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Zhu X, Du L, Zhang L, Ding L, Xu W, Lin X. The critical role of toll-like receptor 4 in bone remodeling of osteoporosis: from inflammation recognition to immunity. Front Immunol 2024; 15:1333086. [PMID: 38504994 PMCID: PMC10948547 DOI: 10.3389/fimmu.2024.1333086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 02/20/2024] [Indexed: 03/21/2024] Open
Abstract
Osteoporosis is a common chronic metabolic bone disorder. Recently, increasing numbers of studies have demonstrated that Toll-like receptor 4 (TLR4, a receptor located on the surface of osteoclasts and osteoblasts) plays a pivotal role in the development of osteoporosis. Herein, we performed a comprehensive review to summarize the findings from the relevant studies within this topic. Clinical data showed that TLR4 polymorphisms and aberrant TLR4 expression have been associated with the clinical significance of osteoporosis. Mechanistically, dysregulation of osteoblasts and osteoclasts induced by abnormal expression of TLR4 is the main molecular mechanism underlying the pathological processes of osteoporosis, which may be associated with the interactions between TLR4 and NF-κB pathway, proinflammatory effects, ncRNAs, and RUNX2. In vivo and in vitro studies demonstrate that many promising substances or agents (i.e., methionine, dioscin, miR-1906 mimic, artesunate, AEG-1 deletion, patchouli alcohol, and Bacteroides vulgatus) have been able to improve bone metabolism (i.e., inhibits bone resorption and promotes bone formation), which may partially attribute to the inhibition of TLR4 expression. The present review highlights the important role of TLR4 in the clinical significance and the pathogenesis of osteoporosis from the aspects of inflammation and immunity. Future therapeutic strategies targeting TLR4 may provide a new insight for osteoporosis treatment.
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Affiliation(s)
- Xianping Zhu
- Department of Orthopedics, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, Zhejiang, China
| | - Li Du
- Educational Administration Department, Chongqing University Cancer Hospital, Chongqing, China
| | - Lai Zhang
- Department of Orthopedics, Taizhou Municipal Hospital, Taizhou, Zhejiang, China
| | - Lingzhi Ding
- Department of Orthopedics, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, Zhejiang, China
| | - Weifang Xu
- Department of Orthopedics, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, Zhejiang, China
| | - Xuezheng Lin
- Department of Anesthesia Surgery, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
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2
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Zhou RX, Zhang YW, Cao MM, Liu CH, Rui YF, Li YJ. Linking the relation between gut microbiota and glucocorticoid-induced osteoporosis. J Bone Miner Metab 2023; 41:145-162. [PMID: 36912997 PMCID: PMC10010237 DOI: 10.1007/s00774-023-01415-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 02/27/2023] [Indexed: 03/14/2023]
Abstract
Osteoporosis (OP) is the most prevalent metabolic bone disease, characterized by the low bone mass and microarchitectural deterioration of bone tissue. Glucocorticoid (GC) clinically acts as one of the anti-inflammatory, immune-modulating, and therapeutic drugs, whereas the long-term use of GC may cause rapid bone resorption, followed by prolonged and profound suppression of bone formation, resulting in the GC-induced OP (GIOP). GIOP ranks the first among secondary OP and is a pivotal risk for fracture, as well as high disability rate and mortality, at both societal and personal levels, vital costs. Gut microbiota (GM), known as the "second gene pool" of human body, is highly correlated with maintaining the bone mass and bone quality, and the relation between GM and bone metabolism has gradually become a research hotspot. Herein, combined with recent studies and based on the cross-linking relationship between GM and OP, this review is aimed to discuss the potential mechanisms of GM and its metabolites on the OP, as well as the moderating effects of GC on GM, thereby providing an emerging thought for prevention and treatment of GIOP.
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Affiliation(s)
- Rui-Xin Zhou
- School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Yuan-Wei Zhang
- School of Medicine, Southeast University, Nanjing, Jiangsu, China
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing , Jiangsu, China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, China
| | - Mu-Min Cao
- School of Medicine, Southeast University, Nanjing, Jiangsu, China
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing , Jiangsu, China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, China
| | - Cun-Hao Liu
- School of Architecture, Southeast University, Nanjing, Jiangsu, China
| | - Yun-Feng Rui
- School of Medicine, Southeast University, Nanjing, Jiangsu, China
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing , Jiangsu, China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, China
| | - Ying-Juan Li
- Department of Geriatrics, Zhongda Hospital, School of Medicine, Southeast University, No. 87 Ding Jia Qiao, Nanjing, 210009, Jiangsu, People's Republic of China.
- School of Medicine, Southeast University, Nanjing, Jiangsu, China.
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Salamanna F, Contartese D, Veronesi F, Martini L, Fini M. Osteoporosis Preclinical Research: A Systematic Review on Comparative Studies Using Ovariectomized Sheep. Int J Mol Sci 2022; 23:ijms23168904. [PMID: 36012173 PMCID: PMC9408715 DOI: 10.3390/ijms23168904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/05/2022] [Accepted: 08/08/2022] [Indexed: 11/16/2022] Open
Abstract
Sheep ovariectomy (OVX) alone or associated to steroid therapy, deficient diet, or hypothalamic–pituitary disconnection has proven to be of critical importance for osteoporosis research in orthopedics. However, the impact of specific variables, such as breed, age, diet, time after OVX, and other variables, should be monitored. Thus, the design of comparative studies is mandatory to minimize the impact of these variables or to recognize the presence of unwanted variables as well as to better characterize bone remodeling in this model. Herein, we conducted a systematic review of the last 10 years on PubMed, Scopus, and Web of Knowledge considering only studies on OVX sheep where a control group was present. Of the 123 records screened, 18 studies were included and analyzed. Results showed that (i) Merino sheep are the most exploited breed; (ii) 5–6 years of age is the most used time for inducing OVX; (iii) ventral midline laparotomy is the most common approach to induce OVX; (iv) OVX associated to steroid therapy is the most widely used osteoporosis model; and (v) success of OVX was mostly verified 12 months after surgery. In detail, starting from 12 months after OVX a significant decline in bone mineral density and in microarchitectural bone parameters as well as in biochemical markers were detected in all studies in comparison to control groups. Bone alteration was also site-specific on a pattern as follows: lumbar vertebra, femoral neck, and ribs. Before 12 months from OVX and starting from 3–5 months, microarchitectural bone changes and biochemical marker alterations were present when osteoporosis was induced by OVX associated to steroid therapy. In conclusion, OVX in sheep influence bone metabolism causing pronounced systemic bone loss and structural deterioration comparable to the situation found in osteoporosis patients. Data for treating osteoporosis patients are based not only on good planning and study design but also on a correct animal use that, as suggested by 3Rs principles and by ARRIVE guidelines, includes the use of control groups to be directly contrasted with the experimental group.
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Affiliation(s)
- Francesca Salamanna
- Complex Structure Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Deyanira Contartese
- Complex Structure Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Francesca Veronesi
- Complex Structure Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
- Correspondence:
| | - Lucia Martini
- Complex Structure Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Milena Fini
- Scientific Direction, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
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Cheng CH, Chen LR, Chen KH. Osteoporosis Due to Hormone Imbalance: An Overview of the Effects of Estrogen Deficiency and Glucocorticoid Overuse on Bone Turnover. Int J Mol Sci 2022; 23:ijms23031376. [PMID: 35163300 PMCID: PMC8836058 DOI: 10.3390/ijms23031376] [Citation(s) in RCA: 126] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 01/14/2022] [Accepted: 01/24/2022] [Indexed: 02/07/2023] Open
Abstract
Osteoporosis is a serious health issue among aging postmenopausal women. The majority of postmenopausal women with osteoporosis have bone loss related to estrogen deficiency. The rapid bone loss results from an increase in bone turnover with an imbalance between bone resorption and bone formation. Osteoporosis can also result from excessive glucocorticoid usage, which induces bone demineralization with significant changes of spatial heterogeneities of bone at microscale, indicating potential risk of fracture. This review is a summary of current literature about the molecular mechanisms of actions, the risk factors, and treatment of estrogen deficiency related osteoporosis (EDOP) and glucocorticoid induced osteoporosis (GIOP). Estrogen binds with estrogen receptor to promote the expression of osteoprotegerin (OPG), and to suppress the action of nuclear factor-κβ ligand (RANKL), thus inhibiting osteoclast formation and bone resorptive activity. It can also activate Wnt/β-catenin signaling to increase osteogenesis, and upregulate BMP signaling to promote mesenchymal stem cell differentiation from pre-osteoblasts to osteoblasts, rather than adipocytes. The lack of estrogen will alter the expression of estrogen target genes, increasing the secretion of IL-1, IL-6, and tumor necrosis factor (TNF). On the other hand, excessive glucocorticoids interfere the canonical BMP pathway and inhibit Wnt protein production, causing mesenchymal progenitor cells to differentiate toward adipocytes rather than osteoblasts. It can also increase RANKL/OPG ratio to promote bone resorption by enhancing the maturation and activation of osteoclast. Moreover, excess glucocorticoids are associated with osteoblast and osteocyte apoptosis, resulting in declined bone formation. The main focuses of treatment for EDOP and GIOP are somewhat different. Avoiding excessive glucocorticoid use is mandatory in patients with GIOP. In contrast, appropriate estrogen supplement is deemed the primary treatment for females with EDOP of various causes. Other pharmacological treatments include bisphosphonate, teriparatide, and RANKL inhibitors. Nevertheless, more detailed actions of EDOP and GIOP along with the safety and effectiveness of medications for treating osteoporosis warrant further investigation.
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Affiliation(s)
- Chu-Han Cheng
- Department of Physical Medicine and Rehabilitation, Mackay Memorial Hospital, Taipei 104, Taiwan; (C.-H.C.); (L.-R.C.)
| | - Li-Ru Chen
- Department of Physical Medicine and Rehabilitation, Mackay Memorial Hospital, Taipei 104, Taiwan; (C.-H.C.); (L.-R.C.)
- Department of Mechanical Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Kuo-Hu Chen
- Department of Obstetrics and Gynecology, Taipei Tzu-Chi Hospital, The Buddhist Tzu-Chi Medical Foundation, Taipei 231, Taiwan
- School of Medicine, Tzu-Chi University, Hualien 970, Taiwan
- Correspondence: ; Tel.: +886-2-66289779
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Zhao Z, Cai Z, Chen A, Cai M, Yang K. Application of metabolomics in osteoporosis research. Front Endocrinol (Lausanne) 2022; 13:993253. [PMID: 36452325 PMCID: PMC9702081 DOI: 10.3389/fendo.2022.993253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 10/28/2022] [Indexed: 11/15/2022] Open
Abstract
Osteoporosis (OP) is a systemic disease characterized by bone metabolism imbalance and bone microstructure destruction, which causes serious social and economic burden. At present, the diagnosis and treatment of OP mainly rely on imaging combined with drugs. However, the existing pathogenic mechanisms, diagnosis and treatment strategies for OP are not clear and effective enough, and the disease progression that cannot reflect OP further restricts its effective treatment. The application of metabolomics has facilitated the study of OP, further exploring the mechanism and behavior of bone cells, prevention, and treatment of the disease from various metabolic perspectives, finally realizing the possibility of a holistic approach. In this review, we focus on the application of metabolomics in OP research, especially the newer systematic application of metabolomics and treatment with herbal medicine and their extracts. In addition, the prospects of clinical transformation in related fields are also discussed. The aim of this study is to highlight the use of metabolomics in OP research, especially in exploring the pathogenesis of OP and the therapeutic mechanisms of natural herbal medicine, for the benefit of interdisciplinary researchers including clinicians, biologists, and materials engineers.
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Affiliation(s)
- Zhenyu Zhao
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhengwei Cai
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Aopan Chen
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Ming Cai
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- *Correspondence: Ming Cai, ; Kai Yang,
| | - Kai Yang
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Ming Cai, ; Kai Yang,
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Dittmer KE, Chernyavtseva A, Marshall JC, Cabrera D, Wolber FM, Kruger M. Expression of Renal Vitamin D and Phosphatonin-Related Genes in a Sheep Model of Osteoporosis. Animals (Basel) 2021; 12:ani12010067. [PMID: 35011173 PMCID: PMC8749731 DOI: 10.3390/ani12010067] [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: 12/10/2021] [Accepted: 12/23/2021] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Osteoporosis is a significant public health issue around the world, with post-menopausal osteoporosis due to estrogen deficiency resulting in approximately ¾ of cases. Treatment with glucocorticoids is another common cause of osteoporosis in humans. Sheep are a well-established model for osteoporosis in humans. In this study, aged sheep had their ovaries removed (ovariectomy) to simulate estrogen deficiency, and some sheep were also treated with glucocorticoids. The results showed that expression of the gene klotho in the kidney had the most marked difference in ovariectomized sheep treated with glucocorticoids for 2 months followed by a recovery period of 3 months. Klotho is known as the “anti-aging” hormone and is an important regulator of calcium and phosphorus metabolism. It may therefore be involved in the recovery of bone mineral density seen in ovariectomized sheep treated with glucocorticoids for 2 months followed by euthanasia at 5 months. As such, it could be an important treatment target for osteoporosis in humans. Abstract Osteoporosis is a significant public health issue around the world, with post-menopausal osteoporosis due to estrogen deficiency resulting in approximately ¾ of cases. In this study, 18 aged Merino ewes were ovariectomized, and 10 were controls. Three of the ovariectomized ewes were treated weekly with 400 mg of methylprednisolone for 5 months and three were treated weekly for 2 months, followed by a 3-month recovery period. At 2 months, five control animals and six ovariectomized animals were euthanized. At 5 months, all the remaining ewes were euthanized. Kidney samples were collected postmortem for qPCR analysis of NPT1, PTH1R, NPT2a, NPT2c, Klotho, FGFR1IIIc, VDR, CYP24A1, CYP27B1, TRPV5, TRPV6, CalD9k, CalD28k, PMCA and NCX1. Ovariectomized sheep had significantly greater VDR expression compared with other groups. Ovariectomized sheep treated with glucocorticoids for 2 months followed by euthanasia at 5 months showed significant differences in TRPV5, CYP24A1 and klotho gene expression compared to other groups. Differences in klotho expression were most marked after adjustment for repeated measures (p = 0.1). Klotho is known as the “anti-aging” hormone and is involved in calcium and phosphorus metabolism. Klotho may be involved in the recovery of bone mineral density in ovariectomized sheep treated with glucocorticoids for 2 months followed by euthanasia at 5 months. Further research on the role of klotho is recommended.
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Affiliation(s)
- Keren E. Dittmer
- School of Veterinary Science, Massey University, Palmerston North 4442, New Zealand;
- Correspondence:
| | | | - Jonathan C. Marshall
- School of Fundamental Sciences, Massey University, Palmerston North 4442, New Zealand;
| | - Diana Cabrera
- School of Food and Advanced Technology, Massey University, Palmerston North 4442, New Zealand; (D.C.); (F.M.W.)
| | - Frances M. Wolber
- School of Food and Advanced Technology, Massey University, Palmerston North 4442, New Zealand; (D.C.); (F.M.W.)
| | - Marlena Kruger
- School of Health Sciences, Massey University, Palmerston North 4442, New Zealand;
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Lu P, Shen YM, Hua T, Pan T, Chen G, Dai T, Shi KQ. Overexpression of FGF2 delays the progression of osteonecrosis of the femoral head activating the PI3K/Akt signaling pathway. J Orthop Surg Res 2021; 16:613. [PMID: 34663382 PMCID: PMC8522004 DOI: 10.1186/s13018-021-02715-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 09/10/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The purpose of the current study was to explore the role and underlying mechanism of FGF-2 in dexamethasone (DEX)-induced apoptosis in MC3T3-E1 cells. METHODS GSE21727 was downloaded from the Gene Expression Omnibus (GEO) database to identify the differentially expressed genes (DEGs) by the limma/R package. MC3T3-E1 cells were exposed to DEX at different concentrations (0, 10-8, 10-7, 10-6, 10-5 and 10-4 mol/L), and cell viability, flow cytometry and TUNEL assay were used to detect cell proliferation and apoptosis. An FGF-2-pcDNA3 plasmid (oe-FGF-2) was used to overexpress FGF-2, and western blotting was conducted to detect protein expression. RESULTS We found that FGF-2 was downregulated in the DEX-treated group. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses indicated that DEGs were associated with PI3K/Akt signaling pathway. DEX downregulated FGF-2 gene and protein expression, inhibited viability and induced MC3T3-E1 cell apoptosis. Overexpression of FGF-2 reversed DEX-induced apoptosis in MC3T3-E1 cells. FGF-2-mediated anti-apoptosis was impaired by inactivating the PI3K/AKT pathway with LY294002. Moreover, overexpression of FGF2 delayed the progression of DEX-induced osteonecrosis of the femoral head (ONFH) animal model by regulation PI3K/Akt signaling pathway. CONCLUSION In conclusion, FGF-2 is effective at inhibiting DEX-induced MC3T3-E1 cell apoptosis through regulating PI3K/Akt signaling pathway.
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Affiliation(s)
- Pei Lu
- Department of Orthopaedics, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi City, 214000, Jiangsu Province, China
| | - Yi-Min Shen
- Department of Orthopaedics, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi City, 214000, Jiangsu Province, China
| | - Ting Hua
- Department of Orthopaedics, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi City, 214000, Jiangsu Province, China
| | - Ting Pan
- Department of Orthopaedics, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi City, 214000, Jiangsu Province, China
| | - Gang Chen
- Department of Orthopaedics, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi City, 214000, Jiangsu Province, China
| | - Teng Dai
- Department of Orthopaedics, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi City, 214000, Jiangsu Province, China
| | - Ke-Qin Shi
- Department of Orthopaedics, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, No. 68 Zhongshan Road, Wuxi City, 214000, Jiangsu Province, China.
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Tao ZS, Zhou WS, Xu HG, Yang M. Intermittent administration sodium valproate has a protective effect on bone health in ovariectomized rats. Eur J Pharmacol 2021; 906:174268. [PMID: 34166702 DOI: 10.1016/j.ejphar.2021.174268] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 06/14/2021] [Accepted: 06/14/2021] [Indexed: 12/09/2022]
Abstract
The present work was aimed to evaluate the effect of different administration modes of sodium valproate (VPA) on bone strength, bone mass and bone mineral density in ovariectomized (OVX) rats and further investigation of the possible mechanism. 60 female SD rats were randomly divided into 4 groups: Sham group (Sham, n = 15), OVX group (OVX, n = 15), OVX rats received intermittent VPA treatment group (IVPA, n = 15) and OVX rats received daily VPA treatment group (EVPA, n = 15). After 12 weeks of treatment, the rats were sacrificed, and serum and femur samples were harvested. DEXA, Micro-CT, history, biomechanical testing, biochemical index and western blot analysis were used to observe the therapeutic effect and explore the possible mechanism. Micro-CT and DEXA analysis of bones revealed better BMD and higher BV/TV, Tb. Th, Tb. N, Conn. D and lower Tb. Sp at femoral metaphysis evaluated in IVPA when compared with OVX and EVPA group (P < 0.05). Histological, fluorescent analysis and biological strength revealed more trabecular bone and higher relative mineral apposition rate, maximal load, elastic modulus and energy at break with evaluated in IVPA when compared with OVX and EVPA group (P < 0.05). The levels of P1NP, estrogen, CTX, TRAP-5b and RANKL of the IVPA group showed a significant increase when compared with the OVX and EVPA group (P < 0.05). We confirm adverse effects on protein expressions including Notch1, Jagged1, HEY1, Wnt 1, β-catenin and RUNX2 following daily VPA treatment in OVX female rats. Our current study demonstrated that intermittent administration of sodium valproate has a protective effect on bone health in OVX rats and these effects may be achieved by activating Notch/Wnt/β-catenin/RUNX2 signal axis.
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Affiliation(s)
- Zhou-Shan Tao
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, No. 2, Zhe Shan Xi Road, Wuhu, 241001, Anhui, People's Republic of China.
| | - Wan-Shu Zhou
- Department of Geriatrics, The Second Affiliated Hospital of Wannan Medical College, No.123, Kangfu Road, Wuhu, 241000, Anhui, People's Republic of China
| | - Hong-Guang Xu
- Department of Spinal Orthopedics, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, No. 2, Zhe Shan Xi Road, Wuhu, 241001, Anhui, People's Republic of China
| | - Min Yang
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, No. 2, Zhe Shan Xi Road, Wuhu, 241001, Anhui, People's Republic of China
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9
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Cabrera D, Kruger M, Wolber FM, Roy NC, Fraser K. Correction to: Effects of short- and long-term glucocorticoid-induced osteoporosis on plasma metabolome and lipidome of ovariectomized sheep. BMC Musculoskelet Disord 2020; 21:501. [PMID: 32727440 PMCID: PMC7392832 DOI: 10.1186/s12891-020-03485-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
An amendment to this paper has been published and can be accessed via the original article.
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Affiliation(s)
- Diana Cabrera
- Food Nutrition & Health Team, AgResearch Grasslands, Tennent Drive, Palmerston North, 4442, New Zealand.
| | - Marlena Kruger
- School of Health Sciences, Massey University, Tennent Drive, Palmerston North, 4442, New Zealand.,Riddet Institute, Massey University, Palmerston North, 4442, New Zealand
| | - Frances M Wolber
- Riddet Institute, Massey University, Palmerston North, 4442, New Zealand.,School of Food Advanced technology, Massey University, Tennent Drive, Palmerston North, 4442, New Zealand.,Centre for Metabolic Health Research, Massey University, Tennent Drive, Palmerston North, 4442, New Zealand
| | - Nicole C Roy
- Food Nutrition & Health Team, AgResearch Grasslands, Tennent Drive, Palmerston North, 4442, New Zealand.,Riddet Institute, Massey University, Palmerston North, 4442, New Zealand.,High-Value Nutrition National Science Challenge, Auckland, 1142, New Zealand
| | - Karl Fraser
- Food Nutrition & Health Team, AgResearch Grasslands, Tennent Drive, Palmerston North, 4442, New Zealand.,Riddet Institute, Massey University, Palmerston North, 4442, New Zealand.,High-Value Nutrition National Science Challenge, Auckland, 1142, New Zealand
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