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https://www.readbyqxmd.com/read/29335796/association-between-frailty-and-bone-loss-in-patients-undergoing-maintenance-hemodialysis
#1
Kei Yoneki, Jun Kitagawa, Keika Hoshi, Manae Harada, Takaaki Watanabe, Takahiro Shimoda, Ryota Matsuzawa, Atsushi Yoshida, Yusuke Matsunaga, Yasuo Takeuchi, Kentaro Kamiya, Atsuhiko Matsunaga
Frailty is significantly associated with bone loss in the general population. However, it is unclear whether this association also exists in patients undergoing hemodialysis who have chronic kidney disease-mineral and bone disorder (CKD-MBD). This study aimed to assess the association between frailty and bone loss in patients undergoing hemodialysis. This cross-sectional study included 214 (90 women, 124 men) Japanese outpatients undergoing maintenance hemodialysis three times per week, with a mean age of 67...
January 15, 2018: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29331397/persistent-hyperparathyroidism-as-a-risk-factor-for-long-term-graft-failure-the-need-to-discuss-indication-for-parathyroidectomy
#2
Maria Júlia Correia Lima Nepomuceno Araujo, Janaina Almeida Mota Ramalho, Rosilene Motta Elias, Vanda Jorgetti, William Nahas, Melani Custodio, Rosa M A Moysés, Elias David-Neto
BACKGROUND: Although a successful kidney transplant (KTx) improves most of the mineral and bone disorders (MBD) produced by chronic kidney disease (CKD), hyperparathyroidism may persist (pHPT). Current guidelines recommend parathyroidectomy if serum parathormone is persistently elevated 1 year after KTx, because pHPT has been recently associated with poor graft outcomes. However, whether patients with pHPT and adequate renal function are at risk for long-term graft failure is unknown...
January 10, 2018: Surgery
https://www.readbyqxmd.com/read/29321566/n-domain-of-angiotensin-converting-enzyme-hydrolyzes-human-and-rat-amyloid-%C3%AE-1-16-peptides-as-arginine-specific-endopeptidase-potentially-enhancing-risk-of-alzheimer-s-disease
#3
Elena V Kugaevskaya, Alexander V Veselovsky, Maria I Indeykina, Nina I Solovyeva, Maria S Zharkova, Igor A Popov, Eugene N Nikolaev, Alexey B Mantsyzov, Alexander A Makarov, Sergey A Kozin
Alzheimer's disease (AD) is a multifactorial neurodegenerative disorder. Amyloid-β (Aβ) aggregation is likely to be the major cause of AD. In contrast to humans and other mammals, that share the same Aβ sequence, rats and mice are invulnerable to AD-like neurodegenerative pathologies, and Aβ of these rodents (ratAβ) has three amino acid substitutions in the metal-binding domain 1-16 (MBD). Angiotensin-converting enzyme (ACE) cleaves Aβ-derived peptide substrates, however, there are contradictions concerning the localization of the cleavage sites within Aβ and the roles of each of the two ACE catalytically active domains in the hydrolysis...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29316590/hemiarthroplasty-for-fractures-of-metastatic-bone-disease-have-different-outcomes-compared-to-fractures-without-metastasis-a-matched-pair-analysis
#4
Samuel Rosas, Alejandro Marquez-Lara, Alexander H Jinnah, Martin W Roche, Jeffrey S Willey, Chukwuweike Gwam, Cynthia L Emory
INTRODUCTION: Hemiarthropalsty (HA) for proximal femur fractures (PFF) has shown good results in the elderly patient population. It has also been used to treat fractures of the proximal femur in patients with metastatic bone disease (MBD). Nonetheless, complications still occur in both patient populations and their effect on 90-day costs can be a great burden to the healthcare system. Thus, the purpose of this study was to evaluate and compare the outcomes and costs of HA for PFF in patients with bone metastasis versus those without it...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29298075/structure-and-stability-of-molecular-crystals-with-many-body-dispersion-inclusive-density-functional-tight-binding
#5
Majid Mortazavi, Jan Gerit Brandenburg, Reinhard J Maurer, Alexandre Tkatchenko
Accurate prediction of structure and stability of molecular crystals is crucial in materials science and requires reliable modeling of long-range dispersion interactions. Semi-empirical electronic structure methods are computationally more efficient than their ab initio counterparts, allowing structure sampling with significant speedups. Here, we combine the Tkatchenko-Scheffler van-der-Waals method (TS) and the many body dispersion method (MBD) with third-order density functional tight-binding (DFTB3) <em>via<em> a charge population-based method...
January 3, 2018: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29258587/association-between-mammographic-breast-density-and-histologic-features-of-benign-breast-disease
#6
Karthik Ghosh, Robert A Vierkant, Ryan D Frank, Stacey Winham, Daniel W Visscher, Vernon S Pankratz, Christopher G Scott, Kathleen Brandt, Mark E Sherman, Derek C Radisky, Marlene H Frost, Lynn C Hartmann, Amy C Degnim, Celine M Vachon
BACKGROUND: Over 40% of women undergoing breast screening have mammographically dense breasts. Elevated mammographic breast density (MBD) is an established breast cancer risk factor and is known to mask tumors within the dense tissue. However, the association of MBD with high risk benign breast disease (BBD) is unknown. METHOD: We analyzed data for 3400 women diagnosed with pathologically confirmed BBD in the Mayo Clinic BBD cohort from 1985-2001, with a clinical MBD measure (either parenchymal pattern (PP) or Breast Imaging Reporting and Data Systems (BI-RADS) density) and expert pathology review...
December 19, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/29247702/developmental-dynamics-of-the-epigenome-a-longitudinal-study-of-three-toddlers
#7
Oxana Yu Naumova, Mary Dozier, Pavel V Dobrynin, Kirill Grigorev, Allison Wallin, Ida Jeltova, Maria Lee, Adam Raefski, Elena L Grigorenko
Epigenetic regulation plays an important role in development, at the embryonic stages and later during the lifespan. Some epigenetic marks are highly conserved throughout the lifespan whereas others are closely associated with specific age periods and/or particular environmental factors. Little is known about the dynamics of epigenetic regulation during childhood, especially during the period of rapid early development. Our study was aimed to determine whether the developmental program at the early stages of human development is accompanied by significant changes in the systems of genome regulation, specifically, by genome-wide changes in DNA methylation...
December 13, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29243442/-regression-analysis-of-serum-bone-metabolic-markers-and-traditional-chinese-medicine-syndromes-in-patients-with-ckd-mbd
#8
Hai-Ming Yang, Xian-Jie Meng, Wei Wu, Ying-Lu Liu, Xiao-Juan Zhai
To analyze the interdependent relationship between serum bone metabolic markers and traditional Chinese medicine (TCM) syndromes in patients with chronic kidney disease (stages 3 and 4)-related mineral and bone disorder (CKD-MBD), in order to provide the objective basis for exploring the rules of TCM syndrome differentiation in patients with CKD-MBD. The retrospective survey was conducted to collect 105 cases with CKD (stages 3 and 4)-MBD. General clinical indexes, frequency of TCM syndromes and distribution of TCM syndrome type were investigated...
October 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29224147/comprehensive-whole-dna-methylome-analysis-by-integrating-medip-seq-and-mre-seq
#9
Xiaoyun Xing, Bo Zhang, Daofeng Li, Ting Wang
Understanding the role of DNA methylation often requires accurate assessment and comparison of these modifications in a genome-wide fashion. Sequencing-based DNA methylation profiling provides an unprecedented opportunity to map and compare complete DNA CpG methylomes. These include whole genome bisulfite sequencing (WGBS), Reduced-Representation Bisulfite-Sequencing (RRBS), and enrichment-based methods such as MeDIP-seq, MBD-seq, and MRE-seq. An investigator needs a method that is flexible with the quantity of input DNA, provides the appropriate balance among genomic CpG coverage, resolution, quantitative accuracy, and cost, and comes with robust bioinformatics software for analyzing the data...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29224145/methyl-cpg-binding-domain-sequencing-mbd-seq
#10
Karolina A Aberg, Robin F Chan, Linying Xie, Andrey A Shabalin, Edwin J C G van den Oord
Detailed biological knowledge about the potential importance of the methylome is typically lacking for common diseases. Therefore, methylome-wide association studies (MWAS) are critical to detect disease relevant methylation sites. Methyl-CpG-binding domain sequencing (MBD-seq) offers potential advantages compared to antibody-based enrichment, but performance depends critically on using an optimal protocol. Using an optimized protocol, MBD-seq can approximate the sensitivity/specificity obtained with whole-genome bisulfite sequencing, but at a fraction of the costs and time to complete the project...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29220483/prenatal-exposure-to-bisphenol-a-disrupts-naturally-occurring-bimodal-dna-methylation-at-proximal-promoter-of-fggy-an-obesity-relevant-gene-encoding-a-carbohydrate-kinase-in-gonadal-white-adipose-tissues-of-cd-1-mice
#11
Julia A Taylor, Keiko Shioda, Shino Mitsunaga, Shiomi Yawata, Brittany M Angle, Susan C Nagel, Frederick S Vom Saal, Toshi Shioda
Exposure of mammalian fetuses to endocrine disruptors can increase the risk of adult-onset diseases. For example, we previously showed that exposure of mouse fetuses to bisphenol A (BPA) caused adult-onset obesity. To obtain insights into roles of epigenetic changes in the delayed toxic effects of endocrine disruption, we determined effects of fetal mouse exposure to BPA on genome-wide DNA methylation and mRNA expression in gonadal white adipose tissues by deep sequencing (MBD-seq and RNA-seq), bisulfite pyrosequencing, and real-time qPCR...
December 6, 2017: Endocrinology
https://www.readbyqxmd.com/read/29208625/lowering-expectations-with-niacin-treatment-for-ckd-mbd
#12
EDITORIAL
Tilman B Drüeke, Ziad A Massy
No abstract text is available yet for this article.
December 5, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29207226/-the-treatment-of-the-patient-presenting-with-chronic-kidney-disease-ckd-and-fragility-fractures
#13
REVIEW
Andrea Giusti, Maria Fusaro
Fragility fractures occur in all stages of chronic kidney disease (CKD) due to low bone mineral density and poor bone quality (namely osteoporosis), as well as in CKD-mineral and bone disorders (CKD-MBD). As in postmenopausal women and older adults, the prompt identification of CKD subjects with a history of fragility fractures is crucial in order to implement strategies to reduce the risk of new fragility fractures and their consequences. The treatment of severe osteoporosis for patients with stages 1-3 CKD should not differ from patients without CKD, while clinical decisions and pharmacological treatments in subjects with stages 4-5/5D CKD differ greatly, being more tricky and challenging...
December 5, 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/29207223/-fragility-fracture-in-the-chronic-kidney-disease-ckd
#14
REVIEW
Maria Fusaro, Andrea Aghi, Maria Cristina Mereu, Andrea Giusti
Fragility fractures (FF) are common in patients with chronic kidney disease (CKD), and they occur at a younger age and with a higher frequency than in the general population, producing significant morbidity, mortality and healthcare costs. The pathogenic mechanisms underlying FF in CKD patients have not been completely understood. Behind CKD-MBD, the uremic toxicity should play a role in their pathogenesis, by affecting bone quality (uremic osteoporosis). There are very few prospective studies investigating risk factors for fragility fractures in CKD patients, and available algorithms for fracture risk prediction (FRAX and DeFRA) have never considered CKD...
December 5, 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/29189198/multiple-brown-tumors-a-rare-presentation-in-the-modern-era%C3%A2
#15
Natacha Rodrigues, Iolanda Godinho, Estela Leite Nogueira, Sofia Jorge, Dolores López-Presa, António Gomes da Costa, André Luiz Weigert
Chronic kidney disease (CKD) commonly evolves with disturbances in mineral and bone metabolism, currently defined as CKD-MBD. Management strategies have progressed over the years, but our knowledge regarding evaluation and treatment is still sparse. Herein, we describe a rare case of a hemodialysis patient with apparently fairly controlled hyperparathyroidism (HPTH), who developed multiple symptomatic brown tumors involving the scull, mandible, vertebrae, pelvis, and metacarpus. Parathyroidectomy allowed complete resolution of the bone lesions preventing disastrous consequences...
January 2018: Clinical Nephrology
https://www.readbyqxmd.com/read/29187373/klotho-activin-a-in-kidney-injury-plasma-klotho-is-maintained-in-unilateral-obstruction-despite-no-upregulation-of-klotho-biosynthesis-in-contralateral-kidney
#16
Anders Nordholm, Maria L Mace, Eva Gravesen, Jacob Hofman-Bang, Marya Morevati, Klaus Olgaard, Ewa Lewin
In a new paradigm of etiology related to Chronic Kidney Disease-Mineral and Bone Disorder (CKD-MBD) kidney injury may cause induction of factors in the injured kidney that are released into the circulation and thereby initiate and maintain renal fibrosis and CKD-MBD. Klotho is believed to ameliorate renal fibrosis and CKD-MBD, while ActivinA might have detrimental effects. The unilateral ureter obstruction (UUO) model is used here to examine this concept by investigating early changes related to renal fibrosis in obstructed kidney, untouched contralateral kidney and vasculature, which might be affected by secreted factors from the obstructed kidney, and compared to unilateral nephrectomized controls (UNX)...
November 29, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29180567/uhrf1-is-indispensable-for-normal-limb-growth-by-regulating-chondrocyte-differentiation-through-specific-gene-expression
#17
Michiko Yamashita, Kazuki Inoue, Noritaka Saeki, Maky Ideta-Otsuka, Yuta Yanagihara, Yuichiro Sawada, Iori Sakakibara, Jiwon Lee, Koichi Ichikawa, Yoshiaki Kamei, Tadahiro Iimura, Katsuhide Igarashi, Yasutsugu Takada, Yuuki Imai
Transcriptional regulation can be tightly orchestrated by epigenetic regulators. Among these, ubiquitin-like with PHD and RING finger domains 1 (Uhrf1) is reported to have diverse epigenetic functions, including regulation of DNA methylation. However, the physiological functions of Uhrf1 in skeletal tissues remain unclear. Here we show that limb mesenchymal cell-specific Uhrf1 conditional knockout mice (Uhrf1ΔLimb/ΔLimb ) exhibit remarkably shortened long bones that have morphological deformities due to dysregulated chondrocyte differentiation and proliferation...
November 27, 2017: Development
https://www.readbyqxmd.com/read/29175269/sclerostin-deficiency-modifies-the-development-of-ckd-mbd-in-mice
#18
Nadine Kaesler, Anja Verhulst, Annelies De Maré, Annika Deck, Geert J Behets, Ayshe Hyusein, Pieter Evenepoel, Jürgen Floege, Nikolaus Marx, Anne Babler, Ina Kramer, Michaela Kneissel, Rafael Kramann, Daniel Weis, Patrick C D'Haese, Vincent M Brandenburg
Sclerostin is a soluble antagonist of canonical Wnt signaling and a strong inhibitor of bone formation. We present experimental data on the role of sclerostin in chronic kidney disease - bone mineral disorder (CKD-MBD). METHODS: We performed 5/6 nephrectomies in 36-week-old sclerostin-deficient (SOST-/-) B6-mice and in C57BL/6J wildtype (WT) mice. Animals received a high phosphate diet for 11weeks. The bones were analyzed by high-resolution micro-computed tomography (μCT) and quantitative bone histomorphometry...
November 21, 2017: Bone
https://www.readbyqxmd.com/read/29175022/biology-and-treatment-of-myeloma-related-bone-disease
#19
Evangelos Terpos, Dimitrios Christoulas, Maria Gavriatopoulou
Myeloma bone disease (MBD) is the most common complication of multiple myeloma (MM), resulting in skeleton-related events (SREs) such as severe bone pain, pathologic fractures, vertebral collapse, hypercalcemia, and spinal cord compression that cause significant morbidity and mortality. It is due to an increased activity of osteoclasts coupled to the suppressed bone formation by osteoblasts. Novel molecules and pathways that are implicated in osteoclast activation and osteoblast inhibition have recently been described, including the receptor activator of nuclear factor-kB ligand/osteoprotegerin pathway, activin-A and the wingless-type signaling inhibitors, dickkopf-1 (DKK-1) and sclerostin...
November 23, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29169770/fatal-serotonin-syndrome-in-a-patient-with-marchiafava-bignami-disease-combined-neurological-and-psychiatric-emergency
#20
Saeed Alghamdi, Yehya Seddeq, Hussein Algahtani, Bader Shirah
Marchiafava-Bignami disease (MBD) is a rare fatal neurological disorder characterized by demyelination, primary degeneration, and necrosis of the corpus callosum. Although MBD is mostly associated with chronic alcohol consumption and malnutrition, it has been reported in non-alcoholic patients. Serotonin syndrome is a rare but potentially fatal side effect of antidepressants that results from overstimulation of both central and peripheral serotonergic receptors. In this report, we present a case with fatal serotonin syndrome happening in a non-alcoholic patient with the chronic form of MBD...
October 31, 2017: Neurologia i Neurochirurgia Polska
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