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https://www.readbyqxmd.com/read/29346300/trapezium-bone-density-a-comparison-of-measurements-by-dxa-and-ct
#1
Sebastian Breddam Mosegaard, Kamille Breddam Mosegaard, Nadia Bouteldja, Torben Bæk Hansen, Maiken Stilling
Bone density may influence the primary fixation of cementless implants, and poor bone density may increase the risk of implant failure. Before deciding on using total joint replacement as treatment in osteoarthritis of the trapeziometacarpal joint, it is valuable to determine the trapezium bone density. The aim of this study was to: (1) determine the correlation between measurements of bone mineral density of the trapezium obtained by dual-energy X-ray absorptiometry (DXA) scans by a circumference method and a new inner-ellipse method; and (2) to compare those to measurements of bone density obtained by computerized tomography (CT)-scans in Hounsfield units (HU)...
January 18, 2018: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29327139/galectin-3-levels-relate-in-children-to-total-body-fat-abdominal-fat-body-fat-distribution-and-cardiac-size
#2
Magnus Dencker, Daniel Arvidsson, Magnus K Karlsson, Per Wollmer, Lars B Andersen, Ola Thorsson
Galectin-3 has recently been proposed as a novel biomarker for cardiovascular disease in adults. The purpose of this investigation was to assess relationships between galectin-3 levels and total body fat, abdominal fat, body fat distribution, aerobic fitness, blood pressure, left ventricular mass, left atrial size, and increase in body fat over a 2-year period in a population-based sample of children. Our study included 170 children aged 8-11 years. Total fat mass and abdominal fat were measured by dual-energy x-ray absorptiometry (DXA)...
January 11, 2018: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29324908/peripheral-quantitative-computed-tomography-detects-differences-at-the-radius-in-prepubertal-children-with-cystic-fibrosis-compared-to-healthy-controls
#3
Catherine E O'Brien, Gulnur Com, John Fowlkes, Xinyu Tang, Laura P James
INTRODUCTION: In 2015, 11.9% of people with cystic fibrosis (CF) in the United States had osteopenia, 5.1% osteoporosis, and 0.3% experienced a fracture. Screening for CF-related bone disease starts in childhood, and dual energy x-ray absorptiometry (DXA) is the recommended method. It is unknown whether peripheral quantitative computed tomography (pQCT) can detect deficits earlier than DXA. This study compared pQCT and DXA scans in a group of pre-pubertal children with CF and healthy controls...
2018: PloS One
https://www.readbyqxmd.com/read/29305636/lower-lean-mass-measured-by-dual-energy-x-ray-absorptiometry-dxa-is-not-associated-with-increased-risk-of-hip-fracture-in-women-the-framingham-osteoporosis-study
#4
Robert R McLean, Douglas P Kiel, Sarah D Berry, Kerry E Broe, Xiaochun Zhang, L Adrienne Cupples, Marian T Hannan
Although muscle mass influences strength in older adults, it is unclear whether low lean mass measured by dual-energy X-ray absorptiometry (DXA) is an independent risk factor for hip fracture. Our objective was to determine the association between DXA lean mass and incident hip fracture risk among 1978 women aged 50 years and older participating in the Framingham Study Original and Offspring cohorts. Leg and total body lean mass (kg) were assessed from whole-body DXA scans collected in 1992-2001. Hip fracture follow-up extended from DXA assessment to the occurrence of fracture, death, drop-out, or end of follow-up in 2007...
January 5, 2018: Calcified Tissue International
https://www.readbyqxmd.com/read/29290349/dxa-assessed-changes-in-body-composition-in-obese-women-following-two-different-weight-loss-programs
#5
Federico Ponti, Valentina Soverini, Andrea Plazzi, Maria Pilar Aparisi Gómez, Daniele Mercatelli, Giuseppe Guglielmi, Giuseppe Battista, Giulio Marchesini, Alberto Bazzocchi
OBJECTIVE: Changes in body composition during weight loss programs might have a significant effect on long-term results. The aim of this study was to test these changes by dual energy x-ray absorptiometry (DXA) in obese women enrolled into two different weight loss medical programs. METHODS: We prospectively studied 71 women assigned to either an intensive 3-mo cognitive-behavioral therapy (CBT) or a 1-mo nutritional counseling plan (NCP). All patients underwent DXA whole-body scan before treatment and after 3, 6, and 12 mo...
February 2018: Nutrition
https://www.readbyqxmd.com/read/29288247/dual-energy-x-ray-absorptiometry-visceral-adipose-tissue-estimates-reproducibility-and-impact-of-pre-assessment-diet
#6
Grant M Tinsley, Jeffrey S Forsse, Elisa Morales, Peter W Grandjean
We examined the reproducibility of dual-energy x-ray absorptiometry (DXA) visceral adipose tissue (VAT) estimates as well as the impact of pre-assessment diet. In a counterbalanced design, 41 adults received 6 DXA scans, while consuming standardized high- and low-carbohydrate (LC) diets. The impact of pre-assessment diet was examined via repeated-measures analysis of variance and reproducibility of VAT estimates was evaluated by technical error of measurement (TEM) and s.e. of a single determination (SESD)...
December 29, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29286209/precision-of-dxa-derived-visceral-fat-measurements-in-a-large-sample-of-adults-of-varying-body-size
#7
Kim Meredith-Jones, Jillian Haszard, Nigel Stanger, Rachael Taylor
OBJECTIVE: The aim of this study was to determine the precision of GE Lunar's CoreScan tool (GE Healthcare, Madison, Wisconsin) for measuring visceral adipose tissue (VAT) in adults of varying body size. METHODS: Two consecutive dual-energy x-ray absorptiometry (DXA) scans with repositioning were undertaken in 233 participants (110 male, 123 female) aged 18 to 70 years; 38% (n = 89) had normal weight, 34% (n = 80) had overweight, and 27% (n = 64) had obesity...
December 29, 2017: Obesity
https://www.readbyqxmd.com/read/29277840/investigating-comparability-of-quantitative-computed-tomography-with-dual-energy-x-ray-absorptiometry-in-assessing-bone-mineral-density-of-patients-with-chronic-spinal-cord-injury
#8
Hamid Reza Haghighat Khah, Nahid Moradi, Taher Taheri, Morteza Sanei Taheri, Seyed Mansoor Rayegani
STUDY DESIGN: Psychometric study using retrospectively collected data. OBJECTIVES: We investigated the comparability of quantitative computed tomography (qCT) in assessing bone mineral density (BMD) with dual energy X-ray absorptiometry (DXA). We evaluated how well previously suggested normal values for spinal Hounsfield units (HU) correlated with routine DXA results in patients with chronic spinal cord injury (SCI). Furthermore, we investigated inter/intra-observer reliability of measuring HU in the spine...
December 26, 2017: Spinal Cord
https://www.readbyqxmd.com/read/29239893/switch-from-tenofovir-disoproxil-fumarate-combination-to-dolutegravir-plus-rilpivirine-improves-parameters-of-bone-health
#9
Grace A Mccomsey, Sergio Lupo, David Parks, Mónica Coronado Poggio, Joseph De Wet, Lesley P Kahl, Kostas Angelis, Brian Wynne, Kati Vandermeulen, Martin Gartland, Michael Cupo, Michael Aboud
OBJECTIVE: Bone mineral density (BMD) loss, a risk factor for osteoporosis, has been attributed to HIV infection and antiretroviral therapy (ART), including regimens containing tenofovir disoproxil fumarate. DESIGN: Study 202094 is an open-label, parallel-group, sub-study of the phase III SWORD-1 and SWORD-2 studies (ClincialTrials.gov identifier, NCT02478632). METHODS: HIV-1-infected adults with HIV-1 RNA < 50 copies per mL who received ART containing tenofovir disoproxil fumarate for ≥6 months were randomized to receive dolutegravir+rilpivirine or continue current ART regimen...
December 12, 2017: AIDS
https://www.readbyqxmd.com/read/29237763/bisphenol-a-phthalate-metabolites-and-glucose-homeostasis-in-healthy-normal-weight-children
#10
Amalie Carlsson, Kaspar Sørensen, Anna-Maria Andersson, Hanne Frederiksen, Anders Juul
INTRODUCTION: Bisphenol A and several of the most commonly used phthalates have been associated with adverse metabolic health effects such as obesity and diabetes. Therefore, we analyzed these man-made chemicals in first morning urine samples from 107 healthy normal-weight Danish children and adolescents. METHOD: This was a cross-sectional study. Participants were recruited as part of The COPENHAGEN Puberty Study. The subjects were evaluated by an oral glucose tolerance test (OGTT), a dualenergy X-ray absorptiometry (DXA) scan, direct oxygen uptake measurement during cycle ergometry, and fasting blood samples...
December 13, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/29218381/effectiveness-of-a-two-step-population-based-osteoporosis-screening-program-using-frax-the-randomized-risk-stratified-osteoporosis-strategy-evaluation-rose-study
#11
K H Rubin, M J Rothmann, T Holmberg, M Høiberg, S Möller, R Barkmann, C C Glüer, A P Hermann, M Bech, J Gram, K Brixen
The Risk-stratified Osteoporosis Strategy Evaluation (ROSE) study investigated the effectiveness of a two-step screening program for osteoporosis in women. We found no overall reduction in fractures from systematic screening compared to the current case-finding strategy. The group of moderate- to high-risk women, who accepted the invitation to DXA, seemed to benefit from the program. INTRODUCTION: The purpose of the ROSE study was to investigate the effectiveness of a two-step population-based osteoporosis screening program using the Fracture Risk Assessment Tool (FRAX) derived from a self-administered questionnaire to select women for DXA scan...
December 7, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/29209416/reliability-of-analysis-of-the-bone-mineral-density-of-the-second-and-fifth-metatarsals-using-dual-energy-x-ray-absorptiometry-dxa
#12
N Stewart Pritchard, James M Smoliga, Anh-Dung Nguyen, Micah C Branscomb, David R Sinacore, Jeffrey B Taylor, Kevin R Ford
Background: Metatarsal fractures, especially of the fifth metatarsal, are common injuries of the foot in a young athletic population, but the risk factors for this injury are not well understood. Dual-energy x-ray absorptiometry (DXA) provides reliable measures of regional bone mineral density to predict fracture risk in the hip and lumbar spine. Recently, sub-regional metatarsal reliability was established in fresh cadaveric specimens and associated with ultimate fracture force. The purpose of this study was to assess the reliability of DXA bone mineral density measurements of sub-regions of the second and fifth metatarsals in a young, active population...
2017: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/29207490/is-trabecular-bone-score-valuable-in-bone-microstructure-assessment-after-gastric-bypass-in-women-with-morbid-obesity
#13
Agustina Pia Marengo, Fernando Guerrero Pérez, Luis San Martín, Rosa Monseny, Anna Casajoana, Rocio Valera, Nuria Virgili, Andreu Simó Servat, Albert Prats, Carmen Gómez-Vaquero, Nuria Vilarrasa
INTRODUCTION: The effects of bariatric surgery on skeletal health raise many concerns. Trabecular bone score (TBS) is obtained through the analysis of lumbar spine dual X-ray absorptiometry (DXA) images and allows an indirect assessment of skeletal microarchitecture (MA). The aim of our study was to evaluate the changes in bone mineral density (BMD) and alterations in bone microarchitecture assessed by TBS in morbidly obese women undergoing Roux-en-Y gastric bypass (RYGB), over a three-year follow-up...
December 2, 2017: Nutrients
https://www.readbyqxmd.com/read/29196119/bone-mineral-density-and-markers-of-bone-turnover-and-inflammation-in-diabetes-patients-with-or-without-a-charcot-foot-an-8-5-year-prospective-case-control-study
#14
Rasmus Bo Jansen, Tomas Møller Christensen, Jens Bülow, Lene Rørdam, Per E Holstein, Niklas Rye Jørgensen, Ole Lander Svendsen
BACKGROUND AND AIMS: Charcot foot is a rare but severe complication to diabetes and peripheral neuropathy. It is still unclear if an acute Charcot foot has long-term effects on the bone metabolism. To investigate this, we conducted a follow-up study to examine if a previously acute Charcot foot has any long-term effects on bone mineral density (BMD) or local or systemic bone metabolism. METHODS: An 8.5-year follow-up case-control study of 44 individuals with diabetes mellitus, 24 of whom also had acute or chronic Charcot foot at the baseline visit in 2005-2007, who were followed up in 2015 with DXA scans and blood samples...
February 2018: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/29188898/influence-of-high-fat-diet-on-bone-tissue-an-experimental-study-in-growing-rats
#15
G Rezende Yanagihara, R Carminati Shimano, J Atsuko Tida, J Suzuki Yamanaka, S Yasuyo Fukada, J P Mardegan Issa, A C Shimano, J M Tavares
BACKGROUND: The relationship between obesity and bone tissue remains contradictory, especially when the effect of high-fat diet is assessed in experimental models. The aim of this study was to evaluate the effects of high-fat diet on bone metabolism of growing rats. METHODS: Twenty weaned female Wistar rats were equally divided into two groups: SD (standard diet) and HFD (high-fat diet with 60 % of energy as fat). After five weeks of the two diets, the rats were euthanized, and the liver, blood and bones extracted...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/29167969/association-of-incident-hip-fracture-with-the-estimated-femoral-strength-by-finite-element-analysis-of-dxa-scans-in-the-osteoporotic-fractures-in-men-mros-study
#16
L Yang, N Parimi, E S Orwoll, D M Black, J T Schousboe, R Eastell
Finite element model can estimate bone strength better than BMD. This study used such a model to determine its association with hip fracture risk and found that the strength estimate provided limited improvement over the hip BMDs in predicting femoral neck (FN) fracture risk only. INTRODUCTION: Bone fractures occur only when it is loaded beyond its ultimate strength. The goal of this study was to determine the association of femoral strength, as estimated by finite element (FE) analysis of DXA scans, with incident hip fracture as a single condition or with femoral neck (FN) and trochanter (TR) fractures separately in older men...
November 22, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/29154969/adults-with-cystic-fibrosis-have-deficits-in-bone-structure-and-strength-at-the-distal-tibia-despite-similar-size-and-measuring-standard-and-relative-sites
#17
Kyle K Nishiyama, Sanchita Agarwal, Anna Kepley, Fernando Rosete, Yizhong Hu, X Edward Guo, Claire L Keating, Emily A DiMango, Elizabeth Shane
Individuals with cystic fibrosis (CF) have lower bone mineral density (BMD) by DXA and are at higher risk of fracture than healthy controls. However, the 2-dimensional measurement of areal BMD (aBMD) provided by DXA is influenced by bone size and the true extent of the bone deficit is unclear. Our objective was to use high-resolution peripheral quantitative computed tomography (HR-pQCT) and individual trabecula segmentation (ITS) analysis to compare volumetric BMD (vBMD), microarchitecture and estimated strength at the distal radius and tibia in 26 young adults with CF and 26 controls matched for age, gender, and race...
November 14, 2017: Bone
https://www.readbyqxmd.com/read/29149174/cystatin-b-cathepsin-l-and-d-related-to-surrogate-markers-for-cardiovascular-disease-in-children
#18
Magnus Dencker, Tina Tanha, Magnus K Karlsson, Per Wollmer, Lars B Andersen, Ola Thorsson
OBJECTIVE: This study investigated potential associations between novel biomarkers for cardiovascular disease and other surrogate markers for health. METHODS: Community sample of 170 (92 boys and 78 girls) children aged 8-11 years. Total fat mass (TBF) and abdominal fat (AFM) were measured by Dual-energy x-ray absorptiometry (DXA). Total body fat was also expressed as percentage of total body mass (BF%), and body fat distribution was calculated as AFM/TBF. Maximal oxygen uptake (VO2PEAK), systolic and diastolic blood pressure (SBP and DBP) and pulse pressure (PP) were measured...
2017: PloS One
https://www.readbyqxmd.com/read/29140875/bone-mineral-density-declines-twice-as-quickly-among-hiv-infected-women-compared-to-men
#19
Kristine M Erlandson, Jordan E Lake, Myung Sim, Julian Falutz, Carla M Prado, Ana Rita Domingues da Silva, Todd T Brown, Giovanni Guaraldi
BACKGROUND: Initial declines in bone mineral density (BMD) following antiretroviral therapy (ART) initiation in HIV are well described, but data on long-term changes and risk factors for decline, particularly among women, are limited. METHODS: HIV-infected men and women in the Modena Metabolic Clinic underwent dual-energy X-ray absorptiometry (DXA) scans every 6-12 months for up to 10 years (median 4.6 years). Mixed effect regression model in combined and sex-stratified models determined annual rates of decline and clinical factors associated with BMD...
November 11, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29135897/is-bmi-a-valid-measure-of-obesity-in-postmenopausal-women
#20
Hailey R Banack, Jean Wactawski-Wende, Kathleen M Hovey, Andrew Stokes
OBJECTIVE: Body mass index (BMI) is a widely used indicator of obesity status in clinical settings and population health research. However, there are concerns about the validity of BMI as a measure of obesity in postmenopausal women. Unlike BMI, which is an indirect measure of obesity and does not distinguish lean from fat mass, dual-energy x-ray absorptiometry (DXA) provides a direct measure of body fat and is considered a gold standard of adiposity measurement. The goal of this study is to examine the validity of using BMI to identify obesity in postmenopausal women relative to total body fat percent measured by DXA scan...
November 13, 2017: Menopause: the Journal of the North American Menopause Society
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