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Thuong LHH, Hsu CJ, Chen HT, Kuo YH, Tang CH. Caffeic acid derivative MPMCA suppresses osteoclastogenesis and facilitates osteoclast apoptosis: implications for the treatment of bone loss disorders. Aging (Albany NY) 2024; 16:11926-11938. [PMID: 39189924 PMCID: PMC11386915 DOI: 10.18632/aging.206067] [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: 03/13/2024] [Accepted: 07/18/2024] [Indexed: 08/28/2024]
Abstract
Osteoclast activity plays a crucial role in the pathological mechanisms of osteoporosis and bone remodeling. The treatment of these disorders involves the use of pharmacological medicines that work by inhibiting the activity of osteoclasts. Nevertheless, the prevalent and infrequent negative consequences of current antiresorptive and bone anabolic treatments pose significant drawbacks, hence restricting their prolonged administration in patients, particularly those who are elderly and/or suffer from many medical conditions. We are currently in the process of creating a new molecule called N-(4-methoxyphen) methyl caffeamide (MPMCA), which is a derivative of caffeic acid. This compound has shown potential in preventing the production of osteoclasts and causing existing osteoclasts to undergo cell apoptosis. Our investigation discovered that MPMCA hinders osteoclast function via suppressing the MAPK pathways. The expectation is that the findings of this study will stimulate the advancement of a novel approach to treating anti-resorption.
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Affiliation(s)
- Le Huynh Hoai Thuong
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Chin-Jung Hsu
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Hsien-Te Chen
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
- Department of Sports Medicine, China Medical University, Taichung, Taiwan
| | - Yueh-Hsiung Kuo
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung, Taiwan
- Chinese Medicine Research Center, China Medical University, Taichung, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
- Chinese Medicine Research Center, China Medical University, Taichung, Taiwan
- Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan
- Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
- Department of Medical Research, China Medical University Hsinchu Hospital, Hsinchu, Taiwan
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2
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Lee S, Kim YG, Jung HI, Lim JS, Nam KC, Choi HS, Kwak BS. Bone-on-a-chip simulating bone metastasis in osteoporosis. Biofabrication 2024; 16:045025. [PMID: 39116896 DOI: 10.1088/1758-5090/ad6cf9] [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: 06/03/2024] [Accepted: 08/08/2024] [Indexed: 08/10/2024]
Abstract
Osteoporosis is the most common bone disorder, which is a highly dangerous condition that can promote bone metastases. As the current treatment for osteoporosis involves long-term medication therapy and a cure for bone metastasis is not known, ongoing efforts are required for drug development for osteoporosis. Animal experiments, traditionally used for drug development, raise ethical concerns and are expensive and time-consuming. Organ-on-a-chip technology is being developed as a tool to supplement such animal models. In this study, we developed a bone-on-a-chip by co-culturing osteoblasts, osteocytes, and osteoclasts in an extracellular matrix environment that can represent normal bone, osteopenia, and osteoporotic conditions. We then simulated bone metastases using breast cancer cells in three different bone conditions and observed that bone metastases were most active in osteoporotic conditions. Furthermore, it was revealed that the promotion of bone metastasis in osteoporotic conditions is due to increased vascular permeability. The bone-on-a-chip developed in this study can serve as a platform to complement animal models for drug development for osteoporosis and bone metastasis.
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Affiliation(s)
- Sunghan Lee
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seadaemun-gu, Seoul 03722, Republic of Korea
- College of Medicine, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyangsi, Gyeonggi-do 10326, Republic of Korea
| | - Young Gyun Kim
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seadaemun-gu, Seoul 03722, Republic of Korea
- College of Medicine, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyangsi, Gyeonggi-do 10326, Republic of Korea
| | - Hyo-Il Jung
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seadaemun-gu, Seoul 03722, Republic of Korea
- The DABOM Inc., 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Ji Seok Lim
- School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si, Gyeongsanbuk-do 38541, Republic of Korea
- MediSphere Inc., 280, Daehak-ro, Gyeongsan-si, Gyeongsangbuk-do 38541, Republic of Korea
| | - Ki Chang Nam
- College of Medicine, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyangsi, Gyeonggi-do 10326, Republic of Korea
| | - Han Seok Choi
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Dongguk University Ilsan Hospital, 27 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Republic of Korea
| | - Bong Seop Kwak
- College of Medicine, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyangsi, Gyeonggi-do 10326, Republic of Korea
- MediSphere Inc., 280, Daehak-ro, Gyeongsan-si, Gyeongsangbuk-do 38541, Republic of Korea
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3
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Kundra S, Kaur R, Pasricha C, Kumari P, Gurjeet Singh T, Singh R. Pathological insights into activin A: Molecular underpinnings and therapeutic prospects in various diseases. Int Immunopharmacol 2024; 139:112709. [PMID: 39032467 DOI: 10.1016/j.intimp.2024.112709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 05/14/2024] [Accepted: 07/15/2024] [Indexed: 07/23/2024]
Abstract
Activin A (Act A) is a member of the TGFβ (transforming growth factor β) superfamily. It communicates via the Suppressor of Mothers against Decapentaplegic Homolog (SMAD2/3) proteins which govern processes such as cell proliferation, wound healing, apoptosis, and metabolism. Act A produces its action by attaching to activin receptor type IIA (ActRIIA) or activin receptor type IIB (ActRIIB). Increasing circulating Act A increases ActRII signalling, which on phosphorylation initiates the ALK4 (activin receptor-like kinase 4) type 1 receptor which further turns on the SMAD pathway and hinders cell functioning. Once triggered, this route leads to gene transcription, differentiation, apoptosis, and extracellular matrix (ECM) formation. Act A also governs the immunological and inflammatory responses of the body, as well as cell death. Moreover, Act A levels have been observed to elevate in several disorders like renal fibrosis, CKD, asthma, NAFLD, cardiovascular diseases, cancer, inflammatory conditions etc. Here, we provide an update on the recent studies relevant to the role of Act A in the modulation of various pathological disorders, giving an overview of the biology of Act A and its signalling pathways, and discuss the possibility of incorporating activin-A targeting as a novel therapeutic approach for the control of various disorders. Pathways such as SMAD signaling, in which SMAD moves to the nucleus by making a complex and leads to tissue fibrosis in CKD, STAT3, which drives renal fibroblast activity and the production of ECM, Kidney injury molecule (KIM-1) in the synthesis, deposition of ECM proteins, SERCA2a (sarcoplasmic reticulum Ca2+ ATPase) in cardiac dysfunction, and NF-κB (Nuclear factor kappa-light-chain-enhancer of activated B cells) in inflammation are involved in Act A signaling, have also been discussed.
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Affiliation(s)
- Sejal Kundra
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Rupinder Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Chirag Pasricha
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Pratima Kumari
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | | | - Ravinder Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
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Wang B, Zhao Y, Li Y, Tang C, He P, Liu X, Yao J, Chu C, Xu B. NIR-responsive injectable magnesium phosphate bone cement loaded with icariin promotes osteogenesis. J Mech Behav Biomed Mater 2024; 150:106256. [PMID: 38048713 DOI: 10.1016/j.jmbbm.2023.106256] [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: 09/16/2023] [Revised: 11/12/2023] [Accepted: 11/15/2023] [Indexed: 12/06/2023]
Abstract
There were defects like limited osteogenesis and fast drug release in traditional magnesium phosphate bone cement (MPC). In this study, we loaded icariin in a mesoporous nano silica container modified by polydopamine and then added it and citric acid into MPC (IHP-CA MPCs). The results indicate that IHP-CA MPCs have a long curing time, almost neutral pH value, excellent injectability, and compressive strength. In vitro experiments have shown that IHP-CA MPCs have good biocompatibility and bone promoting ability. These improvements provide feasible solutions and references for the clinical application of MPCs as implants.
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Affiliation(s)
- Bin Wang
- Department of Orthopedics, Jingling Hospital, Medicine College, Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Yanbin Zhao
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China; Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
| | - Yangyang Li
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China; Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
| | - Chengliang Tang
- Huadong Medical Institute of Biotechniques, Nanjing, 210002, Jiangsu, China
| | - Peng He
- Department of Orthopedics, Jingling Hospital, Medicine College, Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Xiaowei Liu
- Department of Orthopedics, Jingling Hospital, Medicine College, Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Junyan Yao
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China; Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
| | - Chenglin Chu
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China; Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China.
| | - Bin Xu
- Department of Orthopedics, Jingling Hospital, Medicine College, Nanjing University, Nanjing, 210002, Jiangsu, China.
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Li QL, Wu YX, Zhang YX, Mao J, Zhang ZX. Enhancing osteogenic differentiation of MC3T3-E1 cells during inflammation using UPPE/β-TCP/TTC composites via the Wnt/β-catenin pathway. RSC Adv 2024; 14:1527-1537. [PMID: 38179095 PMCID: PMC10763654 DOI: 10.1039/d3ra05529a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 12/19/2023] [Indexed: 01/06/2024] Open
Abstract
Periodontitis can lead to defects in the alveolar bone, thus increasing the demand for dependable biomaterials to repair these defects. This study aims to examine the pro-osteogenic and anti-bacterial properties of UPPE/β-TCP/TTC composites (composed of unsaturated polyphosphoester [UPPE], β-tricalcium phosphate [β-TCP], and tetracycline [TTC]) under an inflammatory condition. The morphology of MC3T3-E1 cells on the composite was examined using scanning electron microscopy. The toxicity of the composite to MC3T3-E1 cells was assessed using the Alamar-blue assay. The pro-osteogenic potential of the composite was assessed through ALP staining, ARS staining, RT-PCR, and WB. The antimicrobial properties of the composite were assessed using the zone inhibition assay. The results suggest that: (1) MC3T3-E1 cells exhibited stable adhesion to the surfaces of all four composite groups; (2) the UPPE/β-TCP/TTC composite demonstrated significantly lower toxicity to MC3T3-E1 cells; and (3) the UPPE/β-TCP/TTC composite had the most pronounced pro-osteogenic effect on MC3T3-E1 cells by activating the WNT/β-catenin pathway and displaying superior antibacterial properties. UPPE/β-TCP/TTC, as a biocomposite, has been shown to possess antibacterial properties and exhibit excellent potential in facilitating osteogenic differentiation of MC3T3-E1 cells.
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Affiliation(s)
- Qi-Lin Li
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration Wuhan 430022 China
| | - Ya-Xin Wu
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration Wuhan 430022 China
| | - Yu-Xiao Zhang
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration Wuhan 430022 China
| | - Jing Mao
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration Wuhan 430022 China
| | - Zhi-Xing Zhang
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030 China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration Wuhan 430022 China
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Xue C, Luo H, Wang L, Deng Q, Kui W, Da W, Chen L, Liu S, Xue Y, Yang J, Li L, Du W, Shi Q, Li X. Aconine attenuates osteoclast-mediated bone resorption and ferroptosis to improve osteoporosis via inhibiting NF-κB signaling. Front Endocrinol (Lausanne) 2023; 14:1234563. [PMID: 38034017 PMCID: PMC10682992 DOI: 10.3389/fendo.2023.1234563] [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: 06/27/2023] [Accepted: 10/27/2023] [Indexed: 12/02/2023] Open
Abstract
Osteoporosis (OP), a prevalent public health concern primarily caused by osteoclast-induced bone resorption, requires potential therapeutic interventions. Natural compounds show potential as therapeutics for postmenopausal OP. Emerging evidence from in vitro osteoclastogenesis assay suggests that aconine (AC) serves as an osteoclast differentiation regulator without causing cytotoxicity. However, the in vivo functions of AC in various OP models need clarification. To address this, we administered intraperitoneal injections of AC to ovariectomy (OVX)-induced OP mice for 8 weeks and found that AC effectively reversed the OP phenotype of OVX mice, leading to a reduction in vertebral bone loss and restoration of high bone turnover markers. Specifically, AC significantly suppressed osteoclastogenesis in vivo and in vitro by decreasing the expression of osteoclast-specific genes such as NFATc1, c-Fos, Cathepsin K, and Mmp9. Importantly, AC can regulate osteoclast ferroptosis by suppressing Gpx4 and upregulating Acsl4, which is achieved through inhibition of the phosphorylation of I-κB and p65 in the NF-κB signaling pathway. These findings suggest that AC is a potential therapeutic option for managing OP by suppressing NF-κB signaling-mediated osteoclast ferroptosis and formation.
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Affiliation(s)
- Chunchun Xue
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huan Luo
- Department of Pharmacy, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Libo Wang
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qing Deng
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wenyun Kui
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Weiwei Da
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lin Chen
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shuang Liu
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yongpeng Xue
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jiafan Yang
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lingxing Li
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wenlan Du
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qi Shi
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaofeng Li
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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7
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Hou J, Xu P, Zhong Y, Zhou Z, Zhang W. Interleukin-21 knockout reduces bone loss in ovariectomized mice by inhibiting osteoclastogenesis. Biosci Biotechnol Biochem 2023; 87:1265-1273. [PMID: 37708033 DOI: 10.1093/bbb/zbad103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 07/27/2023] [Indexed: 09/16/2023]
Abstract
Estrogen deficiency accelerates osteoporosis in elderly women. However, the role of IL-21 in postmenopausal osteoporosis remains unclear. Female wild-type (WT) C57BL/6 and IL-21 knockout (KO) mice were used for ovariectomy (OVX). Here, IL-21 levels were significantly increased in the serum and bone tissues of WT-OVX mice. The trabecular bone space of the femur was significantly increased, and the bone mass was reduced in OVX mice, accompanied by a significant decrease in the maximum load, energy absorption, and elastic modulus indices. In contrast, IL-21 knockout effectively alleviated the effects of OVX on bone mass. Serum TRACP-5b and receptor activator of nuclear factor kappa B ligand (RANKL) levels and osteoclastogenesis were significantly higher in OVX mice than in sham mice, while serum TRACP-5b and RANKL levels and osteoclastogenesis were significantly decreased in IL-21 KO + OVX mice compared to WT + OVX mice. IL-21 knockdown reduces TRACP-5b, RANKL, and osteoclastogenesis, effectively preventing bone resorption and alleviating the progression of OVX-induced osteoporosis.
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Affiliation(s)
- Junlong Hou
- Department of Orthopaedics, Jieyang People's Hospital, Jieyang, China
| | - Ping Xu
- Spinal Trauma Area 2, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Yanheng Zhong
- Spinal Trauma Area 2, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Zhigang Zhou
- Spinal Trauma Area 2, The First Affiliated Hospital of Jinan University, Guangzhou, China
- Department of Orthopaedics, The Fifth Affiliated Hospital of Jinan University, Heyuan, China
| | - Wencai Zhang
- Spinal Trauma Area 2, The First Affiliated Hospital of Jinan University, Guangzhou, China
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Kim S, Lee H, Hong J, Kim SHL, Kwon E, Park TH, Hwang NS. Bone-Targeted Delivery of Cell-Penetrating-RUNX2 Fusion Protein in Osteoporosis Model. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2301570. [PMID: 37574255 PMCID: PMC10558633 DOI: 10.1002/advs.202301570] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 07/20/2023] [Indexed: 08/15/2023]
Abstract
The onset of osteoporosis leads to a gradual decrease in bone density due to an imbalance between bone formation and resorption. To achieve optimal drug efficacy with minimal side effects, targeted drug delivery to the bone is necessary. Previous studies have utilized peptides that bind to hydroxyapatite, a mineral component of bone, for bone-targeted drug delivery. In this study, a hydroxyapatite binding (HAB) tag is fused to 30Kc19α-Runt-related transcription factor 2 (RUNX2) for bone-targeting. This recombinant protein can penetrate the nucleus of human mesenchymal stem cells (hMSCs) and act as a master transcription factor for osteogenesis. The HAB tag increases the binding affinity of 30Kc19α-RUNX2 to mineral deposition in mature osteoblasts and bone tissue, without affecting its osteogenic induction capability. In the osteoporosis mouse model, intravenous injection of HAB-30Kc19α-RUNX2 results in preferential accumulation in the femur and promotes bone formation while reducing toxicity in the spleen. These findings suggest that HAB-30Kc19α-RUNX2 may be a promising candidate for bone-targeted therapy in osteoporosis.
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Affiliation(s)
- Seoyeon Kim
- School of Chemical and Biological EngineeringInstitute of Chemical ProcessesSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Haein Lee
- School of Chemical and Biological EngineeringInstitute of Chemical ProcessesSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Jiyeon Hong
- School of Chemical and Biological EngineeringInstitute of Chemical ProcessesSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Seung Hyun L. Kim
- Interdisciplinary Program in BioengineeringSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Euntaek Kwon
- Interdisciplinary Program in BioengineeringSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Tai Hyun Park
- School of Chemical and Biological EngineeringInstitute of Chemical ProcessesSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
- Interdisciplinary Program in BioengineeringSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
- BioMAX/N‐Bio InstituteInstitute of BioEngineerigSeoul National University1 Gwanakro, Gwanak‐guSeoul08826Republic of Korea
- Department of Nutritional Science and Food ManagementEwha Womans University52, Ewhayeodae‐gil, Seodaemun‐guSeoul03760Republic of Korea
| | - Nathaniel S. Hwang
- School of Chemical and Biological EngineeringInstitute of Chemical ProcessesSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
- Interdisciplinary Program in BioengineeringSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
- BioMAX/N‐Bio InstituteInstitute of BioEngineerigSeoul National University1 Gwanakro, Gwanak‐guSeoul08826Republic of Korea
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9
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Maciel GBM, Maciel RM, Danesi CC. Bone cells and their role in physiological remodeling. Mol Biol Rep 2023; 50:2857-2863. [PMID: 36609750 DOI: 10.1007/s11033-022-08190-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 12/07/2022] [Indexed: 01/09/2023]
Abstract
PURPOSE This work compiles the characteristics of bone cells involved in the physiological bone remodeling. METHODS A narrative review of the literature was performed. RESULTS Remodeling is a different process from modeling. Remodeling allows old or damaged bone tissue to be renewed, ensuring the maintenance of bone fracture resistance, as well as maintaining calcium and phosphorus homeostasis. We present the role of osteoclasts, a multinucleated cell with hematopoietic origin responsible for resorbing bone. The formation of osteoclasts depends on the cytokines macrophage colony stimulating factor (M-CSF) and receptor activator of NF-kB ligand (RANKL) and can be blocked by osteoprotegerin. Furthermore, this review highlights the features of osteoblasts, polarized cubic cells of mesenchymal origin that deposit bone and also covers osteocytes and bone lining cells. This review presents the five fundamental phases of bone remodeling and addresses aspects of its regulation through hormones and growth factors. CONCLUSIONS Knowledge of the current concepts of physiological bone remodeling is necessary for the study of the different pathologies that affect the bone tissue and thus helps in the search for new therapies.
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Affiliation(s)
- Gabriel Bassan Marinho Maciel
- Postgraduate Program in Dental Sciences, Federal University of Santa Maria, Santa Maria, RS, Brazil. .,Department of Pathology, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, 97015-900, RS, Brazil.
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10
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Research progress on the role of extracellular vesicles derived from aging cells in osteoporosis. Biosci Rep 2023; 43:232531. [PMID: 36734979 PMCID: PMC9939407 DOI: 10.1042/bsr20221775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 01/16/2023] [Accepted: 02/01/2023] [Indexed: 02/04/2023] Open
Abstract
The occurrence and development of many diseases are highly associated with the aging of the body. Among them, osteoporosis (OP) is a common age-related disease that tends to occur in the elderly population and is highly related to the aging factors in the body. In the process of aging transmission, the senescence-related secretory phenotype (SASP) can convey the information about aging through the paracrine pathway and endocrine mechanism through the extracellular vesicles (EVs) connected to SASP. EVs can be used as a way of conduction to join the connection between micro-environmental aging and age-related illnesses. EVs are double-layer membranous vesicles separated or secreted from the cell membrane, which mainly include microvesicles (MVs) and exosomes. Vesicular bodies secreted by this exocrine form carry a variety of cell-derived related substances (including a variety of proteins, lipids, DNA, mRNA, miRNAs, etc). These substances are mainly concentrated in human body fluids, especially can be transported to all parts of the body with the blood circulation system, and participate in the interactions between cells. Osteoporosis is closely associated with aging and aging cells, suggesting EVs were active in this pathological process. In this article, the basic mechanisms of aging cells in the occurrence and progression of osteoporosis through EVs will be discussed, to explore the connection between aging and osteoporosis, thereby providing a new perspective on the occurrence and development as well as prevention and treatment of osteoporosis.
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11
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Zhang L, Fang Z, Cheng G, He M, Lin Y. A novel Hoxd13 mutation causes synpolydactyly and promotes osteoclast differentiation by regulating pSmad5/p65/c-Fos/Rank axis. Cell Death Dis 2023; 14:145. [PMID: 36804539 PMCID: PMC9941469 DOI: 10.1038/s41419-023-05681-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 02/11/2023] [Accepted: 02/13/2023] [Indexed: 02/22/2023]
Abstract
The mutations of HOXD13 gene have been involved in synpolydactyly (SPD), and the polyalanine extension mutation of Hoxd13 gene could lead to SPD in mice. In this study, a novel missense mutation of Hoxd13 (NM_000523: exon2: c.G917T: p.R306L) was identified in a Chinese family with SPD. The mice carrying the corresponding Hoxd13mutation were generated. The results showed that the homozygous mutation of Hoxd13 also caused SPD, but heterozygous mutation did not affect limbs development, which was different from that of SPD patients. With the increasing generation, the mice with homozygous Hoxd13 mutation presented more severe syndactyly. Western blotting showed that this mutation did not affect the protein expression of Hoxd13, suggesting that this mutation did not result in haploinsufficiency. Further analysis demonstrated that this homozygous Hoxd13mutation promoted osteoclast differentiation and bone loss, and enhanced the mRNA and protein expression of osteoclast-related genes Rank, c-Fos, and p65. Meanwhile, this homozygous Hoxd13 mutation elevated the level of phosphorylated Smad5 (pSmad5). Co-immunoprecipitation verified that this mutation attenuated the interaction between pSmad5 and HOXD13, suggesting that this mutation released more pSmad5. Inhibition of pSmad5 reduced the expression of Rank, c-Fos, and p65 despite in the mutation group. In addition, inhibition of pSmad5 repressed the osteoclast differentiation. ChIP assay confirmed that p65 and c-Fos could bind to the promoter of Rank. These results suggested that this novel Hoxd13 mutation promoted osteoclast differentiation by regulating Smad5/p65/c-Fos/Rank axis, which might provide a new insight into SPD development.
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Affiliation(s)
- Lishan Zhang
- grid.410638.80000 0000 8910 6733Department of Hand and Foot Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021 China
| | - Ziqi Fang
- grid.460018.b0000 0004 1769 9639Department of Central Laboratory, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, 250021 China
| | - Guangdong Cheng
- grid.410638.80000 0000 8910 6733Department of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021 China
| | - Mengting He
- grid.464402.00000 0000 9459 9325Department of Critical Care Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250000 China
| | - Yanliang Lin
- Department of Central Laboratory, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, 250021, China. .,Department of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, China.
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Zhou J, Cheng J, Liu L, Luo J, Peng X. Lactobacillus acidophilus (LA) Fermenting Astragalus Polysaccharides (APS) Improves Calcium Absorption and Osteoporosis by Altering Gut Microbiota. Foods 2023; 12:foods12020275. [PMID: 36673366 PMCID: PMC9858548 DOI: 10.3390/foods12020275] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 12/24/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023] Open
Abstract
Lactobacillus acidophilus (LA) and Astragalus polysaccharides (APS) have each been shown to have anti-osteoporotic activity, and the aim of this study was to further investigate whether the LA fermenting APS was more effective in improving calcium absorption and osteoporosis than the unfermented mixed solution (MS). We found that the fermentation solution (FS) intervention improved the calcium absorption, BMD, and bone microarchitecture in osteoporotic rats and resulted in better inhibition of osteoclast differentiation markers ACP-5 and pro-inflammatory cytokines TNF-α and IL-6 and promotion of osteoblast differentiation marker OCN. This better performance may be due to the improved restoration of the relative abundance of specific bacteria associated with improved calcium absorption and osteoporosis such as Lactobacillus, Allobaculum, and UCG-005. Several key metabolites, including indicaxanthin, chlorogenic acid, and 3-hydroxymelatonin, may also be the key to the better improvement. In conclusion, the LA fermenting APS can better improve calcium absorption and osteoporosis by increasing active metabolites and altering gut microbiota. This finding should become a solid foundation for the development of LA fermenting APS in functional foods.
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Kaur M, Nagpal M, Aggarwal G. Nanotechnology for Targeted Drug Delivery to Treat Osteoporosis. Curr Drug Targets 2023; 24:2-12. [PMID: 36200208 DOI: 10.2174/1389450123666221004124040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/13/2022] [Accepted: 05/24/2022] [Indexed: 11/22/2022]
Abstract
Bone diseases such as rheumatoid arthritis, Paget's disease, and osteoporosis cause mortality and mobility limits. Nanomedicine and nano delivery systems have been utilised to deliver active drug moiety to the precisely targeted site in a controlled manner, and it serves as a means of diagnostic tools. The utilisation of nanomedicine is expanding vigorously for assured targeting and efficient drug delivery. Nanotechnology offers various advantages, such as site-specific targeting, precise drug release kinetics, and improved bone mineral density. Recent medications available for osteoporosis are not viable due to the adverse effects associated with them and low patient compliance. There is an urgent need to develop biocompatible and appropriate drug delivery nanocarriers such as nanoparticles, liposomes, hydrogels, dendrimers, micelles, mesoporous particles, etc. These carriers enhance drug delivery and therapeutic effectiveness in bone tissues. The use of nanotechnology is also associated with toxicity. This article presents the review of various reports on nanocarrier systems and biologics for the treatment of osteoporosis. It aims to provide researchers with a clue for inventing a new drug delivery system with site-specific targeting for the treatment of osteoporosis.
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Affiliation(s)
- Malkiet Kaur
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Manju Nagpal
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Geeta Aggarwal
- Delhi Pharmaceutical Sciences and Research University, New Delhi 110017, India
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Kaur M, Nagpal M, Grewal AK, Chauhan S, Dora CP, Singh TG. Molecular Complex of HSIM-loaded Polymeric Nanoparticles: Potential Carriers in Osteoporosis. Curr Drug Targets 2023; 24:1066-1078. [PMID: 37718521 DOI: 10.2174/1389450124666230915092910] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 07/03/2023] [Accepted: 08/24/2023] [Indexed: 09/19/2023]
Abstract
BACKGROUND Statins, especially simvastatin promote bone formation by stimulating the activity of osteoblasts and suppressing osteoclast activity via the BMP-Smad signaling pathway. Statins present the liver first-pass metabolism. This study attempts to fabricate and evaluate simvastatin functionalized hydroxyapatite encapsulated in poly(lactic-co-glycolic) acid (PLGA) nanoparticles (HSIM-PLGA NPs) administered subcutaneously with sustained release properties for effective management of osteoporosis. METHODS Simvastatin functionalized hydroxyapatite (HSIM) was prepared by stirring and validated by docking studies, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). Further, HSIM-loaded PLGA nanoparticles (HSIM-PLGA NPs) were developed via the solvent emulsification method. The nanoparticles were evaluated for zeta potential, particle size, entrapment efficiency, stability studies, and in vitro drug release studies. in vitro binding affinity of nanoparticles for hydroxyapatite was also measured. Bone morphology and its effect on bone mineral density were examined by using a glucocorticoid-induced osteoporosis rat model. RESULTS The optimized nanoparticles were found to be amorphous and showed no drug-polymer interaction. The particle size of formulated nanoparticles varied from 196.8 ± 2.27nm to 524.8 ± 5.49 nm and the entrapment efficiency of nanoparticles varied from 41.9 ± 3.44% to 70.8 ± 4.46%, respectively. The nanoparticles showed sustained release behaviour (75% in 24 hr) of the drug followed by non-fickian drug release. The nanoparticles exhibited high binding affinity to bone cell receptors, increasing bone mineral density. A significant difference in calcium and phosphorous levels was observed in disease and treatment rats. Porous bone and significant improvement in porosity were observed in osteoporotic rats and treated rats, respectively (P < 0.05). CONCLUSION Bone-targeting nanoparticles incorporating functionalized simvastatin can target bone. Thus, in order to distribute simvastatin subcutaneously for the treatment of osteoporosis, the developed nanoparticles may act as a promising approach.
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Affiliation(s)
- Malkiet Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Manju Nagpal
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | | | - Samrat Chauhan
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
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A novel ceRNA regulatory network involving the long noncoding NEAT1, miRNA-466f-3p and its mRNA target in osteoblast autophagy and osteoporosis. J Mol Med (Berl) 2022; 100:1629-1646. [PMID: 36169673 DOI: 10.1007/s00109-022-02255-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 08/10/2022] [Accepted: 08/31/2022] [Indexed: 12/14/2022]
Abstract
Osteoporosis (OP) is a systemic metabolic disorder characterized by a reduction in bone tissue volume. LncRNAs have been reported to act as regulators of several human diseases. Specifically, lncRNA nuclear paraspeckle assembly transcript 1 (NEAT1) is involved in proliferation, differentiation and apoptosis in osteoclasts and bone marrow mesenchymal stem cells and regulates the occurrence and development of OP. However, the relationship between NEAT1 and osteoblast autophagy and its mechanism are still unclear. Western blotting of LC3 and P62 was used to evaluate the effect of fluid shear stress (FSS) on autophagy in MC3T3-E1 osteoblasts. Total transcriptome sequencing and bioinformatics analyses were performed on osteoblasts loaded with and without FSS. qPCR was performed to examine the expression of NEAT1 in OP bone tissues and osteoblasts. The RNA-FISH was performed to study the localization of lncRNA NEAT1 and miR-466f-3p in MC3T3-E1 osteoblasts. In vitro, western blotting, transmission electron microscopy (TEM), immunofluorescence (IF) staining and qPCR were performed to verify the biological functions of NEAT1, miR-466f-3p and HK2. Subsequently, we conducted bioinformatics analysis and dual luciferase reporter assays to identify the relationships among NEAT1, miR-466f-3p and HK2. Additionally, rescue assays were conducted on osteoblasts to clarify the regulatory network of the NEAT1/miR-466f-3p/HK2 signalling pathway. In vivo, the OVX mouse model was used to investigate the effects of si-NEAT1 on autophagy in OP mice. The distal femur and serum were collected for further micro-CT analysis, blood biochemistry, and haematoxylin-eosin and Alizarin red staining (ARS). Immunohistochemistry (IHC) was performed to assess the protein expression of LC3 and HK2. NEAT1 expression was upregulated in OP tissues and osteoblast lines exposed to FSS. Knockdown of NEAT1 inhibited autophagy in vitro and in vivo. Further studies demonstrated that NEAT1 positively regulated HK2 expression via its competing endogenous RNA effects on miR-466f-3p. Moreover, we found the NEAT1/miR-466f-3p/HK2 axis regulated autophagy in osteoblasts. Knocking down NEAT1 inhibited autophagy in osteoblasts via the miR-466f-3p/HK2 signalling pathway, which may provide new ideas for novel molecular therapeutic targets of postmenopausal OP. KEY MESSAGES: • Fluid shear stress (FSS) can promote autophagy of osteoblast and performed transcriptome sequencing. • NEAT1 is overexpressed in osteoporosis and could regulate osteoblast cells autophagy. • Knockdown of lncRNA NEAT1 inhibited osteoblast cells autophagy by sponging miRNA-466f-3p and targeting HK2 in osteoporosis.
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Alghofaily M, Fouad AF. Association of Chronic Systemic Medications with the Incidence, Prevalence, or Healing of Endodontic Disease: A Systematic Review. J Endod 2022; 48:1458-1467. [DOI: 10.1016/j.joen.2022.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 10/05/2022] [Accepted: 10/06/2022] [Indexed: 11/06/2022]
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He Q, Fu K, Yao H, Wei S, Xiang L, Liu S, Chen T, Gao Y. Traditional Chinese decoction Si Zhi Wan attenuates ovariectomy (OVX)-induced bone loss by inhibiting osteoclastogenesis and promoting apoptosis of mature osteoclasts. Front Pharmacol 2022; 13:983884. [PMID: 36176450 PMCID: PMC9513524 DOI: 10.3389/fphar.2022.983884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Si Zhi Wan (SZW) is a traditional Chinese decoction used for osteoporosis treatment. Currently, the effect of SZW on ovariectomy (OVX)-induced bone loss and the underlying mechanisms remain unknown. Herein, we investigated the therapeutic effect of SZW on osteoporosis and explored the underlying mechanisms in vitro and in vivo. An OVX-induced bone loss model was established in vivo. After administration of SZW for 8 weeks, rats were sacrificed, and the uterus was weighted to calculate its index. The femur change was pathologically evaluated using hematoxylin and eosin (H&E) staining. The mineral density of the femur was observed by micro-CT. RAW264.7 cells were activated by receptor activator of nuclear factor-κB ligand (RANKL) in vitro. The effect of SZW on osteoclastogenesis was evaluated using tartrate-resistant acid phosphatase (TRAP) staining, Western blotting, and RT-PCR. The pro-apoptosis effect of SZW on mature osteoclasts was examined after induction of osteoclast maturation. Finally, the effect of SZW on the NF-κB pathway was evaluated. Our results demonstrated that SZW ameliorated OVX-induced bone loss in rats. In addition, SZW inhibited osteoclastogenesis and attenuated osteoclast-mediated bone resorption in vitro and in vivo. SZW also promoted apoptosis of mature osteoclasts. Mechanically, SZW exerts its effects by suppressing the NF-κB pathway. Overall, these findings demonstrated that SZW may be a potentially effective alternative treatment for osteoporosis.
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Affiliation(s)
- Qingman He
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Kanghua Fu
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Huan Yao
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | | | - Li Xiang
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Sixian Liu
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | | | - Yongxiang Gao
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Yongxiang Gao,
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Xu J, Zhang S, Si H, Zeng Y, Wu Y, Liu Y, Li M, Wu L, Shen B. A genetic correlation scan identifies blood proteins associated with bone mineral density. BMC Musculoskelet Disord 2022; 23:530. [PMID: 35659283 PMCID: PMC9164489 DOI: 10.1186/s12891-022-05453-z] [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] [Received: 02/14/2022] [Accepted: 05/17/2022] [Indexed: 11/10/2022] Open
Abstract
Background Osteoporosis is a common metabolic bone disease that is characterized by low bone mass. However, limited efforts have been made to explore the functional relevance of the blood proteome to bone mineral density across different life stages. Methods Using genome-wide association study summary data of the blood proteome and two independent studies of bone mineral density, we conducted a genetic correlation scan of bone mineral density and the blood proteome. Linkage disequilibrium score regression analysis was conducted to assess genetic correlations between each of the 3283 plasma proteins and bone mineral density. Results Linkage disequilibrium score regression identified 18 plasma proteins showing genetic correlation signals with bone mineral density in the TB-BMD cohort, such as MYOM2 (coefficient = 0.3755, P value = 0.0328) among subjects aged 0 ~ 15, POSTN (coefficient = − 0.5694, P value = 0.0192) among subjects aged 30 ~ 45 and PARK7 (coefficient = − 0.3613, P value = 0.0052) among subjects aged over 60. Conclusions Our results identified multiple plasma proteins associated with bone mineral density and provided novel clues for revealing the functional relevance of plasma proteins to bone mineral density. Supplementary Information The online version contains supplementary material available at 10.1186/s12891-022-05453-z.
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Katz J, Rotstein I. Prevalence of Periapical Lesions in Patients with Osteoporosis. J Endod 2020; 47:234-238. [PMID: 33130060 DOI: 10.1016/j.joen.2020.10.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 10/16/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Osteoporosis is a major systemic disease that can significantly deteriorate the quality of life of the affected individuals. It is more common in women, particularly after menopause. Osteoporosis may be associated with alterations in oral health. Treatment of osteoporotic patients mainly involves the administration of bisphosphonates (BPs). Nitrogen-containing BPs are more potent therapeutically and more commonly used. The purpose of this study was to assess the prevalence of periapical lesions in patients with osteoporosis and to evaluate the difference in the prevalence of periapical lesions in patients treated with alendronate and risedronate, 2 nitrogen-containing types of BPs. METHODS Integrated data of hospital patients were used. Data from the corresponding diagnosis codes for osteoporosis and periapical periodontitis were retrieved by searching the appropriate query in the database. The odds ratio (OR) of periapical lesions, its association with osteoporosis, and the use of 2 BP medications were calculated and analyzed statistically. RESULTS Of 1,644,953 hospital patients, 8715 presented with periapical lesions. A total of 42,292 patients were diagnosed with osteoporosis. A total of 754 patients diagnosed with osteoporosis presented with periapical lesions. The prevalence of periapical lesions in patients with osteoporosis was 1.78% compared with 0.52% in the general patient population of the hospital. The OR for the prevalence of periapical lesions in patients with osteoporosis was 3.36 and was statistically significant (P < .0001). Patients with osteoporosis treated with any type of BPs showed a prevalence of periapical lesions in 1.25% of cases compared with 0.52% in the general patient population of the hospital. The difference in the OR was statistically significant (P < .0001). The OR for the presence of periapical lesions in the osteoporosis group treated with BPs was 2.35 compared with 3.52 in the osteoporosis group not treated with BP. The difference in the OR was statistically significant (P < .0001). Patients treated with alendronate showed an OR of 1.6 for the prevalence of periapical lesions, and the difference in the OR was statistically significant (P < .0001). Patients treated with risedronate showed an OR of 1.34 for the prevalence of periapical lesions, and the difference in the OR was not statistically significant (P = .3502). CONCLUSIONS Under the conditions of this study, it appears that the prevalence of periapical lesions is significantly higher in osteoporotic patients. Osteoporotic patients treated with BPs showed a marked reduction in the prevalence of periapical lesions, especially when risedronate was used.
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Affiliation(s)
- Joseph Katz
- Department of Oral Diagnostic Sciences, University of Florida College of Dentistry, Gainesville, Florida
| | - Ilan Rotstein
- Division of Endodontics and Orthodontics, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, California.
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