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copper metabolism

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https://www.readbyqxmd.com/read/27911810/in-vivo-bioluminescence-imaging-reveals-copper-deficiency-in-a-murine-model-of-nonalcoholic-fatty-liver-disease
#1
Marie C Heffern, Hyo Min Park, Ho Yu Au-Yeung, Genevieve C Van de Bittner, Cheri M Ackerman, Andreas Stahl, Christopher J Chang
Copper is a required metal nutrient for life, but global or local alterations in its homeostasis are linked to diseases spanning genetic and metabolic disorders to cancer and neurodegeneration. Technologies that enable longitudinal in vivo monitoring of dynamic copper pools can help meet the need to study the complex interplay between copper status, health, and disease in the same living organism over time. Here, we present the synthesis, characterization, and in vivo imaging applications of Copper-Caged Luciferin-1 (CCL-1), a bioluminescent reporter for tissue-specific copper visualization in living animals...
November 29, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27908400/low-hepatic-copper-content-and-pnpla3-polymorphism-in-non-alcoholic-fatty-liver-disease-in-patients-without-metabolic-syndrome
#2
Albert Friedrich Stättermayer, Stefan Traussnigg, Elmar Aigner, Christian Kienbacher, Ursula Huber-Schönauer, Petra Steindl-Munda, Andreas Stadlmayr, Friedrich Wrba, Michael Trauner, Christian Datz, Peter Ferenci
INTRODUCTION: The pathogenesis of non-alcoholic fatty liver disease (NAFLD) is multifactorial including metabolic, genetic (e.g. PNPLA3 [patatin-like phospholipase domain-containing 3 gene]), viral factors and drugs. Besides, there is evidence for a role of copper deficiency. Aim of the study was to evaluate the role of hepatic copper content, PNPLA3 in NAFLD patients with and without metabolic syndrome (MetS). METHODS: One-hundred seventy-four NAFLD patients, who underwent liver biopsy for diagnostic work-up, were studied...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27908399/serum-copper-concentrations-in-hospitalized-newborns
#3
Ricardo González-Tarancón, Luisa Calvo-Ruata, Maite Aramendía, Carmen Ortega, Elena García-González, Luis Rello
BACKGROUND: Low serum Cu and ceruloplasmin (Cp) concentrations in newborns can be the first indication of a severe Cu deficient intake or, alternatively, of genetic diseases affecting Cu metabolism. However, Cu and Cp concentrations can also be influenced by other variables that render their quantitative results difficult to interpret. Therefore, it is necessary to identify these variables and stratify Cu and Cp concentrations according to these altering factors. METHODS: Serum Cu and Cp concentrations for 564 hospitalized newborns (0-12days of life) are stratified according to their age, prematurity (birth weight or gestational age), type of feeding and inflammatory state (assessed by the serum high sensitivity C-reactive protein (hs-CRP) level) to identify potential correlations...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27898334/relative-contribution-of-ammonia-oxidizing-bacteria-and-other-members-of-nitrifying-activated-sludge-communities-to-micropollutant-biotransformation
#4
Yujie Men, Stefan Achermann, Damian E Helbling, David R Johnson, Kathrin Fenner
Improved micropollutant (MP) biotransformation during biological wastewater treatment has been associated with high ammonia oxidation activities, suggesting co-metabolic biotransformation by ammonia oxidizing bacteria as an underlying mechanism. The goal of this study was to clarify the contribution of ammonia oxidizing bacteria to increased MP degradation in nitrifying activated sludge (NAS) communities using a series of inhibition experiments. To this end, we treated a NAS community with two different ammonia oxidation inhibitors, namely octyne (OCT), a mechanistic inhibitor that covalently binds to ammonia monooxygenases, and allylthiourea (ATU), a copper chelator that depletes copper ions from the active center of ammonia monooxygenases...
November 22, 2016: Water Research
https://www.readbyqxmd.com/read/27896900/molecular-features-of-copper-binding-proteins-involved-in-copper-homeostasis
#5
REVIEW
Giuseppe Inesi
Copper has a wide and important role in biological systems, determining conformation and activity of many metalloproteins and enzymes, such as cytochrome oxidase and superoxide dismutase . Furthermore, due to its possible reactivity with nonspecific proteins and toxic effects, elaborate systems of absorption, concentration buffering, delivery to specific protein sites and elimination, require a complex system including small carriers, chaperones and active transporters. The P-type copper ATPases ATP7A and ATP7B provide an important system for acquisition, active transport, distribution and elimination of copper...
November 28, 2016: IUBMB Life
https://www.readbyqxmd.com/read/27895622/serum-zn-cu-ratio-is-associated-with-renal-function-glycemic-control-and-metabolic-parameters-in-japanese-patients-with-and-without-type-2-diabetes-a-cross-sectional-study
#6
Hidetaka Hamasaki, Yu Kawashima, Hidekatsu Yanai
BACKGROUND: Zinc (Zn) and copper (Cu) may play a pivotal role in the pathogenesis of diabetes and diabetic complications by mediating oxidative stress. Both Zn deficiency and excess of Cu are associated with an increased risk of type 2 diabetes and cardiovascular disease. We aimed to investigate the relationships between serum Zn/Cu ratio and glycemic status, renal function, and metabolic parameters in patients with and without type 2 diabetes. METHODS: We conducted a cross-sectional study on 355 subjects (149 type 2 diabetic and 206 non-diabetic) in whom serum Zn and Cu levels were measured at the same time...
2016: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/27890316/is-there-a-dependence-between-children-s-body-weight-and-the-concentration-of-metals-in-deciduous-teeth
#7
Agnieszka Fischer, Danuta Wiechuła
Malnutrition, manifested by both overweight and underweight, can lead to serious health consequences. The subject of the study was to determine the concentration of elements such as chromium (Cr), calcium (Ca), copper (Cu), iron (Fe) and manganese (Mn) in children's deciduous teeth in relation to their body weight. The calculated body mass index (BMI) values and an application of the growth chart showed that 59% of children among the studied sample had normal weight. In 41% of children, weight disorders were observed including underweight - 28% and overweight - 12%...
September 19, 2016: Homo: Internationale Zeitschrift Für die Vergleichende Forschung Am Menschen
https://www.readbyqxmd.com/read/27889087/characterisation-of-the-phenanthrene-degradation-related-genes-and-degrading-ability-of-a-newly-isolated-copper-tolerant-bacterium
#8
Mengke Song, Ying Yang, Longfei Jiang, Qing Hong, Dayi Zhang, Zhenguo Shen, Hua Yin, Chunling Luo
A copper-tolerant phenanthrene (PHE)-degrading bacterium, strain Sphingobium sp. PHE-1, was newly isolated from the activated sludge in a wastewater treatment plant. Two key genes, ahdA1b-1 encoding polycyclic aromatic hydrocarbon ring-hydroxylating dioxygenase (PAH-RHDɑ) and xyLE encoding catechol-2,3-dioxygenase (C23O), involved in the PHE metabolism by strain PHE-1 were identified. The PAH-RHD gene cluster showed 96% identity with the same cluster of Sphingomonas sp. P2. Our results indicated the induced transcription of xylE and ahdA1b-1 genes by PHE, simultaneously promoted by Cu(II)...
November 23, 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27888452/the-influence-of-the-dietary-cu-glycine-complex-on-the-histomorphology-of-cancellous-bone-articular-cartilage-and-growth-plate-as-well-as-bone-mechanical-and-geometric-parameters-is-dose-dependent
#9
Ewa Tomaszewska, Piotr Dobrowolski, Małgorzata Kwiecień, Anna Winiarska-Mieczan, Agnieszka Tomczyk, Siemowit Muszyński
Copper (Cu) is required for all basic biochemical and physiological processes. The objective of this study was to compare the effect of two different chemical forms (sulfates and glycinate chelates also below the recommended dose) of Cu administered to adult rats on the biomechanical and morphometric properties of femur. Male rats at the age of 12 weeks were used in the 12-week experiment. The control diet provided the required Cu level from sulfate (S-Cu), and the other diets were supplemented with Cu-glycine complex...
November 26, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27881675/the-intestinal-copper-exporter-cua-1-is-required-for-systemic-copper-homeostasis-in-caenorhabditis-elegans
#10
Haarin Chun, Anuj Kumar Sharma, Jaekwon Lee, Jefferson Chan, Shang Jia, Byung-Eun Kim
Copper (Cu) plays key catalytic and regulatory roles in biochemical processes essential for normal growth, development, and health. Defects in Cu metabolism cause Menkes and Wilson's disease, myeloneuropathy, and cardiovascular disease and are associated with other pathophysiological states. Consequently, it is critical to understand the mechanisms by which organisms control the acquisition, distribution, and utilization of Cu. The intestinal enterocyte is a key regulatory point for Cu absorption into the body, however the mechanisms by which intestinal cells transport Cu to maintain organismal Cu homeostasis are poorly understood...
November 23, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27881232/serum-copper-zinc-and-iron-levels-and-markers-of-carbohydrate-metabolism-in-postmenopausal-women-with-prediabetes-and-type-2-diabetes-mellitus
#11
Margarita G Skalnaya, Anatoly V Skalny, Alexey A Tinkov
The objective of the present study was to evaluate serum level of copper, zinc, iron and metabolic parameters in postmenopausal women with diabetes. A total of 413 postmenopausal women were enrolled in the current study. Women were divided into 4 groups with equal age and body mass index according to glycated hemoglobin (HbA1c) levels (≤5.5; 5.5-6.0; 6.0-6.5; >6.5%). Serum Fe, Cu, and Zn levels were assessed using inductively-coupled plasma mass-spectrometry. Blood HbA1c, serum glucose, insulin, C-reactive protein (CRP), ferritin, and ceruloplasmin (Cp) were assessed using commercial kits...
November 16, 2016: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27878745/characterization-of-a-marine-microbial-community-used-for-enhanced-sulfate-reduction-and-copper-precipitation-in-a-two-step-process
#12
Octavio García-Depraect, Claudia Guerrero-Barajas, Janet Jan-Roblero, Alberto Ordaz
Marine microorganisms that are obtained from hydrothermal vent sediments present a great metabolic potential for applications in environmental biotechnology. However, the work done regarding their applications in engineered systems is still scarce. Hence, in this work, the sulfate reduction process carried out by a marine microbial community in an upflow anaerobic sludge blanket (UASB) reactor was investigated for 190 days under sequential batch mode. The effects of 1000 to 5500 mg L(-1) of SO4(-2) and the chemical oxygen demand (COD)/SO4(-2) ratio were studied along with a kinetic characterization with lactate as the electron donor...
November 23, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27877177/comparative-transcriptomic-analyses-of-differentially-expressed-genes-in-transgenic-melatonin-biosynthesis-ovine-hiomt-gene-in-switchgrass
#13
Shan Yuan, Cong Guan, Sijia Liu, Yanhua Huang, Danyang Tian, Xin Cui, Yunwei Zhang, Fuyu Yang
Melatonin serves pleiotropic functions in prompting plant growth and resistance to various stresses. The accurate biosynthetic pathway of melatonin remains elusive in plant species, while the N-acetyltransferase and O-methyltransferase were considered to be the last two key enzymes during its biosynthesis. To investigate the biosynthesis and metabolic pathway of melatonin in plants, the RNA-seq profile of overexpression of the ovine HIOMT was analyzed and compared with the previous transcriptome of transgenic oAANAT gene in switchgrass, a model plant for cellulosic ethanol production...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27869428/-hemolytic-anemia-as-the-first-clinical-presentation-of-wilson-disease-a-pediatric-case
#14
José A Henao C, Kathia Valverde Muñoz, María L Ávila A
: Wilson disease is an autosomal recessive disorder of the copper's hepatic metabolism; it results in toxicity due to accumulation of the mineral. The hemolytic anemia is present in 17% at some point of the disease, although it is a rare initial clinical presentation. CASE REPORT: 11 years old boy who presented with negative Coombs hemolytic anemia and elevation of liver enzymes. The possibility of Wilson disease was considered, which was confirmed with the finding of a Kayser-Fleischer ring in the eye exam...
December 1, 2016: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/27864666/evaluation-of-serum-trace-element-levels-and-superoxide-dismutase-activity-in-patients-with-inflammatory-bowel-disease-translating-basic-research-into-clinical-application
#15
Erfan Mohammadi, Durdi Qujeq, Hassan Taheri, Karimollah Hajian-Tilaki
The relationship of minerals and trace elements with inflammatory bowel disease (IBD) is complex. Alterations in their metabolism can be induced by the diseases and their complications. To study the role of trace elements in IBD patients' serum zinc and copper and their related enzymes, including superoxide dismutase (SOD), activity were measured in patients with IBD patients as well as in healthy subjects. In addition, the correlation between serum trace element levels, albumin, total protein, urea level, copper/zinc ratio, and disease activity (DA) was determined in these subjects...
November 18, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27863144/effect-of-copper-variation-in-yeast-hydrolysate-on-c-terminal-lysine-levels-of-a-monoclonal-antibody
#16
Fernie G Mitchelson, Jessica P Mondia, Erik H Hughes
The ability to control charge heterogeneity in monoclonal antibodies is important to demonstrate product quality comparability and consistency. This paper addresses the control of C-terminal lysine processing through copper supplementation to yeast hydrolysate powder, a raw material used in the cell culture process. Large-scale production of a murine cell line exhibited variation in the C-terminal lysine levels of the monoclonal antibody. Analysis of process data showed that this variation correlated well with shifts in cell lactate metabolism and pH levels of the production culture...
November 14, 2016: Biotechnology Progress
https://www.readbyqxmd.com/read/27853966/remediation-of-cu-metal-induced-accelerated-fenton-reaction-by-potato-peels-bio-sorbent
#17
Rafia Azmat, Sumeira Moin, Ailyan Saleem
This article has allied exposure to Ecological Particulate Matter (EPM) and its remediation using potato peel surface (PPC) bio-sorbent on two important edible crops Spinacia oleracea and Luffa acutangula. Fenton reaction acceleration was one of the major stress oxidation reactions as a consequence of iron and copper toxicity, which involve in the formation of hydroxyl radical (OH) through EPM. Results showed that the oxidative stress encouraged by Cu in both species that recruits the degradation of photosynthetic pigments, initiating decline in growth, reduced leaf area and degrade proteins...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27834478/iron-overload-and-nonalcoholic-fatty-liver-disease
#18
Christian Datz, Elena Müller, Elmar Aigner
Approximately one third of patients with non-alcoholic fatty liver disease (NAFLD) show signs of disturbed iron homeostasis as indicated by elevated serum ferritin with normal or mildly elevated transferrin saturation. Mild hepatic iron deposition is the typical histological finding in these subjects and the term "dysmetabolic iron overload syndrome (DIOS)" is now used to describe this syndrome. From a clinical point of view, excess iron likely aggravates the natural course of NAFLD with regard to liver-related endpoints and extrahepatic disease complications although sound evidence is still lacking...
November 11, 2016: Minerva Endocrinologica
https://www.readbyqxmd.com/read/27807137/methanobactin-transport-machinery
#19
Laura M K Dassama, Grace E Kenney, Soo Y Ro, Eliza L Zielazinski, Amy C Rosenzweig
Methanotrophic bacteria use methane, a potent greenhouse gas, as their primary source of carbon and energy. The first step in methane metabolism is its oxidation to methanol. In almost all methanotrophs, this chemically challenging reaction is catalyzed by particulate methane monooxygenase (pMMO), a copper-dependent integral membrane enzyme. Methanotrophs acquire copper (Cu) for pMMO by secreting a small ribosomally produced, posttranslationally modified natural product called methanobactin (Mbn). Mbn chelates Cu with high affinity, and the Cu-loaded form (CuMbn) is reinternalized into the cell via an active transport process...
November 2, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27793066/potential-influence-of-selenium-copper-zinc-and-cadmium-on-l-thyroxine-substitution-in-patients-with-hashimoto-thyroiditis-and-hypothyroidism
#20
Z Rasic-Milutinovic, D Jovanovic, G Bogdanovic, J Trifunovic, J Mutic
Background: Besides genetic factors, it is known that some trace elements, as Selenium, Copper, and Zinc are essential for thyroid gland fuction and thyroid hormone metabolism. Moreover, there were some metals effect that suggested patterns associated with overt thyroid disease. Aim of study: Hashimoto thyroiditis (HT), chronic autoimune inflamation of thyroid gland with cosequtive hipothyroidism, is common disease in Serbia, and we thought it is worthwile to explore potential effects of essential and toxic metals and metalloides on thyroid function and ability to restore euthyroid status of them...
October 28, 2016: Experimental and Clinical Endocrinology & Diabetes
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