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Strunz F, Gentil-Perret S, Siegrist M, Bohner M, Saulacic N, Hofstetter W. Bisphosphonates do not affect healing of a critical-size defect in estrogen-deficient mice. Bone Rep 2024; 20:101739. [PMID: 38304619 PMCID: PMC10831175 DOI: 10.1016/j.bonr.2024.101739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/15/2024] [Indexed: 02/03/2024] Open
Abstract
Bisphosphonates (BP) are anti-resorptive drugs that are widely used to prevent bone loss in osteoporosis. Since inhibition of bone resorption will cause a decrease in bone formation through a process called coupling, it is hypothesized that extended treatment protocols may impair bone healing. In this study, β-tri‑calcium-phosphate (βTCP) ceramics were inserted into critical-size long bone defects in estrogen-deficient mice under BP therapy. The study assessed the benefits of coating the ceramics with Bone Morphogenetic Protein-2 (BMP2) and an engineered BMP2 analogue (L51P) that inactivates BMP antagonists on the healing process, implant resorption, and bone formation. Female NMRI mice (11-12 weeks of age) were ovariectomized (OVX) or sham operated. Eight weeks later, after the manifestation of ovariectomy-induced osteoporotic bone changes, BP therapy with Alendronate (ALN) was commenced. After another five weeks, a femoral critical-size defect was generated, rigidly fixed, and βTCP-cylinders loaded with 0.25 μg or 2.5 μg BMP2, 2.5 μg L51P, and 0.25 μg BMP2/2.5 μg L51P, respectively, were inserted. Unloaded βTCP-cylinders were used as controls. Femora were collected six and twelve weeks post-implantation. Histological and micro-computer tomography (MicroCT) evaluation revealed that insertion of cylinders coated with 2.5 μg BMP2 accelerated fracture repair and induced significant bone formation compared to controls (unloaded cylinders or coated with 2.5 μg L51P, 0.25 μg BMP2) already six weeks post-implantation, independent of estrogen-deficiency and BP therapy. The simultaneous administration of BMP2 and L51P (0.25 μg BMP2/2.5 μg L51P) did not promote fracture healing six and twelve weeks post-implantation. Moreover, new bone formation within the critical-size defect was directly linked to the removal of the βTCP-implant in all experimental groups. No evidence was found that long-term therapy with ALN impaired the resorption of the implanted graft. However, osteoclast transcriptome signature was elevated in sham and OVX animals upon treatment with BP, with transcript levels being higher at six weeks than at twelve weeks post-surgery. Furthermore, the transcriptome profile of the developing repair tissue confirmed an accelerated repair process in animals treated with 2.5 μg BMP2 implants. L51P did not increase the bioefficacy of BMP2 in the applied defect model. The present study provides evidence that continuous administration of BP does not inhibit implant resorption and does not alter the kinetics of the healing process of critical-size long bone defects. Furthermore, the BMP2 variant L51P did not enhance the bioefficacy of BMP2 when applied simultaneously to the femoral critical-size defect in sham and OVX mice.
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Affiliation(s)
- Franziska Strunz
- Bone & Joint Program, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Switzerland
| | - Saskia Gentil-Perret
- Bone & Joint Program, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Mark Siegrist
- Cardiovascular Diseases Program, Department for BioMedical Research, University of Bern, Bern, Switzerland
| | | | - Nikola Saulacic
- Bone & Joint Program, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Clinic for Cranio-Maxillofacial Surgery, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Willy Hofstetter
- Bone & Joint Program, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Clinic for Cranio-Maxillofacial Surgery, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
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Stapleton JR, Ard JD, Beavers DP, Cogdill LS, Fernandez AZ, Howard MJ, Justice JN, Lynch SD, Newman JJ, Weaver AA, Beavers KM. Strategies to reduce the onset of sleeve gastrectomy associated bone loss (STRONG BONES): Trial design and methods. Contemp Clin Trials Commun 2023; 34:101181. [PMID: 37456507 PMCID: PMC10344650 DOI: 10.1016/j.conctc.2023.101181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/05/2023] [Accepted: 07/02/2023] [Indexed: 07/18/2023] Open
Abstract
Background Despite recognized improvements in obesity-related comorbidities, mounting evidence implicates surgical weight loss in the onset of skeletal fragility. Sleeve gastrectomy (SG) is the most commonly performed bariatric procedure and is associated with 3-7% axial bone loss in the year following surgery. Bisphosphonates are FDA-approved medications for the prevention and treatment of age-related bone loss and may represent a strategy to reduce bone loss following SG surgery. Methods The Strategies to Reduce the Onset of Sleeve Gastrectomy Associated Bone Loss (STRONG BONES) trial (NCT04922333) is designed to definitively test whether monthly administration of the bisphosphonate, risedronate, for six months can effectively counter SG-associated bone loss. Approximately 120 middle-aged and older (≥40 years) SG patients will be randomized to six months of risedronate or placebo treatment, with skeletal outcomes assessed at baseline, six, and 12-months post-surgery. The primary outcome of the trial is 12-month change in total hip areal bone mineral density (aBMD), measured by dual energy x-ray absorptiometry (DXA). This will be complemented by DXA-acquired aBMD assessment at other skeletal sites and quantitative computed tomography (QCT) derived changes in bone quality. Change in muscle mass and function will also be assessed, as well as biomarkers of bone health, turnover, and crosstalk, providing mechanistic insight into intervention-related changes to the bone-muscle unit. Discussion Results from the STRONG BONES trial have the potential to influence current clinical practice by determining the ability of bisphosphonate use to mitigate bone loss and concomitant fracture risk in middle-aged and older SG patients.
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Affiliation(s)
- Joshua R. Stapleton
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Jamy D. Ard
- Weight Management Center, Atrium Health Wake Forest Baptist, Winston-Salem, NC, USA
- Department of Epidemiology and Prevention, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Daniel P. Beavers
- Department of Statistical Sciences, Wake Forest University, Winston-Salem, NC, USA
| | - Lori S. Cogdill
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA
| | - Adolfo Z. Fernandez
- Weight Management Center, Atrium Health Wake Forest Baptist, Winston-Salem, NC, USA
| | - Marjorie J. Howard
- Department of Biostatistics and Data Science, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Jamie N. Justice
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - S. Delanie Lynch
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Jovita J. Newman
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA
| | - Ashley A. Weaver
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Kristen M. Beavers
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA
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Pharmacological Interventions Targeting Pain in Fibrous Dysplasia/McCune-Albright Syndrome. Int J Mol Sci 2023; 24:ijms24032550. [PMID: 36768871 PMCID: PMC9916440 DOI: 10.3390/ijms24032550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/22/2023] [Accepted: 01/24/2023] [Indexed: 02/03/2023] Open
Abstract
Fibrous dysplasia (FD) is a rare, non-inherited bone disease occurring following a somatic gain-of-function R201 missense mutation of the guanine-nucleotide binding protein alpha subunit stimulating activity polypeptide 1 (GNAS) gene. The spectrum of the disease ranges from a single FD lesion to a combination with extraskeletal features; an amalgamation with café-au-lait skin hyperpigmentation, precocious puberty, and other endocrinopathies defines McCune-Albright Syndrome (MAS). Pain in FD/MAS represents one of the most prominent aspects of the disease and one of the most challenging to treat-an outcome driven by (i) the heterogeneous nature of FD/MAS, (ii) the variable presentation of pain phenotypes (i.e., craniofacial vs. musculoskeletal pain), (iii) a lack of studies probing pain mechanisms, and (iv) a lack of rigorously validated analgesic strategies in FD/MAS. At present, a range of pharmacotherapies are prescribed to patients with FD/MAS to mitigate skeletal disease activity, as well as pain. We analyze evidence guiding the current use of bisphosphonates, denosumab, and other therapies in FD/MAS, and also discuss the potential underlying pharmacological mechanisms by which pain relief may be achieved. Furthermore, we highlight the range of presentation of pain in individual cases of FD/MAS to further describe the difficulties associated with employing effective pain treatment in FD/MAS. Potential next steps toward identifying and validating effective pain treatments in FD/MAS are discussed, such as employing randomized control trials and probing new pain pathways in this rare bone disease.
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Anti-Osteoporotic Effects of n-trans-Hibiscusamide and Its Derivative Alleviate Ovariectomy-Induced Bone Loss in Mice by Regulating RANKL-Induced Signaling. Molecules 2021; 26:molecules26226820. [PMID: 34833909 PMCID: PMC8623072 DOI: 10.3390/molecules26226820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 11/17/2022] Open
Abstract
Osteoporosis is characterized by the deterioration of bone structures and decreased bone mass, leading to an increased risk of fracture. Estrogen deficiency in postmenopausal women and aging are major factors of osteoporosis and are some of the reasons for reduced quality of life. In this study, we investigated the effects of n-trans-hibiscusamide (NHA) and its derivative 4-O-(E)-feruloyl-N-(E)-hibiscusamide (HAD) on receptor activator of nuclear factor kappa-Β (NF-κB) ligand (RANKL)-induced osteoclast differentiation and an ovariectomized osteoporosis mouse model. NHA and HAD significantly inhibited the differentiation of osteoclasts from bone marrow-derived macrophages (BMMs) and the expression of osteoclast differentiation-related genes. At the molecular level, NHA and HAD significantly downregulated the phosphorylation of mitogen-activated protein kinase (MAPK) signaling molecules. However, Akt and NF-κB phosphorylation was inhibited only after NHA or HAD treatment. In the ovariectomy (OVX)-induced osteoporosis model, both NHA and HAD effectively improved trabecular bone structure. C-terminal telopeptide (CTX), a bone resorption marker, and RANKL, an osteoclast stimulation factor, were significantly reduced by NHA and HAD. The tartrate-resistant acid phosphatase (TRAP)-stained area, which indicates the osteoclast area, was also decreased by these compounds. These results show the potential of NHA and HAD as therapeutic agents for osteoporosis.
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Zhang R, Yang M, Li Y, Liu H, Ren M, Tao ZS. Effect of alendronate on the femoral metaphyseal defect under carbamazepine in ovariectomized rats. J Orthop Surg Res 2021; 16:14. [PMID: 33407695 PMCID: PMC7788868 DOI: 10.1186/s13018-020-02151-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 12/09/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The use of antiepileptic drugs and estrogen deficiency put forward higher requirements for bone defect regeneration. The present study investigated the effects of alendronate (ALN) on femoral bone defect in ovariectomized (OVX) rats under the influence of carbamazepine (CBZ). METHODS One hundred female SD rats at 3 months of age were either sham-operated or OVX and divided into four groups: sham control (CON); OVX control (OVX); ovariectomized rats treated with CBZ via gavage (75 mg/kg/day; CBZ); ovariectomized rats treated with CBZ plus ALN (2 mg/kg/day; CBZ-ALN). A critical-sized femoral metaphyseal bone defect was established in all female SD rats. Animals from the CBZ and CBZ-ALN groups received drugs by gavage the day after bone defect surgery was performed. After the rats were sacrificed, the defected area located in the distal femur was harvested for evaluation by microcomputed tomography (micro-CT), hematoxylin and eosin (HE) staining, and Masson's trichrome staining. The samples were also analyzed by biomechanics and immunohistochemical evaluation (IHC). Besides, biochemical analysis evaluates all serum samples. RESULTS The present study showed that ovariectomy changed the microstructural parameters of bone. The use of CBZ further decreased femur bone mass while treatment with ALN prevented bone loss. Compared to OVX and CBZ groups, CBZ-ALN group promoted bone neoformation and enhanced the ultimate load of the femur bone. However, the group of CBZ-ALN did not return to normal levels compared with the CON group. Besides, we noticed that CBZ-ALN group reduced tartrate-resistant acid phosphatase-5b (Tracp-5b) expression and had no significant effect on the expression of osteocalcin (OCN) and type I collagen (Col-I) in IHC compared with CBZ group. Biochemical analysis results presented that systemic delivery of CBZ showed pernicious effects on bone formation and resorption in ovariectomized rats, with the worse effects on C-terminal crosslinked telopeptide of type I collagen (CTX-1). Besides, a significant decrease in CTX-1 levels was observed in CBZ-ALN group as compared to the group of CBZ. CONCLUSION These results demonstrated that ALN can effectively reverse the effects of CBZ on the microarchitectural properties of bone, and thus can have a positive effect on local bone neoformation in rats with osteoporosis. CLINICAL RELEVANCE The dose of 2 mg/kg ALN improves the negative effect of prescription of CBZ at 75 mg/kg and promotes bone neoformation of femoral bony deficits.
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Affiliation(s)
- Ruotian Zhang
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China
| | - Min Yang
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China.
| | - Yang Li
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China
| | - Hedong Liu
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China
| | - Maoxian Ren
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China
| | - Zhou-Shan Tao
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China
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Kim MH, Lee H, Ha IJ, Yang WM. Zanthoxylum piperitum alleviates the bone loss in osteoporosis via inhibition of RANKL-induced c-fos/NFATc1/NF-κB pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 80:153397. [PMID: 33130475 DOI: 10.1016/j.phymed.2020.153397] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/29/2020] [Accepted: 10/22/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND The fruit of Zanthoxylum piperitum (ZP) is an herbal medicine as well as a spice agent in Asia to treat carminative, stomachic, anthelmintic and degenerative diseases. Z. piperitum was reported to have anti-oxidant, anti-inflammatory, anti-osteoarthritic and osteosarcoma proliferation-control effects. PURPOSE AND STUDY DESIGN This study was conducted to determine the anti-osteoporotic effects and mechanisms of action of ZP. METHODS Female ICR mice underwent ovariectomies (OVX) and were orally administered ZP at 1, 10 and 100 mg/kg for 6 weeks. The femoral and tibial bones were assessed by dual-energy X-ray absorptiometry and histology to analyze the bone mineral density (BMD) and the number of osteoclasts. Raw 264.7 cells were stimulated by 100 ng/ml receptor activator of nuclear factor-κB ligand (RANKL) for 7 days in the presence of ZP. RANKL-induced signaling molecules were analyzed in osteoclasts. RESULTS The levels of femoral and tibial BMD were significantly increased by ZP administration. Serum biomarkers such as osteocalcin, calcium, alkaline phosphatase and bone-specific alkaline phosphatase concentrations were markedly recovered to normal levels in ZP-treated osteoporotic mice. In addition, the number of osteoclasts in the head, trochanter and body of the femur was obviously decreased in the ZP treatment groups. Moreover, ZP treated-cells showed a reduction in the number of TRAP-positive multinuclear cells in RANKL-stimulated Raw 264.7 cells. ZP decreased the RANKL-activated NFATc1 and c-fos, transcription factors of osteoclast formation. The nuclear translocation of NF-κB and phosphorylation of ERK42/44 were inhibited by the ZP treatment in RANKL-induced osteoclasts. CONCLUSION Collectively, ZP exerts its inhibitory effect against bone resorption by regulating RANKL-mediated c-fos/NFATc1/NF-κB in osteoclast. ZP may prove to be a therapeutic agent for osteoporosis.
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Affiliation(s)
- Mi Hye Kim
- Department of Convergence Korean Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Haesu Lee
- Department of Convergence Korean Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - In Jin Ha
- Korean Medicine Clinical Trial Center, Kyung Hee University Korean Medicine Hospital, Kyung Hee University, Seoul, South Korea
| | - Woong Mo Yang
- Department of Convergence Korean Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea.
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Kong L, Zuo K, Ma L. Clinical effect of Zoledronic Acid in the treatment of Senile Osteoporosis. Pak J Med Sci 2020; 36:1703-1707. [PMID: 33235601 PMCID: PMC7674899 DOI: 10.12669/pjms.36.7.1964] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Objective: To investigate the clinical efficacy of zoledronic acid in the treatment of senile osteoporosis. Methods: One hundred and six cases of senile osteoporosis who visited to our hospital from August 2017 to December 2018 for treatment were selected and randomly divided into a control group and an observation group. The control group was treated with conventional therapy, while the observation group was treated with zoledronic acid in addition to the treatment of the control group. Bone mineral density, pain degree, therapeutic effect and adverse reactions of the two groups were compared. Results: The total effective rate of the observation group was 96.67%, higher than 80.00% of the control group (P<0.05); the bone mineral density of lumbar vertebrae, femoral neck and Ward’ area in the two groups increased after 6 months of treatment, and the bone mineral density of the observation group increased more than that of the control group (P<0.05); the pain degree of the observation group was lower than that of the control group after 6 months of treatment, and the difference was significant (P<0.05). There was no significant difference in the occurrence of adverse reactions between the two groups (P>0.05). Conclusion: Zoledronic acid is helpful to alleviate clinical symptoms, reduce the degree of bone pain, and promote the increase of bone mass, and has high safety in the treatment of senile osteoporosis, which is worth promotion.
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Affiliation(s)
- Li Kong
- Li Kong, Pharmacy Intravenous Admixture Services, Binzhou People's Hospital, Shandong 256610, P. R. China
| | - Kai Zuo
- Kai Zuo, Department of Infectious Diseases, Binzhou People's Hospital, Shandong 256610, P. R. China
| | - Long Ma
- Long Ma, Department of Emergency Station, Binzhou People's Hospital, Shandong 256610, P. R. China
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Casado-Díaz A, Dorado G, Giner M, Montoya MJ, Navarro-Valverde C, Díez-Pérez A, Quesada-Gómez JM. Proof of Concept on Functionality Improvement of Mesenchymal Stem-Cells, in Postmenopausal Osteoporotic Women Treated with Teriparatide (PTH1-34), After Suffering Atypical Fractures. Calcif Tissue Int 2019; 104:631-640. [PMID: 30725167 DOI: 10.1007/s00223-019-00533-0] [Citation(s) in RCA: 4] [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: 09/25/2018] [Accepted: 01/30/2019] [Indexed: 12/30/2022]
Abstract
Osteoporosis long-term treatment with nitrogen-containing bisphosphonates, has been associated with uncommon adverse effects, as atypical femoral fractures (AFF). Thus, treatment with teriparatide (TPTD; fragment of human parathyroid hormone; PTH1-34) has been proposed for such patients. Besides its anabolizing effect on bone, TPTD may affect stem-cell mobilization and expansion. Bone marrow mononuclear cells (BMMNC) were isolated from five women that had suffered AFF associated to bisphosphonate treatment, before and after 6 months of TPTD therapy. The presence of mesenchymal stromal cells (CD73, CD90 and CD105 positive cells), gene expression of NANOG, SOX2 and OCT4, proliferation, senescence and capacity to differentiate into osteoblasts and adipocytes were analyzed. After TPTD treatment, BMMNC positive cells for CD73, CD90 and CD105 increased from 6.5 to 37.5% (p < 0.05); NANOG, SOX2 and OCT4 were upregulated, being statistically significant for NANOG (p < 0.05), and cells increased proliferative capacity more than 50% at day 7 (p < 0.05). Senescence was reduced 2.5-fold (p < 0.05), increasing differentiation capacity into osteoblasts and adipocytes, with more than twice mineralization capacity of extracellular matrix or fat-droplet formation (p < 0.05), respectively. Results show that TPTD treatment caused BMMNC "rejuvenation", increasing the number of cells in a more undifferentiated stage, with higher differentiation potency. This effect may favor TPTD anabolic action on bone in such patients with AFF, increasing osteoblast precursor cells. Such response could also arise in other osteoporotic patients treated with TPTD, without previous AFF. Furthermore, our data suggest that TPTD effect on stromal cells may have clinical implications for bone-regenerative medicine. Further studies may deepen on this potential.
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Affiliation(s)
- Antonio Casado-Díaz
- Unidad de Gestión Clínica de Endocrinología y Nutrición, CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Hospital Universitario Reina Sofía, RETICEF, 14004, Córdoba, Spain
| | - Gabriel Dorado
- Dep. Bioquímica y Biología Molecular, Campus Rabanales C6-1-E17, Campus de Excelencia Internacional Agroalimentario (ceiA3), Universidad de Córdoba, RETICEF CIBERFES, 14071, Córdoba, Spain
| | - Mercè Giner
- Dep. de Medicina Interna, Dept. de Histología y Citología Normal y Patológica, Escuela de Medicina, Unidad de Metabolismo óseo, Hospital Universitario Virgen Macarena, Universidad de Sevilla, RETICEF, 41009, Seville, Spain
| | - María José Montoya
- Dept. de Medicina, Escuela de Medicina, Universidad de Sevilla, RETICEF, 41009, Seville, Spain
| | - Cristina Navarro-Valverde
- Unidad de Gestión Clínica de Cardiología, Hospital Universitario Virgen de Valme, 41014, Seville, Spain
| | - Adolfo Díez-Pérez
- Instituto Hospital del Mar de Investigaciones Médicas (IMIM), Universitat Autònoma de Barcelona, RETICEF, CIBERFES, 08003, Barcelona, Spain
| | - José Manuel Quesada-Gómez
- Unidad de Gestión Clínica de Endocrinología y Nutrición, CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Hospital Universitario Reina Sofía, RETICEF, 14004, Córdoba, Spain.
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Fatoye F, Smith P, Gebrye T, Yeowell G. Real-world persistence and adherence with oral bisphosphonates for osteoporosis: a systematic review. BMJ Open 2019; 9:e027049. [PMID: 30987990 PMCID: PMC6500256 DOI: 10.1136/bmjopen-2018-027049] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVES This study examined patient adherence and persistence to oral bisphosphonates for the treatment of osteoporosis in real-world settings. METHODS A systematic review was completed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Medical Literature Analysis and Retrieval System Online (MEDLINE), Cumulative Index to Nursing and Allied Health Literature (CINAHL), Allied and Complementary Medicine Database (AMED), Database of Abstracts of Reviews of Effects (DARE), Health Technology Assessment (HTA) and National Health Service Economic Evaluation Database NHS EED) databases were searched for studies published in English language up to April 2018. Prospective and retrospective observational studies that used prescription claim databases or hospital medical records to examine patient adherence and persistence to oral bisphosphonate treatment among adults with osteoporosis were included. The Newcastle-Ottawa quality assessment scale (NOS) was used to assess the quality of included studies. RESULTS The search yielded 540 published studies, of which 89 were deemed relevant and were included in this review. The mean age of patients included within the studies ranged between 53 to 80.8 years, and the follow-up varied from 3 months to 14 years. The mean persistence of oral bisphosphonates for 6 months, 1 year and 2 years ranged from 34.8% to 71.3%, 17.7% to 74.8% and 12.9% to 72.0%, respectively. The mean medication possession ratio ranged from 28.2% to 84.5%, 23% to 50%, 27.2% to 46% over 1 year, 2 years and 3 years, respectively. All studies included scored between 6 to 8 out of 9 on the NOS. The determinants of adherence and persistence to oral bisphosphonates included geographic residence, marital status, tobacco use, educational status, income, hospitalisation, medication type and dosing frequency. CONCLUSIONS While a number of studies reported high levels of persistence and adherence, the findings of this review suggest that patient persistence and adherence with oral bisphosphonates medications was poor and reduced notably over time. Overall, adherence was suboptimal. To maximise adherence and persistence to oral bisphosphonates, it is important to consider possible determinants, including characteristics of the patients.
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Affiliation(s)
- F Fatoye
- Department of Health Professions, Manchester Metropolitan University, Manchester, UK
| | - P Smith
- Department of Health Professions, Manchester Metropolitan University, Manchester, UK
| | - T Gebrye
- Department of Health Professions, Manchester Metropolitan University, Manchester, UK
| | - G Yeowell
- Department of Health Professions, Manchester Metropolitan University, Manchester, UK
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Wang T, Sun CH, Zhong HB, Gong Y, Cui ZK, Xie J, Wang YP, Liang C, Cao HH, Chen XR, Zou ZP, Li SF, Bai XC. N-(3-methoxybenzyl)-(9Z,12Z,15Z)-octadecatrienamide promotes bone formation via the canonical Wnt/β-catenin signaling pathway. Phytother Res 2019; 33:1074-1083. [PMID: 30768733 DOI: 10.1002/ptr.6301] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 12/14/2018] [Accepted: 01/10/2019] [Indexed: 11/07/2022]
Abstract
Osteoporosis is characterized by low bone mineral density and microarchitectural deterioration of bone tissue. N-(3-methoxybenzyl)-(9Z,12Z,15Z)-octadecatrienamide (MBOC) is one of the macamides isolated from Maca (Lepidium meyenii Walp.), a cruciferous plant from the Andes of Peru. In this study, C3H/10T1/2 mesenchymal stem cells were treated with MBOC in osteogenic induction medium. An ovariectomized (OVX) mouse model was used to investigate the effect of 1-month MBOC treatment on the prevention of postmenopausal osteoporosis. Remarkably, trabecular thickness, trabecular number, and bone volume/tissue volume of the distal femoral metaphysis were significantly increased in OVX + MBOC mice compared with OVX mice, as revealed by microcomputed tomography analysis. Trabecular separation was decreased in OVX + MBOC mice compared with OVX mice. Consistently, MBOC increased the levels of osteocalcin and runt-related transcription factor 2 in OVX mice, as well as the expression of runt-related transcription factor 2, osterix, and alkaline phosphatase in C3H/10T1/2 cells. Mechanistically, MBOC activates the canonical Wnt/β-catenin signaling pathway via inhibiting phosphorylation of GSK-3β at Tyr216 and maintaining β-catenin expression. Collectively, the current study demonstrates the robustness of MBOC in the induction of mesenchymal stem cells osteogenic differentiation and consequent bone formation, suggesting that MBOC may be a potentially effective drug to treat postmenopausal osteoporosis.
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Affiliation(s)
- Ting Wang
- Key Laboratory of Mental Health of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Chun-Han Sun
- Department of Orthopedics, Huizhou First People's Hospital, Huizhou, Guangdong, China
| | - Hao-Bo Zhong
- Department of Orthopedics, Huizhou First People's Hospital, Huizhou, Guangdong, China
| | - Yan Gong
- Key Laboratory of Mental Health of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhong-Kai Cui
- Key Laboratory of Mental Health of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Jing Xie
- Key Laboratory of Mental Health of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Yan-Peng Wang
- Key Laboratory of Mental Health of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Chuang Liang
- Key Laboratory of Mental Health of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - He-He Cao
- Key Laboratory of Mental Health of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiao-Rui Chen
- Key Laboratory of Mental Health of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhi-Peng Zou
- Key Laboratory of Mental Health of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Sheng-Fa Li
- Department of Orthopedics, Huizhou First People's Hospital, Huizhou, Guangdong, China
| | - Xiao-Chun Bai
- Key Laboratory of Mental Health of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degenerative Diseases, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
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11
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Oteri G, Trifirò G, Peditto M, Lo Presti L, Marcianò I, Giorgianni F, Sultana J, Marcianò A. Treatment of Medication-Related Osteonecrosis of the Jaw and its Impact on a Patient's Quality of Life: A Single-Center, 10-Year Experience from Southern Italy. Drug Saf 2018; 41:111-123. [PMID: 28766109 DOI: 10.1007/s40264-017-0582-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
INTRODUCTION No official guidelines are available for the management of medication-related osteonecrosis of the jaw (MR-ONJ). The additional benefit of surgery after pharmacological treatment is debated by both clinicians and patients. OBJECTIVE The aim of this study was to evaluate the changes in patients' MR-ONJ-related quality of life (QoL) after pharmacological treatment with or without surgery in a large cohort affected by MR-ONJ. METHODS Anonymized data on patients diagnosed with MR-ONJ were extracted from the database of the Osteonecrosis of the Jaw Treatment Center (University of Messina, Italy) in the years 2005-2015. QoL was evaluated at the moment of MR-ONJ diagnoses (T0), after pharmacological treatment with or without surgery (T1 and T2, respectively), based on scores from the European Organisation for Research and Treatment of Cancer (EORTC) QOL Module for Head and Neck Cancer (global oral health status [GOHS]) and a visual analog scale (VAS), stratified by indication for use. RESULTS Among 100 patients, 36% were affected by osteoporosis (OSTEO group) and 64% were affected by cancer (ONC group). Considering T0, QoL scores were higher in the OSTEO group then in the ONC group. At T1, GOHS and VAS increased in both groups (OSTEO group: +9.9% and +39.9%; ONC group: +35.4 and +97.2%, respectively). Pharmacological treatment was effective in reducing pain (OSTEO group: -22.0%; ONC group: -44.8%), and social contact troubles (OSTEO group: -40.3%; ONC group: -26.7%). At T2, GOHS and VAS further increased. Scores related to 'pain' and the troubles related to the 'social dimension' also decreased (OSTEO group: -91.3% and -72.0%; ONC group: 50.8% and -16.4%, respectively). CONCLUSIONS MR-ONJ-related QoL increased after pharmacological treatment and, more notably, after surgery, which may offer benefits to selected patients. QoL data may help clinicians in promoting tailored management of MR-ONJ.
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Affiliation(s)
- Giacomo Oteri
- Unit of Dentistry, AOU Policlinico "G.Martino", Messina, Italy.,Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Via Consolare Valeria, 98125, Messina, Italy
| | - Gianluca Trifirò
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Via Consolare Valeria, 98125, Messina, Italy. .,Unit of Clinical Pharmacology, AOU Policlinico "G. Martino", Messina, Italy. .,Department of Medical Informatics, Erasmus Medical Centre, Rotterdam, The Netherlands.
| | - Matteo Peditto
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Via Consolare Valeria, 98125, Messina, Italy
| | | | - Ilaria Marcianò
- Unit of Clinical Pharmacology, AOU Policlinico "G. Martino", Messina, Italy
| | | | - Janet Sultana
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Via Consolare Valeria, 98125, Messina, Italy.,Department of Medical Informatics, Erasmus Medical Centre, Rotterdam, The Netherlands
| | - Antonia Marcianò
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Via Consolare Valeria, 98125, Messina, Italy
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Oral-Health-Related Quality of Life After Surgical Treatment of Osteonecrosis of the Jaws. J Craniofac Surg 2018; 29:403-408. [PMID: 29135723 DOI: 10.1097/scs.0000000000004087] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The aim of this study is to analyze the clinical outcome and the change in oral-health-related quality of life (QoL) of osteoporotic patients affected by medication-related osteonecrosis of the jaws (MRONJ). Forty-one patients, consecutively treated for a 10-year period, were retrospectively analyzed. All the patients underwent a marginal osseous resective jaw surgery. A clinical 12 months postoperative evaluation has been performed and the complete mucosal healing, the absence of swelling and suppuration, and no signs of disease recurrence were defined like success parameters. Quality-of-life surveys tests like EORTC QQ-C30 and QLQ-HN35 appendices in conjunction with a perceived oral health visual analog scale (VAS) were administered before (time of diagnosis of MRONJ) and after surgery (at least 6 months) in order to record the different oral health status of the treated patients. The majority of MRONJ-diagnosed patients complained symptoms like pain, eating discomfort, and sense problems, with occasional involvement of the social dimension. There was a prevalence of troubles with social eating and social contact.The complete mucosal healing was achieved in 100% of the patients and the administered survey tests reported a significant improvement in all the investigated spheres. Similarly, an increased mean score of perceived oral health VAS was reported.Marginal-resective surgery of the necrotic jaw bone can be an effective treatment of osteoporotic patients affected by localized MRONJ. Quality-of-life parameters are demonstrated to be useful for recording the patient-centered outcome of MRONJ treatment.
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13
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Wright NC, Foster PJ, Mudano AS, Melnick JA, Lewiecki EM, Shergy WJ, Curtis JR, Cutter GR, Danila MI, Kilgore ML, Lewis EC, Morgan SL, Redden DT, Warriner AH, Saag KG. Assessing the feasibility of the Effectiveness of Discontinuing Bisphosphonates trial: a pilot study. Osteoporos Int 2017; 28:2495-2503. [PMID: 28540506 PMCID: PMC5734645 DOI: 10.1007/s00198-017-4073-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 05/01/2017] [Indexed: 10/19/2022]
Abstract
UNLABELLED The Effectiveness of Discontinuing Bisphosphonates (EDGE) study is a planned pragmatic clinical trial to guide "drug holiday" clinical decision making. This pilot study assessed work flow and feasibility of such a study. While participant recruitment and treatment adherence were suboptimal, administrative procedures were generally feasible and minimally disrupted clinic flow. INTRODUCTION The comparative effectiveness of continuing or discontinuing long-term alendronate (ALN) on fractures is unknown. A large pragmatic ALN discontinuation study has potential to answer this question. METHODS We conducted a 6-month pilot study of the planned the EDGE study among current long-term ALN users (women aged ≥65 with ≥3 years of ALN use) to determine study work flow and feasibility including evaluating the administrative aspects of trial conduct (e.g., time to contract, institutional review board (IRB) approval), assessing rates of site and participant recruitment, and evaluating post-randomization outcomes, including adherence, bisphosphonate-associated adverse events, and participant and site satisfaction. We assessed outcomes 1 and 6 months after randomization. RESULTS Nine sites participated, including seven community-based medical practices and two academic medical centers. On average (SD), contract execution took 3.4 (2.3) months and IRB approval took 13.9 (4.1) days. Sites recruited 27 participants (13 to continue ALN and 14 to discontinue ALN). Over follow-up, 22% of participants did not adhere to their randomization assignment: 30.8% in the continuation arm and 14.3% in the discontinuation arm. No fractures or adverse events were reported. Sites reported no issues regarding work flow, and participants were highly satisfied with the study. CONCLUSIONS Administrative procedures of the EDGE study were generally feasible, with minimal disruption to clinic flow. In this convenience sample, participant recruitment was suboptimal across most practice sites. Accounting for low treatment arm adherence, a comprehensive recruitment approach will be needed to effectively achieve the scientific goals of the EDGE study.
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Affiliation(s)
- N C Wright
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA.
| | - P J Foster
- Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - A S Mudano
- Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - J A Melnick
- Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - E M Lewiecki
- New Mexico Clinical Research and Osteoporosis Center, Albuquerque, NM, USA
| | - W J Shergy
- Rheumatology Associates of North Alabama, Huntsville, AL, USA
| | - J R Curtis
- Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - G R Cutter
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - M I Danila
- Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - M L Kilgore
- Deparment of Health Care Organization and Policy, University of Alabama at Birmingham, Birmingham, AL, USA
| | - E C Lewis
- Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - S L Morgan
- Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - D T Redden
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - A H Warriner
- Division of Endocrinology, Diabetes and Metabolism, University of Alabama at Birmingham, Birmingham, AL, USA
| | - K G Saag
- Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
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Conservative surgical management of patients with bisphosphonate-related osteonecrosis of the jaws: a series of 120 patients. Br J Oral Maxillofac Surg 2016; 54:930-935. [DOI: 10.1016/j.bjoms.2016.06.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 06/17/2016] [Indexed: 11/23/2022]
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15
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Carli A, Albers A, Séguin C, Harvey EJ. The Medical and Surgical Treatment of ARCO Stage-I and II Osteonecrosis of the Femoral Head: A Critical Analysis Review. JBJS Rev 2016; 2:01874474-201402000-00002. [PMID: 27490931 DOI: 10.2106/jbjs.rvw.m.00066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Alberto Carli
- McGill University Health Center, Shriners Hospital for Children, 1529 Cedar Avenue, Montreal, Quebec, Canada H3G 1A6
| | - Anthony Albers
- McGill University Health Center, Shriners Hospital for Children, 1529 Cedar Avenue, Montreal, Quebec, Canada H3G 1A6
| | - Chantal Séguin
- McGill University Health Center, Department of Hematology and Oncology, Montreal General Hospital B7, 1650 Cedar Avenue, Montreal, Quebec, Canada H3G 1A4
| | - Edward J Harvey
- McGill University Health Center, Montreal General Hospital B5, 1650 Cedar Avenue, Montreal, Quebec, Canada H3G 1A4
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Abstract
Osteoporosis is a degenerative bone disease commonly related to aging. With an increase in life expectancies worldwide, the prevalence of the disease is expected to rise. Current clinical therapeutic treatments are not able to offer long-term solutions to counter the bone mass loss and the increased risk of fractures, which are the primary characteristics of the disease. However, the combination of bioactive nanomaterials within a biomaterial scaffold shows promise for the development of a localized, long-term treatment for those affected by osteoporosis. This review summarizes the unique characteristics of engineered nanoparticles that render them applicable for bone regeneration and recaps the current body of knowledge on nanomaterials with potential for osteoporosis treatment and bone regeneration. Specifically, we highlight new developments that are shaping this emerging field and evaluate applications of recently developed nanomaterials for osteoporosis treatment. Finally, we will identify promising new research directions in nanotechnology for bone regeneration.
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Affiliation(s)
- Mikayla Barry
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77841, USA
| | - Hannah Pearce
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77841, USA
| | - Lauren Cross
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77841, USA
| | - Marco Tatullo
- Maxillofacial Unit, Calabrodental Clinic, Crotone, 88900, Italy
- Regenerative Medicine Section, Tecnologica Research Institute, Crotone, 88900, Italy
| | - Akhilesh K Gaharwar
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77841, USA.
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77841, USA.
- Center for Remote Health Technologies and Systems, Texas A&M University, College Station, TX, 77843, USA.
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17
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Gu T, Eisenberg Lawrence DF, Stephenson JJ, Yu J. Physicians' perspectives on the treatment of osteoporosis patients with bisphosphonates. Clin Interv Aging 2016; 11:1-8. [PMID: 26929609 PMCID: PMC4760663 DOI: 10.2147/cia.s97593] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Noncompliance with bisphosphonate therapy among osteoporosis patients attenuates the reduction of fracture risk. The objective of this study was to assess physicians' prescribing considerations, preferences for osteoporosis treatments, and perceptions of patients' compliance with oral bisphosphonates. METHODS This was an online survey of US physicians identified in the HealthCore Integrated Research Database (HIRD(SM)) as prescribing oral bisphosphonates to women aged ≥55 years. The survey gauged physicians' prescribing considerations and preferences for various types of osteoporosis medications. The physicians were asked to predict patient persistence and compliance, and rate various reasons for noncompliance. RESULTS Bone mineral density, long-term medication use (eg, corticosteroids), and a history of fracture were ranked as major considerations by 94.9%, 88.6%, and 86.7% of participating physicians (N=158), respectively, when deciding whether to treat an osteoporosis patient. Most physicians expressed a preference for prescribing weekly or monthly oral bisphosphonates, for both newly diagnosed patients (54.4% and 34.2%, respectively) and long-term users of oral bisphosphonates (40.5% and 36.1%, respectively). Most physicians (23.4% always, 58.9% sometimes) incorporated a drug holiday into their prescribing patterns. Although most physicians predicted that more than half of the patients would comply with the prescribed medication for at least a year, 17.7% predicted that less than half of the patients would be compliant in the 1st year, and 29.7% predicted the same result for compliance beyond 1 year. In the opinion of the majority of physicians, the major reasons for noncompliance with oral bisphosphonates were intolerance of a medication due to a gastrointestinal condition (71.5%) and medication side effects (69.6%). CONCLUSION US physicians consider several relevant risk factors when deciding whether to prescribe pharmacotherapy and exhibit a preference for weekly or monthly regimens. The physicians estimated a substantial minority of the patients to be noncompliant with oral bisphosphonates, for reasons including primarily gastrointestinal intolerance and medication-related side effects.
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Affiliation(s)
- Tao Gu
- HealthCore, Wilmington, DE, USA
| | | | | | - Jingbo Yu
- Merck & Co., Inc., Kenilworth, NJ, USA
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18
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Riaz H, Godman B, Hussain S, Malik F, Mahmood S, Shami A, Bashir S. Prescribing of bisphosphonates and antibiotics in Pakistan: challenges and opportunities for the future. JOURNAL OF PHARMACEUTICAL HEALTH SERVICES RESEARCH 2015. [DOI: 10.1111/jphs.12091] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Humayun Riaz
- Faculty of Pharmacy; Sargodha University; Sargodha Pakistan
| | - Brian Godman
- Department of Laboratory Medicine; Division of Clinical Pharmacology; Karolinska Institute; Karolinska University Hospital Huddinge; Stockholm Sweden
- Strathclyde Institute of Pharmacy and Biomedical Sciences; Strathclyde University; Glasgow UK
| | - Shahzad Hussain
- Drugs Control and Traditional Medicines Division; National Institute of Health; Islamabad Pakistan
| | - Farnaz Malik
- Drugs Control and Traditional Medicines Division; National Institute of Health; Islamabad Pakistan
| | - Sidra Mahmood
- Department of Pharmacy; Quaid e Azam University; Islamabad Pakistan
| | - Ali Shami
- Orthopaedic Department; Pakistan Institute of Medical Sciences; Islamabad Pakistan
| | - Sajid Bashir
- Faculty of Pharmacy; Sargodha University; Sargodha Pakistan
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19
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Kim SM, Rhee W, Ha S, Lim JH, Jang IT. Influence of alendronate and endplate degeneration to single level posterior lumbar spinal interbody fusion. KOREAN JOURNAL OF SPINE 2014; 11:221-6. [PMID: 25620981 PMCID: PMC4303280 DOI: 10.14245/kjs.2014.11.4.221] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 11/21/2014] [Accepted: 11/24/2014] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Using alendronate after spinal fusion is a controversial issue due to the inhibition of osteoclast mediated bone resorption. In addition, there are an increasing number of reports that the endplate degeneration influences the lumbar spinal fusion. The object of this retrospective controlled study was to evaluate how the endplate degeneration and the bisphosphonate medication influence the spinal fusion through radiographic evaluation. METHODS In this study, 44 patients who underwent single-level posterior lumbar interbody fusion (PLIF) using cage were examined from April 2007 to March 2009. All patients had been diagnosed as osteoporosis and would be recommended for alendronate medication. Endplate degeneration is categorized by the Modic changes. The solid fusion is defined if there was bridging bone between the vertebral bodies, either within or external to the cage on the plain X-ray and if there is less than 5° of angular difference in dynamic X-ray. RESULTS In alendronate group, fusion was achieved in 66.7% compared to 73.9% in control group (no medication). Alendronate did not influence the fusion rate of PLIF. However, there was the statistical difference of fusion rate between the endplate degeneration group and the group without endplate degeneration. A total of 52.4% of fusion rate was seen in the endplate degeneration group compared to 91.3% in the group without endplate degeneration. The endplate degeneration suppresses the fusion process of PLIF. CONCLUSION Alendronate does not influence the fusion process in osteoporotic patients. The endplate degeneration decreases the fusion rate.
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Affiliation(s)
- Sang-Mok Kim
- Department of Neurosurgery, Seoul Nanoori Hospital, Seoul, Korea
| | - Wootack Rhee
- Department of Neurosurgery, Seoul Nanoori Hospital, Seoul, Korea
| | - Seongil Ha
- Department of Neurosurgery, Seoul Nanoori Hospital, Seoul, Korea
| | - Jae Hyeon Lim
- Department of Neurosurgery, Seoul Nanoori Hospital, Seoul, Korea
| | - Il Tae Jang
- Department of Neurosurgery, Seoul Nanoori Hospital, Seoul, Korea
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20
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Piazzetta G, Baracho FR, Oliveira LD, Santos GR, Kulak CAM, Borba VZC. [Clinical heterogeneity of atypical fractures during prolonged use of bisphosphonates--risk factors and bone turnover markers]. ARQUIVOS BRASILEIROS DE ENDOCRINOLOGIA E METABOLOGIA 2014; 58:855-61. [PMID: 25465610 DOI: 10.1590/0004-2730000003229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 03/21/2014] [Indexed: 11/22/2022]
Abstract
We describe four cases of atypical femoral fractures treated at the Department of Endocrinology, Hospital de Clínicas, Federal University of Paraná (SEMPR) which, although characteristic of this type of fracture, presented clinical peculiarities that should be considered and serve as a warning in these patients, such as: late diagnosis with maintenance of bisphosphonates; absence of co-morbidities with excellent result; failure of fracture healing; use of anabolic medication after the fracture and the use of bone turnover markers at the follow up.
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Affiliation(s)
- Giovana Piazzetta
- Departamento de Clínica Médica do Hospital de Clínicas, UFPR, Curitiba, PR, Brasil
| | - Filipe R Baracho
- Departamento de Ortopedia e Traumatologia do Hospital de Clínicas, UFPR, Curitiba, PR, Brasil
| | - Larissa de Oliveira
- Departamento de Clínica Médica do Hospital de Clínicas, UFPR, Curitiba, PR, Brasil
| | - Gustavo R Santos
- Departamento de Clínica Médica do Hospital de Clínicas, UFPR, Curitiba, PR, Brasil
| | - Carolina A M Kulak
- Departamento de Clínica Médica do Hospital de Clínicas, UFPR, Curitiba, PR, Brasil
| | - Victória Z C Borba
- Departamento de Clínica Médica do Hospital de Clínicas, UFPR, Curitiba, PR, Brasil
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Abstract
Bisphosphonates are the cornerstone of treatment for osteoporosis. These agents are generally safe and well-tolerated, but concerns have emerged about adverse effects related to long-term use, namely osteonecrosis of the jaw and atypical femur fractures. For most patients at moderate or high risk of fracture, the benefits of treatment far outweigh these serious but rare risks. Bisphosphonates accumulate in bone with some persistent protective effect after therapy is stopped, making it is reasonable to consider a "drug holiday." The duration of therapy and the length of the holiday should be based on clinical judgment.
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22
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Song YK, Kim JM, Park SJ, Lee SK. Increase in the serum parathyroid hormone level during a bisphosphonate drug holiday. J Bone Metab 2014; 21:217-22. [PMID: 25247160 PMCID: PMC4170085 DOI: 10.11005/jbm.2014.21.3.217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/12/2014] [Accepted: 06/16/2014] [Indexed: 11/27/2022] Open
Abstract
After discontinuation of bisphosphonate therapy, an antiresorptive effect and antifracture protection persist for an undefined period. Patients are encouraged to continue calcium and vitamin D supplementation, during a bisphosphonate drug holiday. However, assessment of adequate calcium intake during the bisphosphonate drug holiday is difficult. Therefore, we measured the serum intact parathyroid hormone (PTH) level as a surrogate marker. A premenopausal woman discontinued bisphosphonate therapy, after 7.5 years of treatment. Two months later, blood calcium and phosphorus levels were normal, serum 25-hydroxyvitamin D level was 31.3 ng/mL, but serum PTH level had increased to 94.9 pg/mL. The elemental calcium supplement dose was increased to 600 mg/day, with no change in the cholecalciferol dose (400 IU). Her serum PTH levels decreased to 49.1 after 4 months and 32.9 pg/mL after 5 months. The serum PTH level may be helpful in assessing adequate calcium intake during a bisphosphonate drug holiday.
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Affiliation(s)
- Yoon Kyung Song
- Department of Internal Medicine, Nowon Eulji Hospital, Seoul, Korea
| | - Jeong Min Kim
- Department of Internal Medicine, Nowon Eulji Hospital, Seoul, Korea
| | - Sun Jin Park
- Department of Internal Medicine, Nowon Eulji Hospital, Seoul, Korea
| | - Seong-Kyu Lee
- Department of Internal Medicine, Eulji University Hospital, Daejeon, Korea. ; Department of Biochemistry-Molecular Biology, School of Medicine, Eulji University, Daejeon, Korea
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Yoo JW, Kim S, Kim SJ, Ryu WS, Min TJ, Shin HP, Kim K, Choi JB, Nakagawa S. Effects of health insurance on racial disparity in osteoporosis medication adherence. J Am Pharm Assoc (2003) 2014; 53:626-31. [PMID: 24141382 DOI: 10.1331/japha.2013.13061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To explore whether racial disparity in osteoporosis drug therapy maintenance varies by health insurance coverage status. DESIGN Longitudinal observation study. SETTING Cleveland Clinic Health System (Cleveland, OH) from January 2006 to December 2009. PATIENTS 3,901 black and white female Medicare beneficiaries starting osteoporosis drug therapy. INTERVENTION Analysis of the health system's integrated electronic medical records. MAIN OUTCOME MEASURES Drug therapy adherence (medication possession ratio ≥80%) for more than 12 of 15 surveillance units and occurrence of extended nonadherence gaps for at least two surveillance units in a row. RESULTS Among patients with supplementary health insurance (n = 2,278), no difference was observed for drug therapy adherence ( P = 0.17) and extended nonadherence gaps ( P = 0.53) between black and white participants. When patients did not have supplementary health insurance (n = 1,623), blacks (36% [95% CI 28-47]) were less likely to adhere to drug therapy than whites (47% [38-57]; odds ratio [OR] 0.34 [95% CI 0.09-0.92], P = 0.004). Blacks (25% [19-32]) also were more likely to have an extended nonadherence gap episode than whites (18% [11-26]; OR 2.42 [1.13-3.50], P = 0.03). CONCLUSION Similar to previous research on racial disparity in health services, racial disparity in osteoporosis drug therapy maintenance between black and white female older patients existed when supplementary health insurance was not affordable.
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Donnelly E, Lane JM, Boskey AL. Research perspectives: The 2013 AAOS/ORS research symposium on Bone Quality and Fracture Prevention. J Orthop Res 2014; 32:855-64. [PMID: 24700449 PMCID: PMC4716655 DOI: 10.1002/jor.22626] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 03/05/2014] [Indexed: 02/04/2023]
Abstract
Bone fracture resistance is determined by the amount of bone present ("bone quantity") and by a number of other geometric and material factors grouped under the term "bone quality." In May 2013, a workshop was convened among a group of clinicians and basic science investigators to review the current state of the art in Bone Quality and Fracture Prevention and to make recommendations for future directions for research. The AAOS/ORS/OREF workshop was attended by 64 participants, including two representatives of the National Institutes of Arthritis and Musculoskeletal and Skin Diseases and 13 new investigators whose posters stimulated additional interest. A key outcome of the workshop was a set of recommendations regarding clinically relevant aspects of both bone quality and quantity that clinicians can use to inform decisions about patient care and management. The common theme of these recommendations was the need for more education of clinicians in areas of bone quality and for basic science studies to address specific topics of pathophysiology, diagnosis, prevention, and treatment of altered bone quality. In this report, the organizers with the assistance of the speakers and other attendees highlight the major findings of the meeting that justify the recommendations and needs for this field.
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Affiliation(s)
- Eve Donnelly
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York,Hospital for Special Surgery, New York, New York
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Capozzi A, Lello S, Pontecorvi A. The inhibition of RANK-ligand in the management of postmenopausal osteoporosis and related fractures: the role of denosumab. Gynecol Endocrinol 2014; 30:403-8. [PMID: 24592987 DOI: 10.3109/09513590.2014.892067] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
There is great interest in new treatments of osteoporosis owing to general ageing of population and increased risk for fragility fractures in the elderly. Current therapies show a good efficacy in improving bone quality and bone density, but, in spite of a certain reduction in fracture rate, according to each treatment, the problem of osteoporotic fractures is yet far from to be solved. Moreover, some treatments may produce different side effects. Denosumab (Dmab), a receptor activator of nuclear factor kappa-B ligand (RANKL)-inhibitor, is an agent recently introduced in clinical practice for treatment of osteoporosis of postmenopausal women. Dmab has improved bone mineral density and prevented new vertebral and non-vertebral fractures with a similar efficacy in comparison with alendronate. Many clinical studies showed Dmab produces also significant improvement versus placebo in bone quality as indicated by decreasing markers of bone turnover. Patients using Dmab reported less risk of AFF (Atypical Femoral Fractures) and ONJ (Osteonecrosis of the Jaw) with an increased number of cellulitis. Here, we review articles using Dmab for female post-menopausal osteoporosis.
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Affiliation(s)
- Anna Capozzi
- Department of Endocrinology and Metabolism, Catholic University of Rome , Rome , Italy and
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Kostoff MD, Saseen JJ, Borgelt LM. Evaluation of fracture risk and potential drug holidays for postmenopausal women on long-term bisphosphonate therapy. Int J Womens Health 2014; 6:423-8. [PMID: 24855392 PMCID: PMC4010634 DOI: 10.2147/ijwh.s57549] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Study objective To describe characteristics of postmenopausal women on long-term bisphosphonate therapy who fall into one of four fracture risk categories (low, mild, moderate, high), and to determine the prevalence of women eligible for a drug holiday. Design Retrospective electronic health record review. Setting Eight primary care clinics within a university-based health care system. Patients A total of 201 postmenopausal women of ages 55–89 years, with osteopenia or osteoporosis, prescribed bisphosphonate therapy for >4 years, between October 10, 2002 and September 9, 2012. Main results The patients’ mean age was 71.4 (±8.2) years; their mean body mass index was 25.3 (±5.6) kg/m2; and 73.1% were white. Seventy-four out of 201 patients (36.8%) were low-risk; 10/201 (5.0%) were mild-risk; 72/201 (35.8%) were moderate-risk; and 45/201 (22.4%) were high-risk. Eighty-one women (40.3%) were eligible for a drug holiday or discontinuation. The estimated drug cost avoided per eligible patient was $574.80. Calcium and/or vitamin D supplementation was documented in 52.7% of women. Conclusion More than one-third of postmenopausal women taking long-term bisphosphonate therapy had low fracture risk, and over 40% of our patients were eligible for a drug holiday or discontinuation. These data emphasize the need to accurately assess risk and benefit in patients treated with bisphosphonate therapy.
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Affiliation(s)
- Matthew D Kostoff
- Departments of Clinical Pharmacy and Family Medicine, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences and School of Medicine, Aurora, CO, USA
| | - Joseph J Saseen
- Departments of Clinical Pharmacy and Family Medicine, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences and School of Medicine, Aurora, CO, USA
| | - Laura M Borgelt
- Departments of Clinical Pharmacy and Family Medicine, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences and School of Medicine, Aurora, CO, USA
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Lindtner RA, Tiaden AN, Genelin K, Ebner HL, Manzl C, Klawitter M, Sitte I, von Rechenberg B, Blauth M, Richards PJ. Osteoanabolic effect of alendronate and zoledronate on bone marrow stromal cells (BMSCs) isolated from aged female osteoporotic patients and its implications for their mode of action in the treatment of age-related bone loss. Osteoporos Int 2014; 25:1151-61. [PMID: 23974861 DOI: 10.1007/s00198-013-2494-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 08/07/2013] [Indexed: 12/22/2022]
Abstract
SUMMARY In the present study, we evaluated the potential for aminobisphosphonates to enhance the development of bone-forming osteoblasts from progenitor cells isolated from aged female osteoporotic patients. The aminobisphosphonates tested significantly enhanced osteoblast formation and thus lend further insights into their possible mode of action in the treatment of osteoporosis. INTRODUCTION The primary aim of this study was to evaluate the influence of aminobisphosphonates on the osteogenesis of human bone marrow stromal cells (hBMSCs) and mineralization of differentiating bone-forming cells isolated from osteoporotic patients. METHODS The influence of aminobisphosphonate treatment on hBMSC osteogenesis was assessed by the quantitative measurement of alkaline phosphatase (ALP) activity, in addition to quantitative reverse transcription polymerase chain reaction and Western blot analysis of known osteogenic markers. Mineralized matrix formation by hBMSC-derived osteoblasts was visualized and quantified using Alizarin red staining. RESULTS hBMSC cultures treated with osteogenic medium supplemented with zoledronate demonstrated a significant increase in Alizarin red staining after 3 weeks as compared to cells cultured in osteogenic medium alone. Similarly, cultures of differentiating hBMSCs isolated from patients receiving alendronate treatment also demonstrated an increased propensity for mineralization, even in the absence of further in vitro stimulation by zoledronate. The stimulatory effects of aminobisphosphonate treatment on hBMSC-derived osteoblast-mediated mineralization were independent of any alterations in ALP activity, although significant decreases in the expression levels of osteopontin (SPP1) were evident in hBMSCs following exposure to aminobisphosphonates. Further analysis including Western blotting and loss-of-function studies revealed osteopontin as having a negative influence on the mineralization of differentiating osteoporotic bone-forming cells. CONCLUSIONS The results presented here demonstrate for the first time that aminobisphosphonate treatment of osteoporotic hBMSCs enhances their capacity for osteoblast formation and subsequent mineral deposition, thus supporting the concept of aminobisphosphonates as having an osteoanabolic effect in osteoporosis.
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Affiliation(s)
- R A Lindtner
- Department of Trauma Surgery and Sports Medicine, Innsbruck Medical University, Innsbruck, Austria
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Abstract
PURPOSE OF REVIEW To evaluate design considerations for an osteoporosis large simple trial (LST). RECENT FINDINGS There is a growing need for more comparative effectiveness studies in osteoporosis. However, the design of such studies is challenged by issues surrounding study design, choosing comparator therapies, participant and outcome selection, data acquisition and data analysis. SUMMARY LSTs are real-world studies that can have high levels of generalizability, if designed properly. We propose novel approaches to LSTs focusing on some of the challenges associated with comparative effectiveness research in osteoporosis. In this review, we discuss these considerations in the context of bisphosphonate active comparator initiation and discontinuation trials, while presenting advantages and disadvantages of the various design aspects for such studies.
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Abstract
PURPOSE OF REVIEW The aim of this study is to provide a thorough updated review of the diagnosis and treatment of postmenopausal osteoporosis. RECENT FINDINGS There have been several important findings in the field of postmenopausal osteoporosis over the past 1-2 years. Fewer morphometric vertebral fractures were found in women treated for 6 years with zoledronic acid compared with those who stopped treatment after 3 years. Longer duration of bisphosphonate therapy is associated with a higher risk of atypical femur fractures. Combination therapy with teriparatide and denosumab appears to increase bone mineral density to a greater extent than either therapy alone in postmenopausal women at high risk for fracture. There are several novel therapies under investigation for the treatment of osteoporosis, which are in various stages of development. Nonadherence to osteoporosis therapies continues to be a major problem in clinical practice. SUMMARY There are numerous effective pharmacologic treatment options for postmenopausal osteoporosis. Bisphosphonate drug holidays continue to be an area of significant debate.
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Affiliation(s)
- Dima L Diab
- aDepartment of Internal Medicine, Division of Endocrinology/Metabolism bMercy Health Osteoporosis and Bone Health Services, Cincinnati, Ohio, USA
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Abstract
Osteoporosis is a skeletal disorder characterized by bone loss, which results in architectural deterioration of the skeleton, compromised bone strength and an increased risk of fragility fractures. Most current therapies for osteoporosis stabilize the skeleton by inhibiting bone resorption (antiresorptive agents), but the development of anabolic therapies that can increase bone formation and bone mass is of great interest. Wnt signalling induces differentiation of bone-forming cells (osteoblasts) and suppresses the development of bone-resorbing cells (osteoclasts). The Wnt pathway is controlled by antagonists that interact either directly with Wnt proteins or with Wnt co-receptors. The importance of Wnt signalling in bone formation is indicated by skeletal disorders such as sclerosteosis and van Buchem syndrome, which are caused by mutations in the gene encoding the Wnt antagonist sclerostin (SOST). Experiments in mice have shown that downregulation or neutralization of Wnt antagonists enhances bone formation. Phase II clinical trials show that 1-year treatment with antisclerostin antibodies increases bone formation, decreases bone resorption and leads to a substantial increase in BMD. Consequently, Wnt signalling can be targeted by the neutralization of its extracellular antagonists to obtain a skeletal anabolic response.
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Affiliation(s)
- Ernesto Canalis
- Department of Research, Saint Francis Hospital and Medical Centre, 114 Woodland Street, Hartford, CT 06105-1299, USA.
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Abstract
Bisphosphonates have been widely used in the treatment of osteoporosis with robust data from numerous placebo-controlled trials demonstrating efficacy in fracture risk reduction over 3-5 years of treatment. Although bisphosphonates are generally safe and well tolerated, concerns have emerged about adverse effects related to long-term use. For most patients with osteoporosis, the benefits of treatment outweigh the risks. Because these agents accumulate in bone with some persistent antifracture efficacy after therapy is stopped, it is reasonable to consider a 'drug holiday.' There is considerable controversy regarding the optimal duration of therapy and the length of the holiday, both of which should be based on individual assessments of risk and benefit.
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Affiliation(s)
- Dima L Diab
- Cincinnati VA Medical Center, University of Cincinnati Bone Health and Osteoporosis Center, Division of Endocrinology/Metabolism, Department of Internal Medicine, 260 Stetson Street, Suite 4200, Cincinnati, OH 45219, USA
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Zhang YH, Shen L, Shen Y, Chen XD, Jiang LS. Study on key genes and regulatory networks associated with osteoporosis by microarray technology. Genet Test Mol Biomarkers 2013; 17:625-30. [PMID: 23819813 DOI: 10.1089/gtmb.2013.0055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE DNA microarray data of patients with osteoporosis were compared with that of healthy people to identify key genes and thus disclose the underlying regulatory network. METHODS Microarray dataset GSE35958 was downloaded from the Gene Expression Omnibus database, including five gene chips from patients with primary osteoporosis and four from age-matching nonosteoporosis controls. Raw data were preprocessed and differentially expressed genes (DEGs) were identified by the t-test. Then, function and pathway annotations were given by gene ontology (GO) and KEGG. The regulatory network for the DEGs was established from the aspects of transcription factors and microRNAs (miRNAs). The regulators of the miRNAs were also predicted by the MATCH algorithm. RESULTS A total of 274 DEGs were obtained with 47 significantly over-represented GO terms and 2 KEGG pathways. Transcriptional and post-transcriptional regulatory networks were established for the DEGs. Moreover, upstream regulators of the miRNAs were also obtained. CONCLUSION A range of genes, which might be implicated in the development of osteoporosis were obtained in the present study. Our findings are of possible benefit for the understanding of the unsolved regulatory mechanisms, and future clinical diagnosis as well as treatment.
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Affiliation(s)
- Yue-Hui Zhang
- Department of Orthopedic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
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Kong SY, Kim DY, Han EJ, Park SY, Yim CH, Kim SH, Yoon HK. Effects of a 'drug holiday' on bone mineral density and bone turnover marker during bisphosphonate therapy. J Bone Metab 2013; 20:31-5. [PMID: 24524053 PMCID: PMC3780827 DOI: 10.11005/jbm.2013.20.1.31] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 01/28/2013] [Accepted: 01/28/2013] [Indexed: 12/29/2022] Open
Abstract
Background Recently long-term safety of bisphosphonate raises issues about the duration of therapy. We examined the effects of a drug holiday (DH) on bone mineral density (BMD) and bone turnover markers. Methods In Korean, 125 women of 50 years of age or older with T-score≤-3.0 of their lumbar or left femoral BMD initiated bisphosphonate from 1999 based on retrospective chart review. 125 patients who had used bisphosphonate≥5 years started DH in 2006. Lumbar (L1-4), left femoral neck, total BMD, serum parameter (β-crossLaps [CTx], phosphorus, total calcium, total alkaline phosphatase), and urinary parameter (calcium/creatinine ratio) were measured before, the time of starting, and after DH. Results After DH, lumbar, femoral neck and total BMD did not change significantly (0.757±0.093→0.747±0.102, P=0.135, 0.567±0.079→0.560±0.082, P=0.351, 0.698±0.008→0.691±0.090 g/cm2, P=0.115, respectively). Serum CTx and total alkaline phosphatase were increased significantly (0.205±0.120→0.791±0.44 ng/mL, P<0.001, 54.52±13.40→60.42±15.543 IU/L, P=0.001, respectively). Urinary calcium/creatinine ratio increased significantly (0.132±0.076→0.156±0.093, P=0.012). Conclusions A DH could be cautiously considered in patients with long-term use of bisphosphonate if there is a concern about severe suppression of bone turnover with respect to long-term use because insignificant changes of BMD and significant increase of bone turnover markers are shown during the period.
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Affiliation(s)
- Sung Yeol Kong
- Department of Internal Medicine, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
| | - Dae Young Kim
- Department of Internal Medicine, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
| | - Eun Jin Han
- Department of Internal Medicine, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
| | - So Young Park
- Department of Internal Medicine, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
| | - Chang Hoon Yim
- Department of Internal Medicine, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
| | - Sung Hoon Kim
- Department of Internal Medicine, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
| | - Hyun Koo Yoon
- Department of Internal Medicine, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
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