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Bone and mineral metabolism

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https://www.readbyqxmd.com/read/29340971/denosumab-or-oral-bisphosphonates-in-primary-osteoporosis-a-real-life-study
#1
E Cairoli, S Palmieri, G Goggi, L Roggero, M Arosio, I Chiodini, C Eller-Vainicher
PURPOSE: To compare the response to denosumab (DMAb) therapy with that of oral bisphosphonate (BISPH) treatment in postmenopausal women with primary osteoporosis (PO). METHODS: In this retrospective study, we compared data of 75 PO female patients treated for 24 months with DMab (DMAb Group, age 72.6 ± 8.9 years) with those of 75 PO patients treated with oral bisphosphonates (BISPH Group), matched for age, body mass index, femoral bone mineral density (BMD), prevalent fragility fractures and familiar history of hip fracture...
January 16, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29340322/paricalcitol-versus-calcifediol-for-treating-hyperparathyroidism-in-kidney-transplant-recipients
#2
Josep M Cruzado, Ricardo Lauzurica, Julio Pascual, Roberto Marcen, Francesc Moreso, Alex Gutierrez-Dalmau, Amado Andrés, Domingo Hernández, Armando Torres, Maria Isabel Beneyto, Edoardo Melilli, Anna Manonelles, Manuel Arias, Manuel Praga
Introduction: Secondary hyperparathyroidism (SHPT) and vitamin D deficiency are common at kidney transplantation and are associated with some early and late complications. This study was designed to evaluate whether paricalcitol was more effective than nutritional vitamin D for controlling SHPT in de novo kidney allograft recipients. Methods: This was a 6-month, investigator-initiated, multicenter, open-label, randomized clinical trial. Patients with pretransplantation iPTH between 250 and 600 pg/ml and calcium <10 mg/dl were randomized to paricalcitol (PAR) or calcifediol (CAL)...
January 2018: KI Reports
https://www.readbyqxmd.com/read/29338102/circulating-serum-25-hydroxyvitamin-d-levels-and-bone-mineral-density-mendelian-randomization-study
#3
Susanna C Larsson, Håkan Melhus, Karl Michaëlsson
There is considerable discussion of the importance for increased serum 25-hydroxyvitamin D (S-25OHD) concentration associated with adequacy for bone health. Accordingly, whether long-term high S-25OHD concentration in general positively affects bone mineral density (BMD) is uncertain. We used a Mendelian randomization design to determine the association between genetically increased S-25OHD concentrations and BMD. Five single-nucleotide polymorphisms (SNPs) in or near genes encoding enzymes and carrier proteins involved in vitamin D synthesis or metabolism were used as instrumental variables to genetically predict one standard deviation increase in S-25OHD concentration...
January 16, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29336053/specific-modulation-of-vertebral-marrow-adipose-tissue-by-physical-activity
#4
Daniel L Belavy, Matthew J Quittner, Nicola D Ridgers, Adnan Shiekh, Timo Rantalainen, Guy Trudel
Marrow adipose tissue (MAT) accumulation with normal aging impacts the bone, hemopoiesis, and metabolic pathways. We investigated whether exercise was associated with lower MAT, as measured by vertebral marrow fat fraction (VFF) on magnetic resonance imaging. A total of 101 healthy individuals (54 females) aged 25 to 35 years without spine or bone disease but with distinct exercise histories were studied. Long-distance runners (67 km/wk, n = 25) exhibited lower mean lumbar VFF (27.9% [8.6%] versus 33...
January 16, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29332174/a-friend-in-knee-ccn3-may-inhibit-osteoarthritis-progression
#5
Alex Peidl
Osteoarthritis (OA) is a major clinical problem among the ageing population, yet no disease-modifying treatments currently exist. This issue arises, in part, due to the complex processes occurring in the microenvironment of articular cartilage that lead to osteoarthritic changes. Gaining a better understanding of these processes is crucial in developing a viable therapy for OA. A recent report in Journal of Bone Mineral Metabolism by Janune et al. (J Bone Miner Metab 35:582-597, 2016) suggests a novel role for CCN3 in maintaining the differentiated phenotype of articular cartilage...
January 13, 2018: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29331722/effect-of-vitamin-d-supplementation-on-serum-sclerostin-levels-in-chronic-kidney-disease
#6
REVIEW
Ashok Kumar Yadav, Vivek Kumar, Debasish Banerjee, Krishan Lal Gupta, Vivekanand Jha
Vitamin D deficiency, cardiovascular disease and abnormal bone mineral metabolism are common in chronic kidney disease (CKD). Abnormal bone mineral metabolism has been linked to vascular calcification in CKD. Sclerostin has emerged as an important messenger in cross talk between bone-vascular axis. We analyzed sclerostin in subjects who participated in the randomized, double blind, placebo controlled trial investigating the effect of cholecalciferol supplementation on vascular function in non-diabetic CKD stage G3-4 and vitamin D ≤20ng/ml [CTRI/2013/05/003648]...
January 10, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29330445/a-novel-approach-for-correction-of-crosstalk-effects-in-pathway-analysis-and-its-application-in-osteoporosis-research
#7
Yu Zhou, Yunlong Gao, Chao Xu, Hui Shen, Qing Tian, Hong-Wen Deng
Osteoporosis is a prevalent bone metabolic disease and peripheral blood monocytes represent a major systemic cell type for bone metabolism. To identify the key dysfunctional pathways in osteoporosis, we performed pathway analyses on microarray data of monocytes from subjects with extremely high/low hip bone mineral density. We first performed a traditional pathway analysis for which different pathways were treated as independent. However, genes overlap among pathways will lead to "crosstalk" phenomenon, which may lead to false positive/negative results...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29329430/increases-in-igf-1-after-anti-tnf-%C3%AE-therapy-are-associated-with-bone-and-muscle-accrual-in-pediatric-crohn-s-disease
#8
Mark D DeBoer, Arthur M Lee, Kirabo Herbert, Jin Long, Meena Thayu, Lindsay M Griffin, Robert N Baldassano, Lee A Denson, Babette S Zemel, Michelle R Denburg, Rita Herskovitz, Mary B Leonard
Context: Low levels of IGF-1 in pediatric and adolescent Crohn's Disease (CD) likely contribute to bone and muscle deficits. Objective: Assess changes in IGF-1 levels and associations with bone and muscle accrual following initiation of anti-TNF-α therapy in pediatric and adolescent CD. Design and Participants: Participants (n=75, age 5-21 years) with CD were enrolled in a prospective cohort study; 63 completed the 12-month visit. Main Outcome Measures: IGF-1 levels at baseline and 10 weeks, and DXA and tibia peripheral quantitative-CT (pQCT) measures of bone and muscle at baseline and 12 months after initiation of anti-TNF-α therapy...
January 10, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29328885/radiographic-emphysema-circulating-bone-biomarkers-and-progressive-bone-mineral-density-loss-in-smokers
#9
Jessica Bon, Yingze Zhang, Joseph K Leader, Carl Fuhrman, Subashan Perera, Divay Chandra, Marnie Bertolet, Brenda Diergaarde, Susan L Greenspan, Frank C Sciurba
RATIONALE: Osteoporosis is common in individuals with chronic obstructive pulmonary disease. Lung-specific factors, including radiographic emphysema, independently associate with low bone mineral density (BMD) in cross-sectional smoking cohorts. However, factors associated with progressive bone loss in smokers are under-studied and largely unknown. OBJECTIVES: To determine the relationship between radiographic emphysema, circulating bone metabolism markers, and pulmonary function and accelerated BMD loss in smokers...
January 12, 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29325759/snps-in-the-vicinity-of-p2x7r-rank-rankl-opg-and-wnt-signalling-pathways-and-their-association-with-bone-phenotypes-in-academy-footballers
#10
Ian Varley, David C Hughes, Julie P Greeves, William D Fraser, Craig Sale
CONTEXT: Genotype plays an important role in influencing bone phenotypes, such as bone mineral density, but the role of genotype in determining responses of bone to exercise has yet to be elucidated. OBJECTIVE: To determine whether 10 SNPs associated with genes in the vicinity of P2X7R, RANK/RANKL/OPG and Wnt Signalling Pathways are associated with bone phenotypes in elite academy footballers (Soccer players) and to determine whether these genotypes are associated with training induced changes in bone...
January 8, 2018: Bone
https://www.readbyqxmd.com/read/29322073/high-fat-high-sucrose-diet-results-in-higher-bone-mass-in-aged-rats
#11
Akira Minematsu, Yasue Nishii, Susumu Sakata
Intake of high-fat/high-sucrose (HFS) diet or high fat diet influences bone metabolism in young rodents, but its effects on bone properties of aged rodents still remain unclear. This study aimed to examine the effects of HFS diet intake on trabecular bone architecture (TBA) and cortical bone geometry (CBG) in aged rats. Fifteen male Wistar rats over 1 year were randomly divided into two groups. One group was fed a standard laboratory diet (SLD) and the other group was fed a HFS diet for six months. The femur/tibia, obtained from both groups at the end of experimental period, were scanned by micro-computed tomography for TBA/CBG analyses...
June 2018: Bone Reports
https://www.readbyqxmd.com/read/29320555/chronic-kidney-disease-associated-with-decreased-bone-mineral-density-uric-acid-and-metabolic-syndrome
#12
Bo-Lin Pan, Song-Seng Loke
OBJECTIVE: The relationship between decreased bone mineral density (BMD) and chronic kidney disease (CKD) is controversial. The associations among metabolic syndrome (MetS), serum uric acid and CKD are also unclear. We aimed to investigate the relationship between decreased BMD, MetS, serum uric acid and CKD in a general population. METHODS: A total of 802 subjects who visited a medical center in Southern Taiwan and underwent a BMD measured by dual-energy X-ray absorptiometry (DEXA) during a health examination were enrolled in this retrospective cross-sectional study...
2018: PloS One
https://www.readbyqxmd.com/read/29319133/the-assessment-of-testosterone-and-radioisotopic-index-of-bone-metabolism-and-bone-mineral-density-in-men-with-testosterone-deficiency-after-one-year-of-testosterone-therapy
#13
Wieslaw Tryniszewski, Grzegorz Kamiński, Zbigniew Maziarz, Michal Nowak, Mariusz Gadzicki, Maciej Radek
BACKGROUND: Testosterone deficiency in men is characterized by typical symptoms of hypogonadism and negative influence on the preservation of bone mass. In this study, we analysed the relationship between testosterone concentration and bone metabolism. Moreover, we assessed the impact of one-year compensation of testosterone deficiency in elderly men on bone metabolism and bone mineral density. Radioisotopic methods of bone metabolism assessment provide new research opportunities. MATERIALS AND METHODS: Men with total testosterone concentration (TT) ≤ 3 ng/ml were included into this study...
January 10, 2018: Nuclear Medicine Review. Central & Eastern Europe
https://www.readbyqxmd.com/read/29316238/composite-porous-scaffold-of-polyethylene-glycol-peg-polylactic-acid-pla-support-improved-bone-matrix-deposition-in-vitro-compared-to-pla-only-scaffolds
#14
Birru Bhaskar, Robert Owen, Hossein Bahmaee, Zena Wally, Parcha Sreenivasa Rao, Gwendolen C Reilly
Controllable pore size and architecture are essential properties for tissue-engineering scaffolds to support cell ingrowth colonization. To investigate the effect of PEG addition on porosity and bone-cell behavior, porous Polylactic acid (PLA)-Polyethylene glycol (PEG) scaffolds were developed with varied weight ratios of PLA-PEG (100/0, 90/10, 75/25) using solvent casting and porogen leaching. Sugar 200-300 µm in size was used as a porogen. To assess their suitability for bone tissue engineering, MLO-A5 murine osteoblast cells were cultured and cell metabolic activity, alkaline phosphatase (ALP) activity and bone-matrix production determined (alizarin red S staining for calcium, direct red 80 staining for collagen)...
January 9, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29313169/upright-activity-and-higher-motor-function-may-preserve-bone-mineral-density-within-6%C3%A2-months-of-stroke-a-longitudinal-study
#15
Karen Borschmann, Sandra Iuliano, Ali Ghasem-Zadeh, Leonid Churilov, Marco Y C Pang, Julie Bernhardt
PURPOSE: Bone fragility contributes to increased fracture risk, but little is known about the emergence of post-stroke bone loss. We investigated skeletal changes and relationships with physical activity, stroke severity, motor control and lean mass within 6 months of stroke. METHODS: This is a prospective observational study. Participants were non-diabetic but unable to walk within 2 weeks of first stroke. Distal tibial volumetric bone mineral density (vBMD, primary outcome), bone geometry and microstructure (high-resolution peripheral quantitative computed tomography) were assessed at baseline and 6 months, as were secondary outcomes total body bone mineral content and lean mass (dual energy X-ray absorptiometry), bone metabolism (serum osteocalcin, N-terminal propeptide of type 1 procollagen (P1NP), C-terminal telopeptide of type 1 collagen (CTX)), physical activity (PAL2 accelerometer) and motor control (Chedoke McMaster) which were also measured at 1 and 3 months...
January 8, 2018: Archives of Osteoporosis
https://www.readbyqxmd.com/read/29309589/changes-of-circulating-micro-rnas-in-response-to-treatment-with-teriparatide-or-denosumab-in-postmenopausal-osteoporosis
#16
Athanasios D Anastasilakis, Polyzois Makras, Maria Pikilidou, Symeon Tournis, Konstantinos Makris, Ilias Bisbinas, Olga Tsave, John G Yovos, Maria P Yavropoulou
Context: Expression of microRNAs (miRs) related to bone metabolism in the serum maybe affected by anti-osteoporotic treatment. Objective: To investigate the effect of two anti-osteoporotic agents with opposite effects on bone metabolism on microRNA expression profile in the serum. Design: Observational, open label, non-randomized clinical trial. Setting: The outpatient clinics for Metabolic Bone Diseases of 424 General Military Hospital, Thessaloniki, Greece...
December 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29309397/assessment-of-bone-mineral-density-in-patients-with-cirrhosis-treated-with-third-generation-nucleos-t-ide-analogues-comparison-between-tenofovir-and-entecavir
#17
Marta Tonon, Salvatore Piano, Antonietta Romano, Silvano Fasolato, Marialuisa Stanco, Chiara Pilutti, Patrizia Pontisso, Sara Mareso, Carmine Gambino, Leonardo Sartori, Paolo Angeli
BACKGROUND AND AIM: Tenofovir and entecavir are nowadays the first-line treatment in hepatitis B virus (HBV)-related cirrhosis. Both drugs were shown to be effective in HBV suppression and well tolerated. The effects of tenofovir on bone mineral density (BMD), however, were shown to worsen the rate of osteoporosis, which is already a common feature in cirrhosis. In contrast, entecavir seems to have no effect on mineral metabolism. The aim of our study was to compare the effects of nucleos(t)ide analogs on bone density in HBV-related cirrhosis...
January 5, 2018: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29307776/body-fat-mass-lean-body-mass-and-associated-biomarkers-as-determinants-of-bone-mineral-density-in-children-6-8years-of-age-the-physical-activity-and-nutrition-in-children-panic-study
#18
Sonja Soininen, Virpi Sidoroff, Virpi Lindi, Anitta Mahonen, Liisa Kröger, Heikki Kröger, Jarmo Jääskeläinen, Mustafa Atalay, David E Laaksonen, Tomi Laitinen, Timo A Lakka
Lean body mass (LM) has been positively associated with bone mineral density (BMD) in children and adolescents, but the relationship between body fat mass (FM) and BMD remains controversial. Several biomarkers secreted by adipose tissue, skeletal muscle, or bone may affect bone metabolism and BMD. We investigated the associations of LM, FM, and such biomarkers with BMD in children. We studied a population sample of 472 prepubertal Finnish children (227 girls, 245 boys) aged 6-8years. We assessed BMD, LM, and FM using whole-body dual-energy x-ray absorptiometry and analysed several biomarkers from fasting blood samples...
January 4, 2018: Bone
https://www.readbyqxmd.com/read/29307281/intermittent-fasting-protects-against-the-deterioration-of-cognitive-function-energy-metabolism-and-dyslipidemia-in-alzheimer-s-disease-induced-estrogen-deficient-rats
#19
Bae Kun Shin, Suna Kang, Da Sol Kim, Sunmin Park
Intermittent fasting may be an effective intervention to protect against age-related metabolic disturbances, although it is still controversial. Here, we investigated the effect of intermittent fasting on the deterioration of the metabolism and cognitive functions in rats with estrogen deficiency and its mechanism was also explored. Ovariectomized rats were infused with β-amyloid (25-35; Alzheimer's disease) or β-amyloid (35-25, Non-Alzheimer's disease; normal cognitive function) into the hippocampus. Each group was randomly divided into two sub-groups: one with intermittent fasting and the other fed ad libitum: Alzheimer's disease-ad libitum, Alzheimer's disease-intermittent fasting, Non-Alzheimer's disease-ad libitum, and Non-Alzheimer's disease-intermittent fasting...
January 1, 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29304151/the-role-of-carboxy-terminal-cross-linking-telopeptide-of-type-i-collagen-dual-x-ray-absorptiometry-bone-strain-and-romberg-test-in-a-new-osteoporotic-fracture-risk-evaluation-a-proposal-from-an-observational-study
#20
Fabio M Ulivieri, Luca P Piodi, Enzo Grossi, Luca Rinaudo, Carmelo Messina, Anna P Tassi, Marcello Filopanti, Anna Tirelli, Francesco Sardanelli
The consolidated way of diagnosing and treating osteoporosis in order to prevent fragility fractures has recently been questioned by some papers, which complained of overdiagnosis and consequent overtreatment of this pathology with underestimating other causes of the fragility fractures, like falls. A new clinical approach is proposed for identifying the subgroup of patients prone to fragility fractures. This retrospective observational study was conducted from January to June 2015 at the Nuclear Medicine-Bone Metabolic Unit of the of the Fondazione IRCCS Ca' Granda, Milan, Italy...
2018: PloS One
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