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Dong Y, Yuan H, Ma G, Cao H. Bone-muscle crosstalk under physiological and pathological conditions. Cell Mol Life Sci 2024; 81:310. [PMID: 39066929 PMCID: PMC11335237 DOI: 10.1007/s00018-024-05331-y] [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: 02/22/2024] [Revised: 06/20/2024] [Accepted: 06/21/2024] [Indexed: 07/30/2024]
Abstract
Anatomically connected bones and muscles determine movement of the body. Forces exerted on muscles are then turned to bones to promote osteogenesis. The crosstalk between muscle and bone has been identified as mechanotransduction previously. In addition to the mechanical features, bones and muscles are also secretory organs which interact closely with one another through producing myokines and osteokines. Moreover, besides the mechanical features, other factors, such as nutrition metabolism, physiological rhythm, age, etc., also affect bone-muscle crosstalk. What's more, osteogenesis and myogenesis within motor system occur almost in parallel. Pathologically, defective muscles are always detected in bone associated diseases and induce the osteopenia, inflammation and abnormal bone metabolism, etc., through biomechanical or biochemical coupling. Hence, we summarize the study findings of bone-muscle crosstalk and propose potential strategies to improve the skeletal or muscular symptoms of certain diseases. Altogether, functional improvement of bones or muscles is beneficial to each other within motor system.
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Affiliation(s)
- Yuechao Dong
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Hongyan Yuan
- Shenzhen Key Laboratory of Soft Mechanics & Smart Manufacturing, Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Guixing Ma
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Huiling Cao
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Southern University of Science and Technology, Shenzhen, 518055, China.
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2
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Salamanna F, Faldini C, Veronesi F, Borsari V, Ruffilli A, Manzetti M, Viroli G, Traversari M, Marchese L, Fini M, Giavaresi G. A Pilot Study on Circulating, Cellular, and Tissue Biomarkers in Osteosarcopenic Patients. Int J Mol Sci 2024; 25:5879. [PMID: 38892069 PMCID: PMC11172451 DOI: 10.3390/ijms25115879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/23/2024] [Accepted: 05/25/2024] [Indexed: 06/21/2024] Open
Abstract
Aging comes with the loss of muscle and bone mass, leading to a condition known as osteosarcopenia. Circulating, cellular, and tissue biomarkers research for osteosarcopenia is relatively scarce and, currently, no established biomarkers exist. Here we find that osteosarcopenic patients exhibited elevated basophils and TNFα levels, along with decreased aPPT, PT/INR, IL15, alpha-Klotho, DHEA-S, and FGF-2 expression and distinctive bone and muscle tissue micro-architecture and biomarker expressions. They also displayed an increase in osteoclast precursors with a concomitant imbalance towards spontaneous osteoclastogenesis. Similarities were noted with osteopenic and sarcopenic patients, including a lower neutrophil percentage and altered cytokine expression. A linear discriminant analysis (LDA) on models based on selected biomarkers showed a classification accuracy in the range of 61-78%. Collectively, our data provide compelling evidence for novel biomarkers for osteosarcopenia that may hold potential as diagnostic tools to promote healthy aging.
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Affiliation(s)
- Francesca Salamanna
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (F.S.); (V.B.); (L.M.); (G.G.)
| | - Cesare Faldini
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (C.F.); (A.R.); (M.M.); (G.V.); (M.T.)
- Department of Biomedical and Neuromotor Science (DIBINEM), University of Bologna, Via Zamboni 33, 40126 Bologna, Italy
| | - Francesca Veronesi
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (F.S.); (V.B.); (L.M.); (G.G.)
| | - Veronica Borsari
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (F.S.); (V.B.); (L.M.); (G.G.)
| | - Alberto Ruffilli
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (C.F.); (A.R.); (M.M.); (G.V.); (M.T.)
- Department of Biomedical and Neuromotor Science (DIBINEM), University of Bologna, Via Zamboni 33, 40126 Bologna, Italy
| | - Marco Manzetti
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (C.F.); (A.R.); (M.M.); (G.V.); (M.T.)
- Department of Biomedical and Neuromotor Science (DIBINEM), University of Bologna, Via Zamboni 33, 40126 Bologna, Italy
| | - Giovanni Viroli
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (C.F.); (A.R.); (M.M.); (G.V.); (M.T.)
- Department of Biomedical and Neuromotor Science (DIBINEM), University of Bologna, Via Zamboni 33, 40126 Bologna, Italy
| | - Matteo Traversari
- 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (C.F.); (A.R.); (M.M.); (G.V.); (M.T.)
| | - Laura Marchese
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (F.S.); (V.B.); (L.M.); (G.G.)
| | - Milena Fini
- Scientific Direction, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy;
| | - Gianluca Giavaresi
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (F.S.); (V.B.); (L.M.); (G.G.)
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3
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Shao Z, Wang B, Gao H, Zhang S. Microenvironmental interference with intra-articular stem cell regeneration influences the onset and progression of arthritis. Front Genet 2024; 15:1380696. [PMID: 38841721 PMCID: PMC11150611 DOI: 10.3389/fgene.2024.1380696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 04/30/2024] [Indexed: 06/07/2024] Open
Abstract
Studies have indicated that the preservation of joint health and the facilitation of damage recovery are predominantly contingent upon the joint's microenvironment, including cell-cell interactions, the extracellular matrix's composition, and the existence of local growth factors. Mesenchymal stem cells (MSCs), which possess the capacity to self-renew and specialize in many directions, respond to cues from the microenvironment, and aid in the regeneration of bone and cartilage, are crucial to this process. Changes in the microenvironment (such as an increase in inflammatory mediators or the breakdown of the extracellular matrix) in the pathological context of arthritis might interfere with stem cell activation and reduce their ability to regenerate. This paper investigates the potential role of joint microenvironmental variables in promoting or inhibiting the development of arthritis by influencing stem cells' ability to regenerate. The present status of research on stem cell activity in the joint microenvironment is also outlined, and potential directions for developing new treatments for arthritis that make use of these intervention techniques to boost stem cell regenerative potential through altering the intra-articular environment are also investigated. This review's objectives are to investigate these processes, offer fresh perspectives, and offer a solid scientific foundation for the creation of arthritic treatment plans in the future.
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Affiliation(s)
| | | | | | - Shenqi Zhang
- Department of Joint and Sports Medicine, Zaozhuang Municipal Hospital Affiliated to Jining Medical University, Zaozhuang, Shandong, China
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Zhang Q, Wang J, Zhang J, Liu F. Potential functions and therapeutic implications of glioma-resident mesenchymal stem cells. Cell Biol Toxicol 2023; 39:853-866. [PMID: 37138122 DOI: 10.1007/s10565-023-09808-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 04/27/2023] [Indexed: 05/05/2023]
Abstract
Mesenchymal stem cells (MSCs) are emerging crucial regulators in the tumor microenvironment (TME), which contributes to tumor progression and therapeutic resistance. MSCs are considered to be the stromal components of several tumors, their ultimate contribution to tumorigenesis and their potential to drive tumor stem cells, especially in the unique microenvironment of gliomas. Glioma-resident MSCs (GR-MSCs) are non-tumorigenic stromal cells. The phenotype of GR-MSCs is similar to that of prototype bone marrow-MSCs and GR-MSCs enhance the GSCs tumorigenicity via the IL-6/gp130/STAT3 pathway. The higher percentage of GR-MSCs in TME results in the poor prognosis of glioma patients and illuminate the tumor-promoting roles for GR-MSCs by secreting specific miRNA. Furthermore, the GR-MSC subpopulations associated with CD90 expression determine their different functions in glioma progression and CD90low MSCs generate therapeutic resistance by increasing IL-6-mediated FOXS1 expression. Therefore, it is urgent to develop novel therapeutic strategies targeting GR-MSCs for GBM patients. Despite that several functions of GR-MSCs have been confirmed, their immunologic landscapes and deeper mechanisms associated with the functions are not still expounded. In this review, we summarize the progress and potential function of GR-MSCs, as well as highlight their therapeutic implications based on GR-MSCs in GBM patients.
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Affiliation(s)
- Qing Zhang
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- Beijing Laboratory of Biomedical Materials, Beijing, China
- Department of Neurosurgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Jialin Wang
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- Beijing Laboratory of Biomedical Materials, Beijing, China
| | - Junwen Zhang
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
- Beijing Laboratory of Biomedical Materials, Beijing, China
| | - Fusheng Liu
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
- Beijing Laboratory of Biomedical Materials, Beijing, China.
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Bonanni R, Gino Grillo S, Cariati I, Tranquillo L, Iundusi R, Gasbarra E, Tancredi V, Tarantino U. Osteosarcopenia and Pain: Do We Have a Way Out? Biomedicines 2023; 11:biomedicines11051285. [PMID: 37238956 DOI: 10.3390/biomedicines11051285] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/21/2023] [Accepted: 04/23/2023] [Indexed: 05/28/2023] Open
Abstract
Osteosarcopenia (OSP) is a geriatric syndrome characterized by the coexistence of osteoporosis and sarcopenia and associated with an increased risk of fragility fractures, disability, and mortality. For patients with this syndrome, musculoskeletal pain represents the most significant challenge since, in addition to limiting the individual's functionality and promoting disability, it has a huge psychological burden involving anxiety, depression, and social withdrawal. Unfortunately, the molecular mechanisms involved in the development and persistence of pain in OSP have not yet been fully elucidated, although immune cells are known to play a key role in these processes. Indeed, they release several molecules that promote persistent inflammation and nociceptive stimulation, resulting in the gating of ion channels responsible for the generation and propagation of the noxious stimulus. The adoption of countermeasures to counteract the OSP progression and reduce the algic component appears to be necessary, providing patients with a better quality of life and greater adherence to treatment. In addition, the development of multimodal therapies, based on an interdisciplinary approach, appears to be crucial, combining the use of anti-osteoporotic drugs with an educational programme, regular physical activity, and proper nutrition to eliminate risk factors. Based on this evidence, we conducted a narrative review using the PubMed and Google Scholar search engines to summarize the current knowledge on the molecular mechanisms involved in the pain development in OSP and the potential countermeasures to be taken. The lack of studies addressing this topic highlights the need to conduct new research into the resolution of an ever-expanding social problem.
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Affiliation(s)
- Roberto Bonanni
- Department of Clinical Sciences and Translational Medicine, "Tor Vergata" University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Sonia Gino Grillo
- Department of Orthopaedics and Traumatology, "Policlinico Tor Vergata" Foundation, Viale Oxford 81, 00133 Rome, Italy
| | - Ida Cariati
- Department of Clinical Sciences and Translational Medicine, "Tor Vergata" University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Lucia Tranquillo
- Department of Orthopaedics and Traumatology, "Policlinico Tor Vergata" Foundation, Viale Oxford 81, 00133 Rome, Italy
| | - Riccardo Iundusi
- Department of Orthopaedics and Traumatology, "Policlinico Tor Vergata" Foundation, Viale Oxford 81, 00133 Rome, Italy
| | - Elena Gasbarra
- Department of Orthopaedics and Traumatology, "Policlinico Tor Vergata" Foundation, Viale Oxford 81, 00133 Rome, Italy
| | - Virginia Tancredi
- Department of Systems Medicine, "Tor Vergata" University of Rome, Via Montpellier 1, 00133 Rome, Italy
- Centre of Space Bio-Medicine, "Tor Vergata" University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Umberto Tarantino
- Department of Clinical Sciences and Translational Medicine, "Tor Vergata" University of Rome, Via Montpellier 1, 00133 Rome, Italy
- Department of Orthopaedics and Traumatology, "Policlinico Tor Vergata" Foundation, Viale Oxford 81, 00133 Rome, Italy
- Centre of Space Bio-Medicine, "Tor Vergata" University of Rome, Via Montpellier 1, 00133 Rome, Italy
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Abstract
Bone marrow contains resident cellular components that are not only involved in bone maintenance but also regulate hematopoiesis and immune responses. The immune system and bone interact with each other, coined osteoimmunology. Hashimoto's thyroiditis (HT) is one of the most common chronic autoimmune diseases which is accompanied by lymphocytic infiltration. It shows elevating thyroid autoantibody levels at an early stage and progresses to thyroid dysfunction ultimately. Different effects exert on bone metabolism during different phases of HT. In this review, we summarized the mechanisms of the long-term effects of HT on bone and the relationship between thyroid autoimmunity and osteoimmunology. For patients with HT, the bone is affected not only by thyroid function and the value of TSH, but also by the setting of the autoimmune background. The autoimmune background implies a breakdown of the mechanisms that control self-reactive system, featuring abnormal immune activation and presence of autoantibodies. The etiology of thyroid autoimmunity and osteoimmunology is complex and involves a number of immune cells, cytokines and chemokines, which regulate the pathogenesis of HT and osteoporosis at the same time, and have potential to affect each other. In addition, vitamin D works as a potent immunomodulator to influence both thyroid immunity and osteoimmunology. We conclude that HT affects bone metabolism at least through endocrine and immune pathways.
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Affiliation(s)
- Jialu Wu
- Laboratory of Endocrinology and Metabolism/Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, 37 Guoxue Lane, 610041, Chengdu, P.R. China
| | - Hui Huang
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, 37 Guoxue Lane, 610041, Chengdu, P.R. China
| | - Xijie Yu
- Laboratory of Endocrinology and Metabolism/Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, 37 Guoxue Lane, 610041, Chengdu, P.R. China.
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Nie H, Wang F, Zeng X, Bao H, Liu X. Analysis of Communal Molecular Mechanism Between Chronic Obstructive Pulmonary Disease and Osteoporosis. Int J Chron Obstruct Pulmon Dis 2023; 18:259-271. [PMID: 36937804 PMCID: PMC10017835 DOI: 10.2147/copd.s395492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) patients with osteoporosis (OP) usually experience more frequent exacerbations, worse quality of life, and heavier economic burden, however, few studies have investigated common molecular mechanisms of COPD and OP. Objective To explore the relationship between COPD and OP through bioinformatics analysis. Methods The miRNA microarray data of COPD and OP were retrieved from the Gene Expression Database (GEO), and the differentially expressed microRNAs (DEmiRNAs) were screened and the intersection was obtained. The Targetscan, miRDB, and miRWalk databases were used to predict the target genes of DEmiRNA, and the gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were performed using the R package clusterProfiler, the STRING database was used to analyze the target protein-protein interaction network (PPI) and screens to determine the core modules and core genes. Results Two DEmiRNAs (miR-23a-5p, miR-194-3p) have been found in COPD and OP, which have predicted 76 and 114 target genes, respectively. GO functional annotations of miR-23a-5p were significantly enriched in CD40 signaling pathway, ubiquitin-conjugating enzyme activity, etc; KEGG pathways of miR-23a-5p were significantly enriched in ubiquitin-mediated proteolysis, folate biosynthesis, and regulation of actin cytoskeleton. GO function annotations of miR-194-3p were significantly enriched in T cell activation regulation, ubiquitin protein ligase activity, and DNA transcription factor binding; KEGG pathways of miR-194-3p were significantly enriched in cell adhesion molecules, intercellular tight junctions, and lysosomal pathway. PPI analysis found target coding proteins formed complex regulatory networks. Ten core genes (TP53, SRC, PXN, CHD4, SYK, TNRC6B, PML, KAT5, BRD1 and IGF2) were picked out among them, then we used the MCODE plugin found three core subnetworks. Conclusion Two identical DEmiRNAs (miR-23a-5p, miR-194-3p) exist in the peripheral blood of COPD and OP patients, which are important biomarkers for COPD patients with OP and may represent novel targets for diagnosis and treatment of COPD patients with OP.
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Affiliation(s)
- Hui Nie
- The First Clinical Medical College of Lanzhou University, Lanzhou, People’s Republic of China
- Department of Gerontal Respiratory Medicine, the First Hospital of Lanzhou University, Lanzhou, People’s Republic of China
| | - Fei Wang
- The First Clinical Medical College of Lanzhou University, Lanzhou, People’s Republic of China
| | - Xiaoli Zeng
- Department of Gerontal Respiratory Medicine, the First Hospital of Lanzhou University, Lanzhou, People’s Republic of China
| | - Hairong Bao
- Department of Gerontal Respiratory Medicine, the First Hospital of Lanzhou University, Lanzhou, People’s Republic of China
| | - Xiaoju Liu
- Department of Gerontal Respiratory Medicine, the First Hospital of Lanzhou University, Lanzhou, People’s Republic of China
- Correspondence: Xiaoju Liu, Department of Gerontal Respiratory Medicine, the First Hospital of Lanzhou University, No. 1 West Donggang Road, Lanzhou, 730000, People’s Republic of China, Email
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Mohammed Majid ALQ, Wefak Jbori ALB, Hepa A. AA. The effect of Hyperhomocysteinemia on the Osteoclasts activity in Male New Zealand White Rabbits. RESEARCH JOURNAL OF PHARMACY AND TECHNOLOGY 2022:5443-5448. [DOI: 10.52711/0974-360x.2022.00917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Methionine is a specific amino acid which contains sulfur, and can be used to make proteins, found in fish, meat, and dairy products, the excess intake of L-methionine lead to elevated homocysteine (Hcy) level that known as Hyperhomocysteinemia (HHcy). Increased Hcy plasma may represent an independent risk factor for osteoporotic fractures, and therefore may also negatively affect bone metabolism. This study was designed to examine the impact of Hcy on osteoclast activity in Male Rabbits, following methionine overload. To achieve this study's aims, we recruiting (20) males of New Zealand white rabbits that were divided into (10/group) control group and a group treated with methionine. Then after the intubation of methionine overload, we measured the "Receptor Activator of Nuclear factor Kappa-b" (RANK) and "Receptor Activator of Nuclear factor Kappa-b ligand" (RANK-L) levels in the blood, in addition to histological examination of the trabecular structure of femur bone. The results show a significant (p≤0.001) increase in serum RANK and RANK-L levels of methionine treated group in comparison with the control group. The histological examination of the trabecular structure of femur bone shows an increase in osteoclasts percentage, activity, and large resorption pits in the methionine treated group. The HHcy that was induced by methionine overload, caused an increase in osteoclast activity and numbers in male rabbits suggested a mechanistic role for bone resorption by Hcy. Future research clarifying the mechanistic function of elevated concentrations of Hcy in osteoporosis may have important therapeutic implications.
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Affiliation(s)
| | - AL-Bazi Wefak Jbori
- Department of Physiology, College of Veterinary Medicine, University of Kerbala, Iraq
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Impact of phosphorylation of heat shock protein 27 on the expression profile of periodontal ligament fibroblasts during mechanical strain. J Orofac Orthop 2022; 84:143-153. [PMID: 35445818 PMCID: PMC10126016 DOI: 10.1007/s00056-022-00391-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/04/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Orthodontic tooth movement is a complex process involving the remodeling of extracellular matrix and bone as well as inflammatory processes. During orthodontic treatment, sterile inflammation and mechanical loading favor the production of receptor activator of NF-κB ligand (RANKL). Simultaneously, expression of osteoprotegerin (OPG) is inhibited. This stimulates bone resorption on the pressure side. Recently, heat shock protein 27 (HSP27) was shown to be expressed in the periodontal ligament after force application and to interfere with inflammatory processes. METHODS We investigated the effects of phosphorylated HSP27 on collagen synthesis (COL1A2 mRNA), inflammation (IL1B mRNA, IL6 mRNA, PTGS2 protein) and bone remodeling (RANKL protein, OPG protein) in human periodontal ligament fibroblasts (PDLF) without and with transfection of a plasmid mimicking permanent phosphorylation of HSP27 using real-time quantitative polymerase chain reaction (RT-qPCR), western blot and enzyme-linked immunosorbent assays (ELISAs). Furthermore, we investigated PDLF-induced osteoclastogenesis after compressive strain in a co-culture model with human macrophages. RESULTS In particular, phosphorylated HSP27 increased gene expression of COL1A2 and protein expression of PTGS2, while IL6 mRNA levels were reduced. Furthermore, we observed an increasing effect on the RANKL/OPG ratio and osteoclastogenesis mediated by PDLF. CONCLUSION Phosphorylation of HSP27 may therefore be involved in the regulation of orthodontic tooth movement by impairment of the sterile inflammation response and osteoclastogenesis.
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Maestro-Paramio L, García-Rey E, Bensiamar F, Saldaña L. Osteoblast function in patients with idiopathic osteonecrosis of the femoral head : implications for a possible novel therapy. Bone Joint Res 2021; 10:619-628. [PMID: 34569806 PMCID: PMC8479568 DOI: 10.1302/2046-3758.109.bjr-2021-0016.r1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aims To investigate whether idiopathic osteonecrosis of the femoral head (ONFH) is related to impaired osteoblast activities. Methods We cultured osteoblasts isolated from trabecular bone explants taken from the femoral head and the intertrochanteric region of patients with idiopathic ONFH, or from the intertrochanteric region of patients with osteoarthritis (OA), and compared their viability, mineralization capacity, and secretion of paracrine factors. Results Osteoblasts from the intertrochanteric region of patients with ONFH showed lower alkaline phosphatase (ALP) activity and mineralization capacity than osteoblasts from the same skeletal site in age-matched patients with OA, as well as lower messenger RNA (mRNA) levels of genes encoding osteocalcin and bone sialoprotein and higher osteopontin expression. In addition, osteoblasts from patients with ONFH secreted lower osteoprotegerin (OPG) levels than those from patients with OA, resulting in a higher receptor activator of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) ligand (RANKL)-to-OPG ratio. In patients with ONFH, osteoblasts from the femoral head showed reduced viability and mineralized nodule formation compared with osteoblasts from the intertrochanteric region. Notably, the secretion of the pro-resorptive factors interleukin-6 and prostaglandin E2 as well as the RANKL-to-OPG ratio were markedly higher in osteoblast cultures from the femoral head than in those from the intertrochanteric region. Conclusion Idiopathic ONFH is associated with a reduced mineralization capacity of osteoblasts and increased secretion of pro-resorptive factors. Cite this article: Bone Joint Res 2021;10(9):619–628.
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Affiliation(s)
| | - Eduardo García-Rey
- Departamento de Cirugía Ortopédica y Traumatología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain.,Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, Spain
| | - Fátima Bensiamar
- Hospital Universitario La Paz-IdiPAZ, Madrid, Spain.,Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, Spain
| | - Laura Saldaña
- Hospital Universitario La Paz-IdiPAZ, Madrid, Spain.,Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, Spain
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11
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Bjørklund G, Dadar M, Doşa MD, Chirumbolo S, Pen JJ. Insights into the Effects of Dietary Omega-6/Omega-3 Polyunsaturated Fatty Acid (PUFA) Ratio on Oxidative Metabolic Pathways of Oncological Bone Disease and Global Health. Curr Med Chem 2021; 28:1672-1682. [PMID: 32338204 DOI: 10.2174/0929867327666200427095331] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 03/14/2020] [Accepted: 03/20/2020] [Indexed: 11/22/2022]
Abstract
Various nutrients have been designated as antioxidants, with a possible effect on diseases like cancer. This is partly due to their effect on prostaglandins, thereby affecting local pathological metabolic acidosis. This paper aims to summarize the culprit pathophysiological mechanisms involved, with a focus on the bone microenvironment. The omega- 6/omega-3 PUFA ratio is particularly investigated for its antioxidative effects, countering these pathways to fight the disease. This feature is looked at concerning its impact on health in general, with a particular focus on malignant bone metastasis.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine (CONEM), Mo i Rana, Norway
| | - Maryam Dadar
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Monica Daniela Doşa
- Department of Pharmacology, Faculty of Medicine, Ovidius University, Constanta, Romania
| | - Salvatore Chirumbolo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Joeri J Pen
- Diabetes Clinic, Department of Internal Medicine, UZ Brussel, Vrije Universiteit Brussel (VUB), Brussels, Belgium
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Puzio I, Graboś D, Bieńko M, Radzki RP, Nowakiewicz A, Kosior-Korzecka U. Camelina Oil Supplementation Improves Bone Parameters in Ovariectomized Rats. ANIMALS : AN OPEN ACCESS JOURNAL FROM MDPI 2021; 11:ani11051343. [PMID: 34065038 PMCID: PMC8150831 DOI: 10.3390/ani11051343] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/28/2021] [Accepted: 05/03/2021] [Indexed: 02/07/2023]
Abstract
The aim of the present study was to determine the effect of administration of Camelina sativa oil (CO) as a source of polyunsaturated fatty acids (PUFA) on bone parameters in ovariectomized rats (OVX). Overall, 40 10-week-old healthy female Wistar rats were divided into 4 groups with 10 animals in each. Rats in the control group (SHO) were subjected to a sham operation, whereas experimental rats (OVX) were ovariectomized. After a 7-day recovery period, the SHO the rats received orally 1 mL of physiological saline for the next 6 weeks. The OVX rats received orally 1 mL of physiological saline (OVX-PhS), 5 g/kg BW (OVX-CO5), or 9 g/kg BW (OVX-CO9) of camelina oil. The use of camelina oil had a significant effect on body weight, lean mass, and fat mass. The camelina oil administration suppressed the decrease in the values of some densitometric, tomographic, and mechanical parameters of femur caused by estrogen deficiency. The CO treatment increased significantly the serum level of osteocalcin and decreased the serum level of C-terminal telopeptide of type I collagen in the OVX rats. In conclusion, camelina oil exerts a positive osteotropic effect by inhibiting ovariectomy-induced adverse changes in bones. Camelina oil supplementation can be used as an efficient method for improving bone health in a disturbed state. However, further research must be carried out on other animal species supplemented with the oil.
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Affiliation(s)
- Iwona Puzio
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (D.G.); (M.B.); (R.P.R.)
- Correspondence:
| | - Dorota Graboś
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (D.G.); (M.B.); (R.P.R.)
| | - Marek Bieńko
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (D.G.); (M.B.); (R.P.R.)
| | - Radosław P. Radzki
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (D.G.); (M.B.); (R.P.R.)
| | - Aneta Nowakiewicz
- Department of Preclinical Veterinary Sciences, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (A.N.); (U.K.-K.)
| | - Urszula Kosior-Korzecka
- Department of Preclinical Veterinary Sciences, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (A.N.); (U.K.-K.)
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Hu W, Chen Y, Dou C, Dong S. Microenvironment in subchondral bone: predominant regulator for the treatment of osteoarthritis. Ann Rheum Dis 2021; 80:413-422. [PMID: 33158879 PMCID: PMC7958096 DOI: 10.1136/annrheumdis-2020-218089] [Citation(s) in RCA: 171] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 10/21/2020] [Accepted: 10/22/2020] [Indexed: 12/11/2022]
Abstract
Osteoarthritis (OA) is a degenerative joint disease in the elderly. Although OA has been considered as primarily a disease of the articular cartilage, the participation of subchondral bone in the pathogenesis of OA has attracted increasing attention. This review summarises the microstructural and histopathological changes in subchondral bone during OA progression that are due, at the cellular level, to changes in the interactions among osteocytes, osteoblasts, osteoclasts (OCs), endothelial cells and sensory neurons. Therefore, we focus on how pathological cellular interactions in the subchondral bone microenvironment promote subchondral bone destruction at different stages of OA progression. In addition, the limited amount of research on the communication between OCs in subchondral bone and chondrocytes (CCs) in articular cartilage during OA progression is reviewed. We propose the concept of 'OC-CC crosstalk' and describe the various pathways by which the two cell types might interact. Based on the 'OC-CC crosstalk', we elaborate potential therapeutic strategies for the treatment of OA, including restoring abnormal subchondral bone remodelling and blocking the bridge-subchondral type H vessels. Finally, the review summarises the current understanding of how the subchondral bone microenvironment is related to OA pain and describes potential interventions to reduce OA pain by targeting the subchondral bone microenvironment.
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Affiliation(s)
- Wenhui Hu
- Department of Biomedical Materials Science, Third Military Medical University, Chongqing, China
| | - Yueqi Chen
- Department of Biomedical Materials Science, Third Military Medical University, Chongqing, China
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Ce Dou
- Department of Biomedical Materials Science, Third Military Medical University, Chongqing, China
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Shiwu Dong
- Department of Biomedical Materials Science, Third Military Medical University, Chongqing, China
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, China
- State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China
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14
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The Pathophysiology of Osteoporosis after Spinal Cord Injury. Int J Mol Sci 2021; 22:ijms22063057. [PMID: 33802713 PMCID: PMC8002377 DOI: 10.3390/ijms22063057] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/15/2021] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
Spinal cord injury (SCI) affects approximately 300,000 people in the United States. Most individuals who sustain severe SCI also develop subsequent osteoporosis. However, beyond immobilization-related lack of long bone loading, multiple mechanisms of SCI-related bone density loss are incompletely understood. Recent findings suggest neuronal impairment and disability may lead to an upregulation of receptor activator of nuclear factor-κB ligand (RANKL), which promotes bone resorption. Disruption of Wnt signaling and dysregulation of RANKL may also contribute to the pathogenesis of SCI-related osteoporosis. Estrogenic effects may protect bones from resorption by decreasing the upregulation of RANKL. This review will discuss the current proposed physiological and cellular mechanisms explaining osteoporosis associated with SCI. In addition, we will discuss emerging pharmacological and physiological treatment strategies, including the promising effects of estrogen on cellular protection.
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Ullrich N, Schröder A, Bauer M, Spanier G, Jantsch J, Deschner J, Proff P, Kirschneck C. The role of HIF-1α in nicotine-induced root and bone resorption during orthodontic tooth movement. Eur J Orthod 2020; 43:516-526. [PMID: 33043973 DOI: 10.1093/ejo/cjaa057] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND In orthodontic tooth movement (OTM), pseudo-inflammatory processes occur that are similar to those of nicotine-induced periodontitis. Previous studies have shown that nicotine accelerates OTM, but induces periodontal bone loss and dental root resorption via synergistically increased osteoclastogenesis. This study aimed to investigate the role of hypoxia-inducible factor 1 alpha (HIF-1α) in nicotine-induced osteoclastogenesis during OTM. MATERIALS/METHODS Male Fischer-344 rats were treated with l-Nicotine (1.89 mg/kg/day s.c., N = 10) or NaCl solution (N = 10). After a week of premedication, a NiTi spring was inserted to mesialize the first upper left molar. The extent of dental root resorption, osteoclastogenesis, and HIF-1α protein expression was determined by (immuno)histology, as well as bone volume (BV/TV) and trabecular thickness (TbTh) using µCT. Receptor activator of nuclear factor of activated B-cells ligand (RANK-L), osteoprotegerin (OPG), and HIF-1α expression were examined at the protein level in periodontal ligament fibroblasts (PDLF) exposed to pressure, nicotine and/or hypoxia, as well as PDLF-induced osteoclastogenesis in co-culture experiments with osteoclast progenitor cells. RESULTS Nicotine favoured dental root resorptions and osteoclastogenesis during OTM, while BV/TV and TbTh were only influenced by force. This nicotine-induced increase does not appear to be mediated by HIF-1α, since HIF-1α was stabilized by force application and hypoxia, but not by nicotine. The in vitro data showed that the hypoxia-induced increase in RANK-L/OPG expression ratio and PDLF-mediated osteoclastogenesis was less pronounced than the nicotine-induced increase. CONCLUSIONS Study results indicate that the nicotine-induced increase in osteoclastogenesis and periodontal bone resorption during OTM may not be mediated by hypoxic effects or HIF-1α stabilization in the context of nicotine-induced vasoconstriction, but rather by an alternative mechanism.
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Affiliation(s)
- Niklas Ullrich
- Department of Orthodontics, University Medical Centre of Regensburg, Germany
| | - Agnes Schröder
- Department of Orthodontics, University Medical Centre of Regensburg, Germany
| | - Maria Bauer
- Department of Orthodontics, University Medical Centre of Regensburg, Germany
| | - Gerrit Spanier
- Department of Oral and Maxillofacial Surgery, University Medical Centre of Regensburg, Germany
| | - Jonathan Jantsch
- Department of Medical Microbiology and Hygiene, University Medical Centre of Regensburg, Germany
| | - James Deschner
- Department of Periodontology and Operative Dentistry, University Medicine Mainz, Germany
| | - Peter Proff
- Department of Orthodontics, University Medical Centre of Regensburg, Germany
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16
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Bao M, Zhang K, Wei Y, Hua W, Gao Y, Li X, Ye L. Therapeutic potentials and modulatory mechanisms of fatty acids in bone. Cell Prolif 2020; 53:e12735. [PMID: 31797479 PMCID: PMC7046483 DOI: 10.1111/cpr.12735] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 11/02/2019] [Accepted: 11/05/2019] [Indexed: 02/05/2023] Open
Abstract
Bone metabolism is a lifelong process that includes bone formation and resorption. Osteoblasts and osteoclasts are the predominant cell types associated with bone metabolism, which is facilitated by other cells such as bone marrow mesenchymal stem cells (BMMSCs), osteocytes and chondrocytes. As an important component in our daily diet, fatty acids are mainly categorized as long-chain fatty acids including polyunsaturated fatty acids (LCPUFAs), monounsaturated fatty acids (LCMUFAs), saturated fatty acids (LCSFAs), medium-/short-chain fatty acids (MCFAs/SCFAs) as well as their metabolites. Fatty acids are closely associated with bone metabolism and associated bone disorders. In this review, we summarized the important roles and potential therapeutic implications of fatty acids in multiple bone disorders, reviewed the diverse range of critical effects displayed by fatty acids on bone metabolism, and elucidated their modulatory roles and mechanisms on specific bone cell types. The evidence supporting close implications of fatty acids in bone metabolism and disorders suggests fatty acids as potential therapeutic and nutritional agents for the treatment and prevention of metabolic bone diseases.
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Affiliation(s)
- Minyue Bao
- State Key Laboratory of Oral DiseasesNational Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Kaiwen Zhang
- State Key Laboratory of Oral DiseasesNational Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Yangyini Wei
- State Key Laboratory of Oral DiseasesNational Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Weihan Hua
- State Key Laboratory of Oral DiseasesNational Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Yanzi Gao
- State Key Laboratory of Oral DiseasesNational Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Xin Li
- State Key Laboratory of Oral DiseasesNational Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Ling Ye
- State Key Laboratory of Oral DiseasesNational Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
- State Key Laboratory of Oral DiseasesNational Clinical Research Center for Oral DiseasesDepartment of Cariology and EndodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
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Zhan Q, Tian Y, Han L, Wang K, Wang J, Xue C. The opposite effects of Antarctic krill oil and arachidonic acid-rich oil on bone resorption in ovariectomized mice. Food Funct 2020; 11:7048-7060. [DOI: 10.1039/d0fo00884b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The opposite effects and mechanism of AKO and AAO in the regulation of bone resorption in postmenopausal osteoporosis were systematically investigated to support the recommendations on fatty acid types in dietary oils for people with osteoporosis.
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Affiliation(s)
- Qiping Zhan
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
- College of Food Science and Engineering
| | - Yingying Tian
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
- Marine Biomedical Research Institute of Qingdao
| | - Lihua Han
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
| | - Kai Wang
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
| | - Jingfeng Wang
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
| | - Changhu Xue
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
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18
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Benjakul S, Leethanakul C, Jitpukdeebodintra S. Low magnitude high frequency vibration induces RANKL via cyclooxygenase pathway in human periodontal ligament cells in vitro. J Oral Biol Craniofac Res 2019; 9:251-255. [PMID: 31211043 DOI: 10.1016/j.jobcr.2019.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 06/02/2019] [Indexed: 01/12/2023] Open
Abstract
Objective This study aimed to examine the effects of PGE2 on RANKL expression in response to vibration and vibration in combination with compressive stress and characterise this transduction pathway in periodontal ligament (PDL) cells. Methods Cultured human PDL cells obtained from extracted premolar teeth (from six individuals) were subjected to three cycles of vibration (0.3 g, 30 Hz for 20 min every 24 h; V), compressive stress (1.5 g/cm2, 48 h; C) or vibration in combination with compressive stress (VC). To investigate whether the expression of RANKL and PGE2 was COX-dependent, PDL cells were treated with indomethacin prior to the onset of mechanical stimulation. RANKL and OPG expressions were examined by quantitative real-time polymerase chain reaction (qPCR). Quantification of PGE2, soluble RANKL (sRANKL) and OPG productions were measured using enzyme-linked immunosorbent assay (ELISAs). Results All mechanical stresses (V, C and VC) significantly increased PGE2 and RANKL. OPG was not affected by vibration, but was downregulated in compressed cells (C and VC). Indomethacin abolished induction of RANKL and downregulated OPG in response to all mechanical stresses. Conclusion These results suggest that vibration, compressive stress and vibration in combination with compressive stress induce RANKL expression in human PDL cells by activating the cyclooxygenase pathway.
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Affiliation(s)
- Sutiwa Benjakul
- Orthodontic Section, Faculty of Dentistry, Thammasat University, Thailand
| | - Chidchanok Leethanakul
- Orthodontic Section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Thailand
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19
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Sultana S, Dey R, Bishayi B. Role of plasminogen activator inhibitor – 1 (PAI-1) in regulating the pathogenesis of S. aureus arthritis via plasminogen pathway. Immunol Lett 2019; 209:53-66. [DOI: 10.1016/j.imlet.2019.03.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 03/13/2019] [Accepted: 03/23/2019] [Indexed: 01/31/2023]
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20
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Ren J, Chakrabarti S, Wu J. Phosvitin and its hydrolysate promote differentiation and inhibit TNF-ɑ induced inflammation in MC3T3-E1 cells via ERK and AKT pathways. J Funct Foods 2019. [DOI: 10.1016/j.jff.2018.12.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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21
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Abstract
The relationships between both dietary and empty body fatty acid composition and the morphometry, densitometry, geometry and biomechanical properties of the femur of growing pigs were analysed. A total of thirty-two pigs aged 115 d were divided into four groups (n 8 per group). The pigs were fed either a control diet (group C) or a diet supplemented with linseed oil (rich in α-linolenic acid (C18 : 3n-3), group L), fish oil (rich in EPA (C20 : 5n-3) and DHA (C22 : 6n-3), group F) and beef tallow (rich in SFA, group T). The diets differed in n-3 PUFA contents (0·63-18·52 g/kg) and n-6:n-3 PUFA ratios (0·91-14·51). At 165 d of age, the pigs were slaughtered and the fatty acids in the empty body were determined. Moreover, the left femur was dissected. The cortical wall thickness, cross-sectional area, cortical index, bone mineral content, bone mineral density, maximum elastic strength and maximum strength were lower (P<0·05) in the femurs of pigs from groups C and T than in those from groups F and L. Significant positive correlations were found between the densitometry, geometry and biomechanical properties of the femur and both dietary and empty body n-3 PUFA content, whereas significant negative correlations were observed between the same properties and both dietary and empty body n-6:n-3 PUFA ratio. The results of the present study suggest that in growing pigs α-linolenic acid has a similar positive effect on bone health to that of EPA and DHA.
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22
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Sooksong S, Pirarat N, Angkanaporn K. Omega-3 fatty acids and meloxicam supplementation and the incidence and histopathological changes associated with femoral head syndrome in broilers. ANIMAL PRODUCTION SCIENCE 2019. [DOI: 10.1071/an17713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Femoral head separation (FHS) is one of the problems commonly found in fast growing-type broilers that resulted in joint inflammation leading to lameness and poor animal welfare. This study aimed to examine the alimentary effects of omega-3 fatty acids (DHA) and meloxicam on the incidence of FHS in relation with changes in pathological features and serum concentrations of TNFα and IL1β in broilers. A total number of 1152 male day-old Cobb 500 broilers were divided into four groups. The chicks in T1 (Control) received the basal diet. Chicks in T2 to T4 were given burden of a modified speed bump, in which the chicks in T2 received the basal diet, and the chicks in T3 and T4 received 2% All-G-Rich (16% DHA) in the basal diet and meloxicam in drinking water (0.5 mg/kg BW) during Days 22–43 of age, respectively. It was demonstrated that the incidence of FHS in T4 was the smallest (P < 0.05) among groups although the incidence of FHS was not increased by modified speed bump itself. Although BW (and average daily gain) in T3 was the smallest, but the incidence of FHS was not decreased. An osteochondrosis cleft during histopathological examination could be detected even in the normal gross lesions. Serum concentrations in TNFα and IL1β were not different among groups. In conclusion, meloxicam as an anti-inflammatory drug was useful to alleviate the gross pathological changes of FHS whereas DHA was not effective at the used dosage. Studies on histopathological changes at the beginning of FHS lesion are necessary.
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23
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Irwandi RA, Khonsuphap P, Limlawan P, Vacharaksa A. miR‐302a‐3p regulates RANKL expression in human mandibular osteoblast‐like cells. J Cell Biochem 2018; 119:4372-4381. [DOI: 10.1002/jcb.26456] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 10/18/2017] [Indexed: 01/25/2023]
Affiliation(s)
- Rizky A. Irwandi
- Research Unit on Oral Microbiology and ImmunologyFaculty of DentistryChulalongkorn UniversityBangkokThailand
- Department of MicrobiologyFaculty of DentistryChulalongkorn UniversityBangkokThailand
| | - Pakchisa Khonsuphap
- Research Unit on Oral Microbiology and ImmunologyFaculty of DentistryChulalongkorn UniversityBangkokThailand
- Department of MicrobiologyFaculty of DentistryChulalongkorn UniversityBangkokThailand
- Research Unit of Mineralized TissueFaculty of DentistryChulalongkorn UniversityBangkokThailand
| | - Pirawish Limlawan
- Research Unit on Oral Microbiology and ImmunologyFaculty of DentistryChulalongkorn UniversityBangkokThailand
- Department of MicrobiologyFaculty of DentistryChulalongkorn UniversityBangkokThailand
| | - Anjalee Vacharaksa
- Research Unit on Oral Microbiology and ImmunologyFaculty of DentistryChulalongkorn UniversityBangkokThailand
- Department of MicrobiologyFaculty of DentistryChulalongkorn UniversityBangkokThailand
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Lü Q, Gou Y, Tian F, Zhang L. [Research progress on protease-activated receptor 2 in pathogenesis of osteoarthritis]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2017; 31:1517-1522. [PMID: 29806398 DOI: 10.7507/1002-1892.201705025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective To review the research progress on protease-activated receptor 2 (PAR-2) in the pathogenesis of osteoarthritis (OA). Methods The relevant literature about the mechanism of PAR-2 in the occurrence and development of OA in recent years was extensively reviewed and comprehensively analyzed. Results Abnormal activation of PAR-2 plays an important role in responses to occurrence and development of OA. Through regulating production and releasing of a variety of cytokines (such as inflammatory factors, metabolic factors, pain factors, etc.), the PAR-2 can involve in pathophysiological progression of OA articular cartilage, subchondral bone, and synovial membrane, as well as occurrence and transmission of pain. Conclusion PAR-2 participation in the development of OA has been confirmed. However, since PAR-2 is complicated and widespread, it is necessary to study the specific role of PAR-2 and the interaction between various signal pathways in the progression of OA, and to elucidate the potential pathophysiological mechanisms of PAR-2 participating in the process of OA, in the hope of exploring the new targets for the effective control of OA.
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Affiliation(s)
- Qinglie Lü
- Department of Orthopedics, Affiliated Hospital of North China University of Science and Technology, Tangshan Hebei, 063000, P.R.China
| | - Yu Gou
- Graduate School of Hebei Medical University, Shijiazhuang Hebei, 050017, P.R.China
| | - Faming Tian
- Medical Research Center, North China University of Science and Technology, Tangshan Hebei, 063000,
| | - Liu Zhang
- Department of Orthopedics, Affiliated Hospital of North China University of Science and Technology, Tangshan Hebei, 063000,
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25
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Lee DK, Song SU. Immunomodulatory mechanisms of mesenchymal stem cells and their therapeutic applications. Cell Immunol 2017; 326:68-76. [PMID: 28919171 DOI: 10.1016/j.cellimm.2017.08.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 08/27/2017] [Accepted: 08/27/2017] [Indexed: 02/06/2023]
Abstract
In the recent years, many studies have shown that MSCs must be stimulated by pro-inflammatory cytokines or other immune mediators before they can modulate immune cells in inflamed and damaged tissues. MSCs appear to be involved in inducing several regulatory immune cells, such as Tregs, Bregs, and regulatory NK cells. This new immune milieu created by MSCs may establish a tolerogenic environment that leads to an optimal condition for the treatment of immune diseases. The mechanisms of MSC action to treat immune disorders need to be further investigated in more detail. Since there have been some contradictory outcomes of clinical trials, it is necessary to perform large-scale and randomized clinical studies, such as a phase 3 placebo-controlled double-blind study of a third party MSCs to optimize MSC administration and to prove safety and efficacy of MSC treatment. MSCs offer great therapeutic promise, especially for the treatment of difficult-to-treat immune diseases.
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Affiliation(s)
- Don K Lee
- SCM Lifesciences Co. Ltd., Incheon 22332 Republic of Korea
| | - Sun U Song
- Dept. of Integrated Biomedical Sciences, Inha University School of Medicine, Incheon 22332 Republic of Korea; SCM Lifesciences Co. Ltd., Incheon 22332 Republic of Korea.
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26
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Delion M, Braux J, Jourdain ML, Guillaume C, Bour C, Gangloff S, Pimpec-Barthes FL, Sermet-Gaudelus I, Jacquot J, Velard F. Overexpression of RANKL in osteoblasts: a possible mechanism of susceptibility to bone disease in cystic fibrosis. J Pathol 2017; 240:50-60. [PMID: 27235726 DOI: 10.1002/path.4753] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 05/09/2016] [Accepted: 05/18/2016] [Indexed: 12/19/2022]
Abstract
Bone fragility and loss are a significant cause of morbidity in patients with cystic fibrosis (CF), and the lack of effective therapeutic options means that treatment is more often palliative rather than curative. A deeper understanding of the pathogenesis of CF-related bone disease (CFBD) is necessary to develop new therapies. Defective CF transmembrane conductance regulator (CFTR) protein and chronic inflammation in bone are important components of the CFBD development. The receptor activator of nuclear factor kappa-B ligand (RANKL) and osteoprotegerin (OPG) drive the regulation of bone turnover. To investigate their roles in CFBD, we evaluated the involvement of defective CFTR in their production level in CF primary human osteoblasts with and without inflammatory stimulation, in the presence or not of pharmacological correctors of the CFTR. No major difference in cell ultrastructure was noted between cultured CF and non-CF osteoblasts, but a delayed bone matrix mineralization was observed in CF osteoblasts. Strikingly, resting CF osteoblasts exhibited strong production of RANKL protein, which was highly localized at the cell membrane and was enhanced in TNF (TNF-α) or IL-17-stimulated conditions. Under TNF stimulation, a defective response in OPG production was observed in CF osteoblasts in contrast to the elevated OPG production of non-CF osteoblasts, leading to an elevated RANKL-to-OPG protein ratio in CF osteoblasts. Pharmacological inhibition of CFTR chloride channel conductance in non-CF osteoblasts replicated both the decreased OPG production and the enhanced RANKL-to-OPG ratio. Interestingly, using CFTR correctors such as C18, we significantly reduced the production of RANKL by CF osteoblasts, in both resting and TNF-stimulated conditions. In conclusion, the overexpression of RANKL and high membranous RANKL localization in osteoblasts are related to defective CFTR, and may worsen bone resorption, leading to bone loss in patients with CF. Targeting osteoblasts with CFTR correctors may represent an effective strategy to treat CFBD. Copyright © 2016 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Martial Delion
- EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP-Santé (FED 4231), Université Reims Champagne-Ardenne, 1 Avenue du Maréchal Juin, Reims, France
| | - Julien Braux
- EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP-Santé (FED 4231), Université Reims Champagne-Ardenne, 1 Avenue du Maréchal Juin, Reims, France
| | - Marie-Laure Jourdain
- EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP-Santé (FED 4231), Université Reims Champagne-Ardenne, 1 Avenue du Maréchal Juin, Reims, France
| | - Christine Guillaume
- EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP-Santé (FED 4231), Université Reims Champagne-Ardenne, 1 Avenue du Maréchal Juin, Reims, France
| | - Camille Bour
- EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP-Santé (FED 4231), Université Reims Champagne-Ardenne, 1 Avenue du Maréchal Juin, Reims, France
| | - Sophie Gangloff
- EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP-Santé (FED 4231), Université Reims Champagne-Ardenne, 1 Avenue du Maréchal Juin, Reims, France
| | | | - Isabelle Sermet-Gaudelus
- Unité de Pneumo-Pédiatrie Allergologie, Hôpital Necker, Inserm U1551, Université Paris Sorbonne, Paris, France
| | - Jacky Jacquot
- EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP-Santé (FED 4231), Université Reims Champagne-Ardenne, 1 Avenue du Maréchal Juin, Reims, France
| | - Frédéric Velard
- EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP-Santé (FED 4231), Université Reims Champagne-Ardenne, 1 Avenue du Maréchal Juin, Reims, France
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Irwandi RA, Vacharaksa A. The role of microRNA in periodontal tissue: A review of the literature. Arch Oral Biol 2016; 72:66-74. [DOI: 10.1016/j.archoralbio.2016.08.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 08/04/2016] [Accepted: 08/12/2016] [Indexed: 01/12/2023]
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Najar M, Raicevic G, Fayyad-Kazan H, Bron D, Toungouz M, Lagneaux L. Mesenchymal stromal cells and immunomodulation: A gathering of regulatory immune cells. Cytotherapy 2016; 18:160-71. [PMID: 26794710 DOI: 10.1016/j.jcyt.2015.10.011] [Citation(s) in RCA: 181] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 10/01/2015] [Accepted: 10/13/2015] [Indexed: 12/13/2022]
Abstract
Because of their well-recognized immunomodulatory properties, mesenchymal stromal cells (MSCs) represent an attractive cell population for therapeutic purposes. In particular, there is growing interest in the use of MSCs as cellular immunotherapeutics for tolerance induction in allogeneic transplantations and the treatment of autoimmune diseases. However, multiple mechanisms have been identified to mediate the immunomodulatory effects of MSCs, sometimes with several ambiguities and inconsistencies. Although published studies have mainly reported the role of soluble factors, we believe that a sizeable cellular component plays a critical role in MSC immunomodulation. We refer to these cells as regulatory immune cells, which are generated from both the innate and adaptive responses after co-culture with MSCs. In this review, we discuss the nature and role of these immune regulatory cells as well as the role of different mediators, and, in particular, regulatory immune cell induction by MSCs through interleukin-10. Once induced, immune regulatory cells accumulate and converge their regulatory pathways to create a tolerogenic environment conducive for immunomodulation. Thus, a better understanding of these regulatory immune cells, in terms of how they can be optimally manipulated and induced, would be suitable for improving MSC-based immunomodulatory therapeutic strategies.
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Affiliation(s)
- Mehdi Najar
- Laboratory of Clinical Cell Therapy, Institut Jules Bordet, Université Libre de Bruxelles, Campus Erasme, Brussels, Belgium.
| | - Gordana Raicevic
- Laboratory of Clinical Cell Therapy, Institut Jules Bordet, Université Libre de Bruxelles, Campus Erasme, Brussels, Belgium
| | - Hussein Fayyad-Kazan
- Laboratory of Clinical Cell Therapy, Institut Jules Bordet, Université Libre de Bruxelles, Campus Erasme, Brussels, Belgium
| | - Dominique Bron
- Laboratory of Clinical Cell Therapy, Institut Jules Bordet, Université Libre de Bruxelles, Campus Erasme, Brussels, Belgium
| | - Michel Toungouz
- Laboratory of Clinical Cell Therapy, Institut Jules Bordet, Université Libre de Bruxelles, Campus Erasme, Brussels, Belgium
| | - Laurence Lagneaux
- Laboratory of Clinical Cell Therapy, Institut Jules Bordet, Université Libre de Bruxelles, Campus Erasme, Brussels, Belgium
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Zhang D, Huang Y, Huang Z, Zhang R, Wang H, Huang D. FTY-720P Suppresses Osteoclast Formation by Regulating Expression of Interleukin-6 (IL-6), Interleukin-4 (IL-4), and Matrix Metalloproteinase 2 (MMP-2). Med Sci Monit 2016; 22:2187-94. [PMID: 27344392 PMCID: PMC4924886 DOI: 10.12659/msm.896690] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Background Osteoclast formation is closely related to the immune system. FTY720, a new immunosuppressive agent, has some functions in immune regulation. Its main active ingredients become FTY-720P in vivo by phosphorylation modification. The objective of this study was to determine the effects of FTY-720 with various concentrations on osteoclasts in vitro. Material/Methods RAW264.7 cells and bone marrow-derived mononuclear phagocytes (BMMs) were treated with RANKL to obtain osteoclasts in vitro. To investigate the role of FTY-720 in osteoclast formation, trap enzyme staining was performed and the number of osteoclasts was counted. Bone slices were stained with methylene blue, we counted the number of lacunae after bone slices were placed into dishes together with osteoclasts, and we observed the effect and function of FTY-720 in osteoclasts induced by RAW264.7 cells and BMMs. Then, we used a protein array kit to explore the effects of FTY-720P on osteoclasts. Results The results of enzyme trap staining and F-actin staining experiments show that, with the increasing concentration of FTY-720P, the number of osteoclast induced by RAW264.7 cells and BMMs gradually decreased (P<0.05), especially when the FTY-720P concentration reached 1000 ng/ml, and the number of osteoclasts formed was the lowest (P<0.05). With bone lacuna toluidine blue staining, the results also show that, with the increasing concentration of FTY-720P, the number of bone lacuna gradually decreased (P<0.05), and the number of lacunae is lowest when the concentration reached 800 ng/ml. Finally, protein array results showed that IL-4, IL-6, IL-12, MMP-2, VEGF-C, GFR, basic FGF, MIP-2, and insulin proteins were regulated after FTY-720P treatment. Conclusions FTY-720P can suppress osteoclast formation and function, and FTY-720P induces a series of cytokine changes.
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Affiliation(s)
- Dawei Zhang
- Section 2, Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong, China (mainland)
| | - Yongjun Huang
- Department of Microsurgery and Orthopedic Trauma, Guangdong No. 2 Provincial People's Hospital, Guangzhou, Guangdong, China (mainland)
| | - Zongwen Huang
- Section 2, Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong, China (mainland)
| | - Rongkai Zhang
- Section 2, Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong, China (mainland)
| | - Honggang Wang
- Department of Microsurgery and Orthopedic Trauma, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
| | - Dong Huang
- Department of Microsurgery and Orthopedic Trauma, Guangdong No. 2 Provincial People's Hospital, Guangzhou, Guangdong, China (mainland)
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Hadley KB, Ryan AS, Forsyth S, Gautier S, Salem N. The Essentiality of Arachidonic Acid in Infant Development. Nutrients 2016; 8:216. [PMID: 27077882 PMCID: PMC4848685 DOI: 10.3390/nu8040216] [Citation(s) in RCA: 226] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 04/01/2016] [Accepted: 04/05/2016] [Indexed: 01/16/2023] Open
Abstract
Arachidonic acid (ARA, 20:4n-6) is an n-6 polyunsaturated 20-carbon fatty acid formed by the biosynthesis from linoleic acid (LA, 18:2n-6). This review considers the essential role that ARA plays in infant development. ARA is always present in human milk at a relatively fixed level and is accumulated in tissues throughout the body where it serves several important functions. Without the provision of preformed ARA in human milk or infant formula the growing infant cannot maintain ARA levels from synthetic pathways alone that are sufficient to meet metabolic demand. During late infancy and early childhood the amount of dietary ARA provided by solid foods is low. ARA serves as a precursor to leukotrienes, prostaglandins, and thromboxanes, collectively known as eicosanoids which are important for immunity and immune response. There is strong evidence based on animal and human studies that ARA is critical for infant growth, brain development, and health. These studies also demonstrate the importance of balancing the amounts of ARA and DHA as too much DHA may suppress the benefits provided by ARA. Both ARA and DHA have been added to infant formulas and follow-on formulas for more than two decades. The amounts and ratios of ARA and DHA needed in infant formula are discussed based on an in depth review of the available scientific evidence.
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Affiliation(s)
- Kevin B Hadley
- DSM Nutritional Products, 6480 Dobbin Road, Columbia, MD 21045, USA.
| | - Alan S Ryan
- Clinical Research Consulting, 9809 Halston Manor, Boynton Beach, FL 33473, USA.
| | - Stewart Forsyth
- School of Medicine, Dentistry & Nursing, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK.
| | - Sheila Gautier
- DSM Nutritional Products, 6480 Dobbin Road, Columbia, MD 21045, USA.
| | - Norman Salem
- DSM Nutritional Products, 6480 Dobbin Road, Columbia, MD 21045, USA.
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Lee SK, Park KK, Kim KR, Kim HJ, Chung WY. Isoliquiritigenin Inhibits Metastatic Breast Cancer Cell-induced Receptor Activator of Nuclear Factor Kappa-B Ligand/Osteoprotegerin Ratio in Human Osteoblastic Cells. J Cancer Prev 2015; 20:281-6. [PMID: 26734591 PMCID: PMC4699756 DOI: 10.15430/jcp.2015.20.4.281] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 12/09/2015] [Accepted: 12/09/2015] [Indexed: 12/28/2022] Open
Abstract
Bone destruction induced by the metastasis of breast cancer cells is a frequent complication that is caused by the interaction between cancer cells and bone cells. Receptor activator of nuclear factor kappa-B ligand (RANKL) and the endogenous soluble RANKL inhibitor, osteoprotegerin (OPG), directly play critical roles in the differentiation, activity, and survival of osteoclasts. In patients with bone metastases, osteoclastic bone resorption promotes the majority of skeletal-related events and propagates bone metastases. Therefore, blocking osteoclast activity and differentiation via RANKL inhibition can be a promising therapeutic approach for cancer-associated bone diseases. We investigated the potential of isoliquiritigenin (ISL), which has anti-proliferative, anti-angiogenic, and anti-invasive effects, as a preventive and therapeutic agent for breast cancer cell-induced bone destruction. ISL at non-toxicity concentrations significantly inhibited the RANKL/OPG ratio by reducing the production of RANKL and restoring OPG production to control levels in hFOB1.19 cells stimulated with conditioned medium (CM) of MDA-MB-231 cells. In addition, ISL reduced the expression of cyclooxygenase-2 in hFOB1.19 cells stimulated by CM of MDA-MB-231 cells. Therefore, ISL may have inhibitory potential on breast cancer-induced bone destruction.
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Affiliation(s)
- Sun Kyoung Lee
- Department of Oral Biology, Oral Cancer Research Institute, BK21 PLUS Project, Yonsei University College of Dentistry, Korea; Department of Applied Life Science, Yonsei University Graduate School, Seoul, Korea
| | - Kwang-Kyun Park
- Department of Oral Biology, Oral Cancer Research Institute, BK21 PLUS Project, Yonsei University College of Dentistry, Korea; Department of Applied Life Science, Yonsei University Graduate School, Seoul, Korea
| | - Ki Rim Kim
- Department of Dental Hygiene, College of Science and Technology, Kyungpook National University, Sangju, Korea
| | - Hyun-Jeong Kim
- Department of Oral Biology, Oral Cancer Research Institute, BK21 PLUS Project, Yonsei University College of Dentistry, Korea; Department of Applied Life Science, Yonsei University Graduate School, Seoul, Korea
| | - Won-Yoon Chung
- Department of Oral Biology, Oral Cancer Research Institute, BK21 PLUS Project, Yonsei University College of Dentistry, Korea; Department of Applied Life Science, Yonsei University Graduate School, Seoul, Korea
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Jasiewicz M, Knapp M, Waszkiewicz E, Ptaszynska-Kopczynska K, Szpakowicz A, Sobkowicz B, Musial WJ, Kaminski KA. Enhanced IL-6 trans-signaling in pulmonary arterial hypertension and its potential role in disease-related systemic damage. Cytokine 2015; 76:187-192. [PMID: 26163998 DOI: 10.1016/j.cyto.2015.06.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 06/25/2015] [Accepted: 06/30/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND The role of IL-6 in pulmonary arterial hypertension (PAH) has been reported but the prevalence of soluble receptors for IL-6: sIL-6R and sgp130 and its potential role in PAH have not been studied.Our aim was to examine the IL-6 together with the soluble receptors and to assess its relationship with clinical status of PAH patients as well as to assess its potential prognostic significance. METHODS Serum concentrations of IL-6, sIL-6R and sgp130 were quantified by ELISA in 26 patients with PAH and 27 healthy controls and related to functional and biochemical parameters and clinical outcome in PAH group. The PAH patients were followed up for 1 year, noting the end point of clinical deterioration (WHO class change, the need for escalation of therapy) or death. RESULTS The PAH group was characterized by higher median serum IL-6 [2.38 (IQR 1.56-3.75) vs 0.87 (0.63-1.3) pg/ml, p=0.000003] and sIL-6R concentrations [69.7 (IQR 60.4-84.4 vs 45.7 (34.6-70.3) ng/ml, p=0.0036] compared to control subjects. Both groups did not differ in sgp130 concentrations. There were significant correlations in PAH group between IL-6 levels and uric acid, parameters of ventilatory efficiency in cardiopulmonary exercise testing: VE/VO2, VE/VCO2, VE/VCO2 slope and peak PetCO2. sIL-6R levels inversely correlated with LDL cholesterol. After 1 year the clinical deterioration occurred in 11 patients, 15 remained stable. Patients in whom the clinical deterioration occurred showed significantly higher baseline concentrations of IL-6 [3.25 (IQR 2.46-5.4) pg/ml vs 1.68 (1.38-2.78) pg/ml, p=0.004], but not sIL-6R. Median IL-6 ⩾ 2.3 pg/ml (91% sensitivity, 73% specificity) identified subjects with worse clinical course. In the univariate analysis, higher IL-6 level at baseline was associated with increased risk and earlier occurrence of clinical deterioration (HR 1.42, 95%CI 1.08-1.85, p=0.015). CONCLUSIONS IL-6 trans-signaling is enhanced in PAH. Elevated concentration of sIL-6R suggests its potential unfavorable role in systemic amplification of IL-6 signaling in PAH. Levels of IL-6 are associated with clinical indicators of disease severity as well as indirectly with systemic metabolic alterations. IL-6 shows prognostic value regarding predicting clinical deterioration.
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Affiliation(s)
- Malgorzata Jasiewicz
- Department of Cardiology, Medical University of Bialystok, ul. M. Sklodowskiej-Curie 24 A, 15-276 Bialystok, Poland.
| | - Malgorzata Knapp
- Department of Cardiology, Medical University of Bialystok, ul. M. Sklodowskiej-Curie 24 A, 15-276 Bialystok, Poland.
| | - Ewa Waszkiewicz
- Department of Cardiology, Medical University of Bialystok, ul. M. Sklodowskiej-Curie 24 A, 15-276 Bialystok, Poland.
| | | | - Anna Szpakowicz
- Department of Cardiology, Medical University of Bialystok, ul. M. Sklodowskiej-Curie 24 A, 15-276 Bialystok, Poland.
| | - Bozena Sobkowicz
- Department of Cardiology, Medical University of Bialystok, ul. M. Sklodowskiej-Curie 24 A, 15-276 Bialystok, Poland.
| | - Wlodzimierz Jerzy Musial
- Department of Cardiology, Medical University of Bialystok, ul. M. Sklodowskiej-Curie 24 A, 15-276 Bialystok, Poland.
| | - Karol Adam Kaminski
- Department of Cardiology, Medical University of Bialystok, ul. M. Sklodowskiej-Curie 24 A, 15-276 Bialystok, Poland.
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Mesenchymal stromal cell implantation for stimulation of long bone healing aggravates Staphylococcus aureus induced osteomyelitis. Acta Biomater 2015; 21:165-77. [PMID: 25805108 DOI: 10.1016/j.actbio.2015.03.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 03/05/2015] [Accepted: 03/17/2015] [Indexed: 01/08/2023]
Abstract
Large bone defects requiring long-term osteosynthetic stabilization or repeated surgeries show a considerable rate of infection. Mesenchymal stromal cells (MSCs) have been successfully used to enhance bone regeneration, but their powerful immunomodulatory effects may impose an enhanced risk for osteomyelitis development. In order to unravel whether implantation of MSCs aggravates a simultaneous bone infection, a hydrogel-supported osteomyelitis ostectomy model was developed in which rats received a femoral bone defect with rigid plate-fixation. After fibrin-assisted transfer of Staphylococcus aureus (SA), effects of MSC implantation on osteomyelitis development were quantified over 3-4 weeks. All SA-infected animals developed an acute local osteomyelitis with significantly increased blood neutrophil count, abscess formation and bone destruction. MSC-treatment of infected defects aggravated osteomyelitis according to a significantly elevated osteomyelitis score and enhanced distal bone loss with spongy alteration of cortical bone architecture. Increased attraction of macrophages, osteoclasts and regulation of pro- and anti-inflammatory mediators were potential MSC actions. Overall trophic actions of MSCs implanted into non-sterile bone defects may enhance an infection and/or exacerbate osteomyelitis. Studies on antibiotic carrier augmentation or antibiotic treatment are warranted to decide whether MSC implantation is a safe and promising therapy for orthopedic implant-stabilized bone defects at high risk for development of infection.
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During A, Penel G, Hardouin P. Understanding the local actions of lipids in bone physiology. Prog Lipid Res 2015; 59:126-46. [PMID: 26118851 DOI: 10.1016/j.plipres.2015.06.002] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 06/12/2015] [Accepted: 06/18/2015] [Indexed: 12/19/2022]
Abstract
The adult skeleton is a metabolically active organ system that undergoes continuous remodeling to remove old and/or stressed bone (resorption) and replace it with new bone (formation) in order to maintain a constant bone mass and preserve bone strength from micro-damage accumulation. In that remodeling process, cellular balances--adipocytogenesis/osteoblastogenesis and osteoblastogenesis/osteoclastogenesis--are critical and tightly controlled by many factors, including lipids as discussed in the present review. Interest in the bone lipid area has increased as a result of in vivo evidences indicating a reciprocal relationship between bone mass and marrow adiposity. Lipids in bones are usually assumed to be present only in the bone marrow. However, the mineralized bone tissue itself also contains small amounts of lipids which might play an important role in bone physiology. Fatty acids, cholesterol, phospholipids and several endogenous metabolites (i.e., prostaglandins, oxysterols) have been purported to act on bone cell survival and functions, the bone mineralization process, and critical signaling pathways. Thus, they can be regarded as regulatory molecules important in bone health. Recently, several specific lipids derived from membrane phospholipids (i.e., sphingosine-1-phosphate, lysophosphatidic acid and different fatty acid amides) have emerged as important mediators in bone physiology and the number of such molecules will probably increase in the near future. The present paper reviews the current knowledge about: (1°) bone lipid composition in both bone marrow and mineralized tissue compartments, and (2°) local actions of lipids on bone physiology in relation to their metabolism. Understanding the roles of lipids in bone is essential to knowing how an imbalance in their signaling pathways might contribute to bone pathologies, such as osteoporosis.
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Affiliation(s)
- Alexandrine During
- Université Lille 2, Laboratoire de Physiopathologie des maladies osseuses inflammatoires (PMOI), EA4490, Faculté de Chirurgie dentaire, Lille, France.
| | - Guillaume Penel
- Université Lille 2, Laboratoire de Physiopathologie des maladies osseuses inflammatoires (PMOI), EA4490, Faculté de Chirurgie dentaire, Lille, France
| | - Pierre Hardouin
- Université Lille 2, Laboratoire de Physiopathologie des maladies osseuses inflammatoires (PMOI), EA4490, Faculté de Chirurgie dentaire, Lille, France; Université ULCO, Laboratoire de Physiopathologie des maladies osseuses inflammatoires (PMOI), EA4490, Boulogne-sur-Mer, France
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Onal M, Bishop KA, St John HC, Danielson AL, Riley EM, Piemontese M, Xiong J, Goellner JJ, O'Brien CA, Pike JW. A DNA segment spanning the mouse Tnfsf11 transcription unit and its upstream regulatory domain rescues the pleiotropic biologic phenotype of the RANKL null mouse. J Bone Miner Res 2015; 30:855-68. [PMID: 25431114 PMCID: PMC5240630 DOI: 10.1002/jbmr.2417] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 11/15/2014] [Accepted: 11/24/2014] [Indexed: 12/26/2022]
Abstract
Receptor activator of NF-κB ligand (RANKL) is a TNFα-like cytokine that is produced by a diverse set of lineage-specific cells and is involved in a wide variety of physiological processes that include skeletal remodeling, lymph node organogenesis, mammary gland development, and thermal regulation. Consistent with these diverse functions, control of RANKL expression is accomplished in a cell-specific fashion via a set of at least 10 regulatory enhancers that are located up to 170 kb upstream of the gene's transcriptional start site. Here we examined the in vivo consequence of introducing a contiguous DNA segment containing these components into a genetically deleted RANKL null mouse strain. In contrast to RANKL null littermates, null mice containing the transgene exhibited normalized body size, skeletal development, and bone mass as well as normal bone marrow cavities, normalized spleen weights, and the presence of developed lymph nodes. These mice also manifested normalized reproductive capacity, including the ability to lactate and to produce normal healthy litters. Consistent with this, the transgene restored endogenous-like RANKL transcript levels in several RANKL-expressing tissues. Most importantly, restoration of RANKL expression from this segment of DNA was fully capable of rescuing the complex aberrant skeletal and immune phenotype of the RANKL null mouse. RANKL also restored appropriate levels of B220+ IgM+ and B220+ IgD+ B cells in spleen. Finally, we found that RANKL expression from this transgene was regulated by exogenously administered 1,25(OH)2 D3 , parathyroid hormone (PTH), and lipopolysaccharide (LPS), thus recapitulating the ability of these same factors to regulate the endogenous gene. These findings fully highlight the properties of the Tnfsf11 gene locus predicted through previous in vitro dissection. We conclude that the mouse Tnfsf11 gene locus identified originally through unbiased chromatin immunoprecipitation with DNA microarray (ChIP-chip) analysis contains the necessary genetic information to direct appropriate tissue-specific and factor-regulated RANKL expression in vivo.
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Affiliation(s)
- Melda Onal
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA
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Li P, Shan JX, Chen XH, Zhang D, Su LP, Huang XY, Yu BQ, Zhi QM, Li CL, Wang YQ, Tomei S, Cai Q, Ji J, Li JF, Chouchane L, Yu YY, Sun FZ, Xu ZH, Liu BY, Zhu ZG. Epigenetic silencing of microRNA-149 in cancer-associated fibroblasts mediates prostaglandin E2/interleukin-6 signaling in the tumor microenvironment. Cell Res 2015; 25:588-603. [PMID: 25916550 PMCID: PMC4423088 DOI: 10.1038/cr.2015.51] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 11/27/2014] [Accepted: 12/17/2014] [Indexed: 12/25/2022] Open
Abstract
Tumor initiation and growth depend on its microenvironment in which cancer-associated fibroblasts (CAFs) in tumor stroma play an important role. Prostaglandin E2 (PGE2) and interleukin (IL)-6 signal pathways are involved in the crosstalk between tumor and stromal cells. However, how PGE2-mediated signaling modulates this crosstalk remains unclear. Here, we show that microRNA (miR)-149 links PGE2 and IL-6 signaling in mediating the crosstalk between tumor cells and CAFs in gastric cancer (GC). miR-149 inhibited fibroblast activation by targeting IL-6 and miR-149 expression was substantially suppressed in the CAFs of GC. miR-149 negatively regulated CAFs and their effect on GC development both in vitro and in vivo. CAFs enhanced epithelial-to-mesenchymal transition (EMT) and the stem-like properties of GC cells in a miR-149-IL-6-dependent manner. In addition to IL-6, PGE2 receptor 2 (PTGER2/EP2) was revealed as another potential target of miR-149 in fibroblasts. Furthermore, H. pylori infection, a leading cause of human GC, was able to induce cyclooxygenase-2 (COX-2)/PGE2 signaling and to enhance PGE2 production, resulting in the hypermethylation of miR-149 in CAFs and increased IL-6 secretion. Our findings indicate that miR-149 mediates the crosstalk between tumor cells and CAFs in GC and highlight the potential of interfering miRNAs in stromal cells to improve cancer therapy.
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Affiliation(s)
- Pu Li
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Jing-Xuan Shan
- Laboratory of Genetic Medicine and Immnology, Weill Cornell Medical College in Qatar, Education City, P.O. Box 24144, Doha, Qatar
| | - Xue-Hua Chen
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Di Zhang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 1 West Beichen Rd, Beijing 100101, China
| | - Li-Ping Su
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Xiu-Ying Huang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 1 West Beichen Rd, Beijing 100101, China
| | - Bei-Qin Yu
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Qiao-Ming Zhi
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Cheng-Long Li
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Ya-Qing Wang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 1 West Beichen Rd, Beijing 100101, China
| | - Sara Tomei
- Laboratory of Genetic Medicine and Immnology, Weill Cornell Medical College in Qatar, Education City, P.O. Box 24144, Doha, Qatar
| | - Qu Cai
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Jun Ji
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Jian-Fang Li
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Lotfi Chouchane
- Laboratory of Genetic Medicine and Immnology, Weill Cornell Medical College in Qatar, Education City, P.O. Box 24144, Doha, Qatar
| | - Ying-Yan Yu
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Fang-Zhen Sun
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 1 West Beichen Rd, Beijing 100101, China
| | - Zhi-Heng Xu
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 1 West Beichen Rd, Beijing 100101, China
| | - Bing-Ya Liu
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
| | - Zheng-Gang Zhu
- Department of Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin Er Rd, Shanghai 200025, China
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Wei J, Wang J, Gong Y, Zeng R. Effectiveness of combined salmon calcitonin and aspirin therapy for osteoporosis in ovariectomized rats. Mol Med Rep 2015; 12:1717-26. [PMID: 25891179 PMCID: PMC4464425 DOI: 10.3892/mmr.2015.3637] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 03/12/2015] [Indexed: 02/03/2023] Open
Abstract
The objective of the present study was to assess the effectiveness of combined salmon calcitonin (sCT) and aspirin [acetylsalicylic acid (ASA)] treatment in an ovariectomized (OVX) rat model of postmenopausal osteoporosis. Following 12 weeks of treatment, therapeutic efficacy was assessed by evaluating changes in the biochemical and biophysical properties of bone (n=8 rats per group). Serological markers of bone metabolism were measured by ELISA; bone mineral densities (BMD) by dual energy X-ray absorptiometry; bone biomechanics of the femur and lumbar vertebrae by three-point stress test; trabecular bone morphology of lumbar vertebrae by hematoxylin and eosin staining; messenger RNA expression levels of osteoprotegerin (OPG) and receptor activator of nuclear factor κB ligand (RANKL) in bone marrow cells by reverse transcription-quantitative polymerase chain reaction and OPG and RANKL protein expression levels in the proximal tibia were analyzed by immunohistochemistry. Compared with treatment by sCT or ASA alone, combined treatment (sCT+ASA) increased BMD, improved femur bone strength, normalized trabecular network architecture and morphology, and increased mRNA and protein expression of OPG, while reducing the expression of RANKL. Collectively, these results demonstrated that combined treatment (sCT+ASA) of osteoporotic symptoms in OVX rats was more effective than treatment with sCT or ASA alone. Furthermore, these two drugs appeared to alter the expression of two distinct factors in the OPG/RANKL/RANK system, suggesting that their effects may be synergistic. Since sCT and ASA are currently approved for use in humans, the results of the present study suggest that the safety and efficacy of sCT+ASA combined therapy for post-menopausal osteoporosis should be assessed in clinical trials.
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Affiliation(s)
- Jinsong Wei
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong 524001, P.R. China
| | - Jian Wang
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong 524001, P.R. China
| | - Yan Gong
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong 524001, P.R. China
| | - Rong Zeng
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong 524001, P.R. China
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Xu H, Gu S, Riquelme MA, Burra S, Callaway D, Cheng H, Guda T, Schmitz J, Fajardo RJ, Werner SL, Zhao H, Shang P, Johnson ML, Bonewald LF, Jiang JX. Connexin 43 channels are essential for normal bone structure and osteocyte viability. J Bone Miner Res 2015; 30:436-48. [PMID: 25270829 PMCID: PMC4333056 DOI: 10.1002/jbmr.2374] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 08/28/2014] [Accepted: 10/01/2014] [Indexed: 11/10/2022]
Abstract
Connexin (Cx) 43 serves important roles in bone function and development. Targeted deletion of Cx43 in osteoblasts or osteocytes leads to increased osteocyte apoptosis, osteoclast recruitment, and reduced biomechanical properties. Cx43 forms both gap junction channels and hemichannels, which mediate the communication between adjacent cells or between cell and extracellular environments, respectively. Two transgenic mouse models driven by a DMP1 promoter with the overexpression of dominant negative Cx43 mutants were generated to dissect the functional contribution of Cx43 gap junction channels and hemichannels in osteocytes. The R76W mutant blocks the gap junction channel, but not the hemichannel function, and the Δ130-136 mutant inhibits activity of both types of channels. Δ130-136 mice showed a significant increase in bone mineral density compared to wild-type (WT) and R76W mice. Micro-computed tomography (µCT) analyses revealed a significant increase in total tissue and bone area in midshaft cortical bone of Δ130-136 mice. The bone marrow cavity was expanded, whereas the cortical thickness was increased and associated with increased bone formation along the periosteal area. However, there is no significant alteration in the structure of trabecular bone. Histologic sections of the midshaft showed increased apoptotic osteocytes in Δ130-136, but not in WT and R76W, mice which correlated with altered biomechanical and estimated bone material properties. Osteoclasts were increased along the endocortical surface in both transgenic mice with a greater effect in Δ130-136 mice that likely contributed to the increased marrow cavity. Interestingly, the overall expression of serum bone formation and resorption markers were higher in R76W mice. These findings suggest that osteocytic Cx43 channels play distinctive roles in the bone; hemichannels play a dominant role in regulating osteocyte survival, endocortical bone resorption, and periosteal apposition, and gap junction communication is involved in the process of bone remodeling.
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Affiliation(s)
- Huiyun Xu
- School of Life Sciences, Northwestern Polytechnical University, Xian, China
- Department of Biochemistry, University of Texas Health Science Center at San Antonio, Texas
| | - Sumin Gu
- Department of Biochemistry, University of Texas Health Science Center at San Antonio, Texas
| | - Manuel A. Riquelme
- Department of Biochemistry, University of Texas Health Science Center at San Antonio, Texas
| | - Sirisha Burra
- Department of Biochemistry, University of Texas Health Science Center at San Antonio, Texas
| | - Danielle Callaway
- Department of Biochemistry, University of Texas Health Science Center at San Antonio, Texas
| | - Hongyun Cheng
- Department of Biochemistry, University of Texas Health Science Center at San Antonio, Texas
| | - Teja Guda
- Department of Biomedical Engineering, University of Texas at San Antonio, Texas
| | - James Schmitz
- Department of Orthopedics, University of Texas Health Science Center at San Antonio, Texas
| | - Roberto J. Fajardo
- Department of Orthopedics, University of Texas Health Science Center at San Antonio, Texas
| | - Sherry L. Werner
- Department of Pathology, University of Texas Health Science Center at San Antonio, Texas
| | - Hong Zhao
- Department of Oral Biology, School of Dentistry, University of Missouri, Kansas City, MO
| | - Peng Shang
- School of Life Sciences, Northwestern Polytechnical University, Xian, China
| | - Mark L. Johnson
- Department of Oral Biology, School of Dentistry, University of Missouri, Kansas City, MO
| | - Lynda F. Bonewald
- Department of Oral Biology, School of Dentistry, University of Missouri, Kansas City, MO
| | - Jean X. Jiang
- Department of Biochemistry, University of Texas Health Science Center at San Antonio, Texas
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Miyamoto Y. Molecular mechanisms for bone resorption by gingipains: Degradation of osteoprotegerin by lysine-specific gingipain is a key factor for enhanced osteoclastogenesis. J Oral Biosci 2014. [DOI: 10.1016/j.job.2014.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ohtsuji M, Lin Q, Nishikawa K, Ohtsuji N, Okazaki H, Tsurui H, Amano H, Shirai T, Nishimoto N, Nishimura H, Hirose S. IL-6 signal blockade ameliorates the enhanced osteoclastogenesis and the associated joint destruction in a novel FcγRIIB-deficient rheumatoid arthritis mouse model. Mod Rheumatol 2014; 25:270-7. [PMID: 25159156 DOI: 10.3109/14397595.2014.950035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE We earlier found that TNFα but not interleukin (IL)-17 is indispensable in the pathogenesis of spontaneously occurring rheumatoid arthritis (RA)-like disease in our newly established FcγRIIB-deficient C57BL/6 (B6) mouse model, designated KO1. Here, we examined the role of IL-6 in the pathogenesis of RA features in KO1, with particular reference to cartilage and bone destruction in arthritic joints. METHODS To evaluate the preventive effect of MR16-1, a rat anti-mouse IL-6 receptor (IL-6R) mAb, 4-month-old preclinical KO1 mice were divided into three groups: the first treated with MR16-1 for 6 months, the second treated with normal rat IgG, as a control, and the third left untreated. The incidence and severity of arthritis, immunological abnormalities, and transcription levels of receptor activator of NF-κB ligand (RANKL), osteoprotegerin (OPG), and inflammatory cytokines/chemokines in ankle joint tissues were compared among the three groups. The therapeutic effect of MR16-1 was examined by treating 7-month-old KO1 mice in the early stages of arthritis for 2 months. RESULTS Compared with the findings in the KO1 mice left untreated or treated with normal rat IgG, the development of arthritis was markedly suppressed in mice with MR16-1 treatment started from preclinical stages. The suppression was associated with the decrease in production of autoantibodies, rheumatoid factors (RF), and anti-cyclic citrullinated peptide (CCP). Histologically, marked synovitis, pannus formation, and cartilage and bone destruction associated with the increase in tartrate-resistant acid phosphatase (TRAP)-positive osteoclast generation were evident in the two control groups; however, these findings were virtually absent in MR16-1-treated mice. Real-time PCR analysis revealed that the up-regulated expression levels of MCP-1, IL-6, and TNFα, and the aberrantly high RANKL/OPG expression ratio in synovial joint tissues from the two control groups of mice with overt arthritis were significantly suppressed in MR16-1-treated mice. In mice with therapeutic MR16-1 treatment, there was no progression in arthritis score and the RANKL/OPG ratio in joint tissues was significantly suppressed. CONCLUSIONS Administration of an anti-IL-6R mAb ameliorated spontaneously occurring RA-like disease features, indicating that IL-6, as well as TNFα, plays a pivotal role in the pathogenesis of RA in KO1 mice. Current studies showed that, in addition to the role in enhancing autoantibody production, IL-6 promotes synovial tissue inflammation and osteoclastogenesis, leading to the severe synovitis with pannus formation and the progressive cartilage and bone destruction in multiple joints.
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Affiliation(s)
- Mareki Ohtsuji
- Department of Biomedical Engineering, Toin Human Science and Technology Center, Toin University of Yokohama , Yokohama , Japan
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Biomechanical loading modulates proinflammatory and bone resorptive mediators in bacterial-stimulated PDL cells. Mediators Inflamm 2014; 2014:425421. [PMID: 24976684 PMCID: PMC4058179 DOI: 10.1155/2014/425421] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/26/2014] [Accepted: 04/29/2014] [Indexed: 01/20/2023] Open
Abstract
The present study aimed to evaluate in vitro whether biomechanical loading modulates proinflammatory and bone remodeling mediators production by periodontal ligament (PDL) cells in the presence of bacterial challenge. Cells were seeded on BioFlex culture plates and exposed to Fusobacterium nucleatum ATCC 25586 and/or cyclic tensile strain (CTS) of low (CTSL) and high (CTSH) magnitudes for 1 and 3 days. Synthesis of cyclooxygenase-2 (COX2) and prostaglandin E2 (PGE2) was evaluated by ELISA. Gene expression and protein secretion of osteoprotegerin (OPG) and receptor activator of nuclear factor kappa-B ligand (RANKL) were evaluated by quantitative RT-PCR and ELISA, respectively. F. nucleatum increased the production of COX2 and PGE2, which was further increased by CTS. F. nucleatum-induced increase of PGE2 synthesis was significantly (P < 0.05) increased when CTSH was applied at 1 and 3 days. In addition, CTSH inhibited the F. nucleatum-induced upregulation of OPG at 1 and 3 days, thereby increasing the RANKL/OPG ratio. OPG and RANKL mRNA results correlated with the protein results. In summary, our findings provide original evidence that CTS can enhance bacterial-induced syntheses of molecules associated with inflammation and bone resorption by PDL cells. Therefore, biomechanical, such as orthodontic or occlusal, loading may enhance the bacterial-induced inflammation and destruction in periodontitis.
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Akiyama T, Miyamoto Y, Yoshimura K, Yamada A, Takami M, Suzawa T, Hoshino M, Imamura T, Akiyama C, Yasuhara R, Mishima K, Maruyama T, Kohda C, Tanaka K, Potempa J, Yasuda H, Baba K, Kamijo R. Porphyromonas gingivalis-derived lysine gingipain enhances osteoclast differentiation induced by tumor necrosis factor-α and interleukin-1β but suppresses that by interleukin-17A: importance of proteolytic degradation of osteoprotegerin by lysine gingipain. J Biol Chem 2014; 289:15621-30. [PMID: 24755218 DOI: 10.1074/jbc.m113.520510] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Periodontitis is a chronic inflammatory disease accompanied by alveolar bone resorption by osteoclasts. Porphyromonas gingivalis, an etiological agent for periodontitis, produces cysteine proteases called gingipains, which are classified based on their cleavage site specificity (i.e. arginine (Rgps) and lysine (Kgps) gingipains). We previously reported that Kgp degraded osteoprotegerin (OPG), an osteoclastogenesis inhibitory factor secreted by osteoblasts, and enhanced osteoclastogenesis induced by various Toll-like receptor (TLR) ligands (Yasuhara, R., Miyamoto, Y., Takami, M., Imamura, T., Potempa, J., Yoshimura, K., and Kamijo, R. (2009) Lysine-specific gingipain promotes lipopolysaccharide- and active-vitamin D3-induced osteoclast differentiation by degrading osteoprotegerin. Biochem. J. 419, 159-166). Osteoclastogenesis is induced not only by TLR ligands but also by proinflammatory cytokines, including tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-17A, in inflammatory conditions, such as periodontitis. Although Kgp augmented osteoclastogenesis induced by TNF-α and IL-1β in co-cultures of mouse osteoblasts and bone marrow cells, it suppressed that induced by IL-17A. In a comparison of proteolytic degradation of these cytokines by Kgp in a cell-free system with that of OPG, TNF-α and IL-1β were less susceptible, whereas IL-17A and OPG were equally susceptible to degradation by Kgp. These results indicate that the enhancing effect of Kgp on cytokine-induced osteoclastogenesis is dependent on the difference in degradation efficiency between each cytokine and OPG. In addition, elucidation of the N-terminal amino acid sequences of OPG fragments revealed that Kgp primarily cleaved OPG in its death domain homologous region, which might prevent dimer formation of OPG required for inhibition of receptor activator of nuclear factor κB ligand. Collectively, our results suggest that degradation of OPG by Kgp is a crucial event in the development of osteoclastogenesis and bone loss in periodontitis.
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Affiliation(s)
- Tomohito Akiyama
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan, the Department of Prosthodontics, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Yoichi Miyamoto
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan,
| | - Kentaro Yoshimura
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Atsushi Yamada
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Masamichi Takami
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Tetsuo Suzawa
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Marie Hoshino
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan, the Department of Prosthodontics, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Takahisa Imamura
- the Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Chie Akiyama
- the Department of Molecular Pathology, Faculty of life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Rika Yasuhara
- the Department of Molecular Pathology, Faculty of life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Kenji Mishima
- the Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Toshifumi Maruyama
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan, the Department of Prosthodontics, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Chikara Kohda
- the Department of Microbiology, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Kazuo Tanaka
- the Department of Microbiology, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Jan Potempa
- the Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, ul. Gronostajowa 7, 30-387 Krakow, Poland, the Oral Health and Systemic Diseases Group, University of Louisville School of Dentistry, Louisville, Kentucky 40202, and
| | - Hisataka Yasuda
- the Bioindustry Division, Oriental Yeast Company Ltd., Tokyo 174-8505, Japan
| | - Kazuyoshi Baba
- the Department of Prosthodontics, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Ryutaro Kamijo
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
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Wang HC, Jiang WP, Sima ZH, Li TJ. Fibroblasts isolated from a keratocystic odontogenic tumor promote osteoclastogenesis in vitro via interaction with epithelial cells. Oral Dis 2014; 21:170-7. [PMID: 24581331 DOI: 10.1111/odi.12231] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 02/04/2014] [Accepted: 02/20/2014] [Indexed: 01/02/2023]
Abstract
OBJECTIVES Investigate the role of the epithelial-mesenchymal interaction of keratocystic odontogenic tumor (KCOT) in influencing osteoclastogenesis. MATERIALS AND METHODS Fibroblasts isolated from KCOT fibrous capsule and normal gingival mucosa were, respectively, co-cultured with human immortalized oral epithelial cells (HIOECs), and the supernatant was collected to make conditioned medium, in which the osteoclastogenesis of osteoclast precursor cell line Raw 264.7 was observed. Genes related to bone resorption (RANKL, OPG, COX-2, and M-CSF) were analyzed by real-time PCR. Antibodies against human sRANKL and inhibitor of COX-2: NS398 were added to conditioned medium to investigate the inhibitory effect on osteoclastogenesis. RESULTS Compared with co-cultured gingival fibroblasts and HIOECs (GE-CM), the conditioned medium from co-cultured KCOT fibroblasts and HIOECs (KE-CM) induced more osteoclast-like cell formation and increased NFATC1 mRNA in Raw264.7 cells (P < 0.05). Co-cultured KCOT fibroblasts (KF) and HIOECs, respectively, expressed more COX-2 mRNA than the co-cultured gingival fibroblasts (GF) and HIOECs (P < 0.05). While the ratio of RANKL/OPG in HIOECs co-cultured with KF was also significantly higher than that co-cultured with GF (P < 0.05). The anti-human sRANKL antibody in KE-CM inhibited osteoclastogenesis of Raw264.7 cells; however, NS398 displayed little inhibition. CONCLUSION An interesting phenomenon of osteoclastogenic effect of KE-CM in vitro was investigated, which suggested an indispensable role of epithelial-mesenchymal interaction of KCOT in its bone destruction. It could be at least partly attributed to the up-regulated ratio of RANKL/OPG in epithelium induced by KCOT fibroblasts, the aggressiveness of tumor as result of epithelial-mesenchymal interaction deserves exploration further.
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Affiliation(s)
- H-C Wang
- Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, China
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Muruganandan S, Sinal CJ. The impact of bone marrow adipocytes on osteoblast and osteoclast differentiation. IUBMB Life 2014; 66:147-155. [PMID: 24638917 DOI: 10.1002/iub.1254] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 02/28/2014] [Indexed: 01/07/2023]
Abstract
Throughout life, bone is constantly remodeled through the complementary processes of bone resorption and bone formation. Highly coordinated regulation of these activities is essential for maintaining consistent bone quality and quantity. Normally, the development and function of bone-forming (osteoblast) and bone-resorbing (osteoclast) cells are tightly regulated by signaling molecules secreted by these two cell types. Within the bone marrow microenvironment, osteoblasts arise from mesenchymal stem cells (MSCs), which are in close contact with the hematopoietic stem cell (HSC) precursors that differentiate into mature osteoclasts. Signaling molecules secreted by osteoblasts (e.g., receptor activator of nuclear factor kappa B ligand and osteoprotegerin) and osteoclasts (e.g., bone morphogenetic protein 6, wingless-type MMTV integration site family member 10B, sphingosine-1-phosphate, and ephrin-B2) play a key role in bone remodeling by guiding the differentiation, localization, and function of bone cells. In addition to osteoblasts, bone marrow MSCs can also differentiate into adipocytes that affect bone remodeling by competitively suppressing intracellular osteogenic signals, including runt-related transcription factor 2, osterix, and beta-catenin, while simultaneously promoting the secretion of adipogenic signaling molecules such as leptin, adiponectin, chemerin, omentin-1, resistin, and visfatin. Secreted adipogenic factors have also been shown to affect the osteoclastogenic differentiation of HSCs. Herein, we discuss the impact of bone marrow adipocytes on the coupling of osteoblast and osteoclast differentiation, and the relevance to bone-loss disorders such as osteoporosis. © 2014 IUBMB Life, 66(3):147-155, 2014.
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Affiliation(s)
| | - Christopher J Sinal
- Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada
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Juffer P, Jaspers RT, Klein-Nulend J, Bakker AD. Mechanically loaded myotubes affect osteoclast formation. Calcif Tissue Int 2014; 94:319-26. [PMID: 24264813 DOI: 10.1007/s00223-013-9813-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 10/24/2013] [Indexed: 01/06/2023]
Abstract
In response to mechanical loading skeletal muscle produces numerous growth factors and cytokines that enter the circulation. We hypothesized that myotubes produce soluble factors that affect osteoclast formation and aimed to identify which osteoclastogenesis-modulating factors are differentially produced by mechanically stimulated myotubes. C2C12 myotubes were subjected to mechanical loading by cyclic strain for 1 h, and postincubated with or without cyclic strain for 24 h. The effect of cyclic strain on gene expression in myotubes was determined by PCR. Conditioned medium (CM) was collected from cultures of unloaded and loaded myotubes and from MLO-Y4 osteocytes. CM was added to mouse bone marrow cells containing osteoclast precursors, and after 6 days osteoclasts were counted. Compared to unconditioned medium, CM from unloaded osteocytes increased osteoclast formation, while CM from unloaded myotubes decreased osteoclast formation. Cyclic strain strongly enhanced IL-6 expression in myotubes. CM from cyclically strained myotubes increased osteoclast formation compared to CM from unloaded myotubes, but this effect did not occur in the presence of an IL-6 antibody. In conclusion, mechanically loaded myotubes secrete soluble factors, among others IL-6, which affect osteoclast formation. These results suggest that muscle could potentially affect bone homeostasis in vivo via production of growth factors and/or cytokines.
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Affiliation(s)
- Petra Juffer
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), MOVE Research Institute Amsterdam, University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
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Zupan J, Jeras M, Marc J. Osteoimmunology and the influence of pro-inflammatory cytokines on osteoclasts. Biochem Med (Zagreb) 2013; 23:43-63. [PMID: 23457765 PMCID: PMC3900089 DOI: 10.11613/bm.2013.007] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Bone and immune system are functionally interconnected. Immune and bone cells derive from same progenitors in the bone marrow, they share a common microenvironment and are being influenced by similar mediators. The evidence on increased bone resorption associated with inappropriate activation of T cells such as during inflammation, is well established. However, the molecular mechanisms beyond this clinical observation have begun to be intensively studied with the advancement of osteoimmunology. Now days, we have firm evidence on the influence of numerous proinflammatory cytokines on bone cells, with the majority of data focused on osteoclasts, the bone resorbing cells. It has been shown that some proinflammatory cytokines could possess osteoclastogenic and/or anti-osteoclastogenic properties and can target osteoclasts directly or via receptor activator of nuclear factor κB (RANK)/RANK ligand(RANKL)/osteoprotegerin (OPG) system. Several studies have reported opposing data regarding (anti)osteoclastogenic properties of these cytokines. Therefore, the first part of this review is summarizing current evidence on the influence of pro-inflammatory cytokines on osteoclasts and thus on bone resorption. In the second part, the evidence on the role of pro-inflammatory cytokines in osteoporosis and osteoarthritis is reviewed to show that unravelling the mechanisms beyond such complex bone diseases, is almost impossible without considering skeletal and immune systems as an indivisible integrated system.
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Affiliation(s)
- Janja Zupan
- University of Ljubljana, Faculty of Pharmacy, Department of Clinical Biochemistry, Ljubljana, Slovenia
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Yamada K, Yamaguchi M, Asano M, Fujita S, Kobayashi R, Kasai K. Th17-cells in atopic dermatitis stimulate orthodontic root resorption. Oral Dis 2012; 19:683-93. [PMID: 23279451 DOI: 10.1111/odi.12053] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 10/15/2012] [Accepted: 11/25/2012] [Indexed: 12/19/2022]
Abstract
OBJECTIVE The aim of this study was to investigate how atopic dermatitis (AD) contributes to root resorption during orthodontic tooth movement. MATERIALS AND METHODS Atopic dermatitis model mice and wild-type mice were subjected to an excessive orthodontic force (OF) to induce movement of the upper first molars. The expression levels of the tartrate-resistant acid phosphatase (TRAP), IL-17, IL-6, and RANKL proteins were determined in the periodontal ligament (PDL) by an immunohistochemical analysis. Furthermore, the effects of the compression force on co-cultures of CD4(+) cells from AD patients or healthy individuals and human PDL cells were investigated with regard to the levels of secretion and mRNA expression of IL-17, IL-6, RANKL, and osteoprotegerin. RESULTS The immunoreactivities for TRAP, IL-17, IL-6, and RANKL in the AD group were found to be significantly increased. The double immunofluorescence analysis for IL-17/CD4 detected immunoreaction. The secretion of IL-17, IL-6, and RANKL, and the mRNA levels of IL-6 and RANKL in the AD patients were increased compared with those in healthy individuals. CONCLUSION Th17 cells may therefore be associated with the deterioration of root resorption of AD mice, and may explain why AD patients are more susceptible to root resorption than healthy individuals when an excessive OF is applied.
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Affiliation(s)
- K Yamada
- Department of Orthodontics, Nihon University School of Dentistry at Matsudo, Chiba, Japan
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Abstract
The subchondral bone is involved in the pathophysiology of osteoarthritis (OA), both by biochemical and mechanical pathways. Overloaded OA subchondral bone osteoblasts express a pro-angiogenic and pro-inflammatory phenotype which contributes to explain the structural changes (sclerosis and bone marrow lesion) visible in OA subchondral bone. Further, microfractures and conjonctivo-vascular structures constitute exchange routes between bone and the overlying cartilage for mediators produced by osteoblasts. This narrative review describes these physiopathological mechanisms and identifies possible therapeutic targets for pharmacological modalities.
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Affiliation(s)
- Y Henrotin
- Bone and Cartilage Research Unit, University of Liège, 4000, Liège, Belgium.
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50
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Hayashi N, Yamaguchi M, Nakajima R, Utsunomiya T, Yamamoto H, Kasai K. T-helper 17 cells mediate the osteo/odontoclastogenesis induced by excessive orthodontic forces. Oral Dis 2012; 18:375-88. [DOI: 10.1111/j.1601-0825.2011.01886.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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