ischemic model is used to reproduce human PAD. To compare strain differences of skeletal muscle responses to ischemia, the left femoral artery was blocked by ligation to reduce blood flow to the limb of BALB/c and C57BL/6 mice. After 6 weeks of the femoral artery ligation, the functional and morphological changes of the gastrocnemius muscle were evaluated. BALB/c mice displayed serious muscular dystrophy, including smaller myofibers (524.3 ± 66 µM2), accumulation of adipose-liked tissue (17.8 ± 0.9%), and fibrosis (6.0 ± 0.5%), compared to C57BL/6 mice (1,328.3 ± 76.3 µM2, 0.27 ± 0.09%, and 1.56 ± 0.06%, respectively; p < 0.05). About neuromuscular junctions (NMJs) in the gastrocnemius muscle, 6 weeks of the femoral artery ligation induced more damage in BALB/c mice than that in C57BL/6 mice, demonstrated by the fragment number of nicotinic acetylcholine receptor (nAChR) clusters (8.8 ± 1.3 in BALB/c vs. 2.5 ± 0.7 in C57BL/6 mice, p < 0.05) and amplitude of sciatic nerve stimulated-endplate potentials (EPPs) (9.29 ± 1.34 mV in BALB/c vs. 20.28 ± 1.42 mV in C57BL/6 mice, p < 0.05). More importantly, 6 weeks of the femoral artery ligation significantly weakened sciatic nerve-stimulated skeletal muscle contraction in BALB/c mice, whereas it didn’t alter the skeletal muscle contraction in C57BL/6 mice. These results suggest that the femoral artery ligation in BALB/c mice is a useful animal model to develop new therapeutic approaches to improve limb structure and function in PAD, although the mechanisms about strain differences of skeletal muscle responses to ischemia are unclear.
Collapse
Affiliation(s)
- Huiyin Tu
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Junliang Qian
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Dongze Zhang
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Aaron N. Barksdale
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Michael C. Wadman
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Iraklis I. Pipinos
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, United States
| | - Yu-Long Li
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, United States
- *Correspondence: Yu-Long Li,
| |
Collapse
|
4
|
Giakoumaki I, Pollock N, Aljuaid T, Sannicandro AJ, Alameddine M, Owen E, Myrtziou I, Ozanne SE, Kanakis I, Goljanek-Whysall K, Vasilaki A. Postnatal Protein Intake as a Determinant of Skeletal Muscle Structure and Function in Mice-A Pilot Study. Int J Mol Sci 2022; 23:8815. [PMID: 35955948 PMCID: PMC9369224 DOI: 10.3390/ijms23158815] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 07/26/2022] [Accepted: 07/27/2022] [Indexed: 12/04/2022] Open
Abstract
Sarcopenia is characterised by an age-related decrease in the number of muscle fibres and additional weakening of the remaining fibres, resulting in a reduction in muscle mass and function. Many studies associate poor maternal nutrition during gestation and/or lactation with altered skeletal muscle homeostasis in the offspring and the development of sarcopenia. The aim of this study was to determine whether the musculoskeletal physiology in offspring born to mouse dams fed a low-protein diet during pregnancy was altered and whether any physiological changes could be modulated by the nutritional protein content in early postnatal stages. Thy1-YFP female mice were fed ad libitum on either a normal (20%) or a low-protein (5%) diet. Newborn pups were cross-fostered to different lactating dams (maintained on a 20% or 5% diet) to generate three groups analysed at weaning (21 days): Normal-to-Normal (NN), Normal-to-Low (NL) and Low-to-Normal (LN). Further offspring were maintained ad libitum on the same diet as during lactation until 12 weeks of age, creating another three groups (NNN, NLL, LNN). Mice on a low protein diet postnatally (NL, NLL) exhibited a significant reduction in body and muscle weight persisting up to 12 weeks, unlike mice on a low protein diet only prenatally (LN, LNN). Muscle fibre size was reduced in mice from the NL but not LN group, showing recovery at 12 weeks of age. Muscle force was reduced in NLL mice, concomitant with changes in the NMJ site and changes in atrophy-related and myosin genes. In addition, μCT scans of mouse tibiae at 12 weeks of age revealed changes in bone mass and morphology, resulting in a higher bone mass in the NLL group than the control NNN group. Finally, changes in the expression of miR-133 in the muscle of NLL mice suggest a regulatory role for this microRNA in muscle development in response to postnatal diet changes. Overall, this data shows that a low maternal protein diet and early postnatal life low-protein intake in mice can impact skeletal muscle physiology and function in early life while postnatal low protein diet favours bone integrity in adulthood.
Collapse
Affiliation(s)
- Ifigeneia Giakoumaki
- Department of Musculoskeletal & Ageing Science, Institute of Life Course & Medical Sciences, Faculty of Health & Life Sciences, University of Liverpool, Liverpool L7 8TX, UK
| | - Natalie Pollock
- Department of Musculoskeletal & Ageing Science, Institute of Life Course & Medical Sciences, Faculty of Health & Life Sciences, University of Liverpool, Liverpool L7 8TX, UK
- The MRC—Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool L7 8TX, UK
| | - Turki Aljuaid
- Department of Physiology, School of Medicine and REMEDI, CMNHS, NUI Galway, H91 TK33 Galway, Ireland
- Department of Biotechnology, College of Science, Taif University, Taif 21944, Saudi Arabia
| | - Anthony J. Sannicandro
- Department of Physiology, School of Medicine and REMEDI, CMNHS, NUI Galway, H91 TK33 Galway, Ireland
| | - Moussira Alameddine
- Department of Musculoskeletal & Ageing Science, Institute of Life Course & Medical Sciences, Faculty of Health & Life Sciences, University of Liverpool, Liverpool L7 8TX, UK
| | - Euan Owen
- Department of Musculoskeletal & Ageing Science, Institute of Life Course & Medical Sciences, Faculty of Health & Life Sciences, University of Liverpool, Liverpool L7 8TX, UK
| | - Ioanna Myrtziou
- Chester Medical School, University of Chester, Bache Hall, Countess View, Chester CH2 1BR, UK
| | - Susan E. Ozanne
- University of Cambridge MRC Metabolic Diseases Unit and Metabolic Research Laboratories, Institute of Metabolic Science, Addenbrooke’s Hospital Cambridge, Cambridge CB2 0QQ, UK
| | - Ioannis Kanakis
- Department of Musculoskeletal & Ageing Science, Institute of Life Course & Medical Sciences, Faculty of Health & Life Sciences, University of Liverpool, Liverpool L7 8TX, UK
- Chester Medical School, University of Chester, Bache Hall, Countess View, Chester CH2 1BR, UK
| | - Katarzyna Goljanek-Whysall
- Department of Musculoskeletal & Ageing Science, Institute of Life Course & Medical Sciences, Faculty of Health & Life Sciences, University of Liverpool, Liverpool L7 8TX, UK
- The MRC—Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool L7 8TX, UK
- Department of Physiology, School of Medicine and REMEDI, CMNHS, NUI Galway, H91 TK33 Galway, Ireland
| | - Aphrodite Vasilaki
- Department of Musculoskeletal & Ageing Science, Institute of Life Course & Medical Sciences, Faculty of Health & Life Sciences, University of Liverpool, Liverpool L7 8TX, UK
- The MRC—Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool L7 8TX, UK
| |
Collapse
|
5
|
Qian J, Tu H, Zhang D, Barksdale AN, Patel KP, Wadman MC, Li YL. Therapeutic effects of masitinib on abnormal mechanoreception in a mouse model of tourniquet-induced extremity ischemia-reperfusion. Eur J Pharmacol 2021; 911:174549. [PMID: 34619116 DOI: 10.1016/j.ejphar.2021.174549] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 09/01/2021] [Accepted: 09/30/2021] [Indexed: 11/18/2022]
Abstract
Tourniquets are widely used to stop extremity hemorrhage, but their use and subsequent release can result in nerve damage and degeneration, leading to neurological deficits. Increasing evidence has suggested a pivotal role of inflammation in nerve damage and abnormal mechanoreception. In this study, we investigated the therapeutic effects of masitinib (Mas), an anti-neuroinflammatory drug, on the mechanoreception of sensory neurons in a mouse model of tourniquet-induced hind paw ischemia-reperfusion (tourniquet/IR). C57BL/6 mice were subjected to 3 h of ischemia by placing a rubber band at the ankle joint and evaluated for subsequent reperfusion injury on day 1, 3, 7, 14, and 28 based on the experiments. Treatment with Mas (28 mg/kg/day, i.p.) began on the day of IR induction and lasted for 1, 3, 7, 14, or 28 days. Tourniquet/IR caused sensory nerve denervation in the skin of paw pads and abolished the hind paw mechanoreception to mechanical stimulation during the first 3 days of reperfusion. Sensory nerves gradually reinnervated in the skin of paw pads and allodynia began to appear on day 7. The maximum reaction occurred on day 14 and was maintained throughout the study period. Treatment with Mas mitigated nerve damage and improved hind paw mechanoreception to mechanical stimulation by decreasing the production of reactive oxygen species (ROS) during the early stages of tourniquet/IR. Mas also alleviated allodynia and decreased inflammatory cytokines (IL-1β and TNFα) in the skin of paw pads from days 7-28. Our data suggest that treatment with Mas significantly ameliorated paw numbness and allodynia in mouse hind paw tourniquet/IR.
Collapse
Affiliation(s)
- Junliang Qian
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Huiyin Tu
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Dongze Zhang
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Aaron N Barksdale
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kaushik P Patel
- Department of Cellular & Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Michael C Wadman
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Yu-Long Li
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, USA; Department of Cellular & Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, USA.
| |
Collapse
|
6
|
Tu H, Zhang D, Qian J, Barksdale AN, Pipinos II, Patel KP, Wadman MC, Li YL. A comparison of acute mouse hindlimb injuries between tourniquet- and femoral artery ligation-induced ischemia-reperfusion. Injury 2021; 52:3217-3226. [PMID: 34544588 DOI: 10.1016/j.injury.2021.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 09/01/2021] [Accepted: 09/03/2021] [Indexed: 02/02/2023]
Abstract
The tourniquet or femoral artery ligation is widely used to stop extremity hemorrhage or create a bloodless operating field in the combat scenario and civilian setting. However, these procedures with subsequent reperfusion also induce ischemia-reperfusion (IR) injuries. To fully evaluate animal models of limb IR injuries, we compared tourniquet- and femoral artery ligation-induced IR injuries in the hindlimb of mice. In C57/BL6 mice, 3 h of unilateral hindlimb ischemia was induced by placement of a rubber band at the hip joint or a surgical ligation of the femoral artery. The tourniquet or femoral artery ligation was then released, allowing for 24 h of reperfusion. Compared to the femoral artery ligation/IR, the tourniquet/IR induced more severe skeletal muscle damage, including muscle necrosis and interruption of muscle fibers. There was no gastrocnemius muscle contraction in tourniquet/IR, while femoral artery ligation/IR markedly weakened gastrocnemius muscle contraction. Motor nerve terminals disappeared, and endplate potentials (EPPs) were undetectable in tourniquet/IR, whereas femoral artery ligation/IR only induced mild impairment of motor nerve terminals and decreased the amplitude of EPPs. Additionally, western blot data showed that proinflammatory cytokine levels (IL-1β and TNF-α) were higher in the tourniquet/IR than that in femoral artery ligation/IR. Moreover, tourniquet/IR caused significant tissue edema and dilation of lymphatic vessels in the hindlimb, compared to femoral artery ligation/IR. The above data demonstrated that tourniquet/IR-induced acute hindlimb injuries are more severe than those induced by femoral artery ligation/IR. This suggests that future investigators should determine which hindlimb IR model (tourniquet/IR or femoral artery ligation/IR) is optimal depending on the purpose of their study.
Collapse
Affiliation(s)
- Huiyin Tu
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Dongze Zhang
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Junliang Qian
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Aaron N Barksdale
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Iraklis I Pipinos
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kaushik P Patel
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Michael C Wadman
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Yu-Long Li
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA; Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, USA.
| |
Collapse
|
7
|
Sorensen JR, Hoffman DB, Corona BT, Greising SM. Secondary denervation is a chronic pathophysiologic sequela of volumetric muscle loss. J Appl Physiol (1985) 2021; 130:1614-1625. [PMID: 33830817 DOI: 10.1152/japplphysiol.00049.2021] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Volumetric muscle loss (VML) is the traumatic loss of muscle tissue that results in long-term functional impairments. Despite the loss of myofibers, there remains an unexplained significant decline in muscle function. VML injury likely extends beyond the defect area, causing negative secondary outcomes to the neuromuscular system, including the neuromuscular junctions (NMJs), yet the extent to which VML induces denervation is unclear. This study systematically examined NMJs surrounding the VML injury, hypothesizing that the sequela of VML includes denervation. The VML injury removed ∼20% of the tibialis anterior (TA) muscle in adult male inbred Lewis rats (n = 43), the noninjured leg served as an intra-animal control. Muscles were harvested up to 48 days post-VML. Synaptic terminals were identified immunohistochemically, and quantitative confocal microscopy evaluated 2,613 individual NMJ. Significant denervation was apparent by 21 and 48 days post-VML. Initially, denervation increased ∼10% within 3 days of injury; with time, denervation further increased to ∼22% and 32% by 21 and 48 days post-VML, respectively, suggesting significant secondary denervation. The appearance of terminal axon sprouting and polyinnervation were observed as early as 7 days post-VML, increasing in number and complexity throughout 48 days. There was no evidence of VML-induced NMJ size alteration, which may be beneficial for interventions aimed at restoring muscle function. This work recognizes VML-induced secondary denervation and poor remodeling of the NMJ as part of the sequela of VML injury; moreover, secondary denervation is a possible contributing factor to the chronic functional impairments and potentially an overlooked treatment target.NEW & NOTEWORTHY This work advances our understanding of the pathophysiologic complexity of volumetric muscle loss injury. Specifically, we identified secondary denervation in the muscle remaining after volumetric muscle loss injuries as a novel aspect of the injury sequela. Denervation increased chronically, in parallel with the appearance of irregular morphological characteristics and destabilization of the neuromuscular junction, which is expected to further confound chronic functional impairments.
Collapse
Affiliation(s)
- Jacob R Sorensen
- School of Kinesiology, University of Minnesota, Minneapolis, Minnesota
| | - Daniel B Hoffman
- School of Kinesiology, University of Minnesota, Minneapolis, Minnesota
| | - Benjamin T Corona
- School of Medicine, Wake Forest University, Winston-Salem, North Carolina
| | - Sarah M Greising
- School of Kinesiology, University of Minnesota, Minneapolis, Minnesota
| |
Collapse
|
8
|
Straka T, Schröder C, Roos A, Kollipara L, Sickmann A, Williams MPI, Hafner M, Khan MM, Rudolf R. Regulatory Function of Sympathetic Innervation on the Endo/Lysosomal Trafficking of Acetylcholine Receptor. Front Physiol 2021; 12:626707. [PMID: 33776791 PMCID: PMC7991846 DOI: 10.3389/fphys.2021.626707] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 02/08/2021] [Indexed: 01/02/2023] Open
Abstract
Recent studies have demonstrated that neuromuscular junctions are co-innervated by sympathetic neurons. This co-innervation has been shown to be crucial for neuromuscular junction morphology and functional maintenance. To improve our understanding of how sympathetic innervation affects nerve–muscle synapse homeostasis, we here used in vivo imaging, proteomic, biochemical, and microscopic approaches to compare normal and sympathectomized mouse hindlimb muscles. Live confocal microscopy revealed reduced fiber diameters, enhanced acetylcholine receptor turnover, and increased amounts of endo/lysosomal acetylcholine-receptor-bearing vesicles. Proteomics analysis of sympathectomized skeletal muscles showed that besides massive changes in mitochondrial, sarcomeric, and ribosomal proteins, the relative abundance of vesicular trafficking markers was affected by sympathectomy. Immunofluorescence and Western blot approaches corroborated these findings and, in addition, suggested local upregulation and enrichment of endo/lysosomal progression and autophagy markers, Rab 7 and p62, at the sarcomeric regions of muscle fibers and neuromuscular junctions. In summary, these data give novel insights into the relevance of sympathetic innervation for the homeostasis of muscle and neuromuscular junctions. They are consistent with an upregulation of endocytic and autophagic trafficking at the whole muscle level and at the neuromuscular junction.
Collapse
Affiliation(s)
- Tatjana Straka
- Institute of Molecular and Cell Biology, Mannheim University of Applied Sciences, Mannheim, Germany.,Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany.,Interdisciplinary Center for Neurosciences, Heidelberg University, Heidelberg, Germany
| | - Charlotte Schröder
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Dortmund, Germany
| | - Andreas Roos
- Department of Neuropediatrics, University Hospital Essen, Essen, Germany.,Children's Hospital of Eastern Ontario Research Institute, Ottawa, ON, Canada
| | | | - Albert Sickmann
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Dortmund, Germany.,Department of Chemistry, College of Physical Sciences, University of Aberdeen, Aberdeen, United Kingdom.,Medizinische Fakultät, Medizinische Proteom-Center (MPC), Ruhr-Universität Bochum, Bochum, Germany
| | | | - Mathias Hafner
- Institute of Molecular and Cell Biology, Mannheim University of Applied Sciences, Mannheim, Germany
| | - Muzamil Majid Khan
- Institute of Molecular and Cell Biology, Mannheim University of Applied Sciences, Mannheim, Germany.,Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany.,Interdisciplinary Center for Neurosciences, Heidelberg University, Heidelberg, Germany
| | - Rüdiger Rudolf
- Institute of Molecular and Cell Biology, Mannheim University of Applied Sciences, Mannheim, Germany.,Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany.,Interdisciplinary Center for Neurosciences, Heidelberg University, Heidelberg, Germany
| |
Collapse
|
9
|
Busse E, Hickey C, Vasilakos N, Stewart K, O’Brien F, Rivera J, Marrero L, Lacey M, Schroll R, Van Meter K, Sammarco MC. Plasma flow distal to tourniquet placement provides a physiological mechanism for tissue salvage. PLoS One 2020; 15:e0244236. [PMID: 33347516 PMCID: PMC7752148 DOI: 10.1371/journal.pone.0244236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 12/06/2020] [Indexed: 11/23/2022] Open
Abstract
Military literature has demonstrated the utility and safety of tourniquets in preventing mortality for some time, paving the way for increased use of tourniquets in civilian settings, including perioperatively to provide a bloodless surgical field. However, tourniquet use is not without risk and the subsequent effects of tissue ischemia can impede downstream rehabilitative efforts to regenerate and salvage nerve, muscle, tissue and bone in the limb. Limb ischemia studies in both the mouse and pig models have indicated not only that there is residual flow past the tourniquet by means of microcirculation, but also that recovery from tissue ischemia is dependent upon this microcirculation. Here we expand upon these previous studies using portable Near-Infrared Imaging to quantify residual plasma flow distal to the tourniquet in mice, pigs, and humans and leverage this flow to show that plasma can be supersaturated with oxygen to reduce intracellular hypoxia and promote tissue salvage following tourniquet placement. Our findings provide a mechanism of delivery for the application of oxygen, tissue preservation solutions, and anti-microbial agents prior to tourniquet release to improve postoperative recovery. In the current environment of increased tourniquet use, techniques which promote distal tissue preservation and limb salvage rates are crucial.
Collapse
Affiliation(s)
- Emily Busse
- Department of Surgery, Tulane School of Medicine, New Orleans, Louisiana, United States of America
| | - Cheryl Hickey
- Department of Emergency Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Nicole Vasilakos
- Department of Physiology, Tulane School of Medicine, New Orleans, Louisiana, United States of America
| | - Kennon Stewart
- Department of Mathematics, Tulane University, New Orleans, Louisiana, United States of America
| | - Fred O’Brien
- Orthopaedic Surgery Service, Dwight D. Eisenhower Army Medical Center, Fort Gordon, Georgia, United States of America
| | - Jessica Rivera
- Department of Orthopedics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Luis Marrero
- Department of Orthopedics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Michelle Lacey
- Department of Mathematics, Tulane University, New Orleans, Louisiana, United States of America
| | - Rebecca Schroll
- Department of Surgery, Tulane School of Medicine, New Orleans, Louisiana, United States of America
| | - Keith Van Meter
- Department of Emergency Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Mimi C. Sammarco
- Department of Surgery, Tulane School of Medicine, New Orleans, Louisiana, United States of America
- * E-mail:
| |
Collapse
|
10
|
Tu H, Zhang D, Wadman MC, Li YL. Dexamethasone ameliorates recovery process of neuromuscular junctions after tourniquet-induced ischemia-reperfusion injuries in mouse hindlimb. Eur J Pharmacol 2020; 883:173364. [DOI: 10.1016/j.ejphar.2020.173364] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 02/06/2023]
|
11
|
Rigon M, Hörner SJ, Straka T, Bieback K, Gretz N, Hafner M, Rudolf R. Effects of ASC Application on Endplate Regeneration Upon Glycerol-Induced Muscle Damage. Front Mol Neurosci 2020; 13:107. [PMID: 32655366 PMCID: PMC7324987 DOI: 10.3389/fnmol.2020.00107] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 05/20/2020] [Indexed: 01/06/2023] Open
Abstract
Amongst other approaches, adipose-derived stromal cells (ASCs) have recently been tested with respect to their regenerative capacity for treatment of neuromuscular disorders. While beneficial effects of ASCs on muscle recovery were observed previously, their impact on regeneration of neuromuscular junctions (NMJs) is unclear. Here, we used a murine glycerol damage model to study disruption and regeneration of NMJs and to evaluate the effects of systemic application of ASCs on muscle and NMJ recovery. In mice that were not treated with ASCs, a differential response of NMJ pre- and post-synapses to glycerol-induced damage was observed. While post-synapses were still present in regions that were necrotic and lacking actin and dystrophin, pre-synapses disappeared soon in those affected areas. Partial regeneration of NMJs occurred within 11 days after damage. ASC treatment slightly enhanced NMJ recovery and reduced the loss of presynaptic sites, but also led to a late phase of muscle necrosis and fibrosis. In summary, the results suggest a differential sensitivity of NMJ pre- and post-synapses to glycerol-induced muscle damage and that the use of ASC for the treatment of neuromuscular disorders needs further careful evaluation.
Collapse
Affiliation(s)
- Matteo Rigon
- Institute of Molecular and Cell Biology, Mannheim University of Applied Sciences, Mannheim, Germany
| | - Sarah Janice Hörner
- Institute of Molecular and Cell Biology, Mannheim University of Applied Sciences, Mannheim, Germany
| | - Tatjana Straka
- Institute of Molecular and Cell Biology, Mannheim University of Applied Sciences, Mannheim, Germany
| | - Karen Bieback
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Norbert Gretz
- Medical Research Center, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,Institute of Medical Technology, Medical Faculty Mannheim, Mannheim University of Applied Sciences, Mannheim, Germany
| | - Mathias Hafner
- Institute of Molecular and Cell Biology, Mannheim University of Applied Sciences, Mannheim, Germany.,Institute of Medical Technology, Medical Faculty Mannheim, Mannheim University of Applied Sciences, Mannheim, Germany
| | - Rüdiger Rudolf
- Institute of Molecular and Cell Biology, Mannheim University of Applied Sciences, Mannheim, Germany.,Institute of Medical Technology, Medical Faculty Mannheim, Mannheim University of Applied Sciences, Mannheim, Germany.,Interdisciplinary Center for Neurosciences, Heidelberg University, Heidelberg, Germany
| |
Collapse
|
12
|
Forcina L, Cosentino M, Musarò A. Mechanisms Regulating Muscle Regeneration: Insights into the Interrelated and Time-Dependent Phases of Tissue Healing. Cells 2020; 9:E1297. [PMID: 32456017 PMCID: PMC7290814 DOI: 10.3390/cells9051297] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/18/2020] [Accepted: 05/20/2020] [Indexed: 12/12/2022] Open
Abstract
Despite a massive body of knowledge which has been produced related to the mechanisms guiding muscle regeneration, great interest still moves the scientific community toward the study of different aspects of skeletal muscle homeostasis, plasticity, and regeneration. Indeed, the lack of effective therapies for several physiopathologic conditions suggests that a comprehensive knowledge of the different aspects of cellular behavior and molecular pathways, regulating each regenerative stage, has to be still devised. Hence, it is important to perform even more focused studies, taking the advantage of robust markers, reliable techniques, and reproducible protocols. Here, we provide an overview about the general aspects of muscle regeneration and discuss the different approaches to study the interrelated and time-dependent phases of muscle healing.
Collapse
Affiliation(s)
| | | | - Antonio Musarò
- Laboratory affiliated to Istituto Pasteur Italia—Fondazione Cenci Bolognetti, DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of Rome, Via Antonio Scarpa, 14, 00161 Rome, Italy; (L.F.); (M.C.)
| |
Collapse
|
13
|
Zheng XS, Griffith AY, Chang E, Looker MJ, Fisher LE, Clapsaddle B, Cui XT. Evaluation of a conducting elastomeric composite material for intramuscular electrode application. Acta Biomater 2020; 103:81-91. [PMID: 31863910 DOI: 10.1016/j.actbio.2019.12.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/25/2019] [Accepted: 12/10/2019] [Indexed: 01/14/2023]
Abstract
Electrical stimulation of the muscle has been proven efficacious in preventing atrophy and/or reanimating paralyzed muscles. Intramuscular electrodes made from metals have significantly higher Young's Moduli than the muscle tissues, which has the potential to cause chronic inflammation and decrease device performance. Here, we present an intramuscular electrode made from an elastomeric conducting polymer composite consisting of PEDOT-PEG copolymer, silicone and carbon nanotubes (CNT) with fluorosilicone insulation. The electrode wire has a Young's modulus of 804 (±99) kPa, which better mimics the muscle tissue modulus than conventional stainless steel (SS) electrodes. Additionally, the non-metallic composition enables metal-artifact free CT and MR imaging. These soft wire (SW) electrodes present comparable electrical impedance to SS electrodes of similar geometric surface area, activate muscle at a lower threshold, and maintain stable electrical properties in vivo up to 4 weeks. Histologically, the SW electrodes elicited significantly less fibrotic encapsulation and less IBA-1 positive macrophage accumulation than the SS electrodes at one and three months. Further phenotyping the macrophages with the iNOS (pro-inflammatory) and ARG-1 (pro-healing) markers revealed significantly less presence of pro-inflammatory macrophage around SW implants at one month. By three months, there was a significant increase in pro-healing macrophages (ARG-1) around the SW implants but not around the SS implants. Furthermore, a larger number of AchR clusters closer to SW implants were found at both time points compared to SS implants. These results suggest that a softer implant encourages a more intimate and healthier electrode-tissue interface. STATEMENT OF SIGNIFICANCE: Intramuscular electrodes made from metals have significantly higher Young's Moduli than the muscle tissues, which has the potential to cause chronic inflammation and decrease device performance. Here, we present an intramuscular electrode made from an elastomeric conducting polymer composite consisting of PEDOT-PEG copolymer, silicone and carbon nanotubes with fluorosilicone insulation. This elastomeric composite results in an electrode wire with a Young's modulus mimicking that of the muscle tissue, which elicits significantly less foreign body response compared to stainless steel wires. The lack of metal in this composite also enables metal-artifact free MRI and CT imaging.
Collapse
Affiliation(s)
- X Sally Zheng
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, United States
| | - Azante Y Griffith
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, United States
| | - Emily Chang
- TDA Research Inc., Wheat Ridge, CO 80033, United States
| | | | - Lee E Fisher
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, United States; Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, PA 15213, United States; Center for Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, United States
| | | | - X Tracy Cui
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, United States; Center for Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, United States; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States.
| |
Collapse
|
14
|
Li L, Yokoyama H, Kaburagi H, Hirai T, Tsuji K, Enomoto M, Wakabayashi Y, Okawa A. Remnant neuromuscular junctions in denervated muscles contribute to functional recovery in delayed peripheral nerve repair. Neural Regen Res 2020; 15:731-738. [PMID: 31638098 PMCID: PMC6975147 DOI: 10.4103/1673-5374.266925] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Schwann cell proliferation in peripheral nerve injury (PNI) enhances axonal regeneration compared to central nerve injury. However, even in PNI, long-term nerve damage without repair induces degeneration of neuromuscular junctions (NMJs), and muscle atrophy results in irreversible dysfunction. The peripheral regeneration of motor axons depends on the duration of skeletal muscle denervation. To overcome this difficulty in nerve regeneration, detailed mechanisms should be determined for not only Schwann cells but also NMJ degeneration after PNI and regeneration after nerve repair. Here, we examined motor axon denervation in the tibialis anterior muscle after peroneal nerve transection in thy1-YFP mice and regeneration with nerve reconstruction using allografts. The number of NMJs in the tibialis anterior muscle was maintained up to 4 weeks and then decreased at 6 weeks after injury. In contrast, the number of Schwann cells showed a stepwise decline and then reached a plateau at 6 weeks after injury. For regeneration, we reconstructed the degenerated nerve with an allograft at 4 and 6 weeks after injury, and evaluated functional and histological outcomes for 10 to 12 weeks after grafting. A higher number of pretzel-shaped NMJs in the tibialis anterior muscle and better functional recovery were observed in mice with a 4-week delay in surgery than in those with a 6-week delay. Nerve repair within 4 weeks after PNI is necessary for successful recovery in mice. Prevention of synaptic acetylcholine receptor degeneration may play a key role in peripheral nerve regeneration. All animal experiments were approved by the Institutional Animal Care and Use Committee of Tokyo Medical and Dental University on 5 July 2017, 30 March 2018, and 15 May 2019 (A2017-311C, A2018-297A, and A2019-248A), respectively.
Collapse
Affiliation(s)
- Leyang Li
- Department of Orthopedic and Spinal Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroyuki Yokoyama
- Department of Orthopedic and Spinal Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hidetoshi Kaburagi
- Department of Orthopedic and Spinal Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takashi Hirai
- Department of Orthopedic and Spinal Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kunikazu Tsuji
- Department of Cartilage Regeneration, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mitsuhiro Enomoto
- Department of Orthopedic and Spinal Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yoshiaki Wakabayashi
- Department of Orthopedic and Spinal Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Atsushi Okawa
- Department of Orthopedic and Spinal Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| |
Collapse
|
15
|
Hossfeld B, Lechner R, Josse F, Bernhard M, Walcher F, Helm M, Kulla M. [Prehospital application of tourniquets for life-threatening extremity hemorrhage : Systematic review of literature]. Unfallchirurg 2019; 121:516-529. [PMID: 29797031 DOI: 10.1007/s00113-018-0510-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION The effectiveness of a tourniquet in the case of life-threatening hemorrhages of the extremities is well recognized and led to the recommendations on "Tourniquet" of the German Society of Anaesthesiology and Intensive Care (DGAI) in 2016. The aim of this systematic review was to re-evaluate the current medical literature in relation to the published DGAI recommendations. MATERIAL AND METHODS Based on the analysis of all studies published from January 2015 until January 2018 in the PubMed databases, the publicized recommendations for action on "Tourniquet" of the DGAI were critically re-evaluated. For this purpose, 17 questions on 6 subjects were formulated in advance. The systematic review followed the PRISMA recommendations and is registered in PROSPERO (International prospective register of systematic reviews, Reg.-ID: CRD42018091528). RESULTS Of the 284 studies identified with the keywords tourniquet and trauma in the period from January 2015 to January 2018 in PubMed, 50 original papers discussing the prehospital application of tourniquet for life-threatening hemorrhage of the extremities were included. The overall level of evidence is low. No article addressed any of the formulated questions with a prospective randomized interventional study. Scientific deductions could be found only in an indirect way in a descriptive manner. CONCLUSION The 50 original articles included in this qualitative, systematic review revealed that the recommendations "Tourniquet" of the DGAI published in 2016 are mostly still up to date despite an inhomogeneous study situation. A deviation occurred in the conversion of a tourniquet but due to the short prehospital treatment time in the civilian setting this is of little importance; however, in the future a strict distinction should be made between tourniquets which were placed for tactical reasons and those placed as a medical necessity.
Collapse
Affiliation(s)
- B Hossfeld
- Klinik für Anästhesiologie und Intensivmedizin, Sektion Notfallmedizin, Bundeswehrkrankenhaus Ulm, Oberer Eselsberg 40, 89081, Ulm, Deutschland.,Arbeitsgruppe "Taktische Medizin", Arbeitskreises Notfallmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin, Nürnberg, Deutschland.,Tactical Rescue and Emergency Medicine Association (TREMA e. V.), Tübingen, Deutschland
| | - R Lechner
- Klinik für Anästhesiologie und Intensivmedizin, Sektion Notfallmedizin, Bundeswehrkrankenhaus Ulm, Oberer Eselsberg 40, 89081, Ulm, Deutschland.,Tactical Rescue and Emergency Medicine Association (TREMA e. V.), Tübingen, Deutschland
| | - F Josse
- Klinik für Anästhesiologie und Intensivmedizin, Sektion Notfallmedizin, Bundeswehrkrankenhaus Ulm, Oberer Eselsberg 40, 89081, Ulm, Deutschland.,Arbeitsgruppe "Taktische Medizin", Arbeitskreises Notfallmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin, Nürnberg, Deutschland.,Tactical Rescue and Emergency Medicine Association (TREMA e. V.), Tübingen, Deutschland
| | - M Bernhard
- Zentrale Notaufnahme, Universitätsklinikum Düsseldorf, Düsseldorf, Deutschland.,Arbeitsgruppe "Trauma- und Schockraummanagement", Arbeitskreis Notfallmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin, Nürnberg, Deutschland
| | - F Walcher
- Universitätsklinik für Unfallchirurgie, Universitätsklinikum Magdeburg, Magdeburg, Deutschland.,Sektion Notfall‑, Intensivmedizin und Schwerverletztenversorgung (NIS), Deutsche Gesellschaft für Unfallchirurgie (DGU), Berlin, Deutschland
| | - M Helm
- Klinik für Anästhesiologie und Intensivmedizin, Sektion Notfallmedizin, Bundeswehrkrankenhaus Ulm, Oberer Eselsberg 40, 89081, Ulm, Deutschland.,Arbeitsgruppe "Taktische Medizin", Arbeitskreises Notfallmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin, Nürnberg, Deutschland
| | - M Kulla
- Klinik für Anästhesiologie und Intensivmedizin, Sektion Notfallmedizin, Bundeswehrkrankenhaus Ulm, Oberer Eselsberg 40, 89081, Ulm, Deutschland. .,Arbeitsgruppe "Taktische Medizin", Arbeitskreises Notfallmedizin, Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin, Nürnberg, Deutschland. .,Sektion Notfall‑, Intensivmedizin und Schwerverletztenversorgung (NIS), Deutsche Gesellschaft für Unfallchirurgie (DGU), Berlin, Deutschland.
| |
Collapse
|
16
|
Valdez G. Effects of disease-afflicted and aging neurons on the musculoskeletal system. Bone 2019; 122:31-37. [PMID: 30695738 PMCID: PMC6444351 DOI: 10.1016/j.bone.2019.01.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 01/24/2019] [Accepted: 01/25/2019] [Indexed: 01/09/2023]
Abstract
The musculoskeletal system includes skeletal muscles, bones and innervating axons from neurons in the central and peripheral nervous systems. Together, they form the largest structure in the body. They also initiate and coordinate locomotion, provide structural stability, and contribute to metabolism and homeostasis. Because of these functions, much effort has been devoted to ascertaining the impact of acute and chronic stress, such as disease, injury and aging, on the musculoskeletal system. This review will examine the role of the nervous system in the deleterious changes that accrue in skeletal muscles and bones during the progression of neurologic diseases and with advancing age.
Collapse
Affiliation(s)
- Gregorio Valdez
- Fralin Biomedical Research Institute, Virginia Tech Carilion, Roanoke, VA, USA; Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA.
| |
Collapse
|
17
|
Leite APS, Pinto CG, Tibúrcio FC, Sartori AA, de Castro Rodrigues A, Barraviera B, Ferreira RS, Filadelpho AL, Matheus SMM. Heterologous fibrin sealant potentiates axonal regeneration after peripheral nerve injury with reduction in the number of suture points. Injury 2019; 50:834-847. [PMID: 30922661 DOI: 10.1016/j.injury.2019.03.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 01/10/2019] [Accepted: 03/16/2019] [Indexed: 02/02/2023]
Abstract
The use of suture associated with heterologous fibrin sealant has been highlighted for reconstruction after peripheral nerve injury, having the advantage of being safe for clinical use. In this study we compared the use of this sealant associated with reduced number of stitches with conventional suture after ischiatic nerve injury. 36 Wistar rats were divided into 4 groups: Control (C), Denervated (D), ischiatic nerve neurotmesis (6 mm gap); Suture (S), epineural anastomosis after 7 days from neurotmesis, Suture + Fibrin Sealant (SFS), anastomosis with only one suture point associated with Fibrin Sealant. Catwalk, electromyography, ischiatic and tibial nerve, soleus muscle morphological and morphometric analyses were performed. The amplitude and latency values of the Suture and Suture + Fibrin Sealant groups were similar and indicative of nerve regeneration.The ischiatic nerve morphometric analysis in the Suture + Fibrin Sealant showed superior values related to axons and nerve fibers area and diameter when compared to Suture group. In the Suture and Suture + Fibrin Sealant groups, there was an increase in muscle weight and in fast fibers frequency, it was a decrease in the percentage of collagen compared to group Denervated and in the neuromuscular junctions, the synaptic boutons were reestablished.The results suggest a protective effect at the lesion site caused by the fibrin sealant use. The stitches reduction minimizes the trauma caused by the needle and it accelerates the surgical practice. So the heterologous fibrin sealant use in nerve reconstruction should be considered.
Collapse
Affiliation(s)
- Ana Paula Silveira Leite
- Graduate Program on the General Bases of Surgery, Botucatu Medical School, Department of Anatomy, Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo State University (Unesp), Institute of Biosciences, Travessa da Rua Prof. Dr. Gilberti Moreno São Paulo, 18618-689, Botucatu, Brazil; Department of Anatomy, Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo State University (Unesp), Institute of Biosciences, Travessa da Rua Prof. Dr. Gilberti Moreno São Paulo, 18618-689, Botucatu, Brazil.
| | - Carina Guidi Pinto
- Graduate Program on the General Bases of Surgery, Botucatu Medical School, Department of Anatomy, Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo State University (Unesp), Institute of Biosciences, Travessa da Rua Prof. Dr. Gilberti Moreno São Paulo, 18618-689, Botucatu, Brazil; Department of Anatomy, Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo State University (Unesp), Institute of Biosciences, Travessa da Rua Prof. Dr. Gilberti Moreno São Paulo, 18618-689, Botucatu, Brazil
| | - Felipe Cantore Tibúrcio
- Department of Anatomy, Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo State University (Unesp), Institute of Biosciences, Travessa da Rua Prof. Dr. Gilberti Moreno São Paulo, 18618-689, Botucatu, Brazil
| | - Arthur Alves Sartori
- Department of Anatomy, Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo State University (Unesp), Institute of Biosciences, Travessa da Rua Prof. Dr. Gilberti Moreno São Paulo, 18618-689, Botucatu, Brazil
| | | | - Benedito Barraviera
- The Center for the Study of Venoms and Venomous Animals, UNESP, Botucatu, SP, Brazil
| | - Rui Seabra Ferreira
- The Center for the Study of Venoms and Venomous Animals, UNESP, Botucatu, SP, Brazil
| | - André Luis Filadelpho
- Department of Anatomy, Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo State University (Unesp), Institute of Biosciences, Travessa da Rua Prof. Dr. Gilberti Moreno São Paulo, 18618-689, Botucatu, Brazil
| | - Selma Maria Michelin Matheus
- Department of Anatomy, Universidade Estadual Paulista "Júlio de Mesquita Filho", São Paulo State University (Unesp), Institute of Biosciences, Travessa da Rua Prof. Dr. Gilberti Moreno São Paulo, 18618-689, Botucatu, Brazil
| |
Collapse
|
18
|
Wilson RJ, Drake JC, Cui D, Ritger ML, Guan Y, Call JA, Zhang M, Leitner LM, Gödecke A, Yan Z. Voluntary running protects against neuromuscular dysfunction following hindlimb ischemia-reperfusion in mice. J Appl Physiol (1985) 2019; 126:193-201. [PMID: 30433863 PMCID: PMC6383643 DOI: 10.1152/japplphysiol.00358.2018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 10/31/2018] [Accepted: 10/31/2018] [Indexed: 12/20/2022] Open
Abstract
Ischemia-reperfusion (IR) due to temporary restriction of blood flow causes tissue/organ damages under various disease conditions, including stroke, myocardial infarction, trauma, and orthopedic surgery. In the limbs, IR injury to motor nerves and muscle fibers causes reduced mobility and quality of life. Endurance exercise training has been shown to increase tissue resistance to numerous pathological insults. To elucidate the impact of endurance exercise training on IR injury in skeletal muscle, sedentary and exercise-trained mice (5 wk of voluntary running) were subjected to ischemia by unilateral application of a rubber band tourniquet above the femur for 1 h, followed by reperfusion. IR caused significant muscle injury and denervation at neuromuscular junction (NMJ) as early as 3 h after tourniquet release as well as depressed muscle strength and neuromuscular transmission in sedentary mice. Despite similar degrees of muscle atrophy and oxidative stress, exercise-trained mice had significantly reduced muscle injury and denervation at NMJ with improved regeneration and functional recovery following IR. Together, these data suggest that endurance exercise training preserves motor nerve and myofiber structure and function from IR injury and promote functional regeneration. NEW & NOTEWORTHY This work provides the first evidence that preemptive voluntary wheel running reduces neuromuscular dysfunction following ischemia-reperfusion injury in skeletal muscle. These findings may alter clinical practices in which a tourniquet is used to modulate blood flow.
Collapse
Affiliation(s)
- Rebecca J Wilson
- Department of Biochemistry and Molecular Genetics, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Joshua C Drake
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Di Cui
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Matthew L Ritger
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Yuntian Guan
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Jarrod A Call
- Department of Kinesiology, University of Georgia , Athens, Georgia
- Regenerative Bioscience Center, University of Georgia , Athens, Georgia
| | - Mei Zhang
- Department of Medicine, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| | - Lucia M Leitner
- Institute of Cardiovascular Physiology, Heinrich Heine University of Düsseldorf , Düsseldorf , Germany
| | - Axel Gödecke
- Institute of Cardiovascular Physiology, Heinrich Heine University of Düsseldorf , Düsseldorf , Germany
| | - Zhen Yan
- Department of Medicine, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
- Department of Pharmacology, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
- Department of Molecular Physiology and Biological Physics, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
- Center for Skeletal Muscle Research, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine , Charlottesville, Virginia
| |
Collapse
|
19
|
Vilchinskaya NA, Krivoi II, Shenkman BS. AMP-Activated Protein Kinase as a Key Trigger for the Disuse-Induced Skeletal Muscle Remodeling. Int J Mol Sci 2018; 19:ijms19113558. [PMID: 30424476 PMCID: PMC6274864 DOI: 10.3390/ijms19113558] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/02/2018] [Accepted: 11/09/2018] [Indexed: 12/25/2022] Open
Abstract
Molecular mechanisms that trigger disuse-induced postural muscle atrophy as well as myosin phenotype transformations are poorly studied. This review will summarize the impact of 5′ adenosine monophosphate -activated protein kinase (AMPK) activity on mammalian target of rapamycin complex 1 (mTORC1)-signaling, nuclear-cytoplasmic traffic of class IIa histone deacetylases (HDAC), and myosin heavy chain gene expression in mammalian postural muscles (mainly, soleus muscle) under disuse conditions, i.e., withdrawal of weight-bearing from ankle extensors. Based on the current literature and the authors’ own experimental data, the present review points out that AMPK plays a key role in the regulation of signaling pathways that determine metabolic, structural, and functional alternations in skeletal muscle fibers under disuse.
Collapse
Affiliation(s)
| | - Igor I Krivoi
- Department of General Physiology, St. Petersburg State University, St. Petersburg 199034, Russia.
| | - Boris S Shenkman
- Myology Laboratory, Institute of Biomedical Problems RAS, Moscow 123007, Russia.
| |
Collapse
|
20
|
Abstract
As the final output of the somatic nervous system, the neuromuscular junction (NMJ) is essential for all voluntary movements. The NMJ is also necessary for connected cells to function and survive. Because of this central role, much effort has been devoted to understanding the effects of aging, diseases, and injuries on the NMJ. These efforts have revealed a close relationship between aberrant changes at NMJs and its three cellular components - the presynaptic site on motor axons, the postsynaptic region on muscle fibers and perisynaptic Schwann cells. Here, we review the morphological and molecular changes associated with aging NMJs in rodents and humans. We also provide an overview of factors with potential roles in maintaining and repairing adult and aged NMJs.
Collapse
Affiliation(s)
- Thomas Taetzsch
- Virginia Tech Carilion Research Institute, Roanoke, Virginia, USA
| | - Gregorio Valdez
- Virginia Tech Carilion Research Institute, Roanoke, Virginia, USA.,Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, USA
| |
Collapse
|
21
|
Affiliation(s)
- Russell T. Hepple
- Department of Physical TherapyDepartment of Physiology & Functional Genomics, Institute of Aging, and Myology InstituteUniversity of FloridaGainesvilleFLUSA
| |
Collapse
|
22
|
Corrick RM, Tu H, Zhang D, Barksdale AN, Muelleman RL, Wadman MC, Li YL. Dexamethasone Protects Against Tourniquet-Induced Acute Ischemia-Reperfusion Injury in Mouse Hindlimb. Front Physiol 2018; 9:244. [PMID: 29615933 PMCID: PMC5870039 DOI: 10.3389/fphys.2018.00244] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 03/06/2018] [Indexed: 01/21/2023] Open
Abstract
Extremity injuries with hemorrhage have been a significant cause of death in civilian medicine and on the battlefield. The use of a tourniquet as an intervention is necessary for treatment to an injured limb; however, the tourniquet and subsequent release results in serious acute ischemia-reperfusion (IR) injury in the skeletal muscle and neuromuscular junction (NMJ). Much evidence demonstrates that inflammation is an important factor to cause acute IR injury. To find effective therapeutic interventions for tourniquet-induced acute IR injuries, our current study investigated effect of dexamethasone, an anti-inflammatory drug, on tourniquet-induced acute IR injury in mouse hindlimb. In C57/BL6 mice, a tourniquet was placed on unilateral hindlimb (left hindlimb) at the hip joint for 3 h, and then released for 24 h to induce IR. Three hours of tourniquet and 24 h of release (24-h IR) caused gastrocnemius muscle injuries including rupture of the muscle sarcolemma and necrosis (42.8 ± 2.3% for infarct size of the gastrocnemius muscle). In the NMJ, motor nerve terminals disappeared, and endplate potentials were undetectable in 24-h IR mice. There was no gastrocnemius muscle contraction in 24-h IR mice. Western blot data showed that inflammatory cytokines (TNFα and IL-1β) were increased in the gastrocnemius muscle after 24-h IR. Treatment with dexamethasone at the beginning of reperfusion (1 mg/kg, i.p.) significantly inhibited expression of TNFα and IL-1β, reduced rupture of the muscle sarcolemma and infarct size (24.8 ± 2.0%), and improved direct muscle stimulation-induced gastrocnemius muscle contraction in 24-h IR mice. However, this anti-inflammatory drug did not improve NMJ morphology and function, and sciatic nerve-stimulated skeletal muscle contraction in 24-h IR mice. The data suggest that one-time treatment with dexamethasone at the beginning of reperfusion only reduced structural and functional impairments of the skeletal muscle but not the NMJ through inhibiting inflammatory cytokines.
Collapse
Affiliation(s)
- Ryan M Corrick
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Huiyin Tu
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Dongze Zhang
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Aaron N Barksdale
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Robert L Muelleman
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Michael C Wadman
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Yu-Long Li
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| |
Collapse
|