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https://www.readbyqxmd.com/read/27920811/the-use-of-routine-non-density-calibrated-clinical-computed-tomography-data-as-a-potentially-useful-screening-tool-for-identifying-patients-with-osteoporosis
#1
Christopher John Burke, Manjiri M Didolkar, Huiman X Barnhart, Emily N Vinson
OBJECTIVES: To evaluate whether lumbar vertebral body density CT attenuation values measured in Hounsfield Units (HUs) on routine Computed Tomography (CT) examinations can be reliably measured with limited variability, and to evaluate for a correlation between HUs and bone mineral density as measured by dual energy X-ray absorptiometry (DXA) scan. METHODS: Retrospective review of a total of 249 routine MDCT examinations, performed to measure HUs at the first non-rib bearing lumbar vertebral body on axial images, cross-referenced to the lateral scout image...
May 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/27881670/the-effect-of-alternate-day-caloric-restriction-on-the-metabolic-consequences-of-eight-days-bed-rest-in-healthy-lean-men-a-randomized-trial
#2
Nina Majlund Harder-Lauridsen, Signe Tellerup Nielsen, Sebastian Porsdam Mann, Mark Preben Lyngbæk, Fabiana Braga Benatti, Annika Reynberg Langkilde, Ian Law, Anne-Sophie Wedell-Neergaard, Carsten Thomsen, Kirsten Moller, Kristian Karstoft, Bente Klarlund Pedersen, Rikke Krogh-Madsen
BACKGROUND: Physical activity and alternate-day fasting/caloric restriction may both ameliorate aspects of the metabolic syndrome, such as insulin resistance, visceral fat mass accumulation, and cognitive impairment, by overlapping mechanisms. OBJECTIVE: To test the hypothesis that alternate-day caloric restriction (ADCR) with overall energy balance would reduce insulin resistance and accumulation of visceral fat, in addition to improving cognitive functions, after eight consecutive days in bed...
November 23, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27881458/dosage-of-estradiol-bone-and-body-composition-in-turner-syndrome-a-5-year-randomized-controlled-clinical-trial
#3
Line Cleemann, Kirsten Holm, Hanne Kobbernagel, Bent Kristensen, Sven Oluf Skouby, Andreas Emil Kryger Jensen, Claus Hojbjerg Gravholt
OBJECTIVE: Reduced bone mineral density (BMD) is seen in Turner syndrome (TS) with an increased risk of fractures, and body composition is characterized by increased body fat and decreased lean body mass. To evaluate the effect of two different doses of oral 17ß-estradiol in young TS women on bone mineral density (BMD), biochemical markers of bone turnover, and body composition with the hypothesis of a positive effect of the higher dose. DESIGN: A double-blind 5-year randomized controlled clinical trial...
November 23, 2016: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27875495/accuracy-and-reliability-of-assessing-lateral-compartmental-leg-composition-using-dxa
#4
Christiana J Raymond, Tyler A Bosch, Foster K Bush, Lisa S Chow, Donald R Dengel
PURPOSE: Investigate the accuracy and reliability of a novel dual X-ray absorptiometry (DXA) scanning method in the frontal plane for total, fat, and lean mass quantification of the anterior and posterior upper leg compartments. METHODS: Twenty-one (11 female; X[Combining Overline]age=20.3±1.3 yrs) college athletes were assessed for total and regional body composition using DXA. Segmentation of anterior/posterior thigh compartments was measured with participants lying on their right and left sides and the scanned leg elevated with two foam pads...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27871967/prevalence-and-etiology-of-hypogonadism-in-young-men-with-chronic-spinal-cord-injury-a-cross-sectional-analysis-from-two-university-based-rehabilitation-centers
#5
Shannon D Sullivan, Mark S Nash, Eshetu Tefera, Emily Tinsley, Marc R Blackman, Suzanne Groah
BACKGROUND: Spinal cord injury (SCI) triggers an "accelerated aging" process that may include development of hypogonadism, even among younger men with SCI; however, few studies have investigated the prevalence or etiology of hypogonadism in men with SCI. Young men with SCI also are at increased risk for developing metabolic dysfunction after injury, which may be exacerbated by concomitant testosterone (T) deficiency, thus identifying the prevalence and risk factors for T deficiency in men with SCI is important for their long-term health...
November 18, 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/27866821/advanced-analysis-techniques-improve-infant-bone-and-body-composition-measures-by-dual-energy-x-ray-absorptiometry
#6
John A Shepherd, Markus J Sommer, Bo Fan, Cassidy Powers, Lynda Stranix-Chibanda, Amanda Zadzilka, Michael Basar, Kathy George, Cynthia Mukwasi-Kahari, George Siberry
OBJECTIVE: To evaluate a novel technique designed to reduce the negative impact of motion artifacts in infant dual-energy X-ray absorptiometry (DXA) scans. STUDY DESIGN: Using cross-sectional data from a large multicenter study, we developed and tested advanced methods for infant scan analysis. Newborns (n = 750) received spine and whole-body DXA scans with up to 3 attempts to acquire a motion free scan. Precision of infant DXA was estimated from visits with multiple valid scans...
November 18, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27852598/frailty-and-bone-health-in-european-men
#7
Michael J Cook, Alexander Oldroyd, Stephen R Pye, Kate A Ward, Evelien Gielen, Rathi Ravindrarajah, Judith E Adams, David M Lee, Gyorgy Bartfai, Steven Boonen, Felipe Casanueva, Gianni Forti, Aleksander Giwercman, Thang S Han, Ilpo T Huhtaniemi, Krzysztof Kula, Michael E Lean, Neil Pendleton, Margus Punab, Dirk Vanderschueren, Frederick C Wu, Terence W O'Neill
BACKGROUND: frailty is associated with an increased risk of fragility fractures. Less is known, however, about the association between frailty and bone health. METHODS: men aged 40-79 years were recruited from population registers in eight European centres for participation in the European Male Aging Study. Subjects completed a comprehensive assessment which included quantitative ultrasound (QUS) scan of the heel (Hologic-SAHARA) and in two centres, dual-energy bone densitometry (dual-energy x-ray absorptiometry, DXA)...
November 16, 2016: Age and Ageing
https://www.readbyqxmd.com/read/27849427/generalized-high-bone-mineral-density-on-bone-density-scanning-a-case-of-gastric-carcinoma-with-bone-metastasis
#8
Pianpian Fan, Qin Wang, Chunyan Lu, Deicai Chen
Generalized high bone mineral density (BMD) on Dual-energy X-ray absorptiometry (DXA) scanning most commonly reflects metabolic bone disease. However, some malignancies could also stimulate the underlying processes. We reported that a 41-year-old female was referred for lumbago. She did not complain of any symptoms in the digestive system. DXA revealed high BMD in the lumbar vertebras. Marked increase in bone mass was observed in an X-ray of chest compared with one conducted 6 months previously. Additionally, an X-ray of the axial skeleton showed diffuse sclerotic change...
November 16, 2016: Postgraduate Medicine
https://www.readbyqxmd.com/read/27848006/clinical-fracture-risk-evaluated-by-hierarchical-agglomerative-clustering
#9
C Kruse, P Eiken, P Vestergaard
: Clustering analysis can identify subgroups of patients based on similarities of traits. From data on 10,775 subjects, we document nine patient clusters of different fracture risks. Differences emerged after age 60 and treatment compliance differed by hip and lumbar spine bone mineral density profiles. INTRODUCTION: The purposes of this study were to establish and quantify patient clusters of high, average and low fracture risk using an unsupervised machine learning algorithm...
November 16, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27845262/effect-of-pubertal-suppression-and-cross-sex-hormone-therapy-on-bone-turnover-markers-and-bone-mineral-apparent-density-bmad-in-transgender-adolescents
#10
Mariska C Vlot, Daniel T Klink, Martin den Heijer, Marinus A Blankenstein, Joost Rotteveel, Annemieke C Heijboer
Puberty is highly important for the accumulation of bone mass. Bone turnover and bone mineral density (BMD) can be affected in transgender adolescents when puberty is suppressed by gonadotropin-releasing hormone analogues (GnRHa), followed by treatment with cross-sex hormone therapy (CSHT). We aimed to investigate the effect of GnRHa and CSHT on bone turnover markers (BTMs) and bone mineral apparent density (BMAD) in transgender adolescents. Gender dysphoria was diagnosed based on diagnostic criteria according to the DSM-IV (TR)...
November 11, 2016: Bone
https://www.readbyqxmd.com/read/27834082/association-between-obesity-and-bone-mineral-density-by-gender-and-menopausal-status
#11
Mohammad Reza Salamat, Amir Hossein Salamat, Mohsen Janghorbani
BACKGROUND: We investigated whether there were gender differences in the effect of obesity on bone mineral density (BMD) based on menopausal status. METHODS: We assessed 5,892 consecutive patients 20 to 91 years old who were referred for dual-energy X-ray absorptiometry (DXA) scans. All subjects underwent a standard BMD scan of the hip (total hip and femoral neck) and lumbar spine (L1 to L4) using a DXA scan and body size assessment. Body mass index was used to categorize the subjects as normal weight, overweight, and obese...
November 4, 2016: Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27821253/bone-mineral-density-in-children-with-idiopathic-nephrotic-syndrome
#12
Ghada Mohamed El-Mashad, Mahmoud Ahmed El-Hawy, Sally Mohamed El-Hefnawy, Sanaa Mansour Mohamed
OBJECTIVES: To assess bone mineral density (BMD) in children with idiopathic nephrotic syndrome (NS) and normal glomerular filtration rate (GFR). METHODS: Cross-sectional case-control study carried out on 50 children: 25 cases of NS (16 steroid-sensitive [SSNS] and nine steroid-resistant [SRNS] under follow up in the pediatric nephrology unit of Menoufia University Hospital, which is tertiary care center, were compared to 25 healthy controls with matched age and sex...
November 5, 2016: Jornal de Pediatria
https://www.readbyqxmd.com/read/27821102/the-osteoporotic-fracture-prevention-program-in-rural-areas-ofra-a-protocol-for-a-cluster-randomized-health-care-fund-driven-intervention-in-a-routine-health-care-setting
#13
Kilian Rapp, Karin Kampe, Patrick Roigk, Hella Kircheisen, Clemens Becker, Ivonne Lindlbauer, Hans-Helmut König, Dietrich Rothenbacher, Gisela Büchele
BACKGROUND: Fragility fractures are one of the leading causes for disability in old people. The main underlying mechanisms are osteoporosis and falls. Evidence-based measures to prevent either falls or fractures are available. However, coordinated preventive approaches combining bone health and fall prevention are rare. The objective of the study is to evaluate a health care fund driven program, which encourages insured persons to adhere to national guidelines regarding bone health and physical activity and falls prevention...
November 8, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27815068/body-composition-and-metabolic-outcomes-after-96-weeks-of-treatment-with-ritonavir-boosted-lopinavir-plus-either-nucleoside-or-nucleotide-reverse-transcriptase-inhibitors-or-raltegravir-in-patients-with-hiv-with-virological-failure-of-a-standard-first-line
#14
Mark A Boyd, Janaki Amin, Patrick W G Mallon, Nagalingeswaran Kumarasamy, Johan Lombaard, Robin Wood, Ploenchan Chetchotisakd, Praphan Phanuphak, Lerato Mohapi, Iskandar Azwa, Waldo H Belloso, Jean-Michel Molina, Jennifer Hoy, Cecilia L Moore, Sean Emery, David A Cooper
BACKGROUND: Lipoatrophy is one of the most feared complications associated with the use of nucleoside or nucleotide reverse transcriptase inhibitors (N[t]RTIs). We aimed to assess soft-tissue changes in participants with HIV who had virological failure of a first-line antiretroviral (ART) regimen containing a non-nucleoside reverse transcriptase inhibitor plus two N(t)RTIs and were randomly assigned to receive a second-line regimen containing a boosted protease inhibitor given with either N(t)RTIs or raltegravir...
November 1, 2016: Lancet HIV
https://www.readbyqxmd.com/read/27810989/nonalcoholic-fatty-liver-disease-is-prevalent-in-women-with-prior-gestational-diabetes-mellitus-and-independently-associated-with-insulin-resistance-and-waist-circumference
#15
Signe Foghsgaard, Camilla Andreasen, Louise Vedtofte, Emilie S Andersen, Emilie Bahne, Charlotte Strandberg, Thora Buhl, Jens J Holst, Jens A Svare, Tine D Clausen, Elisabeth R Mathiesen, Peter Damm, Lise L Gluud, Filip K Knop, Tina Vilsbøll
OBJECTIVE: Type 2 diabetes increases the risk of nonalcoholic fatty liver disease (NAFLD), which is a potentially reversible condition but is also associated with progressive fibrosis and cirrhosis. Women with prior gestational diabetes mellitus (pGDM) have a higher risk for NAFLD. RESEARCH DESIGN AND METHODS: One hundred women without diabetes who had pGDM (median [interquartile range]: age 38.6 [6.4] years; BMI 31.0 [6.2] kg/m(2)) and 11 healthy control subjects without NAFLD (age 37...
November 3, 2016: Diabetes Care
https://www.readbyqxmd.com/read/27806112/the-clinical-and-biochemical-predictors-of-bone-mass-in-preterm-infants
#16
Justyna Czech-Kowalska, Edyta Czekuc-Kryskiewicz, Pawel Pludowski, Katarzyna Zaniuk, Maciej Jaworski, Anna Łuba, Karolina Grzybowska, Krystyna Piłat, Anna Dobrzanska
BACKGROUND: Metabolic bone disease of prematurity still occurs in preterm infants, although a significant improvement in neonatal care has been observed in recent decades. Dual-energy X-ray absorptiometry (DXA) is the precise technique for assessing bone mineral content (BMC) in preterm infants, but is not widely available. AIM: To investigate the clinical and biochemical parameters, including bone metabolism markers as potential predictors of BMC, in preterm infants up to 3 months corrected age (CA)...
2016: PloS One
https://www.readbyqxmd.com/read/27804242/association-between-body-mass-index-percentile-trajectories-in-infancy-and-adiposity-in-childhood-and-early-adulthood
#17
Soyang Kwon, Kathleen F Janz, Elena M Letuchy, Trudy L Burns, Steven M Levy
OBJECTIVE: To identify distinct body mass index (BMI) percentile trajectories during early childhood and examine adiposity levels in childhood and early adulthood according to the BMI percentile trajectories. METHODS: Iowa Fluoride Study cohort parents (n = 1,093) reported their child's anthropometric data on average six times between ages 0 and 23 months. A subset of the cohort underwent DXA scans at approximately age 8 years (n = 495) and again at approximately age 19 years (n = 314)...
November 2, 2016: Obesity
https://www.readbyqxmd.com/read/27778640/normal-pubertal-development-in-daughters-of-women-with-pcos-a-controlled-study
#18
Richard S Legro, Allen R Kunselman, Christy M Stetter, Carol L Gnatuk, Stephanie J Estes, Eleanor Brindle, Hubert W Vesper, Julianne C Botelho, Peter A Lee, William C Dodson
CONTEXT: Daughters of women with polycystic ovary syndrome (PCOS) are thought to be at increased risk for developing stigmata of the syndrome, but the ontogeny during puberty is uncertain. OBJECTIVE: To phenotype daughters (N = 76) of mothers with PCOS and daughters (N = 80) from control mothers for reproductive and metabolic parameters characteristic of PCOS. DESIGN, SETTING, AND PARTICIPANTS: Matched Case/Control Study, Penn State Hershey Medical Center, Non-Hispanic, Caucasian girls age 4-17 INTERVENTION: Obtain birth history, biometric, ovarian ultrasounds, whole body DXA scan for body composition, 2 hour glucose challenged salivary insulin levels and two timed urinary collections (12 hours overnight and 3 hours AM) for gonadotropins and sex steroids...
October 25, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27759979/comparison-of-body-fat-calculations-by-sex-and-puberty-status-in-obese-schoolchildren-using-two-and-four-compartment-body-composition-models
#19
Fabián Vásquez, Gabriela Salazar, Erik Díaz, Lydia Lera, Alyerina Anziani, Raquel Burrows
INTRODUCTION: Determine body composition changes in adiposity can assess an individual. OBJECTIVE: The objective of this study was to evaluate total body fat percentage based on two and four compartment models in obese Chilean school children, adjusting for differences in sex and puberty status. METHODS: Sixty-one obese school children (33 boys and 28 girls) between 8 and 13 years of age were evaluated. Two compartment measurements of body fat percentage considered isotope dilution, plethysmography, radiographic absorptiometry and bioelectrical impedance; using the four compartment model as a benchmark...
September 20, 2016: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/27759063/comparison-of-high-resolution-peripheral-quantitative-computerized-tomography-with-dual-energy-x-ray-absorptiometry-for-measuring-bone-mineral-density
#20
E Colt, M Akram, F X Pi Sunyer
BACKGROUND/OBJECTIVES: The objective of this study was to compare the measurement of areal bone mineral density (aBMD) by dual-energy X-ray absorptiometry (DXA) with the measurement of volumetric bone mineral density (vBMD) by high-resolution peripheral computerized tomography (HR-pQCT) in subjects with a wide range of body mass indices (BMI). SUBJECTS/METHODS: We scanned the arms and legs of 49 premenopausal women, aged 21-45 years, with BMI from 18.5 to 46.5, by HR-pQCT and found that there was a nonsignificant change in vBMD associated with increased BMI, whereas aBMD (DXA) was associated with a positive significant increase...
October 19, 2016: European Journal of Clinical Nutrition
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