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Razavianzadeh N, Shahramirad S, Hasani M, Babaei H. Paget's bone disease in a nonendemic region: Exploring novel therapeutic strategies. Clin Case Rep 2024; 12:e9364. [PMID: 39206065 PMCID: PMC11348402 DOI: 10.1002/ccr3.9364] [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: 05/16/2024] [Revised: 06/22/2024] [Accepted: 07/19/2024] [Indexed: 09/04/2024] Open
Abstract
Paget's disease of bone (PDB) is a chronic condition causing abnormal bone remodeling, leading to pain, fractures, and complications. A 57-year-old female patient, asymptomatic and devoid of pain, incidentally exhibited elevated levels of alkaline phosphatase. Following a thorough consideration of potential differential diagnoses, the eventual diagnosis established was PDB. We recommended Fosamax (70 mg alendronate tablets) at two tablets twice weekly for 3 months to manage PDB due to patient preference and side effects with intravenous zoledronic acid. Subsequent assessments of alkaline phosphatase levels during follow-up examinations post-treatment revealed a reduction in their values.
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Affiliation(s)
- Nasrin Razavianzadeh
- Department of Medical Sciences, Shahrood BranchIslamic Azad UniversityShahroodIran
| | - Soheil Shahramirad
- Department of Medical Sciences, Shahrood BranchIslamic Azad UniversityShahroodIran
- Student Research Committee, Shahrood BranchIslamic Azad UniversityShahroodIran
| | - Mohammad Hasani
- Department of Medical Sciences, Shahrood BranchIslamic Azad UniversityShahroodIran
| | - Hessamedin Babaei
- Department of Medical Sciences, Shahrood BranchIslamic Azad UniversityShahroodIran
- Student Research Committee, Shahrood BranchIslamic Azad UniversityShahroodIran
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2
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The effect of two locally administered anti-resorptive agents on bone regeneration in a rat fibula model: Alendronate and 15-deoxy-Δ12,14-prostaglandin J2. J Craniomaxillofac Surg 2019; 47:1758-1766. [DOI: 10.1016/j.jcms.2018.04.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 03/29/2018] [Accepted: 04/19/2018] [Indexed: 11/17/2022] Open
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3
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Riggs MM, Cremers S. Pharmacometrics and systems pharmacology for metabolic bone diseases. Br J Clin Pharmacol 2019; 85:1136-1146. [PMID: 30690761 DOI: 10.1111/bcp.13881] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 12/30/2018] [Accepted: 01/19/2019] [Indexed: 12/20/2022] Open
Abstract
Mathematical modelling and simulation (M&S) of drug concentrations, pharmacologic effects and the (patho)physiologic systems within which they interact can be powerful tools for the preclinical, translational and clinical development of drugs. Indeed, the Prescription Drug User Fee Act (PDUFA VI), incorporated as part of the FDA Reauthorization Act of 2017 (FDARA), highlights the goal of advancing model-informed drug development (MIDD). MIDD can benefit development across many drug classes, including for metabolic bone diseases such as osteoporosis, cancer-related and numerous rare metabolic bone diseases; conditions characterized by significant morbidity and mortality. A drought looms in terms of the availability of new drugs to better treat these devastating diseases. This review provides an overview of several M&S approaches ranging from simple pharmacokinetic to integrated pharmacometric and systems pharmacology modelling. Examples are included to illustrate the use of these approaches during the development of several drugs for metabolic bone diseases such as bisphosphonates, denosumab, teriparatide and sclerostin inhibitors (romosozumab and blosozumab).
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Affiliation(s)
| | - Serge Cremers
- Departments of Pathology & Cell Biology and Medicine, Columbia University Medical Center, New York, NY, USA
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4
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Abstract
The rate of bone turnover increases around the time of menopause, and new bone may be remodeled before it is has been completely mineralized. If this is left untreated, osteoporosis often develops, leading to fractures, particularly of the spine and hip, which represent an enormous burden in terms of suffering, healthcare expenditure, disabilities and death. Bisphosphonates are potent inhibitors of bone resorption, which slow or arrest progressive bone loss. Continuous treatment with bisphosphonates reduces bone turnover, improves bone microarchitecture and increases bone mass, leading to greater mechanical strength and reduced fracture risk. Since osteoporosis is a chronic, progressive condition, treatment has to continue for many years. Therefore, the efficacy and safety of bisphosphonates, particularly alendronate and risedronate, have been evaluated in many thousands of patients for up to 10 years of continuous use. These drugs remain the cornerstone of osteoporosis treatment and appear to have favorable safety and efficacy profiles throughout long-term usage.
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Affiliation(s)
- René Rizzoli
- Service of Bone Diseases, WHO Collaborating Center for Osteoporosis Prevention, Department of Rehabilitation and Geriatrics, University Hospital, Rue Micheli-du-Crest 24, CH-1211 Geneva 14, Switzerland, Tel.: +4122 372 99 50; Fax: +4122 382 99 73
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5
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Hur W, Park M, Lee JY, Kim MH, Lee SH, Park CG, Kim SN, Min HS, Min HJ, Chai JH, Lee SJ, Kim S, Choi TH, Choy YB. Bioabsorbable bone plates enabled with local, sustained delivery of alendronate for bone regeneration. J Control Release 2016; 222:97-106. [DOI: 10.1016/j.jconrel.2015.12.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 11/27/2015] [Accepted: 12/08/2015] [Indexed: 11/15/2022]
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6
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Brock GR, Chen JT, Ingraffea AR, MacLeay J, Pluhar GE, Boskey AL, van der Meulen MCH. The Effect of Osteoporosis Treatments on Fatigue Properties of Cortical Bone Tissue. Bone Rep 2015; 2:8-13. [PMID: 25642445 PMCID: PMC4306187 DOI: 10.1016/j.bonr.2014.10.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Bisphosphonates are commonly prescribed for treatment of osteoporosis. Long-term use of bisphosphonates has been correlated to atypical femoral fractures (AFF). AFFs arise from fatigue damage to bone tissue that cannot be repaired due to pharmacologic treatments. Despite fatigue being the primary damage mechanism of AFFs, the effects of osteoporosis treatments on fatigue properties of cortical bone are unknown. To examine if fatigue-life differences occur in bone tissue after different pharmacologic treatments for osteoporosis, we tested bone tissue from the femurs of sheep given a metabolic acidosis diet to induce osteoporosis, followed by treatment with a selective estrogen reception modulator (raloxifene), a bisphosphonate (alendronate or zoledronate), or parathyroid hormone (teriparatide, PTH). Beams of cortical bone tissue were created and tested in four-point bending fatigue to failure. Tissues treated with alendronate had reduced fatigue life and less modulus loss at failure compared to other treatments, while tissue treated with PTH had a prolonged fatigue life. No loss of fatigue life occurred with zoledronate treatment despite its greater binding affinity and potency compared to alendronate. Tissue mineralization measured by microCT did not explain the differences seen in fatigue behavior. Increased fatigue life with PTH suggests that current treatment methods for AFF could have beneficial effects for restoring fatigue life. These results indicate that fatigue life differs with each type of osteoporosis treatment.
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Affiliation(s)
- Garry R Brock
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY
| | - Julia T Chen
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY
| | - Anthony R Ingraffea
- School of Civil and Environmental Engineering, Cornell University, Ithaca, NY
| | | | | | - Adele L Boskey
- Musculoskeletal Integrity Program, Hospital for Special Surgery, New York, NY
| | - Marjolein C H van der Meulen
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY ; Musculoskeletal Integrity Program, Hospital for Special Surgery, New York, NY
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7
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Schnitzer T, Bone HG, Crepaldi G, Adami S, McClung M, Kiel D, Felsenberg D, Recker RR, Tonino RP, Roux C, Pinchera A, Foldes AJ, Greenspan SL, Levine MA, Emkey R, Santora AC, Kaur A, Thompson DE, Yates J, Orloff JJ. Therapeutic equivalence of alendronate 70 mg onceweekly and alendronate 10 mg daily in the treatment of osteoporosis. Aging Clin Exp Res 2014. [DOI: 10.1007/bf03339822] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Imai K. Alendronate sodium hydrate (oral jelly) for the treatment of osteoporosis: review of a novel, easy to swallow formulation. Clin Interv Aging 2013; 8:681-8. [PMID: 23766643 PMCID: PMC3679967 DOI: 10.2147/cia.s37199] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Osteoporosis is a skeletal disorder characterized by loss of bone mass, decreased bone strength, and an increased risk of bone fracture. The disease progresses with age, especially in postmenopausal women. Japan is one of the most rapidly aging societies worldwide. Japanese individuals over 65 years of age constituted 23.0% of the population in 2010 and 25.1% to 25.2% as of 2013. The estimated number of people with osteoporosis in Japan is currently 13 million. Bisphosphonates increase bone mineral density by inhibiting osteoclast-mediated bone resorption, thereby reducing the risk of fractures. Alendronate sodium hydrate (alendronate) is a bisphosphonate that potently inhibits bone resorption and is used to treat osteoporosis. Sufficient water is required to take an alendronate oral tablet; insufficient water could result in digestive system diseases, such as esophageal ulceration. Elderly patients with swallowing difficulty may choke on the tablet. Taking a tablet with oral jelly is a method to prevent digestive system disease and reduce the choking hazard. Once-weekly alendronate oral jelly was approved in 2012 by the Ministry of Health, Labour, and Welfare of Japan as the world's first drug for osteoporosis in a jelly formulation. It consists of a jelly portion and an air portion. The jelly formulation is smoothly discharged by pushing the air portion. Therefore, elderly patients with physical disabilities are able to easily take all of the jelly formulation from the package. In this review, this new formulation of alendronate sodium hydrate (oral jelly) is introduced and discussed in terms of osteoporosis treatment. This new formulation provides an alternative so that patients may select a method of dosing tailored to their preferences. Management of osteoporosis involves assessing fracture risk and preventing fractures. Higher adherence to the treatment of patients with osteoporosis and prevention of osteoporotic fractures are issues to be resolved.
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Affiliation(s)
- Kazuhiro Imai
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan.
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Nakamura T, Osawa M, Itoh M, Yamaguchi H, Iinuma N, Hayakawa Y, Suzuki H, Kamisaki T, Iwayama S, Nishikawa M. The effect of risedronate (17.5 mg/week) treatment on quality of life in Japanese women with osteoporosis: a prospective observational study. J Bone Miner Metab 2012; 30:715-21. [PMID: 22868656 DOI: 10.1007/s00774-012-0372-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Accepted: 06/21/2012] [Indexed: 12/19/2022]
Abstract
A prospective observational study to test the effects of risedronate 17.5 mg/week treatment on quality of life (QOL) of 1,363 Japanese female patients with osteoporosis showed QOL improvement after 12 weeks of administration. Comorbid factors such as ischemic heart disease, hip osteoarthritis, and higher values of FRAX blunted the effects of QOL of the treatment. Few studies have investigated the effect of osteoporosis treatment on QOL in relationship to comorbid factors other than osteoporosis and fracture. Efficacy was determined by changes over time in EQ-5D at baseline, at 12 and 24 weeks, and at the final assessment. Factors affecting changes in EQ-5D were evaluated with a multivariate analysis. Safety was determined by assessing the incident rate of adverse events. The improvement of EQ-5D compared to baseline was observed as significant after 12 weeks of treatment (p < 0.001). The greatest improvement was observed in the dimension of "pain/discomfort" by the multivariate analysis (p < 0.001). Factors affecting QOL improvement were FRAX value without BMD, age, glucocorticoid use, ischemic heart disease, hip osteoarthritis, and pain. The incidence rate of drug-related adverse events was 4.72 % (95 % confidence interval 3.63-6.02 %). Risedronate at 17.5 mg/week improved the QOL in patients with osteoporosis among Japanese women, and comorbidity factors decreased the effects.
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Affiliation(s)
- Toshitaka Nakamura
- Department of Orthopedic Surgery, University of Occupational and Environmental Health, Yahata-nishi-ku, Kitakyushu, Fukuoka, Japan
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You L, Sheng ZY, Chen JY, Pan L, Chen L. The safety and efficacy of early-stage bi-weekly alendronate to improve bone mineral density and bone turnover in chinese post-menopausal women at risk of osteoporosis. J Int Med Res 2011; 39:302-10. [PMID: 21672334 DOI: 10.1177/147323001103900133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The efficacy and safety of early, low frequency antiresorptive drug intervention for osteopaenia on bone mineral density (BMD) and bone turnover in Chinese post-menopausal women at risk of developing osteoporosis were investigated. A total of 180 women aged 40 - 70 years were enrolled and equally randomized to receive either 70 mg alendronate once every 2 weeks plus 0.5 μg alfacalcidol daily (treatment group) or alfacalcidol 0.5 μg daily alone (control group) for 12 months. In the treatment group, lumbar spine and total hip BMD at 12 months had increased significantly from baseline and compared with the control group. There were also significant reductions in serum levels of the bone turnover biomarkers, bone-specific alkaline phosphatase and C-terminal telopeptide of type I collagen, compared with the control. No serious adverse events were observed in either group and safety profiles were similar. It was concluded that early intervention with 70 mg alendronate once every 2 weeks was safe, well tolerated and more effective than alfacalcidol alone (control) in increasing BMD and reducing bone turnover, and might prevent serious outcomes, such as fragility fractures, reduce rates of adverse effects and improve patient compliance.
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Affiliation(s)
- L You
- Department of Osteoporosis, Shanghai First People's Hospital, Shanghai Jiaotong University, 100 Haining Road, Shanghai 200080, China.
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11
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Chiang SS, Chang SP, Pan TM. Osteoprotective effect of Monascus-fermented dioscorea in ovariectomized rat model of postmenopausal osteoporosis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:9150-7. [PMID: 21800902 DOI: 10.1021/jf201640j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This experiment established the ovariectomized (OVX) rat model of postmenopausal osteoporosis and examined the effect of the oral administration of different dosages of dioscorea, red mold dioscorea (RMD), and soy isoflavones on bone mineral density (BMD). Three months after osteoporosis had been induced and 4 weeks after feeding had begun, the tibia and femur BMD of OVX rats administered RMD showed significant increases compared with that of all other groups of OVX rats. Closer examination using microcomputed tomography also revealed that the RMD-administered rats had denser trabecular bone volume and a higher trabecular number compared to all other rat groups. Reconstructed 3D imaging indicated increases in cancellous bone mineral content, cancellous bone mineral density, and cortical bone mineral content of the proximal tibia in OVX rats. These findings indicate that administration of monacolin K and phytoestrogen diosgenin could prevent bone loss induced by estrogen deficiency.
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Affiliation(s)
- Shen-Shih Chiang
- Department of Biochemical Science and Technology, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
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12
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Li B, Ling Chau JF, Wang X, Leong WF. Bisphosphonates, specific inhibitors of osteoclast function and a class of drugs for osteoporosis therapy. J Cell Biochem 2011; 112:1229-42. [DOI: 10.1002/jcb.23049] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Papapoulos SE. Use of bisphosphonates in the management of postmenopausal osteoporosis. Ann N Y Acad Sci 2010; 1218:15-32. [DOI: 10.1111/j.1749-6632.2010.05767.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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14
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Ringe JD. Development of clinical utility of zoledronic acid and patient considerations in the treatment of osteoporosis. Patient Prefer Adherence 2010; 4:231-45. [PMID: 20694183 PMCID: PMC2915556 DOI: 10.2147/ppa.s10917] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Indexed: 01/22/2023] Open
Abstract
Osteoporosis is a major health concern, which results in the increased risk of fractures. There is a high risk for the first or consecutive fractures leading to considerable morbidity and debilitating consequences if osteoporosis is untreated. Currently, bisphosphonates are the mainstay of treatment for osteoporosis though long-term persistence and adherence to bisphosphonates, especially those taken orally, remain low. This medication noncompliance has serious consequences on osteoporotic patients as it is associated with a significantly higher fracture risk. Intravenous (IV) zoledronic acid (ZOL), developed to increase compliance by overcoming the frequent and burdensome dosing requirements of oral bisphosphonates, is the first and the only once-yearly bisphosphonate globally approved for use in the treatment of up to 6 indications of osteoporosis. Several clinical studies have documented that a single infusion of IV ZOL resulted in decreased bone turnover and improved bone density for at least 12 months post infusion. This article traces the development of ZOL's clinical utility and evaluates its patient preference by collating data from all major clinical trials, studying the efficacy and safety of ZOL in the treatment of osteoporosis and other benign bone disorders.
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Affiliation(s)
- Johann D Ringe
- Direktor der Med. Klinik 4, Allgemeine Innere, und Westdeutsches Osteoporose Zentrum (WOZ), Klinikum Leverkusen gGmbH, Leverkusen, Germany
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Choi A, Gang H, Whang J, Gwak H. Pharmacokinetic characteristics of formulated alendronate transdermal delivery systems in rats and humans. Drug Deliv 2010; 17:249-54. [DOI: 10.3109/10717541003680999] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Miyakoshi N, Kasukawa Y, Sasaki H, Kamo K, Shimada Y. Impact of spinal kyphosis on gastroesophageal reflux disease symptoms in patients with osteoporosis. Osteoporos Int 2009; 20:1193-8. [PMID: 18949531 DOI: 10.1007/s00198-008-0777-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2008] [Accepted: 09/19/2008] [Indexed: 10/21/2022]
Abstract
SUMMARY Spinal kyphosis has been speculated to participate in the increased frequency of gastroesophageal reflux disease (GERD) in patients with osteoporosis. The present study provides further evidence that increases in lumbar kyphosis and number of vertebral fractures represent very important risk factors for GERD in patients with osteoporosis. INTRODUCTION Osteoporosis and spinal kyphosis have been speculated to participate in the increased frequency of gastroesophageal reflux disease (GERD). The present study examined whether GERD in patients with osteoporosis is affected by spinal factors including spinal kyphosis in the presence of oral pharmacotherapies. METHODS Subjects comprised 112 patients with osteoporosis (mean age, 78 years) who responded to the Frequency Scale for Symptoms of GERD (FSSG) questionnaire, regardless of complaints. Relationships between total FSSG score and number of vertebral fractures, angles of kyphosis, use of bisphosphonates and nonsteroidal anti-inflammatory drugs (NSAIDs), and total number of oral medicines per day were evaluated. Logistic regression identified factors associated with GERD. RESULTS Bisphosphonates and NSAIDs did not affect total FSSG score. Total FSSG score showed significant positive correlations with total number of medicines (r = 0.283, p = 0.0025), angle of lumbar kyphosis (r = 0.576, p = 0.0001), and numbers of thoracic vertebral fractures (r = 0.214, p = 0.0232) and lumbar vertebral fractures (r = 0.471, p < 0.0001). Angle of lumbar kyphosis and number of lumbar vertebral fractures were identified by multivariate analysis as indices affecting the presence of GERD. CONCLUSION Increases in angle of lumbar kyphosis and number of lumbar vertebral fractures may represent very important risk factors for GERD in osteoporotic patients.
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Affiliation(s)
- N Miyakoshi
- Division of Orthopedic Surgery, Department of Neuro and Locomotor Science, Akita University School of Medicine, Akita, Japan.
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Sunyecz J. Optimizing dosing frequencies for bisphosphonates in the management of postmenopausal osteoporosis: patient considerations. Clin Interv Aging 2009; 3:611-27. [PMID: 19281054 PMCID: PMC2682394 DOI: 10.2147/cia.s2496] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Postmenopausal osteoporosis is common and underrecognized among elderly women. Osteoporotic fractures cause disability and disfigurement and threaten patients' mobility, independence, and survival. Care for incident fractures in this age group must go beyond orthopedic repair, to assessment and treatment of the underlying bone fragility. Fracture risk can be reduced by vitamin D and calcium supplementation along with antiresorptive drug treatment. First-line osteoporosis pharmacotherapy employs nitrogen-containing bisphosphonates. The inconvenience of daily oral treatment has motivated development of weekly, monthly, and intermittent oral regimens, as well as quarterly and yearly intravenous (i.v.) regimens. Ibandronate is the first bisphosphonate to have shown direct anti-fracture efficacy with a non-daily regimen; it was approved for once-monthly oral dosing in 2005 and for quarterly i.v. dosing in 2006. Intermittent oral risedronate and yearly i.v. zoledronic acid were approved in 2007. Newly available regimens with extended dosing intervals reduce the inconvenience of bisphosphonate therapy and provide patients with a range of options from which to select a maximally sustainable course of treatment. This review discusses the development, efficacy, safety, and tolerability of extended-interval bisphosphonate regimens and examines their potential to improve patient acceptance and long-term success of osteoporosis treatment.
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Affiliation(s)
- John Sunyecz
- MenopauseRx, Inc., Laurel Highlands Ob/Gyn, P.C., 1142 National Pike Road, Hopwood, PA 15445, USA.
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18
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Sosa Henríquez M, Hernández Hernández D. Tratamiento de las osteoporosis. Rev Clin Esp 2009. [DOI: 10.1016/s0014-2565(09)73245-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Karamustafa F, Çelebi N. Development of an oral microemulsion formulation of alendronate: Effects of oil and co-surfactant type on phase behaviour. J Microencapsul 2008; 25:315-23. [DOI: 10.1080/02652040801977045] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Boonen S, Vanderschueren D, Venken K, Milisen K, Delforge M, Haentjens P. Recent developments in the management of postmenopausal osteoporosis with bisphosphonates: enhanced efficacy by enhanced compliance. J Intern Med 2008; 264:315-32. [PMID: 18823505 DOI: 10.1111/j.1365-2796.2008.02010.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Bisphosphonates are the current mainstay of treatment for postmenopausal osteoporosis. Although daily oral dosing is effective, it is associated with poor compliance, partly because of the pre and postdose fasting and posture requirements. This negatively impacts treatment outcomes, leading to a reduced clinical benefit. Improved, yet still suboptimal adherence has been noticed with less frequent bisphosphonate dosing e.g. once-weekly and once-monthly oral regimens. The recently approved quarterly intravenous (i.v.) injection regimen of ibandronate and yearly i.v. infusion of zoledronic acid are attractive options in the management of postmenopausal osteoporosis. These regimens may assure quarterly and year long compliance.
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Affiliation(s)
- S Boonen
- Leuven University, Department of Experimental Medicine, Leuven, Belgium.
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Hochberg MC, Rizzoli R. Long-term experience with alendronate in the treatment of osteoporosis. Expert Opin Pharmacother 2007; 7:1201-10. [PMID: 16732706 DOI: 10.1517/14656566.7.9.1201] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Osteoporosis is characterised by increased bone turnover, low bone mass and impaired bone microarchitecture, leading to increased fracture risk. Effective anticatabolic therapies decrease fracture risk by reducing the rate of bone turnover, thereby maintaining bone microarchitecture and increasing bone mineral density. At present, potent oral bisphosphonates, such as alendronate (FOSAMAX; Merck & Co.), are preferred for the treatment of osteoporosis. Long-term clinical trial data demonstrate that alendronate is effective and generally well tolerated. Results from head-to-head studies and meta-analyses suggest that alendronate is more effective than certain other anticatabolic agents in the treatment of patients with osteoporosis.
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Affiliation(s)
- Marc C Hochberg
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
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22
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Srisubut S, Teerakapong A, Vattraphodes T, Taweechaisupapong S. Effect of local delivery of alendronate on bone formation in bioactive glass grafting in rats. ACTA ACUST UNITED AC 2007; 104:e11-6. [PMID: 17656137 DOI: 10.1016/j.tripleo.2007.04.022] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2007] [Revised: 04/01/2007] [Accepted: 04/17/2007] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The aim of this study was to investigate whether local delivery of alendronate could improve bone formation after bioactive glass grafting in rat mandible. STUDY DESIGN Twenty-six male Sprague-Dawley rats were divided into control and experimental groups (13 rats/group). A surgical defect was created on the angle of mandible of each animal. In the experimental group, a bioactive glass soaked with the alendronate solution was placed in the bone defect, and in the control group the bioactive glass soaked with saline was used. All animals were killed after 4 weeks. The number of osteoclasts and the amount of new bone formation were evaluated and compared. RESULTS Four weeks after surgery, the experimental group had significantly more bone formation than the control groups (P < .05). However, no statistically significant difference was found between the groups when the numbers of osteoclasts were compared. CONCLUSION Histologic results showed that a single dose of local delivery of alendronate improves bone formation. However, further studies are required to elucidate the effect of local delivery of alendronate on bone formation in humans.
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Affiliation(s)
- Suthasiny Srisubut
- Department of Periodontology, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
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Papapoulos SE, Schimmer RC. Changes in bone remodelling and antifracture efficacy of intermittent bisphosphonate therapy: implications from clinical studies with ibandronate. Ann Rheum Dis 2007; 66:853-8. [PMID: 17277001 PMCID: PMC1955119 DOI: 10.1136/ard.2006.064931] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2007] [Indexed: 11/04/2022]
Abstract
Bisphosphonates reduce the rate of bone resorption and bone remodelling. Given daily, they decrease the risk of fractures in postmenopausal osteoporosis. When bisphosphonates were given at extended drug-free intervals this antifracture efficacy was generally not seen. This may be due to the different pattern of bone remodelling changes. Data from randomised clinical studies of ibandronate, given orally or intravenously, at different doses and for variable time intervals to women with osteoporosis were examined to explore the relationship between intermittent bisphosphonate therapy, changes in bone resorption and fracture risk. The magnitude of the reduction of the rate of bone resorption at the end of the drug-free interval rather than its fluctuation pattern after bisphosphonate administration determines antifracture efficacy, provided that these fluctuations occur within the premenopausal range. Prolongation of the drug-free interval beyond 2 weeks should be compensated by a dose higher than the cumulative daily dose.
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Affiliation(s)
- S E Papapoulos
- Department of Endocrinology and Metabolic Diseases, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, The Netherlands.
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Pilipović N, Branković S, Vujasinović-Stupar N. Effects of Alendronate on bone mass in women with osteoporosis. MEDICINSKI PREGLED 2007; 59:427-35. [PMID: 17345818 DOI: 10.2298/mpns0610427p] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This paper presents the results of a two-year study of the effects of alendronate (Fosamax) on bone mass in 187 women with osteoporosis, mean age 57.68 years. Bone mass, i.e. bone mineral density (BMD) was measured at the lumbar spine. Measurements were performed prior to treatment, one year and two years after treatment using the DEXA method. The BMD was examined in 65 women, mean age 54.02, taking calcium and vitamin D, and in 75 women mean age 57.16, without any therapy. The baseline BMD (T score) in the alendronate group was -2.87 SD, whereas in the two control groups it measured -1.86 SD and -2.02 SD, respectively. A significant improvement of bone mass, by 5.8%, was registered after a year of treatment with alendronate, and by 8.3% after two years. In patients receiving calcium and vitamin D, a significant increase of bone mass was established as well: by 2.9% after a year, but the values declined back to the baseline after the second year. In patients without any treatment the bone mass decreased by 0.6% after a year, and by 0.9% after the second year.
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Ettinger MP, Gallagher R, MacCosbe PE. Medication persistence with weekly versus daily doses of orally administered bisphosphonates. Endocr Pract 2006; 12:522-8. [PMID: 17002926 DOI: 10.4158/ep.12.5.522] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To compare medication persistence among patients receiving daily orally administered bisphosphonates with persistence among patients receiving weekly orally administered bisphosphonates to ascertain whether less frequent dosing is associated with better long-term treatment persistence. METHODS A large, longitudinal cohort of female patients (N = 211,319) receiving prescriptions for alendronate or risedronate from approximately 14,000 US retail pharmacies was assessed. Medication persistence was defined as the percentage of patients who continued to take bisphosphonate therapy during each month (that is, having at least 1 day of medication supply in that month) for a 1-year observation period. RESULTS The inconvenience and complexity of required dosing procedures with oral bisphosphonate therapy for the prevention and treatment of osteoporosis are thought to be major factors that hinder medication persistence, and poor persistence is associated with suboptimal health-care outcomes. In this study, the percentage of patients continuing to take bisphosphonate therapy steadily declined with both daily and weekly oral treatment regimens during the course of the 12-month observation period. Consistently, however, medication persistence was higher among patients receiving the weekly rather than the daily regimen. Only 56.7% of patients receiving the weekly regimen and only 39.0% of patients receiving the daily regimen continued to take bisphosphonate therapy at month 12 of the study period (P<0.0001). CONCLUSION This study demonstrates that weekly dosing of orally administered bisphosphonates is associated with higher medication persistence than is daily dosing. Nevertheless, more than 40% of patients did not persist with weekly bisphosphonate therapy for at least 12 months. Thus, medication persistence was inadequate even with use of the weekly regimen. Additional research is needed to determine whether persistence can be further improved by extending the dosing interval beyond once weekly.
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Epstein S, Delmas PD, Emkey R, Wilson KM, Hiltbrunner V, Schimmer RC. Oral ibandronate in the management of postmenopausal osteoporosis: Review of upper gastrointestinal safety. Maturitas 2006; 54:1-10. [PMID: 16522358 DOI: 10.1016/j.maturitas.2006.01.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2005] [Revised: 01/17/2006] [Accepted: 01/26/2006] [Indexed: 11/16/2022]
Abstract
Oral daily bisphosphonates carry a potential for gastrointestinal (GI) adverse events, which has been partly addressed by introducing once-weekly regimens. Nevertheless, the need to follow inconvenient dosing instructions every week could still hinder long-term compliance and therapeutic outcome. In addition, survey data indicates that many patients would prefer a once-monthly rather than once-weekly bisphosphonate dosing regimen. Ibandronate is a potent, nitrogen-containing bisphosphonate specifically developed for less frequent administration. In a pivotal study in postmenopausal osteoporosis, oral ibandronate, administered daily or with a between-dose interval of >2 months, demonstrated robust antifracture efficacy and an overall incidence of upper GI adverse events similar to placebo, even in patients at increased risk of such events. This and other clinical studies conducted in postmenopausal women demonstrate that oral ibandronate has an excellent upper GI safety profile.
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Affiliation(s)
- Sol Epstein
- Mt Sinai Medical Center, NY, USA, and INSERM Research Unit 403 and Claude Bernard University, Lyon, France.
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Reginster JY, Felsenberg D, Cooper C, Stakkestad JA, Miller PD, Kendler DL, Adami S, McClung MR, Bolognese MA, Civitelli R, Dumont E, Bonvoisin B, Recker RR, Delmas PD. A new concept for bisphosphonate therapy: a rationale for the development of monthly oral dosing of ibandronate. Osteoporos Int 2006; 17:159-66. [PMID: 15959614 DOI: 10.1007/s00198-005-1957-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2004] [Accepted: 05/18/2005] [Indexed: 11/29/2022]
Abstract
Oral daily and weekly bisphosphonates represent the current mainstay of treatment for postmenopausal osteoporosis (PMO). However, the inconvenience of frequent dosing is known to negatively affect adherence to therapy in the long term. This has prompted the development of convenient oral bisphosphonate regimens that feature simple, less frequent dosing schedules. Such regimens require high potency agents, which can be given at low effective doses and that also have good tolerability. Ibandronate is a potent, nitrogen-containing bisphosphonate with proven efficacy when given intermittently to estrogen-depleted beagle dogs, rats and cynomolgus monkeys. Clinically, a pivotal prospective study has established that oral ibandronate has significant vertebral fracture efficacy in PMO, whether given daily (2.5 mg) or intermittently (20 mg every other day for 12 doses every 3 months; extended between-dose interval>2 months). Both oral regimens were well tolerated, which is noteworthy as patients with a history of gastrointestinal (GI) disturbance were not specifically excluded. As a result of these findings, a large, multinational, randomized, double-blind study (Monthly Oral iBandronate In LadiEs: MOBILE) is currently exploring the non-inferiority of once-monthly oral ibandronate (100 or 150 mg) to the oral daily ibandronate (2.5 mg) regimen with proven anti-fracture efficacy, in terms of lumbar spine bone mineral density (BMD) change. As with the trials investigating the weekly administration of other bisphosphonates, vertebral fracture efficacy will be inferred if the study demonstrates the non-inferiority of once-monthly ibandronate to the proven oral daily regimen in terms of spinal BMD change. The availability of this once-monthly ibandronate regimen is expected to offer benefits in terms of convenience (by having to follow dosing recommendations once a month vs. once daily or weekly) and potentially tolerability (by reducing the potential for upper GI irritation that can result from frequent, repeated exposure). Greater convenience and tolerability may enhance the therapy adherence and, hence, improve long-term therapeutic outcomes in PMO.
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Affiliation(s)
- Jean-Yves Reginster
- Unite d'Exploration du Metabolisme de l'Os et du Cartilage, CHU Centre Ville, Liége, Belgium.
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Abstract
UNLABELLED Bisphosphonates currently are the preferred therapy for treating osteoporosis. Treatment with potent bisphosphonates such as alendronate or risedronate decreases biochemical markers of bone turnover and increases bone mineral density. These changes are associated with significant reductions in vertebral and nonvertebral fracture risk. Clinical trial data with up to 10 years of followup shows these agents are effective and well tolerated for long-term periods. Daily administration is effective and generally well tolerated. However, once weekly doses are more convenient, which may enhance long-term compliance and lead to more successful outcomes. The pharmacokinetics and mechanism of action predict the short-term and long-term skeletal effects and safety profile of once-weekly doses of bisphosphonates are similar to daily doses. These predictions are supported by authors of trials of up to 2 years who report once-weekly doses are therapeutically equivalent to daily doses in terms of BMD and biochemical markers of bone remodeling. Once-weekly bisphosphonate doses have safety and tolerability profiles as good as daily doses and are comparable with the placebo. LEVEL OF EVIDENCE Therapeutic study, Level V (expert opinion). See the Guidelines for Authors for a complete description of the levels of evidence.
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Affiliation(s)
- René Rizzoli
- Division of Bone Diseases [WHO Collaborating Center for Osteoporosis Prevention], Department of Rehabilitation and Geriatrics, University Hospital, Geneva, Switzerland.
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Kishimoto H, Fukunaga M, Kushida K, Shiraki M, Itabashi A, Nawata H, Nakamura T, Ohta H, Takaoka K, Ohashi Y. Efficacy and tolerability of once-weekly administration of 17.5 mg risedronate in Japanese patients with involutional osteoporosis: a comparison with 2.5-mg once-daily dosage regimen. J Bone Miner Metab 2006; 24:405-13. [PMID: 16937274 DOI: 10.1007/s00774-006-0706-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2006] [Accepted: 05/16/2006] [Indexed: 10/24/2022]
Abstract
In this multicenter, randomized, double-blind controlled trial, the efficacy and safety of once-weekly dosing with 17.5 mg risedronate was compared with once-daily dosing with 2.5 mg risedronate in Japanese patients with involutional osteoporosis. A total of 496 patients were randomized to receive either once-weekly (n = 249) or once-daily (n = 247) treatment. All patients were supplemented with 200 mg/day calcium. Following 48 weeks of treatment, the mean (+/-SD) percent changes, from baseline, in the bone mineral density of the lumbar spine (L2-L4 BMD) in the once-weekly and once-daily treatment groups were 5.36 +/- 4.27% and 5.87 +/- 4.47%, respectively. The difference between the groups was -0.5% (95% confidence interval: -1.35% to 0.35%), demonstrating that the effect on BMD of once-weekly treatment was not inferior to that of once-daily treatment. The time-course reductions in biochemical markers of bone resorption (urinary N- and C-telopeptide of type I collagen) and bone formation (bone-specific alkaline phosphatase) were similar for the two dosing regimens. There were no differences in the incidence of new vertebral fractures or the worsening of existing fractures between the once-weekly (2.2%) and once-daily (2.7%) dosing regimens. No significant differences were observed between the two dosing regimens in the incidence or the type of adverse events. However, 10.1% of the patients in the once-daily group withdrew due to adverse events as compared to 5.2% in the once-weekly group. Moreover, drug-related adverse events, including upper gastrointestinal disorders and abnormal changes in laboratory parameters, tended to be less in the once-weekly dosing regimen than in the once-daily dosing regimen. In conclusion, once-weekly oral dosing with 17.5 mg risedronate was well tolerated in Japanese osteoporotic patients, and showed equivalent efficacy to once-daily oral dosing with 2.5 mg risedronate. This once-weekly regimen is expected to provide a more convenient therapeutic option as an alternative to daily dosing and to enhance patient compliance in long-term therapy for osteoporosis.
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Affiliation(s)
- Hideaki Kishimoto
- Department of Orthopedics, San-in Rosai Hospital, 1-8-1 Kaike-Shinden, Yonago, 683-0002, Japan.
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Abstract
Osteoporosis and fragility fractures are common in the elderly population and represent a large public health burden. Non-pharmacological recommendations for the management of osteoporosis include modification of lifestyle behaviours, increased weight-bearing exercise and consumption - through dietary or supplement sources - of adequate amounts of calcium and vitamin D. Although current guidelines include recommendations on calcium and vitamin D intake, patients frequently do not take sufficient amounts, even when supplements are provided free of charge. Vitamin D is essential for mineral metabolism, and low levels are associated with impaired skeletal metabolism and neuromuscular function. Nutritional sources of vitamin D are limited, and supplementation is usually necessary. A high prevalence of low vitamin D levels has been reported in a number of populations worldwide, including women being treated for osteoporosis and those with fragility fractures. At present, bisphosphonates are the most commonly prescribed pharmacological treatments for osteoporosis, and alendronic acid is the most frequently prescribed bisphosphonate. A nitrogen-containing bisphosphonate, alendronic acid has demonstrated anti-fracture efficacy at vertebral and non-vertebral skeletal sites, including the hip, in addition to long-term safety and efficacy. Weekly administration of alendronic acid takes advantage of the pharmacokinetics of the drug and osteoclast biology to optimise treatment, and may improve patient adherence. Combining alendronic acid 70mg and colecalciferol (vitamin D(3)) 2800 IU in a single, once-weekly tablet has the advantage of combining the proven efficacy of an established bisphosphonate, alendronic acid, with the amount of vitamin D currently recommended for osteoporosis management.
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Affiliation(s)
- Sol Epstein
- Doylestown Hospital, Doylestown, Pennsylvania, USA
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31
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Ho AYY, Kung AWC. Efficacy and Tolerability of Alendronate Once Weekly in Asian Postmenopausal Osteoporotic Women. Ann Pharmacother 2005; 39:1428-33. [PMID: 16076919 DOI: 10.1345/aph.1e580] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND: Osteoporosis has become a major health problem worldwide, and the incidence is rising in Asian countries. The aminobisphosphonates are potent inhibitors of bone resorption and are currently the mainstay of treatment for postmenopausal osteoporosis. Dosing frequency will likely affect tolerability and adherence to treatment. OBJECTIVE: To assess the tolerability and efficacy of a once-weekly aminobisphosphonate preparation in improving bone mineral density (BMD) and bone turnover markers in osteoporotic Asian women. METHODS: Chinese postmenopausal women with osteoporosis were randomized to receive either alendronate 70 mg once weekly plus calcium carbonate 500 mg daily (n = 29%) or calcium carbonate 500 mg daily (n = 29%) for one year. BMD was measured by dual energy X-ray absorptiometry. Markers of bone formation and bone resorption included plasma total alkaline phosphatase and urine N-telopeptides. RESULTS: Treatment with alendronate 70 mg once weekly for one year resulted in significant BMD improvement of 6.1% at the spine, 5.6% at the femoral neck, and 3.5% at the total hip. There was no significant change in the BMD values in the calcium group (spine 1.4%, femoral neck −0.2%, total hip 0%). The BMD response in the alendronate group was significantly different from that in the calcium group at all time points, and the difference was detectable as early as after 3 months of treatment (ANOVA p < 0.001%). The changes remained significant after adjusting for age, age at menarche, and years since menopause (p < 0.001%). Similarly, the reductions in bone markers at 12 months were significantly different between the 2 treatment groups (plasma total alkaline phosphatase: alendronate 27.9%, calcium 5.4%; urine N-telopeptide: alendronate 55.6%, calcium 11.2%; both p < 0.001%). The alendronate regimen was well tolerated, without significant adverse events. CONCLUSIONS: The results confirmed that once-weekly alendronate was efficacious in increasing BMD and reducing bone turnover and was well tolerated in Asian women.
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Affiliation(s)
- Andrew Y Y Ho
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong, PR China
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Cremers SCLM, Pillai G, Papapoulos SE. Pharmacokinetics/pharmacodynamics of bisphosphonates: use for optimisation of intermittent therapy for osteoporosis. Clin Pharmacokinet 2005; 44:551-70. [PMID: 15932344 DOI: 10.2165/00003088-200544060-00001] [Citation(s) in RCA: 149] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Bisphosphonates suppress osteoclast-mediated bone resorption and are widely used in the management of osteoporosis. Daily oral administration of alendronic acid and risedronic acid have been shown to reduce the risk of vertebral and non-vertebral fractures. Once-weekly regimens with these bisphosphonates are pharmacologically equivalent to daily regimens. Regimens with treatment-free intervals longer than 1 week present an attractive therapeutic option as they may offer additional patient convenience and long-term adherence to treatment. However, until recently, such regimens, usually referred to as intermittent or cyclical, have not shown any convincing antifracture efficacy in clinical trials, probably because of the empirical manner in which the design of these regimens has been approached. Investigation of pharmacokinetics/pharmacodynamics of bisphosphonates may help in the design of effective intermittent dosage regimens. Bisphosphonates are poorly absorbed from the gastrointestinal tract and about 50% of the absorbed drug is taken up selectively by the skeleton, while the rest is excreted unaltered in urine. Bisphosphonates exert their action at the bone surface, where they are taken up by the osteoclasts during bone resorption. Therefore, when describing the pharmacokinetics of bisphosphonates in relation to the pharmacodynamics, the amount of bisphosphonate at the skeleton should be accounted for. Few of the reported clinical pharmacokinetic studies addressed this issue. This is partly due to the absence of study design elements to account for skeletal binding of the drugs. Pharmacokinetic studies have also been hampered by technical difficulties in determining the concentration of bisphosphonates in serum and urine. Moreover, most clinical pharmacokinetic (but also pharmacokinetic/pharmacodynamic) studies have primarily used noncompartmental analysis, leaving out the distinct advantages of modelling and simulation techniques. Clinically, the primary action of bisphosphonates can be assessed by the measurement of biochemical markers of bone resorption. Recent studies indicate that the pattern of these markers during bisphosphonate treatment may be predictive of antifracture efficacy; however, only limited data are available for the development of pharmacokinetic/pharmacodynamic models that are able to predict the response of these markers to different treatment regimens with bisphosphonates. Recently, pharmacokinetic/pharmacodynamic models for response to bisphosphonates have been described and, at present, some of them are being used in the design of bisphosphonate regimens with long drug-free intervals.
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Affiliation(s)
- Serge C L M Cremers
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, The Netherlands.
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Chapurlat RD. Clinical Pharmacology of Potent New Bisphosphonates for Postmenopausal Osteoporosis. ACTA ACUST UNITED AC 2005; 4:115-25. [PMID: 15783248 DOI: 10.2165/00024677-200504020-00005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Bisphosphonates are potent inhibitors of bone resorption, used in most bone diseases associated with high bone resorption levels. Several bisphosphonates, developed to prevent and treat postmenopausal osteoporosis, increase bone mineral density and decrease biochemical markers of bone turnover, and more importantly, reduce fracture risk. Alendronate and risedronate have proven their efficacy to reduce vertebral and hip fracture risk among postmenopausal osteoporotic women, using daily regimens. Weekly intermittent schedules, however, are now most commonly prescribed, because they have shown pharmacologic equivalence to the daily regimen. Ibandronate has been the first bisphosphonate to demonstrate vertebral fracture risk reduction using an intermittent regimen. Studies using ibandronate as intravenous injections every 3 months are under way. Zoledronic acid may also be an attractive option for the treatment of postmenopausal osteoporosis if a large ongoing trial proves that a single annual injection of this compound allows osteoporotic fracture risk reduction.
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Affiliation(s)
- Roland D Chapurlat
- Department of Rheumatology and Bone Diseases and INSERM U 403, Hôpital E Herriot, Lyon, France.
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Uchida S, Taniguchi T, Shimizu T, Kakikawa T, Okuyama K, Okaniwa M, Arizono H, Nagata K, Santora AC, Shiraki M, Fukunaga M, Tomomitsu T, Ohashi Y, Nakamura T. Therapeutic effects of alendronate 35 mg once weekly and 5 mg once daily in Japanese patients with osteoporosis: a double-blind, randomized study. J Bone Miner Metab 2005; 23:382-8. [PMID: 16133688 DOI: 10.1007/s00774-005-0616-5] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2004] [Accepted: 04/05/2005] [Indexed: 11/30/2022]
Abstract
The efficacy and safety of treatment with oral alendronate (ALN) 35 mg once weekly for 52 weeks were compared with those of ALN 5 mg once daily in a double-blind, randomized, multicenter study of Japanese patients with involutional osteoporosis. The primary efficacy end point was the percent change from baseline in the lumbar spine (L1-L4) bone mineral density (BMD) after 52 weeks of treatment. In this study, 328 patients were randomized to ALN 5 mg once daily (160 patients) or ALN 35 mg once weekly (168 patients). The adjusted mean percent change from baseline in lumbar spine (L1-L4) BMD after 52 weeks of treatment was 5.8% and 6.4% in the once-daily group and the once-weekly group, respectively (both P < 0.001). The 95% confidence interval for the difference in spine BMD change between the two treatment groups was -0.31% to 1.48%, indicating that the two regimens were therapeutically equivalent, since the confidence interval fell entirely within the predefined equivalence criterion (+/-1.5%). The time course of the spine BMD increase was also similar for both regimens. Regarding total hip BMD, mean changes from baseline at 52 weeks were 2.8% and 3.0% in the once-daily group and the once-weekly group, respectively. In addition, the bone markers (urinary deoxypyridinoline, urinary type-I collagen N-telopeptides, and serum bone-specific alkaline phosphatase) were reduced to a similar level by either treatment throughout the treatment period. The tolerability and safety profiles were also similar between the treatment groups. Taken together, we conclude that the efficacy and safety of the ALN 35-mg once-weekly regimen are therapeutically equivalent to those of the ALN 5-mg once-daily regimen.
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Affiliation(s)
- Shinji Uchida
- Clinical Development Institute, Banyu Pharmaceutical Co., Ltd., 5-1 Nihombashi-kabutocho, Chuo-ku, Tokyo 103-0026, Japan.
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Chesnut CH, Skag A, Christiansen C, Recker R, Stakkestad JA, Hoiseth A, Felsenberg D, Huss H, Gilbride J, Schimmer RC, Delmas PD. Effects of oral ibandronate administered daily or intermittently on fracture risk in postmenopausal osteoporosis. J Bone Miner Res 2004; 19:1241-9. [PMID: 15231010 DOI: 10.1359/jbmr.040325] [Citation(s) in RCA: 745] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2003] [Revised: 03/03/2004] [Accepted: 04/05/2004] [Indexed: 11/18/2022]
Abstract
UNLABELLED Oral daily (2.5 mg) and intermittent ibandronate (between-dose interval of >2 months), delivering a similar cumulative exposure, were evaluated in 2946 osteoporotic women with prevalent vertebral fracture. Significant reduction in incident vertebral fracture risk by 62% and 50%, respectively, was shown after 3 years. This is the first study to prospectively show antifracture efficacy for the intermittent administration of a bisphosphonate. INTRODUCTION Bisphosphonates are important therapeutics in postmenopausal osteoporosis. However, they are currently associated with stringent dosing instructions that may impair patient compliance and hence therapeutic efficacy. Less frequent, intermittent administration may help to overcome these deficiencies. This study assessed the efficacy and safety of oral ibandronate administered either daily or intermittently with a dose-free interval of >2 months. MATERIALS AND METHODS This randomized, double-blind, placebo-controlled, parallel-group study enrolled 2946 postmenopausal women with a BMD T score < or = -2.0 at the lumbar spine in at least one vertebra (L1-L4) and one to four prevalent vertebral fractures (T4-L4). Patients received placebo or oral ibandronate administered either daily (2.5 mg) or intermittently (20 mg every other day for 12 doses every 3 months). RESULTS AND CONCLUSIONS After 3 years, the rate of new vertebral fractures was significantly reduced in patients receiving oral daily (4.7%) and intermittent ibandronate (4.9%), relative to placebo (9.6%). Thus, daily and intermittent oral ibandronate significantly reduced the risk of new morphometric vertebral fractures by 62% (p = 0.0001) and 50% (p = 0.0006), respectively, versus placebo. Both treatment groups also produced a statistically significant relative risk reduction in clinical vertebral fractures (49% and 48% for daily and intermittent ibandronate, respectively). Significant and progressive increases in lumbar spine (6.5%, 5.7%, and 1.3% for daily ibandronate, intermittent ibandronate, and placebo, respectively, at 3 years) and hip BMD, normalization of bone turnover, and significantly less height loss than in the placebo group were also observed for both ibandronate regimens. The overall population was at low risk for osteoporotic fractures. Consequently, the incidence of nonvertebral fractures was similar between the ibandronate and placebo groups after 3 years (9.1%, 8.9%, and 8.2% in the daily, intermittent, and placebo groups, respectively; difference between arms not significant). However, findings from a posthoc analysis showed that the daily regimen reduces the risk of nonvertebral fractures (69%; p = 0.012) in a higher-risk subgroup (femoral neck BMD T score < -3.0). In addition, oral ibandronate was well tolerated. Oral ibandronate, whether administered daily or intermittently with an extended between-dose interval of >2 months, is highly effective in reducing the incidence of osteoporotic fractures in postmenopausal women. This is the first time that significant fracture efficacy has been prospectively shown with an intermittently administered bisphosphonate in the overall study population of a randomized, controlled clinical trial. Thus, oral ibandronate holds promise as an effective and convenient alternative to current bisphosphonate therapies.
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Affiliation(s)
- Charles H Chesnut
- Osteoporosis Research Group, University of Washington, Seattle, Washington 98185, USA.
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Kroth PJ, Murray MD, McDonald CJ. Undertreatment of osteoporosis in women, based on detection of vertebral compression fractures on chest radiography. ACTA ACUST UNITED AC 2004; 2:112-8. [PMID: 15555487 DOI: 10.1016/s1543-5946(04)90016-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2004] [Indexed: 11/20/2022]
Abstract
BACKGROUND Fractures attributable to ostcoporosis are responsible for preventable suffering and health care costs. Until they experience a fracture, many older adults, particularly women, are unaware that they have osteoporosis. Although radiographs taken for reasons other than evaluating the possibility of osteoporosis may suggest the presence of fracture, such fractures often go undetected and effective treatments are not implemented. OBJECTIVE The goal of this study was to determine the adequacy of treatment of osteoporotic vertebral compression fractures in middle-aged and older women in an internal medicine clinic, as ascertained by reports of chest radiography. The hypothesis was that patients having chest radiographs with observable vertebral compression fractures often did not receive adequate treatment. METHODS This was a retrospective, cross-sectional study conducted at a general internal medicine clinic at a university-affiliated county hospital. The records of an academic internal medicine practice were searched to identify women aged >or=40 years with radiologic evidence of vertebral compression fractures during the period from June 1, 1992, through May 31, 2002. Electronic prescription records were then searched to determine whether patients had received a prescription for a medication for the treatment of osteoporosis. An analysis also was conducted to describe the frequency distribution of various medications for the treatment of osteoporosis. RESULTS One hundred thirteen women were identified who met the study criteria. Their mean (SD) age was 68.1 (21.9) years. Fifty-six (50%) of these women received pharmacologic treatment for osteoporosis. The most commonly prescribed medications were estrogens (35%), calcitonin (16%), and bisphosphonates (12%). CONCLUSIONS No more than half of patients identified as having a vertebral compression fracture on chest radiography received even 1 prescription for the treatment of osteoporosis. Because this study did not examine adherence or long-term medication use, the proportion of women who received adequate osteoporosis therapy was probably much less than half. Physicians should be alert to the possible presence of vertebral compression fractures and take a more aggressive approach to treatment when a fracture is present.
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Affiliation(s)
- Philip J Kroth
- Regenstrief Institute, Inc., Indianapolis, IN 46202, USA
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Eisman JA, Rizzoli R, Roman-Ivorra J, Lipschitz S, Verbruggen N, Gaines KA, Melton ME. Upper gastrointestinal and overall tolerability of alendronate once weekly in patients with osteoporosis: results of a randomized, double-blind, placebo-controlled study. Curr Med Res Opin 2004; 20:699-705. [PMID: 15140336 DOI: 10.1185/030079904125003548] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To compare the upper gastrointestinal (GI) and overall tolerability profiles of alendronate 70 mg once weekly with placebo. RESEARCH DESIGN AND METHODS This 12-week international, multi-center, randomized, double-blind, placebo-controlled trial included 449 postmenopausal women and men with osteoporosis at 44 sites in 19 countries in Europe, the Americas, Africa, and Asia-Pacific. Subjects were randomized to alendronate 70 mg once weekly or matching placebo in a 1:1 ratio. MAIN OUTCOME MEASURES The safety and tolerability of weekly alendronate and placebo were captured as clinical and laboratory adverse events. The primary endpoint was upper GI tolerability based on the incidence of upper GI tract adverse events. Secondary endpoints included the percentage of subjects who discontinued therapy due to a drug-related upper GI adverse event. Change from baseline in bone turnover as measured by the urinary N-telopeptide-collagen crosslinks corrected for creatinine (NTx/Cr) was assessed at 12 weeks as an indicator of efficacy. RESULTS The percentages of subjects reporting an upper GI tract adverse event in the alendronate 70 mg once weekly group (9.8%) and the placebo group (9.4%) were similar. The risk difference between the two treatment groups (alendronate minus placebo) was 0.4% [95% confidence interval (CI), -5.1%, 5.9%]. Percentages of subjects who discontinued due to a drug-related upper GI adverse event were also similar (alendronate 2.7%; placebo 2.2%; risk difference 0.4%, 95% CI, -2.4, 3.3). The overall tolerability profile of alendronate 70 mg once weekly, as measured by the percentage 8.0% (95% CI, 1.4%, 15.0%) increase in the of subjects reporting any adverse event, was similar to that of placebo (risk difference 2.1%, 95% CI -6.9, 11.0). There was a significant 43.3% (95% CI, -47.9%, -38.3%) decrease from baseline in urinary NTx/Cr in the alendronate group compared with an placebo group at Week 12. CONCLUSION Alendronate 70 mg administered once weekly to women and men with osteoporosis has an upper GI and overall tolerability profile similar to that of placebo.
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Affiliation(s)
- J A Eisman
- Garvan Institute of Medical Research, St. Vincent's Hospital, Sydney, Australia
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Astrand J, Aspenberg P. Topical, single dose bisphosphonate treatment reduced bone resorption in a rat model for prosthetic loosening. J Orthop Res 2004; 22:244-9. [PMID: 15013081 DOI: 10.1016/j.orthres.2003.08.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2002] [Accepted: 08/11/2003] [Indexed: 02/04/2023]
Abstract
Fluid pressure, instability or particles have been suggested to cause peri-prosthetic bone resorption. High intracapsular pressures have been reported in hip joints with loose prosthetic components, and oscillating fluid pressure has been shown to cause dramatic bone resorption in animal models. Resorption can be reduced by systemic bisphosphonate treatment in rat models with oscillating fluid pressure, but this has required higher doses than needed to inhibit normal remodelling. Bisphosphonates have high affinity to bone mineral. Topical application of the drug is therefore feasible. We used a previously described rat model where oscillating fluid pressure causes bone resorption. Before pressurization, a 1 mg/ml solution of alendronate was applied onto the bone surface for 1 min, after which excess bisphosphonate was rinsed away. Bone resorption was measured on histological slides as soft tissue area at the interface. Rats treated with topical alendronate had soft tissue areas reduced by half. Topical bisphosphonate treatment before cementing a joint implant could possibly reduce the risk of later loosening.
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Affiliation(s)
- Jörgen Astrand
- Department of Orthopaedics, Lund University Hospital, S-22185 Lund, Sweden.
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Farese JP, Ashton J, Milner R, Ambrose LL, Van Gilder J. THE EFFECT OF THE BISPHOSPHONATE ALENDRONATE ON VIABILITY OF CANINE OSTEOSARCOMA CELLS IN VITRO. ACTA ACUST UNITED AC 2004; 40:113-7. [PMID: 15311969 DOI: 10.1290/1543-706x(2004)040<0113:teotba>2.0.co;2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The objective of this study was to determine the effect of alendronate on the viability of canine osteosarcoma cells and nonneoplastic canine cells. The sample population was composed of canine osteosarcoma tumor cells. Osteosarcoma cells and canine fibroblasts were maintained in culture under standard conditions. The MTT assay for cell viability was performed after 24, 48, and 72 h of incubation with alendronate (0.001 to 1000 microM) or no drug (control). Plates were set up so that each concentration and the control had a sample number of 8. The optical density (OD) of each well was measured at 540 nm using an enzyme-linked immunosorbent assay microplate reader. The percent viability was determined for each concentration and for each incubation time. After 24 h of incubation of POS (parent osteosarcoma) and HMPOS cells with alendronate, there was no significant difference in mean OD at any drug concentration when compared with control samples. A significant concentration- and time-dependent reduction in mean OD of osteosarcoma cells was observed after 48 and 72 h of incubation, with alendronate concentrations ranging from 10 to 1000 microM. The lowest percent cell viability observed in treated cells was 35%. Conversely, alendronate did not significantly affect mean OD in fibroblasts, and the lowest percent cell viability observed was 76%. Our data indicate that alendronate may have the potential to inhibit canine osteosarcoma tumor growth. It will be important to determine the clinical relevance of these in vitro findings. If similar findings are observed in vivo, use of alendronate may also be indicated as an adjuvant to existing chemotherapeutic protocols.
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Affiliation(s)
- James P Farese
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA.
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Abstract
Elevating women from the nadir of ovarian hypofunction has been a major driving force in developing hormonal strategies for the management of menopause. As indicated by recent evidence, however, this may have resulted in unacceptable morbidity in several women. Likewise, the use of menstrual cessation as the hallmark of menopause may have served the counterproductive effect of delaying the onset of appropriate preventive pharmacologic and non-pharmacologic strategies until the later years of life. Preventive and therapeutic strategies that target the menopausal phase of life exclusively are grossly inadequate. Unquestionably, the controversies that surround the precise health implications of menopause deal mainly with the risk of chronic disease. Health professionals are best advised to develop menopausal intervention strategies that parallel the continuum of a woman's life, beginning in adolescence and extending into later life. Preventive screening includes the following: History Relevant medical history Develop risk profile of chronic diseases (e.g., cardiovascular disease, cancer, osteoporosis) Dietary history Sexual history Physical exercise history Medication history Physical examination Body mass index evaluation Breast examination and instruction in examination technique Bimanual pelvic examination Nutritional assessment Investigation Cholesterol levels Stool for occult blood Thyroid function tests Papanicolaou smears HIV testing if positive risk factors Psychosocial evaluation Family relationships Job satisfaction Sexuality High-risk social behaviors Review perception of self-health Annual health examination is encouraged in all perimenopausal women. Additionally, preventive screening should be instituted, as appropriate, in all women of reproductive age.
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Affiliation(s)
- Margaret-Mary G Wilson
- Division of Geriatric Medicine, Saint Louis University Health Sciences Center, GRECC, Veterans' Administration Medical Center, Jefferson Barracks, St. Louis, MO 63104, USA.
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Tankó LB, Felsenberg D, Czerwiński E, Burdeska A, Jonkanski I, Hughes C, Christiansen C. Oral weekly ibandronate prevents bone loss in postmenopausal women. J Intern Med 2003; 254:159-67. [PMID: 12859697 DOI: 10.1046/j.1365-2796.2003.01174.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVES To investigate the efficacy, safety, and dose-response of once-weekly oral ibandronate in the prevention of postmenopausal bone loss. DESIGN This was a multi-centre, placebo-controlled, double-blind, randomized, 24-month phase II/III dose-finding study. SETTING Primary care units in 14 osteoporosis centres. SUBJECTS A total of 630 women were stratified into four strata according to time since menopause (TSM, 1-3 vs. >3 years) and baseline bone mineral density (BMD; normal: T-score > or =1 vs. osteopenic: -2.5 < or = T-score < or = 1) of the lumbar spine. INTERVENTIONS Within each stratum women were further randomized to receive once-weekly ibandronate (5, 10, or 20 mg week-1) or placebo for 24 months. MAIN OUTCOME MEASURES Efficacy parameters were the relative changes from baseline in spine (L1-4) and hip BMD, and biochemical markers of bone turnover (serum and urinary C-telopeptide of collagen type I (CTx), osteocalcin, and alkaline phosphatase) measured by dual energy X-ray absorptiometry and enzyme immunoassays, respectively. RESULTS Once-weekly therapy with ibandronate induced dose-dependent increases in spine and hip BMD. At month 24, differences between the relative changes in spine and hip BMD induced by 20 mg ibandronate and placebo was 4.0 and 2.7%, respectively. Similar or more pronounced differences were seen in osteopenic women of TSM 1-3 years (5.3 and 3.5%) and of TSM >3 years (3.5 and 2.9%), respectively. A dose-dependent suppression of all biochemical markers of bone turnover was observed with significant decreases in the 20 mg dose groups of all strata at month 24. The overall safety results indicated that once-weekly oral ibandronate was well-tolerated at all three doses. CONCLUSION Once-weekly oral therapy with 20 mg ibandronate provides an effective and safe therapy for the prevention of postmenopausal bone loss.
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Affiliation(s)
- L B Tankó
- Center for Clinical and Basic Research A/S, Ballerup and Vejle, Denmark
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Tankó LB, Mouritzen U, Lehmann HJ, Warming L, Moelgaard A, Christgau S, Qvist P, Baumann M, Wieczorek L, Hoyle N, Christiansen C. Oral ibandronate: changes in markers of bone turnover during adequately dosed continuous and weekly therapy and during different suboptimally dosed treatment regimens. Bone 2003; 32:687-93. [PMID: 12810176 DOI: 10.1016/s8756-3282(03)00091-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aims of the present study were to investigate how changes in the cumulative dose and the frequency of dosing influence the short-term antiresorptive efficacy of oral ibandronate treatment and whether serial measurements of bone markers could provide a useful diagnostic tool for the revelation of noncompliance to established treatments with antiresorptive drugs. Study participants were 200 healthy women 50-70 years old (mean 63.1 years) with a lumbar spine BMD t-score of -1 to -5. Women were randomly allocated to receive treatment with oral ibandronate according to one of the following eight dosing regimes: (1) 2.5 mg daily for 84 days; (2) 20 mg weekly for 84 days; (3) 2.5 mg daily for 28 days + no treatment for 56 days; (4) 2.5 mg daily for 28 days + 2.5 mg weekly for 56 days; (5) 2.5 mg daily for 28 days + 2.5 mg three times weekly for 56 days; (6) 2.5 mg daily for 14 days + 2.5 mg three times weekly for 56 days; (7) 2.5 mg three times weekly for 84 days; (8) no treatment for 168 days. Study parameters were the serum concentration of the C-terminal telopeptide of collagen type I (s-CTX, resorption marker) and N-MID osteocalcin (formation marker) measured by enzyme-linked immunosorbent assay. Oral treatment with ibandronate 20 mg weekly (cumulative dose 240 mg) resulted in greater final inhibition in s-CTX and area under the curve (AUC) compared to the 2.5 mg daily treatment (cumulative dose 210 mg), indicating that as long as optimal doses are administered the frequency of dosing has secondary importance for overall efficacy. When the cumulative dose was 130 mg or less, the final degree of inhibition was still the function of the cumulative dose, but the overall efficacy estimated by the AUC was also under the influence of the frequency of dosing. These observations suggest that serial measurements of s-CTX may provide a useful diagnostic tool for the early revelation of suboptimal dosing or noncompliance to already optimized therapies with antiresorptive agents.
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Affiliation(s)
- L B Tankó
- Center for Clinical & Basic Research A/S, Ballerup Byvej 222, 2750 Ballerup, Denmark.
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Therapeutic Equivalence of Alendronate 35 Milligrams Once Weekly and 5 Milligrams Daily in the Prevention of Postmenopausal Osteoporosis. Obstet Gynecol 2003. [DOI: 10.1097/00006250-200304000-00017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Delaney MF, Hurwitz S, Shaw J, LeBoff MS. Bone density changes with once weekly risedronate in postmenopausal women. J Clin Densitom 2003; 6:45-50. [PMID: 12665701 DOI: 10.1385/jcd:6:1:45] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Risedronate 5 mg daily is approved by the Food and Drug Administration to treat postmenopausal osteoporosis. Gastrointestinal (GI) symptoms are common with daily bisphosphonates, but recent studies show that once weekly treatment may be better tolerated. Risedronate 30 mg is approved to treat Paget s disease of bone. In this retrospective study, we assessed the GI tolerability of 30 mg of risedronate once weekly and evaluated the effect on bone mineral density (BMD) in a subset of women. Review of patients treated in our osteoporosis clinic identified 150 postmenopausal women with low BMD treated with 30 mg of risedronate once weekly, between February 1998 and March 2001. Baseline GI symptoms or previous intolerance of bisphosphonates was present in 32 patients. An additional antiresorptive treatment was continued with risedronate in 50% of these patients (estrogen, raloxifene, or calcitonin). Risedronate 30 mg was taken once weekly with vitamin D 400 iu daily and 1200 mg of calcium daily. Patient age ranged from 46 to 86 yr. Baseline and followup BMD data were available in 36 patients. Of the 32 patients with baseline GI symptoms or previous intolerance of a bisphosphonate, 1 developed GI symptoms. In those patients with baseline and follow-up BMD results (n = 36), BMD increased 1.9% (p = 0.02) at the trochanter and 2.1% (p = 0.001) at the total hip. In conclusion 30 mg of risedronate once weekly increased BMD at the trochanter and total hip (p < 0.05). This dosage was well tolerated with a low incidence of GI side effects.
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Affiliation(s)
- Miriam F Delaney
- Endocrine-Hypertension Division, Brigham and Women's Hospital, Boston, MA 02115, USA.
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Schimmer RC, Bauss F. Effect of daily and intermittent use of ibandronate on bone mass and bone turnover in postmenopausal osteoporosis: a review of three phase II studies. Clin Ther 2003; 25:19-34. [PMID: 12637110 DOI: 10.1016/s0149-2918(03)90005-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Oral bisphosphonates are well established for the treatment and prevention of postmenopausal osteoporosis; however, they are poorly absorbed from the gastrointestinal (GI) tract and have been associated with GI adverse events. Thus, current dosing guidelines recommend that the patient not eat or lie down for at least 30 minutes after taking oral bisphosphonates, a requirement that is inconvenient and may be associated with reduced compliance. The drawbacks of these dosing requirements may be overcome either by reducing dosing frequency or by using alternative routes of administration. OBJECTIVE Ibandronate is a potent nitrogen-containing bisphosphonate that can be given orally or IV, daily or intermittently, with a between-dose interval of up to 3 months. This article presents the results of published Phase II trials of the efficacy and safety profile of oral and IV ibandronate administered daily or intermittently to postmenopausal women with low bone mass. METHODS MEDLINE was searched through January 2002 to identify all published Phase II clinical studies of oral and IV ibandronate in the treatment of post-menopausal osteoporosis. RESULTS In the 3 Phase II studies identified, marked reductions in biochemical markers of bone resorption (50%-70%) and bone formation (40%-50%) were seen to a similar and statistically significant extent with oral ibandronate 2.5 mg/d (P<0.001), oral ibandronate 20 mg QOD given for 12 doses at the start of each 3-monthly period (P<0.001), and injections of ibandronate 2 mg IV given every 3 months (P<0.01). All treatment regimens produced comparable significant increases in bone mineral density at the lumbar spine (P<0.01) and hip (P<0.05). Ibandronate was well tolerated when administered both orally and as an IV injection. CONCLUSIONS In these Phase II studies, oral or IV ibandronate, administered continuously or intermittently, reduced markers of bone turnover, significantly increased bone mineral density, and was well tolerated in the treatment of osteoporosis in postmenopausal women. The data from these studies provided the rationale for further investigation of ibandronate in larger longer-term Phase III studies evaluating its potential as an efficacious and flexible alternative to existing bisphosphonate regimens.
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Affiliation(s)
- Ralph C Schimmer
- F. Hoffmann-La Roche Ltd., Pharmaceuticals Division, Basel, Switzerland.
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48
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Simon JA, Lewiecki EM, Smith ME, Petruschke RA, Wang L, Palmisano JJ. Patient preference for once-weekly alendronate 70 mg versus once-daily alendronate 10 mg: a multicenter, randomized, open-label, crossover study. Clin Ther 2002; 24:1871-86. [PMID: 12501880 DOI: 10.1016/s0149-2918(02)80085-6] [Citation(s) in RCA: 142] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Alendronate, an oral bisphosphonate, is available for the treatment of osteoporosis in a 70-mg once-weekly and a 10-mg once-daily formulation. OBJECTIVES This study aimed to determine patient preference for once-weekly versus once-daily dosing with alendronate, and to determine which treatment regimen the patients believed was more convenient and would be easier to comply with for a long period. METHODS This was a multicenter, randomized, open-label, preference study in which postmenopausal women with osteoporosis were enrolled to receive 9 weeks of treatment in crossover fashion (4 weeks with each study regimen separated by a 1-week washout period). The study regimens included once-weekly alendronate 70 mg and once-daily alendronate 10 mg. The primary and secondary end points were assessed with a questionnaire completed by the patient. Adverse events (AEs) were recorded to assess patient tolerability of the study medications. RESULTS A total of 324 patients met the eligibility requirements; 288 were randomized to treatment, 287 (mean age, 64.8 years) received treatment, 272 completed the questionnaire, and 266 completed the study. Of the patients who completed the questionnaire, 235 patients preferred the 70-mg once-weekly dosing regimen compared with the 10-mg once-daily regimen (86.4% vs 9.2%; P < 0.001). Most patients also believed that once-weekly dosing was more convenient than once-daily dosing (89.0% vs 7.7%; P < 0.001) and would allow them to achieve better long-term compliance (87.5% vs 8.5%; P < 0.001). Clinical AEs were reported in 30.7% of patients treated with once-weekly alendronate and 30% of patients treated with once-daily alendronate, with no significant differences between treatments. CONCLUSION When once-weekly alendronate 70 mg was compared with once-daily alendronate 10 mg in this study, 70-mg once-weekly alendronate was the preferred dosing regimen.
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Affiliation(s)
- James A Simon
- George Washington University School of Medicine, Washington, DC, USA
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Rizzoli R, Greenspan SL, Bone G, Schnitzer TJ, Watts NB, Adami S, Foldes AJ, Roux C, Levine MA, Uebelhart B, Santora AC, Kaur A, Peverly CA, Orloff JJ. Two-year results of once-weekly administration of alendronate 70 mg for the treatment of postmenopausal osteoporosis. J Bone Miner Res 2002; 17:1988-96. [PMID: 12412806 DOI: 10.1359/jbmr.2002.17.11.1988] [Citation(s) in RCA: 139] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The aim of this study was to provide confirmation that once-weekly dosing with 70 mg of alendronate (seven times the daily oral dose) and twice-weekly dosing with 35 mg is equivalent to the 10-mg once-daily regimen and to gain more extensive safety experience with this new dosing regimen. Twelve hundred fifty-eight postmenopausal women (aged 42-95 years) with osteoporosis (bone mineral density [BMD] of either lumbar spine or femoral neck at least 2.5 SDs below peak young adult mean or prior vertebral or hip fracture) were assigned to receive oral once-weekly alendronate, 70 mg (n = 519); twice-weekly alendronate, 35 mg (n = 369); or daily alendronate 10 mg (n = 370) for a total of 2 years of double-blind experience. Mean BMD increases from baseline (95% CI) at 24 months in the once-weekly, twice-weekly, and daily treatment groups, respectively, were 6.8% (6.4, 7.3), 7.0% (6.6,7.5), and 7.4% (6.9,7.8) at the lumbar spine and 4.1% (3.8,4.5), 4.3% (3.9,4.7), and 4.3% (3.9,4.7) at the total hip. These increases in BMD as well as the BMD increases at the femoral neck, trochanter, and total body and the reductions of biochemical markers of bone resorption (urinary cross-linked N-telopeptides of type I collagen [NTx]) and bone formation (serum bone-specific alkaline phosphatase [BSAP]) were similar for the three dosing regimens. All treatment regimens were well tolerated with a similar incidence of upper gastrointestinal (GI) adverse experiences. The incidence rates of clinical fractures, captured as adverse experiences, were similar among the groups. The 2-year results confirm the conclusion reached after 1 year that once-weekly alendronate is therapeutically equivalent to daily dosing, providing patients with a more convenient dosing option that may potentially enhance adherence to therapy.
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Affiliation(s)
- R Rizzoli
- Department of Internal Medicine, Hõpital Cantonal, Geneva, Switzerland
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Greenspan S, Field-Munves E, Tonino R, Smith M, Petruschke R, Wang L, Yates J, de Papp AE, Palmisano J. Tolerability of once-weekly alendronate in patients with osteoporosis: a randomized, double-blind, placebo-controlled study. Mayo Clin Proc 2002; 77:1044-52. [PMID: 12374248 DOI: 10.4065/77.10.1044] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To compare the upper gastrointestinal (GI) tract tolerability of once-weekly oral alendronate, 70 mg, and placebo. PATIENTS AND METHODS This was a 12-week multicenter, randomized, double-blind, placebo-controlled study. The first patient initiated treatment on June 5, 2000, and the last patient completed treatment on March 1, 2001. The study enrolled 450 postmenopausal women and men with osteoporosis (224 took alendronate, 226 took placebo) who were ambulatory and community dwelling at 48 outpatient study centers in the United States. By design, approximately half of the patients were naive to bisphosphonates. The primary end point was upper GI tract tolerability based on the incidence of any upper GI tract adverse events. Secondary end points included the number of discontinuations due to drug-related upper GI tract adverse events and the change from baseline in bone resorption, assessed by the urinary N-telopeptide-creatinine ratio at 12 weeks. A subgroup analysis of the primary and secondary end points was performed on the patients stratified by prior bisphosphonate use. The safety and tolerability of the weekly alendronate and placebo regimens were captured as clinical and laboratory adverse events. RESULTS A total of 11% of the alendronate patients and 13% of the placebo patients reported an upper GI tract adverse event. Discontinuations due to drug-related upper GI tract adverse events occurred in 3% of alendronate patients and 1% of placebo patients. The differences between the treatment groups for the primary and secondary end points were not significant. For the primary end point, the upper limit of the 95% confidence interval of the difference was well within the prespecified 14% comparability bound (-2.2%; 95% confidence interval, -8.3% to 3.9%). The overall incidence of upper GI tract adverse events was lower in the subgroup of patients with prior bisphosphonate exposure (8%) than in those who were bisphosphonate naive (16%). However, regardless of prior bisphosphonate exposure, the incidence of upper GI tract adverse events was similar between the alendronate and placebo patients. The urinary N-telopeptide-creatinine ratio showed a significant decrease in the alendronate patients (72% of baseline, P<.001) compared with a slight increase in the placebo patients (106% of baseline) at week 12. CONCLUSION In this 3-month study, the incidence of upper GI tract adverse events in patients treated with once-weekly alendronate, 70 mg, was comparable to that with placebo.
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Affiliation(s)
- Susan Greenspan
- Department of Medicine, University of Texas Southwestern Medical School, Dallas 75216, USA
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