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Osteoporosis calcium

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https://www.readbyqxmd.com/read/28543687/effect-of-a-single-intravenous-zoledronic-acid-administration-on-biomarkers-of-acute-kidney-injury-aki-in-patients-with-osteoporosis-a-pilot-study
#1
C Cipriani, J Pepe, C Clementelli, R Manai, L Colangelo, V Fassino, L Nieddu, S Minisola
AIMS: The pilot study was designed to evaluate the early effect of intravenous (iv) zoledronic acid (ZA) on renal function. METHODS: Five mg iv ZA was administered to 23 patients with osteoporosis (17 women and 6 men, mean age 73±7 SD years). Urinary NGAL, KIM-1, and MCP-1, plasma (p) MCP-1 and serum (s) IL-18, serum calcium (sCa), Creatinine clearance (CrCl), parathyroid hormone (PTH), plasma C-terminal FGF23 (pFGF23), serum (s) Klotho, calcium excretion (CaEx) and renal threshold phosphate concentration/GFR (TmPO4/GFR) were assessed at baseline, 24 hours (h) and day (d) 30 after administration...
May 25, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28537325/association-of-protein-intake-with-bone-mineral-density-and-bone-mineral-content-among-elderly-women-the-ostpre-fracture-prevention-study
#2
M Isanejad, J Sirola, J Mursu, H Kröger, M Tuppurainen, A T Erkkilä
It has been hypothesized that high protein intakes are associated with lower bone mineral content (BMC). Previous studies yield conflicting results and thus far no studies have undertaken the interaction of body mass index (BMI) and physical activity with protein intakes in relation to BMC and bone mineral density (BMD). OBJECTIVE: To evaluate the associations of dietary total protein (TP), animal protein (AP) and plant protein (PP) intakes with BMC and BMD and their changes. We tested also the interactions of protein intake with, obesity (BMI ≤30 vs...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28535619/prevalence-and-incidence-of-osteoporotic-fractures-in-patients-on-long-term-glucocorticoid-treatment-for-rheumatic-diseases-the-glucocorticoid-induced-osteoporosis-tool-giotto-study
#3
M Rossini, O Viapiana, M Vitiello, N Malavolta, G La Montagna, S Maddali Bongi, O Di Munno, R Nuti, C U Manzini, C Ferri, L Bogliolo, A Mathieu, F Cantatore, A Del Puente, M Muratore, W Grassi, B Frediani, G Saviola, P Delvino, L Mirone, G Ferraccioli, G Tripi, I Piazza, D Gatti
Osteoporosis and fractures are common and invalidating consequences of chronic glucorticoid (GC) treatment. Reliable information regarding the epidemiology of GC induced osteoporosis (GIOP) comes exclusively from the placebo group of randomized clinical trials while observational studies are generally lacking data on the real prevalence of vertebral fractures, GC dosage and primary diagnosis. The objective of this study was to evaluate the prevalence and incidence of osteoporotic fractures and to identify their major determinants (primary disease, GC dosage, bone mineral density, risk factors, specific treatment for GIOP) in a large cohort of consecutive patients aged >21 years, on chronic treatment with GC (≥5 mg prednisone - PN - equivalent) and attending rheumatology centers located all over Italy...
May 22, 2017: Reumatismo
https://www.readbyqxmd.com/read/28527105/association-between-lumbar-bone-mineral-density-and-serum-uric-acid-in-postmenopausal-women-a-cross-sectional-study-of-healthy-chinese-population
#4
Wen Han, Xiaojuan Bai, Nan Wang, Lulu Han, Xuefeng Sun, Xiangmei Chen
Partial correlation and regression analyses were used in this study. We showed that there is a linear relationship between bone mineral density and serum uric acid within the normal physiologic range, and higher serum uric acid levels had a protective effect on bone loss in postmenopausal osteoporosis. PURPOSE: The significance of the relationship between lumbar bone mineral density (()BMD) and serum uric acid (SUA) levels is unclear. The aims of this study were to investigate on a population-level the association between lumbar BMD and SUA within the normal physiologic range and to determine whether SUA plays a protective role in bone loss in healthy postmenopausal Chinese women...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28524056/dermatitis-herpetiformis-and-bone-mineral-density-analysis-of-a-french-cohort-of-53-patients
#5
Coralie Lheure, Saskia Ingen-Housz-Oro, Sandra Guignard, Rachida Inaoui, Brigitte Jolivet, Xavier Chevalier, Pierre Wolkenstein, Bruno Fautrel, Oliver Chosidow
The characteristics of patients with dermatitis herpetiformis (DH) in France is poorly documented. Furthermore, the risk of fractures and bone mineral density (BMD) in DH remain under-described, and recommendations for systematic screening for osteoporosis in DH are lacking. To describe the characteristics of DH in a large French cohort and evaluate the association between BMD and features of osteoporosis. Patients were recruited from the French Association of Gluten Intolerants (AFDIAG) and a single university dermatology department...
May 19, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28523260/combination-therapy-of-raloxifene-and-alendronate-for-treatment-of-osteoporosis-in-elderly-women
#6
Mi Jung Um, Eun A Cho, Hyuk Jung
OBJECTIVES: To evaluate and compare the efficacy and safety of the combination of raloxifene and alendronate with those of monotherapies in elderly women with osteoporosis. METHODS: Sixty-two postmenopausal women (mean age 63.5 ± 0.5 years) attending gynecologic osteoporosis clinics with established osteoporosis were randomly allocated to one of four treatment groups and monitored for 3 years. All patients enrolled in this study, including those in the control group (n = 14), received 1...
April 2017: Journal of Menopausal Medicine
https://www.readbyqxmd.com/read/28516281/tof-sims-study-of-differentiation-of-human-bone-derived-stromal-cells-new-insights-into-osteoporosis
#7
Kaija Schaepe, Janina Werner, Kristina Glenske, Tessa Bartges, Anja Henss, Marcus Rohnke, Sabine Wenisch, Jürgen Janek
Lipids have numerous important functions in the human body, as they form the cells' plasma membranes and play a key role in many disease states, presumably also in osteoporosis. Here, the fatty acid composition of the outer plasma membranes of cells differentiated into the osteogenic and adipogenic direction is studied with surface-sensitive time-of-flight secondary ion mass spectrometry (ToF-SIMS). For data evaluation, principal component analysis (PCA) is applied. Human (bone-derived) mesenchymal stromal cells (hMSCs) from an osteoporotic donor and a control donor are compared to reveal differences in the fatty acid composition of the membranes...
May 18, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28511512/evaluation-of-correlation-between-salivary-calcium-alkaline-phosphatase-and-osteoporosis-a-prospective-comparative-and-observational-study
#8
Mainak Kanti Saha, Prerna Agrawal, Suparna Ganguly Saha, Vinod Vishwanathan, Vandana Pathak, Sakuru Venkata Saiprasad, Purvi Dhariwal, Mahendra Dave
INTRODUCTION: Fixed and/or removable prosthodontics caters to the restorative needs of the largest count of geriatric patients whose rehabilitative procedures depend on the quality and quantity of available bone. The common diagnostic parameters for quantifying bone may involve an invasive blood examination, an expensive bone densitometry procedure or a urine analysis. Sialometry involving the basic biochemistry of saliva analysis may be proposed as an alternative to the conventional investigative protocol and its usefulness may be attributed owing to its non invasive and simpler procedure...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28501354/calcium-orthophosphates-capo4-occurrence-and-properties
#9
REVIEW
S V Dorozhkin
The present overview is intended to point the readers' attention to the important subject of calcium orthophosphates (CaPO4). This type of materials is of the special significance for the human beings because they represent the inorganic part of major normal (bones, teeth and antlers) and pathological (those appearing due to various diseases) calcified tissues of mammals. For example, atherosclerosis results in blood vessel blockage caused by a solid composite of cholesterol with CaPO4, while dental caries (tooth decay) and osteoporosis (a low bone mass with microarchitectural changes) mean a partial decalcification of teeth and bones, respectively, that results in replacement of a less soluble and harder biological apatite by more soluble and softer calcium hydrogenorthophosphates...
May 10, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28496308/atorvastatin-a-double-weapon-in-osteoporosis-treatment-an-experimental-and-clinical-study
#10
Naglaa El-Nabarawi, Mohamed El-Wakd, Mostafa Salem
OBJECTIVE: The aim of this study was to evaluate the effect of atorvastatin on the bone formation and resorption markers in ovariectomized rats (experimental study), and to study its effect on the bone mineral density (BMD) in postmenopausal osteoporotic women (clinical study). MATERIALS AND METHODS: The study involved experimental and clinical aspects. In the experimental aspect, 42 female Wistar rats were divided into five groups: Group I (n=6; sham-operated), Group II (n=6; 1 mL of carboxymethyl cellulose [CMC] was administered orally), Group III (n=6; 20 mg/kg orally of atorvastatin was administered), Group IV (n=12; untreated ovariectomized [OVX] rats and served as a model of osteoporosis [OP]) and Group V (n=12; 20 mg/kg orally of atorvastatin was administered to ovariectomized rats)...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28495495/translating-in-vitro-ligand-bias-into-in-vivo-efficacy
#11
REVIEW
Louis M Luttrell, Stuart Maudsley, Diane Gesty-Palmer
It is increasingly apparent that ligand structure influences both the efficiency with which G protein-coupled receptors (GPCRs) engage their downstream effectors and the manner in which they are activated. Thus, 'biased' agonists, synthetic ligands whose intrinsic efficacy differs from the native ligand, afford a strategy for manipulating GPCR signaling in ways that promote beneficial signals while blocking potentially deleterious ones. Still, there are significant challenges in relating in vitro ligand efficacy, which is typically measured in heterologous expression systems, to the biological response in vivo, where the ligand is acting on natively expressed receptors and in the presence of the endogenous ligand...
May 7, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28492856/treatment-of-low-bone-density-or-osteoporosis-to-prevent-fractures-in-men-and-women-a-clinical-practice-guideline-update-from-the-american-college-of-physicians
#12
Amir Qaseem, Mary Ann Forciea, Robert M McLean, Thomas D Denberg
Description: This guideline updates the 2008 American College of Physicians (ACP) recommendations on treatment of low bone density and osteoporosis to prevent fractures in men and women. This guideline is endorsed by the American Academy of Family Physicians. Methods: The ACP Clinical Guidelines Committee based these recommendations on a systematic review of randomized controlled trials; systematic reviews; large observational studies (for adverse events); and case reports (for rare events) that were published between 2 January 2005 and 3 June 2011...
May 9, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28490509/vitamin-d-and-calcium-intake-and-risk-of-early-menopause
#13
Alexandra C Purdue-Smithe, Brian W Whitcomb, Kathleen L Szegda, Maegan E Boutot, JoAnn E Manson, Susan E Hankinson, Bernard A Rosner, Lisa M Troy, Karin B Michels, Elizabeth R Bertone-Johnson
Background: Early menopause, defined as the cessation of ovarian function before the age of 45 y, affects ∼10% of women and is associated with higher risk of cardiovascular disease, osteoporosis, and other conditions. Few modifiable risk factors for early menopause have been identified, but emerging data suggest that high vitamin D intake may reduce risk.Objective: We evaluated how intakes of vitamin D and calcium are associated with the incidence of early menopause in the prospective Nurses' Health Study II (NHS2)...
May 10, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28488158/negative-impact-of-high-cumulative-glucocorticoid-dose-on-bone-metabolism-of-patients-with-myasthenia-gravis
#14
Nayara Felicidade Tomaz Braz, Natalia Pessoa Rocha, Érica Leandro Marciano Vieira, Rodrigo Santiago Gomez, Izabela Guimarães Barbosa, Olívio Brito Malheiro, Adriana Maria Kakehasi, Antonio Lucio Teixeira
This current study aimed to evaluate the frequency of low bone mass, osteopenia, and osteoporosis in patients with myasthenia gravis (MG) and to investigate the possible association between bone mineral density (BMD) and plasma levels of bone metabolism markers. Eighty patients with MG and 62 controls BMD were measured in the right femoral neck and lumbar spine by dual-energy X-ray absorptiometry. Plasma concentrations of osteocalcin, osteopontin, osteoprotegerin, tumor necrosis factor (TNF-α), interleukin (IL)-1β, IL-6, dickkopf (DKK-1), sclerostin, insulin, leptin, adrenocorticotropic hormone, parathyroid hormone, and fibroblast growth factor (FGF-23) were analyzed by Luminex®...
May 9, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28478781/comparing-measured-calcium-and-vitamin-d-intakes-with-perceptions-of-intake-in-canadian-young-adults-insights-for-designing-osteoporosis-prevention-education
#15
Alyson Holland, Tina Moffat
OBJECTIVE: To identify the relationship between perceptions of Ca and vitamin D consumption and actual intakes to inform the design of osteoporosis prevention education. DESIGN: An FFQ was used to approximate usual monthly Ca and vitamin D intakes among a group of young Canadians. Qualitative interviews and a food card pile sort activity explored individuals' perceptions of nutrient intakes. The FFQ was used to assess nutrient adequacy for individual participants and the qualitative interviews and pile sort were analysed using thematic content analysis...
May 8, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/28474258/calcium-balance-in-chronic-kidney-disease
#16
REVIEW
Kathleen M Hill Gallant, David M Spiegel
PURPOSE OF REVIEW: The kidneys play a critical role in the balance between the internal milieu and external environment. Kidney failure is known to disrupt a number of homeostatic mechanisms that control serum calcium and normal bone metabolism. However, our understanding of calcium balance throughout the stages of chronic kidney disease is limited and the concept of balance itself, especially with a cation as complex as calcium, is often misunderstood. Both negative and positive calcium balance have important implications in patients with chronic kidney disease, where negative balance may increase risk of osteoporosis and fracture and positive balance may increase risk of vascular calcification and cardiovascular events...
May 4, 2017: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/28473228/corticosteroid-treatment-exacerbates-bone-osteopenia-in-mice-with-gonadal-hormone-deficiency-induced-osteoporosis
#17
Riadh Badraoui, Nahed Amri, Nourhène Zammel, Rim Chaabane, Tarek Rebai
Gonadic deficiency and corticotherapy are important risk factors in the pathogenesis of osteoporosis. This study was outlined to assess the effects of combined orchidectomy (ORX) and corticosteroid (cortisol; CS) administration on bone remodeling and metabolism. Twenty-week-old male Swiss mice were randomized into four groups: either sham operated (sham), ORX, CS injected (CS), or ORX and CS injected (ORX+CS). After 28days, mice were euthanized. Both ORX and CS resulted in reduced trabecular volume, and mineral apposition rate and increased osteoclast number and activity...
May 1, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28469115/the-cell-biology-and-role-of-resorptive-cells-in-diseases-a-review
#18
REVIEW
Prashant Babaji, Raghu Devanna, Kiran Jagtap, Vishwajit Rampratap Chaurasia, Jeethu John Jerry, Basanta Kumar Choudhury, Dinesh Duhan
Resorptive cells are responsible for the resorption of mineralized matrix of hard tissues. Bone-resorbing cells are called osteoclasts; however, they can resorb mineralized dental tissues or calcified cartilage and then they are called odontoclasts and chondroclasts, respectively. Resorptive cells form when mononuclear precursors derived from a monocyte-macrophage cell lineage are attracted to certain mineralized surfaces and subsequently fuse and adhere onto them for exerting their resorbing activity. These cells are responsible for degradation of calcified extracellular matrix composed of organic molecules and hydroxyapatite...
April 2017: Annals of African Medicine
https://www.readbyqxmd.com/read/28467451/biochemical-markers-of-bone-turnover-in-benign-paroxysmal-positional-vertigo
#19
Sun Bin Lee, Chang Ho Lee, Young Ju Kim, Hyoung-Mi Kim
OBJECTIVE: Several studies have suggested a possible relationship between recurrent benign paroxysmal positional vertigo (BPPV) and altered calcium homeostasis in the endolymph of the inner ear. The present study aimed to evaluate the association between Ca2+ and vitamin D status and BPPV occurrence as well as the status of bone biochemical markers in osteoporotic patients who were diagnosed with idiopathic BPPV. METHODS: The study included total 132 patients who were referred to our clinic between August 2008 and October 2013...
2017: PloS One
https://www.readbyqxmd.com/read/28466573/calcium-supplementation-and-cardiovascular-risk-a-rising-concern
#20
REVIEW
Aurel T Tankeu, Valirie Ndip Agbor, Jean Jacques Noubiap
Over the past decade, the number of individuals taking calcium supplementation worldwide has been on the rise, especially with the emergence of new pharmaceutical companies specialized in the marketing of dietary supplements; with calcium supplementation being their main business axis. This is mostly because of the established role of calcium in the prevention and treatment of osteoporosis and, to a lesser extent, its role in the prevention of fractures. Recently, a rising body of evidence on the adverse effect of calcium supplementation on nonskeletal, especially cardiovascular, health has been a cause for concern...
May 2, 2017: Journal of Clinical Hypertension
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