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https://www.readbyqxmd.com/read/28642858/pathological-fracture-of-femoral-neck-leading-to-a-diagnosis-of-wilson-s-disease-a-case-report-and-review-of-literature
#1
Nishit Bhatnagar, Purushotham Lingaiah, Jeetendra Singh Lodhi, Yugal Karkhur
Wilson's disease (WD) is a rare inherited disorder of copper metabolism. It chiefly has hepatic, neurological and ophthalmic manifestations. Although osteoporosis, rickets and early arthritis are common features of WD, they are under-recognized. Musculoskeletal manifestations very rarely lead to diagnosis of the disease. Here we present a case of a 12-year-old girl who presented with a 3-month-old pathological fracture of neck of femur. WD was diagnosed on investigating the cause of the pathological fracture, which was managed by performing a conventional McMurray's intertrochanteric osteotomy...
May 2017: Journal of Bone Metabolism
https://www.readbyqxmd.com/read/28640195/pharmacogenomic-variants-may-influence-the-urinary-excretion-of-novel-kidney-injury-biomarkers-in-patients-receiving-cisplatin
#2
Cara Chang, Yichun Hu, Susan L Hogan, Nickie Mercke, Madeleine Gomez, Cindy O'Bryant, Daniel W Bowles, Blessy George, Xia Wen, Lauren M Aleksunes, Melanie S Joy
Nephrotoxicity is a dose limiting side effect associated with the use of cisplatin in the treatment of solid tumors. The degree of nephrotoxicity is dictated by the selective accumulation of cisplatin in renal tubule cells due to: (1) uptake by organic cation transporter 2 (OCT2) and copper transporter 1 (CTR1); (2) metabolism by glutathione S-transferases (GSTs) and γ-glutamyltransferase 1 (GGT1); and (3) efflux by multidrug resistance-associated protein 2 (MRP2) and multidrug and toxin extrusion protein 1 (MATE1)...
June 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28624942/toxicity-of-56-substances-to-trees
#3
Lauge Peter Westergaard Clausen, Stefan Trapp
Toxicity data of substances to higher plants is needed for the purpose of risk assessment, site evaluation, phytoremediation, and plant protection. However, the results from the most common phytotoxicity tests, like the OECD algae and Lemna test, are not necessarily valid for higher terrestrial plants. The willow tree toxicity test uses inhibition of transpiration (aside of growth and water use efficiency) of willow cuttings grown in spiked solutions or soils as end point to quantify toxicity. This overview presents results from 60 studies including 24 new unpublished experiments for 56 different chemicals or substrates...
June 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28619500/was-cavum-septum-pellucidum-the-cause-of-intractable-seizure-in-this-17-years-old-boy-with-wilson-s-disease
#4
Asifur Rahman, Saif Ul Haque, Paawan Bahadur Bhandari, Shamsul Alam
BACKGROUND: Cavum Septum Pellucidum (CSP), which are often found incidentally in a small number of populations, rarely, become symptomatic if enlarged significantly. Wilson's disease (WD) is an uncommon, autosomal recessive, inborn defect in copper metabolism characterized by abnormal accumulation of copper in various tissues, particularly in the liver and the brain. Seizure disorder, though rare both in CSP and WD, may happen in a very small percentage of patients in either of the two...
June 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28618722/antioxidants-status-in-type-2-diabetic-patients-in-morocco
#5
Rachid Eljaoudi, Naoual Elomri, Meryem Laamarti, Yahia Cherrah, Taoufik Amezyane, Driss Ghafir, Azeddine Ibrahimi
BACKGROUND/AIM: Type 2 diabetes is a heterogeneous and multifactorial metabolic disorder with some relationship to oxidative stress (OS). Since no studies were conducted in the Moroccan population, this clinical investigation aimed at evaluating the antioxidants status in Moroccan patients with type 2 diabetes. MATERIALS AND METHODS: Blood samples of 60 type 2 diabetic patients and 40 healthy controls subjects were analyzed for determination of glycemia, hemoglobin, CRP, glycated hemoglobin, lipid parameters, malondialdehyde (MDA), vitamins E and C, copper (Cu), zinc (Zn), and selenium (Se)...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28611243/optimization-of-a-collagen-targeted-positron-emission-tomography-probe-for-molecular-imaging-of-pulmonary-fibrosis
#6
Pauline Désogère, Luis F Tapias, Tyson A Rietz, Nicholas Rotile, Francesco Blasi, Helen Day, Justin Elliot, Bryan C Fuchs, Michael Lanuti, Peter Caravan
There is a large unmet need for a simple, accurate, non-invasive, quantitative and high resolution imaging modality to detect lung fibrosis at early stage and to monitor disease progression. Overexpression of collagen is a hallmark of organ fibrosis. Here, we describe the optimization of a collagen-targeted positron emission tomography (PET) probe for staging pulmonary fibrosis. Methods: Six peptides were synthesized, conjugated to a copper chelator, and radiolabeled with copper-64. The collagen affinity of each probe was measured in a plate-based assay...
June 13, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28611214/interplay-between-tolerance-mechanisms-to-copper-and-acid-stress-in-escherichia-coli
#7
Karrera Y Djoko, Minh-Duy Phan, Kate M Peters, Mark J Walker, Mark A Schembri, Alastair G McEwan
Copper (Cu) is a key antibacterial component of the host innate immune system and almost all bacterial species possess systems that defend against the toxic effects of excess Cu. The Cu tolerance system in Gram-negative bacteria is composed minimally of a Cu sensor (CueR) and a Cu export pump (CopA). The cueR and copA genes are encoded on the chromosome typically as a divergent but contiguous operon. In Escherichia coli, cueR and copA are separated by two additional genes, ybaS and ybaT, which confer glutamine (Gln)-dependent acid tolerance and contribute to the glutamate (Glu)-dependent acid resistance system in this organism...
June 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28608638/effect-of-different-levels-of-copper-nanoparticles-and-copper-sulphate-on-performance-metabolism-and-blood-biochemical-profiles-in-broiler-chicken
#8
A Scott, K P Vadalasetty, M Łukasiewicz, S Jaworski, M Wierzbicki, A Chwalibog, E Sawosz
A study was conducted to investigate the influence of copper administration in ovo to chicken embryos and/or supplied in drinking water to growing chickens in the form copper nanoparticles (Cu-NP) or copper sulphate (CuSO4 ). The fertilised eggs were assigned to three groups (n = 50 per group): control (not injected), injected with 50 mg/kg Cu-NP or with 50 mg/kg CuSO4 at day 1 of incubation. Thereafter, 126 one-day-old broiler chickens were randomly assigned to seven post-hatched groups: control not injected and not provided with Cu in the drinking water, injected with 50 mg/kg Cu-NP + 20 mg/kg in water, not injected + 20 mg/kg Cu-NP in water, injected with 50 mg/kg CuSO4  + 20 mg/kg in water, not injected + 20 mg/kg CuSO4 in water, injected with 50 mg/kg Cu-NP and injected with 50 mg/kg CuSO4 ...
June 13, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28604741/a-novel-nuclear-complex-of-drr1-f-actin-and-commd1-involved-in-nf-%C3%AE%C2%BAb-degradation-and-cell-growth-suppression-in-neuroblastoma
#9
P Mu, T Akashi, F Lu, S Kishida, K Kadomatsu
Downregulated in renal cell carcinoma 1 (DRR1) has important roles in tumor cell growth, neuron survival and spine formation, and was recently shown to bind actin. However, the roles of nuclear DRR1 remain largely unexplored. Here, we identified an interaction between filamentous actin (F-actin) and DRR1 in the nucleus, and demonstrated that copper metabolism MURR1 domain-containing 1 (COMMD1) is another binding partner of DRR1. Accordingly, DRR1, F-actin and COMMD1 were shown to form a complex in the nucleus, and the stability of COMMD1 was enhanced in this complex...
June 12, 2017: Oncogene
https://www.readbyqxmd.com/read/28601647/metalloproteomic-and-differential-expression-in-plasma-in-a-rat-model-of-type-1-diabetes
#10
Camila Pereira Braga, José Cavalcante Souza Vieira, Aline de Lima Leite, Ana Angélica Henrique Fernandes, Marília Afonso Rabelo Buzalaf, Pedro de Magalhães Padilha
Type 1 diabetes is characterized by hyperglycemia, which in the chronic stage is associated with abnormalities in lipids, protein and, carbohydrate metabolism, as well as oxidative stress. New strategies for prevention and treatment are needed, as type 1 diabetes affects life quality and survival, and involves high-cost treatment. Proteomic and metalloproteomic studies can elucidate the functional and physiological aspects of biomolecules. In the present study, differential proteomics was used to identify potential biomarkers of diabetes in rat plasma associated with copper, selenium, zinc, and magnesium fractionation in control and diabetic rats, as well as diabetic rats treated with insulin...
June 8, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28600889/a-novel-versatile-precursor-suitable-for-18-f-radiolabelling-via-click-chemistry
#11
B Lugato, S Stucchi, S Ciceri, M N Iannone, E A Turolla, L Giuliano, C Chinello, S Todde, P Ferraboschi
As an effort to improve (18) F radiolabelling of biomolecules in terms of method robustness and versatility, we report the synthesis and radiolabelling of a new azido precursor potentially useful for the so called "click-reaction", in particular the ligand-free version of the copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC). The new azido precursor may help to overcome problems sometimes exhibited by most of the currently used analogues, as it is safe to handle and it displays long term chemical stability, thus facilitating the development of new radiolabelling procedures...
June 10, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28599127/sensitivity-of-two-green-microalgae-to-copper-stress-growth-oxidative-and-antioxidants-analyses
#12
Seham M Hamed, Samy Selim, Gerd Klöck, Hamada AbdElgawad
Depending on species, heavy metals, including copper (Cu), differentially affect algal growth and metabolism. Here, we aim to evaluate the differential responses of two green microalgae, Chlorella sorokiniana and Scenedesmus acuminatus, exposed to sub-lethal doses of Cu (25 and 50µM, respectively) for 7 days. The changes in growth, oxidative damage markers, and antioxidants were analysed. We found that S. acuminatus could acclimatise during long-term exposure to Cu stress. S. acuminatus accumulated lower Cu content and showed a slight decrease in H2O2 levels when compared to C...
June 6, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28598392/the-functions-of-metamorphic-metallothioneins-in-zinc-and-copper-metabolism
#13
REVIEW
Artur Krężel, Wolfgang Maret
Recent discoveries in zinc biology provide a new platform for discussing the primary physiological functions of mammalian metallothioneins (MTs) and their exquisite zinc-dependent regulation. It is now understood that the control of cellular zinc homeostasis includes buffering of Zn(2+) ions at picomolar concentrations, extensive subcellular re-distribution of Zn(2+), the loading of exocytotic vesicles with zinc species, and the control of Zn(2+) ion signalling. In parallel, characteristic features of human MTs became known: their graded affinities for Zn(2+) and the redox activity of their thiolate coordination environments...
June 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28589284/evaluation-on-subcellular-partitioning-and-biodynamics-of-pulse-copper-toxicity-in-tilapia-reveals-impacts-of-a-major-environmental-disturbance
#14
Yun-Ru Ju, Ying-Fei Yang, Jeng-Wei Tsai, Yi-Hsien Cheng, Wei-Yu Chen, Chung-Min Liao
Fluctuation exposure of trace metal copper (Cu) is ubiquitous in aquatic environments. The purpose of this study was to investigate the impacts of chronically pulsed exposure on biodynamics and subcellular partitioning of Cu in freshwater tilapia (Oreochromis mossambicus). Long-term 28-day pulsed Cu exposure experiments were performed to explore subcellular partitioning and toxicokinetics/toxicodynamics of Cu in tilapia. Subcellular partitioning linking with a metal influx scheme was used to estimate detoxification and elimination rates...
June 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28588179/childhood-wilson-disease-bangladesh-perspective
#15
M Rukunuzzaman, A B Karim, M Nurullah, F Sultana, M W Mazumder, M A Rahman, S B Billah, F Begum, M Oliullah
Wilson's disease (WD) is an autosomal recessive disorder affecting copper metabolism causing copper induced damage to various organs. In children liver is commonly involved. Central nervous system, eyes, RBC, kidneys, brain and bones may also be affected. Aim of the study is to evaluate clinical & laboratory profile of Wilson's disease in children. This cross sectional descriptive study was conducted at the department of Paediatric Gastroenterology and Nutrition, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh, from January 2011 to December, 2013...
April 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28587162/glutathione-mediated-cu-i-cu-ii-complexes-valence-dependent-effects-on-clearance-and-in-vivo-imaging-application
#16
Su-Na Yin, Yuanyuan Liu, Chen Zhou, Shengyang Yang
Contrast imaging agents need to be cleared in a reasonable time (less than 72 h), so it is quite urgent to understand the structure, biocompatibility, and metabolism features of imaging agents. In this work, luminescent Cu(I)-GSH complex and their derivative oxidized Cu(II)-GSSG complex have been easily synthesized. Through systematically probing the renal clearance and biodistribution of the as-prepared copper complexes, we found that Cu(I)-GSH complex revealed much more efficient renal clearance and remarkably lower liver accumulation than that of their oxidation states, which could be due to strong protein binding of partial forms of Cu(II)-GSSG complex...
June 1, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28583949/bosr-is-a-novel-fur-family-member-responsive-to-copper-and-regulating-copper-homeostasis-in-borrelia-burgdorferi
#17
Peng Wang, Zhuoteng Yu, Thomas J Santangelo, John Olesik, Yufeng Wang, Ekaterina Heldwein, Xin Li
The ferric uptake regulator (Fur) family of DNA-binding proteins represses and/or activates gene transcription via divalent metal ion-dependent signal sensing. The Borrelia burgdorferi Fur homologue, also known as Borrelia oxidative stress regulator (BosR), promotes spirochetal adaptation to the mammalian host by directly repressing the lipoproteins required for tick colonization and indirectly activating those required for establishing infection in the mammal. Here, we examined whether the DNA-binding activity of BosR was regulated by any of the four most prevalent transition metal ions in B...
June 5, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28582715/in%C3%A2-vivo-stem-cell-tracking-with-imageable-nanoparticles-that-bind-bioorthogonal-chemical-receptors-on-the-stem-cell-surface
#18
Sangmin Lee, Hwa In Yoon, Jin Hee Na, Sangmin Jeon, Seungho Lim, Heebeom Koo, Sang-Soo Han, Sun-Woong Kang, Soon-Jung Park, Sung-Hwan Moon, Jae Hyung Park, Yong Woo Cho, Byung-Soo Kim, Sang Kyoon Kim, Taekwan Lee, Dongkyu Kim, Seulki Lee, Martin G Pomper, Ick Chan Kwon, Kwangmeyung Kim
It is urgently necessary to develop reliable non-invasive stem cell imaging technology for tracking the in vivo fate of transplanted stem cells in living subjects. Herein, we developed a simple and well controlled stem cell imaging method through a combination of metabolic glycoengineering and bioorthogonal copper-free click chemistry. Firstly, the exogenous chemical receptors containing azide (-N3) groups were generated on the surfaces of stem cells through metabolic glycoengineering using metabolic precursor, tetra-acetylated N-azidoacetyl-d-mannosamine(Ac4ManNAz)...
September 2017: Biomaterials
https://www.readbyqxmd.com/read/28577988/nexus-between-mitochondrial-function-iron-copper-and-glutathione-in-parkinson-s-disease
#19
Jeffrey R Liddell, Anthony R White
Parkinson's disease is neuropathologically characterised by loss of catecholamine neurons in vulnerable brain regions including substantia nigra pars compacta and locus coeruleus. This review discusses how the susceptibility of these regions is defined by their shared biochemical characteristics that differentiate them from other neurons. Parkinson's disease is biochemically characterised by mitochondrial dysfunction, accumulation of iron, diminished copper content and depleted glutathione levels in these regions...
May 31, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28576871/steap4-its-emerging-role-in-metabolism-and-homeostasis-of-cellular-iron-and-copper
#20
Rachel T Scarl, C Martin Lawrence, Hannah M Gordon, Craig S Nunemaker
Preserving energy homeostasis in the presence of stressors such as proinflammatory cytokines and nutrient overload is crucial to maintaining normal cellular function. Six-transmembrane epithelial antigen of the prostate 4 (STEAP4), a metalloreductase involved in iron and copper homeostasis, is thought to play a potentially important role in the cellular response to inflammatory stress. Genome-wide association studies have linked various mutations in STEAP4 with the development of metabolic disorders such as obesity, metabolic syndrome, and type 2 diabetes...
June 2, 2017: Journal of Endocrinology
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