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Liu H, Yuan S, Zheng K, Liu G, Li J, Ye B, Yin L, Li Y. IL-17 signaling pathway: A potential therapeutic target for reducing skeletal muscle inflammation. Cytokine 2024; 181:156691. [PMID: 38986253 DOI: 10.1016/j.cyto.2024.156691] [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: 06/09/2024] [Revised: 06/29/2024] [Accepted: 07/04/2024] [Indexed: 07/12/2024]
Abstract
BACKGROUND The interleukin-17 (IL-17) signaling pathway is intricately linked with immunity and inflammation; however, the association between the IL-17 signaling pathway and skeletal muscle inflammation remains poorly understood. The study aims to investigate the role of the IL-17 signaling pathway in skeletal muscle inflammation and to evaluate the therapeutic potential of anti-IL-17 antibodies in reducing muscle inflammation. METHODS A skeletal muscle inflammation model was induced by cardiotoxin (CTX) injection in C57BL6/J mice. Following treatment with an anti-IL-17 antibody, we conducted a comprehensive analysis integrating single-cell RNA sequencing (scRNA-seq), bioinformatics, enzyme-linked immunosorbent assay (ELISA), immunofluorescence, and Western blot techniques to elucidate underlying mechanisms. RESULTS scRNA-seq analysis revealed a significant increase in neutrophil numbers and activity in inflamed skeletal muscle compared to other cell types, including macrophages, T cells, B cells, endothelial cells, fast muscle cells, fibroblasts, and skeletal muscle satellite cells. The top 30 differentially expressed genes within neutrophils, along with 55 chemokines, were predominantly enriched in the IL-17 signaling pathway. Moreover, the IL-17 signaling pathway exhibited heightened expression in inflamed skeletal muscle, particularly within neutrophils. Treatment with anti-IL-17 antibody resulted in the suppression of IL-17 signaling pathway expression, accompanied by reduced levels of pro-inflammatory cytokines IL-1β, IL-6, and TNF-α, as well as decreased numbers and activity of Ly6g+/Mpo+ neutrophils compared to CTX-induced skeletal muscle inflammation. CONCLUSION Our findings suggest that the IL-17 signaling pathway plays a crucial role in promoting inflammation within skeletal muscle. Targeting this pathway may hold promise as a therapeutic strategy for ameliorating the inflammatory micro-environment and reducing cytokine production.
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Affiliation(s)
- Hongwen Liu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong Province, China; Department of Discipline Construction Office, Panzhihua Central Hospital, Panzhihua, Sichuan Province, China
| | - Shiguo Yuan
- Department of Orthopaedic, Hainan Hospital, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Haikou, Hainan Province, China; Department of Orthopaedic, Affiliated Hospital of Chinese Medicine, Hainan Medical University, Haikou, Hainan Province, China
| | - Kai Zheng
- Department of Orthopaedic, Hainan Hospital, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Haikou, Hainan Province, China; Department of Orthopaedic, Affiliated Hospital of Chinese Medicine, Hainan Medical University, Haikou, Hainan Province, China
| | - Gaofeng Liu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Junhua Li
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Baofei Ye
- Department of Orthopaedic, Hainan Hospital, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Haikou, Hainan Province, China; Department of Orthopaedic, Affiliated Hospital of Chinese Medicine, Hainan Medical University, Haikou, Hainan Province, China
| | - Li Yin
- Department of Discipline Construction Office, Panzhihua Central Hospital, Panzhihua, Sichuan Province, China.
| | - Yikai Li
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong Province, China; The Third Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.
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Harrigan ME, Filous AR, Vadala CP, Webb A, Pietrzak M, Sahenk Z, Prüss H, Reiser PJ, Popovich PG, Arnold WD, Schwab JM. Lesion level-dependent systemic muscle wasting after spinal cord injury is mediated by glucocorticoid signaling in mice. Sci Transl Med 2023; 15:eadh2156. [PMID: 38117902 DOI: 10.1126/scitranslmed.adh2156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 11/29/2023] [Indexed: 12/22/2023]
Abstract
An incomplete mechanistic understanding of skeletal muscle wasting early after spinal cord injury (SCI) precludes targeted molecular interventions. Here, we demonstrated systemic wasting that also affected innervated nonparalyzed (supralesional) muscles and emerged within 1 week after experimental SCI in mice. Systemic muscle wasting caused muscle weakness, affected fast type 2 myofibers preferentially, and became exacerbated after high (T3) compared with low (T9) thoracic paraplegia, indicating lesion level-dependent ("neurogenic") mechanisms. The wasting of nonparalyzed muscle and its rapid onset and severity beyond what can be explained by disuse implied unknown systemic drivers. Muscle transcriptome and biochemical analysis revealed a glucocorticoid-mediated catabolic signature early after T3 SCI. SCI-induced systemic muscle wasting was mitigated by (i) endogenous glucocorticoid ablation (adrenalectomy) and (ii) pharmacological glucocorticoid receptor (GR) blockade and was (iii) completely prevented after T3 relative to T9 SCI by genetic muscle-specific GR deletion. These results suggest that neurogenic hypercortisolism contributes to a rapid systemic and functionally relevant muscle wasting syndrome early after paraplegic SCI in mice.
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Affiliation(s)
- Markus E Harrigan
- Department of Neurology, Spinal Cord Injury Division (Paraplegiology), College of Medicine, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
- Medical Scientist Training Program, College of Medicine, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
- Neuroscience Research Institute, Ohio State University, Columbus, OH 43210, USA
- Belford Center for Spinal Cord Injury, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
| | - Angela R Filous
- Department of Neurology, Spinal Cord Injury Division (Paraplegiology), College of Medicine, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
- Neuroscience Research Institute, Ohio State University, Columbus, OH 43210, USA
- Belford Center for Spinal Cord Injury, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
| | - Christopher P Vadala
- Department of Neurology, Spinal Cord Injury Division (Paraplegiology), College of Medicine, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
- Neuroscience Research Institute, Ohio State University, Columbus, OH 43210, USA
- Belford Center for Spinal Cord Injury, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
| | - Amy Webb
- Department of Biomedical Informatics, College of Medicine, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
| | - Maciej Pietrzak
- Department of Biomedical Informatics, College of Medicine, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
| | - Zarife Sahenk
- Center for Gene Therapy, Research Institute at Nationwide Children's Hospital, Columbus, OH 43205, USA
- Department of Pediatrics and Neurology, Nationwide Children's Hospital and Ohio State University, Columbus, OH 43205, USA
- Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - Harald Prüss
- Department of Neurology and Experimental Neurology, Charité-Universitätsmedizin, 10117 Berlin, Germany
- German Center for Neurodegenerative Diseases (DZNE), 10117 Berlin, Germany
| | - Peter J Reiser
- Division of Biosciences, College of Dentistry, Ohio State University, Columbus, OH 43210, USA
| | - Phillip G Popovich
- Neuroscience Research Institute, Ohio State University, Columbus, OH 43210, USA
- Belford Center for Spinal Cord Injury, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
- Department of Neuroscience, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
| | - W David Arnold
- NextGen Precision Health, University of Missouri, Columbia, MO 65211, USA
- Department of Physical Medicine and Rehabilitation, University of Missouri, Columbia, MO 65212, USA
| | - Jan M Schwab
- Department of Neurology, Spinal Cord Injury Division (Paraplegiology), College of Medicine, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
- Neuroscience Research Institute, Ohio State University, Columbus, OH 43210, USA
- Belford Center for Spinal Cord Injury, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
- Department of Neuroscience, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
- Department of Physical Medicine and Rehabilitation, Ohio State University, Wexner Medical Center, Columbus, OH 43210, USA
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Sun L, Fan J, Song G, Cai S, Fan C, Zhong Y, Li Y. Exposure to phthalates is associated with grip strength in US adults. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 209:111787. [PMID: 33333342 DOI: 10.1016/j.ecoenv.2020.111787] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/25/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
The potential association of exposure to phthalates with muscle strength was reported in previous animal experiments. However, their association was rarely directly investigated in general populations. Thus, we aimed to ascertain the association of exposure to phthalates with grip strength using cross-sectional analysis which included 2436 individuals aged ≥ 20 years from the National Health and Nutrition Examination Survey (NHANES) during 2011-2014. The multivariable linear regression models were performed with the adjustment of related covariates. The results suggested that a one-unit increase in log-transformed phthalate metabolites (μg/g creatinine) was inversely associated with grip strength, including Mono-(2-ethyl)-hexyl phthalate (β: -2.727 kg, 95% CI: -3.452, -2.002), Mono-(2-ethyl-5-hydroxyhexyl) phthalate (β: -3.721 kg, 95% CI: -4.836, -2.607), Mono-(2-ethyl-5-oxohexl) phthalate (β: -4.669 kg, 95% CI: -5.761, -3.577), Mono-2-ethyl-5-carboxypentyl phthalate (β: -4.756 kg, 95% CI: -5.957, -3.554), Mono-carboxyoctyl phthalate (β: -1.324 kg, 95% CI: -2.412, -0.235), Mono-carboxynonyl phthalate (β: -2.036 kg, 95% CI: -3.185, -0.886), Mono-benzyl phthalate (β: -2.940 kg, 95% CI: -3.853, -2.026), Mono-n-butyl phthalate (β: -2.100 kg, 95% CI: -3.474, -0.726), Mono-isobutyl phthalate (β: -2.982 kg, 95% CI: -4.331, -1.633), and Mono-ethyl phthalate (β: -1.709 kg, 95% CI: -2.368, -1.050). In subgroup analyses, the associations remained largely unchanged when the samples were stratified by gender and age; However they became ambiguous among underweight subjects when the samples were stratified by BMI status. Overall, exposure to phthalates was inversely associated with grip strength among US adults, regardless of their genders and ages. The suggestive potential BMI status-specific effects of phthalates on grip strength were observed.
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Affiliation(s)
- Lingling Sun
- Department of Orthopaedics, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jiayao Fan
- School of Public Health, Hangzhou Medical College, Hangzhou, China
| | - Guangzhong Song
- School of Laboratory Medicine, Hangzhou Medical College, Hangzhou, China
| | - Shaofang Cai
- Department of Science and Education, the Second Affiliated Hospital of Xiamen Medical College, Xiamen, China
| | - Chunhong Fan
- School of Public Health, Hangzhou Medical College, Hangzhou, China
| | - Yaohong Zhong
- School of Public Health, Hangzhou Medical College, Hangzhou, China
| | - Yingjun Li
- School of Public Health, Hangzhou Medical College, Hangzhou, China.
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Pinheiro-Dardis CM, Gutierres VO, Assis RP, Peviani SM, Delfino GB, Durigan JLQ, Salvini TDF, Baviera AM, Brunetti IL. Insulin treatment reverses the increase in atrogin-1 expression in atrophied skeletal muscles of diabetic rats with acute joint inflammation. Ther Clin Risk Manag 2018; 14:275-286. [PMID: 29497304 PMCID: PMC5818839 DOI: 10.2147/tcrm.s142948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background The aim of this study was to evaluate the changes in biomarkers of skeletal muscle proteolysis (atrogin-1, muscle RING finger-1 protein [MuRF-1]) and inflammation (nuclear factor kappa-B) in skeletal muscles of rats under two catabolic conditions, diabetes mellitus (DM) and acute joint inflammation, and the effects of insulin therapy. Materials and methods Male Wistar rats were divided into groups without diabetes – normal (N), saline (NS), or ι-carrageenan (NCa) injection into the tibiotarsal joint – and groups with diabetes – diabetes (D), plus insulin (DI), saline (DS), or ι-carrageenan (DCa) injection into the tibiotarsal joint, or ι-carrageenan injection and treatment with insulin (DCaI). Three days after ι-carrageenan injection (17 days after diabetes induction), tibialis anterior (TA) and soleus (SO) skeletal muscles were used for analysis. Results DM alone caused a significant decrease in the mass of TA and SO muscles, even with low levels of atrogenes (atrogin-1, MuRF-1), which could be interpreted as an adaptive mechanism to spare muscle proteins under this catabolic condition. The loss of muscle mass was exacerbated when ι-carrageenan was administered in the joints of diabetic rats, in association with increased expression of atrogin-1, MuRF-1, and nuclear factor kappa-B. Treatment with insulin prevented the increase in atrogin-1 (TA, SO) and the loss of muscle mass (SO) in diabetic-carrageenan rats; in comparison with TA, SO muscle was more responsive to the anabolic actions of insulin. Conclusion Acute joint inflammation overcame the adaptive mechanism in diabetic rats to prevent excessive loss of muscle mass, worsening the catabolic state. The treatment of diabetic-carrageenan rats with insulin prevented the loss of skeletal muscle mass mainly via atrogin-1 inhibition. Under the condition of DM and inflammation, muscles with the prevalence of slow-twitch, type 1 fibers were more responsive to insulin treatment, recovering the ability to grow.
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Affiliation(s)
- Clara Maria Pinheiro-Dardis
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
| | - Vânia Ortega Gutierres
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
| | - Renata Pires Assis
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
| | - Sabrina Messa Peviani
- Federal University of São Carlos (UFSCar), Department of Physical Therapy, São Carlos, São Paulo, Brazil
| | - Gabriel Borges Delfino
- Federal University of São Carlos (UFSCar), Department of Physical Therapy, São Carlos, São Paulo, Brazil
| | | | - Tania de Fátima Salvini
- Federal University of São Carlos (UFSCar), Department of Physical Therapy, São Carlos, São Paulo, Brazil
| | - Amanda Martins Baviera
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
| | - Iguatemy Lourenço Brunetti
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
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Norden DM, Bicer S, Clark Y, Jing R, Henry CJ, Wold LE, Reiser PJ, Godbout JP, McCarthy DO. Tumor growth increases neuroinflammation, fatigue and depressive-like behavior prior to alterations in muscle function. Brain Behav Immun 2015; 43:76-85. [PMID: 25102452 PMCID: PMC4258420 DOI: 10.1016/j.bbi.2014.07.013] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 07/01/2014] [Accepted: 07/08/2014] [Indexed: 12/21/2022] Open
Abstract
Cancer patients frequently suffer from fatigue, a complex syndrome associated with loss of muscle mass, weakness, and depressed mood. Cancer-related fatigue (CRF) can be present at the time of diagnosis, during treatment, and persists for years after treatment. CRF negatively influences quality of life, limits functional independence, and is associated with decreased survival in patients with incurable disease. Currently there are no effective treatments to reduce CRF. The aim of this study was to use a mouse model of tumor growth and discriminate between two main components of fatigue: loss of muscle mass/function and altered mood/motivation. Here we show that tumor growth increased fatigue- and depressive-like behaviors, and reduced body and muscle mass. Decreased voluntary wheel running activity (VWRA) and increased depressive-like behavior in the forced swim and sucrose preference tests were evident in tumor-bearing mice within the first two weeks of tumor growth and preceded the loss of body and muscle mass. At three weeks, tumor-bearing mice had reduced grip strength but this was not associated with altered expression of myosin isoforms or impaired contractile properties of muscles. These increases in fatigue and depressive-like behaviors were paralleled by increased expression of IL-1β mRNA in the cortex and hippocampus. Minocycline administration reduced tumor-induced expression of IL-1β in the brain, reduced depressive-like behavior, and improved grip strength without altering muscle mass. Taken together, these results indicate that neuroinflammation and depressed mood, rather than muscle wasting, contribute to decreased voluntary activity and precede major changes in muscle contractile properties with tumor growth.
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Affiliation(s)
- Diana M Norden
- Department of Neuroscience, The Ohio State University, 333 W. 10th Ave., Columbus, OH 43210, United States
| | - Sabahattin Bicer
- Division of Biosciences, College of Dentistry, The Ohio State University, 305 W. 12th Ave., Columbus, OH, United States
| | - Yvonne Clark
- College of Nursing, The Ohio State University, 1585 Neil Ave., Columbus, OH, United States
| | - Runfeng Jing
- College of Nursing, The Ohio State University, 1585 Neil Ave., Columbus, OH, United States
| | - Christopher J Henry
- Department of Neuroscience, The Ohio State University, 333 W. 10th Ave., Columbus, OH 43210, United States
| | - Loren E Wold
- College of Nursing, The Ohio State University, 1585 Neil Ave., Columbus, OH, United States; Department of Physiology and Cell Biology, The Ohio State University, 370 W. 9th Ave., Columbus, OH, United States
| | - Peter J Reiser
- Division of Biosciences, College of Dentistry, The Ohio State University, 305 W. 12th Ave., Columbus, OH, United States
| | - Jonathan P Godbout
- Department of Neuroscience, The Ohio State University, 333 W. 10th Ave., Columbus, OH 43210, United States; Institute for Behavioral Medicine Research, The Ohio State University, 460 Medical Center Dr., Columbus, OH, United States
| | - Donna O McCarthy
- College of Nursing, The Ohio State University, 1585 Neil Ave., Columbus, OH, United States.
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Reiser PJ, Bicer S. Electrophoretic separation of reptilian skeletal and cardiac muscle myosin heavy chain isoforms: dependence on gel format. Electrophoresis 2014; 35:2615-20. [PMID: 24981405 DOI: 10.1002/elps.201400221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 06/13/2014] [Accepted: 06/13/2014] [Indexed: 11/10/2022]
Abstract
This report provides a comparison of multiple gel formats to study myosin heavy chain (MHC) isoforms that are expressed in reptilian skeletal and cardiac muscles of five turtle species, water monitor, and prehensile tailed skink. Three gel formats were tested. The results identify one format that is superior, for the overall extent of electrophoretic separation and for the assessment of the number of MHC isoforms in reptilian striated muscles. The same format was shown previously to separate MHC isoforms that are expressed in American alligator. The results also show that another gel format reveals the distinct electrophoretic mobility of MHC isoforms in atrial, ventricular, and jaw adductor samples, compared to those expressed in skeletal muscles in the limbs and elsewhere in the body. In addition, the results reveal that the electrophoretic mobility of specific MHC isoforms, relative to other isoforms, depends on the gel format, as shown previously for mammalian and avian species. The discovery of the expression of masticatory MHC, which is abundantly expressed in jaw adductors of members of Carnivora and several other vertebrate orders, in the homologous muscles of prehensile tailed skink, an herbivore, and the carnivorous water monitor, was made during the course of this study.
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Affiliation(s)
- Peter J Reiser
- Division of Biosciences, College of Dentistry, Ohio State University, Columbus, OH, USA
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Song Y, Karisnan K, Noble PB, Berry CA, Lavin T, Moss TJM, Bakker AJ, Pinniger GJ, Pillow JJ. In utero LPS exposure impairs preterm diaphragm contractility. Am J Respir Cell Mol Biol 2013; 49:866-74. [PMID: 23795611 DOI: 10.1165/rcmb.2013-0107oc] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Preterm birth is associated with inflammation of the fetal membranes (chorioamnionitis). We aimed to establish how chorioamnionitis affects the contractile function and phenotype of the preterm diaphragm. Pregnant ewes received intra-amniotic injections of saline or 10 mg LPS, 2 days or 7 days before delivery at 121 days of gestation (term = 150 d). Diaphragm strips were dissected for the assessment of contractile function after terminal anesthesia. The inflammatory cytokine response, myosin heavy chain (MHC) fibers, proteolytic pathways, and intracellular molecular signaling were analyzed using quantitative PCR, ELISA, immunofluorescence staining, biochemical assays, and Western blotting. Diaphragm peak twitch force and maximal tetanic force were approximately 30% lower than control values in the 2-day and 7-day LPS groups. Activation of the NF-κB pathway, an inflammatory response, and increased proteasome activity were observed in the 2-day LPS group relative to the control or 7-day LPS group. No inflammatory response was evident after a 7-day LPS exposure. Seven-day LPS exposure markedly decreased p70S6K phosphorylation, but no effect on other signaling pathways was evident. The proportion of MHC IIa fibers was lower than that for control samples in the 7-day LPS group. MHC I fiber proportions did not differ between groups. These results demonstrate that intrauterine LPS impairs preterm diaphragmatic contractility after 2-day and 7-day exposures. Diaphragm dysfunction, resulting from 2-day LPS exposure, was associated with a transient activation of proinflammatory signaling, with subsequent increased atrophic gene expression and enhanced proteasome activity. Persistently impaired contractility for the 7-day LPS exposure was associated with the down-regulation of a key component of the protein synthetic signaling pathway and a reduction in the proportions of MHC IIa fibers.
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Affiliation(s)
- Yong Song
- 1 School of Anatomy, Physiology, and Human Biology, and
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Norman K, Stobäus N, Kulka K, Schulzke J. Effect of inflammation on handgrip strength in the non-critically ill is independent from age, gender and body composition. Eur J Clin Nutr 2013; 68:155-8. [DOI: 10.1038/ejcn.2013.261] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 11/06/2013] [Accepted: 11/07/2013] [Indexed: 11/09/2022]
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Kim JA, Park HS, Park KI, Hong GE, Nagappan A, Zhang J, Han DY, Shin SC, Won CG, Kim EH, Kim GS. Proteome Analysis of the Anti-inflammatory Response of Flavonoids Isolated from Korean Citrus aurantium L. in Lipopolysaccharide-Induced L6 Rat Skeletal Muscle Cells. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2013; 41:901-12. [DOI: 10.1142/s0192415x13500602] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Skeletal muscle is an important organ in our body and a dynamic composite of proteins. Citrus aurantium L. has been widely used in oriental medicine in Eastern Asia for a long time. It contains over 100 bioactive compounds and flavonoids that regulate the inflammatory response and tumorigenesis, through various mechanisms. In the present study, we investigated changes in the protein pattern using two-dimensional electrophoresis (2-DE) and matrix assisted laser desorption ionization time of flight mass spectroscopy (MALDI-TOF/MS) to assess the anti-inflammatory effect of flavonoids isolated from Korean C. aurantium L. in lipopolysaccharide (LPS)-induced L6 cells. L6 skeletal muscle cells were pretreated with flavonoids for 1 h and stimulated with LPS for 24 h. Proteins from the L6 cells of the control, LPS treated and flavonoid treated groups were extracted and resolved by 2-DE using pH 4–7 IPG strips loaded with 150 μg of protein. Forty-one differentially expressed protein spots were identified (more than two-fold was considered significant, p < 0.05), and 18 were detected by MALDI-TOF/MS. These results suggest that proteomics can be used to identify changes in the expression of marker proteins and the anti-inflammatory effect of flavonoids isolated from Korean C. aurantium L.
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Affiliation(s)
- Jin-A Kim
- Korea National Animal Research Resource Center, Korea National Animal Bio-Resource Bank, Research Institute of Life Science, Gazwa, Jinju, Republic of Korea
| | - Hyeon-Soo Park
- Research Institute of Life Science, College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, Republic of Korea
| | - Kwang-Il Park
- Research Institute of Life Science, College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, Republic of Korea
| | - Gyeong-Eun Hong
- Research Institute of Life Science, College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, Republic of Korea
| | - Arulkumar Nagappan
- Research Institute of Life Science, College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, Republic of Korea
| | - Jue Zhang
- Key Laboratory of Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu, China
| | - Dae-Yong Han
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, Republic of Korea
| | - Sung-Chul Shin
- Department of Chemistry, Research Institute of Life Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Chung-Gil Won
- Research Institute of Life Science, College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, Republic of Korea
| | - Eun-Hee Kim
- Department of Nursing Science, International University of Korea, Sangmoon, Jinju, Republic of Korea
| | - Gon-Sup Kim
- Research Institute of Life Science, College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, Republic of Korea
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Pinniger GJ, Lavin T, Bakker AJ. Skeletal muscle weakness caused by carrageenan-induced inflammation. Muscle Nerve 2012; 46:413-20. [PMID: 22907233 DOI: 10.1002/mus.23318] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION The skeletal muscle weakness associated with many chronic diseases has been attributed to the catabolic effect of pro-inflammatory cytokines. We aimed to determine if local muscle inflammation has direct affects on contractile function and contributes to muscle weakness independent of muscle atrophy or mechanical injury. METHODS Local muscle inflammation was induced by injecting an algal-derived polysaccharide, carrageenan (10 mg/kg), into the right tibialis anterior muscle in healthy ARC mice. The contralateral muscle was injected with sterile isotonic saline, and the muscles were removed after 24 h for measurement of contractile function and cytokine concentration. RESULTS Carrageenan significantly reduced maximum specific force, decreased the maximum rate of force development, altered the force-frequency relationship, and increased intramuscular levels of pro-inflammatory cytokines and chemokines. CONCLUSIONS These results indicate that carrageenan directly affects contractile function and causes skeletal muscle weakness. Local muscle inflammation may contribute to the weakness observed in inflammatory related disorders.
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Affiliation(s)
- Gavin J Pinniger
- School of Biomedical, Biomolecular and Chemical Sciences, The University of Western Australia, Crawley, Western Australia, 6009 Australia.
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van der Poel C, Gosselin LE, Schertzer JD, Ryall JG, Swiderski K, Wondemaghen M, Lynch GS. Ageing prolongs inflammatory marker expression in regenerating rat skeletal muscles after injury. JOURNAL OF INFLAMMATION-LONDON 2011; 8:41. [PMID: 22206492 PMCID: PMC3339359 DOI: 10.1186/1476-9255-8-41] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 12/29/2011] [Indexed: 01/06/2023]
Abstract
BACKGROUND Some of the most serious consequences of normal ageing relate to its effects on skeletal muscle, particularly significant wasting and associated weakness, termed "sarcopenia". The underlying mechanisms of sarcopenia have yet to be elucidated completely but an altered muscle inflammatory response after injury is a likely contributing factor. In this study we investigated age-related changes in the expression of numerous inflammatory markers linked to successful muscle regeneration. METHODS Right extensor digitorum longus (EDL) muscles from young (3 month), adult (12 month) and old (24 month) male F344 rats were injected with bupivacaine hydrochloride to cause complete muscle fibre degeneration, then excised 12, 24, 36, and 72 hours later (n = 5/age group/time point). We used qRT-PCR to quantify the mRNA expression levels of the inflammatory markers TNFα, IFNγ, IL1, IL18, IL6, and CD18 as well as regenerative markers MyoD and myogenin. RESULTS Inflammatory markers were all increased significantly in all age groups after myotoxic injury. There was a trend for expression of inflammatory markers to be higher in uninjured muscles of old rats, especially at 72 hours post injury where the expression levels of several markers was significantly higher in old compared with young and adult rats. There was also a decrease in the expression of regenerative markers in old rats at 72 hours post injury. CONCLUSION Our findings identify a prolonged inflammatory signature in injured muscles from old compared with young and adult rats together with a blunted expression of key markers of regeneration in muscles of old rats. Importantly, our findings identify potential targets for future therapeutic strategies for improving the regenerative capacity of skeletal muscle during ageing.
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Affiliation(s)
- Chris van der Poel
- Basic and Clinical Myology Laboratory, Department of Physiology, The University of Melbourne, Victoria, 3010, Australia.
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Chen XK, Rathbone CR, Walters TJ. Treatment of Tourniquet-Induced Ischemia Reperfusion Injury with Muscle Progenitor Cells. J Surg Res 2011; 170:e65-73. [DOI: 10.1016/j.jss.2011.05.061] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 05/20/2011] [Accepted: 05/27/2011] [Indexed: 10/18/2022]
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Vordenbäumen S, Braukmann A, Petermann K, Scharf A, Bleck E, von Mikecz A, Jose J, Schneider M. Casein α s1 is expressed by human monocytes and upregulates the production of GM-CSF via p38 MAPK. THE JOURNAL OF IMMUNOLOGY 2010; 186:592-601. [PMID: 21135174 DOI: 10.4049/jimmunol.1001461] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Caseins are major constituents of mammalian milks that are thought to be exclusively expressed in mammary glands and to function primarily as a protein source, as well as to ameliorate intestinal calcium uptake. In addition, proinflammatory and immunomodulatory properties have been reported for bovine caseins. Our aim was to investigate whether human casein α s1 (CSN1S1) is expressed outside the mammary gland and possesses immunomodulatory functions in humans as well. For this purpose, CSN1S1 mRNA was detected in primary human monocytes and CD4(+) and CD8(+) T cells, but not in CD19(+) B cells. CSN1S1 protein was traceable in supernatants of cultured primary human CD14(+) monocytes by ELISA. Similarly, CSN1S1 mRNA and protein were detected in the human monocytic cell lines HL60, U937, and THP1 but not in Mono Mac 6 cells. Moreover, permeabilized human monocytes and HL60 cells could be stained by immunofluorescence, indicating intracellular expression. Recombinant human CSN1S1 was bound to the surface of Mono Mac 6 cells and upregulated the expression of GM-CSF mRNA in primary human monocytes and Mono Mac 6 cells in a time- and concentration-dependent manner. A similar increase in GM-CSF protein was found in the culture supernatants. CSN1S1-dependent upregulation of GM-CSF was specifically blocked by the addition of the p38 MAPK inhibitor ML3403. Our results indicated that human CSN1S1 may possess an immunomodulatory role beyond its nutritional function in milk. It is expressed in human monocytes and stimulates the expression of the proinflammatory cytokine GM-CSF.
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Affiliation(s)
- Stefan Vordenbäumen
- Department of Endocrinology, Diabetology and Rheumatology, Institute of Pharmaceutical Chemistry, Heinrich Heine University, Düsseldorf, Germany.
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