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https://www.readbyqxmd.com/read/28210985/lumbar-disc-degeneration-was-not-related-to-spine-and-hip-bone-mineral-densities-in-chinese-facet-joint-osteoarthritis-may-confound-the-association
#1
Jianjiang Pan, Xuan Lu, Ge Yang, Yongmei Han, Xiang Tong, Yue Wang
: A sample of 512 Chinese was studied and we observed that greater disc degeneration on MRI was associated with greater spine DXA BMD. Yet, this association may be confounded by facet joint osteoarthritis. BMD may not be a risk factor for lumbar disc degeneration in Chinese. PURPOSE: Evidence suggested that lumbar vertebral bone and intervertebral disc interact with each other in multiple ways. The current paper aims to determine the association between bone mineral density (BMD) and lumbar disc degeneration using a sample of Chinese...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28204954/biopsy-vs-peripheral-computed-tomography-to-assess-bone-disease-in-ckd-patients-on-dialysis-differences-and-similarities
#2
I D B Marques, M J C L N Araújo, F G Graciolli, L M Dos Reis, R M Pereira, M R Custódio, V Jorgetti, R M Elias, E David-Neto, R M A Moysés
: Results from bone biopsy and high-resolution peripheral quantitative computed tomography (HR-pQCT) were compared in 31 CKD patients. There was an agreement mainly for cortical compartment that may represent a perspective on the fracture risk assessment. HR-pQCT also provided some clues on the turnover status, which warrants further studies. INTRODUCTION: Chronic kidney disease (CKD) patients are at high risk of bone disease. Although bone biopsy is considered the best method to evaluate bone disease, it is expensive and not always available...
February 16, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28204901/the-effect-of-hydration-status-on-the-measurement-of-lean-tissue-mass-by-dual-energy-x-ray-absorptiometry
#3
Clodagh M Toomey, William G McCormack, Phil Jakeman
PURPOSE: Athletes cycle between exercise and recovery. Exercise invokes changes in total body water from thermal sweating, muscle and hepatic glycogen depletion and metabolic water loss. Recovery from exercise results in rehydration, substrate repletion, and possible glycogen supercompensation. Such changes may corrupt the measurement of hydrated tissues, such as lean tissue mass (LTM), by dual-energy X-ray absorptiometry (DXA). The purpose of this study was to determine the effect of exercise and thermal dehydration and subsequent glycogen supercompensation on DXA-based measurement of body composition...
February 16, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28203357/wrist-bone-mineral-density-utility-in-diagnosing-hip-osteoporosis-in-postmenopausal-women
#4
Bina Eftekhar-Sadat, Mostafa Ghavami, Vahideh Toopchizadeh, Masood Ghahvechi Akbari
BACKGROUND: Osteoporosis is a common bone disease that increases with age. Wrist bone mineral density (BMD) has significant correlation with other skeletal sites and it could be used as a diagnostic method for osteoporosis. The purpose of this study was to evaluate the role of wrist BMD in diagnosing osteoporosis in postmenopausal women. METHODS: In this cross-sectional study, 99 postmenopausal women with mean age of 57 ± 6.9 (range 50-76) years were evaluated...
December 2016: Therapeutic Advances in Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28202349/muscle-ultrasound-and-sarcopenia-in-older-individuals-a-clinical-perspective
#5
REVIEW
Andrea Ticinesi, Tiziana Meschi, Marco V Narici, Fulvio Lauretani, Marcello Maggio
INTRODUCTION: A precise quantitative measurement of skeletal muscle mass is fundamental for diagnosing sarcopenia in older individuals. The current techniques of assessment, including dual-energy x-ray absorptiometry (DXA), bioimpedance analysis (BIA), and magnetic resonance imaging (MRI) are either difficult to perform in everyday clinical practice or biased by concurrent clinical confounders. B-mode muscle ultrasound can be helpful in assessing muscle mass and architecture, and thus possibly useful for diagnosing or screening sarcopenia...
February 12, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28199411/cortical-porosity-not-superior-to-conventional-densitometry-in-identifying-hemodialysis-patients-with-fragility-fracture
#6
Bernhard Bielesz, Janina M Patsch, Lukas Fischer, Marija Bojic, Wolfgang Winnicki, Michael Weber, Daniel Cejka
Hemodialysis (HD) patients face increased fracture risk, which is further associated with elevated risk of hospitalization and mortality. High-resolution peripheral computed tomography (HR-pQCT) has advanced our understanding of bone disease in chronic kidney disease by characterizing distinct changes in both the cortical and trabecular compartments. Increased cortical porosity (Ct.Po) has been shown to be associated with fracture in patients with osteopenia or in postmenopausal diabetic women. We tested whether the degree of Ct...
2017: PloS One
https://www.readbyqxmd.com/read/28199328/association-of-pvuii-and-xbai-polymorphisms-on-estrogen-receptor-alpha-esr1-gene-to-changes-into-serum-lipid-profile-of-post-menopausal-women-effects-of-aging-body-mass-index-and-breast-cancer-incidence
#7
Neuza Felix Gomes-Rochette, Letícia Soncini Souza, Bruno Otoni Tommasi, Diego França Pedrosa, Sérgio Ragi Eis, Irani do Carmo Francischetto Fin, Fernando Luiz Herkenhoff Vieira, Jones Bernardes Graceli, Letícia Batista Azevedo Rangel, Ian Victor Silva
Estrogen is a steroidal hormone involved in several physiological functions in the female body including regulation of serum lipid metabolism and breast cancer (BC). Estrogen actions on serum lipids mostly occur through its binding to intracellular Estrogen Receptor alpha (ERalpha) isoform, expressed in most of tissues. This gene (ESR1) exhibit many polymorphic sites (SNPs) located either on translated and non-translated regions that regulate ERalpha protein expression and function. This paper aimed to investigate the association of two intronic SNPs of ESR1 gene, namely c454-397T>C (PvuII) and c454-351A>G (XbaI) to alterations in serum levels of total cholesterol (T-chol), total lipid (TL), low density lipoprotein cholesterol (LDL), high density lipoprotein (HDL), and triglycerides (TG) in a cohort of post-menopausal women...
2017: PloS One
https://www.readbyqxmd.com/read/28197890/relationships-among-diet-physical-activity-and-dual-plane-dual-energy-x-ray-absorptiometry-bone-outcomes-in-pre-pubertalgirls
#8
Jie Ren, Lynn S Brann, Kay S Bruening, Tamara A Scerpella, Jodi N Dowthwaite
: In pre-pubertal girls, nutrient intakes and non-aquatic organized activity were evaluated as factors in vertebral body bone mass, structure, and strength. Activity, vitamin B12, and dietary fiber predicted bone outcomes most consistently. Exercise and vitamin B12 appear beneficial, whereas high fiber intake appears to be adverse for vertebral body development. PURPOSE: Childhood development sets the baseline for adult fracture risk. Most studies evaluate development using postero-anterior (PA) dual-energy X-ray absorptiometry (DXA) areal bone mineral density, bone mineral content, and bone mineral apparent density...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28197643/machine-learning-principles-can-improve-hip-fracture-prediction
#9
Christian Kruse, Pia Eiken, Peter Vestergaard
Apply machine learning principles to predict hip fractures and estimate predictor importance in Dual-energy X-ray absorptiometry (DXA)-scanned men and women. Dual-energy X-ray absorptiometry data from two Danish regions between 1996 and 2006 were combined with national Danish patient data to comprise 4722 women and 717 men with 5 years of follow-up time (original cohort n = 6606 men and women). Twenty-four statistical models were built on 75% of data points through k-5, 5-repeat cross-validation, and then validated on the remaining 25% of data points to calculate area under the curve (AUC) and calibrate probability estimates...
February 14, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28194480/evaluation-of-bone-mineral-density-and-microarchitectural-parameters-by-dxa-and-hr-pqct-in-37-children-and-adults-with-x-linked-hypophosphatemic-rickets
#10
G P Colares Neto, R M R Pereira, J C Alvarenga, L Takayama, M F A Funari, R M Martin
: In X-linked hypophosphatemic (XLH) rickets, dual-energy X-ray absorptiometry (DXA) measurements must be analyzed with caution. High-resolution peripheral quantitative computed tomography (HR-pQCT) analysis suggested that XLH primarily affects the cancellous compartment, with the tibia more affected than the radius. Effective treatment of XLH appears to positively affect bone mineralization, mainly in the bone cortex. INTRODUCTION: The purpose of this study is to evaluate bone mineral density (BMD) and microarchitecture in 37 patients (13 children and 24 adults) with XLH confirmed by PHEX mutations from a tertiary center compared to healthy controls...
February 13, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28193268/adipokines-insulin-resistance-and-adiposity-as-a-predictors-of-metabolic-syndrome-in-child-survivors-of-lymphoma-and-acute-lymphoblastic-leukemia-of-a-developing-country
#11
Lourdes Barbosa-Cortés, Mardia López-Alarcón, Juan Manuel Mejía-Aranguré, Miguel Klünder-Klünder, María Del Carmen Rodríguez-Zepeda, Hugo Rivera-Márquez, Alan de la Vega-Martínez, Jorge Martin-Trejo, Juan Shum-Luis, Karina Solis-Labastida, Enrique López-Aguilar, Guadalupe Matute-González, Roberto Bernaldez-Rios
BACKGROUND: There is a growing body of evidence indicating that pediatric survivors of cancer are at a greater risk of developing metabolic syndrome. This study evaluated some probable predictors of metabolic syndrome (MS), such as leptin and adiponectin concentrations, the leptin/adiponectin ratio, insulin resistance, and adiposity, in a sample of child survivors of lymphoma and leukemia in Mexico City. METHODS: Fifty two children (leukemia n = 26, lymphoma n = 26), who were within the first 5 years after cessation of therapy, were considered as eligible to participate in the study...
February 13, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28191881/assessment-of-child-anthropometry-in-a-large-epidemiologic-study
#12
Amy L Louer, Denise N Simon, Karen M Switkowski, Sheryl L Rifas-Shiman, Matthew W Gillman, Emily Oken
A high proportion of children have overweight and obesity in the United States and other countries. Accurate assessment of anthropometry is essential to understand health effects of child growth and adiposity. Gold standard methods of measuring adiposity, such as dual X-ray absorptiometry (DXA), may not be feasible in large field studies. Research staff can, however, complete anthropometric measurements, such as body circumferences and skinfold measurements, using inexpensive portable equipment. In this protocol we detail how to obtain manual anthropometric measurements from children, including standing and sitting height, weight, waist circumference, hip circumference, mid-upper arm circumference, triceps skinfold thickness, and subscapular skinfold thickness, and procedures to assess the quality of these measurements...
February 2, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28186836/assessment-of-osteoporotic-alterations-in-type-2-diabetes-a-retrospective-study
#13
Luciana Munhoz, Arthur Rodriguez Gonzalez Cortes, Emiko Saito Arita
OBJECTIVE: To analyse the influence of type 2 diabetes on bone mineral density and panoramic radiomorphometry in postmenopausal women, comparing with results from non-diabetics postmenopausal women. METHODS: A total of 228 postmenopausal women (mean age: 59.51 ± 11.08 years) were included in this study. Demographics, T- and Z- scores from peripheral dual x-ray absorptiometry (DXA) and mandibular cortical index (MCI) from panoramic radiographs were assessed. Mean comparison between results for diabetics and non-diabetic was carried out with the student T test...
February 10, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28185216/clinical-evaluation-of-bone-strength-and-fracture-risk
#14
REVIEW
Chantal M J de Bakker, Wei-Ju Tseng, Yihan Li, Hongbo Zhao, X Sherry Liu
PURPOSE OF REVIEW: This paper seeks to evaluate and compare recent advances in the clinical assessment of the changes in bone mechanical properties that take place as a result of osteoporosis and other metabolic bone diseases and their treatments. RECENT FINDINGS: In addition to the standard of DXA-based areal bone mineral density (aBMD), a variety of methods, including imaging-based structural measurements, finite element analysis (FEA)-based techniques, and alternate methods including ultrasound, bone biopsy, reference point indentation, and statistical shape and density modeling, have been developed which allow for reliable prediction of bone strength and fracture risk...
February 2017: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/28181695/later-age-at-onset-of-independent-walking-is-associated-with-lower-bone-strength-at-fracture-prone-sites-in-older-men
#15
Alex Ireland, Stella Muthuri, Joern Rittweger, Judith E Adams, Kate A Ward, Diana Kuh, Rachel Cooper
Later age at onset of independent walking is associated with lower leg bone strength in childhood and adolescence. However it is unknown whether these associations persist into older age, or whether they are evident at axial (central) or upper limb sites. Therefore we examined walking age obtained at 2y and bone outcomes obtained by dual-energy X-ray absorptiometry (DXA) and peripheral quantitative computed tomography (pQCT) scans at 60-64y in a nationally-representative cohort study of British people, the MRC National Survey of Health and Development...
February 9, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28179094/pediatric-onset-inflammatory-bowel-disease-poses-risk-for-low-bone-mineral-density-at-early-adulthood
#16
Anat Guz-Mark, Firas Rinawi, Oxana Egotubov, Ilan Shimon, Raanan Shamir, Amit Assa
BACKGROUND: Inflammatory bowel disease (IBD) is known to pose a risk for low bone mineral density (BMD) in children and adults. We aimed to evaluate the impact of pediatric-onset IBD on BMD in adulthood. METHODS: Records of pediatric-IBD patients were retrospectively reviewed for documentation of dual-energy X-ray absorptiometry (DXA) scans in adulthood. BMD was expressed as z-score. RESULTS: Sixty one patients were included. Mean (±SD) age at diagnosis was 14...
January 20, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28178601/bone-health-among-older-adults-in-taiwan
#17
Wei-Jen Wang, Kuan-Liang Kuo, Chen-Kun Liaw, Tai-Yin Wu, Wei-Chu Chie, Jer-Min Chen
BACKGROUND AND PURPOSE: There has been much discussion about the risk factors for osteoporosis, but studies involving elderly population in Taiwan are minimal. We aimed to describe variables related to osteoporosis among community dwelling older people in Taiwan. METHODS: This is a cross-sectional study. The 671 participants were randomly selected from 3680 examinees of the annual Senior Citizens Health Examination in year 2010. Participants were interviewed with a detailed questionnaire, and 91 of them were invited for dual-energy X-ray absorptiometry (DXA)...
January 12, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28177368/nursery-pig-growth-performance-and-tissue-accretion-modulation-due-to-porcine-epidemic-diarrhea-virus-or-porcine-deltacoronavirus-challenge
#18
S M Curry, K A Gibson, E R Burrough, K J Schwartz, K J Yoon, N K Gabler
Porcine epidemic diarrhea virus (PEDV) and porcine deltacoronavirus (PDCoV) are both members of the family which induce clinical signs of diarrhea, dehydration, and in some circumstances, mortality. Most research has been focused on isolation, genome sequencing, pathogenicity, and virulence of these viruses, but there is little information on long-term growth performance and tissue accretion of pigs inoculated with PEDV or PDCoV. Therefore, our objective was to determine the effect of PEDV or PDCoV infection on growth performance and tissue accretion over 42 d following inoculation...
January 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28177150/commentary-the-skeleton-is-a-storehouse-of-mineral-that-is-plundered-during-lactation-and-fully-replenished-afterwards
#19
Christopher S Kovacs
During lactation, mammals resorb mineral from the maternal skeleton to provide calcium to milk. Rodents lose 25-35% of skeletal ash weight, ash calcium content, and bone mineral content by DXA, and have compromised material properties of bone, as assessed by crushing vertebrae and 3-pt bend tests of femora or tibiae. The strength, stiffness, and toughness of vertebrae, femora, and tibiae are reduced by as much as 60%. The effects of lactation are not uniform throughout the skeleton, but instead resorption is much more marked in the trabecular-rich spine than in the appendicular skeleton or whole body...
February 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28176415/visceral-fat-is-associated-with-the-racial-differences-in-liver-fat-between-black-and-white-adolescent-boys-with-obesity
#20
SoJung Lee, Jennifer L Kuk
OBJECTIVE: We examined whether racial differences in liver fat are associated with the differences in abdominal fat distribution or cardiorespiratory fitness (CRF). METHODS: Participants included 57 black and white obese boys (12-18 years). Total and abdominal fat was measured by dual-energy X-ray absorptiometry (DXA) and magnetic resonance imaging, respectively. CRF was measured using a maximal graded treadmill test with the use of standard open-circuit spirometry techniques until volitional fatigue...
February 8, 2017: Pediatric Diabetes
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