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Bellinger DL, Wood C, Wergedal JE, Lorton D. Driving β 2- While Suppressing α-Adrenergic Receptor Activity Suppresses Joint Pathology in Inflammatory Arthritis. Front Immunol 2021; 12:628065. [PMID: 34220796 PMCID: PMC8249812 DOI: 10.3389/fimmu.2021.628065] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 03/05/2021] [Indexed: 12/20/2022] Open
Abstract
Objective Hypersympathetic activity is prominent in rheumatoid arthritis, and major life stressors precede onset in ~80% of patients. These findings and others support a link between stress, the sympathetic nervous system and disease onset and progression. Here, we extend previous research by evaluating how selective peripherally acting α/β2-adrenergic drugs affect joint destruction in adjuvant-induced arthritis. Methods Complete Freund's adjuvant induced inflammatory arthritis in male Lewis rats. Controls received no treatment. Arthritic rats then received vehicle or twice-daily treatment with the α-adrenergic antagonist, phentolamine (0.5 mg/day) and the β2-adrenergic agonist, terbutaline (1200 µg/day, collectively named SH1293) from day (D) of disease onset (D12) through acute (D21) and severe disease (D28). Disease progression was assessed in the hind limbs using dorsoplantar widths, X-ray analysis, micro-computed tomography, and routine histology on D14, D21, and D28 post-immunization. Results On D21, SH1293 significantly attenuated arthritis in the hind limbs, based on reduced lymphocytic infiltration, preservation of cartilage, and bone volume. Pannus formation and sympathetic nerve loss were not affected by SH1293. Bone area and osteoclast number revealed high- and low-treatment-responding groups. In high-responding rats, treatment with SH1293 significantly preserved bone area and decreased osteoclast number, data that correlated with drug-mediated joint preservation. SH1293 suppressed abnormal bone formation based on reduced production of osteophytes. On D28, the arthritic sparing effects of SH1293 on lymphocytic infiltration, cartilage and bone sparing were maintained at the expense of bone marrow adipocity. However, sympathetic nerves were retracted from the talocrural joint. Conclusion and Significance Our findings support a significant delay in early arthritis progression by treatment with SH1293. Targeting sympathetic neurotransmission may provide a strategy to slow disease progression.
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MESH Headings
- Adrenergic alpha-Antagonists/pharmacology
- Adrenergic beta-2 Receptor Agonists/pharmacology
- Animals
- Arthritis, Experimental/chemically induced
- Arthritis, Experimental/metabolism
- Arthritis, Experimental/pathology
- Arthritis, Experimental/prevention & control
- Drug Combinations
- Freund's Adjuvant
- Joints/diagnostic imaging
- Joints/drug effects
- Joints/metabolism
- Joints/pathology
- Male
- Phentolamine/pharmacology
- Rats, Inbred Lew
- Receptors, Adrenergic, alpha/drug effects
- Receptors, Adrenergic, alpha/metabolism
- Receptors, Adrenergic, beta-2/drug effects
- Receptors, Adrenergic, beta-2/metabolism
- Signal Transduction
- Terbutaline/pharmacology
- Rats
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Affiliation(s)
- Denise L. Bellinger
- Department of Human Anatomy and Pathology, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - Carlo Wood
- Department of Human Anatomy and Pathology, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - Jon E. Wergedal
- Musculoskeletal Disease Center, VA Loma Linda Healthcare System, Loma Linda, CA, United States
- Departments of Medicine and Biochemistry, Loma Linda University, Loma Linda, CA, United States
| | - Dianne Lorton
- Hoover Arthritis Research Center, Banner Health Research Institute, Sun City, AZ, United States
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2
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Kamata S, Kimura M, Ohyama S, Yamashita S, Shibukawa Y. Large-Conductance Calcium-Activated Potassium Channels and Voltage-Dependent Sodium Channels in Human Cementoblasts. Front Physiol 2021; 12:634846. [PMID: 33959036 PMCID: PMC8093401 DOI: 10.3389/fphys.2021.634846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 03/17/2021] [Indexed: 12/02/2022] Open
Abstract
Cementum, which is excreted by cementoblasts, provides an attachment site for collagen fibers that connect to the alveolar bone and fix the teeth into the alveolar sockets. Transmembrane ionic signaling, associated with ionic transporters, regulate various physiological processes in a wide variety of cells. However, the properties of the signals generated by plasma membrane ionic channels in cementoblasts have not yet been described in detail. We investigated the biophysical and pharmacological properties of ion channels expressed in human cementoblast (HCEM) cell lines by measuring ionic currents using conventional whole-cell patch-clamp recording. The application of depolarizing voltage steps in 10 mV increments from a holding potential (Vh) of −70 mV evoked outwardly rectifying currents at positive potentials. When intracellular K+ was substituted with an equimolar concentration of Cs+, the outward currents almost disappeared. Using tail current analysis, the contributions of both K+ and background Na+ permeabilities were estimated for the outward currents. Extracellular application of tetraethylammonium chloride (TEA) and iberiotoxin (IbTX) reduced the densities of the outward currents significantly and reversibly, whereas apamin and TRAM-34 had no effect. When the Vh was changed to −100 mV, we observed voltage-dependent inward currents in 30% of the recorded cells. These results suggest that HCEM express TEA- and IbTX-sensitive large-conductance Ca2+-activated K+ channels and voltage-dependent Na+ channels.
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Affiliation(s)
- Satomi Kamata
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan.,Department of Physiology, Tokyo Dental College, Tokyo, Japan
| | - Maki Kimura
- Department of Physiology, Tokyo Dental College, Tokyo, Japan
| | - Sadao Ohyama
- Department of Physiology, Tokyo Dental College, Tokyo, Japan
| | - Shuichiro Yamashita
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan
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Abeynayake N, Arthur A, Gronthos S. Crosstalk between skeletal and neural tissues is critical for skeletal health. Bone 2021; 142:115645. [PMID: 32949783 DOI: 10.1016/j.bone.2020.115645] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/09/2020] [Accepted: 09/10/2020] [Indexed: 12/24/2022]
Abstract
Emerging evidence in the literature describes a physical and functional association between the neural and skeletal systems that forms a neuro-osteogenic network. This communication between bone cells and neural tissues within the skeleton is important in facilitating bone skeletal growth, homeostasis and repair. The growth and repair of the skeleton is dependent on correct neural innervation for correct skeletal developmental growth and fracture repair, while pathological conditions such as osteoporosis are accelerated by disruptions to sympathetic innervation. To date, different molecular mechanisms have been reported to mediate communication between bone and neural populations. This review highlights the important role of various cell surface receptors, cytokines and associated ligands as potential regulators of skeletal development, homeostasis, and repair, by mediating interactions between the skeletal and nervous systems. Specifically, this review describes how Bone Morphogenetic Proteins (BMPs), Eph/ephrin, Chemokine CXCL12, Calcitonin Gene-related Peptide (CGRP), Netrins, Neurotrophins (NTs), Slit/Robo and the Semaphorins (Semas) contribute to the cross talk between bone cells and peripheral nerves, and the importance of these interactions in maintaining skeletal health.
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Affiliation(s)
- Nethmi Abeynayake
- Mesenchymal Stem Cell Laboratory, Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, SA, Australia; Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
| | - Agnieszka Arthur
- Mesenchymal Stem Cell Laboratory, Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, SA, Australia; Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
| | - Stan Gronthos
- Mesenchymal Stem Cell Laboratory, Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, SA, Australia; Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia.
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Nerve electrical stimulation enhances osseointegration of implants in the beagle. Sci Rep 2019; 9:4916. [PMID: 30894667 PMCID: PMC6427028 DOI: 10.1038/s41598-019-41471-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 03/08/2019] [Indexed: 01/23/2023] Open
Abstract
Dental implantation has been the primary method for the treatment of tooth loss, but longer than 3 months healing times are generally required. Because immediate load implants are suitable only for certain categories of implant patients, it has value to develop a novel method to facilitate the implant-bone osseointegration process. Cylindrical titanium implants were implanted in the tooth sockets of beagles, and microelectrode stimulation of the sympathetic nerves in the infraorbital nerve was performed after implantation for 1 week. The authors found that one-sided nerve stimulation was shown to evoke consistent electric potential changes in both sides of the infraorbital nerves. Moreover, after 4 weeks of implantation, more new bone was clearly observed around the implants in the beagles that received electrical stimulation treatment than was observed in the control animals. Furthermore, a higher mineralization density was measured in the new peri-implant bone tissues of the stimulated beagles when compared to controls. These results demonstrate that the simple and safe physical method of microelectrode stimulation to sympathetic nerves can promote the formation of new bone and the osseointegration of implants. This technique is worth promoting and has the potential to reduce the healing time of dental implantation in future clinical cases.
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5
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Qiao Y, Wang Y, Zhou Y, Jiang F, Huang T, Chen L, Lan J, Yang C, Guo Y, Yan S, Wei Z, Li J. The role of nervous system in adaptive response of bone to mechanical loading. J Cell Physiol 2018; 234:7771-7780. [PMID: 30414185 DOI: 10.1002/jcp.27683] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Accepted: 10/09/2018] [Indexed: 02/05/2023]
Abstract
Bone tissue is remodeled through the catabolic function of the osteoclasts and the anabolic function of the osteoblasts. The process of bone homeostasis and metabolism has been identified to be co-ordinated with several local and systemic factors, of which mechanical stimulation acts as an important regulator. Very recent studies have shown a mutual effect between bone and other organs, which means bone influences the activity of other organs and is also influenced by other organs and systems of the body, especially the nervous system. With the discovery of neuropeptide (calcitonin gene-related peptide, vasoactive intestinal peptide, substance P, and neuropeptide Y) and neurotransmitter in bone and the adrenergic receptor observed in osteoclasts and osteoblasts, the function of peripheral nervous system including sympathetic and sensor nerves in bone resorption and its reaction to on osteoclasts and osteoblasts under mechanical stimulus cannot be ignored. Taken together, bone tissue is not only the mechanical transmitter, but as well the receptor of neural system under mechanical loading. This review aims to summarize the relationship among bone, nervous system, and mechanotransduction.
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Affiliation(s)
- Yini Qiao
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Yang Wang
- Department of Oral Radiology, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Yimei Zhou
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Fulin Jiang
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Tu Huang
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Liujing Chen
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Jingxiang Lan
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Cai Yang
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Yutong Guo
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Shanyu Yan
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Zhangming Wei
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
| | - Juan Li
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, China
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6
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Dorsal Root Ganglion Maintains Stemness of Bone Marrow Mesenchymal Stem Cells by Enhancing Autophagy through the AMPK/mTOR Pathway in a Coculture System. Stem Cells Int 2018; 2018:8478953. [PMID: 30363977 PMCID: PMC6186314 DOI: 10.1155/2018/8478953] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 07/10/2018] [Accepted: 08/14/2018] [Indexed: 12/28/2022] Open
Abstract
Our previous studies found that sensory nerve tracts implanted in tissue-engineered bone (TEB) could result in better osteogenesis. To explore the mechanism of the sensory nerve promoting osteogenesis in TEB in vitro, a transwell coculture experiment was designed between dorsal root ganglion (DRG) cells and bone marrow mesenchymal stem cells (BMSCs). BMSC proliferation was determined by CCK8 assay, and osteo-, chondro-, and adipogenic differentiation were assessed by alizarin red, alcian blue, and oil red staining. We found that the proliferation and multipotent differentiation of BMSCs were all enhanced in the coculture group compared to the BMSCs group. Crystal violet staining showed that the clone-forming ability of BMSCs in the coculture group was also enhanced and mRNA levels of Sox2, Nanog, and Oct4 were significantly upregulated in the coculture group. Moreover, the autophagy level of BMSCs, regulating their stemness, was promoted in the coculture group, mediated by the AMPK/mTOR pathway. In addition, AMPK inhibitor compound C could significantly downregulate the protein expression of LC3 and the mRNA level of stemness genes in the coculture group. Finally, we found that the NK1 receptor antagonist, aprepitant, could partly block this effect, which indicated that substance P played an important role in the effect. Together, we conclude that DRG could maintain the stemness of BMSCs by enhancing autophagy through the AMPK/mTOR pathway in a transwell coculture system, which may help explain the better osteogenesis after implantation of the sensory nerve into TEB.
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7
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Milovanović P, Đurić M. Innervation of bones: Why it should not be neglected? MEDICINSKI PODMLADAK 2018. [DOI: 10.5937/mp69-18404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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8
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Silva DI, Santos BPD, Leng J, Oliveira H, Amédée J. Dorsal root ganglion neurons regulate the transcriptional and translational programs of osteoblast differentiation in a microfluidic platform. Cell Death Dis 2017; 8:3209. [PMID: 29238079 PMCID: PMC5870602 DOI: 10.1038/s41419-017-0034-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 09/28/2017] [Accepted: 10/02/2017] [Indexed: 11/17/2022]
Abstract
Innervation by the sensory nervous system plays a key role in skeletal development and in orchestration of bone remodeling and regeneration. However, it is unclear how and in which bone cells can sensory nerves act to control these processes. Here, we show a microfluidic coculture system comprising dorsal root ganglion (DRG) neurons and mesenchymal stem cells (MSCs) that more faithfully represents the in vivo scenario of bone sensory innervation. We report that DRG neurons promote the osteogenic differentiation capacity of MSCs, by mediating the increase of alkaline phosphatase activity and the upregulation of osteoblast-specific genes. Furthermore, we show that DRG neurons have a positive impact on Cx43 levels in MSCs during osteoblastogenesis, especially at an early stage of this process. Conversely, we described a negative impact of DRG neurons on MSCs N-cadherin expression at a later stage. Finally, we demonstrate a cytoplasmic accumulation of β-catenin translocation into the nucleus, and subsequently Lymphoid Enhancer Binding Factor 1—responsive transcriptional activation of downstream genes in cocultured MSCs. Together, our study provides a robust body of evidence that the direct interaction of DRG neurons with MSCs in a bone-like microenvironment leads to an enhancement of osteoblast differentiation potential of MSCs. The osteogenic effect of DRG neurons on MSCs is mediated through the regulation of Cx43 and N-cadherin expression and activation of the canonical/β-catenin Wnt signaling pathway.
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Affiliation(s)
- Diana Isabel Silva
- Tissue Bioengineering, University of Bordeaux, U1026, 33076, Bordeaux, France. .,Tissue Bioengineering, INSERM, U1026, 33076, Bordeaux, France.
| | - Bruno Paiva Dos Santos
- Tissue Bioengineering, University of Bordeaux, U1026, 33076, Bordeaux, France.,Tissue Bioengineering, INSERM, U1026, 33076, Bordeaux, France
| | - Jacques Leng
- University of Bordeaux, LOF, UMR5258, 33600, Pessac, France.,CNRS, LOF, UMR5258, 33600, Pessac, France.,Solvay, LOF, UMR5258, 33600, Pessac, France
| | - Hugo Oliveira
- Tissue Bioengineering, University of Bordeaux, U1026, 33076, Bordeaux, France.,Tissue Bioengineering, INSERM, U1026, 33076, Bordeaux, France
| | - Joëlle Amédée
- Tissue Bioengineering, University of Bordeaux, U1026, 33076, Bordeaux, France.,Tissue Bioengineering, INSERM, U1026, 33076, Bordeaux, France
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9
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Kodama D, Hirai T, Kondo H, Hamamura K, Togari A. Bidirectional communication between sensory neurons and osteoblasts in an in vitro coculture system. FEBS Lett 2017; 591:527-539. [PMID: 28094440 DOI: 10.1002/1873-3468.12561] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 12/30/2016] [Accepted: 01/11/2017] [Indexed: 12/18/2022]
Abstract
Recent studies have revealed that the sensory nervous system is involved in bone metabolism. However, the mechanism of communication between neurons and osteoblasts is yet to be elucidated. In this study, we investigated the signaling pathways between sensory neurons of the dorsal root ganglion (DRG) and the osteoblast-like MC3T3-E1 cells using an in vitro coculture system. Our findings indicate that signal transduction from DRG-derived neurons to MC3T3-E1 cells is suppressed by antagonists of the AMPA receptor and the NK1 receptor. Conversely, signal transduction from MC3T3-E1 cells to DRG-derived neurons is suppressed by a P2X7 receptor antagonist. Our results suggest that these cells communicate with each other by exocytosis of glutamate, substance P in the efferent signal, and ATP in the afferent signal.
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Affiliation(s)
- Daisuke Kodama
- Laboratory of Neuropharmacology, School of Pharmacy, Aichi-Gakuin University, Chikusa-ku, Nagoya, Japan.,Department of Pharmacology, School of Dentistry, Aichi-Gakuin University, Chikusa-ku, Nagoya, Japan
| | - Takao Hirai
- Laboratory of Medicinal Resources, School of Pharmacy, Aichi-Gakuin University, Chikusa-ku, Nagoya, Japan
| | - Hisataka Kondo
- Department of Pharmacology, School of Dentistry, Aichi-Gakuin University, Chikusa-ku, Nagoya, Japan
| | - Kazunori Hamamura
- Department of Pharmacology, School of Dentistry, Aichi-Gakuin University, Chikusa-ku, Nagoya, Japan
| | - Akifumi Togari
- Department of Pharmacology, School of Dentistry, Aichi-Gakuin University, Chikusa-ku, Nagoya, Japan
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Yao Q, Liang H, Huang B, Xiang L, Wang T, Xiong Y, Yang B, Guo Y, Gong P. Beta-adrenergic signaling affect osteoclastogenesis via osteocytic MLO-Y4 cells' RANKL production. Biochem Biophys Res Commun 2016; 488:634-640. [PMID: 27823934 DOI: 10.1016/j.bbrc.2016.11.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 11/03/2016] [Indexed: 02/05/2023]
Abstract
The sympathetic nervous system play a pivotal role in bone remodeling through β-adrenoceptor (β-AR). However, it is not well documented whether the β-adrenoceptor pathway has the potential to influence osteocytes. In this study, cell viability, the expression of β-AR subtypes, enzymes of catecholamine synthesis or degradation, bone-related gene and protein in osteocytic MLO-Y4 cells were investigated by β-adrenergic stimulation. Isoproterenol (ISO) promoted RANKL to OPG expression in osteocytes, as well as osteoclasts formation in osteocytes-RAW264.7 cell co-cultures but not RAW264.7 cell monoculture. The ISO-stimulated effect was enhanced in β1-AR antagonist pretreatment, but was rescued by blocking β2-AR. The results indicate that β1-and β2-AR play reciprocal roles on MLO-Y4 cells in the regulation of osteoclastogenesis, and osteocyte β-adrenergic signaling might be a new valuable therapy for bone disease.
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Affiliation(s)
- Qianqian Yao
- Oral Medical Center, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hengxing Liang
- Department of Thoracic Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Bo Huang
- Dental Implant Center, West China Hospital of Stomatology, Sichuan University, Chengdu, China; State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Lin Xiang
- Dental Implant Center, West China Hospital of Stomatology, Sichuan University, Chengdu, China; State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Tianlu Wang
- Dental Implant Center, West China Hospital of Stomatology, Sichuan University, Chengdu, China; State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yi Xiong
- Dental Implant Center, West China Hospital of Stomatology, Sichuan University, Chengdu, China; State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bo Yang
- Dental Implant Center, West China Hospital of Stomatology, Sichuan University, Chengdu, China; State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yanjun Guo
- Dental Implant Center, West China Hospital of Stomatology, Sichuan University, Chengdu, China; State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ping Gong
- Dental Implant Center, West China Hospital of Stomatology, Sichuan University, Chengdu, China; State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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11
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Tanaka K, Hirai T, Kodama D, Kondo H, Hamamura K, Togari A. α1B -Adrenoceptor signalling regulates bone formation through the up-regulation of CCAAT/enhancer-binding protein δ expression in osteoblasts. Br J Pharmacol 2016; 173:1058-69. [PMID: 26750808 DOI: 10.1111/bph.13418] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 12/03/2015] [Accepted: 12/21/2015] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND AND PURPOSE The sympathetic nervous system regulates bone remodelling, in part, through ß2 -adrenoceptor signalling. However, the physiological role of α1 -adrenoceptor signalling in bone in vivo remains unclear. Therefore, to obtain a deeper understanding of bone remodelling by the sympathetic nervous system, we investigated the role of α1B -adrenoceptor signalling in bone metabolism. EXPERIMENTAL APPROACH Prazosin, a nonspecific α1 -adrenoceptor antagonist, was administered for 2 weeks in C57BL6 mice, and efficacy was evaluated by bone microarchitecture using microcomputed tomography and determination of bone formation by fluorescent labelling of bone. We also compared the bone phenotype of α1B -adrenoceptor null mice (α1B (-/-) ) with that of wild-type littermates. KEY RESULTS We demonstrated that the systemic administration of prazosin decreased bone formation. In addition, α1B -adrenoceptor-deficient mice had a lower bone mass due to decreased bone formation but did not exhibit any changes in bone-resorbing activity. Furthermore, stimulation with phenylephrine, a non-specific α1 -adrenoceptor agonist, increased the expression of the transcriptional factor CCAAT/enhancer-binding protein δ (Cebpd) in MC3T3-E1 osteoblastic cells. The overexpression of Cebpd induced cellular proliferation in MC3T3-E1 cells, whereas the silencing of Cebpd suppressed it. CONCLUSIONS AND IMPLICATIONS Taken together, these results suggested that α1B -adrenoceptor signalling is required for bone formation and regulated cellular proliferation through a mechanism relevant to the up-regulation of Cebpd in osteoblasts and, thus, provide new evidence for the physiological importance of α1B -adrenoceptor signalling in bone homeostasis.
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Affiliation(s)
- Kenjiro Tanaka
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University, Nagoya, 464-8650, Japan
| | - Takao Hirai
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University, Nagoya, 464-8650, Japan
| | - Daisuke Kodama
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University, Nagoya, 464-8650, Japan
| | - Hisataka Kondo
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University, Nagoya, 464-8650, Japan
| | - Kazunori Hamamura
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University, Nagoya, 464-8650, Japan
| | - Akifumi Togari
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University, Nagoya, 464-8650, Japan
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12
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Togari A, Kondo H, Hirai T, Kodama D, Arai M, Goto S. [Regulation of bone metabolism by sympathetic nervous system]. Nihon Yakurigaku Zasshi 2015; 145:140-145. [PMID: 25765496 DOI: 10.1254/fpj.145.140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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13
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Kodama D, Togari A. Signaling pathway and physiological role of the alpha-1 adrenergic receptor in human osteoblasts. J Oral Biosci 2014. [DOI: 10.1016/j.job.2014.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Neto E, Alves CJ, Sousa DM, Alencastre IS, Lourenço AH, Leitão L, Ryu HR, Jeon NL, Fernandes R, Aguiar P, Almeida RD, Lamghari M. Sensory neurons and osteoblasts: close partners in a microfluidic platform. Integr Biol (Camb) 2014; 6:586-95. [DOI: 10.1039/c4ib00035h] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We presented a microfluidic-based coculture system as a new tool to be explored for modeling biological processes and pharmacological screening concerning peripheral tissues innervation.
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Affiliation(s)
- Estrela Neto
- INEB – Instituto de Engenharia Biomédica
- 823 4150-180 Porto, Portugal
- FMUP – Faculdade de Medicina da Universidade do Porto
- Porto, Portugal
| | - Cecília J. Alves
- INEB – Instituto de Engenharia Biomédica
- 823 4150-180 Porto, Portugal
| | - Daniela M. Sousa
- INEB – Instituto de Engenharia Biomédica
- 823 4150-180 Porto, Portugal
| | | | - Ana H. Lourenço
- INEB – Instituto de Engenharia Biomédica
- 823 4150-180 Porto, Portugal
| | - Luís Leitão
- IBMC – Instituto de Biologia Molecular e Celular
- Universidade do Porto
- Porto, Portugal
| | - Hyun R. Ryu
- WCU Multiscale Mechanical Design
- Seoul National University
- Seoul, Korea
| | - Noo L. Jeon
- WCU Multiscale Mechanical Design
- Seoul National University
- Seoul, Korea
- School of Mechanical and Aerospace Engineering
- Seoul National University
| | - Rui Fernandes
- IBMC – Instituto de Biologia Molecular e Celular
- Universidade do Porto
- Porto, Portugal
| | - Paulo Aguiar
- Centro de Matemática da Universidade do Porto
- Porto, Portugal
| | - Ramiro D. Almeida
- CNC – Center for Neuroscience and Cell Biology
- Department of Life Sciences
- University of Coimbra
- Coimbra, Portugal
| | - Meriem Lamghari
- INEB – Instituto de Engenharia Biomédica
- 823 4150-180 Porto, Portugal
- ICBAS – Instituto de Ciências Biomédicas Abel Salazar
- Universidade do Porto
- Porto, Portugal
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15
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He JY, Zheng XF, Jiang SD, Chen XD, Jiang LS. Sympathetic neuron can promote osteoblast differentiation through BMP signaling pathway. Cell Signal 2013; 25:1372-8. [DOI: 10.1016/j.cellsig.2013.02.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 02/09/2013] [Indexed: 12/30/2022]
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16
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The neuro-osteogenic network: The sympathetic regulation of bone resorption. JAPANESE DENTAL SCIENCE REVIEW 2012. [DOI: 10.1016/j.jdsr.2011.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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17
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Ma Y, Wu X, Li X, Fu J, Shen J, Li X, Wang H. Corticosterone regulates the expression of neuropeptide Y and reelin in MLO-Y4 cells. Mol Cells 2012; 33:611-6. [PMID: 22610366 PMCID: PMC3887760 DOI: 10.1007/s10059-012-0053-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 04/18/2012] [Accepted: 04/19/2012] [Indexed: 12/13/2022] Open
Abstract
Osteocytes that have a dendritic appearance are widely believed to form a complex cellular network system and play crucial roles in mechanotransduction as a principal bone mechanosensor, which is the basis of their neuronallike biology, as previously reported. Neuropeptide Y (NPY) and reelin mRNA, which are brain-specific neurogenic markers, have been identified in osteocytes. However, changes in the production of NPY and reelin in response to specific biochemical stimulation are unknown. In this study, we investigated the in vitro effect of corticosterone, one of the endogenous glucocorticoids, on the expression of NPY and reelin in the MLO-Y4 osteocyte cell line. Cells were treated with corticosterone at different concentrations (10(-9) M-10(-5) M) for 1, 3, 6, 12 and 24 h. As revealed, corticosterone reduced the MLO-Y4 cell viability and proliferation in a dose- and time-dependent manner based on an MTT assay and a Vi-CELL analyzer. The cells were then incubated with corticosterone (10(-6) μM), and the NPY and reelin expression levels were detected at 1, 3, 6, 12 and 24 h using real-time PCR and Western blot analysis. These results demonstrated that at the gene and the protein levels, corticosterone significantly upregulated the NPY and reelin expression in a time-dependent manner. The application of a glucocorticoid receptor antagonist, RU486, reversed the reduced cell viability and the increased expression of NPY and reelin that were caused by corticosterone. To the best of our knowledge, this is the first report to verify that corticosterone regulates the NPY and reelin expression in osteocytes.
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Affiliation(s)
- Yuanyuan Ma
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041,
China
- Department of Prosthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041,
China
| | - Xiangnan Wu
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041,
China
- Department of Prosthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041,
China
| | - Xianxian Li
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041,
China
- Department of Prosthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041,
China
| | - Jing Fu
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041,
China
- Department of Prosthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041,
China
| | - Jiefei Shen
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041,
China
- Department of Prosthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041,
China
| | - Xiaoyu Li
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041,
China
| | - Hang Wang
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041,
China
- Department of Prosthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041,
China
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18
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Furuno T, Nakanishi M. Analysis of neuroimmune interactions by an in vitro coculture approach. Methods Mol Biol 2012; 789:171-80. [PMID: 21922407 DOI: 10.1007/978-1-61779-310-3_10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Nerve fibers innervate every organ of the body and are involved in monitoring changes of the external and internal environment. Innervation directly controls a variety of physiological responses in an adaptive manner. Today, many lines of research indicate that also the immunological response is influenced by the nervous system and that nerve and immune cells directly interact through intercellular signal transduction by cytokines, neurotransmitters, and neuropeptides. For instance, mast cells are often found in close proximity of nerve fibers containing substance P and calcitonin gene-related peptide, two widely studied sensory neuropeptides, in a variety of tissues. To investigate the molecular mechanism of the direct functional interplay between nerve and immune cells, we have studied their communication using an in vitro coculture system and confocal microscopy. Here, we introduce methods for the in vitro coculture of nerve and immune cells and the imaging analysis of cellular activation, and discuss soluble mediators and adhesion molecules involved in the neuroimmune interaction. Improvement of our understanding of neuropeptide functions on these issues would lead to new therapeutic modalities for diseases based on neuroimmune interaction such as neurogenic inflammation, intestinal bowel diseases, asthma, and autoimmune disorders.
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19
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Komoto S, Kondo H, Fukuta O, Togari A. Comparison of β-adrenergic and glucocorticoid signaling on clock gene and osteoblast-related gene expressions in human osteoblast. Chronobiol Int 2012; 29:66-74. [PMID: 22217103 DOI: 10.3109/07420528.2011.636496] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Most living organisms exhibit circadian rhythms that are generated by endogenous circadian clocks, the master one being present in the suprachiasmatic nuclei (SCN). Output signals from the SCN are believed to transmit standard circadian time to peripheral tissue through sympathetic nervous system and humoral routes. Therefore, the authors examined the expression of clock genes following treatment with the β-adrenergic receptor agonist, isoprenaline, or the synthetic glucocorticoid, dexamethasone, in cultured human osteoblast SaM-1 cells. Cells were treated with 10(-6) M isoprenaline or 10(-7) M dexamethasone for 2 h and gene expressions were determined using real-time polymerase chain reaction (PCR) analysis. Treatment with isoprenaline or dexamethasone induced the circadian expression of clock genes human period 1 (hPer1), hPer2, hPer3, and human brain and muscle Arnt-like protein 1 (hBMAL1). Isoprenaline or dexamethasone treatment immediately increased hPer1 and hPer2 and caused circadian oscillation of hPer1 and hPer2 with three peaks within 48 h. hPer3 expression had one peak after isoprenaline or dexamethasone treatment. hBMAL expression had two peaks after isoprenaline or dexamethasone treatment, the temporal pattern being in antiphase to that of the other clock genes. Dexamethasone treatment delayed the oscillation of all clock genes for 2-6 h compared with isoprenaline treatment. The authors also examined the expression of osteoblast-related genes hα-1 type I collagen (hCol1a1), halkaline phosphatase (hALP), and hosteocalcin (hOC). Isoprenaline induced oscillation of hCol1a1, but not hALP and hOC. On the other hand, dexamethasone induced oscillation of hCol1a1 and hALP, but not hOC. Isoprenaline up-regulated hCol1a1 expression, but dexamethasone down-regulated hCol1a1 and hALP expression in the first phase.
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Affiliation(s)
- Shintaro Komoto
- Department of Pharmacology, School of Dentistry, Aichi-Gakuin University, Chikusa-ku, Nagoya, Japan
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20
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Asada K, Obata K, Horiguchi K, Takaki M. Age-related changes in afferent responses in sensory neurons to mechanical stimulation of osteoblasts in coculture system. Am J Physiol Cell Physiol 2011; 302:C757-65. [PMID: 22094334 DOI: 10.1152/ajpcell.00362.2011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bone homeostasis is regulated by mechanical stimulation (MS). The sensory mechanism of bone tissue for MS remains unknown in the maintenance of bone homeostasis. We aimed to investigate the sensory mechanism from osteoblasts to sensory neurons in a coculture system by MS of osteoblasts. Primary sensory neurons isolated from dorsal root ganglia (DRG) of neonatal, juvenile, and adult mice and osteoblasts isolated from calvaria of neonatal mice were cocultured for 24 h. The responses in DRG neurons elicited by MS of osteoblasts with a glass micropipette were detected by increases in intracellular Ca(2+) concentration ([Ca(2+)](i)) with fluo 3-AM. In all developmental stages mice, [Ca(2+)](i)-increasing responses in osteoblasts were promptly elicited by MS. After a short delay, [Ca(2+)](i)-increasing responses were observed in neurites of DRG neurons. The osteoblastic response to second MS was largely attenuated by a stretch-activated Ca(2+) channel blocker, gadolinium. The increases of [Ca(2+)](i) in DRG neurons were abolished by a P2 receptor antagonist; suramin, a P2X receptor antagonist, pyridoxal-phosphate-6-azophenyl-2',4'-disulfonate; and an ATP-hydrolyzing enzyme, apyrase. Satellite cells were found around DRG neurons in cocultured cells of only neonatal and juvenile mice. After satellite cells were removed, excessive abnormal responses to MS of osteoblasts were observed in neonatal neurites with unchanged osteoblast responses. The present study indicated that MS of bone tissue elicited afferent P2X receptor-mediated purinergic transmission to sensory neurons in all stages mice. This transmission is modulated by satellite cells, which may have protective actions on sensory neurons.
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Affiliation(s)
- Keiji Asada
- Dept. of Physiology II, Nara Medical Univ., Kashihara, Nara, Japan
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21
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Modulation of potassium channels via the α1B-adrenergic receptor in human osteoblasts. Neurosci Lett 2010; 485:102-6. [DOI: 10.1016/j.neulet.2010.08.073] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2010] [Revised: 08/11/2010] [Accepted: 08/25/2010] [Indexed: 12/29/2022]
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22
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Suga S, Goto S, Togari A. Demonstration of direct neurite-osteoclastic cell communication in vitro via the adrenergic receptor. J Pharmacol Sci 2010; 112:184-91. [PMID: 20093791 DOI: 10.1254/jphs.09283fp] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
There is currently great interest in the bone metabolism induced by the sympathetic nerve system. Recently, direct neurite-osteoblastic cell communication was demonstrated using an in vitro co-culture model comprising neurite-sprouting murine superior cervical ganglia and MC3T3-E1 osteoblast-like cells. In the present study, we examined whether the direct nerve-osteoclastic cell communication was present in an in vitro co-culture model comprising cultured murine superior cervical ganglia and mouse osteoclast-like cells. RAW264.7 cells treated with receptor activator of NF-kappaB ligand were used as osteoclast-like cells. We found that the addition of scorpion venom (SV) elicited neurite activation via intracellular Ca(2+) mobilization and, after a lag period, osteoclastic Ca(2+) mobilization in the co-culture. SV did not have any direct effect on the osteoclastic cells in the absence of the neurites. The addition of an alpha(1)-adrenergic receptor (AR) antagonist, prazosin, concentration-dependently prevented the osteoclastic activation that resulted as a consequence of neural activation by SV. We also found that alpha(1)-adrenergic receptor agonists evoked transient Ca(2+) mobilization and gene expression of interleukin-6 in osteoclastic cells. These results demonstrate that osteoclastic activation occurs via alpha(1)-AR in osteoclastic cells as a direct response to neuronal activation.
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Affiliation(s)
- Satoko Suga
- Department of Pharmacology, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan
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