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Yu EW, Tsourdi E, Clarke BL, Bauer DC, Drake MT. Osteoporosis Management in the Era of COVID-19. J Bone Miner Res 2020; 35:1009-1013. [PMID: 32406536 PMCID: PMC7273005 DOI: 10.1002/jbmr.4049] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/06/2020] [Accepted: 05/08/2020] [Indexed: 01/22/2023]
Abstract
Osteoporosis is a chronic condition that reflects reduced bone strength and an associated increased risk for fracture. As a chronic condition, osteoporosis generally requires sustained medical intervention(s) to limit the risks for additional bone loss, compromise of skeletal integrity, and fracture occurrence. Further complicating this issue is the fact that the abrupt cessation of some therapies can be associated with an increased risk for harm. It is in this context that the COVID-19 pandemic has brought unprecedented disruption to the provision of health care globally, including near universal requirements for social distancing. In this Perspective, we provide evidence, where available, regarding the general care of patients with osteoporosis in the COVID-19 era and provide clinical recommendations based primarily on expert opinion when data are absent. Particular emphasis is placed on the transition from parenteral osteoporosis therapies. It is hoped that these recommendations can be used to safely guide care for patients with osteoporosis until a return to routine clinical care standards is available. © 2020 American Society for Bone and Mineral Research.
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Affiliation(s)
- Elaine W Yu
- Endocrine Unit, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Elena Tsourdi
- Department of Medicine III, Universitätsklinikum Dresden, Dresden, Germany.,Center for Healthy Aging, Universitätsklinikum Dresden, Dresden, Germany
| | - Bart L Clarke
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, Rochester, MN, USA
| | - Douglas C Bauer
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA.,Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA
| | - Matthew T Drake
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, Rochester, MN, USA.,Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
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Zekavat OR, Bordbar M, Haghpanah S, Saki F, Bazrafshan A, Bozorgi H. Comparative effectiveness of alendronate and zoledronic acid on bone mass improvement in transfusion-dependent thalassemia patients. J Bone Miner Metab 2019; 37:996-1003. [PMID: 30976915 DOI: 10.1007/s00774-019-01003-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 03/29/2019] [Indexed: 12/11/2022]
Abstract
Thalassemia, as the most prevalent genetic blood disorder, has many associated comorbidities including low bone mass. We studied the comparative effectiveness of alendronate (AL) and zoledronic acid (ZOL) on bone mass improvement in transfusion-dependent thalassemia (TDT) patients a year after treatment. Three hundred seventy-five TDT patients with low bone mass were enrolled in this study. After a year of treatment with either AL or ZOL, a second bone mineral density (BMD) test was ordered to compare the effectiveness of the two aforementioned drugs. Body mass index (BMI), physical activity, sun exposure, and biochemical laboratory data were also considered as associated factors in this study. The BMD test of both groups was almost the same at the baseline and it increased comparably after a year of treatment with AL and ZOL. However, there was a significant difference in lumbar spine BMD delta Z score between both groups of female patients. ZOL was more effective in increasing the lumbar spine BMD of female patients. The choice of bisphosphonates therapy (oral versus parenteral) should be individually selected by considering patient's preference, compliance and the physician's decision. Given the longer administration interval, and TDT patients' compliance issue, it is justified to recommend ZOL as the drug of choice for patients suffering from low bone mass.
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Affiliation(s)
- Omid Reza Zekavat
- Hematology Research Centre, Nemazee Hospital, Shiraz University of Medical Sciences, 7193635899, Shiraz, Iran
| | - Mohamadreza Bordbar
- Hematology Research Centre, Nemazee Hospital, Shiraz University of Medical Sciences, 7193635899, Shiraz, Iran
| | - Sezaneh Haghpanah
- Hematology Research Centre, Nemazee Hospital, Shiraz University of Medical Sciences, 7193635899, Shiraz, Iran
| | - Forough Saki
- Endocrinology and Metabolism Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Asghar Bazrafshan
- Hematology Research Centre, Nemazee Hospital, Shiraz University of Medical Sciences, 7193635899, Shiraz, Iran
| | - Haleh Bozorgi
- Hematology Research Centre, Nemazee Hospital, Shiraz University of Medical Sciences, 7193635899, Shiraz, Iran.
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Bilezikian JP, Lin CJF, Brown JP, Wang AT, Yin X, Ebeling PR, Fahrleitner-Pammer A, Franek E, Gilchrist N, Miller PD, Simon JA, Valter I, Zerbini CAF, Libanati C, Chines A. Long-term denosumab treatment restores cortical bone loss and reduces fracture risk at the forearm and humerus: analyses from the FREEDOM Extension cross-over group. Osteoporos Int 2019; 30:1855-1864. [PMID: 31201481 PMCID: PMC6719332 DOI: 10.1007/s00198-019-05020-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 05/15/2019] [Indexed: 12/16/2022]
Abstract
UNLABELLED Upper limb fractures (including wrist, forearm, and humerus) represent a significant burden among postmenopausal women with osteoporosis. Up to 7 years of treatment with denosumab resulted in an increase in bone mineral density and decrease in fractures in upper limb sites. INTRODUCTION Upper limb (wrist, forearm, and humerus) fractures are a significant burden in osteoporosis, associated with significant morbidity and mortality. Denosumab, a monoclonal antibody against RANK ligand, increases bone mineral density (BMD) and decreases vertebral, nonvertebral, and hip fractures. Here, we evaluated the long-term effect of denosumab treatment on upper limb fracture risk and BMD. METHODS In the FREEDOM trial, subjects were randomized 1:1 to receive every-6-month denosumab 60 mg or placebo subcutaneously for 3 years, after which all subjects could receive denosumab for up to 7 years (Extension). Among placebo subjects who completed FREEDOM and enrolled in the Extension, wrist, forearm, humerus, and upper limb fracture rates and rate ratios between different time periods (FREEDOM years 1-3, Extension years 1-3, and Extension years 4-7) were computed. BMD at the ultradistal radius, 1/3 radius, and total radius was analyzed in a subset of subjects in a BMD substudy. RESULTS This analysis included 2207 subjects (116 in the BMD substudy). Fracture rates decreased over the 7-year Extension; fracture rate ratios between Extension years 4-7 (denosumab) and FREEDOM years 1-3 (placebo) reduced significantly for the wrist (0.57), forearm (0.57), humerus (0.42), and upper limb (0.52; p < 0.05 for all). Percentage increase in BMD from Extension baseline at the ultradistal radius, 1/3 radius, and total radius was significant by Extension year 7 (p < 0.05 for all). CONCLUSIONS Long-term treatment with denosumab decreases upper limb fracture risk and increases forearm BMD, suggesting beneficial effects on both cortical and trabecular bone accruing over time.
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Affiliation(s)
- J P Bilezikian
- College of Physicians and Surgeons, Columbia University, New York, NY, USA.
| | | | - J P Brown
- CHU de Québec Research Centre and Laval University, Quebec City, QC, Canada
| | - A T Wang
- Amgen Inc., Thousand Oaks, CA, USA
| | - X Yin
- Amgen Inc., Thousand Oaks, CA, USA
| | - P R Ebeling
- Department of Medicine, Monash University, Clayton, Australia
| | | | - E Franek
- Mossakowski Medical Research Center, Polish Academy of Sciences, Warsaw, Poland
| | - N Gilchrist
- The Burwood Hospital, Christchurch, New Zealand
| | - P D Miller
- Colorado Center for Bone Research, Golden, CO, USA
| | - J A Simon
- George Washington University, Washington, DC, USA
| | - I Valter
- Center for Clinical and Basic Research, Tallinn, Estonia
| | - C A F Zerbini
- Centro Paulista de Investigação Clinica, São Paulo, Brazil
| | | | - A Chines
- Amgen Inc., Thousand Oaks, CA, USA
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Abstract
Clinical practice guidelines universally recommend bone mineral density (BMD) screening to identify osteoporosis in women aged 65 years and older. Risk assessment is recommended to guide BMD screening in postmenopausal women under age 65. Insufficient data are available to inform standard ages to start and stop BMD screening in postmenopausal women. Based on longitudinal studies of incident osteoporosis and fracture in postmenopausal women, an initial BMD test should be ordered for all women aged 65, and the frequency of re-screening should be based on age and BMD T score (more frequent testing for older age and lower T score). Although clinical practice guidelines recommend BMD screening according to risk factors for fracture in postmenopausal women under age 65, no standard approach to risk assessment exists. Minimal evidence is available to guide osteoporosis screening in men, but some experts recommend initiation of BMD screening in men at age 70.
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Affiliation(s)
- Margaret L Gourlay
- Department of Family Medicine, University of North Carolina, Aycock Building; Manning Drive, CB #7595, Chapel Hill, NC, 27599-7595, USA.
| | - Robert A Overman
- Division of Pharmaceutical Outcomes and Policy, UNC Eshelman School of Pharmacy, University of North Carolina, Kerr Hall, Room 2304, North Carolina, Chapel Hill, NC, 27599-7573, USA.
| | - Kristine E Ensrud
- Department of Medicine and Division of Epidemiology, General Internal Medicine (111-0), University of Minnesota, Minneapolis, MN, 55417, USA.
- Department of Medicine, VA Medical Center, One Veterans Drive, Minneapolis, MN, USA.
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McClung MR. Bisphosphonate therapy: how long is long enough? Osteoporos Int 2015; 26:1455-7. [PMID: 25609156 DOI: 10.1007/s00198-014-3019-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 12/22/2014] [Indexed: 10/24/2022]
Affiliation(s)
- M R McClung
- Oregon Osteoporosis Center, 25 NW 23rd Place, Suite 6 #175, Portland, OR, 97210, USA,
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Ottanelli S. Prevention and treatment of bone fragility in cancer patient. CLINICAL CASES IN MINERAL AND BONE METABOLISM : THE OFFICIAL JOURNAL OF THE ITALIAN SOCIETY OF OSTEOPOROSIS, MINERAL METABOLISM, AND SKELETAL DISEASES 2015; 12:116-29. [PMID: 26604936 PMCID: PMC4625767 DOI: 10.11138/ccmbm/2015.12.2.116] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
It is well known that fractures increase the risk of morbidity and mortality. The various mechanisms responsible for bone loss in cancer patients may have a different impact depending on the characteristics of the clinical case and correlates with the therapies used, or caused by the therapies used against cancer. Some hormonal treatments cause hypogonadism, event which contributes to the progressive loss of bone mass. This is detectable in patients with breast cancer receiving determines that estrogen-deprivation and in men with prostate cancer with therapies that determine androgen deprivation. Chemotherapy treatments used in cancer patients have reduced bone mass. In addition, low bone mass is detectable in patients with lymphoma treated with corticosteroids or radiation or alkylating agents. In premenopausal patients suffering from breast cancer, treatment with cytotoxic therapy or ablation of ovarian function, can lead to an 8% reduction in bone mineral density at the spine and 4% in the femur. With a chemotherapy regimen in CMF, the reduction of BMD is 6.5%; this bone loss is not recovered after discontinuation of therapy. Tamoxifen given for five years reduces bone remodeling and cause a 32% increase in the risk of osteoporotic fractures when used in premenopausal. After menopause, tamoxifen has a protective effect on bone mass, with a reduced risk of new fractures. Aromatase inhibitors in post-menopausal women, depending on the formulation can cause different effects on the reduction of BMD and fracture risk. We have in fact steroids, exemestane and nonsteroidal, letrozole and anastrozole. Patients at increased risk of fragility fractures should undergo preventive therapies as soon as possible after tests performed for the study of bone health. They can be used DEXA and the FRAX algorithm, which can define a secondary osteoporosis. Prevention and treatment of the increased risk of osteoporotic fracture is to maintain adequate levels of calcium and vitamin D. Bisphosphonates and denosumab are used for the management of bone remodeling and bone loss induced by cancer treatments. Bisphosphonates also have anti-tumor effects per se, which are expressed in potentially prevent the development of bone metastases. In men with metastatic prostate cancer and which is induced androgen deprivation, it is usefully used denosumab 120 mg monthly or zoledronic acid 4 mg monthly.
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Affiliation(s)
- Silva Ottanelli
- Bone Metabolic Diseases Unit, Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
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Abstract
Osteoporosis related fractures contribute to morbidity and mortality in U.S. patients, placing a heavy financial burden on society. Randomized clinical trials involving over 30,000 subjects have established bisphosphonates' efficacy in reducing the incidence of fragility fractures. However, as bisphosphonates are retained for years in the skeleton, reports of adverse events from prolonged use are surfacing in the literature, namely, esophageal cancer, atrial fibrillation, osteonecrosis of the jaw, and atypical fracture development. The concept of a drug holiday has been proposed to potentially reduce incidence of these adverse events. This review will highlight the benefits and risks of bisphosphonate therapy and discuss the extension data available from the bisphosphonate trials. As randomized clinical trial evidence is not yet available on who may qualify for drug holiday, this review will provide suggestions for clinicians on identification of possible candidates and monitoring during a bisphosphonate drug holiday.
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Affiliation(s)
- Cynthia Ro
- Division of Endocrinology, Diabetes, and Metabolism, Cedars-Sinai Medical Center, 8700 Beverly Blvd, Becker 131, Los Angeles, CA 90048, USA
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Turner S, Torode M, Climstein M, Naughton G, Greene D, Baker MK, Fiatarone Singh MA. A randomized controlled trial of whole body vibration exposure on markers of bone turnover in postmenopausal women. J Osteoporos 2011; 2011:710387. [PMID: 21772975 PMCID: PMC3135216 DOI: 10.4061/2011/710387] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Revised: 03/28/2011] [Accepted: 04/14/2011] [Indexed: 12/02/2022] Open
Abstract
Purpose. To examine the effects of two doses of low-frequency (12 Hz), low-magnitude (0.3 g), whole body vibration on markers of bone formation and resorption in postmenopausal women. Methods. Women were recruited and randomized into a sham vibration control group, one time per week vibration group (1×/week), or three times per week vibration group (3×/week). Vibration exposure consisted of 20 minutes of intermittent vibration for the 1×/week and 3×/week groups, and sham vibration (<0.1 g) for the control group for eight weeks. Double-blinded primary outcome measures were urine markers of bone resorption: N-telopeptide X normalised to creatinine (NTx/Cr) and bone formation: bone-specific alkaline phosphatase (ALP). Results. Forty-six women (59.8 ± 6.2 years, median 7.3 years since menopause) were enrolled. NTx/Cr was significantly reduced (34.6%) in the 3×/wk vibration group but not in the 1×/wk vibration group compared with sham control (P < .01) group. No effect of time or group allocation was observed on the bone formation marker ALP (P = .27). Conclusion. We have shown for the first time that low-frequency, low-magnitude vibration 3×/week for eight weeks in postmenopausal women results in a significant reduction in NTx/Cr, a marker of bone resorption, when compared with sham vibration exposure.
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Affiliation(s)
- Sarah Turner
- Exercise, Health and Performance Faculty Research Group, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW 1825, Australia
| | - Margaret Torode
- Exercise, Health and Performance Faculty Research Group, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW 1825, Australia
| | - Mike Climstein
- School of Exercise Science, Australian Catholic University, Strathfield, NSW 2135, Australia
| | - Geraldine Naughton
- School of Exercise Science, Australian Catholic University, Strathfield, NSW 2135, Australia,Centre of Physical Activity Across the Lifespan, Australian Catholic University, Fitzroy, Victoria 3065, Australia
| | - David Greene
- School of Exercise Science, Australian Catholic University, Strathfield, NSW 2135, Australia
| | - Michael K. Baker
- Exercise, Health and Performance Faculty Research Group, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW 1825, Australia,School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA 6027, Australia,The Boden Institute of Obesity, Nutrition, and Exercise & Eating Disorders, Sydney Medical School, The University of Sydney, Sydney, NSW 2006, Australia
| | - Maria A. Fiatarone Singh
- Exercise, Health and Performance Faculty Research Group, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW 1825, Australia,The Boden Institute of Obesity, Nutrition, and Exercise & Eating Disorders, Sydney Medical School, The University of Sydney, Sydney, NSW 2006, Australia,Sydney Medical School, The University of Sydney, Sydney, NSW 2006, Australia,Hebrew SeniorLife and Jean Mayer USDA Human Nutrition Center on Aging, Tufts University, Boston, MA 02111-1524, USA,*Maria A. Fiatarone Singh:
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Karsdal MA, Woodworth T, Henriksen K, Maksymowych WP, Genant H, Vergnaud P, Christiansen C, Schubert T, Qvist P, Schett G, Platt A, Bay-Jensen AC. Biochemical markers of ongoing joint damage in rheumatoid arthritis--current and future applications, limitations and opportunities. Arthritis Res Ther 2011; 13:215. [PMID: 21539724 PMCID: PMC3132026 DOI: 10.1186/ar3280] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease associated with potentially debilitating joint inflammation, as well as altered skeletal bone metabolism and co-morbid conditions. Early diagnosis and aggressive treatment to control disease activity offers the highest likelihood of preserving function and preventing disability. Joint inflammation is characterized by synovitis, osteitis, and/or peri-articular osteopenia, often accompanied by development of subchondral bone erosions, as well as progressive joint space narrowing. Biochemical markers of joint cartilage and bone degradation may enable timely detection and assessment of ongoing joint damage, and their use in facilitating treatment strategies is under investigation. Early detection of joint damage may be assisted by the characterization of biochemical markers that identify patients whose joint damage is progressing rapidly and who are thus most in need of aggressive treatment, and that, alone or in combination, identify those individuals who are likely to respond best to a potential treatment, both in terms of limiting joint damage and relieving symptoms. The aims of this review are to describe currently available biochemical markers of joint metabolism in relation to the pathobiology of joint damage and systemic bone loss in RA; to assess the limitations of, and need for additional, novel biochemical markers in RA and other rheumatic diseases, and the strategies used for assay development; and to examine the feasibility of advancement of personalized health care using biochemical markers to select therapeutic agents to which a patient is most likely to respond.
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Affiliation(s)
- Morten A Karsdal
- Nordic Bioscience, Herlev Hovedgade 207, DK-2730 Herlev, Denmark
- Southern University of Denmark (SDU), Campusvej 55DK-5230 Odense M Denmark
| | - Thasia Woodworth
- Leading Edge Clinical Research LLC, 3901 SE St Lucie Blvd unit 20, Stuart, Florida 34997, USA
| | - Kim Henriksen
- Nordic Bioscience, Herlev Hovedgade 207, DK-2730 Herlev, Denmark
| | - Walter P Maksymowych
- University of Alberta, 562 Heritage Medical Research Building, Edmonton, AB T6G 2S2, Canada
| | | | | | | | | | - Per Qvist
- Nordic Bioscience, Herlev Hovedgade 207, DK-2730 Herlev, Denmark
| | - Georg Schett
- University of Erlangen-Nurnberg Department of Internal Medicine, Krankenhausstraße 12, 91054 Erlangen, Germany
| | - Adam Platt
- Roche Products Limited, 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW, UK
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Xu L, Tsai KS, Kim GS, Wu Y, Vincendon P, Chines AA, Constantine GD. Efficacy and safety of bazedoxifene in postmenopausal Asian women. Osteoporos Int 2011; 22:559-65. [PMID: 20535607 DOI: 10.1007/s00198-010-1259-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2009] [Accepted: 03/30/2010] [Indexed: 11/25/2022]
Abstract
UNLABELLED This 6-month study examined the efficacy and safety of bazedoxifene 20 mg in postmenopausal Asian women. Bazedoxifene showed statistically significant improvements over placebo in bone mineral density at all skeletal sites evaluated. Bazedoxifene significantly reduced bone turnover and had favorable effects on lipid parameters. Bazedoxifene was safe and well tolerated. INTRODUCTION This 6-month, randomized, double-blind, placebo-controlled phase 3 study conducted in China, Korea, and Taiwan evaluated the efficacy and safety of bazedoxifene in postmenopausal Asian women. METHODS Generally, healthy postmenopausal Asian women (N=487; mean age, 57.2 years; mean lumbar spine bone mineral density [BMD], -1.1) were randomized to daily therapy with bazedoxifene 20 mg or placebo; all subjects received daily supplemental calcium carbonate 600 mg. The changes from baseline in BMD at the lumbar spine (primary end point) and at other skeletal sites, bone turnover markers, and lipid parameters were evaluated at 6 months. Safety assessments included adverse event (AE) reporting and physical/gynecologic examination. RESULTS At 6 months, women who received bazedoxifene 20 mg had significantly greater BMD compared with those receiving placebo at the lumbar spine (0.41% vs -0.32%, P<0.01), femoral neck (-0.08% vs -0.69%, P=0.014), trochanter (0.50% vs -0.23%, P=0.010), and total hip (-0.03% vs -0.77%, P<0.001), respectively. Bazedoxifene 20 mg was also associated with significant differences from placebo in median percent reductions from baseline in serum C-telopeptide (-21.8%, P<0.001) and osteocalcin (-12.9%, P<0.001) levels and total (-5.0%, P<0.001) and low-density lipoprotein cholesterol (-9.5%, P<0.001) levels. The incidence of AEs was not different between subjects treated with bazedoxifene and those who received placebo. CONCLUSION Bazedoxifene was generally safe and effective in preventing bone loss in this short-term study of postmenopausal Asian women.
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Affiliation(s)
- L Xu
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, #1 Shuaifuyuan, Wangfujing, Beijing, 100730, People's Republic of China.
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11
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Zaidi M, Turner CH, Canalis E, Pacifici R, Sun L, Iqbal J, Guo XE, Silverman S, Epstein S, Rosen CJ. Bone loss or lost bone: rationale and recommendations for the diagnosis and treatment of early postmenopausal bone loss. Curr Osteoporos Rep 2009; 7:118-26. [PMID: 19968915 DOI: 10.1007/s11914-009-0021-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Recent reports suggest that bone loss begins during late perimenopause at a dramatic rate, even before estrogen levels plummet. During the ensuing 5 years, there is evidence of the beginnings of microarchitectural deterioration, which impacts bone strength and ultimately enhances its propensity to fracture. The diagnosis of osteoporosis based on T-scores alone, or through stratification for a high fracture risk by FRAX, excludes these women who are rapidly losing bone. Because all antiosteoporosis therapies, in particular bisphosphonates, reduce bone loss, we propose aggressive, likely short-term therapy with a goal to reduce bone loss, stabilize bone density, and prevent microarchitectural deterioration.
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Affiliation(s)
- Mone Zaidi
- The Mount Sinai Bone Program, Box 1055, Mount Sinai School of Medicine, One Gustave Levy Place, New York, NY 10029, USA.
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12
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Abstract
Cancer therapy can result in significant bone loss and increased risk of fragility fracture. Chemotherapy, aromatase inhibitors, and gonadotropin-releasing hormone analogues contribute to increases in the rate of bone remodelling and reduce bone mineral density. Patients with prostate cancer on androgen deprivation therapy experience an increase in the risk of fracture. New research has demonstrated the key role played by bisphosphonates in preventing declines in bone density and increases in bone remodelling. Novel antiresorptive agents targeting receptor activator of nuclear factor κB ligand have great potential in skeletal protection and prevention of bone loss related to cancer therapy. Early assessment of skeletal health, followed by initiation of calcium, vitamin D, and an exercise program are valuable in the prevention and treatment of osteoporosis. In addition, individuals at increased risk for fracture should be offered antiresorptive therapy. Early data have demonstrated that bisphosphonates are able to prevent the bone loss and increased bone remodelling associated with cancer therapy, including aromatase inhibition and androgen deprivation therapy. The present paper reviews the new research and advances in the management of bone loss associated with both cancer therapy and estrogen deficiency in the postmenopausal female.
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Affiliation(s)
| | - A.A. Khan
- Correspondence to: Aliya A. Khan, Department of Medicine, McMaster University, 331–209 Sheddon Avenue, Oakville, Ontario L6J1X8 E-mail:
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Lehmann HJ, Mouritzen U, Christgau S, Cloos PAC, Christiansen C. Effect of bisphosphonates on cartilage turnover assessed with a newly developed assay for collagen type II degradation products. Ann Rheum Dis 2002; 61:530-3. [PMID: 12006327 PMCID: PMC1754128 DOI: 10.1136/ard.61.6.530] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Animal studies of arthritis have suggested that bisphosphonates may have chondroprotective abilities. OBJECTIVE To evaluate the effect of bisphosphonate treatment on cartilage degradation. METHODS Type II collagen is almost exclusively localised in cartilage, where it is the major structural component of the tissue. Hence fragments derived from this protein should represent a specific index for cartilage degradation. The urinary concentration of collagen type II C-telopeptide degradation products (CTX-II) was measured by a new immunoassay (enzyme linked immunosorbent assay (ELISA)). The serum concentration of collagen type I C-telopeptide degradation products (CTX-I), a marker of bone degradation, was also measured by ELISA. PARTICIPANTS Two groups were studied. The alendronate group included 63 healthy postmenopausal women aged 45-54 randomly allocated to receive three years' treatment with 1 mg, 5 mg, 10 mg, or 20 mg alendronate daily or placebo. In the third year the women receiving 20 mg were switched to placebo. The ibandronate group included 119 women at least 10 years after the menopause aged <75 randomly allocated to receive 12 months' treatment with 0.25 mg, 0.5 mg, 1.0 mg, 2.5 mg, or 5 mg ibandronate daily or placebo followed by 12 months without treatment. RESULTS 20 mg of alendronate and 2.5 and 5 mg of ibandronate treatment produced significant decreases in urinary CTX-II to about 50% of baseline. The level reached after three months of treatment remained practically constant during the following 12-36 treatment months. When treatment was withdrawn CTX-II values returned towards baseline. Serum CTX-I also decreased rapidly within three months, but to a level of about 30% of baseline. CONCLUSIONS The urinary excretion of CTX-II, a new marker of cartilage degradation, decreases significantly in response to bisphosphonate. This suggests that bisphosphonates may have chondroprotective effects in humans. By measurement of CTX-II it should be possible to monitor the effects of drugs that potentially inhibit cartilage destruction.
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Affiliation(s)
- H J Lehmann
- Centre for Clinical and Basic Research, Ballerup, Denmark Osteometer Biotech A/S, Herlev, Denmark.
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