Consulta: subjectFacets:"Bone mineral density"
Registros recuperados: 31
Data/hora: 06/06/2024 00:38:25

Densitometric Analysis of the Human Ulna
Provedor de dados: 77
Autores: Aguado-Henche,S; Clemente de Arriba,C; Carrascosa-Sánchez,J.
This study describes the distribution of the normal bone mass in the mature human ulna, as knowledge of distribution may provide information to orthopaedic surgeons for the treatment of such fractures while advancing the understanding of the responses of osteosynthesis elements during bone repair. A random sample of 41 dry ulnas was studied with a DXA system using a Norland XR-26 densitometer. Two projections were performed, lateral and antero-posterior. In both projections five regions of interest (ROI) were selected: proximal (ROI 1), proximal-intermediate (ROI 2), intermediate (ROI 3), distal-intermediate (ROI 4) and distal (ROI 5). All statistical calculations were performed using Stat graphics Plus (version 5.1) and SPSS (version 15.0). Bone mineral...
Tipo: Journal article
Palavras-chave: Densitometry; Ulna; Bone mineral density; Bone mineral content; Elbow.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000300016

The Effects of Ovariectomy and Naproxen Treatment on the Strength of Femoral Midshaft and Molar Alveolar Region in Rats
Provedor de dados: 77
Autores: Turkozan,N. Y; Ulusoy,A. T; Balcioglu,H. A; Bal,F; Ozel,S.
The goal of the present study was to investigate the effects of ovariectomy and naproxen treatment on both femoral and mandibular bone mass and biomechanical competence. Sprague-Dawley rats were used and divided into five groups: baseline, sham ovariectomized, ovariectomized, sham ovariectomized + naproxen treatment, ovariectomized + naproxen treatment. Mandibles and femurs of the rats were extracted and bone mineral density of the extracted specimens were determined. The volumes and ash weights of the femurs and mandibles were estimated. Maximum loads of the femurs and mandibles were determined by using a three point bending test. Ovariectomy decreased bone mineral density of the femoral midshaft, however naproxen prevented this decrease. Neither...
Tipo: Journal article
Palavras-chave: Ovariectomy; Naproxen; Bone mineral density; Maximum load.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300007

Experimental investigation of bone mineral density in Thoroughbreds using quantitative computed tomography
Provedor de dados: 19
Autores: YAMADA, Kazutaka; SATO, Fumio; HIGUCHI, Tohru; NISHIHARA, Kaori; KAYANO, Mitsunori; SASAKI, Naoki; NAMBO, Yasuo.
Bone mineral density (BMD) is one of the indications of the strength and health. BMD measured by quantitative computed tomography (QCT) was compared with that measured by dual energy X-ray absorptiometry (DXA) and radiographic bone aluminum equivalence (RBAE). Limbs were removed from horses that had been euthanized for reasons not associated with this study. Sixteen limbs (left and right metacarpals and metatarsals) from 4 horses were used to compare BMD as measured by QCT with those measured by DXA and RBAE. There was a strong correlation between BMD values measured by QCT and those measured by DXA (R2=0.85); correlation was also observed between values obtained by QCT and those obtained by RBAE (R2=0.61). To investigate changes in BMD with age, 37 right...
Palavras-chave: Bone mineral density; Dual energy X-ray absorptiometry; Quantitative computed tomography; Radiographic bone aluminum equivalence; Thoroughbred.
Ano: 2015
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4182

Experimental assessment of bone mineral density using quantitative computed tomography in Holstein dairy cows
Provedor de dados: 19
Autores: MAETANI, Ayami; ITOH, Megumi; NISHIHARA, Kahori; AOKI, Takahiro; OHTANI, Masayuki; SHIBANO, Kenichi; KAYANO, Mitsunori; YAMADA, Kazutaka; 伊藤, めぐみ; 滄木, 孝弘; 芝野, 健一; 茅野, 光範; 山田, 一孝.
The aim of this study was to assess the measurement of bone mineral density (BMD) by quantitative computed tomography (QCT), comparing the relationships of BMD between QCT and dual-energy X-ray absorptiometry (DXA) and between QCT and radiographic absorptiometry (RA) in the metacarpal bone of Holstein dairy cows (n=27). A significant positive correlation was found between QCT and DXA measurements (r=0.70, P&lt;0.01), and a significant correlation was found between QCT and RA measurements (r=0.50, P&lt;0.01). We conclude that QCT provides quantitative evaluation of BMD in dairy cows, because BMD measured by QCT showed positive correlations with BMD measured by the two conventional methods: DXA and RA.
Palavras-chave: Bone mineral density; Dairy cow; Dual-energy X-ray absorptiometry; Quantitative computed tomography; Radiographic absorptiometry.
Ano: 2016
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4321

Bone densitometry and calcium serum levels in chickens treated with filtered or unfiltered water
Provedor de dados: 89
Autores: Amoroso,L; Baraldi,ASM; Barreiro,FR; Pacheco,MR; Alva,JCR; Soares,NM; Pacheco,LG; Melaré,MC.
The aim of this study was to evaluate whether the drinking water of the School of Agricultural and Veterinary Sciences, UNESP, Jaboticabal, Brazil, affected bone mineral density and serum calcium levels of 14-, 21-, and 45-day-old broilers. Bone mineral density (BMD) of the tibiae was assessed using optical densitometry radiographic technique and serum calcium levels. Tibial BMD increased as broilers aged, and achieved its peak at 45 days of age. It was higher in the distal epiphysis of the birds that ingested filtered water (p&lt;0.05) compared with those supplied with unfiltered water. Therefore, it is concluded that filtered water promoted better bone quality in relative to those ingested unfiltered water.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Broilers; Serum calcium levels; Tibia; Water quality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400013

Bone mineral density: review
Provedor de dados: 89
Autores: Almeida Paz,ICL; Bruno,LDG.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Bone quality; Densitometry and poultry.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200001

Tibial dyschondroplasia and bone mineral density
Provedor de dados: 89
Autores: Almeida,Paz ICL; Mendes,AA; Takita,TS; Vulcano,LC; Guerra,PC; Wescheler,FS; Garcia,RG.
This study was carried out at Faculdade de Medicina Veterinária e Zootecnia, UNESP, Botucatu-SP, Brazil. The aim was to establish the normal values of bone mineral density (BMD) expressed in millimeters of aluminum in the tibia of broiler chickens using optical densitometry of radiographs. Four hundred Cobb male chicks were reared from 1 to 40 days of age, when 40 of them were selected and the right femur-tibia articulation was radiographed. Radiographs were taken with the X-ray equipment calibrated for 45 kvp and 3.2 mAs and a focus-to-film distance of 90 cm. An aluminum phantom ASTM-6063 consisting of 20 ladder steps with graduate density was placed parallel to the area to be radiographed and used as a densitometry reference standard. Radiograph images...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone; Bone mineral density; Optical radiographic densitometry; Tibial dyschondroplasia.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400003

Quality parameters of the tibiae and femora of ostriches
Provedor de dados: 89
Autores: Almeida Paz,ICL; Mendes,AA; Balog,A; Almeida,ICL; Martins,MRFB; Vulcano,LC; Komiyama,CM.
An experiment was carried out to establish mean bone quality values of the tibiae and femora of ostriches and to evaluate these bones. The right leg bones of 10 males and 10 female African Black ostriches were evaluated. Birds were radiographed immediately after slaughter (during bleeding), with the aid of a portable X-ray apparatus. The obtained radiographs were scanned and bone mineral density means were obtained using software. Bone strength, Seedor index, and dry matter percentage were evaluated and correlated to weight gain during the finishing period (3-13 months of age). Mean values of the evaluated bone quality traits, not previously found in literature, were established. There were no significant differences between males and females in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bones; Bone mineral density; Bone quality; Bone strength; Ostriches.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300005

Edible Giblets and Bone Mineral Characteristics of Two Slow-Growing Chicken Genotypes Reared in an Organic System
Provedor de dados: 89
Autores: Eleroğlu,H; Yıldırım,A; Duman,M; Şekeroğlu,A.
ABSTRACT This study was conducted to compare edible giblets weight, tibial bone mineral density (BMD), and bone mineral content (BMC) of two slow-growing broiler genotypes (Hubbard S757; S757 and Hubbard Grey Barred JA; GB-JA) reared with outdoor access, and to determine the relationship between these variables. Day-old chicks (straight-run) of the genotypes S757 (n=120) and GB-JA (n=120) were housed for 98 days. Each genotype was assigned to six pens of 20 birds each. Birds were reared in indoor floor pens and moving shelters with outdoor access (during daylight hours). Absolute body (BW), heart (HW), spleen (SW), liver (LW), gizzard (GW), and abdominal fat pad (AFW) weights of the genotype S757 and male birds were statistically higher than that of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic production; Broiler strain; Bone mineral density; Bone mineral content.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100001

Study on the bone mineral density of broiler suffering femoral joint degenerative lesions
Provedor de dados: 89
Autores: ICL,Almeida Paz; Mendes,AA; Balog,A; Vulcano,LC; Ballarin,AW; Almeida,ICL; Takahashi,SE; Komiyama,CM; Silva,MC; Cardoso,KFG.
An experiment was carried out with male and females broilers of two different commercial breeds to evaluate bone mineral density of the right femur head. A number of 600 one-day-old broilers were raised in an experimental poultry house up to 42 days of age at the School of Veterinary Medicine and Animal Science of UNESP, Botucatu, Brazil. After slaughter, three males and three females in each breed in each of the established gross scores were selected. Their femora heads were submitted to gross examination, and subsequently the thighs were submitted to the Veterinary Hospital for radiographic analysis. Femora were also submitted to bone resistance, Seedor index, and dry matter content analyses. All these bone quality characteristics were different between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Broilers; Femoral degeneration; Femur; Genetics.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200005

Glycosaminoglycans and vitamin C in ovo feeding affects bone characteristics of chicks
Provedor de dados: 96
Autores: Santos,Elaine Talita; Sgavioli,Sarah; Castiblanco,Diana Maryuri Correa; Domingues,Carla Heloísa de Faria; Quadros,Thays Cristina Oliveira de; Borges,Liliana Longo; Petrolli,Tiago Goulart; Baraldi-Artoni,Silvana Martinez.
ABSTRACT Different levels of glycosaminoglycans (chondroitin sulfate and glucosamine sulfate) and vitamin C were injected in ovo to determine whether additive use influences the incubation parameters and bone characteristics of posthatch chicks. Hatchability was not affected by addition of glycosaminoglycans and vitamin C in ovo. However, chicks that received 4 μg additive showed 2.86% reduction in total mortality when compared with chicks from non-injected eggs. Moreover, tibia area and femur bone mineral density increased in chicks from eggs injected with 2.16 and 6.00 μg of additive, respectively. In ovo feeding with glycosaminoglycans and vitamin C can benefit bone development in embryos and reduce total mortality during the incubation period.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascorbic acid; Bone mineral density; Bone strength; Chondroitin; Glucosamine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100538

Hydrogen Peroxide Induced Oxidative Damage on Mineral Density and Mechanical Properties of Bone
Provedor de dados: 52
Autores: Cicek,Ekrem; Cakmak,Enes.
ABSTRACT Hydrogen peroxide is a common reactive oxygen species involved in the catalytic mechanism though it is toxic to cells due to its oxidative nature. This work investigates the effects of hydrogen peroxide induced oxidative damage on bone mineral density and mechanical properties of bone which is primarily a composite material composed primarily of collagen fibers and biominerals. Sheep leg bones were exposed to hydrogen peroxide for a week. Bone mineral density was measured by using dual energy X-ray absorptiometry. Compressive modulus tests were applied to bone in order to determine mechanical properties. Our study shows that the hydrogen peroxide induced oxidative stress has negative effects on bone mineral density and stiffness. We observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Compressive modulus; Hydrogen peroxide; Reactive oxygen species.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100320

Determination and padronization of normal values of bone mineral density (BMD) of the acessory carpus bone in young Thoroughbred horse using optical densitometry in radiographic image
Provedor de dados: 62
Autores: Vulcano,Luiz Carlos; Santos,Flavio Augusto Marques dos.
The bone mineral density (BMD) of the accessory carpus bone was measured (in aluminum milimeters - mmAl) in 12 female and 12 male thoroughbred horses aging from 12 months old until the moment of complete closure of the radio distal epiphysis, using optical densitometry in radiographic images. Evaluation was made using a software specially developed for optical density measurement in X-ray films, containing the radiographic image of the accessory carpus bone, the region of soft parts adjacent to the accessory carpus and the degrees of an aluminum stepwedge, used to measure BMD value (average of the interest region established on the accessory carpus bone corresponding to the value on the stepwedge in milimeters). BMD values did not show differences between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Horse; Bone mineral density; Accessory carpus.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962003000700008

Impaired bone mineral accrual in prepubertal HIV-infected children: a cohort study
Provedor de dados: 55
Autores: Palchetti,Cecília Zanin; Szejnfeld,Vera Lúcia; Succi,Regina Célia de Menezes; Patin,Rose Vega; Teixeira,Patrícia Fonseca; Machado,Daisy Maria; Oliveira,Fernanda Luisa Ceragioli.
ABSTRACT  OBJECTIVE:  To evaluate bone mass accrual and determine the influence of clinical, anthropometric, dietary and biochemical parameters on bone mass.  METHODS:  A cohort study including 35 prepubertal HIV-infected children, between 7 and 12 years, attended at a referral center. At time 1 (T1) and time 2 (T2), patients were assessed according to clinical, anthropometric, dietary, biochemical parameters and bone mineral density (BMD). At T2, patients were divided into prepubertal and pubertal.  RESULTS:  Despite the increase in bone mass absolute values, there was no improvement in lumbar spine BMD (LSBMD) Z-score (p = 0.512) and worsening in total body BMD (TBMD) Z-score (p = 0.040). Pubertal patients (n = 19) showed higher bone mineral content...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; Child; Body composition; Bone mineral density.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702015000600623

Lack of relationship between glycemic control and bone mineral density in type 2 diabetes mellitus
Provedor de dados: 56
Autores: Cutrim,D.M.S.L.; Pereira,F.A.; Paula,F.J.A. de; Foss,M.C.
We assessed the effect of chronic hyperglycemia on bone mineral density (BMD) and bone remodeling in patients with type 2 diabetes mellitus. We investigated 42 patients with type 2 diabetes under stable control for at least 1 year, 22 of them with good metabolic control (GMC: mean age = 48.8 ± 1.5 years, 11 females) and 20 with poor metabolic control (PMC: mean age = 50.2 ± 1.2 years, 8 females), and 24 normal control individuals (CG: mean age = 46.5 ± 1.1 years, 14 females). We determined BMD in the femoral neck and at the L2-L4 level (DEXA) and serum levels of glucose, total glycated hemoglobin (HbA1), total and ionic calcium, phosphorus, alkaline phosphatase, follicle-stimulating hormone, intact parathyroid hormone (iPTH), 25-hydroxyvitamin D (25-OH-D),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetes mellitus; Osteoporosis; Bone mineral density; Glycemic control; Bone markers; Insulin-like growth factor I.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000200008

Impact of marked weight loss induced by bariatric surgery on bone mineral density and remodeling
Provedor de dados: 56
Autores: Pereira,F.A.; Castro,J.A.S. de; Santos,J.E. dos; Foss,M.C.; Paula,F.J.A.
Data about the impact of bariatric surgery (BS) and subsequent weight loss on bone are limited. The objective of the present study was to determine bone mineral density (BMD), bone remodeling metabolites and hormones that influence bone trophism in premenopausal women submitted to BS 9.8 months, on average, before the study (OGg, N = 16). The data were compared to those obtained for women of normal weight (CG, N = 11) and for obese women (OG, N = 12). Eight patients in each group were monitored for one year, with the determination of BMD, of serum calcium, phosphorus, magnesium, parathyroid hormone, 25-hydroxyvitamin D, insulin-like growth factor-I (IGF-I) and osteocalcin, and of urinary calcium and deoxypyridinoline. The biochemical determinations were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteoporosis; Obesity; Bone mineral density; Bone turnover; Bariatric surgery.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000400009

Bone mineral density in juvenile systemic lupus erythematosus
Provedor de dados: 56
Autores: Castro,T.C.M.; Terreri,M.T.; Szejnfeld,V.L.; Castro,C.H.M.; Fisberg,M.; Gabay,M.; Hilário,M.O.E.
We evaluated spine bone mineral density (BMD) in Brazilian children with juvenile systemic lupus erythematosus (JSLE) in order to detect potential predictors of reduction in bone mass. A cross-sectional study of BMD at the lumbar spine level (L2-L4) was conducted on 16 female JSLE patients aged 6-17 years. Thirty-two age-matched healthy girls were used as control. BMD at the lumbar spine was measured by dual-energy X-ray absorptiometry. Weight, height and pubertal Tanner stage were determined in patients and controls. Disease duration, mean daily steroid doses, mean cumulative steroid doses and JSLE activity measured by the systemic lupus erythematosus disease activity index (SLEDAI) were determined for all JSLE patients based on their medical charts. All...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Systemic lupus erythematosus; Children; Adolescents; Bone mineral density; Osteoporosis; Corticosteroids.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002001000008

Bone mineral density and inflammatory bowel disease severity
Provedor de dados: 56
Autores: Lima,C.A.; Lyra,A.C.; Mendes,C.M.C.; Lopes,M.B.; Coqueiro,F.G.; Rocha,R.; Santana,G.O.
Inflammatory bowel disease (IBD) is associated with low bone mineral density (BMD). In this study, the association between disease severity and BMD in patients with IBD was evaluated. Associations between BMD and the Montreal classification, disease activity and drug therapy were also tested. A cross-sectional prevalence study with a comparison group was conducted. One hundred and twenty-eight patients were evaluated: 68 patients with ulcerative colitis (UC), and 60 with Crohn's disease (CD). The control group consisted of 67 healthy subjects. All patients and controls had BMD measured and in IBD patients, current medications, hospitalization, and disease location, extent and phenotype, according to the Montreal classification, were recorded. Multiple...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Ulcerative colitis; Crohn’s disease; Inflammatory bowel disease; Osteoporosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200614

Bone mineral density of the lumbar spine of Brazilian children and adolescents aged 6 to 14 years
Provedor de dados: 56
Autores: Fonseca,A.S.M.; Szejnfeld,V.L.; Terreri,M.T.; Goldenberg,J.; Ferraz,M.B.; Hilário,M.O.E.
The authors performed a study of bone mass in eutrophic Brazilian children and adolescents using dual-energy X-ray absorptiometry (DXA) in order to obtain curves for bone mineral content (BMC) and bone mineral density (BMD) by chronological age and correlate these values with weight and height. Healthy Caucasian children and adolescents, 120 boys and 135 girls, 6 to 14 years of age, residents of São Paulo, Brazil, were selected from the Pediatric Department outpatient clinic of Hospital São Paulo (Universidade Federal de São Paulo). BMC, BMD and the area of the vertebral body of the L2-L4 segment were obtained by DXA. BMC and BMD for the lumbar spine (L2-L4) presented a progressive increase between 6 and 14 years of age in both sexes, with a distribution...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Lumbar spine densitometry; Children; Adolescents.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000300008

Longitudinal evaluation of hepatic osteodystrophy in children and adolescents with chronic cholestatic liver disease
Provedor de dados: 56
Autores: Taveira,A.T.A.; Pereira,F.A.; Fernandes,M.I.M.; Sawamura,R.; Nogueira-Barbosa,M.H.; Paula,F.J.A.
Bone mass loss is a major complication of chronic cholestatic liver disease (CCD). However, the long-term impact of CCD on bone mass acquisition is unknown. We longitudinally assessed bone mineral density (BMD) and factors involved in bone remodeling in 9 children and adolescents with CCD Child-Pugh A (5 boys/4 girls) and in 13 controls (6 boys/7 girls). The groups were evaluated twice, at baseline (T0) and after 3 years (T1), when osteocalcin, deoxypyridinoline, 25-hydroxyvitamin-D, parathyroid hormone, insulin-like growth factor-I (IGF-I), and BMD (L1-L4, proximal femur and total body) were determined. Serum levels of receptor activator for nuclear factor kB ligand (RANKL) and osteoprotegerin were measured only at T1. Lumbar spine BMD was reanalyzed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatic osteodystrophy; Insulin-like growth factor-I; Osteoporosis; Bone mineral density; Bone remodeling.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010001100017

Analysis of the diagnostic presentation profile, parathyroidectomy indication and bone mineral density follow-up of Brazilian patients with primary hyperparathyroidism
Provedor de dados: 56
Autores: Oliveira,U.E.M.; Ohe,M.N.; Santos,R.O.; Cervantes,O.; Abrahão,M.; Lazaretti-Castro,M.; Vieira,J.G.H.; Hauache,O.M.
Primary hyperparathyroidism is an endocrine disorder with variable clinical expression, frequently presenting as asymptomatic hypercalcemia in Western countries but still predominantly as a symptomatic disease in developing countries. The objective of this retrospective study was to describe the diagnostic presentation profile, parathyroidectomy indication and post-surgical bone mineral density follow-up of patients with primary hyperparathyroidism seen at a university hospital. We found 115 patients (92 women, median age 56 years) with primary hyperparathyroidism diagnosed during the last 20 years. We defined symptomatic patients based on the presence of any classical symptom affecting bone, kidney or the neuromuscular system. Surgical criteria followed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Primary hyperparathyroidism; Hypercalcemia; Clinical presentation; Parathyroidectomy; Bone mineral density.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000400010

Impact of congenital calcitonin deficiency due to dysgenetic hypothyroidism on bone mineral density
Provedor de dados: 56
Autores: Daripa,M.; Paula,F.J.A.; Rufino,A.C.B.; Foss,M.C.
The objective of the present study was to determine the effect of chronic calcitonin deficiency on bone mass development. The results of 11 patients with thyroid dysgenesis (TD) were compared to those of 17 normal individuals (C) and of 9 patients with other forms of hypothyroidism (OH): 4 with hypothyroidism due to inborn errors of thyroid hormone synthesis and 5 with Hashimoto's thyroiditis. The subjects received an intravenous calcium stimulus and blood was collected for the determination of ionized calcium (Ca2+), calcitonin, and intact parathyroid hormone. Bone mineral density (BMD) was determined by dual-energy X-ray absorptiometry. After calcium administration the levels of Ca2+ in the two groups of hypothyroidism were significantly higher than in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteoporosis; Hypothyroidism; Calcitonin; Bone mineral density.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000100009

Bone mineral density of Brazilian girls with juvenile dermatomyositis
Provedor de dados: 56
Autores: Castro,T.C.M. de; Terreri,M.T.R.A.; Szejnfeld,V.L.; Len,C.; Fonseca,A.S.M. da; Hilário,M.O.E.
We measured bone mineral density (BMD) in girls with juvenile dermatomyositis (JDM) considering multiple factors in order to determine if it could be used as a predictor of reduction in bone mass. A cross-sectional study of lumbar spine BMD (L2-L4) was conducted on 10 girls aged 7-16 years with JDM. A group of 20 age-matched healthy girls was used as control. Lumbar spine BMD was measured by dual-energy X-ray absorptiometry. Weight, height and pubertal Tanner stage were determined in all patients and controls. Duration of disease and mean daily and cumulative steroid doses were calculated for all patients on the basis of their medical charts. JDM activity was determined on the basis of the presence of muscle weakness, cutaneous vasculitis and/or elevation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dermatomyositis; Adolescent girls; Bone mineral density; Osteoporosis; Corticosteroids.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000200020

Response to an oral calcium load in nephrolithiasis patients with fluctuating parathyroid hormone and ionized calcium levels
Provedor de dados: 56
Autores: Gomes,S.A.; Lage,A.; Lazaretti-Castro,M.; Vieira,J.G.H.; Heilberg,I.P.
the response to an oral calcium load test was assessed in 17 hypercalciuric nephrolithiasis patients who presented elevated parathyroid hormone (PTH) irrespective of the ionized calcium (sCa2+) levels. Blood samples were collected at baseline (0 min) and at 60 and 180 min after 1 g calcium load for serum PTH, total calcium, sCa2+, and 1.25(OH)2D3 determinations. According to the sCa2+ level at baseline, patients were classified as normocalcemic (N = 9) or hypercalcemic (N = 8). Six healthy subjects were also evaluated as controls. Bone mineral density was reduced in 14/17 patients. In the normocalcemic group, mean PTH levels at 0, 60 and 180 min (95 ± 76, 56 ± 40, 57 ± 45 pg/ml, respectively) did not differ from the hypercalcemic group (130 ± 75, 68 ± 35,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parathyroid hormone; Calcium; Hyperparathyroidism; Hypercalciuria; Nephrolithiasis; Bone mineral density.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000900013

Bone mineral density in young women of the city of São Paulo, Brazil: correlation with both collagen type I alpha 1 gene polymorphism and clinical aspects
Provedor de dados: 56
Autores: Barros,E.R.; Kasamatsu,T.S.; Ramalho,A.C.; Hauache,O.M.; Vieira,J.G.H.; Lazaretti-Castro,M.
Osteoporosis is a multifactorial disease with great impact on morbidity and mortality mainly in postmenopausal women. Although it is recognized that factors related to life-style and habits may influence bone mass formation leading to greater or lower bone mass, more than 85% of the variation in bone mineral density (BMD) is genetically determined. The collagen type I alpha 1 (COLIA1) gene is a possible risk factor for osteoporosis. We studied a population of 220 young women from the city of São Paulo, Brazil, with respect to BMD and its correlation with both COLIA1 genotype and clinical aspects. The distribution of COLIA1 genotype SS, Ss and ss in the population studied was 73.6, 24.1 and 2.3%, respectively. No association between these genotypes and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: COLIA1; Bone mineral density; Risk factors; Polymorphism; Osteoporosis.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000800005

High-impact exercise in rats prior to and during suspension can prevent bone loss
Provedor de dados: 56
Autores: Yanagihara,G.R.; Paiva,A.G.; Gasparini,G.A.; Macedo,A.P.; Frighetto,P.D.; Volpon,J.B.; Shimano,A.C.
High-impact exercise has been considered an important method for treating bone loss in osteopenic experimental models. In this study, we investigated the effects of osteopenia caused by inactivity in femora and tibiae of rats subjected to jump training using the rat tail suspension model. Eight-week-old female Wistar rats were divided into five groups (n=10 each group): jump training for 2 weeks before suspension and training during 3 weeks of suspension; jump training for 2 weeks before suspension; jump training only during suspension; suspension without any training; and a control group. The exercise protocol consisted of 20 jumps/day, 5 days/week, with a jump height of 40 cm. The bone mineral density of the femora and tibiae was measured by double...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone; Mechanical properties; Bone mineral density; Scanning electron microscopy; Jump; Rats.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000300605

Vitamin D receptor alleles and bone mineral density in a normal premenopausal Brazilian female population
Provedor de dados: 56
Autores: Lazaretti-Castro,M.; Duarte-de-Oliveira,M.A.; Russo,E.M.K.; Vieira,J.G.H.
Studies on the association between vitamin D receptor (VDR) polymorphism and bone mineral density (BMD) in different populations have produced conflicting results probably due to ethnic differences in the populations studied. The Brazilian population is characterized by a very broad genetic background and a high degree of miscegenation. Of an initial group of 164, we studied 127 women from the city of São Paulo, aged 20 to 47 years (median, 31 years), with normal menses, a normal diet and no history of diseases or use of any medication that could alter BMD. VDR genotype was assessed by PCR amplification followed by BsmI digestion of DNA isolated from peripheral leukocytes. BMD was measured using dual energy X-ray absorptiometry (Lunar DPX) at the lumbar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitamin D receptor genotype; Bone mineral density; Brazilian population.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000800003

Women with primary ovarian insufficiency have lower bone mineral density
Provedor de dados: 56
Autores: Amarante,F.; Vilodre,L.C.; Maturana,M.A.; Spritzer,P.M.
The aim of the present study was to assess the prevalence of osteoporosis in a sample of 32 patients with spontaneous primary ovarian insufficiency (POI) in comparison to reference groups of 25 pre- and 55 postmenopausal women. Hip (lumbar) and spinal bone mineral density (BMD) measurements were performed by dual-energy X-ray absorptiometry in the three groups. The median age of POI patients at the time of diagnosis was 35 years (interquartile range: 27-37 years). The mean ± SD age of postmenopausal reference women (52.16 ± 3.65 years) was higher than that of POI (46.28 ± 10.38 years) and premenopausal women (43.96 ± 7.08; P = 0.001) at the time of BMD measurement. Twenty-seven (84.4%) POI women were receiving hormone replacement therapy (HRT) at the time...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Premature ovarian failure; Premature menopause; Osteoporosis; Bone mineral density; Hypogonadism.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000100012

Bone mineral density in Brazilian men 50 years and older
Provedor de dados: 56
Autores: Zerbini,C.A.F.; Latorre,M.R.O.; Jaime,P.C.; Tanaka,T.; Pippa,M.G.B.
Bone mineral density (BMD) in the lumbar spine (LSBMD), femoral neck (FNBMD) and whole body (WBBMD) and whole body tissue composition were evaluated in 288 Brazilian men 50 years and older, 80% white and 20% Mulattoes. Age was inversely correlated with WBBMD (r = -0.20) and FNBMD (r = -0.21) but not with LSBMD (r = 0.03). Body mass index and weight showed a strong positive correlation with WBBMD (r = 0.48 and 0.54), LSBMD (r = 0.37 and 0.45) and FNBMD (r = 0.42 and 0.48). Correlation with height was positive but weaker. No significant bone loss at the lumbar spine level was observed as the population aged. FNBMD and WBBMD decreased significantly only in the last decade (age 70-79) studied. BMD was higher for Brazilian men as compared to Brazilian women at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Osteoporosis; Epidemiology.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001200005

Electrical field stimulation improves bone mineral density in ovariectomized rats
Provedor de dados: 56
Autores: Lirani-Galvão,A.P.R.; Bergamaschi,C.T.; Silva,O.L.; Lazaretti-Castro,M.
Osteoporosis and its consequent fractures are a great social and medical problem mainly occurring in post-menopausal women. Effective forms of prevention and treatment of osteoporosis associated with lower costs and the least side effects are needed. Electrical fields are able to stimulate osteogenesis in fractures, but little is known about their action on osteoporotic tissue. The aim of the present study was to determine by bone densitometry the effects of electrical stimulation on ovariectomized female Wistar rats. Thirty rats (220 ± 10 g) were divided into three groups: sham surgery (SHAM), bilateral ovariectomy (OVX) and bilateral ovariectomy + electrical stimulation (OVX + ES). The OVX + ES group was submitted to a 20-min session of a low-intensity...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Rats; Osteoporosis; Ovariectomy; Electrical stimulation; Bone mineral density; Osteogenesis.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006001100014

Relationship between glycemic control and OPG gene polymorphisms with lower bone mineral density in patients with type 1 Diabetes mellitus
Provedor de dados: 60
Autores: Loureiro,Melina Bezerra; Ururahy,Marcela Abbott Galvão; Souza,Karla Simone Costa de; Oliveira,Yonara Monique da Costa; Silva,Heglayne Pereira Vital da; Bortolin,Raul Hernandes; Bezerra,João Felipe; Hirata,Rosario Dominguez Crespo; Maciel-Neto,José Jorge; Arrais,Ricardo Fernando; Almeida,Maria das Graças; Hirata,Mario Hiroyuki; Rezende,Adriana Augusto de.
ABSTRACT The aim of the present study was to investigate the bone mineral density (BMD) of patients with type 1 Diabetes mellitus (T1DM). We also assessed the association between osteoprotegerin (OPG) genetic polymorphisms and BMD. Genotyping was performed for 1181G&gt;C and 163A&gt;G OPG polymorphisms by allelic discrimination in 119 patients with T1DM and 161 normoglycemic (NG) individuals, aged 6 to 20 years old. Glycemic control, serum parameters of bone metabolism and BMD were evaluated. T1DM patients showed low BMD, poor glycemic control and decreased total calcium values when compared to controls (p &lt; 0.05). For all the polymorphisms studied, the genotype and allele frequencies in patients with T1DM were not significantly different from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Type 1 Diabetes mellitus/bone biomarkers; Bone mineral density; OPG polymorphism/children and adolescents.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400616