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Wang C, Kaur K, Xu C, Abu-Amer Y, Mbalaviele G. Chemotherapy activates inflammasomes to cause inflammation-associated bone loss. eLife 2024; 13:RP92885. [PMID: 38602733 PMCID: PMC11008812 DOI: 10.7554/elife.92885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024] Open
Abstract
Chemotherapy is a widely used treatment for a variety of solid and hematological malignancies. Despite its success in improving the survival rate of cancer patients, chemotherapy causes significant toxicity to multiple organs, including the skeleton, but the underlying mechanisms have yet to be elucidated. Using tumor-free mouse models, which are commonly used to assess direct off-target effects of anti-neoplastic therapies, we found that doxorubicin caused massive bone loss in wild-type mice, a phenotype associated with increased number of osteoclasts, leukopenia, elevated serum levels of danger-associated molecular patterns (DAMPs; e.g. cell-free DNA and ATP) and cytokines (e.g. IL-1β and IL-18). Accordingly, doxorubicin activated the absent in melanoma (AIM2) and NLR family pyrin domain containing 3 (NLRP3) inflammasomes in macrophages and neutrophils, causing inflammatory cell death pyroptosis and NETosis, which correlated with its leukopenic effects. Moreover, the effects of this chemotherapeutic agent on cytokine secretion, cell demise, and bone loss were attenuated to various extent in conditions of AIM2 and/or NLRP3 insufficiency. Thus, we found that inflammasomes are key players in bone loss caused by doxorubicin, a finding that may inspire the development of a tailored adjuvant therapy that preserves the quality of this tissue in patients treated with this class of drugs.
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Affiliation(s)
- Chun Wang
- Division of Bone and Mineral Diseases, Washington University School of MedicineSt. LouisUnited States
| | - Khushpreet Kaur
- Division of Bone and Mineral Diseases, Washington University School of MedicineSt. LouisUnited States
| | - Canxin Xu
- Aclaris Therapeutics, IncSt. LouisUnited States
| | - Yousef Abu-Amer
- Department of Orthopaedic Surgery, Washington University School of MedicineSt. LouisUnited States
- Shriners Hospitals for ChildrenSt. LouisUnited States
| | - Gabriel Mbalaviele
- Division of Bone and Mineral Diseases, Washington University School of MedicineSt. LouisUnited States
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Gani LU, Sritara C, Blank RD, Chen W, Gilmour J, Dhaliwal R, Gill R. Follow-up Bone Mineral Density Testing: 2023 Official Positions of the International Society for Clinical Densitometry. J Clin Densitom 2024; 27:101440. [PMID: 38007875 DOI: 10.1016/j.jocd.2023.101440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
Dual-energy X-ray absorptiometry (DXA) is the gold standard method for measuring bone mineral density (BMD) which is most strongly associated with fracture risk. BMD is therefore the basis for the World Health Organization's densitometric definition of osteoporosis. The International Society for Clinical Densitometry (ISCD) promotes best densitometry practices and its official positions reflect critical review of current evidence by domain experts. This document reports new official positions regarding follow-up DXA examinations based on a systematic review of literature published through December 2022. Adoption of official positions requires consensus agreement from an expert panel following a modified RAND protocol. Unless explicitly altered by the new position statements, prior ISCD official positions remain in force. This update reflects increased consideration of the clinical context prompting repeat examination. Follow-up DXA should be performed with pre-defined objectives when the results would have an impact on patient management. Testing intervals should be individualized according to the patient's age, sex, fracture risk and treatment history. Incident fractures and therapeutic approach are key considerations. Appropriately ordered and interpreted follow-up DXA examinations support diagnostic and therapeutic decision making, thereby contributing to excellent clinical care. Future research should address the complementary roles of clinical findings, imaging and laboratory testing to guide management.
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Affiliation(s)
- Linsey U Gani
- Department of Endocrinology, Changi General Hospital, Singapore.
| | - Chanika Sritara
- Nuclear Medicine Division, Department of Diagnostic and Therapeutic Radiology. Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | | | - WeiWen Chen
- Department of Endocrinology, St Vincent's Hospital Sydney, Australia
| | - Julia Gilmour
- Division of Endocrinology, St Michael's Hospital, Department of Medicine, University of Toronto
| | - Ruban Dhaliwal
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical School
| | - Ranjodh Gill
- Department of Medicine, Virginia Commonwealth University School of Medicine, Richmond, Virginia
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Szulc P, Lewis JR, Chapurlat R. Accelerated Bone Loss in Older Men With Severe Abdominal Aortic Calcification-the Prospective MINOS Study. J Clin Endocrinol Metab 2023; 109:e32-e39. [PMID: 37610245 DOI: 10.1210/clinem/dgad459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 06/30/2023] [Accepted: 08/07/2023] [Indexed: 08/24/2023]
Abstract
CONTEXT Data on the association between the severity of abdominal aortic calcification (AAC) and bone loss are discordant. OBJECTIVE Our aim was to assess the association between baseline AAC and prospectively assessed bone loss in older men. METHODS This prospective cohort study started in 1995 (MINOS). Men aged 50 to 85 years (n = 778) had AAC assessed on the lateral radiograph of the spine using Kauppila's semiquantitative score and was followed prospectively for 7.5 years. Bone mineral density (BMD) and bone mineral content (BMC) were measured by dual-energy x-ray absorptiometry every 18 months. Statistical analysis was performed using linear mixed models. RESULTS In comparison to men without AAC (AAC = 0), severe AAC (>6) was associated with more rapid bone loss at the total hip (-0.62 ± 0.06 vs -0.32 ± 0.04%/year; P < .001), trochanter, and distal forearm (-0.72 ± 0.06 vs -0.45 ± 0.03%/year; P < .001). The highest decile (AAC >10) was associated with more rapid bone loss at the femoral neck, whole body, and ultradistal radius (-0.86 ± 0.12 vs -0.34 ± 0.05%/year; P < .001). The results were similar for BMD and for BMC. The patterns were similar in sensitivity analyses (eg, after excluding men with abdominal obesity, after excluding current smokers, after excluding men with ischemic heart disease or with diabetes mellitus, after excluding men with abnormal concentrations of lipids, bioavailable 17β-estradiol or 25-hydroxycholecalciferol, after excluding men with glomerular filtration rate <60 mL/min). CONCLUSION Severe AAC is associated with faster bone loss in older men and may contribute to the higher fracture risk observed in this population.
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Affiliation(s)
- Pawel Szulc
- INSERM UMR 1033, University of Lyon, Hospices Civils de Lyon, 69437, Lyon, France
| | - Joshua R Lewis
- Institute for Nutrition Research, Edith Cowan University, Joondalup, Perth, WA 6027, Australia
- Medical School, the University of Western Australia, Perth, WA 6009, Australia
| | - Roland Chapurlat
- INSERM UMR 1033, University of Lyon, Hospices Civils de Lyon, 69437, Lyon, France
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Girard D, Wagner PP, Whittier DE, Boyd SK, Chapurlat R, Szulc P. C-reactive protein predicts endocortical expansion but not fracture in older men: the prospective STRAMBO study. Osteoporos Int 2023; 34:539-550. [PMID: 36567328 DOI: 10.1007/s00198-022-06652-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/15/2022] [Indexed: 12/27/2022]
Abstract
UNLABELLED In older men, higher high-sensitivity C-reactive protein (hsCRP) concentrations were associated with faster prospectively assessed endocortical expansion (distal radius, distal tibia) and slightly higher cortical bone loss at distal tibia, but not with the fracture risk. High hsCRP level has a limited impact on bone decline in older men. PURPOSE Data on the link of the high-sensitivity C-reactive protein (hsCRP) with bone loss and fracture risk are discordant. We studied the association of the hsCRP with the prospectively assessed decrease in areal bone mineral density (aBMD), bone microarchitecture decline, and fracture risk in older men. METHODS At baseline, hsCRP was measured in 823 men aged 60-88. Areal BMD and bone microarchitecture (distal radius, distal tibia) were assessed by dual-energy X-ray absorptiometry and high-resolution peripheral QCT, respectively, at baseline and after 4 and 8 years. Data on incident fractures were collected for 8 years. RESULTS Higher hsCRP concentration was associated with faster increase in aBMD at the whole body and lumbar spine, but not other sites. Higher hsCRP levels were associated with faster decrease in cortical area and more rapid increase in trabecular area at the distal radius (0.048 mm2/year/SD, p < 0.05) and distal tibia (0.123 mm2/year/SD, p < 0.001). At the distal tibia, high hsCRP level was associated with greater decrease in total and cortical volumetric BMD (vBMD) and in failure load. The hsCRP levels were not associated with the fracture risk, even after accounting for competing risk of death. CONCLUSION Higher hsCRP levels were associated with greater endocortical expansion at the distal radius and tibia. Higher hsCRP was associated with slightly faster decrease in total and cortical vBMD and failure load at distal tibia, but not with the fracture risk. Thus, high hsCRP levels are associated with faster cortical bone loss, but not with fracture risk in older men.
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Affiliation(s)
- Dylan Girard
- INSERM UMR 1033, University of Lyon, Hôpital Edouard Herriot, Pavillon F, Place d'Arsonval, 69437, Lyon, France
| | - Philippe P Wagner
- INSERM UMR 1033, University of Lyon, Hôpital Edouard Herriot, Pavillon F, Place d'Arsonval, 69437, Lyon, France
| | - Danielle E Whittier
- McCaig Institute for Bone and Joint Health, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Steven K Boyd
- McCaig Institute for Bone and Joint Health, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Roland Chapurlat
- INSERM UMR 1033, University of Lyon, Hôpital Edouard Herriot, Pavillon F, Place d'Arsonval, 69437, Lyon, France
| | - Pawel Szulc
- INSERM UMR 1033, University of Lyon, Hôpital Edouard Herriot, Pavillon F, Place d'Arsonval, 69437, Lyon, France.
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Ó Breasail M, Pearse C, Zengin A, Jarjou L, Cooper C, Ebeling PR, Prentice A, Ward KA. Longitudinal Change in Bone Density, Geometry, and Estimated Bone Strength in Older Men and Women From The Gambia: Findings From the Gambian Bone and Muscle Aging Study (GamBAS). J Bone Miner Res 2023; 38:48-58. [PMID: 36270918 PMCID: PMC10098512 DOI: 10.1002/jbmr.4727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 10/03/2022] [Accepted: 10/19/2022] [Indexed: 01/10/2023]
Abstract
Musculoskeletal aging in the most resource-limited countries has not been quantified, and longitudinal data are urgently needed to inform policy. The aim of this prospective study was to describe musculoskeletal aging in Gambian adults. A total of 488 participants were recruited stratified by sex and 5-year age band (aged 40 years and older); 386 attended follow-up 1.7 years later. Outcomes were dual-energy X-ray absorptiometry (DXA) (n = 383) total hip areal bone mineral density (aBMD), bone mineral content (BMC), bone area (BA); peripheral quantitative computed tomography (pQCT) diaphyseal and epiphyseal radius and tibia (n = 313) total volumetric BMD (vBMD), trabecular vBMD, estimated bone strength indices (BSIc), cross-sectional area (CSA), BMC, and cortical vBMD. Mean annualized percentage change in bone outcomes was assessed in 10-year age bands and linear trends for age assessed. Bone turnover markers, parathyroid hormone (PTH), and 25-hydroxyvitamin D (25(OH)D) were explored as predictors of change in bone. Bone loss was observed at all sites, with an annual loss of total hip aBMD of 1.2% in women after age 50 years and in men at age 70 years plus. Greater loss in vBMD and BSIc was found at the radius in both men and women; strength was reduced by 4% per year in women and 3% per year in men (p trend 0.02, 0.03, respectively). At cortical sites, reductions in BMC, CSA, and vBMD were observed, being greatest in BMC in women, between 1.4% and 2.0% per annum. Higher CTX and PINP predicted greater loss of trabecular vBMD in women and BMC in men at the radius, and higher 25(OH)D with less loss of tibial trabecular vBMD and CSA in women. The magnitude of bone loss was like those reported in countries where fragility fracture rates are much higher. Given the predicted rise in fracture rates in resource-poor countries such as The Gambia, these data provide important insights into musculoskeletal health in this population. © 2022 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Mícheál Ó Breasail
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
- MRC Nutrition and Bone Health Research Group, University of Cambridge, Cambridge, UK
| | - Camille Pearse
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton General Hospital, Southampton, UK
| | - Ayse Zengin
- Department of Medicine, School of Clinical Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash Medical Centre, Monash University, Clayton, Australia
| | - Landing Jarjou
- MRC Unit The Gambia at London School of Hygiene and Tropical Medicine, Banjul, Gambia
| | - Cyrus Cooper
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton General Hospital, Southampton, UK
- National Institute for Health Research (NIHR) Musculoskeletal Biomedical Research Unit, University of Oxford, Oxford, UK
| | - Peter R Ebeling
- Department of Medicine, School of Clinical Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash Medical Centre, Monash University, Clayton, Australia
| | - Ann Prentice
- MRC Nutrition and Bone Health Research Group, University of Cambridge, Cambridge, UK
- MRC Unit The Gambia at London School of Hygiene and Tropical Medicine, Banjul, Gambia
| | - Kate A Ward
- MRC Nutrition and Bone Health Research Group, University of Cambridge, Cambridge, UK
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton General Hospital, Southampton, UK
- MRC Unit The Gambia at London School of Hygiene and Tropical Medicine, Banjul, Gambia
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Improved Calculation Method of TAD for Intertrochanteric Fractures. Appl Bionics Biomech 2022; 2022:7729959. [DOI: 10.1155/2022/7729959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 09/29/2022] [Accepted: 10/18/2022] [Indexed: 12/12/2022] Open
Abstract
Purpose. To investigate the relative position of femur fixed screws using intramedullary systems for intertrochanteric fractures and to improve the accurate measurement method of the tip-to-apex distance (TAD) while providing a theoretical basis for the clinical treatment of such fractures. Methods. In the anteroposterior (AP) radiographs of the hip joint, the femoral neck axis through the femoral head geometry point was designated as the X-axis, while the line perpendicular to the X-axis passing through the femoral head geometry point was designated as the Y-axis. In the lateral radiographs of the hip joint, the line perpendicular to the X-axis passing through the femoral head geometry point was identified as the Z-axis. The head of the nail tip’s location projected on the three axes was described as AAP, B in the AP radiographs; and ALAT, C in the lateral radiograph. The TAD was described as XAP and XLAT. The radius of the femoral head was D. All distance units were expressed in mm. Results. When the lateral projection angle was standardized, the AAP was equal to the ALAT, while the
. When the lateral projection angle was not standardized, the value of C had no significant change; however, the
value changed. Conclusions. The measurement value did not match the actual values of TAD when the lateral projection angle was not standardized, possibly leading to a misinterpretation during clinical work. The XLAT should be amended using the formula
.
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David K, Narinx N, Antonio L, Evenepoel P, Claessens F, Decallonne B, Vanderschueren D. Bone health in ageing men. Rev Endocr Metab Disord 2022; 23:1173-1208. [PMID: 35841491 DOI: 10.1007/s11154-022-09738-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/20/2022] [Indexed: 01/11/2023]
Abstract
Osteoporosis does not only affect postmenopausal women, but also ageing men. The burden of disease is projected to increase with higher life expectancy both in females and males. Importantly, osteoporotic men remain more often undiagnosed and untreated compared to women. Sex steroid deficiency is associated with bone loss and increased fracture risk, and circulating sex steroid levels have been shown to be associated both with bone mineral density and fracture risk in elderly men. However, in contrast to postmenopausal osteoporosis, the contribution of relatively small decrease of circulating sex steroid concentrations in the ageing male to the development of osteoporosis and related fractures, is probably only minor. In this review we provide several clinical and preclinical arguments in favor of a 'bone threshold' for occurrence of hypogonadal osteoporosis, corresponding to a grade of sex steroid deficiency that in general will not occur in many elderly men. Testosterone replacement therapy has been shown to increase bone mineral density in men, however data in osteoporotic ageing males are scarce, and evidence on fracture risk reduction is lacking. We conclude that testosterone replacement therapy should not be used as a sole bone-specific treatment in osteoporotic elderly men.
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Affiliation(s)
- Karel David
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Herestraat 49, ON1bis box 902, 3000 , Leuven, Belgium
- Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
| | - Nick Narinx
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Herestraat 49, ON1bis box 902, 3000 , Leuven, Belgium
- Department of Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Leen Antonio
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Herestraat 49, ON1bis box 902, 3000 , Leuven, Belgium
- Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
| | - Pieter Evenepoel
- Nephrology and Renal Transplantation Research Group, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
- Department of Nephrology and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium
| | - Frank Claessens
- Laboratory of Molecular Endocrinology, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Brigitte Decallonne
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Herestraat 49, ON1bis box 902, 3000 , Leuven, Belgium
- Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
| | - Dirk Vanderschueren
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Herestraat 49, ON1bis box 902, 3000 , Leuven, Belgium.
- Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium.
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Fu L, Wang Y, Hu YQ. Inferring causal effects of homocysteine and B-vitamin concentrations on bone mineral density and fractures: Mendelian randomization analyses. Front Endocrinol (Lausanne) 2022; 13:1037546. [PMID: 36518252 PMCID: PMC9742470 DOI: 10.3389/fendo.2022.1037546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 11/07/2022] [Indexed: 11/29/2022] Open
Abstract
Objectives In the progress of bone metabolism, homocysteine (Hcy) and B vitamins play substantial roles. However, the causal associations of homocysteine, B-vitamin concentrations with bone mineral density (BMD), and fractures remain unclear. Therefore, we employed a two-sample Mendelian randomization (MR) design to infer the causal effects of Hcy and B vitamins on BMD and fractures. Methods We selected instrumental variables from large genome-wide association studies (GWASs). Specifically, the exposures mainly included Hcy (sample size: 44,147), vitamin B12 (sample size: 45,576), folate (sample size: 37,465), and vitamin B6 (sample size: 1,864). The outcome variables included total body BMD (sample size: 66,628), heel BMD (sample size: 142,487), femoral neck BMD (sample size: 32,735), lumbar spine BMD (sample size: 28,498), and forearm BMD (sample size: 8143). Additionally, the total body BMD in several age strata was also included. Furthermore, the fractures of the forearm, femoral neck, lumbar spine, heel corresponding with the BMD regions, and femoral neck and lumbar spine BMD in men and women, separately, were added as additional outcomes. Two-sample MR approaches were utilized in this study. Inverse variance weighting (IVW) was adopted as the main analysis. MR-PRESSO, MR-Egger, the weighted median estimate, and multivariable MR were performed as sensitivity methods. Results In the main analysis, Hcy concentrations have an inverse association with heel BMD (Beta = 0.046, 95% confidence interval (CI) -0.073 to -0.019, P = 9.59E-04) per SD unit. In addition, for one SD increase of vitamin B12, the total body BMD decreased 0.083 unit (95%CI -0.126 to -0.040, P = 1.65E-04). The trend was more obvious in age over 45 years (Beta = -0.135, 95%CI -0.203-0.067, P = 9.86E-05 for age 45-60; Beta = -0.074, 95%CI -0.141 to -0.007, P = 0.031 for age over 60 years). No association of B vitamins and Hcy levels with the risk of fractures and femoral neck and lumbar spine BMD in men and women was found in this study. Other sensitivity MR methods elucidated consistent results. Conclusions Our findings indicated that there exist the inversely causal effects of Hcy and vitamin B12 on BMD in certain body sites and age strata. These give novel clues for intervening bone-related diseases in public health and nutrition.
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Affiliation(s)
- Liwan Fu
- Center for Non-Communicable Disease Management, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing, China
| | - Yuquan Wang
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, Institute of Biostatistics, School of Life Sciences, Fudan University, Shanghai, China
| | - Yue-Qing Hu
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, Institute of Biostatistics, School of Life Sciences, Fudan University, Shanghai, China
- Shanghai Center for Mathematical Sciences, Fudan University, Shanghai, China
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Ensrud KE, Lui LY, Crandall CJ, Orwoll ES, Langsetmo L, Schousboe JT, Fink HA, Lane NE, Kado DM, Cauley JA, Stefanick ML, Cawthon PM. Repeat Bone Mineral Density Screening Measurement and Fracture Prediction in Older Men: A Prospective Cohort Study. J Clin Endocrinol Metab 2022; 107:e3877-e3886. [PMID: 35587517 PMCID: PMC9387719 DOI: 10.1210/clinem/dgac324] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Indexed: 12/13/2022]
Abstract
CONTEXT Whether repeated bone mineral density (BMD) screening improves fracture prediction in men is uncertain. OBJECTIVE We evaluated whether a second BMD 7 years after the initial BMD improves fracture prediction in older men. METHODS Among 3651 community-dwelling men (mean age 79.1 years) with total hip BMD at baseline and Year 7 (Y7), self-reported fractures after Y7 were confirmed by radiographic reports. Fracture prediction assessed using Cox proportional hazards regression and logistic regression with receiver operating characteristic curves for models based on initial BMD, BMD change, and the combination of initial BMD and BMD change (combination model). RESULTS During an average follow-up of 8.2 years after Y7, 793 men experienced ≥ 1 clinical fractures, including 426 men with major osteoporotic fractures (MOF) and 193 men with hip fractures. Both initial BMD and BMD change were associated with risk of fracture outcomes independent of each other, but the association was stronger for initial BMD. For example, the multivariable hazard ratio of MOF in the combination model per 1 SD decrement in BMD was 1.76 (95% CI 1.57-1.98) for initial BMD and 1.19 (95% CI 1.08-1.32) for BMD change. Discrimination of fracture outcomes with initial BMD models was somewhat better than with BMD change models and similar to combination models (AUC value for MOF 0.68 [95% CI 0.66-0.71] for initial BMD model, 0.63 [95% CI 0.61-0.66] for BMD change model, and 0.69 [95% CI 0.66-0.71] for combination model). CONCLUSION Repeating BMD after 7 years did not meaningfully improve fracture prediction at the population level in community-dwelling older men.
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Affiliation(s)
- Kristine E Ensrud
- Correspondence: Kristine E. Ensrud, MD, MPH, One Veterans Drive (111-0), Minneapolis, MN 55417, USA.
| | - Li-Yung Lui
- California Pacific Medical Center Research Institute, San Francisco, CA 94107, USA
| | - Carolyn J Crandall
- Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Eric S Orwoll
- Bone and Mineral Unit, Oregon Health & Science University, Portland, OR 97239, USA
| | - Lisa Langsetmo
- Center for Care Delivery and Outcomes Research, VA Health Care System, Minneapolis, MN 55417, USA
| | - John T Schousboe
- HealthPartners Institute, Bloomington, MN 55425, USA
- Division of Health Policy & Management, School of Public Health, University of Minnesota, Minneapolis, MN 55455, USA
| | - Howard A Fink
- Department of Medicine, University of Minnesota, Minneapolis, MN 55455, USA
- Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, Minneapolis, MN 55455, USA
- Center for Care Delivery and Outcomes Research, VA Health Care System, Minneapolis, MN 55417, USA
- Geriatric Research Education and Clinical Center, VA Health Care System, Minneapolis, MN 55417, USA
| | - Nancy E Lane
- Department of Internal Medicine, University of California – Davis, Sacramento, CA 95817, USA
| | - Deborah M Kado
- Department of Medicine, Stanford University, Stanford, CA 94304, USA
- Geriatric Research Education and Clinical Center, VA Health Care System, Palo Alto, CA 94304, USA
| | - Jane A Cauley
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | | | - Peggy M Cawthon
- California Pacific Medical Center Research Institute, San Francisco, CA 94107, USA
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Orwoll ES, Parimi N, Wiedrick J, Lapidus J, Napoli N, Wilkinson JE, Huttenhower C, Langsetmo L, Kiel DP. Analysis of the Associations Between the Human Fecal Microbiome and Bone Density, Structure, and Strength: The Osteoporotic Fractures in Men (MrOS) Cohort. J Bone Miner Res 2022; 37:597-607. [PMID: 35119137 PMCID: PMC9605688 DOI: 10.1002/jbmr.4518] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/27/2021] [Accepted: 01/13/2022] [Indexed: 11/08/2022]
Abstract
In preclinical models, the composition and function of the gut microbiota have been linked to bone growth and homeostasis, but there are few available data from studies of human populations. In a hypothesis-generating experiment in a large cohort of community-dwelling older men (n = 831; age range, 78-98 years), we explored the associations between fecal microbial profiles and bone density, microarchitecture, and strength measured with total hip dual-energy X-ray absorptiometry (DXA) and high-resolution peripheral quantitative computed tomography (HRpQCT) (distal radius, distal and diaphyseal tibia). Fecal samples were collected and the 16S rRNA gene V4 hypervariable region sequenced. Sequences were bioinformatically processed through the DADA2 pipeline and then taxonomically assigned using SILVA. Generalized linear models as implemented in microbiome multivariable association with linear models (MaAsLin 2) were used to test for associations between skeletal measures and specific microbial genera. The abundances of four bacterial genera were weakly associated with bone density, structure, or strength (false discovery rate [FDR] ≤ 0.05), and the measured directions of associations of genera were generally consistent across multiple bone measures, supporting a role for microbiota on skeletal homeostasis. However, the associated effect sizes were small (log2 fold change < ±0.35), limiting power to confidently identify these associations even with high resolution skeletal imaging phenotypes, and we assessed the resulting implications for the design of future cohort-based studies. As in analogous examples from genomewide association studies, we find that larger cohort sizes will likely be needed to confidently identify associations between the fecal microbiota and skeletal health relying on 16S sequencing. Our findings bolster the view that the gut microbiome is associated with clinically important measures of bone health, while also indicating the challenges in the design of cohort-based microbiome studies. © 2022 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Eric S Orwoll
- Department of Medicine, Oregon Health & Sciences University, Portland, OR, USA
| | - Neeta Parimi
- San Francisco Coordinating Center, San Francisco, CA, USA
| | - Jack Wiedrick
- Biostatistics & Design Program, Oregon Health & Science University, Portland, OR, USA
| | - Jodi Lapidus
- Biostatistics & Design Program, Oregon Health & Science University, Portland, OR, USA.,Oregon Health & Science University - Portland State University School of Public Health, Portland, OR, USA
| | - Nicola Napoli
- Department of Medicine, Unit of Endocrinology and Diabetes, Campus Bio-Medico University of Rome, Rome, Italy.,Division of Bone and Mineral Diseases, Washington University, St Louis, MO, USA
| | - Jeremy E Wilkinson
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Curtis Huttenhower
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Lisa Langsetmo
- School of Public Health, University of Minnesota, Twin Cities, Minneapolis, MN, USA
| | - Douglas P Kiel
- Hinda and Arthur Marcus Institute for Aging Research, Hebrew Senior Life, Boston, MA, USA.,Department of Medicine, Beth Israel Deaconess Medical Center & Harvard Medical School, Boston, MA, USA.,Broad Institute of MIT & Harvard, Cambridge, MA, USA
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11
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Johannesdottir F, Putman MS, Burnett-Bowie SAM, Finkelstein JS, Yu EW, Bouxsein ML. Age-Related Changes in Bone Density, Microarchitecture, and Strength in Postmenopausal Black and White Women: The SWAN Longitudinal HR-pQCT Study. J Bone Miner Res 2022; 37:41-51. [PMID: 34647644 PMCID: PMC8770571 DOI: 10.1002/jbmr.4460] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 09/24/2021] [Accepted: 10/03/2021] [Indexed: 01/28/2023]
Abstract
Higher fracture risk in White versus Black women is partly explained by lower BMD and worse bone microarchitecture in White women. However, whether rates of decline in bone density, microarchitecture and strength differ between postmenopausal Black and White women is unknown. Further, factors that influence rates of age-related bone microarchitecture deterioration remain ill-defined. Thus, over 6.7 years, longitudinal changes were measured in peripheral volumetric bone mineral density (vBMD), microarchitecture, and strength at the distal radius and tibia using HR-pQCT in postmenopausal Black (n = 80) and White (n = 137) women participating in the Study of Women's Health Across the Nation. It was assessed whether age-related changes in vBMD and microarchitecture were influenced by body weight, body composition, and/or weight change. It was found that at the radius, where White women appeared to have slightly greater rates of loss in total vBMD, cortical bone volume, and porosity than Black women, those differences were attenuated after adjusting for clinical covariates. At the tibia, Black and White women had similar rates of bone loss. Independent of race and other clinical covariates, women with the lowest baseline body weight experienced the greatest decline in total and trabecular vBMD at the radius. Furthermore, women who lost weight over the follow-up period had higher rates of bone loss, particularly at the tibia, compared with those who maintained or gained weight. Higher baseline total body fat mass was also protective of bone loss at both the radius and tibia. In conclusion, these findings indicate that lower fracture risk among postmenopausal Black women is not caused by slower rates of bone deterioration, and highlight the importance for postmenopausal women to avoid lower body weight and excessive weight loss to avert rapid bone loss and subsequent fractures. © 2021 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Fjola Johannesdottir
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Melissa S Putman
- Harvard Medical School, Boston, MA, USA.,Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA.,Endocrine Division, Boston Children's Hospital, Boston, MA, USA
| | - Sherri-Ann M Burnett-Bowie
- Harvard Medical School, Boston, MA, USA.,Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA
| | - Joel S Finkelstein
- Harvard Medical School, Boston, MA, USA.,Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA
| | - Elaine W Yu
- Harvard Medical School, Boston, MA, USA.,Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA
| | - Mary L Bouxsein
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA.,Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA
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12
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Kaufman JM. Management of osteoporosis in older men. Aging Clin Exp Res 2021; 33:1439-1452. [PMID: 33821467 DOI: 10.1007/s40520-021-01845-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 03/19/2021] [Indexed: 02/08/2023]
Abstract
As many as one out of three fragility fractures occur in older men and the outcome of major osteoporotic fractures, in particular hip fractures, is worse in men than in women. Osteoporosis in older men is thus an important threat to the quality of life of individual patients and a considerable burden for society. However, only a small minority of older men with high or very high fracture risk are receiving therapy. This does not need to be so as tools for fracture risk assessment are available and several drugs have been approved for treatment. Nevertheless, the evidence base for the management of osteoporosis in older men remains limited. This narrative review summarises the evidence for older men on the burden of osteoporosis, the pathophysiology of fragility fractures, the clinical presentation, diagnosis and risk assessment, the patient evaluation, and the non-pharmacological and pharmacological management.
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13
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Wang P, Liu L, Lei SF. Causal effects of homocysteine levels on the changes of bone mineral density and risk for bone fracture: A two-sample mendelian randomization study. Clin Nutr 2021; 40:1588-1595. [PMID: 33744603 DOI: 10.1016/j.clnu.2021.02.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 01/30/2021] [Accepted: 02/27/2021] [Indexed: 01/22/2023]
Abstract
BACKGROUND & AIMS Observational studies have demonstrated the relations of homocysteine (HCY) with bone mineral density (BMD) and bone fracture risk, but yielding contradictory results. The present study was conducted to evaluate whether the genetically predicted plasma HCY levels were causally associated with the change of BMD and the risk of bone fracture. METHODS Genetic summary statistics were extracted from genome-wide association study (GWAS) meta-analysis of plasma HCY levels (n = 44,147), GWAS meta-analyses of measured forearm (FA), femoral neck (FN) and lumbar spine (LS) BMD (n = up to 32,735), UK Biobank estimated heel BMD (eBMD) (n = 426,824) and fracture (n = 426,795) GWAS data. Two Sample Mendelian Randomization (TSMR) analysis was performed to assess the causal effects of genetically determined plasma HCY on the BMD and bone fractures. RESULTS The MR analysis indicated that, genetically decreased plasma HCY was associated with the increased FA-BMD based on the inverse variance weighting (IVW) method (standard deviation [SD] = 0.348, 95% CI: 0.146 to 0.550, P = 7 × 10-4). However, there were no significant associations of genetically decreased plasma HCY with FN-BMD, LS-BMD, eBMD and the risk for bone fracture (SD = -0.041, 95% CI: -0.189 to 0.106, P = 0.582; SD = -0.053, 95% CI: -0.238 to 0.131, P = 0.572; SD = -0.030, 95% CI: -0.090 to 0.030, P = 0.328, odds ratio [OR]: 1.03, 95% CI: 0.94 to 1.13, P = 0.562, respectively). Moreover, the results also found that genetically determined HCY increase was not correlated with the changes of BMD and the risk for bone fracture. CONCLUSION Our study revealed that genetically decreased plasma HCY was associated with increase of FA-BMD.
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Affiliation(s)
- Peng Wang
- Center for Genetic Epidemiology and Genomics, School of Public Health, Soochow University Medical College, 199 Renai Road, Suzhou, Jiangsu, 215123, China; Jiangsu Key Laboratory of Preventive & Translational Medicine for Geriatric Diseases, School of Public Health, Soochow University Medical College, Suzhou, Jiangsu 215123, China
| | - Lei Liu
- Department of Parasitology, Medical College of Soochow University, 199 Renai Road, Suzhou, 215123, Jiangsu, China
| | - Shu-Feng Lei
- Center for Genetic Epidemiology and Genomics, School of Public Health, Soochow University Medical College, 199 Renai Road, Suzhou, Jiangsu, 215123, China; Jiangsu Key Laboratory of Preventive & Translational Medicine for Geriatric Diseases, School of Public Health, Soochow University Medical College, Suzhou, Jiangsu 215123, China.
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14
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The comparison of bone mineral density of femoral head between non-hip fracture side and hip fracture side. Sci Rep 2020; 10:13015. [PMID: 32747650 PMCID: PMC7400568 DOI: 10.1038/s41598-020-70144-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 07/20/2020] [Indexed: 11/09/2022] Open
Abstract
We aimed to analyze the associations of bone mineral density (BMD) of femoral heads, age and gender, and compare the differences in BMD between fracture side and non-fracture side by “3D Spine Exam Analysis” module in QCT Pro software. In this study, we identified patients who had undergone quantitative computed tomography (QCT) examinations between March 2016 and July 2018 and measured their trabecular volumetric BMD (vBMD) of femoral heads. This retrospective study enrolled 367 subjects. A total of 149 participants with images were randomly selected to verify the repeatability of this method. The relationship among the vBMD, age and gender was analyzed (n = 367), and the difference of vBMD between non-fracture side and fracture side were studied in subjects (n = 75) with low-energy hip fracture on one side and compared the image quality of bilateral hip joints. The intraclass correlation coefficients (ICCs) between the results measured by 2 operators and the results measured by the same operator showed excellent agreement (ICCs > 0.9). Multivariate regression equation of vBMD of femoral head, age and gender showed statistical significance (P < 0.05). vBMD showed negative correlation with age (P < 0.05), and showed no statistically significant relation with gender (P > 0.05). vBMD of non-fracture side was higher than that of fracture side, but the difference was statistically significant only at the middle layer (Pmiddle < 0.05). In conclusions, the vBMD of femoral head as measured by "3D Spine Exam Analysis" module in QCT Pro software showed good repeatability. The trabecular vBMD of femoral head was negatively correlated with age, and not related with gender. The vBMD of femoral head was higher on non-fracture side than that on the fracture side.
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15
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Rochira V. Late-onset Hypogonadism: Bone health. Andrology 2020; 8:1539-1550. [PMID: 32469467 DOI: 10.1111/andr.12827] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/16/2020] [Accepted: 05/19/2020] [Indexed: 01/26/2023]
Abstract
BACKGROUND Bone health is underdiagnosed and undermanaged in men. Bone loss occurs in men with hypogonadism and in aging men. Thus, patients with a diagnosis of late-onset hypogonadism (LOH) are at risk of osteoporosis and osteoporotic fractures. OBJECTIVES To provide an update on research data and clinical implications regarding bone health in men with LOH by reviewing literature articles on this issue. MATERIALS AND METHODS A thorough search of listed publications in PubMed on bone health in older men with hypogonadism was performed, and other articles derived from these publications were further identified. RESULTS Late-onset Hypogonadism may be associated with reduced bone mineral density (BMD). In a pathophysiological perspective, the detrimental effects of testosterone (T) deficiency on BMD are partly ascribed to relative estrogen deficiency and both serum T and serum estradiol (E2) need to be above 200 ng/dL and 20 pg/mL to prevent bone loss. The effects of exogenous T on BMD are controversial, but most of the studies confirm that testosterone replacement therapy (TRT) increases BMD and prevents further bone loss in men with hypogonadism. No data are available on TRT and the prevention of fractures. DISCUSSION AND CONCLUSION In men with documented LOH, a specific clinical workup should be addressed to the diagnosis of osteoporosis in order to program subsequent follow-up and consider specific bone active therapy. TRT should be started according to guidelines of male hypogonadism while keeping in mind that it may also have positive effects also on bone health in men with LOH.
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Affiliation(s)
- Vincenzo Rochira
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.,Department of Medical Specialties, Azienda Ospedaliero-Universitaria di Modena, Ospedale Civile di Baggiovara, Modena, Italy
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16
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Cawthon PM, Parimi N, Langsetmo L, Cauley JA, Ensrud KE, Cummings SR, Lane NE, Hoffman AR, Lapidus J, Gill TM, McCulloch CE, Stefanick ML, Kado DM, Drieling R, Orwoll ES. Individual and joint trajectories of change in bone, lean mass and physical performance in older men. BMC Geriatr 2020; 20:161. [PMID: 32370738 PMCID: PMC7201689 DOI: 10.1186/s12877-020-01560-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 04/16/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Declines in bone, muscle and physical performance are associated with adverse health outcomes in older adults. However, few studies have described concurrent age-related patterns of change in these factors. The purpose of this study was to characterize change in four properties of muscle, physical performance, and bone in a prospective cohort study of older men. METHODS Using repeated longitudinal data from up to four visits across 6.9 years from up to 4681 men (mean age at baseline 72.7 yrs. ±5.3) participating in the Osteoporotic Fractures in Men (MrOS) Study, we used group-based trajectory models (PROC TRAJ in SAS) to identify age-related patterns of change in four properties of muscle, physical performance, and bone: total hip bone mineral (BMD) density (g/m2) and appendicular lean mass/ht2 (kg/m2), by DXA; grip strength (kg), by hand dynamometry; and walking speed (m/s), by usual walking pace over 6 m. We also described joint trajectories in all pair-wise combinations of these measures. Mean posterior probabilities of placement in each trajectory (or joint membership in latent groups) were used to assess internal reliability of the model. The number of trajectories for each individual factor was limited to three, to ensure that the pair-wise determination of joint trajectories would yield a tractable number of groups as well as model fit considerations. RESULTS The patterns of change identified were generally similar for all measures, with three district groups declining over time at roughly similar rates; joint trajectories revealed similar patterns with no cross-over or convergence between groups. Mean posterior probabilities for all trajectories were similar and consistently above 0.8 indicating reasonable model fit to the data. CONCLUSIONS Our description of trajectories of change with age in bone mineral density, grip strength, walking speed and appendicular lean mass found that groups identified by these methods appeared to have little crossover or convergence of change with age, even when considering joint trajectories of change in these factors.
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Affiliation(s)
- Peggy M Cawthon
- California Pacific Medical Center, Research Institute, San Francisco, CA, USA. .,Department of Epidemiology and Biostatistics, University of California, San Francisco Coordinating Center, 550 16th Street, 2nd floor, Box #0560, San Francisco, CA, 94143, USA.
| | - Neeta Parimi
- California Pacific Medical Center, Research Institute, San Francisco, CA, USA
| | - Lisa Langsetmo
- Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, MN, USA
| | - Jane A Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, USA
| | - Kristine E Ensrud
- Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, MN, USA.,Center for Chronic Disease Outcomes Research, Minneapolis VA Health Care System, Minneapolis, USA.,Department of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Steven R Cummings
- California Pacific Medical Center, Research Institute, San Francisco, CA, USA.,Department of Epidemiology and Biostatistics, University of California, San Francisco Coordinating Center, 550 16th Street, 2nd floor, Box #0560, San Francisco, CA, 94143, USA
| | | | | | - Jodi Lapidus
- Oregon Health and Science University, Portland, OR, USA
| | | | - Charles E McCulloch
- Department of Epidemiology and Biostatistics, University of California, San Francisco Coordinating Center, 550 16th Street, 2nd floor, Box #0560, San Francisco, CA, 94143, USA
| | | | | | | | - Eric S Orwoll
- Oregon Health and Science University, Portland, OR, USA
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17
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Chen S, Jain M, Jhangiani S, Akdemir ZC, Campeau PM, Klein RF, Nielson C, Dai H, Muzny DM, Boerwinkle E, Gibbs RA, Orwoll ES, Lupski JR, Posey JE, Lee B. Genetic Burden Contributing to Extremely Low or High Bone Mineral Density in a Senior Male Population From the Osteoporotic Fractures in Men Study (MrOS). JBMR Plus 2020; 4:e10335. [PMID: 32161841 PMCID: PMC7059823 DOI: 10.1002/jbm4.10335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/02/2019] [Accepted: 12/10/2019] [Indexed: 12/29/2022] Open
Abstract
Worldwide, one in five men aged over 50 years will experience osteoporosis or a clinical bone fracture, with a greater fracture-related mortality rate than women. However, the genetic etiology of osteoporosis in men is still poorly understood. We aimed to identify the genetic variants and candidate genes associated with extremely low or high BMD for a better understanding of the biology underlying low bone density that may point to potential therapeutic targets for increasing bone mass. Subjects from the Osteoporotic Fractures in Men Study (MrOS) cohort were evaluated by age and BMI-adjusted total hip BMD. Those with BMD values 3 SDs away from the mean were selected and the remaining individuals whose adjusted BMD ranked at the highest or lowest 100 were included. Men with the lowest adjusted BMD (N = 98) and highest adjusted BMD (N = 110) were chosen for exome sequencing. Controls (N = 82) were men of Northern and Western European descent from the US Utah population of the 1000 Genomes Project. Fisher's exact test was performed to compare low- or high-BMD subjects with controls for single-gene associations. Additionally, sets of candidate genes causative of heritable disorders of connective tissue, including osteogenesis imperfecta (OI) and Ehlers-Danlos syndrome (EDS), were grouped for multigene and mutation burden analyses. No single-gene associations with rare variants were found for either the low BMD group (33 genes) or high BMD group (18 genes). In the group of OI genes, we detected a significant threefold increased accumulation of rare variants in low-BMD subjects compared with controls (p = 0.009). Additionally, genes associated with EDS had a twofold increased frequency in low-BMD subjects compared with controls (p = 0.03). These findings reveal a rare variant burden in OI and EDS disease genes at low BMD, which suggests a potential gene-panel approach to screen for multivariant associations in larger cohorts. © 2019 The Authors. JBMR Plus published by Wiley Periodicals, Inc. on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Shan Chen
- Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA
| | - Mahim Jain
- Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA.,Osteogenesis Imperfecta Clinic, Kennedy Krieger Institute Baltimore MD USA
| | - Shalini Jhangiani
- Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA.,Human Genome Sequencing Center Baylor College of Medicine Houston TX USA
| | - Zeynep C Akdemir
- Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA
| | | | - Robert F Klein
- School of Medicine Oregon Health & Science University Portland OR USA
| | - Carrie Nielson
- School of Medicine Oregon Health & Science University Portland OR USA
| | - Hongzheng Dai
- Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA
| | - Donna M Muzny
- Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA.,Human Genome Sequencing Center Baylor College of Medicine Houston TX USA
| | - Eric Boerwinkle
- Human Genome Sequencing Center Baylor College of Medicine Houston TX USA.,Human Genetics Center and Department of Epidemiology UTHealth School of Public Health Houston TX USA
| | - Richard A Gibbs
- Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA.,Human Genome Sequencing Center Baylor College of Medicine Houston TX USA
| | - Eric S Orwoll
- School of Medicine Oregon Health & Science University Portland OR USA
| | - James R Lupski
- Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA.,Human Genome Sequencing Center Baylor College of Medicine Houston TX USA.,Department of Pediatrics Baylor College of Medicine and Texas Children's Hospital Houston TX USA
| | - Jennifer E Posey
- Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA
| | - Brendan Lee
- Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA
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18
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Su Y, Elshorbagy A, Turner C, Refsum H, Chan R, Kwok T. Circulating amino acids are associated with bone mineral density decline and ten-year major osteoporotic fracture risk in older community-dwelling adults. Bone 2019; 129:115082. [PMID: 31622772 PMCID: PMC6925590 DOI: 10.1016/j.bone.2019.115082] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 09/17/2019] [Accepted: 09/26/2019] [Indexed: 11/18/2022]
Abstract
With aging, poor bone mineral density (BMD) and accelerated decrease in BMD are strong risk factors for fracture. Reports of the associations of dietary protein intake with bone strength are inconsistent, possibly owing to differences in protein sources and amino acid (AA) composition. We examined the associations of serum AA with 4-year hip BMD loss and subsequent fracture risk within 10 years in older community-dwelling adults, and further addressed whether lifestyle, dietary protein intake and its source, and body composition would affect the associations. In 1424 men and 1573 women (mean age 72 years), using binary logistic regression, higher serum valine, leucine, isoleucine and tryptophan concentrations were associated (or approaching a borderline significance in case of the last three ones) with less hip BMD decline (defined as BMD loss ≥ 2.8 times the precision error of the BMD measurement at femoral neck) in 4 years later, with the OR (95%CI) /SD of AA increase, ranging from 0.83 (0.75, 0.91) to 0.92 (0.87, 0.98) after multiple adjustments for baseline age, gender, BMI, BMD, estimated glomerular filtration rate (eGFR), dietary protein intake (animal- and plant-derived protein intakes), calcium intake, established lifestyles (physical activity level, smoking and alcohol drinking status), osteoporosis medications, and changes of body fat and lean muscle mass. Higher serum total homocysteine (tHcy) concentration was independently associated with BMD decline 4 years later (OR (95%CI) /SD of 1.16 (1.05, 1.27)). Using multivariate Cox regression, higher serum tryptophan concentration potentially predicted low risk of incident major osteoporotic fractures (MOFs) (HR/SD (95%CI)=0.86 (0.75, 0.98)) after multiple adjustments. Higher serum tHcy was associated with MOFs (HR/SD (95%CI)=1.29 (1.12, 1.50)) risk after multiple adjustments in men. These findings suggest that a specific AA profile correlates with greater BMD and lower subsequent fracture risk, independent of diet and lifestyle factors.
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Affiliation(s)
- Yi Su
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Amany Elshorbagy
- Department of Physiology, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Cheryl Turner
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom
| | - Helga Refsum
- Institute of Basic Medical Sciences, Department of Nutrition, University of Oslo, Oslo, Norway
| | - Ruth Chan
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Timothy Kwok
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China; Jockey Club Centre for Osteoporosis Care and Control, The Chinese University of Hong Kong, Hong Kong, China.
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19
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Kendler DL, Compston J, Carey JJ, Wu CH, Ibrahim A, Lewiecki EM. Repeating Measurement of Bone Mineral Density when Monitoring with Dual-energy X-ray Absorptiometry: 2019 ISCD Official Position. J Clin Densitom 2019; 22:489-500. [PMID: 31378452 DOI: 10.1016/j.jocd.2019.07.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 07/15/2019] [Indexed: 01/03/2023]
Abstract
Bone mineral density (BMD) can be measured at multiple skeletal sites using various technologies to aid clinical decision-making in bone and mineral disorders. BMD by dual-energy X-ray absorptiometry (DXA) has a critical role in predicting risk of fracture, diagnosis of osteoporosis, and monitoring patients. In clinical practice, DXA remains the most available and best validated tool for monitoring patients. A quality baseline DXA scan is essential for comparison with all subsequent scans. Monitoring patients with serial measurements requires technical expertise and knowledge of the least significant change in order to determine when follow-up scans should be repeated. Prior ISCD Official Positions have clarified how and when repeat DXA is useful as well as the interpretation of results. The 2019 ISCD Official Positions considered new evidence and clarifies if and when BMD should be repeated. There is good evidence showing that repeat BMD measurement can identify people who experience bone loss, which is an independent predictor of fracture risk. There is good evidence showing that the reduction in spine and hip fractures with osteoporosis medication is proportional to the change in BMD with treatment. There is evidence that measuring BMD is useful following discontinuation of osteoporosis treatment. There is less documentation addressing the effectiveness of monitoring BMD to improve medication adherence, whether monitoring of BMD reduces the risk of fracture, or effectively discriminates patients who should and should not recommence treatment following an interruption of medication. Further research is needed in all of these areas.
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Affiliation(s)
- David L Kendler
- Department of Medicine, University of British Columbia, Vancouver, Canada.
| | - Juliet Compston
- Department of Medicine, Cambridge Biomedical Campus, Cambridge, United Kingdom
| | - John J Carey
- School of Medicine, National University of Ireland, Galway, Ireland
| | - Chih-Hsing Wu
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ammar Ibrahim
- School of Medicine, National University of Ireland, Galway, Ireland
| | - E Michael Lewiecki
- New Mexico Clinical Research and Osteoporosis Center, Albuquerque, NM, USA
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20
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Cauley JA, Burghardt AJ, Harrison SL, Cawthon PM, Schwartz AV, Connor EB, Ensrud KE, Langsetmo L, Majumdar S, Orwoll E. Accelerated Bone Loss in Older Men: Effects on Bone Microarchitecture and Strength. J Bone Miner Res 2018; 33:1859-1869. [PMID: 29750848 PMCID: PMC6330703 DOI: 10.1002/jbmr.3468] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 04/19/2018] [Accepted: 05/03/2018] [Indexed: 01/18/2023]
Abstract
Accelerated bone loss (ABL) shown on routine dual-energy X-ray absorptiometry (DXA) may be accompanied by microarchitectural changes, increased cortical porosity, and lower bone strength. To test this hypothesis, we performed a cross-sectional study and used high-resolution peripheral quantitative computed tomography (HR-pQCT) scans (Scanco Medical AG, Brüttisellen, Switzerland) to measure estimated bone strength and microarchitecture in the distal radius and distal and diaphyseal tibia. We studied 1628 men who attended the year 14 exam of the Osteoporotic Fractures in Men (MrOS) study. We retrospectively characterized areal bone mineral density (aBMD) change from the year 7 to year 14 exam in three categories: "accelerated" loss, ≥10% loss at either the total hip or femoral neck (n = 299, 18.4%); "expected" loss, <10% (n = 1061, 65.2%), and "maintained" BMD, ≥0% (n = 268, 16.5%). The ABL cut-off was a safety alert established for MrOS. We used regression models to calculate adjusted mean HR-pQCT parameters in men with ABL, expected loss, or maintained BMD. Men who experienced ABL were older and had a lower body mass index and aBMD and experienced greater weight loss compared with other men. Total volumetric BMD and trabecular and cortical volumetric BMD were lower in men with ABL compared with the expected or maintained group. Men with ABL had significantly lower trabecular bone volume fraction (BV/TV), fewer trabeculae, and greater trabecular separation at both the distal radius and tibia than men with expected loss or who maintained aBMD, all p trend <0.001. Men with ABL had lower cortical thickness and lower estimated bone strength, but there was no difference in cortical porosity except at the tibia diaphyseal site. In summary, men with ABL have lower estimated bone strength, poorer trabecular microarchitecture, and thinner cortices than men without ABL but have similar cortical porosity. These impairments may lead to an increased risk of fracture. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Jane A Cauley
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Andrew J Burghardt
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA
| | | | | | - Ann V Schwartz
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA
| | | | - Kristine E Ensrud
- Department of Medicine, University of Minnesota, Minneapolis, MN, USA
- Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, MN, USA
- Center for Chronic Disease Outcomes Research, VA Health Care System, Minneapolis, MN, USA
| | - Lisa Langsetmo
- Department of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Sharmila Majumdar
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA
| | - Eric Orwoll
- Oregon Health & Science University, Portland, OR, USA
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21
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Chalhoub D, Boudreau R, Greenspan S, Newman AB, Zmuda J, Frank-Wilson AW, Nagaraj N, Hoffman AR, Lane NE, Stefanick ML, Barrett-Connor E, Dam T, Cawthon PM, Orwoll ES, Cauley JA. Associations Between Lean Mass, Muscle Strength and Power, and Skeletal Size, Density and Strength in Older Men. J Bone Miner Res 2018; 33:1612-1621. [PMID: 29701926 PMCID: PMC6266871 DOI: 10.1002/jbmr.3458] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 04/17/2018] [Accepted: 04/22/2018] [Indexed: 11/06/2022]
Abstract
Studies examining the relationship between muscle parameters and bone strength have not included multiple muscle measurements and/or both central and peripheral skeletal parameters. The purpose of this study was to explore the relationship between lean mass, muscle strength and power, and skeletal size, bone density, and bone strength. We studied the association between appendicular lean mass (ALM), grip strength, and leg power, and central quantitative computed tomography (QCT) parameters in 2857 men aged 65 years or older; peripheral QCT was available on a subset (n = 786). ALM, grip strength, and leg power were measured by dual-energy X-ray absorptiometry (DXA), Jamar dynamometer, and the Nottingham Power Rig, respectively. Multivariable models adjusting for potential confounders including age, race, study site, BMI, and muscle measurements were developed and least squares means were generated from linear regression models. For the multivariable model, percent differences of bone parameters between lowest (Q1) and highest quartiles (Q4) of ALM, grip strength, and leg power were reported. ALM was significantly associated with central and peripheral QCT parameters: percent higher values (Q4 versus Q1) ranging from 3.3% (cortical volumetric bone mineral density [vBMD] of the femoral neck) to 31% (vertebral strength index of the spine). Grip strength was only significantly associated with radial parameters: percent higher values (Q4 versus Q1) ranging from 2.5% (periosteal circumference) to 7.5% (33% axial strength index [SSIx]). Leg power was associated with vertebral strength and lower cross-sectional area with percent lower values (Q4 versus Q1) of -11.9% and -2.7%, respectively. In older men, stronger associations were observed for ALM compared to muscle strength and power. Longitudinal studies are needed to examine the relationship between independent changes in muscle measurements and skeletal size, density and strength. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Didier Chalhoub
- Intramural Research Program, Laboratory of Epidemiology, and Population Sciences, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - Robert Boudreau
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Susan Greenspan
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Anne B Newman
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Joseph Zmuda
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Andrew W Frank-Wilson
- Intramural Research Program, Laboratory of Epidemiology, and Population Sciences, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - Nayana Nagaraj
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Andrew R Hoffman
- Department of Endocrinology, Stanford University School of Medicine, CA, USA
| | - Nancy E Lane
- Center for Musculoskeletal Health, University of California, Davis School of Medicine, Davis, CA, USA
| | - Marcia L Stefanick
- Department of Endocrinology, Stanford University School of Medicine, CA, USA
| | - Elizabeth Barrett-Connor
- Division of Epidemiology, Department of Family and Preventive Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Tien Dam
- Division of Epidemiology, Department of Family and Preventive Medicine, University of California, San Diego, La Jolla, CA, USA.,Division of Geriatrics and Aging, Columbia University, New York, NY, USA
| | - Peggy M Cawthon
- Research Institute, San Francisco Coordinating Center, California Pacific Medical Center, San Francisco, CA, USA
| | - Eric S Orwoll
- School of Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Jane A Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
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22
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Rogers TS, Harrison S, Judd S, Orwoll ES, Marshall LM, Shannon J, Langsetmo L, Lane NE, Shikany JM. Dietary patterns and longitudinal change in hip bone mineral density among older men. Osteoporos Int 2018; 29:1135-1145. [PMID: 29450584 PMCID: PMC6842326 DOI: 10.1007/s00198-018-4388-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 01/05/2018] [Indexed: 01/15/2023]
Abstract
UNLABELLED Studying dietary patterns is often more informative than individual nutrients or foods. We found that a Prudent dietary pattern (rich in vegetables and fish) was associated with reduced loss of total hip BMD in older men. A Prudent dietary pattern may be a potential lifestyle strategy for minimizing bone loss. INTRODUCTION This study aimed to identify baseline dietary patterns using factor analysis in a cohort of older men and to evaluate whether the dietary patterns were associated with bone mineral density change (%ΔBMD) at the total hip and femoral neck over time. METHODS Participants (n = 4379; mean age 72.9 ± 5.5 years) were from the Osteoporotic Fractures in Men (MrOS) prospective cohort study and had dietary data collected at baseline (March 2000-April 2002) and BMD measured at baseline and Visit 2 (March 2005-May 2006). Dietary intake was assessed with a brief Block food frequency questionnaire (FFQ); factor analysis was used to derive dietary patterns. BMD was measured by dual-energy x-ray absorptiometry (DXA); %ΔBMD was calculated from baseline to Visit 2. We used generalized linear regression to estimate least square (LS) means of %ΔBMD in quartiles of the dietary pattern scores adjusted for potential confounding factors. RESULTS Two major dietary patterns were derived: Prudent (abundant in vegetables, salad, and non-fried fish) and Western (rich in hamburger, fries, processed meats, cheese, and sweets/desserts). There was an inverse association between adherence to the Prudent pattern and total hip %ΔBMD (p-trend = 0.028 after adjusting for age and clinical site; p-trend = 0.033 after further adjustment for smoking, calcium supplement use, diabetes, hypertension, and total energy intake). No other consistent associations between dietary patterns and %ΔBMD were observed. CONCLUSIONS Greater adherence to a Prudent dietary pattern may attenuate total hip BMD loss (%ΔBMD) in older men.
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Affiliation(s)
- T S Rogers
- Center for Musculoskeletal Health and Department of Internal Medicine, University of California - Davis Medical Center, 4625 2nd Avenue, Suite 2000, Sacramento, CA, 95817, USA.
| | - S Harrison
- California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - S Judd
- University of Alabama at Birmingham, Birmingham, AL, USA
| | - E S Orwoll
- Oregon Health and Science University, Portland, OR, USA
| | - L M Marshall
- Oregon Health and Science University, Portland, OR, USA
| | - J Shannon
- Oregon Health and Science University, Portland, OR, USA
| | - L Langsetmo
- University of Minnesota Epidemiology and Community Health, Minneapolis, MN, USA
| | - N E Lane
- Center for Musculoskeletal Health and Department of Internal Medicine, University of California - Davis Medical Center, 4625 2nd Avenue, Suite 2000, Sacramento, CA, 95817, USA
| | - J M Shikany
- University of Alabama at Birmingham, Birmingham, AL, USA
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23
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Rochira V, Antonio L, Vanderschueren D. EAA clinical guideline on management of bone health in the andrological outpatient clinic. Andrology 2018; 6:272-285. [DOI: 10.1111/andr.12470] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 01/11/2018] [Indexed: 01/16/2023]
Affiliation(s)
- V. Rochira
- Unit of Endocrinology; Department of Biomedical, Metabolic and Neural Sciences; University of Modena and Reggio Emilia; Modena Italy
- Azienda Ospedaliero-Universitaria di Modena; Ospedale Civile di Baggiovara; Modena Italy
| | - L. Antonio
- Department of Endocrinology; University Hospitals Leuven; Leuven Belgium
| | - D. Vanderschueren
- Department of Endocrinology; University Hospitals Leuven; Leuven Belgium
- Department of Clinical and Experimental Medicine; Laboratory of Clinical and Experimental Endocrinology; KU Leuven; Leuven Belgium
- Department of Laboratory Medicine; University Hospitals Leuven; Leuven Belgium
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24
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Nguyen TV, Eisman JA. Assessment of Fracture Risk: Population Association Versus Individual Prediction. J Bone Miner Res 2018; 33:386-388. [PMID: 29281759 DOI: 10.1002/jbmr.3367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 12/01/2017] [Accepted: 12/15/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Tuan V Nguyen
- Osteoporosis and Bone Biology Division, Garvan Institute of Medical Research, Darlinghurst, Australia.,School of Public Health and Community Medicine, University of New South Wales (UNSW), Sydney, Australia.,School of Biomedical Engineering, University of Technology, Sydney, Australia
| | - John A Eisman
- Osteoporosis and Bone Biology Division, Garvan Institute of Medical Research, Darlinghurst, Australia.,School of Medicine Sydney, University of Notre Dame Australia, Fremantle, Australia.,St Vincent's Clinical School, UNSW Medicine, UNSW Sydney, Sydney, Australia
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25
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Rathbun AM, Magaziner J, Shardell MD, Yerges-Armstrong LM, Orwig D, Hicks GE, Hochberg MC. Older men who sustain a hip fracture experience greater declines in bone mineral density at the contralateral hip than non-fractured comparators. Osteoporos Int 2018; 29:365-373. [PMID: 29063216 PMCID: PMC5898436 DOI: 10.1007/s00198-017-4280-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 10/16/2017] [Indexed: 02/02/2023]
Abstract
UNLABELLED Men experience declining bone mineral density (BMD) after hip fracture; however, changes attributable to fracture are unknown. This study evaluated the excess BMD decline attributable to hip fracture among older men. Older men with hip fracture experienced accelerated BMD declines and are at an increased risk of secondary fractures. INTRODUCTION The objective was to determine whether bone mineral density (BMD) changes in men after hip fracture exceed that expected with aging. METHODS Two cohorts were used: Baltimore Hip Studies 7th cohort (BHS-7) and Baltimore Men's Osteoporosis Study (MOST). BHS-7 recruited older adults (N = 339) hospitalized for hip fracture; assessments occurred within 22 days of admission and at 2, 6, and 12 months follow-up. MOST enrolled age-eligible men (N = 694) from population-based listings; data were collected at a baseline visit and a second visit that occurred between 10 and 31 months later. The combined sample (n = 452) consisted of Caucasian men from BHS-7 (n = 89) and MOST (n = 363) with ≥ 2 dual-energy X-ray absorptiometry scans and overlapping ranges of age, height, and weight. Mixed-effect models estimated rates of BMD change, and generalized linear models evaluated differences in annual bone loss at the total hip and femoral neck between cohorts. RESULTS Adjusted changes in total hip and femoral neck BMD were - 4.16% (95% CI, - 4.87 to - 3.46%) and - 4.90% (95% CI, - 5.88 to - 3.92%) in BHS-7 participants; - 1.57% (95% CI, - 2.19 to - 0.96%) and - 0.99% (95% CI, - 1.88 to - 0.10%) in MOST participants; and statistically significant (P < 0.001) between-group differences in change were - 2.59% (95% CI, - 3.26 to - 1.91%) and - 3.91% (95% CI, - 4.83 to - 2.98%), respectively. CONCLUSION Hip fracture in older men is associated with accelerated BMD declines at the non-fractured hip that are greater than those expected during aging, and pharmacological interventions in this population to prevent secondary fractures may be warranted.
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Affiliation(s)
- A M Rathbun
- Geriatric Research Education and Clinical Center, VA Maryland Health Care System, Baltimore, MD, USA.
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Howard Hall Suite 200, 660 W. Redwood Street, Baltimore, MD, 21201, USA.
| | - J Magaziner
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Howard Hall Suite 200, 660 W. Redwood Street, Baltimore, MD, 21201, USA
| | - M D Shardell
- Translational Gerontology Branch, National Institutes on Aging, Baltimore, MD, USA
| | - L M Yerges-Armstrong
- Target Sciences Research and Development, GlaxoSmithKline, King of Prussia, PA, USA
| | - D Orwig
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Howard Hall Suite 200, 660 W. Redwood Street, Baltimore, MD, 21201, USA
| | - G E Hicks
- Department of Physical Therapy, University of Delaware, Newark, DE, USA
| | - M C Hochberg
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Howard Hall Suite 200, 660 W. Redwood Street, Baltimore, MD, 21201, USA
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26
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Cawthon PM, Patel S, Ewing SK, Lui LY, Cauley JA, Lyons JG, Fredman L, Kado DM, Hoffman AR, Lane NE, Ensrud KE, Cummings SR, Orwoll ES. Bone Loss at the Hip and Subsequent Mortality in Older Men: The Osteoporotic Fractures in Men (MrOS) Study. JBMR Plus 2017; 1:31-35. [PMID: 29124252 PMCID: PMC5673261 DOI: 10.1002/jbm4.10006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Low bone mineral density (BMD) is associated with increased mortality risk, yet the impact of BMD loss on mortality is relatively unknown. We hypothesized that greater BMD loss is associated with increased mortality risk in older men. Change in femoral neck BMD was assessed in 4400 Osteoporotic Fractures in Men (MrOS) study participants with two to three repeat dual‐energy X‐ray absorptiometry scans over an average of 4.6 ± 0.4 (mean ± SD) years. Change in femoral neck BMD was estimated using mixed effects models; men were grouped into three categories of BMD change: maintenance (n = 1087; change ≥ 0 g/cm2); expected loss (n = 2768; change between 0 g/cm2 and <1 SD below mean change [>–0.034 g/cm2]); and accelerated loss (n = 545; change 1 SD below mean change or worse [≤–0.034 g/cm2]). Multivariate proportional hazards models adjusted for potential confounders estimated the risk of all‐cause mortality over 8.1 ± 2.8 years following visit 2. Mortality was centrally adjudicated by physician review of death certificates. At visit 1, mean age was 72.9 ± 5.5 years. Men who maintained BMD were less likely to die during the subsequent follow‐up period (33.7%) than men who had accelerated BMD loss (60.6%) (p < 0.001). Compared to men who had maintained BMD, those who had accelerated BMD loss had a 44% greater risk of mortality in multivariate‐adjusted models (HR, 1.44; 95% CI, 1.23 to 1.68). Compared to men who had maintained BMD, there was no significant difference in mortality risk for men with expected loss of BMD (36.9% died) (multivariate HR, 1.00; 95% CI, 0.89 to 1.13). Further adjustment for visit 1 or visit 2 BMD measurement did not substantially alter these associations. Results for total hip BMD were similar. In conclusion, accelerated loss of BMD at the hip is a risk factor for mortality in men that is not explained by comorbidity burden, concurrent change in weight, or physical activity. © 2017 The Authors. JBMR Plus is published by Wiley Periodicals, Inc. on behalf of the American Society for Bone and Mineral Research.
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Affiliation(s)
- Peggy M Cawthon
- California Pacific Medical Center Research Institute, San Francisco, CA, USA.,Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA
| | - Sheena Patel
- California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - Susan K Ewing
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA
| | - Li-Yung Lui
- California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - Jane A Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jennifer G Lyons
- Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
| | - Lisa Fredman
- Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
| | - Deborah M Kado
- Departments of Family Medicine & Public Health and Internal Medicine, University of California, San Diego, CA, USA
| | | | - Nancy E Lane
- Center for Musculoskeletal Health and Department of Internal Medicine, University of California at Davis, Sacramento, CA, USA
| | - Kristine E Ensrud
- Center for Chronic Disease Outcomes Research, Minneapolis VA Health Care System, Minneapolis, MN, USA.,Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, MN, USA.,Department of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Steven R Cummings
- California Pacific Medical Center Research Institute, San Francisco, CA, USA.,Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA
| | - Eric S Orwoll
- Oregon Health and Science University, Portland, OR, USA
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27
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Nielson CM, Wiedrick J, Shen J, Jacobs J, Baker ES, Baraff A, Piehowski P, Lee CG, Baratt A, Petyuk V, McWeeney S, Lim JY, Bauer DC, Lane NE, Cawthon PM, Smith RD, Lapidus J, Orwoll ES. Identification of Hip BMD Loss and Fracture Risk Markers Through Population-Based Serum Proteomics. J Bone Miner Res 2017; 32:1559-1567. [PMID: 28316103 PMCID: PMC5489383 DOI: 10.1002/jbmr.3125] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 02/22/2017] [Accepted: 03/06/2017] [Indexed: 01/16/2023]
Abstract
Serum proteomics analysis may lead to the discovery of novel osteoporosis biomarkers. The Osteoporotic Fractures in Men (MrOS) study comprises men ≥65 years old in the US who have had repeated BMD measures and have been followed for incident fracture. High-throughput quantitative proteomic analysis was performed on baseline fasting serum samples from non-Hispanic white men using a multidimensional approach coupling liquid chromatography, ion-mobility separation, and mass spectrometry (LC-IMS-MS). We followed the participants for a mean of 4.6 years for changes in femoral neck bone mineral density (BMD) and for incident hip fracture. Change in BMD was determined from mixed effects regression models taking age and weight into account. Participants were categorized into three groups: BMD maintenance (no decline; estimated change ≥0 g/cm2 , n = 453); expected loss (estimated change 0 to 1 SD below the estimated mean change, -0.034 g/cm2 for femoral neck, n = 1184); and accelerated loss (estimated change ≥1 SD below mean change, n = 237). Differential abundance values of 3946 peptides were summarized by meta-analysis to determine differential abundance of each of 339 corresponding proteins for accelerated BMD loss versus maintenance. Using this meta-analytic standardized fold change at cutoffs of ≥1.1 or ≤0.9 (p < 0.10), 20 proteins were associated with accelerated BMD loss. Associations of those 20 proteins with incident hip fracture were tested using Cox proportional hazards models with age and BMI adjustment in 2473 men. Five proteins were associated with incident hip fracture (HR between 1.29 and 1.41 per SD increase in estimated protein abundance). Some proteins have been previously associated with fracture risk (eg, CD14 and SHBG), whereas others have roles in cellular senescence and aging (B2MG and TIMP1) and complement activation and innate immunity (CO7, CO9, CFAD). These findings may inform development of biomarkers for future research in bone biology and fracture prediction. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Carrie M Nielson
- OHSU-PSU School of Public Health, Oregon Health & Science University, Portland, OR, USA
- Bone and Mineral Unit, Oregon Health & Science University, Portland, OR, USA
| | - Jack Wiedrick
- Biostatistics and Design Program, OHSU-PSU School of Public Health, Oregon Health & Science University, Portland, OR, USA
| | - Jian Shen
- Bone and Mineral Unit, Oregon Health & Science University, Portland, OR, USA
| | - Jon Jacobs
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Erin S Baker
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Aaron Baraff
- Division of Biostatistics, Oregon Health & Science University, Portland, OR, USA
| | - Paul Piehowski
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Christine G Lee
- Research Service, Portland Veterans Affairs Medical Center, Portland, OR, USA
| | - Arie Baratt
- Division of Bioinformatics and Computational Biology, Oregon Health & Science University, Portland, OR, USA
| | - Vladislav Petyuk
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Shannon McWeeney
- Division of Bioinformatics and Computational Biology, Oregon Health & Science University, Portland, OR, USA
| | - Jeong Youn Lim
- Division of Biostatistics, Oregon Health & Science University, Portland, OR, USA
| | - Douglas C Bauer
- Department of Medicine, University of California, San Francisco, CA, USA
| | - Nancy E Lane
- Department of Internal Medicine, University of California at Davis, Sacramento, CA, USA
| | - Peggy M Cawthon
- California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - Richard D Smith
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Jodi Lapidus
- Biostatistics and Design Program, OHSU-PSU School of Public Health, Oregon Health & Science University, Portland, OR, USA
| | - Eric S Orwoll
- Bone and Mineral Unit, Oregon Health & Science University, Portland, OR, USA
- Department of Medicine, Oregon Health & Science University, Portland, OR, USA
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28
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Orwoll ES, Lapidus J, Wang PY, Vandenput L, Hoffman AR, Fink HA, Laughlin GA, Nethander M, Ljunggren Ö, Kindmark A, Lorentzon M, Karlsson M, Mellström D, Kwok A, Khosla S, Kwok T, Ohlsson C. The Limited Clinical Utility of Testosterone, Estradiol, and Sex Hormone Binding Globulin Measurements in the Prediction of Fracture Risk and Bone Loss in Older Men. J Bone Miner Res 2017; 32:633-640. [PMID: 27753150 PMCID: PMC5896330 DOI: 10.1002/jbmr.3021] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/05/2016] [Accepted: 10/16/2016] [Indexed: 01/08/2023]
Abstract
Measurement of serum testosterone (T) levels is recommended in the evaluation of osteoporosis in older men and estradiol (E2) and sex hormone binding globulin (SHBG) levels are associated with the rate of bone loss and fractures, but the clinical utility of sex steroid and SHBG measurements for the evaluation of osteoporosis in men has not been examined. To evaluate whether measurements of T, E2, and/or SHBG are useful for the prediction of fracture risk or the rate of bone loss in older men, we analyzed longitudinal data from 5487 community-based men participating in the Osteoporotic Fractures in Men (MrOS) study in the United States, Sweden, and Hong Kong. Serum T, E2, and SHBG levels were assessed at baseline; incident fractures were self-reported at 4-month intervals with radiographic verification (US), or ascertained via national health records (Sweden, Hong Kong). Rate of bone loss was assessed by serial measures of hip bone mineral density (BMD). We used receiver operating characteristic (ROC) curves, net reclassification improvement (NRI), and integrated discrimination improvement (IDI) to assess improvement in prediction. Mean age at baseline was 72 to 75 years and the prevalence of low T levels (<300 ng/dL) was 7.6% to 21.3% in the three cohorts. There were 619 incident major osteoporotic and 266 hip fractures during follow-up of approximately 10 years. Based on ROC curves, there were no improvements in fracture risk discrimination for any biochemical measure when added to models, including the Fracture Risk Assessment Tool (FRAX) with BMD. Although minor improvements in NRI were observed for the dichotomous parameters low bioavailable E2 (BioE2) (<11.4 pg/mL) and high SHBG (>59.1 nM), neither sex steroids nor SHBG provided clinically useful improvement in fracture risk discrimination. Similarly, they did not contribute to the prediction of BMD change. In conclusion, there is limited clinical utility of serum E2, T, and SHBG measures for the evaluation of osteoporosis risk in elderly men. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Eric S. Orwoll
- Division of Endocrinology, Diabetes, and Clinical Nutrition – Bone and Mineral Unit, School of Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Road CR 113, Portland, OR, USA 97239
| | - Jodi Lapidus
- Dept of Public Health and Preventive Medicine, Division of Biostatistics, Oregon Health & Science University, Portland, OR
| | - Patty Y. Wang
- Bone and Mineral Unit, Dept of Medicine, Oregon Health & Science University, Portland, OR
| | - Liesbeth Vandenput
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | | | - Howard A. Fink
- Geriatric Research Education & Clinical Center, VA Medical Center, Minneapolis, MN
- Dept of Medicine, University of Minnesota, Minneapolis, MN
| | - Gail A. Laughlin
- Division of Epidemiology, Dept of Family Medicine and Public Health, School of Medicine, University of California San Diego, La Jolla, CA
| | - Maria Nethander
- Bioinformatics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Östen Ljunggren
- Dept of Medical Sciences, University of Uppsala, Uppsala, Sweden
| | - Andreas Kindmark
- Dept of Medical Sciences, University of Uppsala, Uppsala, Sweden
| | - Mattias Lorentzon
- Centre for Bone and Arthritis Research and Dept of Geriatric Medicine, Inst of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Magnus Karlsson
- Clinical and Molecular Osteoporosis Research Unit, Dept of Clinical Sciences, Lund University
- Dept of Orthopaedics, Malmö University Hospital, Malmö, Sweden
| | - Dan Mellström
- Centre for Bone and Arthritis Research and Dept of Geriatric Medicine, Inst of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anthony Kwok
- Department of Orthopaedics and Traumatology, and Jockey Club Centre for Osteoporosis Care and Control, The Chinese University of Hong Kong
| | | | - Timothy Kwok
- Jockey Club Centre for Osteoporosis Care and Control, and Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Claes Ohlsson
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Orford NR, Lane SE, Bailey M, Pasco JA, Cattigan C, Elderkin T, Brennan-Olsen SL, Bellomo R, Cooper DJ, Kotowicz MA. Changes in Bone Mineral Density in the Year after Critical Illness. Am J Respir Crit Care Med 2016; 193:736-44. [PMID: 26559667 DOI: 10.1164/rccm.201508-1514oc] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
RATIONALE Critical illness may be associated with increased bone turnover and loss of bone mineral density (BMD). Prospective evidence describing long-term changes in BMD after critical illness is needed to further define this relationship. OBJECTIVES To measure the change in BMD and bone turnover markers (BTMs) in subjects 1 year after critical illness compared with population-based control subjects. METHODS We studied adult patients admitted to a tertiary intensive care unit (ICU) who required mechanical ventilation for at least 24 hours. We measured clinical characteristics, BTMs, and BMD during admission and 1 year after ICU discharge. We compared change in BMD to age- and sex-matched control subjects from the Geelong Osteoporosis Study. MEASUREMENTS AND MAIN RESULTS Sixty-six patients completed BMD testing. BMD decreased significantly in the year after critical illness at both femoral neck and anterior-posterior spine sites. The annual decrease was significantly greater in the ICU cohort compared with matched control subjects (anterior-posterior spine, -1.59%; 95% confidence interval, -2.18 to -1.01; P < 0.001; femoral neck, -1.20%; 95% confidence interval, -1.69 to -0.70; P < 0.001). There was a significant increase in 10-year fracture risk for major fractures (4.85 ± 5.25 vs. 5.50 ± 5.52; P < 0.001) and hip fractures (1.57 ± 2.40 vs. 1.79 ± 2.69; P = 0.001). The pattern of bone resorption markers was consistent with accelerated bone turnover. CONCLUSIONS Critically ill individuals experience a significantly greater decrease in BMD in the year after admission compared with population-based control subjects. Their bone turnover biomarker pattern is consistent with an increased rate of bone loss.
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Affiliation(s)
- Neil R Orford
- 1 Intensive Care Unit, University Hospital Geelong.,3 School of Medicine, Deakin University, and.,2 Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Stephen E Lane
- 3 School of Medicine, Deakin University, and.,4 Biostatistics Unit, Barwon Health, Geelong, Australia
| | - Michael Bailey
- 2 Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Julie A Pasco
- 5 Epi-Centre for Healthy Ageing, School of Medicine, Deakin University, Geelong, Australia.,6 Barwon Health, Geelong, Australia.,7 Department of Medicine, The University of Melbourne, Melbourne, Australia
| | - Claire Cattigan
- 1 Intensive Care Unit, University Hospital Geelong.,3 School of Medicine, Deakin University, and
| | | | - Sharon L Brennan-Olsen
- 5 Epi-Centre for Healthy Ageing, School of Medicine, Deakin University, Geelong, Australia.,7 Department of Medicine, The University of Melbourne, Melbourne, Australia.,8 Australian Institute for Musculoskeletal Science and Epidemiology Unit for Healthy Ageing, School of Medicine, University of Melbourne, Melbourne, Australia; and.,9 Institute for Health and Ageing, Australian Catholic University, Melbourne, Australia
| | - Rinaldo Bellomo
- 2 Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - David J Cooper
- 2 Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Mark A Kotowicz
- 5 Epi-Centre for Healthy Ageing, School of Medicine, Deakin University, Geelong, Australia.,6 Barwon Health, Geelong, Australia.,7 Department of Medicine, The University of Melbourne, Melbourne, Australia
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Jang EJ, Lee YK, Choi HJ, Ha YC, Jang S, Shin CS, Cho NH. Osteoporotic Fracture Risk Assessment Using Bone Mineral Density in Korean: A Community-based Cohort Study. J Bone Metab 2016; 23:34-9. [PMID: 26981519 PMCID: PMC4791436 DOI: 10.11005/jbm.2016.23.1.34] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 02/17/2016] [Accepted: 02/18/2016] [Indexed: 11/27/2022] Open
Abstract
Background Fracture-risk assessment tool (FRAX) using just clinical risk factors of osteoporosis has been developed to estimate individual risk of osteoporotic fractures. We developed prediction model of fracture risk using bone mineral density (BMD) as well as clinical risk factors in Korean, and assessed the validity of the final model. Methods To develop and validate an osteoporotic FRAX, a total of 768 Korean men and women aged 50 to 90 years were followed for 7 years in a community-based cohort study. BMD as well as clinical risk factors for osteoporotic fracture including age, sex, body mass index, history of fragility fracture, family history of fracture, smoking status, alcohol intake, use of oral glucocorticoid, rheumatoid arthritis, and other causes of secondary osteoporosis were assessed biannually. Results During the follow-up period, 86 osteoporotic fractures identified (36 in men and 50 in women). The developed prediction models showed high discriminatory power and had goodness of fit. Conclusions The developed a Korean specific prediction model for osteoporotic fractures can be easily used as a screening tool to identify individual with high risk of osteoporotic fracture. Further studies for validation are required to confirm the clinical feasibility in general Korean population.
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Affiliation(s)
- Eun Jin Jang
- Department of Information Statistics, Andong National University, Andong, Korea
| | - Young-Kyun Lee
- Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hyung Jin Choi
- Department of Anatomy, Seoul National University College of Medicine, Seoul, Korea
| | - Yong-Chan Ha
- Department of Orthopaedic Surgery, School of Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Sunmee Jang
- College of Pharmacy, Gachon University, Incheon, Korea
| | - Chan Soo Shin
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Nam Han Cho
- Department of Preventive Medicine, Ajou University School of Medicine, Suwon, Korea
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31
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Cawthon PM, Shahnazari M, Orwoll ES, Lane NE. Osteoporosis in men: findings from the Osteoporotic Fractures in Men Study (MrOS). Ther Adv Musculoskelet Dis 2016; 8:15-27. [PMID: 26834847 DOI: 10.1177/1759720x15621227] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The lifespan of men is increasing and this is associated with an increased prevalence of osteoporosis in men. Osteoporosis increases the risk of bone fracture. Fractures are associated with increased disability and mortality, and public health problems. We review here the study of osteoporosis in men as obtained from a longitudinal cohort of community-based older men, the Osteoporotic Fractures in Men Study (MrOS).
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Affiliation(s)
| | - Mohammad Shahnazari
- Northern California Institute for Research and Education, San Francisco, CA, USA
| | - Eric S Orwoll
- Oregon Health & Science University, Portland, OR, USA
| | - Nancy E Lane
- UC Davis Health System, 4625 2nd Avenue, Suite 2006, Sacramento, CA 95817, USA
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32
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Farr JN, Khosla S. Determinants of bone strength and quality in diabetes mellitus in humans. Bone 2016; 82:28-34. [PMID: 26211989 PMCID: PMC4679576 DOI: 10.1016/j.bone.2015.07.027] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 07/03/2015] [Accepted: 07/19/2015] [Indexed: 12/12/2022]
Abstract
There is growing evidence that the higher fracture rate observed in patients with type 2 diabetes mellitus (T2DM) is associated with normal, or even increased, areal bone mineral density (aBMD) by DXA. This has led to the hypothesis that patients with T2DM may have abnormalities in bone microarchitecture and/or material composition - i.e., key determinants of bone "quality." Consistent with this hypothesis, several studies using high-resolution peripheral quantitative computed tomography (HRpQCT) have demonstrated preserved indices of trabecular microarchitecture but increased cortical porosity in T2DM patients. In addition, a recent study using a novel in vivo microindentation device found an impairment in a measure of bone material properties (bone material strength index, BMSi) in postmenopausal women with longstanding T2DM; notably, the reduction in BMSi was associated with chronic glycemic control, suggesting that the skeleton should be included as another target organ subject to diabetic complications. The underlying pathogenesis of skeletal fragility in T2DM remains to be defined, although high levels of advanced glycation endproducts (AGEs) may play a role. In addition, T2DM is associated with reduced bone turnover, perhaps with an imbalance between bone resorption and bone formation. Although several studies have found increased serum sclerostin levels in patients with T2DM, the role of these increased levels in mediating the observed increases in cortical porosity or reduction in BMSi remains to be defined. Thus, although bone quality appears to be impaired in T2DM, the pathogenesis of these abnormalities and their relationship to the increased fracture risk observed in these patients needs further study.
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Affiliation(s)
- Joshua N Farr
- Endocrine Research Unit and Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA.
| | - Sundeep Khosla
- Endocrine Research Unit and Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA.
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Abstract
Type 2 diabetes affects an increasing proportion of older adults, the population that is also at elevated risk of fracture. Type 2 diabetes itself increases the risk of fracture, particularly in African-American and Latino populations. In Western countries, overweight and obesity, associated with reduced fracture risk, are highly prevalent in diabetic patients. Studies in East Asian countries that have a lower prevalence of obesity with diabetes may help to disentangle the effects of diabetes and obesity on the skeleton. Type 2 diabetes is also associated with higher bone density, and as a result standard tools for fracture prediction tend to underestimate fracture risk in this population, an important challenge for risk assessment in the clinical setting. Contributing factors to the increased fracture risk in type 2 diabetes include more frequent falls and deficits in diabetic bone, not captured by dual X-ray absorptiometry (DXA), that are as yet not clearly understood. Recent epidemiological studies indicate that poor glycemic control contributes to increased fracture risk although intensive lowering of A1C is not effective in preventing fracture. This article is part of a Special Issue entitled "Bone and diabetes".
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Affiliation(s)
- Ann V Schwartz
- Department of Epidemiology and Biostatistics, University of California San Francisco, 550 16th Street Box 0560, San Francisco, CA 94143, USA.
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Varzi D, Coupaud SAF, Purcell M, Allan DB, Gregory JS, Barr RJ. Bone morphology of the femur and tibia captured by statistical shape modelling predicts rapid bone loss in acute spinal cord injury patients. Bone 2015; 81:495-501. [PMID: 26341577 DOI: 10.1016/j.bone.2015.08.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 08/18/2015] [Accepted: 08/30/2015] [Indexed: 01/13/2023]
Abstract
After spinal cord injury (SCI), bone loss in the paralysed limbs progresses at variable rates. Decreases in bone mineral density (BMD) in the first year range from 1% (slow) to 40% (rapid). In chronic SCI, fragility fractures commonly occur around the knee, with significant associated morbidity. Osteoporosis treatments await full evaluation in SCI, but should be initiated early and targeted towards patients exhibiting rapid bone loss. The potential to predict rapid bone loss from a single bone scan within weeks of a SCI was investigated using statistical shape modelling (SSM) of bone morphology, hypothesis: baseline bone shape predicts bone loss at 12-months post-injury at fracture-prone sites. In this retrospective cohort study 25 SCI patients (median age, 33 years) were scanned at the distal femur and proximal tibia using peripheral Quantitative Computed Tomography at <5 weeks (baseline), 4, 8 and 12 months post-injury. An SSM was made for each bone. Links between the baseline shape-modes and 12-month total and trabecular BMD loss were analysed using multiple linear regression. One mode from each SSM significantly predicted bone loss (age-adjusted P<0.05 R(2)=0.37-0.61) at baseline. An elongated intercondylar femoral notch (femur mode 4, +1 SD from the mean) was associated with 8.2% additional loss of femoral trabecular BMD at 12-months. A more concave posterior tibial fossa (tibia mode 3, +1 SD) was associated with 9.4% additional 12-month tibial trabecular BMD loss. Baseline bone shape determined from a single bone scan is a valid imaging biomarker for the prediction of 12-month bone loss in SCI patients.
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Affiliation(s)
- Delaram Varzi
- Musculoskeletal Research Programme, University of Aberdeen, Aberdeen, UK
| | - Sylvie A F Coupaud
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK; Scottish Centre for Innovation in Spinal Cord Injury, Queen Elizabeth National Spinal Injuries Unit, Southern General Hospital, Glasgow, UK
| | - Mariel Purcell
- Scottish Centre for Innovation in Spinal Cord Injury, Queen Elizabeth National Spinal Injuries Unit, Southern General Hospital, Glasgow, UK
| | - David B Allan
- Scottish Centre for Innovation in Spinal Cord Injury, Queen Elizabeth National Spinal Injuries Unit, Southern General Hospital, Glasgow, UK
| | - Jennifer S Gregory
- Musculoskeletal Research Programme, University of Aberdeen, Aberdeen, UK
| | - Rebecca J Barr
- Musculoskeletal Research Programme, University of Aberdeen, Aberdeen, UK.
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Crandall CJ, Hovey KM, Andrews CA, Cauley JA, Manson JE, Wactawski-Wende J, Wright NC, Li W, Beavers K, Curtis JR, LeBoff MS. Bone Mineral Density as a Predictor of Subsequent Wrist Fractures: Findings From the Women's Health Initiative Study. J Clin Endocrinol Metab 2015; 100:4315-24. [PMID: 26367200 PMCID: PMC4702460 DOI: 10.1210/jc.2015-2568] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
CONTEXT Wrist fractures are common among postmenopausal women. Associations of bone mineral density (BMD) and 10-year predicted risk of major osteoporotic fracture (MOF) with wrist fractures are poorly characterized. OBJECTIVE The objective was to examine associations between the Fracture Risk Assessment Tool (FRAX)-predicted risk of MOF, BMD, BMD change, and wrist fracture. DESIGN This was a prospective observational study with a mean follow-up of 8.5 years. SETTING This study included 40 US centers. PARTICIPANTS A total of 11 392 participants from the Women's Health Initiative BMD Cohort aged 50-79 years at baseline were included in this study. INTERVENTIONS None. MAIN OUTCOME The goal was to measure incident wrist fracture. RESULTS A FRAX-predicted MOF risk ≥9.3% identified 17% of the women aged <65 years who subsequently experienced wrist fracture. Each one standard deviation lower BMD was associated with higher wrist fracture risk, with adjusted hazard ratio (95% confidence interval) of 1.66 (1.42-1.93) for femoral neck (FN) BMD and 1.45 (1.28-1.64) for lumbar spine BMD. Compared with FN BMD T score ≥ -1.0, wrist fracture adjusted hazard ratios (95% confidence interval) were: 1.51 (1.06-2.16) for a T score between -1.01 and -1.49; 1.93 (1.36-2.72) for T score between -1.50 and -1.99; 2.52 (1.77-3.60) for a T score between -2.00 and -2.49; and 2.65 (1.78-3.95) for a T score ≤ -2.5. Decrease in FN BMD between baseline and year 3 was associated with increased risk of subsequent wrist fracture; however, change in lumbar spine BMD was not. CONCLUSIONS Lumbar spine and femoral neck BMDs were associated with incident wrist fracture, but the FRAX threshold recommended to identify screening candidates did not identify the majority of women who subsequently experienced wrist fracture. Improved understanding of determinants of wrist fractures is warranted.
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Affiliation(s)
- Carolyn J Crandall
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
| | - Kathleen M Hovey
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
| | - Christopher A Andrews
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
| | - Jane A Cauley
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
| | - JoAnn E Manson
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
| | - Jean Wactawski-Wende
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
| | - Nicole C Wright
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
| | - Wenjun Li
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
| | - Kristen Beavers
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
| | - Jeffrey R Curtis
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
| | - Meryl S LeBoff
- Department of Medicine (C.J.C.), David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90024; Department of Epidemiology and Environmental Health (K.M.H., J.W.-W.), State University of New York at Buffalo, Buffalo, New York 14260; Department of Ophthalmology and Visual Sciences (C.A.A.), University of Michigan, Ann Arbor, Michigan 48109; Department of Epidemiology (J.A.C.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261; Division of Preventive Medicine (J.E.M.) and Department of Medicine, Endocrine, Diabetes and Hypertension Division (M.S.L.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02467; Department of Epidemiology (N.C.W.) and Division of Clinical Immunology and Rheumatology (J.R.C.), University of Alabama at Birmingham, Birmingham, Alabama 35294; Division of Preventive and Behavioral Medicine (W.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655; and Department of Health and Exercise Science (K.B.), Wake Forest University, Winston-Salem, North Carolina 27106
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Anitha D, Lee T. Assessing bone quality in terms of bone mineral density, buckling ratio and critical fracture load. J Bone Metab 2014; 21:243-7. [PMID: 25489572 PMCID: PMC4255044 DOI: 10.11005/jbm.2014.21.4.243] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 11/19/2014] [Accepted: 11/19/2014] [Indexed: 11/11/2022] Open
Abstract
Background Bone mineral density (BMD) is used as a sole parameter in the diagnosis of osteoporosis. Due to the ease of acquirement of BMD, clinical diagnosis still involves its usage although the limitations of BMD are quite well-established. Therefore, this preliminary study hoped to reduce the errors introduced by BMD alone by incorporating geometric and structural predictors simultaneously to observe if strength was implicitly dependent on the geometry and BMD. Hence, we illustrated the triadic relationship between BMD, buckling ratio (BR) and critical fracture load (Fcr). Methods The geometric predictor was the BR as it involves both the changes in the periosteum and the cortical thickness. Also, structural changes were monitored by finite element (FE) analysis-predicted Fcr. These BR and Fcr measurements were plotted with their respective femoral neck BMD values in elderly female patients (n=6) in a 3-year follow-up study, treated with ibandronate. Results In all the three-dimensional plots (baseline, mid and final year), high Fcr values were found at regions containing high BMD and low BR values. Quantitatively, this was also proven where an averaged highest Fcr across the three years had a relatively higher BMD (46%) and lower BR (19%) than that of the averaged lowest Fcr. The dependence of FE predicted strength on both the geometry and bone density was illustrated. Conclusions We conclude that use of triadic relationships for the evaluation of osteoporosis and hip fractures with the combination of strength, radiology-derived BR and bone density will lay the foundation for more accurate predictions in the future.
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Affiliation(s)
- D Anitha
- Department of Biomedical Engineering, National University of Singapore, Singapore
| | - Taeyong Lee
- Department of Medical Biotechnology, Dongguk University, Seoul, Korea
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Cawthon PM, Blackwell TL, Marshall LM, Fink HA, Kado DM, Ensrud KE, Cauley JA, Black D, Orwoll ES, Cummings SR, Schousboe JT. Physical performance and radiographic and clinical vertebral fractures in older men. J Bone Miner Res 2014; 29:2101-8. [PMID: 25042072 PMCID: PMC4335673 DOI: 10.1002/jbmr.2239] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 03/05/2014] [Accepted: 03/17/2014] [Indexed: 11/07/2022]
Abstract
In men, the association between poor physical performance and likelihood of incident vertebral fractures is unknown. Using data from the MrOS study (N = 5958), we describe the association between baseline physical performance (walking speed, grip strength, leg power, repeat chair stands, narrow walk [dynamic balance]) and incidence of radiographic and clinical vertebral fractures. At baseline and follow-up an average of 4.6 years later, radiographic vertebral fractures were assessed using semiquantitative (SQ) scoring on lateral thoracic and lumbar radiographs. Logistic regression modeled the association between physical performance and incident radiographic vertebral fractures (change in SQ grade ≥1 from baseline to follow-up). Every 4 months after baseline, participants self-reported fractures; clinical vertebral fractures were confirmed by centralized radiologist review of the baseline study radiograph and community-acquired spine images. Proportional hazards regression modeled the association between physical performance with incident clinical vertebral fractures. Multivariate models were adjusted for age, bone mineral density (BMD, by dual-energy X-ray absorptiometry [DXA]), clinical center, race, smoking, height, weight, history of falls, activity level, and comorbid medical conditions; physical performance was analyzed as quartiles. Of 4332 men with baseline and repeat radiographs, 192 (4.4%) had an incident radiographic vertebral fracture. With the exception of walking speed, poorer performance on repeat chair stands, leg power, narrow walk, and grip strength were each associated in a graded manner with an increased risk of incident radiographic vertebral fracture (p for trend across quartiles <0.001). In addition, men with performance in the worst quartile on three or more exams had an increased risk of radiographic fracture (odds ratio [OR] = 1.81, 95% confidence interval [CI] 1.33-2.45) compared with men with better performance on all exams. Clinical vertebral fracture (n =149 of 5813, 2.6%) was not consistently associated with physical performance. We conclude that poorer physical performance is associated with an increased risk of incident radiographic (but not clinical) vertebral fracture in older men.
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Affiliation(s)
- Peggy M Cawthon
- California Pacific Medical Center Research Institute, San Francisco, CA, USA
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Morden NE, Schpero WL, Zaha R, Sequist TD, Colla CH. Overuse of short-interval bone densitometry: assessing rates of low-value care. Osteoporos Int 2014; 25:2307-11. [PMID: 24809808 PMCID: PMC4210629 DOI: 10.1007/s00198-014-2725-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 04/16/2014] [Indexed: 11/25/2022]
Abstract
UNLABELLED We evaluated the prevalence and geographic variation of short-interval (repeated in under 2 years) dual-energy X-ray absorptiometry tests (DXAs) among Medicare beneficiaries. Short-interval DXA use varied across regions (coefficient of variation = 0.64), and unlike other DXAs, rates decreased with payment cuts. INTRODUCTION The American College of Rheumatology, through the Choosing Wisely initiative, identified measuring bone density more often than every 2 years as care "physicians and patients should question." We measured the prevalence and described the geographic variation of short-interval (repeated in under 2 years) DXAs among Medicare beneficiaries and estimated the cost of this testing and its responsiveness to payment change. METHODS Using 100 % Medicare claims data, 2006-2011, we identified DXAs and short-interval DXAs for female Medicare beneficiaries over age 66. We determined the population rate of DXAs and short-interval DXAs, as well as Medicare spending on short-interval DXAs, nationally and by hospital referral region (HRR). RESULTS DXA use was stable 2008-2011 (12.4 to 11.5 DXAs per 100 women). DXA use varied across HRRs: in 2011, overall DXA use ranged from 6.3 to 23.0 per 100 women (coefficient of variation = 0.18), and short-interval DXAs ranged from 0.3 to 8.0 per 100 women (coefficient of variation = 0.64). Short-interval DXA use fluctuated substantially with payment changes; other DXAs did not. Short-interval DXAs, which represented 10.1 % of all DXAs, cost Medicare approximately US$16 million in 2011. CONCLUSIONS One out of ten DXAs was administered in a time frame shorter than recommended and at a substantial cost to Medicare. DXA use varied across regions. Short-interval DXA use was responsive to reimbursement changes, suggesting carefully designed policy and payment reform may reduce this care identified by rheumatologists as low value.
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Affiliation(s)
- N E Morden
- The Dartmouth Institute for Health Policy & Clinical Practice, 35 Centerra Parkway, Lebanon, NH, 03766, USA,
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Gasier HG, Hughes LM, Young CR, Richardson AM. The assessment of bone mineral content and density of the lumbar spine and proximal femur in US submariners. Osteoporos Int 2014; 25:2225-34. [PMID: 24866394 DOI: 10.1007/s00198-014-2753-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 05/14/2014] [Indexed: 10/25/2022]
Abstract
UNLABELLED The submarine environment is unique in that there is limited space and no sunlight, which may negatively affect skeletal health and lead to accelerated bone loss, osteoporosis, and fractures. INTRODUCTION The primary purpose of this study was to determine whether there was an association with submarine service, specifically time spent at sea, and bone mineral content (BMC) and bone mineral density (BMD) of the lumbar spine and dual proximal femur (total hip and femoral neck) measured by DXA. METHODS This is a cross-sectional study of 462 submariners 20-91 years old. Variables included in the analysis were age, height, race, alcohol intake, tobacco use, fracture history, conditions, and medications known to cause bone loss and osteoporosis and submarine service. RESULTS Of the submarine service predictors, only serving onboard a diesel submarine was determined to be independently associated with a reduction in BMD of the total hip and femur neck, while no submarine service predictor increased the odds of having low BMD. In submariners 50+ years old, the age-adjusted prevalence of osteopenia was 15.7 % (lumbar spine) and 40.4 % (femur neck), while the prevalence of osteoporosis was 4.8 % (lumbar spine) and 4.2 % (femur neck), rates that did not differ from NHANES 2005-2008. In submariners <50 years old, 3.1 % was below the expected range for age. The proportion of submariners 50+ years old that met the FRAX criteria for pharmacological treatment was 12 %. CONCLUSIONS Intermittent periods of submergence that can range from a few days to 3+ months do not appear to compromise skeletal health differently than the general population.
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Affiliation(s)
- H G Gasier
- Center for Hyperbaric Medicine & Environmental Physiology, Duke University Medical Center, DUMC 3823 Bldg. CR II, Durham, NC, 27710, USA,
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Berry SD, Samelson EJ, Pencina MJ, McLean RR, Cupples LA, Broe KE, Kiel DP. Repeat bone mineral density screening and prediction of hip and major osteoporotic fracture. JAMA 2013; 310:1256-62. [PMID: 24065012 PMCID: PMC3903386 DOI: 10.1001/jama.2013.277817] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
IMPORTANCE Screening for osteoporosis with bone mineral density (BMD) is recommended for older adults. It is unclear whether repeating a BMD screening test improves fracture risk assessment. OBJECTIVES To determine whether changes in BMD after 4 years provide additional information on fracture risk beyond baseline BMD and to quantify the change in fracture risk classification after a second BMD measure. DESIGN, SETTING, AND PARTICIPANTS Population-based cohort study involving 310 men and 492 women from the Framingham Osteoporosis Study with 2 measures of femoral neck BMD taken from 1987 through 1999. MAIN OUTCOMES AND MEASURES Risk of hip or major osteoporotic fracture through 2009 or 12 years following the second BMD measure. RESULTS Mean age was 74.8 years. The mean (SD) BMD change was -0.6% per year (1.8%). Throughout a median follow-up of 9.6 years, 76 participants experienced an incident hip fracture and 113 participants experienced a major osteoporotic fracture. Annual percent BMD change per SD decrease was associated with risk of hip fracture (hazard ratio [HR], 1.43 [95% CI, 1.16 to 1.78]) and major osteoporotic fracture (HR, 1.21 [95% CI, 1.01 to 1.45]) after adjusting for baseline BMD. At 10 years' follow-up, 1 SD decrease in annual percent BMD change compared with the mean BMD change was associated with 3.9 excess hip fractures per 100 persons. In receiver operating characteristic (ROC) curve analyses, the addition of BMD change to a model with baseline BMD did not meaningfully improve performance. The area under the curve (AUC) was 0.71 (95% CI, 0.65 to 0.78) for the baseline BMD model compared with 0.68 (95% CI, 0.62 to 0.75) for the BMD percent change model. Moreover, the addition of BMD change to a model with baseline BMD did not meaningfully improve performance (AUC, 0.72 [95% CI, 0.66 to 0.79]). Using the net reclassification index, a second BMD measure increased the proportion of participants reclassified as high risk of hip fracture by 3.9% (95% CI, -2.2% to 9.9%), whereas it decreased the proportion classified as low risk by -2.2% (95% CI, -4.5% to 0.1%). CONCLUSIONS AND RELEVANCE In untreated men and women of mean age 75 years, a second BMD measure after 4 years did not meaningfully improve the prediction of hip or major osteoporotic fracture. Repeating a BMD measure within 4 years to improve fracture risk stratification may not be necessary in adults this age untreated for osteoporosis.
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Affiliation(s)
- Sarah D Berry
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA.
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Laurent M, Gielen E, Claessens F, Boonen S, Vanderschueren D. Osteoporosis in older men: recent advances in pathophysiology and treatment. Best Pract Res Clin Endocrinol Metab 2013; 27:527-39. [PMID: 24054929 DOI: 10.1016/j.beem.2013.04.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Osteoporosis remains underrecognized and undertreated but more so in men, adding considerably to fracture burden and costs. Fracture-related morbidity and mortality is higher in men, partly due to greater frailty. Improved peak bone mass, geometry and turn-over contribute to lower fracture incidence in men. Bioavailable androgens and oestrogens regulate these aspects of musculoskeletal sexual dimorphism, yet the direct cellular and molecular targets of sex steroids in bone remain incompletely understood. Screening with clinical risk factors and dual energy X-ray absorptiometry are advised in men from age 70 (or 50 with additional risk factors). We now have compelling evidence that osteoporosis drugs are equally effective in men and women, not only to increase bone density but also to prevent osteoporotic fractures. The use of testosterone or selective androgen receptor modulators for osteoporosis, sarcopenia, frailty and falls in men with late-onset hypogonadism requires further investigation.
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Affiliation(s)
- Michaël Laurent
- Geriatric Medicine, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium; Gerontology and Geriatrics, Department of Clinical and Experimental Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium; Laboratory of Molecular Endocrinology, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, 3000 Leuven, Belgium.
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Schwartz AV, Ewing SK, Porzig AM, McCulloch CE, Resnick HE, Hillier TA, Ensrud KE, Black DM, Nevitt MC, Cummings SR, Sellmeyer DE. Diabetes and change in bone mineral density at the hip, calcaneus, spine, and radius in older women. Front Endocrinol (Lausanne) 2013; 4:62. [PMID: 23755040 PMCID: PMC3667237 DOI: 10.3389/fendo.2013.00062] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 05/16/2013] [Indexed: 12/20/2022] Open
Abstract
Older women with type 2 diabetes mellitus (DM) have higher bone mineral density (BMD) but also have higher rates of fracture compared to those without DM. Limited evidence suggests that DM may also be associated with more rapid bone loss. To determine if bone loss rates differ by DM status in older women, we analyzed BMD data in the Study of Osteoporotic Fractures (SOF) between 1986 and 1998. SOF participants were women ≥65 years at baseline who were recruited from four regions in the U.S. DM was ascertained by self-report. BMD was measured with dual-energy x-ray absorptiometry (DXA) at baseline and at least one follow-up visit at the hip (N = 6624) and calcaneus (N = 6700) and, on a subset of women, at the spine (N = 396) and distal radius (N = 306). Annualized percent change in BMD was compared by DM status, using random effects models. Of 6,867 women with at least one follow-up DXA scan, 409 had DM at baseline. Mean age was 70.8 (SD 4.7) years. Baseline BMD was higher in women with DM at all measured sites. In models adjusted for age and clinic, women with prevalent DM lost bone more rapidly than those without DM at the femoral neck (-0.96 vs. -0.59%/year, p < 0.001), total hip (-0.98 vs. -0.70%/year, p < 0.001), calcaneus (-1.64 vs. -1.40%/year, p = 0.005), and spine (-0.33 vs. +0.33%/year, p = 0.033), but not at the distal radius (-0.97 vs. -0.90%/year, p = 0.91). These findings suggest that despite higher baseline BMD, older women with DM experience more rapid bone loss than those without DM at the hip, spine, and calcaneus, but not the radius. Higher rates of bone loss may partially explain higher fracture rates in older women with DM.
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Affiliation(s)
- Ann V. Schwartz
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
- *Correspondence: Ann V. Schwartz, Department of Epidemiology and Biostatistics, University of California San Francisco, 185 Berry Street, Suite 5700, 5th Floor, San Francisco, CA 94107, USA e-mail:
| | - Susan K. Ewing
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
| | - Anne M. Porzig
- Endocrine Division, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Charles E. McCulloch
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
| | - Helaine E. Resnick
- Department of Geriatrics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Teresa A. Hillier
- Kaiser Permanente Center for Health Research Northwest/Hawaii, Portland, OR, USA
| | | | - Dennis M. Black
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
| | - Michael C. Nevitt
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
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