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Protective effect of Ganoderic acid A on adjuvant-induced arthritis. Immunol Lett 2020; 226:1-6. [PMID: 32565114 DOI: 10.1016/j.imlet.2020.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 05/30/2020] [Accepted: 06/16/2020] [Indexed: 01/20/2023]
Abstract
The purpose of the experiment was to explore the effect of Ganoderic acid A (GAA) on adjuvant-induced arthritis in rats. In this study, the rat model of collagen-induced rheumatoid arthritis (CIA) was established with type II collagen plus Freund's complete adjuvant. Arthritis index, joint pathology, toe swelling, hemorheology, synovial cell apoptosis, related cytokines and JAK3/STAT3 and nuclear factor-κB (NF-κB) signaling pathway were measured in rats. We found that GAA can significantly inhibit the arthritis index, improve joint pathology, reduce toe swelling, improve blood rheology, improve synovial cell apoptosis, and restore related cytokine negative regulation JAK3/STAT3 and NF-κB signaling pathways. In conclusion, GAA has an obvious therapeutic effect on joint inflammation of toes in CIA model rats, which may be due to the regulation of JAK3/STAT3 and NF-κB signaling pathway.
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Robinson LJ, Blair HC, Barnett JB, Soboloff J. The roles of Orai and Stim in bone health and disease. Cell Calcium 2019; 81:51-58. [PMID: 31201955 PMCID: PMC7181067 DOI: 10.1016/j.ceca.2019.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 06/04/2019] [Accepted: 06/04/2019] [Indexed: 01/17/2023]
Abstract
Orai and Stim proteins are the mediators of calcium release-activated calcium signaling and are important in the regulation of bone homeostasis and disease. This includes separate regulatory systems controlling mesenchymal stem cell differentiation to form osteoblasts, which make bone, and differentiation and regulation of osteoclasts, which resorb bone. These systems will be described separately, and their integration and relation to other systems, including Orai and Stim in teeth, will be briefly discussed at the end of this review.
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Affiliation(s)
- Lisa J Robinson
- Department of Pathology, Anatomy, and Laboratory Medicine, West Virginia University School of Medicine, Morgantown WV 26505, United States; Department of Microbiology, Immunology, and Cell Biology, West Virginia University School of Medicine, Morgantown WV 26505, United States.
| | - Harry C Blair
- Veteran's Affairs Medical Center, Pittsburgh PA 15206, United States; Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15261, United States
| | - John B Barnett
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University School of Medicine, Morgantown WV 26505, United States
| | - Jonathan Soboloff
- Fels Institute for Cancer Research and Molecular Biology and the Department of Medical Genetics and Molecular Biochemistry, Temple University School of Medicine, Philadelphia, PA 19140, United States.
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Li Z, Liu T, Gilmore A, Gómez NM, Mitchell CH, Li YP, Oursler MJ, Yang S. Regulator of G Protein Signaling Protein 12 (Rgs12) Controls Mouse Osteoblast Differentiation via Calcium Channel/Oscillation and Gαi-ERK Signaling. J Bone Miner Res 2019; 34:752-764. [PMID: 30489658 PMCID: PMC7675783 DOI: 10.1002/jbmr.3645] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 11/13/2018] [Accepted: 11/17/2018] [Indexed: 12/11/2022]
Abstract
Bone homeostasis intimately relies on the balance between osteoblasts (OBs) and osteoclasts (OCs). Our previous studies have revealed that regulator of G protein signaling protein 12 (Rgs12), the largest protein in the Rgs super family, is essential for osteoclastogenesis from hematopoietic cells and OC precursors. However, how Rgs12 regulates OB differentiation and function is still unknown. To understand that, we generated an OB-targeted Rgs12 conditional knockout (CKO) mice model by crossing Rgs12fl/fl mice with Osterix (Osx)-Cre transgenic mice. We found that Rgs12 was highly expressed in both OB precursor cells (OPCs) and OBs of wild-type (WT) mice, and gradually increased during OB differentiation, whereas Rgs12-CKO mice (OsxCre/+ ; Rgs12fl/fl ) exhibited a dramatic decrease in both trabecular and cortical bone mass, with reduced numbers of OBs and increased apoptotic cell population. Loss of Rgs12 in OPCs in vitro significantly inhibited OB differentiation and the expression of OB marker genes, resulting in suppression of OB maturation and mineralization. Further mechanism study showed that deletion of Rgs12 in OPCs significantly inhibited guanosine triphosphatase (GTPase) activity and cyclic adenosine monophosphate (cAMP) level, and impaired Calcium (Ca2+ ) oscillations via restraints of major Ca2+ entry sources (extracellular Ca2+ influx and intracellular Ca2+ release from endoplasmic reticulum), partially contributed by the blockage of L-type Ca2+ channel mediated Ca2+ influx. Downstream mediator extracellular signal-related protein kinase (ERK) was found inactive in OBs of OsxCre/+ ; Rgs12fl/fl mice and in OPCs after Rgs12 deletion, whereas application of pertussis toxin (PTX) or overexpression of Rgs12 could rescue the defective OB differentiation via restoration of ERK phosphorylation. Our findings reveal that Rgs12 is an important regulator during osteogenesis and highlight Rgs12 as a potential therapeutic target for bone disorders. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Ziqing Li
- Department of Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania Philadelphia, PA 19104, USA
| | - Tongjun Liu
- Department of Oral Biology, School of Dental Medicine, University of Buffalo, State University of New York, Buffalo, NY 14215, USA
- Department of Implantology, Shandong Provincial Key Laboratory of Oral Biomedicine, School of Stomatology, Shandong University
- Department of Stomatology, the Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong province 250000, China
| | - Alyssa Gilmore
- Department of Oral Biology, School of Dental Medicine, University of Buffalo, State University of New York, Buffalo, NY 14215, USA
| | - Néstor Más Gómez
- Department of Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania Philadelphia, PA 19104, USA
| | - Claire H Mitchell
- Department of Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania Philadelphia, PA 19104, USA
- Department of Physiology, School of Medicine, University of Pennsylvania Philadelphia, PA 19104, USA
| | - Yi-ping Li
- Department of Pathology, University of Alabama in Birmingham, Birmingham, AL 35294, USA
| | - Merry J Oursler
- Department of Medicine, Endocrine Research Unit, Mayo Clinic, Rochester, MN 55905, USA
| | - Shuying Yang
- Department of Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania Philadelphia, PA 19104, USA
- The Penn Center for Musculoskeletal Disorders, University of Pennsylvania Philadelphia, PA 19104, USA
- Department of Oral Biology, School of Dental Medicine, University of Buffalo, State University of New York, Buffalo, NY 14215, USA
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Zhao H, Xu H, Zuo Z, Wang G, Liu M, Guo M, Xiao C. Yi Shen Juan Bi Pill Ameliorates Bone Loss and Destruction Induced by Arthritis Through Modulating the Balance of Cytokines Released by Different Subpopulations of T Cells. Front Pharmacol 2018; 9:262. [PMID: 29636683 PMCID: PMC5880890 DOI: 10.3389/fphar.2018.00262] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Accepted: 03/09/2018] [Indexed: 12/21/2022] Open
Abstract
The Yi Shen Juan Bi Pill (YSJB), a traditional Chinese compound herbal drug, has been used as an anti-rheumatic drug in clinical practice. Cartilage and bone destruction of inflamed joints is the hallmark of rheumatoid arthritis (RA). Our previous study suggested that YSJB had a protective effect on joint damage in collagen-induced (CIA) rats. However, the role and the mechanism of YSJB in inflammation-induced bone loss are unavailable. The current study aimed to further evaluate the effect of YSJB on the joint destruction and the systemic bone loss, and to clarify the potential mechanism. CIA model was generated by using collagen II and incomplete Freund's adjuvant in Sprague-Dawley rats. After 4 weeks treatment, arthritic index, tissue pathology, micro-computed tomography scanning (μ-CT), and bone mineral density (BMD) analysis were performed. YSJB decreased arthritic scores and bone destruction; improved the BMD of lumbar vertebrae and bone volume fraction of inflamed joints. Moreover, YSJB significantly decreased the production of serum bone resorption markers, including Tartrate-Resistant Acid Phosphatase (TRACP), N-terminal telopeptide of type I collagen and C-terminal telopeptide of type I collagen. Meanwhile, it increased the level of serum bone formation marker type I collagen N-terminal propeptide. These results revealed that YSJB ameliorated bone destruction and reduced bone loss induced by arthritis. We have previously showed that Tregs inhibited osteoclast differentiation and bone resorption in vitro. Furthermore, others suggested that abnormality of Th1, Th17 may contribute to bone destruction. Here, we showed YSJB significantly up-regulated the percentage of Tregs, while also down-regulated the percentage of Th1 and Th17 cells. Our findings provide the evidence that YSJB ameliorates the severity of disease and joint degradation, and reduces systemic bone loss induced by arthritis. We propose YSJB modulates the balance of T cell phenotype, which affects the activation and differentiation of osteoclasts.
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Affiliation(s)
- Hongyan Zhao
- Experimental Research Center, China Academy of Chinese Medical Science, Beijing, China
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Science, Beijing, China
| | - Huihui Xu
- Experimental Research Center, China Academy of Chinese Medical Science, Beijing, China
| | - Zhengyun Zuo
- Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Gui Wang
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing, China
- Beijing University of Chinese Medicine, Beijing, China
| | - Meijie Liu
- Experimental Research Center, China Academy of Chinese Medical Science, Beijing, China
| | - Minghui Guo
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing, China
- Beijing University of Chinese Medicine, Beijing, China
| | - Cheng Xiao
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing, China
- *Correspondence: Cheng Xiao
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Chen B, Cheng G, Wang H, Feng Y. Increased risk of vertebral fracture in patients with rheumatoid arthritis: A meta-analysis. Medicine (Baltimore) 2016; 95:e5262. [PMID: 27828847 PMCID: PMC5106053 DOI: 10.1097/md.0000000000005262] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 09/29/2016] [Accepted: 09/30/2016] [Indexed: 01/01/2023] Open
Abstract
The relationship between rheumatoid arthritis and risk of vertebral fracture has been reported by several observational studies. However, there is no higher-level evidence study, such as meta-analysis, that has investigated the relationship, and its mechanisms are not yet fully clear. This meta-analysis aimed to provide a summary of an observational study of the relationship between rheumatoid arthritis and the risk of vertebral fractures.Relevant studies were identified by searching PubMed and EMBASE databases (up to August 1, 2016). We included published observational studies (cohort or case-control design) evaluating the relationship between rheumatoid arthritis and the risk of vertebral fractures. Two reviewers searched and abstracted the data independently. Relative risks (RRs) with 95% confidence intervals (CIs) were used throughout the whole analysis.Seven observational studies (2 cohort studies, 2 nested case-control studies, and 3 case-control studies) were included in this meta-analysis. The results showed that the pooled RR of vertebral fracture for individuals with rheumatoid arthritis was 2.34 (95% CI 2.05-2.63, I = 35.4%, P for heterogeneity = 0.16). Further subgroup analysis by sex showed that the pooled RRs for both women and men, and only women were 2.14 (95% CI 1.47-2.8, I = 48.5%, P for heterogeneity = 0.12) and 2.39 (95% CI 2.07-2.70, I = 34%, P for heterogeneity = 0.22), respectively. Subgroup analysis by study design showed that the pooled RRs for cohort studies, nested case-control studies, and case-control studies were 2.31 (95% CI 1.95-2.67, I = 4.8%, P for heterogeneity = 0.31), 1.89 (95% CI 1.01-2.77, I = 72.1%, P for heterogeneity = 0.06), and 2.62 (95% CI 2.04-3.91, I = 26.1%, P for heterogeneity = 0.26), respectively.Based on our meta-analysis, rheumatoid arthritis should be regarded as an independent risk factor of vertebral fracture. Further studies are needed to institute prevention and treatment strategies.
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Affiliation(s)
| | | | | | - Yu Feng
- Department of Orthopedics, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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