1
|
Neely OC, Domingos AI, Paterson DJ. Macrophages Can Drive Sympathetic Excitability in the Early Stages of Hypertension. Front Cardiovasc Med 2022; 8:807904. [PMID: 35155614 PMCID: PMC8828732 DOI: 10.3389/fcvm.2021.807904] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/21/2021] [Indexed: 12/31/2022] Open
Abstract
Hypertension is a major health burden worldwide with many cases resistant to current treatments. Hyperactivity of the sympathetic nervous contributes to the etiology and progression of the disease, where emerging evidence suggests that inflammation may underpin the development of sympathetic dysautonomia. This study examined whether macrophages could drive the sympathetic phenotype in Spontaneously Hypertensive Rats (SHR) before animals develop high pressure. Stellate neurons from wild-type control Wistar rats and SHRs were co-cultured with blood leukocytes from their own strain, and also crossed cultured between strains. The calcium transient response to nicotinic stimulation was recorded using Fura-2 calcium imaging, where SHR neurons had a greater calcium transient compared with Wistar neurons. However, when co-cultured with leukocytes, Wistar neurons began to phenocopy the SHR sympathetic hyperactivity, while the SHR neurons themselves were unaltered. Resident leukocyte populations of the SHR and Wistar stellate ganglia were then compared using flow cytometry, where there was a shift in monocyte-macrophage subset proportions. While classical monocyte-macrophages were predominant in the Wistar, there were relatively more of the non-classical subset in the SHR, which have been implicated in pro-inflammatory roles in a number of diseases. When bone marrow-derived macrophages (BMDMs) were co-cultured with stellate neurons, they made Wistar neurons recapitulate the SHR nicotinic stimulated calcium transient. Wistar BMDMs however, had no effect on SHR neurons, even though SHR BMDMs increased SHR neuron responsiveness further above their hyper-responsive state. Taken together, these findings show that macrophages can be potent enhancers of sympathetic neuronal calcium responsiveness, and thus could conceivably play a role in peripheral sympathetic hyperactivity observed in the early stages of hypertension.
Collapse
Affiliation(s)
- Oliver C Neely
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Ana I Domingos
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - David J Paterson
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| |
Collapse
|
2
|
Ouyang X, Li S, Ding Y, Xin F, Liu M. Foxf1 gene increases the risk of osteoporosis in rats by inhibiting osteoblast formation and promoting osteoclast differentiation through the upregulation of NF-κB pathway. JOURNAL OF MUSCULOSKELETAL & NEURONAL INTERACTIONS 2022; 22:242-250. [PMID: 35642703 PMCID: PMC9186464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES a) To explore the expression of Foxf1 and NF-κB in bone tissue of ovariectomized rats with osteoporosis and b) to investigate the role and mechanism of NF-κB pathway regulated by Foxf1 gene in the differentiation and formation of rat osteoclasts and osteoblasts with cell experiments. METHODS Ovariectomized rat model of osteoporosis was established with 3-month-old female SD rats. The rats were divided into sham group (n=10) and osteoporosis group (n=10). Real time fluorescent quantitative PCR and Western blot were used to detect the expression levels of Foxf1 and NF-κB genes and proteins in the femur tissues of rats and analyze their correlation. RESULTS Both Foxf1 and NF- κB were highly expressed in the femur tissues. Upon the overexpression of Foxf1 gene in osteoblasts and osteoclasts in vitro, the gene and protein expression of NF-κB were also upregulated, significantly reducing the gene and protein expression levels of osteogenic factors, including ATF4, OCN, ALP and Runx2. CONCLUSIONS Foxf1 gene could inhibit osteoblast formation and promote osteoclast differentiation by NF-κB pathway, which may increase the risk of osteoporosis in rats.
Collapse
Affiliation(s)
- Xiao Ouyang
- Department of Orthopedic Surgery, Xuzhou Third People’s Hospital, Affiliated Xuzhou Hospital of Jiangsu University, Affiliated Xuzhou Third People’s Hospital of Xuzhou Medical University, Xuzhou, China,Corresponding author: Xiao Ouyang, Department of Orthopedic Surgery, Xuzhou Third People’s Hospital, Affiliated Xuzhou Hospital of Jiangsu University, Affiliated Xuzhou Third People’s Hospital of Xuzhou Medical University, No. 131 Huancheng Road, Gulou District, Xuzhou 221005, Jiangsu Province, China E-mail:
| | - Shimin Li
- Department of Orthopedic Surgery, Xuzhou Third People’s Hospital, Affiliated Xuzhou Hospital of Jiangsu University, Affiliated Xuzhou Third People’s Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yunzhi Ding
- Department of Orthopedic Surgery, Xuzhou Third People’s Hospital, Affiliated Xuzhou Hospital of Jiangsu University, Affiliated Xuzhou Third People’s Hospital of Xuzhou Medical University, Xuzhou, China
| | - Feng Xin
- Department of Orthopedic Surgery, Xuzhou Third People’s Hospital, Affiliated Xuzhou Hospital of Jiangsu University, Affiliated Xuzhou Third People’s Hospital of Xuzhou Medical University, Xuzhou, China
| | - Meng Liu
- Department of Orthopedic Surgery, Xuzhou Third People’s Hospital, Affiliated Xuzhou Hospital of Jiangsu University, Affiliated Xuzhou Third People’s Hospital of Xuzhou Medical University, Xuzhou, China
| |
Collapse
|
3
|
Cui X, Xing R, Tian Y, Wang M, Sun Y, Xu Y, Yang Y, Zhao Y, Xie L, Xiao Y, Li D, Zheng B, Liu M, Chen H. The G2A Receptor Deficiency Aggravates Atherosclerosis in Rats by Regulating Macrophages and Lipid Metabolism. Front Physiol 2021; 12:659211. [PMID: 34381373 PMCID: PMC8351205 DOI: 10.3389/fphys.2021.659211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 04/13/2021] [Indexed: 11/16/2022] Open
Abstract
The orphan G protein-coupled receptor G2A has been linked to atherosclerosis development. However, available data from mouse models are controversial. Rat G2A receptor bears more similarities with its human homolog. We proposed that the atherosclerosis model established from Ldlr–/– rat, which has been reported to share more similar phenotypes with the human disease, may help to further understand this lipid receptor. G2A deletion was found markedly aggravated in the lipid disorder in the rat model, which has not been reported in mouse studies. Examination of aortas revealed exacerbated atherosclerotic plaques in G2A deficient rats, together with increased oxidative stress and macrophage accumulation. In addition, consistently promoted migration and apoptosis were noticed in G2A deficient macrophages, even in macrophages from G2A single knockout rats. Further analysis found significantly declined phosphorylation of PI3 kinase (PI3K) and AKT, together with reduced downstream genes Bcl2 and Bcl-xl, suggesting possible involvement of PI3K/AKT pathway in G2A regulation to macrophage apoptosis. These data indicate that G2A modulates atherosclerosis by regulating lipid metabolism and macrophage migration and apoptosis. Our study provides a new understanding of the role of G2A in atherosclerosis, supporting it as a potential therapeutic target.
Collapse
Affiliation(s)
- Xueqin Cui
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Roumei Xing
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yue Tian
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Man Wang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yue Sun
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yongqian Xu
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yiqing Yang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yongliang Zhao
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Ling Xie
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Yufang Xiao
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Dali Li
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Biao Zheng
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China.,Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, United States
| | - Mingyao Liu
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| | - Huaqing Chen
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, Institute of Biomedical Sciences, East China Normal University, Shanghai, China
| |
Collapse
|
4
|
Pan D, Sayanagi J, Acevedo-Cintrón JA, Schellhardt L, Snyder-Warwick AK, Mackinnon SE, Wood MD. Liposomes embedded within fibrin gels facilitate localized macrophage manipulations within nerve. J Neurosci Methods 2020; 348:108981. [PMID: 33075327 DOI: 10.1016/j.jneumeth.2020.108981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 09/03/2020] [Accepted: 10/13/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Understanding the role of macrophages at discrete spatial locations during nerve regeneration after injury is important. But, methodologies that systemically manipulate macrophages can obscure their roles within discrete spatial locations within nerve. NEW METHOD Liposomes were embedded within fibrin gels to construct a delivery system that facilitated macrophage-specific manipulations at a sole spatial region, as macrophages accumulated within the fibrin. Clodronate liposomes were characterized for their toxicity to specific cells composing nerve in vitro, then tested for macrophage-specific depletion in vivo. This delivery system using clodronate liposomes was used to repair a mouse sciatic nerve gap to evaluate its efficacy and effects. RESULT Clodronate liposomes showed specific toxicity to macrophages without affecting dorsal root ganglia (DRG)-derived neurons, endothelial cells, or Schwann cells in culture. The delivery system demonstrated sustained release of liposomes for more than 7 days while still retaining liposomes within the fibrin. In vivo, the delivery system demonstrated macrophages were targeted by liposomes, and the use of clodronate liposomes minimized macrophage accumulation within fibrin, while not affecting macrophage accumulation within DRG. Nerve regeneration across the nerve gap repaired using this delivery system was associated with decreased angiogenesis, Schwann cell accumulation, axon growth, and reinnervation of affected muscle. COMPARISON WITH EXISTING METHODS This delivery system allowed specific perturbation of macrophages locally in nerve. This method could be applicable across species without the need for genetic manipulations or systemic pharmaceuticals. CONCLUSION Liposomes embedded within fibrin gels locally target macrophages at the site of nerve injury, which enables greater precision in conclusions regarding their roles in nerve.
Collapse
Affiliation(s)
- Deng Pan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Junichi Sayanagi
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Jesús A Acevedo-Cintrón
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Lauren Schellhardt
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Alison K Snyder-Warwick
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Susan E Mackinnon
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Matthew D Wood
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA.
| |
Collapse
|
5
|
Muschter D, Beiderbeck AS, Späth T, Kirschneck C, Schröder A, Grässel S. Sensory Neuropeptides and their Receptors Participate in Mechano-Regulation of Murine Macrophages. Int J Mol Sci 2019; 20:ijms20030503. [PMID: 30682804 PMCID: PMC6386869 DOI: 10.3390/ijms20030503] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/14/2019] [Accepted: 01/21/2019] [Indexed: 12/29/2022] Open
Abstract
This study aimed to analyze if the sensory neuropeptide SP (SP) and the neurokinin receptor 1 (NK1R) are involved in macrophage mechano-transduction, similar to chondrocytes, and if alpha-calcitonin gene-related peptide (αCGRP) and the CGRP receptor (CRLR/Ramp1) show comparable activity. Murine RAW264.7 macrophages were subjected to a cyclic stretch for 1–3 days and 4 h/day. Loading and neuropeptide effects were analyzed for gene and protein expression of neuropeptides and their receptors, adhesion, apoptosis, proliferation and ROS activity. Murine bone marrow-derived macrophages (BMM) were isolated after surgical osteoarthritis (OA) induction and proliferation, apoptosis and osteoclastogenesis were analyzed in response to loading. Loading induced NK1R and CRLR/Ramp1 gene expression and altered protein expression in RAW264.7 macrophages. SP protein and mRNA level decreased after loading whereas αCGRP mRNA expression was stabilized. SP reduced adhesion in loaded RAW264.7 macrophages and both neuropeptides initially increased the ROS activity followed by a time-dependent suppression. OA induction sensitized BMM to caspase 3/7 mediated apoptosis after loading. Both sensory neuropeptides, SP and αCGRP, and their receptors are involved in murine macrophage mechano-transduction affecting neuropeptide impact on adhesion and ROS activity. OA induction altered BMM apoptosis in response to loading indicate that OA-associated biomechanical alterations might affect the macrophage population.
Collapse
Affiliation(s)
- Dominique Muschter
- Department of Orthopaedic Surgery, Experimental Orthopaedics, Centre for Medical Biotechnology, University of Regensburg, 93053 Regensburg, Germany.
| | - Anna-Sophie Beiderbeck
- Department of Orthopaedic Surgery, Experimental Orthopaedics, Centre for Medical Biotechnology, University of Regensburg, 93053 Regensburg, Germany.
| | - Tanja Späth
- Department of Orthopaedic Surgery, Experimental Orthopaedics, Centre for Medical Biotechnology, University of Regensburg, 93053 Regensburg, Germany.
| | - Christian Kirschneck
- Department of Orthodontics, University Hospital Regensburg, 93053 Regensburg, Germany.
| | - Agnes Schröder
- Department of Orthodontics, University Hospital Regensburg, 93053 Regensburg, Germany.
| | - Susanne Grässel
- Department of Orthopaedic Surgery, Experimental Orthopaedics, Centre for Medical Biotechnology, University of Regensburg, 93053 Regensburg, Germany.
| |
Collapse
|
6
|
Schett G, Bozec A, Bekeredjian-Ding I, Chang HD, David JP, Dörner T, Grässel S, Gunzer M, Manz R, Mei H, Mielenz D, Müller-Ladner U, Neumann E, Radbruch A, Richter W, Straub RH. [New insights into the function of bone marrow]. Z Rheumatol 2018; 77:4-7. [PMID: 29691692 DOI: 10.1007/s00393-018-0456-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- G Schett
- Universitätsklinikum Erlangen, Medizinische Klinik 3 - Rheumatologie und Immunologie, Friedrich-Alexander Universität Erlangen - Nürnberg, Ulmenweg 18, 91054, Erlangen, Deutschland.
| | - A Bozec
- Universitätsklinikum Erlangen, Medizinische Klinik 3 - Rheumatologie und Immunologie, Friedrich-Alexander Universität Erlangen - Nürnberg, Ulmenweg 18, 91054, Erlangen, Deutschland
| | - I Bekeredjian-Ding
- Bundesinstitut für Impfstoffe und biomedizinische Arzneimittel, Paul-Ehrlich-Institut, Paul-Ehrlich-Str. 51-59, 63225, Langen, Deutschland
| | - H-D Chang
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Leibniz Gemeinschaft, Charitéplatz 1, 10117, Berlin, Deutschland
| | - J-P David
- Institut für Osteologie und Biomechanik, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland
| | - T Dörner
- Med. Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Deutschland
| | - S Grässel
- Orthopädische Klinik, Exp. Orthopädie, Universität Regensburg, ZMB im Biopark 1, 93053, Regensburg, Deutschland
| | - M Gunzer
- Universitätsklinikum Essen, Institut für Experimentelle Immunologie und Bildgebung, Universität Duisburg-Essen, Hufelandstr. 55, 45147, Essen, Deutschland
| | - R Manz
- Institut für Systemische Entzündungsforschung, Universität Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Deutschland
| | - H Mei
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Leibniz Gemeinschaft, Charitéplatz 1, 10117, Berlin, Deutschland
| | - D Mielenz
- Molekular-Immunologische Abteilung in der Medizinischen Klinik 3, Universitätsklinikum Erlangen, Glückstr. 6, 91054, Erlangen, Deutschland
| | - U Müller-Ladner
- Abt. Rheumatologie und Klinische Immunologie, Justus-Liebig-Universität Gießen, Campus Kerckhoff, Benekestr. 2, 61231, Bad Nauheim, Deutschland
| | - E Neumann
- Abt. Rheumatologie und Klinische Immunologie, Justus-Liebig-Universität Gießen, Campus Kerckhoff, Benekestr. 2, 61231, Bad Nauheim, Deutschland
| | - A Radbruch
- Deutsches Rheuma-Forschungszentrum Berlin (DRFZ), Leibniz Gemeinschaft, Charitéplatz 1, 10117, Berlin, Deutschland
| | - W Richter
- Forschungszentrum für Experimentelle Orthopädie, Universitätsklinikum Heidelberg, Schlierbacher Landstr. 200a, 69118, Heidelberg, Deutschland
| | - R H Straub
- Labor für Exp. Rheumatologie und Neuroendokrinimmunologie, Klinik für Innere Medizin, Universitätsklinikum, 93053, Regensburg, Deutschland
| |
Collapse
|
7
|
Ozone Decreases Biomarkers of Inflamation (C-Reactive Protein and Erytrocyte Sedimentation Rate) and Improves Pain, Function and Quality of Life in Knee Osteoarthrtitis Patients: A Before-and-After Study and Review of the Literature. ACTA ACUST UNITED AC 2018. [DOI: 10.5812/mejrh.64507] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
8
|
Kim SJ, Ko WK, Jo MJ, Arai Y, Choi H, Kumar H, Han IB, Sohn S. Anti-inflammatory effect of Tauroursodeoxycholic acid in RAW 264.7 macrophages, Bone marrow-derived macrophages, BV2 microglial cells, and spinal cord injury. Sci Rep 2018; 8:3176. [PMID: 29453346 PMCID: PMC5816629 DOI: 10.1038/s41598-018-21621-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 02/07/2018] [Indexed: 12/13/2022] Open
Abstract
This study aimed to investigate the anti-inflammatory effects of tauroursodeoxycholic acid (TUDCA) after spinal cord injury (SCI) in rats. We induced an inflammatory process in RAW 264.7 macrophages, BV2 microglial cells, and bone marrow-derived macrophages (BMM) using lipopolysaccharide (LPS). The anti-inflammatory effects of TUDCA on LPS-stimulated RAW 264.7 macrophages, BV2 microglial cells, and BMMs were analyzed using nitric oxide (NO) assays, quantitative real-time polymerase chain reactions (qRT-PCR), and enzyme-linked immunosorbent assays (ELISA). The pathological changes in lesions of the spinal cord tissue were evaluated by hematoxylin & eosin (H&E) staining, luxol fast blue/cresyl violet-staining and immunofluorescent staining. TUDCA decreased the LPS-stimulated inflammatory mediator, NO. It also suppressed pro-inflammatory cytokines of tumor necrosis factor-α (TNF-α), interleukin 1-β (IL-1β), cyclooxygenase-2 (COX-2), and inducible nitric oxide synthase (iNOS) in both mRNA and protein levels. In addition, TUDCA decreased prostaglandin E2 (PGE2). After SCI, TUDCA supported the recovery of the injury site and suppressed the expression of inflammatory cytokines such as iNOS, CD68 and CD86. In addition, TUDCA induced the expression of anti-inflammatory cytokine, Arg-1. In conclusion, TUDCA inhibits inflammatory responses in RAW 264.7 macrophages, BV2 microglial cells, and BMMs. TUDCA can be a potential alternative drug for SCI.
Collapse
Affiliation(s)
- Seong Jun Kim
- Department of Neurosurgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Wan-Kyu Ko
- Department of Neurosurgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Min-Jae Jo
- Department of Neurosurgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Yoshie Arai
- Department of Biomedical Science, CHA University, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Hyemin Choi
- Department of Neurosurgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Hemant Kumar
- Department of Neurosurgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - In-Bo Han
- Department of Neurosurgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, Republic of Korea.
| | - Seil Sohn
- Department of Neurosurgery, CHA University, CHA Bundang Medical Center, Seongnam-si, Gyeonggi-do, Republic of Korea.
| |
Collapse
|
9
|
Sun AR, Panchal SK, Friis T, Sekar S, Crawford R, Brown L, Xiao Y, Prasadam I. Obesity-associated metabolic syndrome spontaneously induces infiltration of pro-inflammatory macrophage in synovium and promotes osteoarthritis. PLoS One 2017; 12:e0183693. [PMID: 28859108 PMCID: PMC5578643 DOI: 10.1371/journal.pone.0183693] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 08/09/2017] [Indexed: 02/06/2023] Open
Abstract
Objectives Epidemiological and experimental studies have established obesity to be an important risk factor for osteoarthritis (OA), however, the mechanisms underlying this link remains largely unknown. Here, we studied local inflammatory responses in metabolic-OA. Methods Wistar rats were fed with control diet (CD) and high-carbohydrate, high-fat diet (HCHF) for period of 8 and 16 weeks. After euthanasia, the knees were examined to assess the articular cartilage changes and inflammation in synovial membrane. Further IHC was conducted to determine the macrophage-polarization status of the synovium. In addition, CD and HCHF synovial fluid was co-cultured with bone marrow-derived macrophages to assess the effect of synovial fluid inflammation on macrophage polarisation. Results Our study showed that, obesity induced by a high-carbohydrate, high-fat (HCHF) diet is associated with spontaneous and local inflammation of the synovial membranes in rats even before the cartilage degradation. This was followed by increased synovitis and increased macrophage infiltration into the synovium and a predominant elevation of pro-inflammatory M1 macrophages. In addition, bone marrow derived macrophages, cultured with synovial fluid collected from the knees of obese rats exhibited a pro-inflammatory M1 macrophage phenotype. Conclusion Our study demonstrate a strong association between obesity and a dynamic immune response locally within synovial tissues. Furthermore, we have also identified synovial resident macrophages to play a vital role in the inflammation caused by the HCHF diet. Therefore, future therapeutic strategies targeted at the synovial macrophage phenotype may be the key to break the link between obesity and OA.
Collapse
Affiliation(s)
- Antonia RuJia Sun
- Institute of Health and Biomedical Innovation, School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, Australia
| | - Sunil K. Panchal
- Institute for Agriculture and the Environment and School of Health and Wellbeing, University of Southern Queensland, Toowoomba, Queensland, Australia
| | - Thor Friis
- Institute of Health and Biomedical Innovation, School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, Australia
| | - Sunderajhan Sekar
- Institute of Health and Biomedical Innovation, School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, Australia
| | - Ross Crawford
- The Prince Charles Hospital, Orthopedic Department, Brisbane, Australia
| | - Lindsay Brown
- Institute for Agriculture and the Environment and School of Health and Wellbeing, University of Southern Queensland, Toowoomba, Queensland, Australia
| | - Yin Xiao
- Institute of Health and Biomedical Innovation, School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, Australia
| | - Indira Prasadam
- Institute of Health and Biomedical Innovation, School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, Australia
- * E-mail:
| |
Collapse
|
10
|
Grässel S, Muschter D. Peripheral Nerve Fibers and Their Neurotransmitters in Osteoarthritis Pathology. Int J Mol Sci 2017; 18:ijms18050931. [PMID: 28452955 PMCID: PMC5454844 DOI: 10.3390/ijms18050931] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 04/25/2017] [Accepted: 04/26/2017] [Indexed: 12/21/2022] Open
Abstract
The importance of the nociceptive nervous system for maintaining tissue homeostasis has been known for some time, and it has also been suggested that organogenesis and tissue repair are under neuronal control. Changes in peripheral joint innervation are supposed to be partly responsible for degenerative alterations in joint tissues which contribute to development of osteoarthritis. Various resident cell types of the musculoskeletal system express receptors for sensory and sympathetic neurotransmitters, allowing response to peripheral neuronal stimuli. Among them are mesenchymal stem cells, synovial fibroblasts, bone cells and chondrocytes of different origin, which express distinct subtypes of adrenoceptors (AR), receptors for vasoactive intestinal peptide (VIP), substance P (SP) and calcitonin gene-related peptide (CGRP). Some of these cell types synthesize and secrete neuropeptides such as SP, and they are positive for tyrosine-hydroxylase (TH), the rate limiting enzyme for biosynthesis of catecholamines. Sensory and sympathetic neurotransmitters are involved in the pathology of inflammatory diseases such as rheumatoid arthritis (RA) which manifests mainly in the joints. In addition, they seem to play a role in pathogenesis of priori degenerative joint disorders such as osteoarthritis (OA). Altogether it is evident that sensory and sympathetic neurotransmitters have crucial trophic effects which are critical for joint tissue and bone homeostasis. They modulate articular cartilage, subchondral bone and synovial tissue properties in physiological and pathophysiological conditions, in addition to their classical neurological features.
Collapse
Affiliation(s)
- Susanne Grässel
- Department of Orthopedic Surgery, Exp. Orthopedics, ZMB/Biopark 1, University of Regensburg, 93053 Regensburg, Germany.
| | - Dominique Muschter
- Department of Orthopedic Surgery, Exp. Orthopedics, ZMB/Biopark 1, University of Regensburg, 93053 Regensburg, Germany.
| |
Collapse
|
11
|
Zhou H, Liu J, Zeng J, Hu B, Fang X, Li L. Inhibition of GSK-3β Alleviates Collagen II-Induced Rheumatoid Arthritis in Rats. Med Sci Monit 2016; 22:1047-52. [PMID: 27029564 PMCID: PMC4819688 DOI: 10.12659/msm.897739] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background Glycogen synthase kinase-3β (GSK-3β) inhibitor is a serine/threonine kinase with an inhibitory role in glycogen synthesis, which is essential in inflammatory and immunological diseases. The purpose of our study was to determine if TDZD-8 can alleviate collagen II-induced rheumatoid arthritis in rats. Material/Methods Twenty collagen II-induced rheumatoid arthritis rats were treated with selective GSK-3β inhibitor. The effects of GSK-3β inhibition on collagen II-induced rheumatoid arthritis in the rats were evaluated by paw edema, histological examination of arthritic synovium, radiographic examination of knee joint, and the level of inflammation mediators such as prostaglandin E2, 5-hydroxytryptamin, and histamine. The level of cytokines such as IL-6, IL-12, IL-10, and TNF-α, was examined by Elisa. Results GSK-3β inhibitor significantly reduced the development of rheumatoid arthritis in rats. The levels of inflammation mediators such as prostaglandin E2, 5-hydroxytryptamin, and histamine were decreased in the TDZD-8 group. Serum levels of IL-6, IL-12, and TNF-α were significantly reduced in the TDZD-8 group compared with the RA group. Conclusions Treatment with GSK-3β inhibitor suppressed inflammatory response in RA rats. These findings suggest that the inhibition of GSK-3β can be an effective treatment for RA.
Collapse
Affiliation(s)
- Haiyan Zhou
- Department of Clinical Research Centre, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China (mainland)
| | - Jun Liu
- Department of Immunology and Rheumatology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China (mainland)
| | - Jiashun Zeng
- Department of Immunology and Rheumatology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China (mainland)
| | - Bailong Hu
- Department of Anesthesiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China (mainland)
| | - Xiuyi Fang
- Department of Immunology and Rheumatology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China (mainland)
| | - Long Li
- Department of Immunology and Rheumatology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China (mainland)
| |
Collapse
|
12
|
Muschter D, Schäfer N, Stangl H, Straub RH, Grässel S. Sympathetic Neurotransmitters Modulate Osteoclastogenesis and Osteoclast Activity in the Context of Collagen-Induced Arthritis. PLoS One 2015; 10:e0139726. [PMID: 26431344 PMCID: PMC4592252 DOI: 10.1371/journal.pone.0139726] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 09/16/2015] [Indexed: 12/14/2022] Open
Abstract
Excessive synovial osteoclastogenesis is a hallmark of rheumatoid arthritis (RA). Concomitantly, local synovial changes comprise neuronal components of the peripheral sympathetic nervous system. Here, we wanted to analyze if collagen-induced arthritis (CIA) alters bone marrow-derived macrophage (BMM) osteoclastogenesis and osteoclast activity, and how sympathetic neurotransmitters participate in this process. Therefore, BMMs from Dark Agouti rats at different CIA stages were differentiated into osteoclasts in vitro and osteoclast number, cathepsin K activity, matrix resorption and apoptosis were analyzed in the presence of acetylcholine (ACh), noradrenaline (NA) vasoactive intestinal peptide (VIP) and assay-dependent, adenylyl cyclase activator NKH477. We observed modulation of neurotransmitter receptor mRNA expression in CIA osteoclasts without affecting protein level. CIA stage-dependently altered marker gene expression associated with osteoclast differentiation and activity without affecting osteoclast number or activity. Neurotransmitter stimulation modulated osteoclast differentiation, apoptosis and activity. VIP, NA and adenylyl cyclase activator NKH477 inhibited cathepsin K activity and osteoclastogenesis (NKH477, 10(-6) M NA) whereas ACh mostly acted pro-osteoclastogenic. We conclude that CIA alone does not affect metabolism of in vitro generated osteoclasts whereas stimulation with NA, VIP plus specific activation of adenylyl cyclase induced anti-resorptive effects probably mediated via cAMP signaling. Contrary, we suggest pro-osteoclastogenic and pro-resorptive properties of ACh mediated via muscarinic receptors.
Collapse
Affiliation(s)
- Dominique Muschter
- Department of Orthopedic Surgery, Experimental Orthopedics, University Hospital Regensburg, Regensburg, Bavaria, Germany
- Center for Medical Biotechnology, BioPark I, Regensburg, Bavaria, Germany
| | - Nicole Schäfer
- Department of Orthopedic Surgery, Experimental Orthopedics, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Hubert Stangl
- Department of Internal Medicine I, Laboratory of Experimental Rheumatology and Neuroendocrine Immunology, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Rainer H. Straub
- Department of Internal Medicine I, Laboratory of Experimental Rheumatology and Neuroendocrine Immunology, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Susanne Grässel
- Department of Orthopedic Surgery, Experimental Orthopedics, University Hospital Regensburg, Regensburg, Bavaria, Germany
- Center for Medical Biotechnology, BioPark I, Regensburg, Bavaria, Germany
- * E-mail:
| |
Collapse
|