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https://www.readbyqxmd.com/read/28432640/osteoporosis-bone-mineral-density-and-ckd-mbd-treatment-considerations
#1
REVIEW
Jordi Bover, Lucía Bailone, Víctor López-Báez, Silvia Benito, Paola Ciceri, Andrea Galassi, Mario Cozzolino
Osteoporosis and chronic kidney disease (CKD) have both independently important potential impact on bone health. A significant number of patients with CKD stages 3a-5D have been shown to have low bone mineral density (BMD), leading to a strikingly elevated risk of fractures (mainly hip fractures) and higher associated morbidity and mortality. Mechanical properties of bone beyond age and menopausal status are additionally affected by intrinsic uremic factors. Therefore, we review in this article not only general concepts of osteoporosis and related consequences, but also the diagnostic and therapeutic implications of low BMD and bone fractures in CKD, beyond increased vascular calcification...
April 21, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28431568/a-case-report-of-severe-calciphylaxis-suggested-approach-for-diagnosis-and-treatment
#2
Margret Patecki, Gabriele Lehmann, Jan Hinrich Bräsen, Jessica Schmitz, Anna Bertram, Lars Daniel Berthold, Hermann Haller, Wilfried Gwinner
BACKGROUND: Calciphylaxis is a serious complication in patients with chronic kidney disease associated mineral and bone disorder. It can occur in conditions with low and high bone turnover. So far, there are no definite diagnostic and therapeutic guidelines which may prevent the devastating outcome in many calciphylaxis patients. We report a case which clearly illustrates that knowledge of the underlying bone disorder is essential for a directed treatment. Based on this experience we discuss a systematic diagnostic and therapeutic approach in patients with calciphylaxis...
April 21, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28429555/management-of-mineral-and-bone-disorders-in-renal-transplant-recipients
#3
Matthew J Damasiewicz, Peter R Ebeling
The management of post-transplantation bone disease is a complex problem that remains under-appreciated in clinical practice. In these patients, pre-existing metabolic bone disorder is further impacted by the use of immunosuppressive medications (glucocorticoids and calcineurin-inhibitors), variable post-transplantation renal allograft function and post-transplantation diabetes mellitus. The treatment of post-transplantation bone loss should begin pre-transplantation. All patients active on transplant waiting lists should be screened for bone disease...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28429550/parathyroid-hormone-targets-in-chronic-kidney-disease-and-managing-severe-hyperparathyroidism
#4
Carmel M Hawley, Stephen G Holt
Appropriate targets for parathyroid hormone (PTH) in patients with chronic kidney disease (CKD) stages 3-5D are controversial, as are the means by which these targets might be achieved. Secondary hyperparathyroidism is linked to symptoms like bone pain and itch, in addition to less clinically overt issues like bone fragility as well as vascular and soft tissue calcification which may lead to adverse hard endpoints, particularly fracture and death. Recognized therapies for managing a rising PTH include vitamin D analogues, with or without calcimimetic (where available), in addition to management of serum mineral concentrations with diet, binders and dialysis...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28429545/do-the-benefits-of-using-calcitriol-and-other-vitamin-d-receptor-activators-in-patients-with-chronic-kidney-disease-outweigh-the-harms
#5
Nigel D Toussaint, Matthew J Damasiewicz
The primary indication for administration of calcitriol or other vitamin D receptor activators (VDRA) in chronic kidney disease (CKD) is secondary hyperparathyroidism (SHPT). Prevention and treatment of SHPT appears important, as imbalances in mineral metabolism are associated with renal osteodystrophy, and higher parathyroid hormone (PTH) levels are associated with increased rates of mortality and morbidity in CKD patients. There is, however, a lack of controlled trial data that show lowering PTH with calcitriol/VDRA equates to improved clinical outcomes...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28428669/risk-factors-for-osteoporosis-in-postmenopausal-women
#6
Radojka Bijelic, Snjezana Milicevic, Jagoda Balaban
INTRODUCTION: Scientific studies show that many factors related to lifestyles affect the reduction of bone mineral density and osteoporosis in postmenopausal women. GOAL: The goal of this study was to determine whether smoking, drinking coffee and alcohol in menopausal women contribute to the reduction of bone mass and osteoporosis, as well as the impact of physical activity on bone mass. MATERIAL AND METHODS: The study was carried out as case study and matched controls...
February 2017: Medical Archives
https://www.readbyqxmd.com/read/28425622/targeted-disruption-of-nf1-in-osteocyte-increases-fgf23-and-osteoid-with-osteomalacia-like-bone-phenotype
#7
Nobuhiro Kamiya, Ryosuke Yamaguchi, Olumide Aruwajoye, Audrey Kim, Gen Kuroyanagi, Matthew Phipps, Naga Suresh Adapala, Jian Q Feng, Harry K W Kim
Neurofibromatosis type 1 (NF1, OMIM 162200), caused by NF1 gene mutations, exhibits multi-system abnormalities including skeletal deformities in humans. Osteocytes play critical roles in controlling bone modeling and remodeling. However, the role of neurofibromin, the protein product of the NF1 gene, in osteocytes is largely unknown. This study investigated the role of neurofibromin in osteocytes by disrupting Nf1 under the Dmp1-promoter. The conditional knockout (Nf1 cKO) mice displayed serum profile of a metabolic bone disorder with an osteomalacia-like bone phenotype...
April 20, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28424626/a-rat-immobilization-model-based-on-cage-volume-reduction-a-physiological-model-for-bed-rest
#8
Enrica Marmonti, Sílvia Busquets, Míriam Toledo, Marina Ricci, Marc Beltrà, Victòria Gudiño, Francesc Oliva, José M López-Pedrosa, Manuel Manzano, Ricardo Rueda, Francisco J López-Soriano, Josep M Argilés
Bed rest has been an established treatment in the past prescribed for critically illness or convalescing patients, in order to preserve their body metabolic resource, to prevent serious complications and to support their rapid path to recovery. However, it has been reported that prolonged bed rest can have detrimental consequences that may delay or prevent the recovery from clinical illness. In order to study disuse-induced changes in muscle and bone, as observed during prolonged bed rest in humans, an innovative new model of muscle disuse for rodents is presented...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28423063/vitamin-d-status-and-its-association-with-insulin-resistance-among-type-2-diabetics-a-case-control-study-in-ghana
#9
Linda Ahenkorah Fondjo, William K B A Owiredu, Samuel Asamoah Sakyi, Edwin Ferguson Laing, Michael Acquaye Adotey-Kwofie, Enoch Odame Antoh, Eric Detoh
BACKGROUND: Vitamin D plays a major role in physiological processes that modulate mineral metabolism and immune function with probable link to several chronic and infectious conditions. Emerging data suggests a possible influence of vitamin D on glucose homeostasis. This study sought to provide preliminary information on vitamin D status among Ghanaian type 2 diabetics and assessed its association with glucose homeostasis. METHODS: In a case control study, 118 clinically diagnosed Type 2 Diabetes Mellitus (T2DM) patients attending Diabetic Clinic at the Nkawie Government Hospital were enrolled between October and December 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28422987/systematic-review-and-meta-analysis-shows-a-specific-micronutrient-profile-in-people-with-down-syndrome-lower-blood-calcium-selenium-and-zinc-higher-red-blood-cell-copper-and-zinc-and-higher-salivary-calcium-and-sodium
#10
Amene Saghazadeh, Maryam Mahmoudi, Atefeh Dehghani Ashkezari, Nooshin Oliaie Rezaie, Nima Rezaei
Different metabolic profiles as well as comorbidities are common in people with Down Syndrome (DS). Therefore it is relevant to know whether micronutrient levels in people with DS are also different. This systematic review was designed to review the literature on micronutrient levels in people with DS compared to age and sex-matched controls without DS. We identified sixty nine studies from January 1967 to April 2016 through main electronic medical databases PubMed, Scopus, and Web of knowledge. We carried out meta-analysis of the data on four essential trace elements (Cu, Fe, Se, and Zn), six minerals (Ca, Cl, K, Mg, Na, and P), and five vitamins (vitamin A, B9, B12, D, and E)...
2017: PloS One
https://www.readbyqxmd.com/read/28421299/compared-effects-of-calcium-and-sodium-polystyrene-sulfonate-on-mineral-and-bone-metabolism-and-volume-overload-in-pre-dialysis-patients-with-hyperkalemia
#11
Yosuke Nakayama, Kaoru Ueda, Sho-Ichi Yamagishi, Miki Sugiyama, Chika Yoshida, Yuka Kurokawa, Nao Nakamura, Tomofumi Moriyama, Goh Kodama, Tomohisa Minezaki, Sakuya Ito, Akiko Nagata, Kensei Taguchi, Junko Yano, Yusuke Kaida, Kazutaka Shibatomi, Kei Fukami
BACKGROUND: Hyperkalemia is prevalent in end-stage renal disease patients, being involved in life-threatening arrhythmias. Although polystyrene sulfonate (PS) is commonly used for the treatment of hyperkalemia, direct comparison of effects between calcium and sodium PS (CPS and SPS) on mineral and bone metabolism has not yet been studied. METHODS: In a randomized and crossover design, 20 pre-dialysis patients with hyperkalemia (>5 mmol/l) received either oral CPS or SPS therapy for 4 weeks...
April 18, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28421040/isolation-and-molecular-characterization-of-novel-chlorpyrifos-and-3-5-6-trichloro-2-pyridinol-degrading-bacteria-from-sugarcane-farm-soils
#12
Smriti Rayu, Uffe N Nielsen, Loïc Nazaries, Brajesh K Singh
Chlorpyrifos (CP) is one of the most widely used organophosphate pesticides in agriculture worldwide, but its extensive use has led to the contamination of various soil and water systems. Microbial bioremediation is considered to be one of the most viable options for the removal of CP from the environment; however, little is known about the soil bacterial diversity that degrade CP. Sequential soil and liquid culture enrichments enabled the isolation of bacterial CP degraders with sequence homologies to Xanthomonas sp...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28417430/the-emergence-of-kidney-stone-disease-during-childhood-impact-on-adults
#13
REVIEW
Jeremy R Bonzo, Gregory E Tasian
PURPOSE OF REVIEW: The goal of this chapter is to review the recent epidemiologic trends of kidney stone disease and discuss the impact of the increasing incidence of nephrolithiasis among children on adults with respect to extra-renal manifestations, surgical management, and secondary prevention. RECENT FINDINGS: Among pediatric patients, kidney stone disease has been increasing at a rate of approximately 5-10% annually. Kidney stone disease has been associated with increased risks of coronary heart disease, chronic kidney disease, hypertension, and decreased bone mineral density, which is concerning for patients diagnosed at a young age...
June 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28416255/differences-between-2nd-and-3rd-generation-seric-parathormone-determination-methods-on-mortality-in-haemodialysis-patients
#14
Laura Rodríguez-Osorio, Concepción de la Piedra, Mercedes Rupert, Marta Martín-Fernández, María Luisa González Casaus, Carolina Gracia-Iguacel, Jesús Egido, Ricardo Villa-Bellosta, Emilio González Parra
Parathormone plays a key role in controlling mineral metabolism. PTH is considered a uremic toxin causing cardiovascular damage and cardiovascular mortality in dialysis patients. There are two different assays to measure PTH called 2nd generation or intact PTH (iPTH) and 3rd generation or bioPTH (PTHbio). OBJECTIVE: To evaluate the differences in mortality of dialysis patients between both assays to measure PTH, as well as the possible prognostic role of the PTHbio/iPTH ratio. METHODS: 145 haemodialysis patients were included with 2-year monitoring including baseline laboratory test and annually thereafter...
April 14, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28414058/assessment-of-bone-turnover-markers-to-predict-mineral-and-bone-disorder-in-men-with-pre-dialysis-non-diabetic-chronic-kidney-disease
#15
Joseph Jessy Davina, M Priyadarssini, Medha Rajappa, Sreejith Parameswaran, Jayaprakash Sahoo, P S Mohan Raj, G Revathy, C Palanivel, Marie Gilbert Marella
BACKGROUND: Chronic kidney disease (CKD) is commonly associated with disturbances in mineral metabolism and bone disease. Bone biopsy is the gold standard in diagnosing mineral bone disorder. Hence the search for non-invasive assessment of bone health gains importance. We undertook to assess the bone health in men with stage 4 and 5 chronic kidney Disease. METHODS: We recruited 32 male subjects with Stage 4 and 5 chronic kidney disease and 32 age-matched healthy male controls...
April 14, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28407241/leptin-accelerates-the-pathogenesis-of-heterotopic-ossification-in-rat-tendon-tissues-via-mtorc1-signaling
#16
Huaji Jiang, Yuhui Chen, Guorong Chen, Xinggui Tian, Jiajun Tang, Lei Luo, Minjun Huang, Bin Yan, Xiang Ao, Wen Zhou, Liping Wang, Xiaochun Bai, Zhongmin Zhang, Liang Wang, Cory J Xian
Leptin, an adipocyte-derived cytokine associated with bone metabolism, is believed to play a critical role in the pathogenesis of heterotopic ossification (HO). The effect and underlying action mechanism of leptin were investigated on osteogenic differentiation of tendon-derived stem cells (TDSCs) in vitro and the HO formation in rat tendons. Isolated rat TDSCs were treated with various concentrations of leptin in the presence or absence of mTORC1 signaling specific inhibitor rapamycin in vitro. A rat model with Achilles tenotomy was employed to evaluate the effect of leptin on HO formation together with or without rapamycin treatment...
April 13, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28406442/liposomal-encapsulation-for-systemic-delivery-of-propranolol-via-transdermal-iontophoresis-improves-bone-microarchitecture-in-ovariectomized-rats
#17
Benjamin Teong, Shyh Ming Kuo, Wei-Hsin Tsai, Mei-Ling Ho, Chung-Hwan Chen, Han Hsiang Huang
The stimulatory effects of liposomal propranolol (PRP) on proliferation and differentiation of human osteoblastic cells suggested that the prepared liposomes-encapsulated PRP exerts anabolic effects on bone in vivo. Iontophoresis provides merits such as sustained release of drugs and circumvention of first pass metabolism. This study further investigated and evaluated the anti-osteoporotic effects of liposomal PRP in ovariectomized (OVX) rats via iontophoresis. Rats subjected to OVX were administered with pure or liposomal PRP via iontophoresis or subcutaneous injection twice a week for 12 weeks...
April 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28405928/adynamic-bone-disease-is-a-predominant-bone-pattern-in-early-stages-of-chronic-kidney-disease
#18
REVIEW
Ziad Massy, Tilman Drueke
Chronic kidney disease (CKD) is complicated by disturbances of mineral and bone metabolism which start early in the course of the disease. It has long been assumed that high turnover bone lesions induced by secondary hyperparathyroidism are the predominant type of renal osteodystrophy from the start. However, there is increasing evidence in favor of the view that in early CKD stages low bone turnover is prevailing, with adynamic bone disease being the predominant form. Since serum parathyroid hormone levels increase progressively early on, and the most probable explanation is resistance to the skeletal action of this hormone...
April 12, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28405825/use-of-bisphosphonate-might-be-important-to-improve-bone-mineral-density-in-patients-with-rheumatoid-arthritis-even-under-tight-control-the-tomorrow-study
#19
Masahiro Tada, Kentaro Inui, Yuko Sugioka, Kenji Mamoto, Tadashi Okano, Shohei Anno, Tatsuya Koike
Although patients with rheumatoid arthritis (RA) are prone to osteoporosis, tight control of disease activity might have a positive effect on bone metabolism. We aimed to determine whether bisphosphonate use is still important to improve bone mineral density (BMD) in RA patients whose disease activity was tightly controlled and the dose of glucocorticoid was reduced. This study was a sub-analysis of the 10-year prospective cohort TOtal Management Of Risk factors in Rheumatoid arthritis patients to lOWer morbidity and mortality: the TOMORROW which started from 2010...
April 12, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28405627/bacterial-community-composition-associated-with-pyrogenic-organic-matter-biochar-varies-with-pyrolysis-temperature-and-colonization-environment
#20
Zhongmin Dai, Albert Barberán, Yong Li, Philip C Brookes, Jianming Xu
Microbes that colonize pyrogenic organic matter (PyOM) (also called biochar) play an important role in PyOM mineralization and crucially affect soil biogeochemical cycling, while the microbial community composition associated with PyOM particles is poorly understood. We generated two manure-based PyOMs with different characteristics (PyOM pyrolyzed at the low temperature of 300°C [i.e., PyOM300] and at the high temperature of 700°C [i.e., PyOM700]) and added them to high-carbon (4.15%) and low-C (0.37%) soil for microbial colonization...
March 2017: MSphere
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