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Hughes JM, Guerriere KI, Popp KL, Castellani CM, Pasiakos SM. Exercise for optimizing bone health after hormone-induced increases in bone stiffness. Front Endocrinol (Lausanne) 2023; 14:1219454. [PMID: 37790607 PMCID: PMC10544579 DOI: 10.3389/fendo.2023.1219454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 08/17/2023] [Indexed: 10/05/2023] Open
Abstract
Hormones and mechanical loading co-regulate bone throughout the lifespan. In this review, we posit that times of increased hormonal influence on bone provide opportunities for exercise to optimize bone strength and prevent fragility. Examples include endogenous secretion of growth hormones and sex steroids that modulate adolescent growth and exogenous administration of osteoanabolic drugs like teriparatide, which increase bone stiffness, or its resistance to external forces. We review evidence that after bone stiffness is increased due to hormonal stimuli, mechanoadaptive processes follow. Specifically, exercise provides the mechanical stimulus necessary to offset adaptive bone resorption or promote adaptive bone formation. The collective effects of both decreased bone resorption and increased bone formation optimize bone strength during youth and preserve it later in life. These theoretical constructs provide physiologic foundations for promoting exercise throughout life.
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Affiliation(s)
- Julie M. Hughes
- Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States
| | - Katelyn I. Guerriere
- Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States
| | - Kristin L. Popp
- Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States
- Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, United States
| | - Colleen M. Castellani
- Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States
- Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, United States
| | - Stefan M. Pasiakos
- Military Performance Division, United States Army Research Institute of Environmental Medicine, Natick, MA, United States
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Chen J, Liao X, Gan J. Review on the protective activity of osthole against the pathogenesis of osteoporosis. Front Pharmacol 2023; 14:1236893. [PMID: 37680712 PMCID: PMC10481961 DOI: 10.3389/fphar.2023.1236893] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 08/14/2023] [Indexed: 09/09/2023] Open
Abstract
Osteoporosis (OP), characterized by continuous bone loss and increased fracture risk, has posed a challenge to patients and society. Long-term administration of current pharmacological agents may cause severe side effects. Traditional medicines, acting as alternative agents, show promise in treating OP. Osthole, a natural coumarin derivative separated from Cnidium monnieri (L.) Cusson and Angelica pubescens Maxim. f., exhibits protective effects against the pathological development of OP. Osthole increases osteoblast-related bone formation and decreases osteoclast-related bone resorption, suppressing OP-related fragility fracture. In addition, the metabolites of osthole may exhibit pharmacological effectiveness against OP development. Mechanically, osthole promotes osteogenic differentiation by activating the Wnt/β-catenin and BMP-2/Smad1/5/8 signaling pathways and suppresses RANKL-induced osteoclastogenesis and osteoclast activity. Thus, osthole may become a promising agent to protect against OP development. However, more studies should be performed due to, at least in part, the uncertainty of drug targets. Further pharmacological investigation of osthole in OP treatment might lead to the development of potential drug candidates.
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Affiliation(s)
- Jincai Chen
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Xiaofei Liao
- Department of Pharmacy, Ganzhou People’s Hospital, Ganzhou, China
| | - Juwen Gan
- Department of Pulmonary and Critical Care Medicine, Ganzhou People’s Hospital, Ganzhou, China
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Li GF, Gao Y, Weinberg ED, Huang X, Xu YJ. Role of Iron Accumulation in Osteoporosis and the Underlying Mechanisms. Curr Med Sci 2023; 43:647-654. [PMID: 37326889 DOI: 10.1007/s11596-023-2764-z] [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: 09/10/2020] [Accepted: 03/09/2021] [Indexed: 06/17/2023]
Abstract
Osteoporosis is prevalent in postmenopausal women. The underlying reason is mainly estrogen deficiency, but recent studies have indicated that osteoporosis is also associated with iron accumulation after menopause. It has been confirmed that some methods of decreasing iron accumulation can improve the abnormal bone metabolism associated with postmenopausal osteoporosis. However, the mechanism of iron accumulation-induced osteoporosis is still unclear. Iron accumulation may inhibit the canonical Wnt/β-catenin pathway via oxidative stress, leading to osteoporosis by decreasing bone formation and increasing bone resorption via the osteoprotegerin (OPG)/receptor activator of nuclear factor kappa-B ligand (RANKL)/receptor activator of nuclear factor kappa-B (RANK) system. In addition to oxidative stress, iron accumulation also has been reported to inhibit either osteoblastogenesis or osteoblastic function as well as to stimulate either osteoclastogenesis or osteoclastic function directly. Furthermore, serum ferritin has been widely used for the prediction of bone status, and nontraumatic measurement of iron content by magnetic resonance imaging may be a promising early indicator of postmenopausal osteoporosis.
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Affiliation(s)
- Guang-Fei Li
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, 2015004, China
- Osteoporosis Institute of Soochow University, Suzhou, 215004, China
| | - Yan Gao
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, 2015004, China
- Osteoporosis Institute of Soochow University, Suzhou, 215004, China
| | - E D Weinberg
- Department of Biology & Program in Medical Sciences, Indiana University, Bloomington, IN, 47405, USA
| | - Xi Huang
- Department of Environmental Medicine, New York University, School of Medicine, New York, NY, 10016, USA
| | - You-Jia Xu
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, 2015004, China.
- Osteoporosis Institute of Soochow University, Suzhou, 215004, China.
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Tobe T, Kubo M, Toda T, Morita M, Watanabe M, Yamada S, Suzuki A, Hayashi T. Hospital-wide surveillance of fracture risk assessment by both FRAX and medication patterns in acute care hospital. Biol Pharm Bull 2022; 45:881-887. [PMID: 35474184 DOI: 10.1248/bpb.b22-00017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To identify patients at a high risk for primary and secondary osteoporotic fractures using fracture risk assessments performed using the current method and the proposed method, in an acute care hospital and to identify departments where high-risk patients are admitted. This retrospective study included patients aged 40-90 years who were hospitalized at Fujita Health University Hospital. We collated the clinical data and prescriptions of all study participants. We also gathered data pertaining to risk factors according to Fracture Risk Assessment Tool (FRAX). Of the 1,595 patients, the mean number of major osteoporotic fracture risk predicted using FRAX was 11.73%. The department of rheumatology showed the highest fracture risk (18.55 ± 16.81) and had the highest number of patients on medications that resulted in reduced bone mineral density (1.07 ± 0.98 medication). Based on the FRAX, the proportion of patients in the high-risk group in this department was significantly higher compared with those in the remaining departments with respect to glucocorticoid administration, rheumatoid arthritis, and secondary osteoporosis. However, the departments included in the high-risk group were not necessarily the same as the departments included in the top group, based on the administered medications. FRAX score is calculated based on various risk factors; however, only glucocorticoid corresponds to medications. We should focus on medication prescription patterns in addition to FRAX to improve fracture risk assessment in hospital-wide surveillance. Therefore, we recommend the use of FRAX along with the prescribed medications to identify departments that admit high-risk patients.
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Affiliation(s)
- Takao Tobe
- College of Pharmacy, Kinjo Gakuin University.,Department of Clinical Pharmacy, Fujita Health University
| | - Misaki Kubo
- Department of Clinical Pharmacy, Fujita Health University
| | - Takahiro Toda
- Department of Clinical Pharmacy, Fujita Health University
| | | | | | - Shigeki Yamada
- Department of Clinical Pharmacy, Fujita Health University
| | - Atsushi Suzuki
- Department of Endocrinology and Metabolism, Fujita Health University
| | - Takahiro Hayashi
- College of Pharmacy, Kinjo Gakuin University.,Department of Clinical Pharmacy, Fujita Health University
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Assessment of Collagen-Based Nanostructured Biomimetic Systems with a Co-Culture of Human Bone-Derived Cells. Cells 2021; 11:cells11010026. [PMID: 35011588 PMCID: PMC8744918 DOI: 10.3390/cells11010026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/03/2021] [Accepted: 12/14/2021] [Indexed: 12/25/2022] Open
Abstract
Osteoporosis is a worldwide disease resulting in the increase of bone fragility and enhanced fracture risk in adults. In the context of osteoporotic fractures, bone tissue engineering (BTE), i.e., the use of bone substitutes combining biomaterials, cells, and other factors, is considered a potential alternative to conventional treatments. Innovative scaffolds need to be tested in in vitro systems where the simultaneous presence of osteoblasts (OBs) and osteoclasts (OCs), the two main players of bone remodeling, is required to mimic their crosstalk and molecular cooperation. To this aim, two composite materials were developed, based on type I collagen, and containing either strontium-enriched mesoporous bioactive glasses or rod-like hydroxyapatite nanoparticles. The developed nanostructured systems underwent genipin chemical crosslinking and were then tested with an indirect co-culture of human trabecular bone-derived OBs and buffy coat-derived OC precursors, for 2–3 weeks. The favorable structural and biological properties of the materials proved to successfully support the viability, adhesion, and differentiation of cells, encouraging a further investigation of the developed bioactive systems as biomaterial inks for the 3D printing of more complex scaffolds for BTE.
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Kim B, Cho YJ, Lim W. Osteoporosis therapies and their mechanisms of action (Review). Exp Ther Med 2021; 22:1379. [PMID: 34650627 PMCID: PMC8506919 DOI: 10.3892/etm.2021.10815] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/04/2021] [Indexed: 12/15/2022] Open
Abstract
Osteoporosis is a common disease that affects millions of patients worldwide and is most common in menopausal women. The main characteristics of osteoporosis are low bone density and increased risk of fractures due to deterioration of the bone architecture. Osteoporosis is a chronic disease that is difficult to treat; thus, investigations into novel effective therapeutic methods are required. A number of studies have focused on determining the most effective treatment options for this disease. There are several treatment options for osteoporosis that differ depending on the characteristics of the disease, and these include both well-established and newly developed drugs. The present review focuses on the various drugs available for osteoporosis, the associated mechanisms of action and the methods of administration.
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Affiliation(s)
- Beomchang Kim
- Laboratory of Orthopaedic Research, School of Medicine, Chosun University, Gwangju 61452, Republic of Korea
| | - Yong Jin Cho
- Department of Orthopaedic Surgery, College of Medicine, Chosun University, Gwangju 61452, Republic of Korea
| | - Wonbong Lim
- Laboratory of Orthopaedic Research, School of Medicine, Chosun University, Gwangju 61452, Republic of Korea.,Department of Orthopaedic Surgery, College of Medicine, Chosun University, Gwangju 61452, Republic of Korea.,Department of Premedical Sciences, College of Medicine, Chosun University, Gwangju 61452, Republic of Korea
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Enhanced osteogenic differentiation of alendronate-conjugated nanodiamonds for potential osteoporosis treatment. Biomater Res 2021; 25:28. [PMID: 34556181 PMCID: PMC8461989 DOI: 10.1186/s40824-021-00231-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 09/07/2021] [Indexed: 12/22/2022] Open
Abstract
Background Alendronate (Alen) is promising material used for bone-targeted drug delivery due to its high bone affinity and therapeutic effects on bone diseases. In addition, Alen can enhance the osteogenic differentiation of osteoblastic cell. Recently, nanodiamonds (NDs) with hardness, non-toxicity, and excellent biocompatibility are employed as promising materials for carrier systems and osteogenic differentiation. Therefore, we prepared Alen-conjugated NDs (Alen-NDs) and evaluated their osteogenic differentiation performances. Methods Alen-NDs were synthesized using DMTMM as a coupling reagent. Morphological change of Mouse calvaria-derived preosteoblast (MC3T3-E1) treated with Alen-NDs was observed using the confocal microscope. The osteogenic differentiation was confirmed by cell proliferation, alkaline phosphatase (ALP), calcium deposition, and real-time polymerase chain reaction assay. Results Alen-NDs were prepared to evaluate their effect on the proliferation and differentiation of osteoblastic MC3T3-E1 cells. The Alen-NDs had a size of about 100 nm, and no cytotoxicity at less than 100 μg/mL of concentration. The treatment of NDs and Alen-NDs reduced the proliferation rate of MC3T3-E1 cells without cell death. Confocal microscopy images confirmed that the treatment of NDs and Alen-NDs changed the cellular morphology from a fibroblastic shape to a cuboidal shape. Flow cytometry, alkaline phosphatase (ALP) activity, calcium deposition, and real-time polymerase chain reaction (RT-PCR) confirmed the higher differentiation of MC3T3-E1 cells treated by Alen-NDs, compared to the groups treated by osteogenic medium and NDs. The higher concentration of Alen-ND treated in MC3T3-E1 resulted in a higher differentiation level. Conclusions Alen-NDs can be used as potential therapeutic agents for osteoporosis treatment by inducing osteogenic differentiation.
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Luo D, Hu Y, Tang Y, Ding X, Li C, Zheng L. Effect of advanced glycation end products on autophagic ability in osteoblasts. ZHONG NAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF CENTRAL SOUTH UNIVERSITY. MEDICAL SCIENCES 2021; 46:361-367. [PMID: 33967081 PMCID: PMC10930303 DOI: 10.11817/j.issn.1672-7347.2021.190401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Indexed: 11/03/2022]
Abstract
OBJECTIVES Excessive production of AGEs in diabetic patients will affect the normal function of osteoblasts, and this process may be related to autophagy of osteoblasts. This study aims to explore the effect of advanced glycation end products (AGEs) on autophagic activity during osteogenic differentiation in rat bone marrow mesenchymal stem cells (BMSCs). METHODS BMSCs were isolated and cultured in vitro, treated with different concentrations (0, 50, 100, 200, and 400 mg/L) of AGEs for different time (3, 6, 12, 24, 48, and 72 h). The proliferation activity was detected by CCK-8 method. The mRNA and protein expression levels of Beclin1 and LC3 in cells were detected by real-time PCR and Western blotting, respectively.The autophagic vacuoles were observed under the transmission electron microscope. The cells were treated with autophagy promoter rapamycin or autophagy inhibitor 3MA. After 7 days of osteogenic induction, we performed alkaline phosphatase (ALP) staining and real-time PCR to detect the mRNA expression levels of osteogenesis-related genes. RESULTS In the low-concentration groups, the proliferation activity in BMSCs was increased (P<0.01), the mRNA and protein expressions of autophagy-related genes LC3 and Beclin1 were increased (both P<0.01). The number of autophagosome also was increased. In the high-concentration groups, the results were just the opposite. In the low-concentration groups, the ALP staining was deeper than that of the 0 mg/L AGEs group, and the mRNA expressions of the osteogenic related genes were increased (P<0.01). But the results were reversed in the presence of autophagy inhibitor 3MA. In the high-concentration groups, the ALP staining was lighter than that of the 0 mg/L AGEs group, and the mRNA expressions of the osteogenic related genes were decreased (P<0.01). After the addition of the autophagy promoter rapamycin, the results were reversed. CONCLUSIONS Low concentration of AGEs can enhance the proliferative activity of BMSCs and promote osteogenic differentiation by accelerating autophagy. High concentration of AGEs can suppress the proliferation of BMSCs and inhibit osteogenic differentiation by reducing autophagy.
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Affiliation(s)
- Dan Luo
- Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, Chongqing 401145.
- Chongqing Key Laboratory of Oral Diseases and Biomedicine Science, Chongqing 401145.
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401145.
| | - Yun Hu
- Chongqing Key Laboratory of Oral Diseases and Biomedicine Science, Chongqing 401145
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401145
- Department of Pediatric Stomatology, Stomatological Hospital of Chongqing Medical University, Chongqing 401145, China
| | - Yu Tang
- Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, Chongqing 401145
- Chongqing Key Laboratory of Oral Diseases and Biomedicine Science, Chongqing 401145
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401145
| | - Xiaoqian Ding
- Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, Chongqing 401145
- Chongqing Key Laboratory of Oral Diseases and Biomedicine Science, Chongqing 401145
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401145
| | - Caiyu Li
- Chongqing Key Laboratory of Oral Diseases and Biomedicine Science, Chongqing 401145
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401145
- Department of Pediatric Stomatology, Stomatological Hospital of Chongqing Medical University, Chongqing 401145, China
| | - Leilei Zheng
- Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, Chongqing 401145.
- Chongqing Key Laboratory of Oral Diseases and Biomedicine Science, Chongqing 401145.
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401145.
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Huang F, Guo H, Wei Y, Zhao X, Chen Y, Lin Z, Zhou Y, Sun P. In Silico Network Analysis of Ingredients of Cornus officinalis in Osteoporosis. Med Sci Monit 2021; 27:e929219. [PMID: 33795629 PMCID: PMC8023278 DOI: 10.12659/msm.929219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 01/10/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Cornus officinalis (CO), also known as 'Shanzhuyu', is one of the most common traditional Chinese herbs used against osteoporosis. Although previous studies have found that CO has beneficial effects in alleviating osteoporosis, its mechanisms remain unclear. MATERIAL AND METHODS In this study, we applied system bioinformatic approaches to investigate the possible therapeutic mechanisms of CO against osteoporosis. We collected the active ingredients of CO and their targets from the TCMSP, BATMAN-TCM, and ETCM databases. Next, we obtained the osteoporosis targets from differentially expressed mRNAs from the Gene Expression Omnibus (GEO) gene series (GSE35958). Next, the shared genes of the CO pharmacological targets and osteoporosis-related targets were selected to construct the protein-protein interaction network, based on the results from the STRING database. Subsequently, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were carried out by using the clusterProfiler package in R software. RESULTS In all, there were 58 unique CO compounds and 518 therapeutic targets. Based on the GO and KEGG enrichment results of 98 common genes, we selected the top 25 terms, based on the terms' P values. We found that the anti-osteoporotic effect of CO may mostly involve the regulation of calcium metabolism and reactive oxygen species, and the estrogen signaling pathway and osteoclast differentiation pathway. CONCLUSIONS We found the possible mechanisms of CO in treating osteoporosis may be based on multiple targets and pathways. We also provided a theoretical basis and promising direction for investigating the exact anti-osteoporotic mechanisms of CO.
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Affiliation(s)
- Feiqi Huang
- First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, P.R. China
- Department of Bone Orthopedics, The First Affiliated Hospital/School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, P.R. China
| | - Huizhi Guo
- First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, P.R. China
| | - Yuanbiao Wei
- Department of Bone Orthopedics, The First Affiliated Hospital/School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, P.R. China
| | - Xiao Zhao
- Department of Bone Orthopedics, The First Affiliated Hospital/School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, P.R. China
| | - Yangsheng Chen
- Department of Bone Orthopedics, The First Affiliated Hospital/School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, P.R. China
| | - Zhan Lin
- Department of Bone Orthopedics, The First Affiliated Hospital/School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, P.R. China
| | - Yanhui Zhou
- Department of Bone Orthopedics, The First Affiliated Hospital/School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, P.R. China
| | - Ping Sun
- Department of Endocrinology, The First Affiliated Hospital/School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, P.R. China
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Yüce MO, Adalı E, Işık G. The effect of concentrated growth factor (CGF) in the surgical treatment of medication-related osteonecrosis of the jaw (MRONJ) in osteoporosis patients: a randomized controlled study. Clin Oral Investig 2021; 25:4529-4541. [PMID: 33392802 DOI: 10.1007/s00784-020-03766-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 12/21/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVES The purpose of this present study was to evaluate the efficiency of the growth factors delivered by concentrated growth factor (CGF) on the healing process of osteoporotic patients with medication-related osteonecrosis of the jaws (MRONJ). METHODS This randomized controlled study was composed of osteoporotic female patients who were treated with oral bisphosphonates (BPs) and diagnosed with MRONJ. For the CGF group, each patient was treated with a local application of CGF at the surgical site after removing the necrotic bone, while the surgical area was primarily closed as traditional surgical therapy for the control group. The patients underwent clinical examinations for 6 months postoperatively to check the presence of infection and dehiscence. RESULTS Complete healing was achieved in 19 patients of 28 patients (mean age: CGF group, 73.57 ± 5.1; control group, 73.64 ± 5.49) diagnosed with MRONJ. There was no significant difference in post-op healing data between groups during healing periods (p > 0.05). In the CGF group (n = 14) in three cases, bone exposure without infection was detected, and one of them showed a recurrent infection. In the control group (n = 14) in six cases, bone exposure without infection was detected, and three of them also showed recurrent infection. CONCLUSION Although our results were not statistically significant, our findings suggest that the local application of CGF appears to be an effective approach to the surgical treatment of MRONJ in osteoporosis patients by improving tissue regeneration. CLINICAL RELEVANCE A specific treatment protocol to manage MRONJ is still controversial. This study justifies that CGF can be used in combination with surgical treatment.
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Affiliation(s)
- Meltem Ozden Yüce
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ege University, Izmir, Turkey
| | - Emine Adalı
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Izmir Democracy University, Izmir, Turkey.
| | - Gözde Işık
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ege University, Izmir, Turkey
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Xue JY, Ikegawa S, Guo L. Genetic disorders associated with the RANKL/OPG/RANK pathway. J Bone Miner Metab 2021; 39:45-53. [PMID: 32940787 DOI: 10.1007/s00774-020-01148-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 08/20/2020] [Indexed: 10/23/2022]
Abstract
The RANKL/OPG/RANK signalling pathway is a major regulatory system for osteoclast formation and activity. Mutations in TNFSF11, TNFRSF11B and TNFRSF11A cause defects in bone metabolism and development, thereby leading to skeletal disorders with changes in bone density and/or morphology. To date, nine kinds of monogenic skeletal diseases have been found to be causally associated with TNFSF11, TNFRSF11B and TNFRSF11A mutations. These diseases can be divided into two types according to the mutation effects and the resultant pathogenesis. One is caused by the mutations inducing constitutional RANK activation or OPG deficiency, which increase osteoclastogenesis and accelerate bone turnover, resulting in juvenile Paget's disease 2, Paget disease of bone 2, familial expansile osteolysis, expansile skeletal hyperphosphatasia, panostotic expansile bone disease, and Paget disease of bone 5. The other is caused by the de-activating mutations in TNFRSF11A or TNFSF11, which decrease osteoclastogenesis and elevate bone density, resulting in osteopetrosis, autosomal recessive 2 and 7, and dysosteosclerosis. Here we reviewed the current knowledge about these genetic disorders with paying particular attention to the updating genotype-phenotype association in the TNFRSF11A-caused diseases.
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Affiliation(s)
- Jing-Yi Xue
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, 4-6-1 Minato-ku, Tokyo, 108-8639, Japan
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Shiro Ikegawa
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, 4-6-1 Minato-ku, Tokyo, 108-8639, Japan.
| | - Long Guo
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, 4-6-1 Minato-ku, Tokyo, 108-8639, Japan.
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Deciphering the Underlying Mechanism of Eucommiae Cortex against Osteoporotic Fracture by Network Pharmacology. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:7049812. [PMID: 32963568 PMCID: PMC7492876 DOI: 10.1155/2020/7049812] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 08/28/2020] [Indexed: 12/13/2022]
Abstract
Background Du Zhong (DZ), or Eucommiae Cortex, a traditional Chinese herbal medicine, has been used to treat osteoporosis. Although it has been reported that DZ can improve bone mass in ovariectomized rats, its pharmacological mechanisms in treating osteoporotic fractures (OPF) remain unclear. Methods In this study, we used a network pharmacological manner to explore its potential complicated mechanism in treating OPF. We obtained DZ compounds from TCMSP and BATMAN-TCM databases and collected potential targets of these compounds through target fishing based on TCMSP and BATMAN-TCM databases. Next, we collected the OPF targets by using CTD, GeneCards, OMIM, HPO, and GenCLiP 3 databases. And then the overlapping genes between DZ potential targets and OPF targets were used to build up the protein-protein interaction (PPI) network and to analyze their interactions and find out the big hub genes in this network. Subsequently, clusterProfiler package in R language was utilized to conduct the enrichment of Gene Ontology biological process and KEGG pathways. Results There were totally 93 active compounds and 916 related targets in DZ. After the enrichment analysis, we collected top 25 cellular biological processes and top 25 pathways based on the adjusted P value and found that the DZ anti-OPF effect was mainly associated with the regulation of ROS and inflammatory response. Furthermore, 64 hub genes in PPI network, such as MAPK1 (degree = 41), SRC (degree = 39), PIK3R1 (degree = 36), VEGFA (degree = 31), TP53 (degree = 29), EGFR (degree = 29), JUN (degree = 29), AGT (degree = 29), MAPK1, SRC, PIK3R1, VEGFA, and TP53, were considered as potential therapeutic targets, implying the underlying mechanisms of DZ acting on OPF. Conclusion We investigated the possible therapeutic mechanisms of DZ from a systemic perspective. These key targets and pathways provided promising directions for the future research to reveal the exact regulating mechanisms of DZ in treating OPF.
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Luo B, Yang J, Yuan Y, Hao P, Cheng X. MicroRNA-142 regulates osteoblast differentiation and apoptosis of mouse pre-osteoblast cells by targeting bone morphogenetic protein 2. FEBS Open Bio 2020; 10:1793-1801. [PMID: 32652747 PMCID: PMC7459402 DOI: 10.1002/2211-5463.12929] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 07/01/2020] [Indexed: 12/13/2022] Open
Abstract
Osteoporosis is a common disease that can seriously impair the physical and mental health of the elderly. However, current treatment is unsatisfactory due to the lack of effective therapeutic targets. Abnormal expression and involvement of microRNA‐142 (miR‐142) have been identified in many diseases, including bone‐related diseases. Herein, we explored the effect of miR‐142 on the viability, differentiation and apoptosis of the mouse preosteoblast cell line MC3T3‐E1. We observed that the viability of MC3T3‐E1 cells was significantly inhibited or promoted after transfection of miR‐142 mimic or inhibitor, respectively. The apoptotic rate was dramatically increased by miR‐142 mimic and decreased by inhibitor compared with the negative control group. Bcl‐2 expression was down‐regulated in the miR‐142 mimic group and up‐regulated in the miR‐142 inhibitor group, whereas levels of cleaved caspase‐3 and Bax were increased in the miR‐142 mimic group and reduced in the miR‐142 inhibitor group. Expression changes of Runx2 and Osteocalcin suggest that miR‐142 inhibits the differentiation of osteoblast cells. Moreover, the luciferase reporter assay was used to verify that bone morphogenetic protein 2 (BMP2) is a target of miR‐142. Overexpression of BMP2 repressed the proapoptotic effect of miR‐142 mimic, whereas knockdown of BMP2 abolished the inhibitory effect of miR‐142 inhibitor on the apoptosis of MC3T3‐E1 cells. Furthermore, up‐regulation or down‐regulation of miR‐142 dramatically decreased or increased the ratio of p‐Smad1/5/Smad1 and p‐Smad1/5/Smad5, respectively. Collectively, our results imply that miR‐142 might influence the viability and differentiation of osteoblast cells by regulating BMP2 and BMP/Smad signaling.
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Affiliation(s)
- Bing Luo
- Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Jiafu Yang
- Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Yi Yuan
- Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Pandeng Hao
- Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Xiaoyan Cheng
- Department of Anesthesiology, Weifang People's Hospital, Weifang, China
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Karakousis VA, Liouliou D, Loula A, Kagianni N, Dietrich EM, Meditskou S, Sioga A, Papamitsou T. Immunohistochemical Femoral Nerve Study Following Bisphosphonates Administration. MEDICINA (KAUNAS, LITHUANIA) 2020; 56:medicina56030140. [PMID: 32204565 PMCID: PMC7142497 DOI: 10.3390/medicina56030140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 03/11/2020] [Accepted: 03/11/2020] [Indexed: 01/07/2023]
Abstract
Background and objectives: Bisphosphonates represent selective inhibitors of excess osteoblastic bone resorption that characterizes all osteopathies, targeting osteoclasts and their precursors. Their long-term administration in postmenopausal women suffering from osteoporosis has resulted in neural adverse effects. The current study focuses on the research of possible alterations in the femoral nerve, caused by bisphosphonates. We hypothesized that bisphosphonates, taken orally (per os), may produce degenerative changes to the femoral nerve, affecting lower-limb posture and walking neuronal commands. Materials and Methods: In order to support our hypothesis, femoral nerve specimens were extracted from ten female 12-month-old Wistar rats given 0.05 milligrams (mg) per kilogram (kg) of body weight (b.w.) per week alendronate per os for 13 weeks and from ten female 12-month-old Wistar rats given normal saline that were used as a control group. Specimens were studied using immunohistochemistry for selected antibodies NeuN (Neuronal Nuclear Protein), a protein located within mature, postmitotic neural nucleus, and cytosol and Sox10 (Sex-determining Region Y (SRY) - High-Motility Group (HMG) - box 10). The latter marker is fundamental for myelination of peripheral nerves. Obtained slides were examined under a light microscope. Results: Samples extracted from rats given alendronate were more Sox10 positive compared to samples of the control group, where the marker's expression was not so intense. Both groups were equally NeuN positive. Our results are in agreement with previous studies conducted under a transmission electron microscope. Conclusions: The suggested pathophysiological mechanism linked to histological alterations described above is possibly related to toxic drug effects on Schwann and neuronal cells. Our hypothesis enhances the existing scientific evidence of degenerative changes present on femoral nerve following bisphosphonates administration, indicating a possible relationship between alendronate use and neuronal function.
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Affiliation(s)
| | - Danai Liouliou
- Laboratory of Histology and Embryology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Aikaterini Loula
- Laboratory of Histology and Embryology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Nikoleta Kagianni
- Laboratory of Histology and Embryology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Eva-Maria Dietrich
- Department of Oral and Maxillofacial Surgery, University Hospital of Erlangen, 91054 Erlangen, Germany
| | - Soultana Meditskou
- Laboratory of Histology and Embryology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Antonia Sioga
- Laboratory of Histology and Embryology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Theodora Papamitsou
- Laboratory of Histology and Embryology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Correspondence:
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15
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Sun Y, Chen R, Zhu D, Shen ZQ, Zhao HB, Lee WH. Osteoking improves OP rat by enhancing HSP90‑β expression. Int J Mol Med 2020; 45:1543-1553. [PMID: 32323753 PMCID: PMC7138285 DOI: 10.3892/ijmm.2020.4529] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 02/27/2020] [Indexed: 12/18/2022] Open
Abstract
Osteoporosis (OP) is a chronic bone disease that affects individuals worldwide. Osteoporosis is primarily asymptomatic, and patients with OP suffer from pain, inconvenience, economic pressure and osteoporotic fracture (OPF). Osteoking, a Traditional Chinese Medicine compound that originates from the Yi ethnic group, has been used for a number of years to treat fractures. In our previous study, osteoking exhibited therapeutic effects on rats with OPF by promoting calcium deposition. Based on bioinformatics and network pharmacology analyses of a component‑target‑disease database, heat shock protein HSP 90‑β (HSP90‑β), also known as HSP90‑β, was identified to be a key target of osteoking in OP. High HSP90‑β expression levels were observed in osteoporotic rats and rat bone mesenchymal stem cells (rBMSCs) following osteoking treatment. After 12 weeks of administration in vivo, there was increased bone mineral density (BMD) (P<0.05), increased bone alkaline phosphatase (P<0.05), and improved bone microstructure in the osteoking group compared with those of the negative control group. In vitro, increased calcium deposition in rBMSCs was observed after 4 weeks of osteoking treatment. These results suggest that the mechanisms of osteoking are closely associated with HSP90‑β and activate the bone morphogenetic protein (BMP) signalling pathway, primarily through BMP‑2. Osteoking treatment improves OP in rats by enhancing HSP90‑β expression.
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Affiliation(s)
- Yan Sun
- Pharmaceutical College and Key Laboratory of Pharmacology for Natural Products of Yunnan Province, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Ran Chen
- The Clinical Laboratory Department, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Di Zhu
- Pharmaceutical College and Key Laboratory of Pharmacology for Natural Products of Yunnan Province, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Zhi-Qiang Shen
- Pharmaceutical College and Key Laboratory of Pharmacology for Natural Products of Yunnan Province, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Hong-Bin Zhao
- The Emergency Department, The First People's Hospital of Yunnan Province/The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan 650032, P.R. China
| | - Wen-Hui Lee
- Key Laboratory of Bio‑active Peptides of Yunnan Province/Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, 650032, P.R. China
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16
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Ono T, Hayashi M, Sasaki F, Nakashima T. RANKL biology: bone metabolism, the immune system, and beyond. Inflamm Regen 2020; 40:2. [PMID: 32047573 PMCID: PMC7006158 DOI: 10.1186/s41232-019-0111-3] [Citation(s) in RCA: 239] [Impact Index Per Article: 59.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 12/23/2019] [Indexed: 12/12/2022] Open
Abstract
Receptor activator of NF-κB (RANK) ligand (RANKL) induces the differentiation of monocyte/macrophage-lineage cells into the bone-resorbing cells called osteoclasts. Because abnormalities in RANKL, its signaling receptor RANK, or decoy receptor osteoprotegerin (OPG) lead to bone diseases such as osteopetrosis, the RANKL/RANK/OPG system is essential for bone resorption. RANKL was first discovered as a T cell-derived activator of dendritic cells (DCs) and has many functions in the immune system, including organogenesis, cellular development. The essentiality of RANKL in the bone and the immune systems lies at the root of the field of "osteoimmunology." Furthermore, this cytokine functions beyond the domains of bone metabolism and the immune system, e.g., mammary gland and hair follicle formation, body temperature regulation, muscle metabolism, and tumor development. In this review, we will summarize the current understanding of the functions of the RANKL/RANK/OPG system in biological processes.
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Affiliation(s)
- Takehito Ono
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549 Japan
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549 Japan
| | - Mikihito Hayashi
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549 Japan
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549 Japan
| | - Fumiyuki Sasaki
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549 Japan
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549 Japan
| | - Tomoki Nakashima
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549 Japan
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549 Japan
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17
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The Regulation of Bone Metabolism and Disorders by Wnt Signaling. Int J Mol Sci 2019; 20:ijms20225525. [PMID: 31698687 PMCID: PMC6888566 DOI: 10.3390/ijms20225525] [Citation(s) in RCA: 194] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/03/2019] [Accepted: 11/04/2019] [Indexed: 12/21/2022] Open
Abstract
Wnt, a secreted glycoprotein, has an approximate molecular weight of 40 kDa, and it is a cytokine involved in various biological phenomena including ontogeny, morphogenesis, carcinogenesis, and maintenance of stem cells. The Wnt signaling pathway can be classified into two main pathways: canonical and non-canonical. Of these, the canonical Wnt signaling pathway promotes osteogenesis. Sclerostin produced by osteocytes is an inhibitor of this pathway, thereby inhibiting osteogenesis. Recently, osteoporosis treatment using an anti-sclerostin therapy has been introduced. In this review, the basics of Wnt signaling, its role in bone metabolism and its involvement in skeletal disorders have been covered. Furthermore, the clinical significance and future scopes of Wnt signaling in osteoporosis, osteoarthritis, rheumatoid arthritis and neoplasia are discussed.
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18
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金 健, 金 大. [Risedronate inhibits rat bone marrow adipogenesis and reduces RANKL expression in adipocytes]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2019; 39:987-992. [PMID: 31511221 PMCID: PMC6765598 DOI: 10.12122/j.issn.1673-4254.2019.08.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the effects of risedronate on bone marrow adipogenesis and the expression of the receptor activator of nuclear factor κB ligand (RANKL) in adipocytes in the bone marrow micro-environment. METHODS Primary cultured rat mesenchymal stem cells (BMSCs) with or without adipogenic induction for 14 days were treated with 1, 5, 10, and 25 μmol/L risedronate. The droplets of the differentiated adipocytes were analyzed, and Western blotting was performed to detect the expression level of RANKL. Female SD rats (24-week-old) were randomly divided into sham-operated group and ovariectomy (OVX) group, and 12 weeks after the operation, the OVX rats were further divided into control group and risedronate group (2.4 μg/kg, injected subcutaneously for 3 times a week). Eight weeks later, the bone mineral density (BMD) of the rats and bone marrow histopathology of the femurs was examined to evaluate the effect of risedronate on the fat fraction in the bone marrow. RESULTS Risdronate significantly inhibited adipogenic differentiation of rat BMSCs and suppressed RANKL expression in the adipocytes derived from the BMSCs in a concentration-dependent manner. In OVX rats, risdronate treatment significantly increased the BMD and decreased the fat content in the bone marrow. CONCLUSIONS Risdronate can effectively inhibit the adipogenic differentiation of rat BMSCs, decrease fat content in the bone marrow, and suppress the generation and function of osteoclasts by down-regulating the expression of RANKL, which can be an important mechanism underlying the therapeutic effect of risedronate against osteoporosis.
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Affiliation(s)
- 健 金
- 南方医科大学南方医院脊柱骨科,广东 广州 510515Department of Spine Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - 大地 金
- 南方医科大学第三附属医院脊柱骨科,广东 广州 510000Department of Spine Surgery, Third Affiliated Hospital, Southern Medical University, Guangzhou 510000, China
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19
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Arnautovic-Halimic A, Begic A, Agic-Bilalagic S, Basic A, Hadzimuratovic A, Ahmed-Jesenkovic D. Evaluation of Thyroid Hormone Status and Bone Density Ratio in Euthyroid Postmenopausal Women in Early and Late Stage of Bone Loss. Mater Sociomed 2019; 31:115-118. [PMID: 31452636 PMCID: PMC6690304 DOI: 10.5455/msm.2019.31.115-118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introduction: Osteoporosis is a consequence of reduction in bone mass and disorders of bone structure, which makes the bones prone to fractures. Physiological variations of thyroid-stimulating hormone (TSH) may be an early indicator of the predisposing basis of the emergence of osteoporosis. Aim: To evaluate the thyroid hormone status and bone density ratio in euthyroid postmenopausal women in early and late stage of bone loss. Methods: The research is an observational, intersected, controlled study involving postmenopausal women admitted to the Clinic for Nuclear medicine and endocrinology of the Clinical Center University of Sarajevo (CCUS). The study included a total of 120 postmenopausal subjects divided into two groups. First group included 60 postmenopausal patients with osteoporosis, 30 of them were at the early stage of postmenopause, and 30 were in the late postmenopausal phase. The second group consisted of 60 postmenopausal patients with preserved bone mass, 30 of which were in the early stage of postmenopause and 30 in the late postmenopausal phase. For all patients included in the study follicle-stimulating hormone (FSH), TSH, free thyroxine (FT4), free triiodothyronine (FT3) were analyzed. Results: The mean duration of the postmenopausal period was statistically significantly higher in the group of women with osteoporosis (11.4 ± 1.1 years). The mean values of FSH were statistically significantly higher in the group of women with osteoporosis (54.0 ± 2.6 IU / L). The mean level of TSH and FT3 did not statistically significantly differ in the group of women with osteoporosis compared to the control group of women. The mean FT4 level in women with osteoporosis was statistically significantly lower (14.7 ± 0.29 pmol / L) compared to the control group of women (15.95 ± 0.3 pmol / L) (p = 0.004). Conclusion: In our examined group, the FT4 patient (mean) was significantly lower in the serum of women with osteoporosis compared to subjects with preserved bone mass. It would be most effective to recognize risk factors in order to influence them on time, and to alleviate and slow down the consequences of osteoporosis. One of these possible factors is the hormonal status of the thyroid gland, that is, TSH whose physiological variations may be an early indicator of the predisposing basis for the emergence of osteoporosis. The frequency and prevalence of these medical problems require additional research, and it is also a great challenge to understand the effects of thyroid hormone on bone tissue.
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Affiliation(s)
- Ajla Arnautovic-Halimic
- Clinic for Nuclear medicine and endocrinology, Clinical Center University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Amela Begic
- Clinic for Nuclear medicine and endocrinology, Clinical Center University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Selma Agic-Bilalagic
- Clinic for Nuclear medicine and endocrinology, Clinical Center University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Amila Basic
- Clinic for Nuclear medicine and endocrinology, Clinical Center University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | | | - Dzan Ahmed-Jesenkovic
- Department for Biostatistics and epidemiology, Faculty of Medicine, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
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20
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Liang X, Hou Z, Xie Y, Yan F, Li S, Zhu X, Cai L. Icariin promotes osteogenic differentiation of bone marrow stromal cells and prevents bone loss in OVX mice via activating autophagy. J Cell Biochem 2019; 120:13121-13132. [PMID: 30887562 DOI: 10.1002/jcb.28585] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/27/2019] [Accepted: 01/30/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Xiaoxiao Liang
- Department of Orthopaedic Surgery Zhongnan Hospital of Wuhan University Wuhan China
| | - Zhiqiang Hou
- Department of Orthopaedic Surgery Zhongnan Hospital of Wuhan University Wuhan China
| | - Yuanlong Xie
- Department of Orthopaedic Surgery Zhongnan Hospital of Wuhan University Wuhan China
| | - Feifei Yan
- Department of Orthopaedic Surgery Zhongnan Hospital of Wuhan University Wuhan China
| | - Sisi Li
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science Huazhong University of Science and Technology Wuhan China
| | - Xiaobin Zhu
- Department of Orthopaedic Surgery Zhongnan Hospital of Wuhan University Wuhan China
| | - Lin Cai
- Department of Orthopaedic Surgery Zhongnan Hospital of Wuhan University Wuhan China
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21
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Jeong HJ, Kim MH, Kim H, Kim HY, Nam SY, Han NR, Lee B, Cho H, Moon PD, Kim HM. PCE17 and its active compounds exert an anti-osteoporotic effect through the regulation of receptor activator of nuclear factor-κB ligand in ovariectomized mice. J Food Biochem 2018. [DOI: 10.1111/jfbc.12561] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hyun-Ja Jeong
- Department of Food Science & Technology; Hoseo University, 20, Hoseo-ro 79beon-gil, Baebang-eup; Asan Chungcheongnam-do 31499 Republic of Korea
| | - Min-Ho Kim
- Department of Computer Aided Mechanical Engineering; Sohae Collage; Gunsan Jeonbuk 573-717 Republic of Korea
| | - Hyeongjin Kim
- Department of Science in Korean Medicine, Graduate School; Kyung Hee University; Seoul 02447 Republic of Korea
| | - Hee-Yun Kim
- Department of Pharmacology; College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu; Seoul 130-701 Republic of Korea
| | - Sun-Young Nam
- Department of Pharmacology; College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu; Seoul 130-701 Republic of Korea
| | - Na-Ra Han
- Department of Pharmacology; College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu; Seoul 130-701 Republic of Korea
| | - Boyoung Lee
- LG Household & Healthcare Research Park; Daejeon 34114 Republic of Korea
| | - Hosong Cho
- LG Household & Healthcare Research Park; Daejeon 34114 Republic of Korea
| | - Phil-Dong Moon
- Department of Pharmacology; College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu; Seoul 130-701 Republic of Korea
| | - Hyung-Min Kim
- Department of Science in Korean Medicine, Graduate School; Kyung Hee University; Seoul 02447 Republic of Korea
- Department of Pharmacology; College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu; Seoul 130-701 Republic of Korea
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22
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Knight MN, Karuppaiah K, Lowe M, Mohanty S, Zondervan RL, Bell S, Ahn J, Hankenson KD. R-spondin-2 is a Wnt agonist that regulates osteoblast activity and bone mass. Bone Res 2018; 6:24. [PMID: 30131881 PMCID: PMC6089978 DOI: 10.1038/s41413-018-0026-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 03/28/2018] [Accepted: 06/26/2018] [Indexed: 12/16/2022] Open
Abstract
The R-spondin family of proteins are Wnt agonists, and the complete embryonic disruption of Rspo2 results in skeletal developmental defects that recapitulate the phenotype observed with Lrp5/6 deficiency. Previous work has shown that R-spondin-2 (Rspo2, RSPO2) is both highly expressed in Wnt-stimulated pre-osteoblasts and its overexpression induces osteoblast differentiation in the same cells, supporting its putative role as a positive autocrine regulator of osteoblastogenesis. However, the role of Rspo2 in regulating osteoblastogenesis and bone formation in postnatal bone has not been explored. Here we show that limb-bud progenitor cells from Rspo2 knockout mice undergo reduced mineralization during osteoblastogenesis in vitro and have a corresponding alteration in their osteogenic gene expression profile. We also generated the first Rspo2 conditional knockout (Rspo2floxed) mouse and disrupted Rspo2 expression in osteoblast-lineage cells by crossing to the Osteocalcin-Cre mouse line (Ocn-Cre + Rspo2f/f). Ocn-Cre + Rspo2f/f male and female mice at 1, 3, and 6 months were examined. Ocn-Cre + Rspo2f/f mice are decreased in overall body size compared to their control littermates and have decreased bone mass. Histomorphometric analysis of 1-month-old mice revealed a similar number of osteoblasts and mineralizing surface per bone surface with a simultaneous decrease in mineral apposition and bone formation rates. Consistent with this observation, serum osteocalcin in 3-month-old Ocn-Cre + Rspo2f/f was reduced, and bone marrow-mesenchymal stem cells from Ocn-Cre + Rspo2f/f mice undergo less mineralization in vitro. Finally, gene expression analysis and immunohistochemistry of mature bone shows reduced beta-catenin signaling in Ocn-Cre + Rspo2f/f. Overall, RSPO2 reduces osteoblastogenesis and mineralization, leading to reduced bone mass. A loss of R-spondin-2 reduces osteoblastogenesis (production of osteoblasts, the cells from which bone develops) and mineralization, thereby leading to decreased bone mass in adults. R-spondin-2 is one of a family of four proteins that are expressed in the developing mouse limb as well as other tissues; each R-spondin family member exerts a different functional effect. R-spondins clearly influence several aspects of skeletal biology, but their specific roles—especially in postnatal bone—remained to be elucidated. A team headed by Kurt Hankenson at the University of Michigan Medical School investigated the role of R-spondin-2 in osteoblastogenesis, both in vitro and in vivo, using a mouse model. For the first time, the team was able to demonstrate that R-spondin-2 promotes osteoblastogenesis, bone development, and consequent bone mass growth in adult mice.
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Affiliation(s)
- M Noelle Knight
- 1Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Kannan Karuppaiah
- 2Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, USA
| | - Michele Lowe
- 2Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, USA
| | - Sarthak Mohanty
- 1Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Robert L Zondervan
- 2Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, USA
| | - Sheila Bell
- 3Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, USA
| | - Jaimo Ahn
- 1Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Kurt D Hankenson
- 1Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.,2Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, USA
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23
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Akkawi I, Zmerly H. Osteoporosis: Current Concepts. JOINTS 2018; 6:122-127. [PMID: 30051110 PMCID: PMC6059859 DOI: 10.1055/s-0038-1660790] [Citation(s) in RCA: 172] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 05/02/2018] [Indexed: 01/13/2023]
Abstract
Osteoporosis is a worldwide disease characterized by reduction of bone mass and alteration of bone architecture resulting in increased bone fragility and increased fracture risk. Causes of osteoporosis include increasing age, female sex, postmenopausal status, hypogonadism or premature ovarian failure, low body mass index, ethnic background, rheumatoid arthritis, low bone mineral density (BMD), vitamin D deficiency, low calcium intake, hyperkyphosis, current smoking, alcohol abuse, immobilization, and long-term use of certain medications. The diagnosis of osteoporosis is established by measurement of BMD of the hip and spine using dual energy X-ray absorptiometry. According to the World Health Organization criteria, osteoporosis is defined as a BMD that lies 2.5 standard deviation or more below the average value for young healthy women. Bone turnover biomarker detection may be useful in monitoring osteoporosis treatment and assessing fracture risk but not for diagnosis of osteoporosis. Management of osteoporosis consists of nonpharmacological interventions, which are recommended for all subjects, and pharmacological therapy in all postmenopausal women who have had an osteoporotic fracture or have BMD values consistent with osteoporosis.
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Affiliation(s)
- Ibrahim Akkawi
- Orthopaedics and Traumatology Unit, Villa Erbosa Hospital, Bologna, Italy
| | - Hassan Zmerly
- Orthopaedics and Traumatology Unit, Villa Erbosa Hospital, Bologna, Italy
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24
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Diniz-Freitas M, Fernández-Feijoo J, Diz Dios P, Pousa X, Limeres J. Denosumab-related osteonecrosis of the jaw following non-surgical periodontal therapy: A case report. J Clin Periodontol 2018; 45:570-577. [DOI: 10.1111/jcpe.12882] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2018] [Indexed: 01/28/2023]
Affiliation(s)
- Márcio Diniz-Freitas
- Medical-Surgical Dentistry Research Group (OMEQUI); Health Research Institute of Santiago de Compostela (IDIS); University of Santiago de Compostela (USC); Santiago de Compostela Spain
| | - Javier Fernández-Feijoo
- Medical-Surgical Dentistry Research Group (OMEQUI); Health Research Institute of Santiago de Compostela (IDIS); University of Santiago de Compostela (USC); Santiago de Compostela Spain
| | - Pedro Diz Dios
- Medical-Surgical Dentistry Research Group (OMEQUI); Health Research Institute of Santiago de Compostela (IDIS); University of Santiago de Compostela (USC); Santiago de Compostela Spain
| | - Xiana Pousa
- Periodontology Unit; School of Medicine and Dentistry; University of Santiago de Compostela (USC); Santiago de Compostela Spain
| | - Jacobo Limeres
- Medical-Surgical Dentistry Research Group (OMEQUI); Health Research Institute of Santiago de Compostela (IDIS); University of Santiago de Compostela (USC); Santiago de Compostela Spain
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Ma Y, Qi M, An Y, Zhang L, Yang R, Doro DH, Liu W, Jin Y. Autophagy controls mesenchymal stem cell properties and senescence during bone aging. Aging Cell 2018; 17. [PMID: 29210174 PMCID: PMC5770781 DOI: 10.1111/acel.12709] [Citation(s) in RCA: 221] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2017] [Indexed: 12/22/2022] Open
Abstract
Bone marrow‐derived mesenchymal stem cells (BMMSCs) exhibit degenerative changes, including imbalanced differentiation and reduced proliferation during aging, that contribute to age‐related bone loss. We demonstrate here that autophagy is significantly reduced in aged BMMSCs compared with young BMMSCs. The autophagy inhibitor 3‐methyladenine (3‐MA) could turn young BMMSCs into a relatively aged state by reducing their osteogenic differentiation and proliferation capacity and enhancing their adipogenic differentiation capacity. Accordingly, the autophagy activator rapamycin could restore the biological properties of aged BMMSCs by increasing osteogenic differentiation and proliferation capacity and decreasing adipogenic differentiation capacity. Possible underlying mechanisms were explored, and the analysis revealed that autophagy could affect reactive oxygen species and p53 levels, thus regulating biological properties of BMMSCs. In an in vivo study, we found that activation of autophagy restored bone loss in aged mice. In conclusion, our results suggest that autophagy plays a pivotal role in the aging of BMMSCs, and activation of autophagy could partially reverse this aging and may represent a potential therapeutic avenue to clinically treat age‐related bone loss.
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Affiliation(s)
- Yang Ma
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases; Center for Tissue Engineering; School of Stomatology; The Fourth Military Medical University; Xi'an Shaanxi China
- Department of Craniofacial Development and Stem Cell Biology; Dental Institute; Kings College London; London UK
| | - Meng Qi
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases; Center for Tissue Engineering; School of Stomatology; The Fourth Military Medical University; Xi'an Shaanxi China
| | - Ying An
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases; Center for Tissue Engineering; School of Stomatology; The Fourth Military Medical University; Xi'an Shaanxi China
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases; Department of Periodontology; School of Stomatology; The Fourth Military Medical University; Xi'an Shaanxi China
| | - Liqiang Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases; Center for Tissue Engineering; School of Stomatology; The Fourth Military Medical University; Xi'an Shaanxi China
- Xi'an Institute of Tissue Engineering & Regenerative Medicine; Xi'an Shaanxi China
| | - Rui Yang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases; Center for Tissue Engineering; School of Stomatology; The Fourth Military Medical University; Xi'an Shaanxi China
- Department of Stomatology; PLA Army General Hospital; Beijing China
| | - Daniel H Doro
- Department of Craniofacial Development and Stem Cell Biology; Dental Institute; Kings College London; London UK
| | - Wenjia Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases; Center for Tissue Engineering; School of Stomatology; The Fourth Military Medical University; Xi'an Shaanxi China
- Xi'an Institute of Tissue Engineering & Regenerative Medicine; Xi'an Shaanxi China
| | - Yan Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases; Center for Tissue Engineering; School of Stomatology; The Fourth Military Medical University; Xi'an Shaanxi China
- Xi'an Institute of Tissue Engineering & Regenerative Medicine; Xi'an Shaanxi China
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26
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Mesenchymal Stem Cells: Cell Fate Decision to Osteoblast or Adipocyte and Application in Osteoporosis Treatment. Int J Mol Sci 2018; 19:ijms19020360. [PMID: 29370110 PMCID: PMC5855582 DOI: 10.3390/ijms19020360] [Citation(s) in RCA: 240] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/13/2018] [Accepted: 01/22/2018] [Indexed: 12/11/2022] Open
Abstract
Osteoporosis is a progressive skeletal disease characterized by decreased bone mass and degraded bone microstructure, which leads to increased bone fragility and risks of bone fracture. Osteoporosis is generally age related and has become a major disease of the world. Uncovering the molecular mechanisms underlying osteoporosis and developing effective prevention and therapy methods has great significance for human health. Mesenchymal stem cells (MSCs) are multipotent cells capable of differentiating into osteoblasts, adipocytes, or chondrocytes, and have become the favorite source of cell-based therapy. Evidence shows that during osteoporosis, a shift of the cell differentiation of MSCs to adipocytes rather than osteoblasts partly contributes to osteoporosis. Thus, uncovering the molecular mechanisms of the osteoblast or adipocyte differentiation of MSCs will provide more understanding of MSCs and perhaps new methods of osteoporosis treatment. The MSCs have been applied to both preclinical and clinical studies in osteoporosis treatment. Here, we review the recent advances in understanding the molecular mechanisms regulating osteoblast differentiation and adipocyte differentiation of MSCs and highlight the therapeutic application studies of MSCs in osteoporosis treatment. This will provide researchers with new insights into the development and treatment of osteoporosis.
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Pavone V, Testa G, Giardina SMC, Vescio A, Restivo DA, Sessa G. Pharmacological Therapy of Osteoporosis: A Systematic Current Review of Literature. Front Pharmacol 2017; 8:803. [PMID: 29163183 PMCID: PMC5682013 DOI: 10.3389/fphar.2017.00803] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 10/24/2017] [Indexed: 01/22/2023] Open
Abstract
Osteoporosis is the most common bone disease affecting millions of people worldwide, particularly in elderly or in post-menopausal women. The pathogenesis is useful to understand the possible mechanism of action of anti-osteoporotic drugs. Early diagnosis, possible with several laboratory and instrumental tests, allows a major accuracy in the choice of anti-osteoporosis drugs. Treatment of osteoporosis is strictly related to severity of pathology and consists on prevention of fragility fractures with a correct lifestyle and adequate nutritional supplements, and use of pharmacological therapy, started in patients with osteopenia and history of fragility fracture of the hip or spine. The purpose of this review is to focus on main current pharmacological products to treat osteoporotic patients.
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Affiliation(s)
- Vito Pavone
- Dipartimento di Chirurgia Generale e Specialità Medico-Chirurgiche, Sezione di Ortopedia, A.O.U.P. Vittorio Emanuele, Università di Catania, Catania, Italy
| | - Gianluca Testa
- Dipartimento di Chirurgia Generale e Specialità Medico-Chirurgiche, Sezione di Ortopedia, A.O.U.P. Vittorio Emanuele, Università di Catania, Catania, Italy
| | - Serena M. C. Giardina
- Dipartimento di Chirurgia Generale e Specialità Medico-Chirurgiche, Sezione di Ortopedia, A.O.U.P. Vittorio Emanuele, Università di Catania, Catania, Italy
| | - Andrea Vescio
- Dipartimento di Chirurgia Generale e Specialità Medico-Chirurgiche, Sezione di Ortopedia, A.O.U.P. Vittorio Emanuele, Università di Catania, Catania, Italy
| | - Domenico A. Restivo
- Neurologic Unit, Department of Internal Medicine, Nuovo “Garibaldi” Hospital, Catania, Italy
| | - Giuseppe Sessa
- Dipartimento di Chirurgia Generale e Specialità Medico-Chirurgiche, Sezione di Ortopedia, A.O.U.P. Vittorio Emanuele, Università di Catania, Catania, Italy
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Qi M, Zhang L, Ma Y, Shuai Y, Li L, Luo K, Liu W, Jin Y. Autophagy Maintains the Function of Bone Marrow Mesenchymal Stem Cells to Prevent Estrogen Deficiency-Induced Osteoporosis. Theranostics 2017; 7:4498-4516. [PMID: 29158841 PMCID: PMC5695145 DOI: 10.7150/thno.17949] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 09/11/2017] [Indexed: 12/13/2022] Open
Abstract
Rationale: The impaired function of endogenous bone marrow mesenchymal stem cells (BMMSCs) is a determinant in the development of osteoporosis (OP). Recent researches have proved that autophagy plays an important role in maintenance of skeletal phenotype. However, whether autophagy affects the development of OP through regulating the function of BMMSCs remains elusive. Methods: Ovariectomy (OVX)-induced OP model and sham model were established in 8-week-old C57 mice. The differentiation and immunoregulation properties of BMMSCs from two models were examined by osteogenic/adipogenic induction in vitro and treatment of a dextran sulfate sodium (DSS)-induced mice colitis model in vivo. We evaluated autophagy activity in sham and OVX BMMSCs by quantitative real time-polymerase chain reaction (qRT-PCR), western blotting, laser confocal microscopy and transmission electron microscopy (TEM). Finally, to testify the effects of rapamycin, short hairpin RNA (shRNA) -BECN1 (shBECN1) and shRNA-ATG5 (shATG5), we performed Alizarin Red staining and Oil Red O staining to detect lineage differentiations of BMMSCs, and carried out micro-CT, calcein staining and Oil Red O staining to assess the skeletal phenotype. Results: BMMSCs from OVX-induced OP model mice exhibited decreased osteogenic differentiation, increased adipogenic differentiation and impaired immunoregulatory capacity. Furthermore, autophagy decreased both in bone marrow and BMMSCs of osteoporotic mice. Importantly, regulation of autophagy directly affects the functions of BMMSCs, including differentiation and immunoregulatory capacities. Moreover, treatment with rapamycin rescued the function of endogenous BMMSCs and attenuated the osteoporotic phenotype in OVX mice. Conclusion: Our findings suggest that autophagy regulates the regenerative function of BMMSCs and controls the development of OP. The restoration of autophagy by rapamycin may provide an effective therapeutic method for osteoporosis.
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Affiliation(s)
- Meng Qi
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Liqiang Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Yang Ma
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Yi Shuai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Liya Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Kefu Luo
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Wenjia Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Yan Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
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Bowden SA, Mahan JD. Zoledronic acid in pediatric metabolic bone disorders. Transl Pediatr 2017; 6:256-268. [PMID: 29184807 PMCID: PMC5682380 DOI: 10.21037/tp.2017.09.10] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 09/19/2017] [Indexed: 01/06/2023] Open
Abstract
Zoledronic acid (ZA), a highly potent intravenous bisphosphonate (BP), has been increasingly used in children with primary and secondary osteoporosis due to its convenience of shorter infusion time and less frequent dosing compared to pamidronate. Many studies have also demonstrated beneficial effects of ZA in other conditions such as hypercalcemia of malignancy, fibrous dysplasia (FD), chemotherapy-related osteonecrosis (ON) and metastatic bone disease. This review summarizes pharmacologic properties, mechanism of action, dosing regimen, and therapeutic outcomes of ZA in a variety of metabolic bone disorders in children. Several potential novel uses of ZA are also discussed. Safety concerns and adverse effects are also highlighted.
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Affiliation(s)
- Sasigarn A. Bowden
- Division of Endocrinology, Department of Pediatrics, Nationwide Children’s Hospital/the Ohio State University College of Medicine, Columbus, Ohio, USA
| | - John D. Mahan
- Division of Nephrology, Department of Pediatrics, Nationwide Children’s Hospital/the Ohio State University College of Medicine, Columbus, Ohio, USA
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