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Gudenkauf LM, Gray S, Gonzalez BD, Sachdeva A, Autio K. Balancing Hormone Therapy: Mitigating Adverse Effects of Androgen-Deprivation Therapy and Exploring Alternatives in Prostate Cancer Management. Am Soc Clin Oncol Educ Book 2024; 44:e433126. [PMID: 38788186 DOI: 10.1200/edbk_433126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
Androgen-deprivation therapy (ADT) is well established as the standard of care in metastatic prostate cancer (PCa) management; however, ADT has significant adverse effects (AEs) that must be addressed. This review aims to highlight opportunities to mitigate AEs of ADT and explore alternatives in PCa management. Specifically, we discuss behavioral and pharmacologic strategies for mitigating ADT AEs as well as ADT-sparing approaches for hormone-sensitive and castration-resistant PCa. Equipped with effective mitigation strategies and possible alternatives, clinicians and researchers can optimize health-related quality of life for patients currently receiving ADT for PCa and consider treatments that spare patients from AEs of ADT.
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Affiliation(s)
- Lisa M Gudenkauf
- Department of Health Outcomes and Behavior, Moffitt Cancer Center, Tampa, FL
| | - Struan Gray
- Salford Royal and The Christie NHS Foundation Trusts, Manchester, United Kingdom
- Genito-urinary Cancer Research Group, Division of Cancer Sciences, The University of Manchester, Manchester, United Kingdom
| | - Brian D Gonzalez
- Department of Health Outcomes and Behavior, Moffitt Cancer Center, Tampa, FL
| | - Ashwin Sachdeva
- Genito-urinary Cancer Research Group, Division of Cancer Sciences, The University of Manchester, Manchester, United Kingdom
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Karen Autio
- Department of Genitourinary Oncology, Memorial Sloan Kettering Cancer Center, New York, NY
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2
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Jones AR, Currie D, Peng C, Ebeling PR, Center JR, Duque G, Lybrand S, Lyubomirsky G, Mitchell RJ, Pearson S, Seibel MJ, Occhipinti JA. Expanding access to fracture liaison services in Australia for people with minimal trauma fractures: a system dynamics modelling study. Med J Aust 2024; 220:243-248. [PMID: 38409791 DOI: 10.5694/mja2.52241] [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: 01/11/2023] [Accepted: 12/07/2023] [Indexed: 02/28/2024]
Abstract
OBJECTIVES To project how many minimal trauma fractures could be averted in Australia by expanding the number and changing the operational characteristics of fracture liaison services (FLS). STUDY DESIGN System dynamics modelling. SETTING, PARTICIPANTS People aged 50 years or more who present to hospitals with minimal trauma fractures, Australia, 2020-31. MAIN OUTCOME MEASURES Numbers of all minimal trauma fractures and of hip fractures averted by increasing the FLS number (from 29 to 58 or 100), patient screening rate (from 30% to 60%), and capacity for accepting new patients (from 40 to 80 per service per month), and reducing the proportion of eligible patients who do not attend FLS (from 30% to 15%); cost per fracture averted. RESULTS Our model projected a total of 2 441 320 minimal trauma fractures (258 680 hip fractures; 2 182 640 non-hip fractures) in people aged 50 years or older during 2020-31, including 1 211 646 second or later fractures. Increasing the FLS number to 100 averted a projected 5405 fractures (0.22%; $39 510 per fracture averted); doubling FLS capacity averted a projected 3674 fractures (0.15%; $35 835 per fracture averted). Our model projected that neither doubling the screening rate nor reducing by half the proportion of eligible patients who did not attend FLS alone would reduce the number of fractures. Increasing the FLS number to 100, the screening rate to 60%, and capacity to 80 new patients per service per month would together avert a projected 13 672 fractures (0.56%) at a cost of $42 828 per fracture averted. CONCLUSION Our modelling indicates that increasing the number of hospital-based FLS and changing key operational characteristics would achieve only moderate reductions in the number of minimal trauma fractures among people aged 50 years or more, and the cost would be relatively high. Alternatives to specialist-led, hospital-based FLS should be explored.
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Affiliation(s)
- Alicia R Jones
- Monash Centre for Health Research and Implementation, Monash University, Melbourne, VIC
- Monash Health, Melbourne, VIC
| | | | | | | | - Jackie R Center
- Garvan Institute of Medical Research, Sydney, NSW
- St Vincent's Hospital Sydney, Sydney, NSW
| | - Gustavo Duque
- Australian Institute for Musculoskeletal Science (AIMSS), University of Melbourne and Western Health, Melbourne, VIC
- Western Health, Melbourne, VIC
| | | | | | - Rebecca J Mitchell
- Australian Institute of Health Innovation, Macquarie University, Sydney, NSW
| | - Sallie Pearson
- Centre for Big Data Research in Health, University of New South Wales, Sydney, NSW
- Centre of Research Excellence in Medicines Intelligence, University of New South Wales, Sydney, NSW
| | - Markus J Seibel
- Concord Clinical School, University of Sydney, Sydney, NSW
- ANZAC Research Institute, University of Sydney, Sydney, NSW
| | - Jo-An Occhipinti
- Brain and Mind Centre, University of Sydney, Sydney, NSW
- Computer Simulation and Advanced Research Technologies (CSART), Sydney, NSW
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3
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Xu J, Cao B, Li C, Li G. The recent progress of endocrine therapy-induced osteoporosis in estrogen-positive breast cancer therapy. Front Oncol 2023; 13:1218206. [PMID: 37483519 PMCID: PMC10361726 DOI: 10.3389/fonc.2023.1218206] [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: 05/06/2023] [Accepted: 06/23/2023] [Indexed: 07/25/2023] Open
Abstract
Breast cancer is a significant global health concern, and the discovery of endocrine therapy has played a crucial role in the treatment of estrogen-positive breast cancer. However, these therapies are often associated with osteoporosis-related adverse events, which increase the risk of fractures in breast cancer patients and can result in limited mobility and reduced quality of life. Previous studies have shown that osteoporosis is essential side effects of the breast cancer therapy, although the exact mechanisms remain mostly unclear. Current clinical treatments, such as bisphosphonates, cause side effects and may impact the therapeutic response to endocrine drugs. In this review, we explore the likelihood of endocrine therapy-induced osteoporosis in estrogen-positive breast cancer therapy and discuss the involved mechanisms as well as the therapeutic potential of drugs and drug combination strategies.
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Affiliation(s)
| | | | - Chunyu Li
- *Correspondence: Chunyu Li, ; Guohui Li,
| | - Guohui Li
- *Correspondence: Chunyu Li, ; Guohui Li,
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Kakar MU, Karim H, Shabir G, Iqbal I, Akram M, Ahmad S, Shafi M, Gul P, Riaz S, Rehman R, Salari H. A review on extraction, composition, structure, and biological activities of polysaccharides from different parts of Nelumbo nucifera. Food Sci Nutr 2023; 11:3655-3674. [PMID: 37457175 PMCID: PMC10345683 DOI: 10.1002/fsn3.3376] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/30/2023] [Accepted: 04/04/2023] [Indexed: 07/18/2023] Open
Abstract
Nelumbo nucifera (lotus plant) is an important member of the Nelumbonaceae family. This review summarizes the studies conducted on it since the past 15 years to provide an understanding on future areas of focus. Different parts of this plant, that is, leaves, roots, and seeds, have been used as food and for the treatment of various diseases. Polysaccharides have been extracted from different parts using different methods. The manuscript reviews the methods of extraction of polysaccharides used for leaves, roots, and seeds, along with their yield. Some methods can provide better yield while some provide better biological activity with low yield. The composition and structure of extracted polysaccharides have been determined in some studies. Although monosaccharide composition has been determined in various studies, too little information about the structure of polysaccharides from N. nucifera is available in the current literature. Different useful biological activities have been explored using in vivo and in vitro methods, which include antioxidant, antidiabetic, antitumor, anti-osteoporotic, immunomodulatory, and prebiotic activities. Antitumor activity from polysaccharides of lotus leaves is yet to be explored, besides lotus root has been underexplored as compared to other parts (leaves and seeds) according to our literature survey. Studies dedicated to the successful use of combination of extraction methods can be conducted in future. The plant provides a therapeutic as well as nutraceutical potential; however, antimicrobial activity and synergistic relationships of polysaccharides from different parts of the plant need further exploration.
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Affiliation(s)
- Mohib Ullah Kakar
- Faculty of Marine SciencesLasbela University of Agriculture, Water and Marine Sciences (LUAWMS)UthalBalochistanPakistan
| | - Hammad Karim
- Sheikh Zayed Medical CollegeRahim Yar KhanPunjabPakistan
| | | | - Imran Iqbal
- Department of Information and Computational SciencesSchool of Mathematical Sciences and LMAMPeking UniversityBeijingChina
| | - Muhammad Akram
- Department of Life Sciences, School of ScienceUniversity of Management and Technology (UMT)LahorePakistan
| | - Sajjad Ahmad
- Faculty of Veterinary and Animal SciencesLasbela University of Agriculture, Water and Marine Sciences (LUAWMS)UthalBalochistanPakistan
| | - Muhammad Shafi
- Faculty of Marine SciencesLasbela University of Agriculture, Water and Marine Sciences (LUAWMS)UthalBalochistanPakistan
| | - Pari Gul
- Institute of BiochemistryUniversity of BalochistanQuettaPakistan
| | - Sania Riaz
- Department of Bioinformatics and BiosciencesCapital University of Science and TechnologyIslamabadPakistan
| | - Rizwan‐ur‐ Rehman
- Department of Bioinformatics and BiosciencesCapital University of Science and TechnologyIslamabadPakistan
| | - Hamid Salari
- Department of Horticulture, Faculty of AgricultureKabul UniversityKabulAfghanistan
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5
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Wang H, Luo Y, Wang H, Li F, Yu F, Ye L. Mechanistic advances in osteoporosis and anti-osteoporosis therapies. MedComm (Beijing) 2023; 4:e244. [PMID: 37188325 PMCID: PMC10175743 DOI: 10.1002/mco2.244] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/15/2023] [Accepted: 03/06/2023] [Indexed: 05/17/2023] Open
Abstract
Osteoporosis is a type of bone loss disease characterized by a reduction in bone mass and microarchitectural deterioration of bone tissue. With the intensification of global aging, this disease is now regarded as one of the major public health problems that often leads to unbearable pain, risk of bone fractures, and even death, causing an enormous burden at both the human and socioeconomic layers. Classic anti-osteoporosis pharmacological options include anti-resorptive and anabolic agents, whose ability to improve bone mineral density and resist bone fracture is being gradually confirmed. However, long-term or high-frequency use of these drugs may bring some side effects and adverse reactions. Therefore, an increasing number of studies are devoted to finding new pathogenesis or potential therapeutic targets of osteoporosis, and it is of great importance to comprehensively recognize osteoporosis and develop viable and efficient therapeutic approaches. In this study, we systematically reviewed literatures and clinical evidences to both mechanistically and clinically demonstrate the state-of-art advances in osteoporosis. This work will endow readers with the mechanistical advances and clinical knowledge of osteoporosis and furthermore present the most updated anti-osteoporosis therapies.
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Affiliation(s)
- Haiwei Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
- Department of EndodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Yuchuan Luo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
- Department of EndodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Haisheng Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Feifei Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Fanyuan Yu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
- Department of EndodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Ling Ye
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
- Department of EndodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
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Shaul J, Hill R, Bruder S, Tilton A, Howe J. Triphasic calcium-based implant material resorbs and is replaced with bone in ovariectomized rats with or without bisphosphonate treatment. J Orthop Res 2022; 40:2271-2280. [PMID: 34935182 DOI: 10.1002/jor.25255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 09/08/2021] [Accepted: 12/19/2021] [Indexed: 02/04/2023]
Abstract
This study evaluated the effects of AGN1, a triphasic calcium-based material, and alendronate (A) on distal femoral defect bone repair in ovariectomized (OVX) rats. Of 106 rats, 92 were OVX'ed at 12 weeks old and underwent a 12-week induction period. Animals were randomized into five groups: OVX Control, OVX Alendronate Control, Normal Control, OVX Implantation, OVX Alendronate + Implantation. OVX Alendronate Control and OVX Alendronate + Implantation groups received alendronate injection twice weekly (0.015 mg/kg) from 6 weeks until sacrifice. Twelve weeks after OVX, 2.5 mm diameter by 4.0 mm long cylindrical, bilateral distal femoral defects were created in experimental animals. One defect was left empty, and one filled with AGN1. Dual-energy X-ray absorptiometry, microcomputed tomography, and histomorphometry were performed 0-, 6-, 12-, and 18-week postdefect/implantation surgery (N = 6-8/group). Results showed OVX induced significant and progressive bone loss which alendronate prevented. Histomorphometry demonstrated rapid AGN1 resorption: AGN1 resorbed from 95.1 ± 0.7% filling of the implant site (week 0) to 1.3 ± 1.0% (18 weeks) with no significant alendronate effect (1.6 ± 1.1%, 18 weeks). Bone formation in empty defects consisted primarily of cortical wall healing, whereas AGN1 implants demonstrated cortical wall healing with new trabecular bone filling the subcortical space. Alendronate dramatically increased bone formation in empty and AGN1 defects. We conclude AGN1 is resorbed and replaced by new cortical and trabecular bone in this OVX model, and alendronate did not compromise these effects.
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Affiliation(s)
| | - Ronald Hill
- AgNovos Healthcare, Rockville, Maryland, USA
| | - Scott Bruder
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio, USA
| | | | - James Howe
- AgNovos Healthcare, Rockville, Maryland, USA
- Department of Orthopedic Surgery, University of Vermont, Burlington, Vermont, USA
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7
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Yamada T, Fukasawa K, Horie T, Kadota T, Lyu J, Tokumura K, Ochiai S, Iwahashi S, Suzuki A, Park G, Ueda R, Yamamoto M, Kitao T, Shirahase H, Ochi H, Sato S, Iezaki T, Hinoi E. The role of CDK8 in mesenchymal stem cells in controlling osteoclastogenesis and bone homeostasis. Stem Cell Reports 2022; 17:1576-1588. [PMID: 35777359 PMCID: PMC9287674 DOI: 10.1016/j.stemcr.2022.06.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 01/02/2023] Open
Abstract
Bone marrow mesenchymal stem cells (MSCs) are critical regulators of postnatal bone homeostasis. Osteoporosis is characterized by bone volume and strength deterioration, partly due to MSC dysfunction. Cyclin-dependent kinase 8 (CDK8) belongs to the transcription-related CDK family. Here, CDK8 in MSCs was identified as important for bone homeostasis. CDK8 level was increased in aged MSCs along with the association with aging-related signals. Mouse genetic studies revealed that CDK8 in MSCs plays a crucial role in bone resorption and homeostasis. Mechanistically, CDK8 in MSCs extrinsically controls osteoclastogenesis through the signal transducer and transcription 1 (STAT1)-receptor activator of the nuclear factor κ Β ligand (RANKL) axis. Moreover, aged MSCs have high osteoclastogenesis-supporting activity, partly through a CDK8-dependent manner. Finally, pharmacological inhibition of CDK8 effectively repressed MSC-dependent osteoclastogenesis and prevented ovariectomy-induced osteoclastic activation and bone loss. These findings highlight that the CDK8-STAT1-RANKL axis in MSCs could play a crucial role in bone resorption and homeostasis. Aging increases CDK8 expression level in MSCs and their progeny CDK8 in MSCs plays a crucial role in bone resorption and homeostasis CDK8 in MSCs extrinsically controls osteoclastogenesis through STAT1/RANKL axis CDK8 inhibitor prevents ovariectomy-induced osteoclastic activation and bone loss
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Affiliation(s)
- Takanori Yamada
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Kazuya Fukasawa
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Tetsuhiro Horie
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Takuya Kadota
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan; Drug Discovery Research Department, Kyoto Pharmaceutical Industries, Kyoto, Japan
| | - Jiajun Lyu
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Kazuya Tokumura
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Shinsuke Ochiai
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Sayuki Iwahashi
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Akane Suzuki
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Gyujin Park
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Rie Ueda
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Megumi Yamamoto
- Drug Discovery Research Department, Kyoto Pharmaceutical Industries, Kyoto, Japan
| | - Tatsuya Kitao
- Drug Discovery Research Department, Kyoto Pharmaceutical Industries, Kyoto, Japan
| | - Hiroaki Shirahase
- Drug Discovery Research Department, Kyoto Pharmaceutical Industries, Kyoto, Japan
| | - Hiroki Ochi
- Department of Physiology and Cell Biology, Tokyo Medical and Dental University, Graduate School, Tokyo 113-8510, Japan
| | - Shingo Sato
- Center for Innovative Cancer Treatment, Tokyo Medical and Dental University, Tokyo 113-8519, Japan
| | - Takashi Iezaki
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Eiichi Hinoi
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu 501-1196, Japan; United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu 501-1196, Japan.
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8
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Gilbert ZA, Muller A, Leibowitz JA, Kesselman MM. Osteoporosis Prevention and Treatment: The Risk of Comorbid Cardiovascular Events in Postmenopausal Women. Cureus 2022; 14:e24117. [PMID: 35573562 PMCID: PMC9106546 DOI: 10.7759/cureus.24117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 04/11/2022] [Indexed: 11/05/2022] Open
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Lorenzo-Pouso AI, Bravo SB, Carballo J, Del Pilar Chantada-Vázquez M, Bagán J, Bagán L, Chamorro-Petronacci CM, Conde-Amboage M, López-López R, García-García A, Pérez-Sayáns M. Quantitative proteomics in medication-related osteonecrosis of the jaw: a proof-of-concept study. Oral Dis 2022. [PMID: 35377498 DOI: 10.1111/odi.14201] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 03/23/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Medication-related osteonecrosis of the jaw (MRONJ) is a paradoxical effect associated with bone modifying agents (BMAs) and other drugs. Currently no valuable diagnostic or prognosis biomarkers exist. This goal of this research was to study MRONJ related salivary proteome. MATERIALS AND METHODS This case-control aimed to study salivary proteome in MRONJ versus control groups i) formed from BMAs consumers and ii) healthy individuals to unravel biomarkers. 38 samples of unstimulated whole saliva (18 MRONJ patients, 10 BMA consumers, and 10 healthy controls) were collected. Proteomic analysis by SWATH-MS coupled to bioinformatics analysis was executed. RESULTS 586 proteins were identified, 175 proteins showed significant differences among MRONJ versus controls. SWATH-MS revealed differentially expressed proteins among three groups, which have never isolated. These proteins had distinct roles including cell envelope organization, positive regulation of vesicle fusion, positive regulation of receptor binding, or regulation of low-density lipoprotein particle clearance. Integrative analysis prioritised 3 proteins (MMP9, AACT and HBD). Under receiver operating characteristic analysis, this panel discriminated MRONJ with a sensitivity of 90% and a specificity of 78.9%. CONCLUSION These findings may inform of a novel biomarker panel for MRONJ prediction or diagnosis. Nonetheless, further research is needed to validate this panel.
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Affiliation(s)
- Alejandro I Lorenzo-Pouso
- Oral Medicine, Oral Surgery and Implantology Unit, MedOralRes Group, University of Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Spain
| | - Susana B Bravo
- Proteomic Unit, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela, Spain
| | - Javier Carballo
- Department of Food Technology, Faculty of Sciences, University of Vigo-Ourense Campus, Spain
| | - María Del Pilar Chantada-Vázquez
- Proteomic Unit, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela, Spain
| | - José Bagán
- Department of Stomatology and Maxillofacial Surgery, University General Hospital of Valencia, Spain
| | - Leticia Bagán
- Department of Stomatology and Maxillofacial Surgery, University General Hospital of Valencia, Spain
| | - Cintia M Chamorro-Petronacci
- Oral Medicine, Oral Surgery and Implantology Unit, MedOralRes Group, University of Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Spain
| | - Mercedes Conde-Amboage
- Models of Optimization, Decision, Statistics and Applications Reseach Group (MODESTYA), Department of Statistics, Mathematical Analysis and Optimization, University of Santiago de Compostela, Spain
| | - Rafael López-López
- Translational Medical Oncology Group (Oncomet), Health Research Institute of Santiago (IDIS), University Hospital Complex of Santiago de Compostela (SERGAS), Spain
| | - Abel García-García
- Oral Medicine, Oral Surgery and Implantology Unit, MedOralRes Group, University of Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Spain
| | - Mario Pérez-Sayáns
- Oral Medicine, Oral Surgery and Implantology Unit, MedOralRes Group, University of Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Spain
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The ERα/KDM6B regulatory axis modulates osteogenic differentiation in human mesenchymal stem cells. Bone Res 2022; 10:3. [PMID: 34992221 PMCID: PMC8738748 DOI: 10.1038/s41413-021-00171-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/11/2021] [Accepted: 08/02/2021] [Indexed: 01/19/2023] Open
Abstract
Osteoporosis is a highly prevalent public health burden associated with an increased risk of bone fracture, particularly in aging women. Estrogen, an important medicinal component for the preventative and therapeutic treatment of postmenopausal osteoporosis, induces osteogenesis by activating the estrogen receptor signaling pathway and upregulating the expression of osteogenic genes, such as bone morphogenetic proteins (BMPs). The epigenetic regulation of estrogen-mediated osteogenesis, however, is still unclear. In this report, we found that estrogen significantly induced the expression of lysine-specific demethylase 6B (KDM6B) and that KDM6B depletion by shRNAs led to a significant reduction in the osteogenic potential of DMSCs. Mechanistically, upon estrogen stimulation, estrogen receptor-α (ERα) was recruited to the KDM6B promoter, directly enhancing KDM6B expression. Subsequently, KDM6B was recruited to the BMP2 and HOXC6 promoters, resulting in the removal of H3K27me3 marks and activating the transcription of BMP2 and HOXC6, the master genes of osteogenic differentiation. Furthermore, we found that estrogen enhanced DMSC osteogenesis during calvarial bone regeneration and that estrogen's pro-osteogenic effect was dependent on KDM6B in vivo. Taken together, our results demonstrate the vital role of the ERα/KDM6B regulatory axis in the epigenetic regulation of the estrogen-dependent osteogenic response.
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11
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Zhang P, Ye J, Dai J, Wang Y, Chen G, Hu J, Hu Q, Fei J. Gallic acid inhibits osteoclastogenesis and prevents ovariectomy-induced bone loss. Front Endocrinol (Lausanne) 2022; 13:963237. [PMID: 36601012 PMCID: PMC9807166 DOI: 10.3389/fendo.2022.963237] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022] Open
Abstract
Osteoporosis is a common metabolic bone disease with a rapidly increasing prevalence, characterized by massive bone loss because of excessive osteoclast formation. Gallic acid (GA), a phenolic acid isolated from Cornus officinalis, has anti-inflammatory and anti-oxidant effects, but its effect on osteoclast formation has not been confirmed. In our study, we demonstrated that GA significantly inhibited RANKL-induced osteoclast formation and function of osteoclast in bone marrow monocytes (BMMs) and RAW264.7 cells in a dose-dependent manner without cytotoxicity. For molecular mechanisms, GA repressed osteoclastogenesis by blocking Akt, ERK, and JNK pathways, and suppressed osteoclastogenesis-related marker expression, including nuclear factor of the activated T-cell cytoplasmic 1 (NFATc1), c-Fos, and cathepsin K (CTSK). In addition, we further assessed the effect of GA in an ovariectomized mouse model, which indicated that GA has a notable effect on preventing bone loss. In conclusion, GA exerts notable effects in inhibiting osteoclastogenesis and preventing ovariectomy-induced bone loss, suggesting that GA is a potential agent in osteoporosis treatment.
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Affiliation(s)
- Peng Zhang
- Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine, Hangzhou, China
| | - Jiekai Ye
- Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine, Hangzhou, China
| | - Jiale Dai
- The Third Clinical College of Zhejiang Chinese Medical University, Hangzhou, China
| | - Ying Wang
- Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine, Hangzhou, China
| | - Genjun Chen
- Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine, Hangzhou, China
| | - Jinping Hu
- Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine, Hangzhou, China
| | - Qimiao Hu
- The Third Clinical College of Zhejiang Chinese Medical University, Hangzhou, China
- *Correspondence: Qimiao Hu, ; Jun Fei,
| | - Jun Fei
- Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine, Hangzhou, China
- *Correspondence: Qimiao Hu, ; Jun Fei,
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12
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Larrañaga-Vera A, Toti KS, Flatow JS, Haraczy AJ, Warnick E, Rao H, Gao ZG, Sussman SM, Mediero A, Leucht P, Jacobson KA, Cronstein BN. Novel alendronate-CGS21680 conjugate reduces bone resorption and induces new bone formation in post-menopausal osteoporosis and inflammatory osteolysis mouse models. Arthritis Res Ther 2022; 24:265. [PMID: 36494860 PMCID: PMC9733060 DOI: 10.1186/s13075-022-02961-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022] Open
Abstract
Loss of bone is a common medical problem and, while it can be treated with available therapies, some of these therapies have critical side effects. We have previously demonstrated that CGS21680, a selective A2A adenosine receptor agonist, prevents bone loss, but its on-target toxicities (hypotension, tachycardia) and frequent dosing requirements make it unusable in the clinic. We therefore generated a novel alendronate-CGS21680 conjugate (MRS7216), to target the agonist to bone where it remains for long periods thereby diminishing the frequency of administration and curtailing side effects. MRS7216 was synthesized from CGS21680 by sequential activation of the carboxylic acid moiety and reacting with an appropriate amino acid (PEG, alendronic acid) under basic conditions. MRS7216 was tested on C57BL/6J (WT) mice with established osteoporosis (OP) and WT or A2A KO mice with wear particle-induced inflammatory osteolysis (OL). Mice were treated weekly with MRS7216 (10mg/kg). Bone formation was studied after in vivo labeling with calcein/Alizarin Red, and μCT and histology analyses were performed. In addition, human primary osteoblasts and osteoclasts were cultured using bone marrow discarded after hip replacement. Receptor binding studies demonstrate that MRS7216 efficiently binds the A2A adenosine receptor. MRS7216-treated OP and OL mice had significant new bone formation and reduced bone loss compared to vehicle or alendronate-treated mice. Histological analysis showed that MRS7216 treatment significantly reduced osteoclast number and increased osteoblast number in murine models. Interestingly, cultured human osteoclast differentiation was inhibited, and osteoblast differentiation was stimulated by the compound indicating that MRS7216 conjugates represent a novel therapeutic approach to treat osteoporosis and osteolysis.
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Affiliation(s)
- Ane Larrañaga-Vera
- grid.240324.30000 0001 2109 4251Division of Translational Medicine, Department of Medicine, NYU Langone Health, 550 First Avenue, Medical Science Building, Room, New York, NY 251 USA
| | - Kiran S. Toti
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - James S. Flatow
- grid.240324.30000 0001 2109 4251Division of Translational Medicine, Department of Medicine, NYU Langone Health, 550 First Avenue, Medical Science Building, Room, New York, NY 251 USA
| | - Alexandra J. Haraczy
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Eugene Warnick
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Harsha Rao
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Zhan-Guo Gao
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Sarah M. Sussman
- grid.410427.40000 0001 2284 9329Medical College of Georgia at Augusta University, Augusta, GA USA
| | - Aranzazu Mediero
- grid.240324.30000 0001 2109 4251Division of Translational Medicine, Department of Medicine, NYU Langone Health, 550 First Avenue, Medical Science Building, Room, New York, NY 251 USA ,grid.419651.e0000 0000 9538 1950Bone and Joint Research Unit, IIS-Fundación Jiménez Díaz UAM, Madrid, Spain
| | - Philipp Leucht
- grid.283061.e0000 0001 2325 0879Department of Orthopedic Surgery, New York University Langone Orthopedic Hospital, New York, USA ,grid.137628.90000 0004 1936 8753Department of Cell Biology, New York University Grossman School of Medicine, New York, NY USA
| | - Kenneth A. Jacobson
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Bruce N. Cronstein
- grid.240324.30000 0001 2109 4251Division of Translational Medicine, Department of Medicine, NYU Langone Health, 550 First Avenue, Medical Science Building, Room, New York, NY 251 USA ,grid.240324.30000 0001 2109 4251Division of Rheumatology, Department of Medicine, NYU Langone Health, New York, NY USA
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Bovine Colostrum Supplementation Improves Bone Metabolism in an Osteoporosis-Induced Animal Model. Nutrients 2021; 13:nu13092981. [PMID: 34578859 PMCID: PMC8471956 DOI: 10.3390/nu13092981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 12/18/2022] Open
Abstract
Osteoporosis is characterized by bone loss. The present study aims to investigate the effects of bovine colostrum (BC) on bone metabolism using ovariectomized (OVX) and orchidectomized (ORX) rat models. Twenty-seven-week-old Wistar Han rats were randomly assigned as: (1) placebo control, (2) BC supplementation dose 1 (BC1: 0.5 g/day/OVX, 1 g/day/ORX), (3) BC supplementation dose 2 (BC2: 1 g/day/OVX, 1.5 g/day/ORX) and (4) BC supplementation dose 3 (BC3: 1.5 g/day/OVX, 2 g/day/ORX). Bone microarchitecture, strength, gene expression of VEGFA, FGF2, RANKL, RANK and OPG, and bone resorption/formation markers were assessed after four months of BC supplementation. Compared to the placebo, OVX rats in the BC1 group exhibited significantly higher cortical bone mineral content and trabecular bone mineral content (p < 0.01), while OVX rats in the BC3 group showed significantly higher trabecular bone mineral content (p < 0.05). ORX rats receiving BC dose 2 demonstrated significantly higher levels of trabecular bone mineral content (p < 0.05). Serum osteocalcin in the ORX was pointedly higher in all BC supplementation groups than the placebo (BC1: p < 0.05; BC2, BC3: p < 0.001). Higher doses of BC induced significantly higher relative mRNA expression of OPG, VEGFA, FGF2 and RANKL (p < 0.05). BC supplementation improves bone metabolism of OVX and ORX rats, which might be associated with the activation of the VEGFA, FGF2 and RANKL/RANK/OPG pathways.
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Liu CS, Feasel AL, Kline GA, Billington EO. Pharmacotherapy decisions among postmenopausal women attending a group medical consultation or a one-on-one specialist consultation at an osteoporosis center: an observational cohort study. Osteoporos Int 2021; 32:1421-1427. [PMID: 33462652 DOI: 10.1007/s00198-021-05823-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 01/04/2021] [Indexed: 12/21/2022]
Abstract
UNLABELLED Group medical visits for osteoporosis can improve access to care while being highly accepted by patients. In this study, a similar proportion of women planned to initiate pharmacotherapy after attending a group or traditional one-on-one osteoporosis consultation, indicating that the group consultation model does not produce unexpected treatment decisions. INTRODUCTION Group medical consultations for osteoporosis are time-efficient and highly accepted by patients, but effects on treatment decisions are unknown. We aimed to compare women's decisions to initiate or decline osteoporosis pharmacotherapy after attending either a group or transitional one-on-one osteoporosis consultation. METHODS In this observational study, we prospectively evaluated postmenopausal women referred to an osteoporosis clinic who attended a group medical visit and compared their decisions regarding pharmacologic osteoporosis treatment with retrospective data from a cohort of women who attended a traditional consultation. Both consultation types involved interaction with a specialist physician, individualized fracture risk estimation (using FRAX®), and education regarding fracture consequences and available osteoporosis medications. Both forms of consultation emphasized shared decision-making; however, group consultation attendees did not receive personalized treatment recommendations from the physician. RESULTS We reviewed the records of 125 women (median age 63 years) who attended a group consultation and 83 women (median age 64 years) who attended a traditional consultation between 2016 and 2019. Twenty-four (19%) of the group cohort and 16 (19%) of the traditional cohort were at high 10-year risk of major osteoporotic fracture (FRAX® ≥ 20.0%). A similar proportion planned to initiate pharmacologic therapy after the group and traditional consultations (23% vs 16%, p = 0.22); these proportions were comparable among women at high risk (42% vs 50%, p = 0.75) and moderate risk (19% vs 15%, p = 0.77), but a higher proportion of low-risk women planned to initiate therapy after the group consultation (18% vs 0%, p = 0.009). CONCLUSION Patient decisions to initiate pharmacologic treatment made during a group visit are similar to those made during traditional one-on-one consultation. The group consultation model represents an alternative to one-on-one assessment for delivering osteoporosis consultative services.
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Affiliation(s)
- C S Liu
- Undergraduate Medical Education, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - A L Feasel
- Dr. David Hanley Osteoporosis Centre, Alberta Health Services, Richmond Road Diagnostic & Treatment Centre, Calgary, Alberta, Canada
| | - G A Kline
- Dr. David Hanley Osteoporosis Centre, Alberta Health Services, Richmond Road Diagnostic & Treatment Centre, Calgary, Alberta, Canada
- Division of Endocrinology & Metabolism, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - E O Billington
- Dr. David Hanley Osteoporosis Centre, Alberta Health Services, Richmond Road Diagnostic & Treatment Centre, Calgary, Alberta, Canada.
- Division of Endocrinology & Metabolism, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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15
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Anti-Osteoporotic Effects of Commiphora Myrrha and Its Poly-Saccharide via Osteoclastogenesis Inhibition. PLANTS 2021; 10:plants10050945. [PMID: 34068461 PMCID: PMC8151384 DOI: 10.3390/plants10050945] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/06/2021] [Accepted: 05/06/2021] [Indexed: 11/17/2022]
Abstract
In traditional oriental medicines, Commiphora myrrha and its resinous exudate (i.e., myrrh) are used as herbal remedies to treat various inflammatory and metabolic disorders. Until now, C. myrrha-derived herbal products are considered useful source for bioactive compounds to manage numerous human diseases. This study investigated the effects of water extract of C. myrrha resin (WCM) and its polysaccharide (WCM-PE) on modulatory effects of osteoclast differentiation and/or ovariectomized-induced bone loss. Oral administration of WCM (200 and 500 mg/kg/day for four weeks) notably decreased trabecular bone loss and lipid accumulation in the bone marrow cavity. WCM and WCM-PE dose-dependently inhibited receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclastogenesis and suppressed RANKL-mediated overexpression of c-Fos and nuclear factor of activated T cells, cytoplasmic 1, thereby downregulating osteoclast-specific gene (Atp6v0d2, DC-STAMP and cathepsin K) expression. Thus, our results suggest that WCM and WCM-PE are promising nutraceutical candidates for the management of osteoporosis in postmenopausal women.
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Bose S, Sarkar N, Banerjee D. Natural medicine delivery from biomedical devices to treat bone disorders: A review. Acta Biomater 2021; 126:63-91. [PMID: 33657451 PMCID: PMC8247456 DOI: 10.1016/j.actbio.2021.02.034] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 02/18/2021] [Accepted: 02/20/2021] [Indexed: 12/28/2022]
Abstract
With an increasing life expectancy and aging population, orthopedic defects and bone graft surgeries are increasing in global prevalence. Research to date has advanced the understanding of bone biology and defect repair mechanism, leading to a marked success in the development of synthetic bone substitutes. Yet, the quest for functionalized bone grafts prompted the researchers to find a viable alternative that regulates cellular activity and supports bone regeneration and healing process without causing serious side-effects. Recently, researchers have introduced natural medicinal compounds (NMCs) in bone scaffold that enables them to release at a desirable rate, maintains a sustained release allowing sufficient time for tissue in-growth, and guides bone regeneration process with minimized risk of tissue toxicity. According to World Health Organization (WHO), NMCs are gaining popularity in western countries for the last two decades and are being used by 80% of the population worldwide. Compared to synthetic drugs, NMCs have a broader range of safety window and thus suitable for prolonged localized delivery for bone regeneration. There is limited literature focusing on the integration of bone grafts and natural medicines that provides detailed scientific evidences on NMCs, their toxic limits and particular application in bone tissue engineering, which could guide the researchers to develop functionalized implants for various bone disorders. This review will discuss the emerging trend of NMC delivery from bone grafts, including 3D-printed structures and surface-modified implants, highlighting the significance and potential of NMCs for bone health, guiding future paths toward the development of an ideal bone tissue engineering scaffold. STATEMENT OF SIGNIFICANCE: To date, additive manufacturing technology provids us with many advanced patient specific or defect specific bone constructs exhibiting three-dimensional, well-defined microstructure with interconnected porous networks for defect-repair applications. However, an ideal scaffold should also be able to supply biological signals that actively guide tissue regeneration while simultaneously preventing post-implantation complications. Natural biomolecules are gaining popularity in tissue engineering since they possess a safer, effective approach compared to synthetic drugs. The integration of bone scaffolds and natural biomolecules exploits the advantages of customized, multi-functional bone implants to provide localized delivery of biochemical signals in a controlled manner. This review presents an overview of bone scaffolds as delivery systems for natural biomolecules, which may provide prominent advancement in bone development and improve defect-healing caused by various musculoskeletal disorders.
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Affiliation(s)
- Susmita Bose
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, United States.
| | - Naboneeta Sarkar
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, United States
| | - Dishary Banerjee
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, United States
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17
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Huidrom S, Beg MA, Masood T. Post-menopausal Osteoporosis and Probiotics. Curr Drug Targets 2021; 22:816-822. [PMID: 33109043 DOI: 10.2174/1389450121666201027124947] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 09/10/2020] [Accepted: 09/21/2020] [Indexed: 11/22/2022]
Abstract
Postmenopausal osteoporosis (PMO) is characterized by low bone mass and structural deterioration of bone tissue with increased risk of fracture in postmenopausal women. It is due to the deficiency of estrogen production after menopause, which causes the imbalance in the bone remodeling process where resorption/formation skewed more towards resoption, which leads to bone loss. It causes high morbidity and severe health complication among the affected women. The current PMO therapy has many unwanted side effects and even increases the possibility of tumorigenesis. Therefore, an alternative therapy that is safe and effective is required. Probiotics are dietary supplements consisting of beneficial microbes and when administered in an adequate amount, confer a health benefit to the host. Recent scientific evidences suggested the link between the intestinal microbiota and bone health. This review discusses the process of bone remodeling and the role of intestinal microbiota on the bone metabolism of the host. Further, it summarizes the recent studies of probiotic on an animal model of PMO and also in post postmenopausal women.
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Affiliation(s)
- Sangeeta Huidrom
- Department of Pharmacology, Shri Guru Ram Rai Institute of Medical and Health Sciences, Dehradun - 248001, Uttarakhand, India
| | - Mirza Atif Beg
- Department of Pharmacology, Shri Guru Ram Rai Institute of Medical and Health Sciences, Dehradun - 248001, Uttarakhand, India
| | - Tariq Masood
- Department of Biochemistry, Shri Guru Ram Rai Institute of Medical and Health Sciences, Dehradun - 248001, Uttarakhand, India
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18
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Kline GA, Morin SN, Lix LM, Leslie WD. Bone densitometry categories as a salient distracting feature in the modern clinical pathways of osteoporosis care: A retrospective 20-year cohort study. Bone 2021; 145:115861. [PMID: 33484888 DOI: 10.1016/j.bone.2021.115861] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/13/2021] [Accepted: 01/17/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND It is unknown as to what factors typically drive osteoporosis therapy decisions in real-world practice. METHODS Retrospective, 20-year cohort study within the government health system of Manitoba including all women having bone densitometry (BMD) tests between 1996 and 2017. Osteoporosis prescription data was linked to registry data on fractures, clinical risk factors and BMD tests. We defined 6 possible treatment decisions by prescription data: no treatment, starting, stopping, continuing, drug hiatus and re-starting. For each decision, we tested the association between salient patient factors (age, glucocorticoid use, recent fracture, BMD hip or spine T-score ≤ -2.5, FRAX major osteoporotic fracture probability ≥20%) using multivariable logistic regression. The factors were rank-ordered by decreasing Wald χ2 statistic to determine the relative importance. RESULTS There were 64,181 women, 33.8% of whom started osteoporosis therapy. For patients who begin therapy after a first BMD, the rank-ordered multivariable logistic regression factor most strongly associated was the T-score ≤ -2.5 [OR of 7.59(95%CI 7.19-8.01, p < 0.001)]. This was followed by glucocorticoid use [OR 2.89(95%CI 2.59-3.22, p < 0.001)]. Increasing age and recent fracture (within 2 years) were weak predictors of therapy and high FRAX score associated with reduced odds of therapy [OR 0.80 (95%CI 0.74-0.88, p < 0.001)]. T-scores were the strongest factor predicting therapy stop/continuation/re-starting; age and prior fracture had weak or no associations. CONCLUSIONS Despite recommendations for fracture-risk-based approach to osteoporosis therapy, BMD T-score continues to be the dominant factor in actual practice. Age, prior fracture or global fracture risk are much less associated; it is possible that BMD T-score categories are therefore acting as a clinically salient distracting factor.
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Affiliation(s)
- Gregory A Kline
- Department of Medicine, Cumming School of Medicine, University of Calgary, Canada.
| | - Suzanne N Morin
- Department of Medicine, Faculty of Medicine, McGill University, Canada
| | - Lisa M Lix
- Department of Community Medicine, University of Manitoba, Canada
| | - William D Leslie
- Departments of Internal Medicine and Radiology, Rady College of Medicine, University of Manitoba, Canada
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Li Y, Lin S, Liu P, Huang J, Qiu J, Wen Z, Yuan J, Qiu H, Liu Y, Liu Q, Zhou T, Luo P, Guo H, Ma Y, Guo D, Mo G, Tang Y, Xu L, Liang D, Xu J, Ding Y, Zhang S. Carnosol suppresses RANKL-induced osteoclastogenesis and attenuates titanium particles-induced osteolysis. J Cell Physiol 2021; 236:1950-1966. [PMID: 32722851 DOI: 10.1002/jcp.29978] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 12/15/2022]
Abstract
Osteolysis is a common medical condition characterized by excessive activity of osteoclasts and bone resorption, leading to severe poor quality of life. It is essential to identify the medications that can effectively suppress the excessive differentiation and function of osteoclasts to prevent and reduce the osteolytic conditions. It has been reported that Carnosol (Car), isolated from rosemary and salvia, has anti-inflammatory, antioxidative, and anticancer effects, but its activity on osteolysis has not been determined. In this study, we found that Car has a strong inhibitory effect on the receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclast differentiation dose-dependently without any observable cytotoxicity. Moreover, Car can inhibit the RANKL-induced osteoclastogenesis and resorptive function via suppressing NFATc1, which is a result of affecting MAPK, NF-κB and Ca2+ signaling pathways. Moreover, the particle-induced osteolysis mouse model confirmed that Car could be effective for the treatment of bone loss in vivo. Taken together, by suppressing the formation and function of RANKL-induced osteoclast, Car, may be a therapeutic supplementary in the prevention or the treatment of osteolysis.
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Affiliation(s)
- Yongxian Li
- The First Clinical Academy, Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
- School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Sipeng Lin
- Orthopaedic Department, Memorial Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Panjie Liu
- The First Clinical Academy, Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jianbin Huang
- Orthopaedic Department, Memorial Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Junxiong Qiu
- Orthopaedic Department, Memorial Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Zhenkang Wen
- Orthopaedic Department, Memorial Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jinbo Yuan
- School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Heng Qiu
- School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Yuhao Liu
- The First Clinical Academy, Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
- School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Qian Liu
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Tengpeng Zhou
- The First Clinical Academy, Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Peijie Luo
- The First Clinical Academy, Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Huizhi Guo
- The First Clinical Academy, Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yanhuai Ma
- The First Clinical Academy, Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Danqing Guo
- The First Clinical Academy, Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Guoye Mo
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yongchao Tang
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Liangliang Xu
- The First Clinical Academy, Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - De Liang
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiake Xu
- School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Yue Ding
- Orthopaedic Department, Memorial Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Shuncong Zhang
- The First Clinical Academy, Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
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20
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Kim SC, Kim HJ, Park GE, Pandey RP, Lee J, Sohng JK, Park YI. Trilobatin ameliorates bone loss via suppression of osteoclast cell differentiation and bone resorptive function in vitro and in vivo. Life Sci 2021; 270:119074. [PMID: 33497739 DOI: 10.1016/j.lfs.2021.119074] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 12/27/2022]
Abstract
AIM Due to on-going safety concerns or lack of efficacy of currently used medications for the treatment of osteoporosis (OP), identifying new therapeutic agents is an important part of research. In the present study, potential anti-osteoporotic activity of a natural flavonoid glycoside, trilobatin (phloretin 4-O-glucoside, Tri) was evaluated. MATERIAL AND METHODS Osteoclastic cells were established by treating the RAW264.7 macrophage cells with RANKL and ovariectomized (OVX) C57BL/6 female mice were used as an animal model of postmenopausal OP. Actin ring formation, expression levels of osteoclastogenic marker genes and bone resorptive proteins were measured by RT-PCR, western blot, or fluorometric assays. Bone mineral density (BMD) was determined by pDEXA densitometric measurement and serum osteoprotegerin (OPG) and RANKL were measured by ELISA. KEY FINDING Tri (5-20 μM) significantly inhibited osteoclast formation and actin ring formation in RANKL-induced osteoclasts. Tri attenuated expression of osteoclastogenic genes (MMP-9 and cathepsin K), bone resorptive proteins (CA II and integrin β3), and osteoclastogenic signalling proteins (TRAF6, p-Pyk2, c-Cbl, and c-Src). Oral administration of Tri to OVX mice augmented BMD and serum OPG/RANKL ratio. Interestingly, while Tri and phloretin aglycone (Phl) showed similar levels of in vitro anti-osteoclastogenic activity, Tri more potently ameliorated bone loss than Phl in OVX mice. SIGNIFICANCE This study demonstrated that Tri inhibits osteoclastic cell differentiation and bone resorption by down-regulating the expression of osteoclastogenic marker genes and signalling proteins, bone resorptive proteins, and by augmenting serum OPG/RANKL ratio, suggesting that Tri can be a novel anti-osteoporotic compound for treating senile and postmenopausal OP.
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Affiliation(s)
- Seong Cheol Kim
- Department of Biotechnology, The Catholic University of Korea, Bucheon, Gyeonggi-do 14662, Republic of Korea
| | - Hyeon Jeong Kim
- Department of Biotechnology, The Catholic University of Korea, Bucheon, Gyeonggi-do 14662, Republic of Korea
| | - Gi Eun Park
- Department of Biotechnology, The Catholic University of Korea, Bucheon, Gyeonggi-do 14662, Republic of Korea
| | - Ramesh Prasad Pandey
- Department of Life Science and Biochemical Engineering, Sun Moon University, Chungnam 31460, Republic of Korea
| | - Jisun Lee
- Department of Biotechnology, The Catholic University of Korea, Bucheon, Gyeonggi-do 14662, Republic of Korea
| | - Jae Kyung Sohng
- Department of Life Science and Biochemical Engineering, Sun Moon University, Chungnam 31460, Republic of Korea
| | - Yong Il Park
- Department of Biotechnology, The Catholic University of Korea, Bucheon, Gyeonggi-do 14662, Republic of Korea.
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21
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Li X, Lin X, Wu Z, Su Y, Liang J, Chen R, Yang X, Hou L, Zhao J, Liu Q, Xu F. Pristimerin Protects Against OVX-Mediated Bone Loss by Attenuating Osteoclast Formation and Activity via Inhibition of RANKL-Mediated Activation of NF-κB and ERK Signaling Pathways. DRUG DESIGN DEVELOPMENT AND THERAPY 2021; 15:61-74. [PMID: 33442237 PMCID: PMC7800467 DOI: 10.2147/dddt.s283694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 12/02/2020] [Indexed: 11/23/2022]
Abstract
Introduction Osteoporosis is an osteolytic bone condition characterized by decreased bone strength and increased bone fragility. It is the result of elevated formation or activity of bone-resorbing osteoclasts. Although current therapeutic agents are efficacious against osteoclast-mediated bone loss, detrimental side effects preclude the long-term use of these agents. Pristimerin (PRI) is a naturally occurring quinone-methide triterpenoid that has been revealed to exert anti-inflammatory and anti-tumor effects via regulating various signaling cascades including NF-κB and MAPK activation. Methods The bone marrow macrophages were used to confirm the anti-osteoclastic and anti-resorptive functions of PRI in vitro. An in vivo ovariectomy (OVX) model was applied to verify the function of PRI protecting bone loss. Results PRI abolished the early activation of NF-κB and ERK MAPK signal cascades thereby thwarting the downstream expression of c-Fos and NFATc1, which prevented the production of mature osteoclasts. In vivo, PRI protects mice against ovariectomy (OVX)-mediated bone loss by diminishing osteoclast formation and bone resorptive activity. Conclusion Our study shows that PRI demonstrates therapeutic potential in the effective treatment against osteoclast-induced osteolytic diseases like osteoporosis.
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Affiliation(s)
- Xuedong Li
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China.,Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Xixi Lin
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China.,Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Zuoxing Wu
- School of Medicine, Xiamen University, Xiamen, Fujian 361102, People's Republic of China
| | - Yuangang Su
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China.,Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Jiamin Liang
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China.,Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Runfeng Chen
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China.,Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Xue Yang
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China.,Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Lei Hou
- Department of Cardiology, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Jinmin Zhao
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China.,Research Centre for Regenerative Medicine, Orthopaedic Department, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Qian Liu
- Research Centre for Regenerative Medicine, Orthopaedic Department, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Feng Xu
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China.,Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China.,Department of Subject Planning Shanghai, Ninth People's Hospital Shanghai, Jiaotong University School of Medicine, Shanghai 200011, People's Republic of China
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Alvim CP, Figueiredo RC, Sousa CT, Silva RADS, Ferreira SM, Guidoni CM, Obreli-Neto PR, Baldoni AO. Irrational use of alendronate sodium by the elderly. REVISTA BRASILEIRA DE MEDICINA DE FAMÍLIA E COMUNIDADE 2020. [DOI: 10.5712/rbmfc15(42)2310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Introduction: The effectiveness and safety of alendronate sodium are dependent on patient adherence to very specific guidelines regarding use. This study aims to estimate the rational use of alendronate sodium in the elderly. Methods: This is a cross-sectional study carried out with a structured questionnaire containing form of use and occurrence of adverse events related to alendronate sodium. The patients were recruited in their own homes. Rational use was considered as being the participants who: a) took the tablet in the morning; b) were fasting; c) waited at least 30 minutes before eating; d) ingested with a full glass of water; e) ingested the whole tablet; f) and remained in the orthostatic position for at least 30 minutes after use. Additionally, the odds ratio (OR) was used to analyze the association between the irrational use of alendronate sodium and the independent variables. Results and Discussion: Of the 248 participants in the study, most of the participants administered the medication in the morning (95.2%), with fasting (89.1%), waited at least 30 minutes to eat the first meal of the day (87.9%), and were in the orthostatic position until the time of the first meal (78.6%), but less than half ingested the tablet with a full glass of water (43.6%). Rational use of the medication was observed in only 30.7% of the participants. Regarding possible adverse events, 13.3% of the participants reported some event. Among the most prevalent were dry cough (6.5%), stomach pain (5.2%) and some throat discomfort (4.8%). The irrational use of this medication is associated with age and education level. Conclusion: The prevalence of irrational use of alendronate sodium in the elderly is high, and this use is associated with patients’ sociodemographic factors.
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Group medical consultation for osteoporosis: a prospective pilot study of patient experience in Canadian tertiary care. Br J Gen Pract 2020; 70:e801-e808. [PMID: 33020167 DOI: 10.3399/bjgp20x713081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 05/07/2020] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND Delivery of patient-centred care is limited by physician time. Group medical consultations may save physician time without compromising patient experience. AIM To assess patient experience and specialist physician time commitment in a group consultation for osteoporosis. DESIGN AND SETTING Prospective pilot study at a tertiary osteoporosis centre in Canada between May 2016 and June 2019. METHOD The authors evaluated women referred for osteoporosis who chose a 2-hour group consultation instead of a one-to-one consultation. Group consultations were led by an osteoporosis nurse and specialist physician, and consisted of individualised fracture risk assessment and education regarding osteoporosis therapies, followed by a decision-making exercise to choose a treatment plan. Patients then followed up with their GPs to implement this plan. Patient experience was assessed via a questionnaire immediately and 3 months post-consultation, at which time GP satisfaction and patient treatment status were also surveyed. RESULTS Of 560 referrals received, 18 patients declined osteoporosis specialist assessment, 54 could not be contacted, 303 attended a one-to- one consultation, and 185 attended a group consultation. Mean participant age was 62.8 years (standard deviation [SD] 5.8) and the Fracture Risk Assessment Tool (FRAX) 10-year osteoporotic fracture risk was 13.0 (SD 7.0)%. Immediately post-consultation, 104 (97.2%) patients were satisfied and 102 (95.3%) felt included in decision making. Satisfaction was reported by 95/99 (96.0%) patients and 27/36 (75.0%) GPs. Treatment plans had been enacted by 90 (90.1%) patients. For a matched number of individual consultations, each group session conferred a specialist physician time savings of 5.5 hours. CONCLUSION Group consultations represent a satisfactory and time-efficient alternative to one-to-one consultations for select patients with osteoporosis.
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Abstract
PURPOSE OF REVIEW Recent evidence from clinical trials and observational studies raises the possibility that bisphosphonate use might confer a lower risk of cardiovascular disease and cancer, resulting in a mortality benefit. This review summarizes clinical and preclinical studies examining the non-skeletal effects of bisphosphonates. RECENT FINDINGS Data from clinical trials are conflicting regarding whether or not bisphosphonates have beneficial effects on mortality, cardiovascular events, or cancer incidence. No clinical trials have assessed these outcomes as primary endpoints, and most trials were shorter than 4 years. Observational data suggest that bisphosphonate users may have lower mortality, delayed progression of vascular calcification and atherosclerotic burden, and reduced incidence of breast and colorectal cancer compared to non-users. Preclinical studies confirm that bisphosphonates can be taken up by macrophages and monocytes, and nitrogen-containing bisphosphonates have the ability to disrupt the mevalonate pathway within these cells. In this manner, bisphosphonates exert anti-atherogenic and anti-cancer effects. Bisphosphonates also appear to exert protective effects on vascular smooth muscle cells and endothelial cells and may have direct cytotoxic effects on cancer cells. The balance of evidence does not support bisphosphonate treatment for the primary purpose of improving non-skeletal outcomes, although appropriately designed controlled trials that further explore this possibility are both justified and required. Patients with skeletal indications for bisphosphonate therapy can be reassured that these agents are not associated with increased mortality, cardiovascular disease, or cancer incidence.
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Affiliation(s)
- Emma O Billington
- Division of Endocrinology & Metabolism, Cumming School of Medicine, University of Calgary, Calgary, Canada.
- Richmond Road Diagnostic & Treatment Centre, 1820 Richmond Road SW, Calgary, Alberta, T2T 5C7, Canada.
| | - Ian R Reid
- Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
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Wilton-Clark MS, Feasel AL, Kline GA, Billington EO. Autonomy begets adherence: decisions to start and persist with osteoporosis treatment after group medical consultation. Arch Osteoporos 2020; 15:138. [PMID: 32888079 DOI: 10.1007/s11657-020-00809-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 08/17/2020] [Indexed: 02/03/2023]
Abstract
UNLABELLED Many individuals prescribed osteoporosis pharmacotherapy either do not start or do not persist with treatment. In this study, women who attended a group medical visit at an osteoporosis center which involved fracture risk assessment and focused on autonomous decision-making made treatment decisions with high confidence. Those who started pharmacotherapy were highly persistent. PURPOSE Adherence and persistence with osteoporosis pharmacotherapy is low, possibly reflecting lack of confidence in physicians' treatment recommendations. We evaluated treatment decisions, decisional confidence, and 12-month treatment adherence among women who attended a group bone health consultation that fostered autonomous decision-making. METHODS We prospectively assessed postmenopausal women referred to an osteoporosis clinic who chose to attend a group medical visit in lieu of one-on-one consultation. The group visit was facilitated by a specialist physician and nurse, involving estimation of 10-year major osteoporotic fracture risk (using FRAX®) and extensive education regarding fracture consequences and potential advantages and disadvantages of pharmacotherapy. No direct advice was given by the specialist. Post-consult, participants made an autonomous decision regarding treatment intent and followed up with their family physician to enact their chosen plan. Intentions to initiate pharmacotherapy were assessed immediately post-consult. Treatment status and decisional confidence were evaluated 3 and 12 months later. Three-month treatment status was considered to reflect final treatment decision. Persistence was defined as proportion of participants on treatment at 3 months who remained treated at 12 months. RESULTS One hundred one women (mean (SD) age, 62.7 years (5.8); median (IQR) FRAX®, 10.7% (8.3-17.6)) participated. Immediately post-consult, 27 (26.7%) intended to initiate treatment. At 3 months, 23 (22.8%) were treated, and at 12 months, 21 (91.3%) remained persistent. Of 89 questionnaire respondents at 12 months, 85 (95.5%) reported confidence in their treatment decision. CONCLUSION When postmenopausal women are provided with individualized fracture risk estimates and enabled to make autonomous decisions regarding pharmacotherapy, ultimate decisions to receive treatment are made with confidence and result in high persistence at 12 months.
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Affiliation(s)
- Madeline S Wilton-Clark
- Undergraduate Medical Education, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - A Lynn Feasel
- Dr. David Hanley Osteoporosis Centre, Alberta Health Services, Calgary, Alberta, Canada.,Richmond Road Diagnostic and Treatment Centre, 1820 Richmond Road SW, Calgary, Alberta, T2T 5C7, Canada
| | - Gregory A Kline
- Dr. David Hanley Osteoporosis Centre, Alberta Health Services, Calgary, Alberta, Canada.,Richmond Road Diagnostic and Treatment Centre, 1820 Richmond Road SW, Calgary, Alberta, T2T 5C7, Canada.,Division of Endocrinology and Metabolism, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Emma O Billington
- Dr. David Hanley Osteoporosis Centre, Alberta Health Services, Calgary, Alberta, Canada. .,Richmond Road Diagnostic and Treatment Centre, 1820 Richmond Road SW, Calgary, Alberta, T2T 5C7, Canada. .,Division of Endocrinology and Metabolism, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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Do Older Adults With Reduced Bone Mineral Density Benefit From Strength Training? A Critically Appraised Topic. J Sport Rehabil 2020; 29:833-840. [PMID: 31835241 DOI: 10.1123/jsr.2019-0170] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 08/16/2019] [Accepted: 10/15/2019] [Indexed: 11/18/2022]
Abstract
Clinical Scenario: Reduced bone mineral density (BMD) is a serious condition in older adults. The mild form, osteopenia, is often a precursor of osteoporosis. Osteoporosis is a pathological condition and a global health problem as it is one of the most common diseases in developed countries. Finding solutions for prevention and therapy should be prioritized. Therefore, the critically appraised topic focuses on strength training as a treatment to counteract a further decline in BMD in older adults. Clinical Question: Is strength training beneficial in increasing BMD in older people with osteopenia or osteoporosis? Summary of Key Findings: Four of the 5 reviewed studies with the highest evidence showed a significant increase in lumbar spine BMD after strength training interventions in comparison with control groups. The fifth study confirmed the maintenance of lumbar spine density due to conducted exercises. Moreover, 3 reviewed studies revealed increasing BMD at the femoral neck after strength training when compared with controls, which appeared significant in 2 of them. Clinical Bottom Line: The findings indicate that strength training has a significant positive influence on BMD in older women (ie, postmenopausal) with osteoporosis or osteopenia. However, it is not recommended to only rely on strength training as the increase of BMD may not appear fast enough to reach the minimal desired values. A combination of strength training and supplements/medication seems most adequate. Generalization of the findings to older men with reduced BMD should be done with caution due to the lack of studies. Strength of Recommendation: There is grade B of recommendation to support the validity of strength training for older women in postmenopausal phase with reduced BMD.
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Hauger AV, Bergland A, Holvik K, Emaus N, Strand BH. Can bone mineral density loss in the non-weight bearing distal forearm predict mortality? Bone 2020; 136:115347. [PMID: 32240848 DOI: 10.1016/j.bone.2020.115347] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/04/2020] [Accepted: 03/27/2020] [Indexed: 01/03/2023]
Abstract
PURPOSE Low bone mineral density (BMD) is associated with increased risk of fractures and mortality. We investigated if rate of BMD loss in the distal forearm over seven years predicted mortality. METHODS 1725 postmenopausal women and 1879 men aged 50-74 who participated in the longitudinal Tromsø Study waves 4 (1994-95) and 5 (2001-2002) were included. Cox regression models adjusted for lifestyle- and health related variables were used to assess associations between BMD change over seven years and subsequent mortality during up to 17 years of follow-up in participants with normal and low BMD at baseline. RESULTS Baseline BMD decreased and seven-year bone loss increased with increasing age. Overall, mortality rates were higher among those with low versus normal BMD (38 vs 19 per 1000 py in women, 56 vs 34 in men) and at higher bone loss rates (rate ratio high:low = 1.2 in women, 1.7 in men). BMD change was associated with increased mortality only in men with normal baseline BMD. In this group, men with a BMD loss of >4% had significantly higher mortality (HR 1.50, 95% CI 1.21, 1.87) than men with increased or unchanged BMD. BMD change was not significantly associated with increased mortality in women or in men with low BMD at baseline. CONCLUSIONS BMD loss in the distal forearm was associated with increased mortality in men with normal BMD at baseline, but not in women. We found no clear association between BMD loss and mortality in those with low BMD at baseline.
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Affiliation(s)
- Annette V Hauger
- Department of Physiotherapy, Faculty of Health Sciences, Oslo Metropolitan University, Postboks 4 St. Olavs plass, 0130 Oslo, Norway; Department of Chronic Diseases and Ageing, Norwegian Institute of Public Health, Marcus Thranes gate 6, 0473 Oslo, Norway.
| | - Astrid Bergland
- Department of Physiotherapy, Faculty of Health Sciences, Oslo Metropolitan University, Postboks 4 St. Olavs plass, 0130 Oslo, Norway
| | - Kristin Holvik
- Department of Chronic Diseases and Ageing, Norwegian Institute of Public Health, Marcus Thranes gate 6, 0473 Oslo, Norway
| | - Nina Emaus
- Department of Health and Care Sciences, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway
| | - Bjørn Heine Strand
- Department of Chronic Diseases and Ageing, Norwegian Institute of Public Health, Marcus Thranes gate 6, 0473 Oslo, Norway; Norwegian National Advisory Unit on Aging and Health, Vestfold, Hospital Trust, Tønsberg, Norway; Faculty of Medicine, University of Oslo, Oslo, Norway
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Zeng Y, Zhou M, Mou S, Yang J, Yuan Q, Guo L, Zhong A, Wang J, Sun J, Wang Z. Sustained delivery of alendronate by engineered collagen scaffold for the repair of osteoporotic bone defects and resistance to bone loss. J Biomed Mater Res A 2020; 108:2460-2472. [PMID: 32419333 DOI: 10.1002/jbm.a.36997] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 04/09/2020] [Accepted: 04/19/2020] [Indexed: 12/17/2022]
Abstract
Researches of biomaterials for osteoporotic bone defects focus on the improvement of its anti-osteoporosis ability, due to osteoporosis is a kind of systemic and long-range bone metabolism disorder. Nevertheless, how to steadily deliver anti-osteoporosis drugs in osteoporotic bone defects is rarely studied. Reported evidences have shown that alendronate (Aln) is known to not only restrain osteoclasts from mediating bone resorption but also stimulate osteoblasts to regenerate bone tissue. Here, we developed an engineered implantable scaffold that could sustainably release Aln for osteoporotic bone defects. Briefly, Aln was added into 2% collagen (Col) solution to form a 5 mg/ml mixture. Then the mixture was filled into pre-designed round models (diameter: 5 mm, height: 2 mm) and crosslinked to obtain engineered Col-Aln scaffolds. The release kinetics showed that Aln was released at an average rate of 2.99 μg/d in the initial 8 days and could sustainably release for 1 month. To detect the repair effects of the Col-Aln scaffolds for osteoporotic defects, the Col and Col-Aln scaffolds were implanted into 5 mm cranial defects in ovariectomized rats. After 3 months, the cranial defects implanted with Col-Aln scaffolds achieved more bone regeneration in defect area (11.74 ± 3.82%) than Col scaffold (5.12 ± 1.15%) (p < .05). Moreover, ovariectomized rats in Col-Aln scaffold group possessed more trabecular bone in femur metaphysis than Col scaffold group as analyzed by Micro-CT. This study demonstrated the engineered Col-Aln scaffold has the potential to repair osteoporotic bone defects and resist bone loss in osteoporosis.
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Affiliation(s)
- Yuyang Zeng
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Wuhan Clinical Research Center for Superficial Organ Reconstruction, Wuhan, China
| | - Muran Zhou
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Wuhan Clinical Research Center for Superficial Organ Reconstruction, Wuhan, China
| | - Shan Mou
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Wuhan Clinical Research Center for Superficial Organ Reconstruction, Wuhan, China
| | - Jie Yang
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Wuhan Clinical Research Center for Superficial Organ Reconstruction, Wuhan, China
| | - Quan Yuan
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Wuhan Clinical Research Center for Superficial Organ Reconstruction, Wuhan, China
| | - Liang Guo
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Wuhan Clinical Research Center for Superficial Organ Reconstruction, Wuhan, China
| | - Aimei Zhong
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Wuhan Clinical Research Center for Superficial Organ Reconstruction, Wuhan, China
| | - Jiecong Wang
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Wuhan Clinical Research Center for Superficial Organ Reconstruction, Wuhan, China
| | - Jiaming Sun
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Wuhan Clinical Research Center for Superficial Organ Reconstruction, Wuhan, China
| | - Zhenxing Wang
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Wuhan Clinical Research Center for Superficial Organ Reconstruction, Wuhan, China
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Hwang YH, Jang SA, Lee A, Cho CW, Song YR, Hong HD, Ha H, Kim T. Polysaccharides isolated from lotus leaves (LLEP) exert anti-osteoporotic effects by inhibiting osteoclastogenesis. Int J Biol Macromol 2020; 161:449-456. [PMID: 32531355 DOI: 10.1016/j.ijbiomac.2020.06.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 05/25/2020] [Accepted: 06/08/2020] [Indexed: 12/21/2022]
Abstract
Nelumbo nucifera, more commonly known as the Indian lotus, is an important plant that has been incorporated into traditional herbal remedies along the years. Even today, lotus leaves are considered reservoirs for bioactive compounds that can be used as nutritional supplements to treat various human diseases. However, despite the wide ranging biological activities of lotus polysaccharides, limited information is available regarding the anti-osteoporotic effects of these substances. The aim of this study was to investigate the beneficial effects of pectinase-assisted extractable polysaccharides from lotus leaves (LLEP) on estrogen deficiency-induced bone loss and osteoclast differentiation in bone marrow-derived macrophages. We found that LLEP markedly inhibited receptor activator of the nuclear factor-κB ligand (RANKL)-induced osteoclast differentiation in a dose-dependent manner. It also revoked RANKL-induced activation of osteoclastogenic signals such as the expression of key transcription factors (i.e., c-Fos and nuclear factor of activated T cells cytoplasmic 1), resulting in a decrement in osteoclast-specific marker gene expressions. Microcomputed tomography and morphometric analysis revealed that a four-week oral administration of LLEP notably decreased trabecular bone loss. Taken together, our results suggest that LLEP can mitigate estrogen deficiency-induced bone loss by suppressing osteoclastogenesis, which makes it an excellent candidate for combating osteoporosis.
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Affiliation(s)
- Youn-Hwan Hwang
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea; University of Science & Technology (UST), Korean Convergence Medicine Major KIOM, Daejeon 34054, Republic of Korea
| | - Seon-A Jang
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Ami Lee
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea; University of Science & Technology (UST), Korean Convergence Medicine Major KIOM, Daejeon 34054, Republic of Korea
| | - Chang-Won Cho
- Korea Food Research Institute, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Young-Ran Song
- Korea Food Research Institute, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Hee-Do Hong
- Korea Food Research Institute, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Hyunil Ha
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea.
| | - Taesoo Kim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea.
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Ladang A, Beaudart C, Locquet M, Reginster JY, Bruyère O, Cavalier E. Evaluation of a Panel of MicroRNAs that Predicts Fragility Fracture Risk: A Pilot Study. Calcif Tissue Int 2020; 106:239-247. [PMID: 31729554 DOI: 10.1007/s00223-019-00628-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/29/2019] [Indexed: 02/07/2023]
Abstract
The assessment of fragility fracture risk based on bone densitometry and FRAX°, although commonly used, has shown some limitations. MicroRNAs (miRNAs) are promising biomarkers known to regulate post-transcriptional gene expression. Many studies have already shown that microRNAs are involved in bone homeostasis by modulating osteoblast and osteoclast gene expression. In this pilot study, we investigated the ability of an miRNA panel (namely, the OsteomiR° score) to predict fragility fracture risk in older people. miRNAs were extracted from the sera of 17 persons who developed a fracture within 3 years of collecting the serum and 16 persons who did not experience fractures in the same period. Nineteen miRNAs known to be involved in bone homeostasis were assessed, and 10 miRNAs were employed to calculate the OsteomiR° score. We found a trend towards higher OsteomiR° scores in individuals who experienced fractures compared to control subjects. The most suitable cut-off that maximized sensitivity and specificity was determined by ROC curve analysis, and a positive predictive value of 68% and a sensitivity of 76% were obtained. The OsteomiR° score was higher in osteopenic and osteoporotic subjects compared to subjects with a normal T score. Additionally, the OsteomiR° score predicted more fracture events than the recommended "need-to-treat" thresholds based on FRAX° 10-year probability. miRNAs reflect impairments in bone homeostasis several years before the occurrence of a fracture. The OsteomiR° score seems to be a promising miRNA panel for fragility fracture risk prediction and might have added value compared to FRAX°. Given the limited cohort size, further studies should be dedicated to validating the OsteomiR° score.
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Affiliation(s)
- Aurélie Ladang
- Clinical Chemistry Department / CHU de Liège, Avenue de L'Hopital, 1, 4000, Liège, Belgium.
| | - Charlotte Beaudart
- Public Health, Epidemiology and Health Economics Department, ULiège, Liège, Belgium
| | - Médéa Locquet
- Public Health, Epidemiology and Health Economics Department, ULiège, Liège, Belgium
| | - Jean-Yves Reginster
- Public Health, Epidemiology and Health Economics Department, ULiège, Liège, Belgium
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
- Centre Académique de Recherche Et D'Expérimentation en Santé (CARES SPRL), Liège, Belgium
| | - Olivier Bruyère
- Public Health, Epidemiology and Health Economics Department, ULiège, Liège, Belgium
| | - Etienne Cavalier
- Clinical Chemistry Department / CHU de Liège, Avenue de L'Hopital, 1, 4000, Liège, Belgium
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6'-Methoxy Raloxifene-analog enhances mouse bone properties with reduced estrogen receptor binding. Bone Rep 2020; 12:100246. [PMID: 32016137 PMCID: PMC6992940 DOI: 10.1016/j.bonr.2020.100246] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 01/15/2020] [Indexed: 02/08/2023] Open
Abstract
Raloxifene (RAL) is an FDA-approved drug used to treat osteoporosis in postmenopausal women. RAL suppresses bone loss primarily through its role as a selective estrogen receptor modulator (SERM). This hormonal estrogen therapy promotes unintended side effects, such as hot flashes and increased thrombosis risk, and prevents the drug from being used in some patient populations at-risk for fracture, including children with bone disorders. It has recently been demonstrated that RAL can have significant positive effects on overall bone mechanical properties by binding to collagen and increasing bone tissue hydration in a cell-independent manner. A Raloxifene-Analog (RAL-A) was synthesized by replacing the 6-hydroxyl substituent with 6-methoxy in effort to reduce the compound's binding affinity for estrogen receptors (ER) while maintaining its collagen-binding ability. It was hypothesized that RAL-A would improve the mechanical integrity of bone in a manner similar to RAL, but with reduced estrogen receptor binding. Molecular assessment showed that while RAL-A did reduce ER binding, downstream ER signaling was not completely abolished. In-vitro, RAL-A performed similarly to RAL and had an identical concentration threshold on osteocyte cell proliferation, differentiation, and function. To assess treatment effect in-vivo, wildtype (WT) and heterozygous (OIM+/−) female mice from the Osteogenesis Imperfecta (OI) murine model were treated with either RAL or RAL-A from 8 weeks to 16 weeks of age. There was an untreated control group for each genotype as well. Bone microarchitecture was assessed using microCT, and mechanical behavior was assessed using 3-point bending. Results indicate that both compounds produced analogous gains in tibial trabecular and cortical microarchitecture. While WT mechanical properties were not drastically altered with either treatment, OIM+/− mechanical properties were significantly enhanced, most notably, in post-yield properties including bone toughness. This proof-of-concept study shows promising results and warrants the exploration of additional analog iterations to further reduce ER binding and improve fracture resistance.
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Billington EO, Feasel AL, Kline GA. At Odds About the Odds: Women's Choices to Accept Osteoporosis Medications Do Not Closely Agree with Physician-Set Treatment Thresholds. J Gen Intern Med 2020; 35:276-282. [PMID: 31625042 PMCID: PMC6957614 DOI: 10.1007/s11606-019-05384-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 07/22/2019] [Accepted: 09/04/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Osteoporosis guidelines recommend pharmacologic therapy based on 10-year risk of major osteoporotic fracture (MOF) and hip fracture, which may fail to account for patient-specific experiences and values. OBJECTIVE We aimed to determine whether patient decisions to initiate osteoporosis medication agree with guideline-recommended intervention thresholds. DESIGN AND PARTICIPANTS This prospective cohort study included women aged ≥ 45 with age-associated osteoporosis who attended a group osteoporosis self-management consultation at a tertiary osteoporosis center. INTERVENTION A group osteoporosis self-management consultation, during which participants received osteoporosis education and then calculated1 their 10-year MOF and hip fracture risk using FRAX and2 their predicted absolute fracture risk with therapy (assuming 40% relative reduction). Participants then made autonomous decisions regarding treatment initiation. MAIN MEASURES We evaluated agreement between treatment decisions and physician-set intervention thresholds (10-year MOF risk ≥ 20%, hip fracture risk ≥ 3%). KEY RESULTS Among 85 women (median [IQR] age 62 [58-67]), 27% accepted treatment (median [IQR] MOF risk, 15.1% [9.9-22.0]; hip fracture risk, 3.3% [1.3-5.3]), 46% declined (MOF risk, 9.5% [6.5-11.6]; hip fracture risk, 1.8% [0.6-2.3]), and 27% remained undecided (MOF risk, 14.0% [9.8-20.2]; hip fracture risk, 4.4% [1.7-4.9]). There was wide overlap in fracture risk between treatment acceptors and non-acceptors. Odds of accepting treatment were higher in women with prior fragility fracture (50% accepted; OR, 5.3; 95% CI, 1.9-15.2; p = 0.0015) and with hip fracture risk ≥ 3% (32% accepted; OR, 3.6; 95% CI, 1.4-9.2; p = 0.012), but not MOF risk ≥ 20% (47% accepted; OR, 3.0; 95% CI, 1.0-8.5; p = 0.105). CONCLUSIONS Informed decisions to start osteoporosis treatment are highly personal and not easily predicted using fracture risk. Guideline-recommended intervention thresholds may not permit sufficient consideration of patient preferences.
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Affiliation(s)
- Emma O Billington
- Division of Endocrinology & Metabolism, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada. .,Dr. David Hanley Osteoporosis Centre, Alberta Health Services, Calgary, Alberta, Canada.
| | - A Lynn Feasel
- Dr. David Hanley Osteoporosis Centre, Alberta Health Services, Calgary, Alberta, Canada
| | - Gregory A Kline
- Division of Endocrinology & Metabolism, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Dr. David Hanley Osteoporosis Centre, Alberta Health Services, Calgary, Alberta, Canada
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Choi MH, Lee K, Kim MY, Shin HI, Jeong D. Pisidium coreanum Inhibits Multinucleated Osteoclast Formation and Prevents Estrogen-Deficient Osteoporosis. Int J Mol Sci 2019; 20:ijms20236076. [PMID: 31810213 PMCID: PMC6929078 DOI: 10.3390/ijms20236076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/28/2019] [Accepted: 11/29/2019] [Indexed: 01/25/2023] Open
Abstract
Mollusks have served as important sources of human food and medicine for a long time. Raw Pisidium coreanum, a freshwater bivalve of the phylum Mollusca, is used in traditional therapies in parts of Asia. However, the therapeutic effects of Pisidium coreanum on bone diseases are not known. We investigated the functional roles of Pisidium coreanum in osteoporotic bone diseases. Pisidium coreanum inhibited the differentiation of bone marrow-derived monocytic cells into mature osteoclasts in vitro. The ovariectomized mice that received oral administration of Pisidium coreanum showed improvements in both trabecular and cortical bones. This preventive activity of Pisidium coreanum against bone loss was due to limited osteoclast maturation with reduced osteoclast surface extent in trabecular bone tissue. The formation of large multinucleated osteoclasts in vitro was significantly decreased in response to Pisidium coreanum, consistent with the reduced expression levels of osteoclast markers and fusion-related genes, such as NFATc1, p65, integrinαvβ3, DC-STAMP, OC-STAMP, Atp6v0d2, FAK, CD44, and MFR. These data suggest that Pisidium coreanum inhibits osteoclast differentiation by negatively regulating the fusion of mononuclear osteoclast precursors. Thus, our data demonstrate the ability of Pisidium coreanum to effectively prevent estrogen-deficient osteoporosis through inhibition of multinucleated osteoclast formation.
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Affiliation(s)
- Mun Hwan Choi
- Department of Microbiology, Laboratory of Bone Metabolism and Control, Yeungnam University College of Medicine, Daegu 42415, Korea; (M.H.C.); (K.L.); (M.Y.K.)
| | - Kyunghee Lee
- Department of Microbiology, Laboratory of Bone Metabolism and Control, Yeungnam University College of Medicine, Daegu 42415, Korea; (M.H.C.); (K.L.); (M.Y.K.)
| | - Mi Yeong Kim
- Department of Microbiology, Laboratory of Bone Metabolism and Control, Yeungnam University College of Medicine, Daegu 42415, Korea; (M.H.C.); (K.L.); (M.Y.K.)
| | - Hong-In Shin
- Department of Oral Pathology, Institute for Hard Tissue and Bio-Tooth Regeneration, School of Dentistry, Kyungpook National University, Daegu 41940, Korea;
| | - Daewon Jeong
- Department of Microbiology, Laboratory of Bone Metabolism and Control, Yeungnam University College of Medicine, Daegu 42415, Korea; (M.H.C.); (K.L.); (M.Y.K.)
- Correspondence: ; Tel.: +82-53-640-6944; Fax: +82-53-657-6869
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Powell KM, Skaggs C, Pulliam A, Berman A, Allen MR, Wallace JM. Zoledronate and Raloxifene combination therapy enhances material and mechanical properties of diseased mouse bone. Bone 2019; 127:199-206. [PMID: 31233931 PMCID: PMC7036744 DOI: 10.1016/j.bone.2019.06.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/19/2019] [Accepted: 06/20/2019] [Indexed: 01/15/2023]
Abstract
Current interventions to reduce skeletal fragility are insufficient at enhancing both the quantity and quality of bone when attempting to improve overall mechanical integrity. Bisphosphonates, such as Zoledronate (ZOL), are used to treat a variety of bone disorders by increasing bone mass to decrease fracture risk, but long-term use has been shown in some settings to compromise bone quality. Alternatively, Raloxifene (RAL) has recently been demonstrated to improve tissue quality and overall mechanical properties in a cell-independent manner by binding to collagen and increasing tissue hydration. We hypothesized that a combination of RAL and ZOL would improve mechanical and material properties of bone more than either monotherapy alone by enhancing both quantity and quality. In this study, wildtype (WT) and heterozygous (OIM+/-) male mice from the Osteogenesis Imperfecta (OI) murine model were treated with either RAL, ZOL, or both from 8 weeks to 16 weeks of age. Using the OIM model allows for investigation of therapeutic effects on a quality-based bone disease. Combination treatment resulted in higher trabecular architecture, cortical mechanical properties, and cortical fracture toughness in diseased mouse bone. Two fracture toughness properties, which are direct measures of the tissue's ability to resist the initiation and propagation of a crack, were significantly improved with combination treatment in OIM+/- compared to control. There was no significant effect on fracture toughness with either monotherapy alone in either genotype. Following the mass-based effects of ZOL, trabecular bone volume fraction was significantly higher with combination treatment in both genotypes. Combination treatment resulted in higher ultimate stress in both genotypes. RAL and combination treatment in OIM+/- also increased resilience compared to the control. In conclusion, this study demonstrates the beneficial effects of using combination drug treatments to increase bone mass while simultaneously improving tissue quality, especially to enhance the mechanical integrity of diseased bone. Combination therapies could be a potential method to improve bone health and combat skeletal fragility on both the microscopic and macroscopic levels.
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Affiliation(s)
- Katherine M Powell
- Department of Biomedical Engineering, Indiana University-Purdue University at Indianapolis, Indianapolis, IN, USA
| | - Cayla Skaggs
- Department of Biomedical Engineering, Indiana University-Purdue University at Indianapolis, Indianapolis, IN, USA
| | - Alexis Pulliam
- Department of Biomedical Engineering, Indiana University-Purdue University at Indianapolis, Indianapolis, IN, USA
| | - Alycia Berman
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
| | - Matthew R Allen
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Joseph M Wallace
- Department of Biomedical Engineering, Indiana University-Purdue University at Indianapolis, Indianapolis, IN, USA.
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Deng M, Zeng XJ, He LC, Leung JCS, Kwok AWL, Griffith JF, Kwok T, Leung PC, Wáng YXJ. Osteoporotic Vertebral Fracture Prevalence in Elderly Chinese Men and Women: A Comparison of Endplate/Cortex Fracture-Based and Morphometrical Deformity-Based Methods. J Clin Densitom 2019; 22:409-419. [PMID: 29307693 DOI: 10.1016/j.jocd.2017.11.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/14/2017] [Accepted: 11/17/2017] [Indexed: 11/16/2022]
Abstract
This study aims to evaluate endplate/cortex fracture (ECF)-based method for detecting osteoporotic vertebral fracture (VF) in elderly Chinese population (age ≥ 65 years). The radiographs of 1954 elderly Chinese men (mean: 72.3 years) and 1953 elderly Chinese women (mean: 72.5 years) were evaluated according to Genant's morphometrical vertebral deformity (VD) severity criteria, as well as identified VF according to ECF without necessary requirement of VD. According to ECF, grade-1, -2, and -3 VF prevalence was 1.89%, 1.74%, and 2.25% in men, and 3.33%, 3.07%, and 5.89% in women, respectively. In men and women, 15.7% (35 of 223) and 34.5% (48 of 139) of vertebrae with VD grade-1 deformity were ECF(+, with fracture), respectively. In men and women, 89.7% (35 of 39) and 66.7% (48 of 72) of vertebrae with ECF grade-1 fracture had VD grade-1 deformity. For grade-1 change, ECF(+) subjects tended to have a lower BMD than the VD(+) subjects. In subjects with VD grade-2 deformity, those who were also EC (+) tended to have a lower BMD than those were ECF(-). In all grades, VD(-) and ECF(-) subjects tended to have highest BMD, whereas VD(+) and ECF(+) subjects tended to have lowest BMD. ECF may be more specific for assessing mild VF than the criteria based on vertebral deformity.
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Affiliation(s)
- Min Deng
- Department of Imaging and Interventional Radiology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - Xian Jun Zeng
- Department of Imaging and Interventional Radiology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China; Department of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Lai-Chang He
- Department of Imaging and Interventional Radiology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China; Department of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jason C S Leung
- JC Centre for Osteoporosis Care and Control, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - Anthony W L Kwok
- JC Centre for Osteoporosis Care and Control, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - James F Griffith
- Department of Imaging and Interventional Radiology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - Timothy Kwok
- JC Centre for Osteoporosis Care and Control, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China; Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - Ping Chung Leung
- JC Centre for Osteoporosis Care and Control, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - Yì Xiáng J Wáng
- Department of Imaging and Interventional Radiology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China.
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Nutrient Intake Prior to Exercise Is Necessary for Increased Osteogenic Marker Response in Diabetic Postmenopausal Women. Nutrients 2019; 11:nu11071494. [PMID: 31261978 PMCID: PMC6682903 DOI: 10.3390/nu11071494] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/21/2019] [Accepted: 06/25/2019] [Indexed: 01/17/2023] Open
Abstract
Type 2 diabetes increases bone fracture risk in postmenopausal women. Usual treatment with anti-resorptive bisphosphonate drugs has some undesirable side effects, which justified our interest in the osteogenic potential of nutrition and exercise. Since meal eating reduces bone resorption, downhill locomotion increases mechanical stress, and brief osteogenic responsiveness to mechanical stress is followed by several hours of refractoriness, we designed a study where 40-min of mechanical stress was manipulated by treadmill walking uphill or downhill. Exercise preceded or followed two daily meals by one hour, and the meals and exercise bouts were 7 hours apart. Fifteen subjects each performed two of five trials: No exercise (SED), uphill exercise before (UBM) or after meals (UAM), and downhill exercise before (DBM) or after meals (DAM). Relative to SED trial, osteogenic response, defined as the ratio of osteogenic C-terminal propeptide of type I collagen (CICP) over bone-resorptive C-terminal telopeptide of type-I collagen (CTX) markers, increased in exercise-after-meal trials, but not in exercise-before-meal trials. CICP/CTX response rose significantly after the first exercise-after-meal bout in DAM, and after the second one in UAM, due to a greater CICP rise, and not a decline in CTX. Post-meal exercise, but not the pre-meal exercise, also significantly lowered serum insulin response and homeostatic model (HOMA-IR) assessment of insulin resistance.
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Isolated Compounds from Turpinia formosana Nakai Induce Ossification. Int J Mol Sci 2019; 20:ijms20133119. [PMID: 31247918 PMCID: PMC6651545 DOI: 10.3390/ijms20133119] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 06/24/2019] [Accepted: 06/24/2019] [Indexed: 02/06/2023] Open
Abstract
Bone metabolism is a homeostatic process, imbalance in which leads to the onset of diseases such as osteoporosis and osteopenia. Although several drugs are currently available to treat such conditions, they are associated with severe side effects and do not enhance bone formation. Thus, identifying alternative treatment strategies that focus on enhancing bone formation is essential. Herein, we explored the osteogenic potential of Turpinia formosana Nakai using human osteoblast (HOb) cells. The plant extract was subjected to various chromatographic techniques to obtain six compounds, including one new compound: 3,3′-di-O-methylellagic acid-4-O-α-l-arabinofuranoside (1). Compounds 3,3′-di-O-methylellagic acid-4-O-α-l-arabinofuranoside (1), gentisic acid 5-O-β-d-(6′-O-galloyl) glucopyranoside (2), strictinin (3), and (-)-epicatechin-3-O-β-d-allopyranoside (6) displayed no significant cytotoxicity toward HOb cells, and thus their effects on various osteogenic markers were analyzed. Results showed that 1–3 and 6 significantly increased alkaline phosphatase (ALP) activity up to 120.0, 121.3, 116.4, and 125.1%, respectively. Furthermore, 1, 2, and 6 also markedly enhanced the mineralization process with respective values of up to 136.4, 118.9, and 134.6%. In addition, the new compound, 1, significantly increased expression levels of estrogen receptor-α (133.4%) and osteogenesis-related genes of Runt-related transcription factor 2 (Runx2), osteopontin (OPN), bone morphogenetic protein (BMP)-2, bone sialoprotein (BSP), type I collagen (Col-1), and brain-derived neurotropic factor (BDNF) by at least 1.5-fold. Our results demonstrated that compounds isolated from T. formosana possess robust osteogenic potential, with the new compound, 1, also exhibiting the potential to enhance the bone formation process. We suggest that T. formosana and its isolated active compounds deserve further evaluation for development as anti-osteoporotic agents.
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Wang Q, Yao L, Xu K, Jin H, Chen K, Wang Z, Liu Q, Cao Z, kenny J, Liu Y, Tickner J, Xu H, Xu J. Madecassoside inhibits estrogen deficiency-induced osteoporosis by suppressing RANKL-induced osteoclastogenesis. J Cell Mol Med 2019; 23:380-394. [PMID: 30338925 PMCID: PMC6307845 DOI: 10.1111/jcmm.13942] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 12/31/2022] Open
Abstract
Osteoporosis is the most common osteolytic disease characterized by excessive osteoclast formation and resultant bone loss, which afflicts millions of patients around the world. Madecassoside (MA), isolated from Centella asiatica, was reported to have anti-inflammatory and antioxidant activities, but its role in osteoporosis treatment has not yet been confirmed. In our study, MA was found to have an inhibitory effect on the RANKL-induced formation and function of OCs in a dose-dependent manner without cytotoxicity. These effects were attributed to its ability to suppress the activity of two transcription factors (NFATc1 and c-Fos) indispensable for osteoclast formation, followed by inhibition of the expression of bone resorption-related genes and proteins (Acp5/TRAcP, CTSK, ATP6V0D2/V-ATPase-d2, and integrin β3). Furthermore, we examined the underlying mechanisms and found that MA represses osteoclastogenesis by blocking Ca2+ oscillations and the NF-κB and MAPK pathways. In addition, the therapeutic effect of MA on preventing bone loss in vivo was further confirmed in an ovariectomized mouse model. Therefore, considering its ability to inhibit RANKL-mediated osteoclastogenesis and the underlying mechanisms, MA might be a potential candidate for treating osteolytic bone diseases.
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Affiliation(s)
- Qingqing Wang
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityZhejiangChina
- School of Biomedical SciencesThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - Lingya Yao
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityZhejiangChina
| | - Ke Xu
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityZhejiangChina
| | - Haiming Jin
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityZhejiangChina
- School of Biomedical SciencesThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - Kai Chen
- School of Biomedical SciencesThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - Ziyi Wang
- School of Biomedical SciencesThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - Qian Liu
- Research Centre for Regenerative Medicine and Guangxi Key Laboratory of Regenerative MedicineGuangxi Medical UniversityGuangxiChina
| | - Zhen Cao
- Department of Biomedical Materials ScienceThird Military Medical UniversityChongqingChina
| | - Jacob kenny
- School of Biomedical SciencesThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - Yuhao Liu
- School of Biomedical SciencesThe University of Western AustraliaPerthWestern AustraliaAustralia
- The Lab of Orthopaedics and Traumatology of Lingnan Medical Research CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Jennifer Tickner
- School of Biomedical SciencesThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - Huazi Xu
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityZhejiangChina
| | - Jiake Xu
- Department of OrthopaedicsThe Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityZhejiangChina
- School of Biomedical SciencesThe University of Western AustraliaPerthWestern AustraliaAustralia
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Sreeja PS, Arunachalam K, Martins DTDO, Lima JCDS, Balogun SO, Pavan E, Saikumar S, Dhivya S, Kasipandi M, Parimelazhagan T. Sphenodesme involucrata var. paniculata (C.B. Clarke) Munir.: Chemical characterization, anti-nociceptive and anti-inflammatory activities of methanol extract of leaves. JOURNAL OF ETHNOPHARMACOLOGY 2018; 225:71-80. [PMID: 29960023 DOI: 10.1016/j.jep.2018.06.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 06/21/2018] [Accepted: 06/25/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sphenodesme involucrata var. paniculata (C. B. Clarke) Munir is native as well as endemic to South India. Its leaves are used in folklore medicine to treat pain and rheumatism. OBJECTIVE This study was aimed to investigate the chemical characterization, anti-nociceptive and mode of action underlying the anti-inflammatory effects of methanol extract of S. involucrata leaves (MESi). METHODS Phytoconstituents of MESi was analyzed using colorimetric and liquid chromatography-mass spectrometry (LC-MS) methods, and the oral acute toxicity was evaluated in mice up to 2000 mg/kg. The anti-nociceptive effect was evaluated in hot plate and writhing tests; whereas the anti-inflammatory effect was investigated using carrageenan, cotton pellet and lipopolysaccharide (LPS)-induced peritonitis models at doses of 100, 200 and 400 mg/kg. Additionally nitric oxide (NO) and inflammatory cytokines levels were also evaluated. RESULTS MESi exhibited the high content of phenolics and flavonoids as well as compounds like austricine, benzylglucosinolate, gossypin, justicidin B and cirsimarin were detected in LC-MS. In the acute toxicity study, oral administration of MESi did not cause any toxic effect and mortality up to 2000 mg/kg body weight in mice. In the anti-nociceptive tests, MESi augmented the latency period at higher dose (400 mg/kg), on the other hand attenuated writhings at the dose of 400 mg/kg by 87.87% (p < 0.001). In the carrageenan induced paw oedema MESi significantly inhibited the oedema formation at dose 400 mg/kg by 32.1%; besides, anti-inflammatory effect was registered in the cotton pellets-induced inflammation model at doses 200 and 400 mg/kg by 27.09% (p < 0.001) and 35.47% (p < 0.001) respectively. On the other hand, MESi appreciably reduced leukocyte, neutrophils infiltration, nitric oxide, TNF-α and IL-1β levels and increased the IL-10 level in the (LPS)-induced peritonitis model. CONCLUSION The results conclude that MESi has no acute toxic effect and it demonstrated potent anti-nociceptive and anti-inflammatory activities. Its anti-nociceptive activities are probably mediated through peripheral and central mechanisms. The anti-inflammatory effect of MESi involved the inhibition of neutrophils migration and the modulation of Th1 and Th2 cytokines, besides the attenuation of production of PGE2 and NO. LC-MS analysis revealed the predominant presence of the austricine, benzylglucosinolate, gossypin, justicidin B and cirsimarin compounds, which are possibly involved in the anti-nociceptive and anti-inflammatory effects of MESi. The current study provided supportive evidence for the folklore use of S. involucrata in the treatment of pain and inflammatory conditions.
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Affiliation(s)
| | - Karuppusamy Arunachalam
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil
| | | | - Joaquim Corsino da Silva Lima
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil
| | - Sikiru Olaitan Balogun
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil; Faculdade Noroeste do Mato Grosso, Acadêmia Juinense de Ensino Superior LTDA-ME (AJES), Juína, Mato Grosso, Brazil
| | - Eduarda Pavan
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil
| | - Sathyanarayanan Saikumar
- Bioprospecting Lab, Department of Botany, Bharathiar University (BU), Coimbatore, Tamil Nadu, India
| | - Sivaraj Dhivya
- Bioprospecting Lab, Department of Botany, Bharathiar University (BU), Coimbatore, Tamil Nadu, India
| | - Muniyandi Kasipandi
- Bioprospecting Lab, Department of Botany, Bharathiar University (BU), Coimbatore, Tamil Nadu, India
| | - Thangaraj Parimelazhagan
- Bioprospecting Lab, Department of Botany, Bharathiar University (BU), Coimbatore, Tamil Nadu, India.
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Medication-related osteonecrosis of the jaw: definition and best practice for prevention, diagnosis, and treatment. Oral Surg Oral Med Oral Pathol Oral Radiol 2018; 127:117-135. [PMID: 30393090 DOI: 10.1016/j.oooo.2018.09.008] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 08/16/2018] [Accepted: 09/27/2018] [Indexed: 12/20/2022]
Abstract
Skeletal complications caused by osteoporosis or bone metastases are associated with considerable pain, increased mortality, and reduced quality of life. Furthermore, such events place a burden on health care resources. Agents that prevent bone resorption, such as bisphosphonates or denosumab, can reduce the risk of skeletal-related events and are widely used in patients with osteoporosis or bone metastases of cancer. Medication-related osteonecrosis of the jaw (MRONJ) is a rare, but potentially serious, adverse event associated with high cumulative doses of bisphosphonates or denosumab. However, MRONJ can be treated, and the likelihood of the development of this condition can be reduced through prophylactic dental care and the maintenance of good oral hygiene. Dentists, as part of a multiprofessional team, have a critical role in preventing MRONJ. This review describes the incidence and pathophysiology of MRONJ and provides guidance for dental practitioners with regard to the screening, prophylactic treatment, diagnosis, and management of patients with this condition.
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Saul D, Harlas B, Ahrabi A, Kosinsky RL, Hoffmann DB, Wassmann M, Wigger R, Böker KO, Sehmisch S, Komrakova M. Effect of Strontium Ranelate on the Muscle and Vertebrae of Ovariectomized Rats. Calcif Tissue Int 2018; 102:705-719. [PMID: 29242963 DOI: 10.1007/s00223-017-0374-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 12/06/2017] [Indexed: 12/18/2022]
Abstract
Osteoporosis is often accompanied by sarcopenia. The effect of strontium ranelate (SR) on muscle tissue has not been investigated sufficiently. In this study, the effect of different SR treatments on muscle was studied. Additionally, the lumbar vertebrae were analyzed. Three-month-old female rats were divided into five groups (n = 12): Group 1: untreated (NON-OVX); Group 2: ovariectomized and left untreated (OVX); Group 3: SR after OVX until the study ended (13 weeks, SR prophylaxis and therapy = pr+th); Group 4: OVX and SR for 8 weeks (SR prophylaxis = pr); Group 5: SR for 5 weeks from the 8 week after OVX (SR therapy = SR th). SR was applied in food (630 mg/kg body weight). The size of muscle fibers, capillary density, metabolic enzymes, and mRNA expression were assessed in soleus, gastrocnemius, and longissimus muscles. The vertebral bodies underwent micro-CT, biomechanical, and ashing analyses. In general, SR did not alter the muscle histological parameters. The changes in fiber size and capillary ratio were related to the body weight. Myostatin mRNA was decreased in Sr pr+th; protein expression was not changed. SR th led to increase in mRNA expression of vascular endothelial growth factor (Vegf-B). In lumbar spine, SR pr+th enhanced biomechanical properties, bone mineral density, trabecular area, density, and thickness and cortical density. The reduced calcium/phosphate ratio in the SR pr+th group indicates the replacement of calcium by strontium ions. SR has no adverse effects on muscle tissue and it shows a favorable time-dependent effect on vertebrae. A functional analysis of muscles could verify these findings.
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Affiliation(s)
- D Saul
- Department of Trauma Surgery, Orthopaedics and Plastic Surgery, University Medical Center Goettingen, Robert-Koch Str. 40, 37075, Göettingen, Germany
| | - B Harlas
- Department of Trauma Surgery, Orthopaedics and Plastic Surgery, University Medical Center Goettingen, Robert-Koch Str. 40, 37075, Göettingen, Germany
| | - A Ahrabi
- Department of Trauma Surgery, Orthopaedics and Plastic Surgery, University Medical Center Goettingen, Robert-Koch Str. 40, 37075, Göettingen, Germany
| | - R L Kosinsky
- Department of General, Visceral and Pediatric Surgery, University Medical Center Goettingen, 37075, Göettingen, Germany
| | - D B Hoffmann
- Department of Trauma Surgery, Orthopaedics and Plastic Surgery, University Medical Center Goettingen, Robert-Koch Str. 40, 37075, Göettingen, Germany
| | - M Wassmann
- Medical Institute of General Hygiene and Environmental Health, University of Goettingen, 37075, Göettingen, Germany
| | - R Wigger
- Department of Animal Science, University of Goettingen, 37075, Göettingen, Germany
| | - K O Böker
- Department of Trauma Surgery, Orthopaedics and Plastic Surgery, University Medical Center Goettingen, Robert-Koch Str. 40, 37075, Göettingen, Germany
| | - S Sehmisch
- Department of Trauma Surgery, Orthopaedics and Plastic Surgery, University Medical Center Goettingen, Robert-Koch Str. 40, 37075, Göettingen, Germany
| | - M Komrakova
- Department of Trauma Surgery, Orthopaedics and Plastic Surgery, University Medical Center Goettingen, Robert-Koch Str. 40, 37075, Göettingen, Germany.
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Abstract
Osteoporosis, characterized by low bone mass and micro-architectural deterioration of bone tissue with increased risk of fracture, can be categorized into two forms: primary and secondary, depending on whether it occurs as part of the natural aging process (estrogen deficiency) or as part of disease pathology. In both forms bone loss is due to an imbalance in the bone remodeling process, with resorption/formation skewed more toward bone loss. Recent studies and emerging evidence consistently demonstrate the potential of the intestinal microbiota to modulate bone health. This review discusses the process of bone remodeling and the pathology of osteoporosis and introduces the intestinal microbiota and its potential to influence bone health. In particular, we highlight recent murine studies that examine how probiotic supplementation can both increase bone density in healthy individuals and protect against primary (estrogen deficiency) as well as secondary osteoporosis. Potential mechanisms are described to account for how probiotic treatments could be exerting their beneficial effect on bone health.
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Walter E, Dellago H, Grillari J, Dimai HP, Hackl M. Cost-utility analysis of fracture risk assessment using microRNAs compared with standard tools and no monitoring in the Austrian female population. Bone 2018; 108:44-54. [PMID: 29269173 DOI: 10.1016/j.bone.2017.12.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 11/14/2017] [Accepted: 12/16/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND Osteoporosis poses an immense burden to the society in terms of morbidity, mortality and financial cost. To reduce this burden, it is essential to accurately assess the individual patient's fracture risk and, where indicated, to initiate appropriate treatment that reduces fracture probability. Current screening and monitoring approaches include utilization of FRAX®, a web-based country-specific fracture risk assessment tool, and bone mineral density measurement by Dual Energy X-ray Absorptiometry (DXA). Recently, microRNAs have been recognized as important regulators of bone physiology and potential biomarkers for fracture risk assessment and monitoring. A fracture risk assessment tool based on microRNAs (osteomiR™ test) is currently being developed. The aim of this study was to estimate the cost-effectiveness of fracture risk screening, monitoring, and resulting treatment decisions for the Austrian female population using the osteomiR™ test compared with DXA, with FRAX®, or with no screening/monitoring. METHODS A cost-utility-model was developed to simulate long-term consequences of Austrian women from age 50 over lifetime or death with respect to osteoporosis. Markov-modelling techniques were used to calculate health state transitions of fracture incidence according to risk groups (high, intermediate, low). High-risk patients receive medical treatment. Probabilities were derived via systematic-literature-review; direct costs (2015, €) from published sources from the payer's perspective. Results evaluate the incremental cost-effectiveness ratios (ICER) for osteomiR™ against the comparators, gains or losses of fractures, life years (LYs), quality-adjusted life years (QALYs), and direct costs. QALYs, life years (LYs) and costs were discounted (3% p.a). RESULTS Fracture risk assessment and monitoring using the osteomiR™ test reduces fracture incidence compared with no monitoring, DXA alone, or FRAX® alone. In the per-patient analysis, the ICER/QALY of osteomiR™ vs. no-monitoring was 13,103 €, vs. FRAX® 37,813 €, and vs. DXA -19,605 €, indicating that costs can be saved while gaining QALYs. Considering the total cohort over lifetime, the osteomiR™ test can avoid 57,919 fractures compared with DXA, 31,285 fractures compared with FRAX® and 133,394 fractures compared with no monitoring. Sensitivity analysis confirmed the robustness of these findings. CONCLUSION Fracture risk assessment and monitoring using the osteomiR™ test dominates DXA-strategy and constitutes a cost-effective alternative to FRAX®, and no-monitoring, respectively.
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Affiliation(s)
- Evelyn Walter
- Institute for Pharmaeconomic Research, Vienna, Austria
| | | | - Johannes Grillari
- University of Natural Resources and Life Sciences Vienna, Department of Biotechnology, Vienna, Austria
| | - Hans Peter Dimai
- Medical University of Graz, Department of Internal Medicine, Division of Endocrinology and Diabetology, Graz, Austria
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Popa I. Reply to comment on Andrei et al.: The variability of vertebral body volume and pain associated with osteoporotic vertebral fractures: conservative treatment versus percutaneous transpedicular vertebroplasty. INTERNATIONAL ORTHOPAEDICS 2018; 42:971-972. [PMID: 29417174 DOI: 10.1007/s00264-017-3749-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 12/19/2017] [Indexed: 10/18/2022]
Affiliation(s)
- Iulian Popa
- Victor Babes University of Medicine and Pharmacy, Timisoara, Romania.
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Lee YK, Ahn S, Kim KM, Suh CS, Koo KH. Incidence Rate of Atypical Femoral Fracture after Bisphosphonates Treatment in Korea. J Korean Med Sci 2018; 33:e38. [PMID: 29349947 PMCID: PMC5773851 DOI: 10.3346/jkms.2018.33.e38] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 11/07/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Atypical femoral fracture (AFF) has been high-lightened, because it was associated with the long-term use of bisphosphonate. Comparing western countries, the incidence rate of AFF was unclear in East Asian patients. Our purposes were to estimate the incidence rate of radiologically defined AFF in Korea, and to determine the association between occurrence of AFF and long-term use of bisphosphonate. METHODS We conducted a hospital-based, retrospective cohort study in patients aged ≥ 45 years, who took bisphosphonate. The occurrence of AFF was estimated by using incidence rate, and the age-adjusted incidence rate to U.S. 2010 Census data. The association between occurrence of AFF and the duration of bisphosphonate use was examined. The cumulative probability of AFF was plotted per each duration of bisphosphonate use. RESULTS Among 10,338 individuals who took bisphosphonate, 13 patients with AFF following use of bisphosphonate were identified. The incidence rate was 85.9/100,000 person-years (95% confidence interval [CI], 50.2-146.9), and age-adjusted incidence rate was 72.7/100,000 person-years (95% CI, 29.1-175.8). In Poisson regression analysis, higher body mass index (BMI) was associated with an increased risk of AFF (relative risk, 1.2; 95% CI, 1.004-1.359). The cumulative probability of AFF increased abruptly when the duration of bisphosphonate use was 4 years or more. CONCLUSION Among Korean patients, the incidence rate of AFF was on a par with those of western countries, and this can provide basic information to conduct further studies by evaluating risk and benefit of continuing bisphosphonate.
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Affiliation(s)
- Young Kyun Lee
- Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Soyeon Ahn
- Medical Research Collaborating Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Kyoung Min Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Chang Suk Suh
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung Hoi Koo
- Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
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Cipriani C, Pepe J, Clementelli C, Manai R, Colangelo L, Fassino V, Nieddu L, Minisola S. Effect of a single intravenous zoledronic acid administration on biomarkers of acute kidney injury (AKI) in patients with osteoporosis: a pilot study. Br J Clin Pharmacol 2017; 83:2266-2273. [PMID: 28543687 DOI: 10.1111/bcp.13332] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 03/14/2017] [Accepted: 05/13/2017] [Indexed: 12/26/2022] Open
Abstract
AIMS The pilot study was designed to evaluate the early effect of intravenous (i.v.) zoledronic acid (ZA) on renal function. METHODS Five mg i.v. ZA was administered to 23 patients with osteoporosis (17 women and 6 men, mean age 73 ± 7 SD years). Urinary NGAL, KIM-1, and MCP-1, plasma (p) MCP-1 and serum (s) IL-18, serum calcium (sCa), Creatinine clearance (CrCl), parathyroid hormone (PTH), plasma C-terminal FGF23 (pFGF23), serum (s) Klotho, calcium excretion (CaEx) and renal threshold phosphate concentration/GFR (TmPO4 /GFR) were assessed at baseline, 24 h and Day 30 after administration. RESULTS There was a significant decrease in sCa and CaEx at 24 h (-4.1 ± 2.8%, P < 0.01 and -28 ± 59%, P < 0.05, respectively) and Day 30 (-3.9 ± 4%, P < 0.001 and -26 ± 43%, P < 0.01) and a significant increase in PTH (79.8 ± 95.8%) at Day 30 (P < 0.001) compared to baseline. TmPO4 /GFR decreased significantly at 24 h and Day 30 (-8.6 ± 15.9%, P < 0.05 and -11.3 ± 13.5%, P < 0.001) compared to baseline. We observed no difference in the concentration of pFGF23, sKlotho and urinary AKI biomarkers at any time points. Mean levels of sIL-18 and pMCP-1 increased significantly at 24 h (44 ± 88%; P < 0.01 and 198 ± 237%; P < 0.001) and returned to baseline at Day 30. CONCLUSIONS Our pilot study suggests that there is no direct acute effect of ZA on kidney function. The increase in plasma MCP-1 and serum IL-18 concentration could be associated with the stimulation of immunity mechanisms occurring soon after the administration of the drug. Secondary hyperparathyroidism develops shortly after the infusion of ZA and is maintained even after 1 month.
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Affiliation(s)
- Cristiana Cipriani
- Department of Internal Medicine and Medical Disciplines, 'Sapienza' University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Jessica Pepe
- Department of Internal Medicine and Medical Disciplines, 'Sapienza' University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Carolina Clementelli
- Department of Internal Medicine and Medical Disciplines, 'Sapienza' University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Rizieri Manai
- Department of Internal Medicine and Medical Disciplines, 'Sapienza' University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Luciano Colangelo
- Department of Internal Medicine and Medical Disciplines, 'Sapienza' University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Valeria Fassino
- Department of Internal Medicine and Medical Disciplines, 'Sapienza' University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Luciano Nieddu
- Faculty of Economics, UNINT University, Via Cristoforo Colombo 200, 00147, Rome, Italy
| | - Salvatore Minisola
- Department of Internal Medicine and Medical Disciplines, 'Sapienza' University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
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Vedia Urgell C, Massot Mesquida M, Valles Fernandez R, Garcia Vicente JA, Franzi Siso A, Muñoz Ortiz L, Vilaró Jaques L, Bosch Peligero M. [Adequacy of treatment for osteoporosis in primary prevention. Quantitative and qualitative study]. Aten Primaria 2017; 50:6-15. [PMID: 28416363 PMCID: PMC6837104 DOI: 10.1016/j.aprim.2017.01.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 01/19/2017] [Indexed: 11/25/2022] Open
Abstract
Objetivo Estudio cuantitativo: conocer la prevalencia de inadecuación del tratamiento para la osteoporosis en prevención primaria (OPP) en mujeres de 60-74 años. Estudio cualitativo: conocer los criterios diagnósticos y de tratamiento de la OPP y su variabilidad en médicos de atención primaria (AP) y especialistas. Material y método Estudio cuantitativo: estudio observacional, transversal y retrospectivo. Población: mujeres de 60-74 años con tratamiento activo para la OPP (n = 424) en mayo del 2012. Se consideró inadecuación si presentaban ≤ 2 factores de riesgo con DXA realizada o con DXA T-score ≥ −2,4. Estudio cualitativo: técnica Delphi (15 ítems) y dos rondas de consulta. Periodo: marzo-abril del 2014. Población: médicos AP, reumatólogos y traumatólogos (n = 251). Muestreo aleatorio. Resultados Estudio cuantitativo: grado de inadecuación del 63,4%. En el 43,2% no constaba diagnóstico de osteoporosis. En el 82,3% no constaban factores de riesgo. Tratamiento: 40,3% con bisfosfonatos y 47,9% con calcio + vitamina D. Estudio cualitativo: el 23% respondieron a la primera ronda y, de estos, el 67% a la segunda ronda. Los ítems con mayor acuerdo fueron valoración de factores de riesgo para el diagnóstico y bisfosfonatos como tratamiento. Los ítems con menor consenso fueron utilización del FRAX y densitometría y tratamiento solo con calcio + vitamina D. Conclusiones El porcentaje de inadecuación es alto. El grado de registro en historia clínica es bajo. La metodología Delphi es útil para detectar discrepancias entre recomendaciones de guías de práctica clínica y resultados.
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Affiliation(s)
- Cristina Vedia Urgell
- Unitat de Farmàcia, Direcció d'Atenció Primària Metropolitana Nord, Institut Català de la Salut, Barcelona, España; Facultad de Medicina, Universitat Autònoma de Barcelona, Barcelona, España.
| | - Mireia Massot Mesquida
- Unitat de Farmàcia, Direcció d'Atenció Primària Metropolitana Nord, Institut Català de la Salut, Barcelona, España
| | - Roser Valles Fernandez
- Unitat de Farmàcia, Direcció d'Atenció Primària Metropolitana Nord, Institut Català de la Salut, Barcelona, España
| | - Juan Antonio Garcia Vicente
- Unitat de Farmàcia, Direcció d'Atenció Primària Metropolitana Nord, Institut Català de la Salut, Barcelona, España; Facultad de Medicina, Universitat Autònoma de Barcelona, Barcelona, España
| | - Alicia Franzi Siso
- Unitat de Farmàcia, Direcció d'Atenció Primària Metropolitana Nord, Institut Català de la Salut, Barcelona, España
| | | | - Laia Vilaró Jaques
- Farmàcia, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, España
| | - Maite Bosch Peligero
- Unitat de Farmàcia, Direcció d'Atenció Primària Metropolitana Nord, Institut Català de la Salut, Barcelona, España
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Chen HY, Ma KY, Hsieh PL, Liou YS, Jong GP. Long-term Effects of Antihypertensive Drug Use and New-onset Osteoporotic Fracture in Elderly Patients: A Population-based Longitudinal Cohort Study. Chin Med J (Engl) 2017; 129:2907-2912. [PMID: 27958221 PMCID: PMC5198524 DOI: 10.4103/0366-6999.195472] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Background: Antihypertensive drugs have been linked to new-onset osteoporotic fracture (NOF), and different classes of antihypertensive drugs may alter the risk for the development of NOF; however, the classic effect of different antihypertensive drugs on the development of NOF in the elderly has not been well studied during long-term follow-up. Methods: In this study, we investigated the association between different classic antihypertensives and the development of NOF in the elderly. This was a longitudinal cohort study performed using data from claim forms submitted to the Taiwan Bureau of National Health Insurance in Central Taiwan, China including case patients with NOF aged 65–80 years from January 2002 to December 2012 and non-NOF controls. Prescriptions for antihypertensives before the index date were retrieved from a prescription database. We estimated the hazard ratios (HRs) of NOF associated with antihypertensive use. Non-NOF controls served as the reference group. Results: A total of 128 patients with NOF were identified from among 1144 patients with hypertension during the study period. The risk of NOF after adjusting age, sex, comorbidities, and concurrent medications was higher among the users of angiotensin-converting enzyme (ACE) inhibitors (HR, 1.64; 95% confidence interval [CI], 1.01–2.66) than among nonusers. Patients who took calcium channel blockers (CCBs) (HR, 0.70; 95% CI, 0.49–0.99) were at a lower risk of developing NOF than nonusers. Loop diuretics, thiazide diuretics, angiotensin receptor blocker, beta-blocker, and alpha-blocker were not associated with the risk of NOF. Conclusions: Elderly with hypertension who take CCBs are at a lower risk of NOF and that the use of ACE inhibitors was associated with a significantly increased risk of developing NOF during the 11-year follow-up.
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Affiliation(s)
- Hung-Yi Chen
- Institute of Pharmacy, China Medical University, Taichung, Taiwan 40402; Department of Pharmacy, China Medical University Beigang Hospital, Yunlin County, Taiwan 65152, China
| | - Kai-Yan Ma
- Department of Endocrinology and Metabolism, Shangluo Central Hospital, Shangluo, Shaanxi 726000, China
| | - Pei-Ling Hsieh
- Institute of Pharmacy, China Medical University, Taichung, Taiwan 40402, China
| | - Yi-Sheng Liou
- Department of Family Medicine and Geriatrics, School of Public Health, National Defense Medical Center, Taichung Veteran General Hospital, Taichung, Taiwan 40705, China
| | - Gwo-Ping Jong
- Division of Internal Cardiology, Chung Shan Medical University Hospital, Chung Shan Medical University, Taichung, Taiwan 40201; Department of Basic Science, Central Taiwan University of Science and Technology, Taichung, Taiwan 40601, China
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Malihi Z, Wu Z, Stewart AW, Lawes CM, Scragg R. Hypercalcemia, hypercalciuria, and kidney stones in long-term studies of vitamin D supplementation: a systematic review and meta-analysis. Am J Clin Nutr 2016; 104:1039-1051. [PMID: 27604776 DOI: 10.3945/ajcn.116.134981] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 08/03/2016] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Vitamin D supplementation is increasingly being used in higher doses in randomized controlled trials (RCTs). However, adverse events from very large annual doses of vitamin D have been shown in 2 RCTs, whereas in a third RCT, low-dose vitamin D, with calcium supplements, was shown to increase kidney stone risk. OBJECTIVE We analyzed the side effects related to calcium metabolism in RCTs, specifically hypercalcemia, hypercalciuria, and kidney stones, in participants who were given vitamin D supplements for ≥24 wk compared with in subjects in the placebo arm. DESIGN The following 3 main online databases were searched: Ovid Medline (PubMed), EMBASE, and the Cochrane Library. Software was used for the meta-analysis. RESULTS A total of 48 studies with 19,833 participants were identified, which reported ≥1 of the following side effects: hypercalcemia, hypercalciuria, or kidney stones. Of these studies, kidney stones were reported in only 9 trials with a tendency for fewer subjects reporting stones in the vitamin D arm than in the placebo arm (RR: 0.66, 95% CI: 0.41, 1.09; P = 0.10). In 37 studies, hypercalcemia was shown with increased risk shown for the vitamin D group (RR: 1.54; 95% CI: 1.09, 2.18; P = 0.01). Similar increased risk of hypercalciuria was shown in 14 studies for the vitamin D group (RR: 1.64; 95% CI: 1.06, 2.53; P = 0.03). In subgroup analyses, it was shown that the effect of vitamin D supplementation on risk of hypercalcemia, hypercalciuria, or kidney stones was not modified by baseline 25-hydroxyvitamin D, vitamin D dose and duration, or calcium co-supplementation. CONCLUSIONS Long-term vitamin D supplementation resulted in increased risks of hypercalcemia and hypercalciuria, which were not dose related. However, vitamin D supplementation did not increase risk of kidney stones. Additional large RCTs of long-term vitamin D supplementation are required to confirm these findings.
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Affiliation(s)
- Zarintaj Malihi
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - Zhenqiang Wu
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - Alistair W Stewart
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - Carlene Mm Lawes
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - Robert Scragg
- School of Population Health, University of Auckland, Auckland, New Zealand
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50
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Abstract
Osteoporosis is a metabolic bone disorder that is characterized by low bone mass and micro-architectural deterioration of bone tissue. Fractures of the proximal femur, the vertebrae and the distal radius are the most frequent osteoporotic fractures, although most fractures in the elderly are probably at least partly related to bone fragility. The incidence of fractures varies greatly by country, but on average up to 50% of women >50 years of age are at risk of fractures. Fractures severely affect the quality of life of an individual and are becoming a major public health problem owing to the ageing population. Postmenopausal osteoporosis, resulting from oestrogen deficiency, is the most common type of osteoporosis. Oestrogen deficiency results in an increase in bone turnover owing to effects on all types of bone cells. The imbalance in bone formation and resorption has effects on trabecular bone (loss of connectivity) and cortical bone (cortical thinning and porosity). Osteoporosis is diagnosed using bone density measurements of the lumbar spine and proximal femur. Preventive strategies to improve bone health include diet, exercise and abstaining from smoking. Fractures may be prevented by reducing falls in high-risk populations. Several drugs are licensed to reduce fracture risk by slowing down bone resorption (such as bisphosphonates and denosumab) or by stimulating bone formation (such as teriparatide). Improved understanding of the cellular basis for osteoporosis has resulted in new drugs targeted to key pathways, which are under development.
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