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copper metabolism

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https://www.readbyqxmd.com/read/28100855/trace-elements-as-an-activator-of-antioxidant-enzymes
#1
Marta Wołonciej, Elżbieta Milewska, Wiesława Roszkowska-Jakimiec
Oxidative stress is a state of impaired balance between the formation of free radicals and antioxidant capacity of the body. It causes many defects of the body, e.g. lipid peroxidation, DNA and protein damage. In order to prevent the effects of oxidative stress, the organism has developed defence mechanisms. These mechanisms capture and inhibit the formation of free radicals and also chelate ion metals that catalyse free radical reactions. Trace elements are components of antioxidant enzymes involved in antioxidant mechanisms...
December 31, 2016: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28097080/immunoglobulin-m-nephropathy-in-a-patient-with-wilson-s-disease
#2
Zain Ul Abideen, Zoya Sajjad, Asna Haroon Khan, Nadira Mamoon, Muhammad Bilal, Khaja Hameeduddin Mujtaba Quadri
Immunoglobulin M nephropathy (IgMN) is characterized by the deposition of immunoglobulin M in a dominant distribution in the renal glomeruli. Primary immunoglobulin M nephropathy is diagnosed after consistent light microscopy (LM), immunofluorescence (IF), electron microscopy (EM) results, and exclusion of known systemic disorders causing immunoglobulin M deposition in the glomeruli. The secondary disease has been reported with a few conditions though it has never been reported with any primary disease of the liver...
December 13, 2016: Curēus
https://www.readbyqxmd.com/read/28093838/fusaric-acid-contributes-to-virulence-of-fusarium-oxysporum-on-plant-and-mammalian-hosts
#3
Cristina López-Díaz, Vahid Rahjoo, Michael Sulyok, Veronica Ghionna, Adela Martín-Vicente, Javier Capilla, Antonio Di Pietro, Manuel S López-Berges
Fusaric acid (FA) is among the oldest identified secondary metabolites produced by Fusarium species, known for a long time to display strong phytotoxicity and moderate toxicity to animal cells; however, the cellular targets of FA as well as its function in fungal pathogenicity remain unknown. Here, we investigated the role of FA in Fusarium oxysporum, a soil-borne cross-kingdom pathogen that causes vascular wilt on more than a hundred plant species and opportunistic infections in humans. Targeted deletion of fub1, encoding a predicted orthologue of the polyketide synthase involved in FA biosynthesis in F...
January 17, 2017: Molecular Plant Pathology
https://www.readbyqxmd.com/read/28091954/methane-alleviates-copper-induced-seed-germination-inhibition-and-oxidative-stress-in-medicago-sativa
#4
Muhammad Kaleem Samma, Heng Zhou, Weiti Cui, Kaikai Zhu, Jing Zhang, Wenbiao Shen
Recent results discovered the protective roles of methane (CH4) against oxidative stress in animals. However, the possible physiological roles of CH4 in plants are still unknown. By using physiological, histochemical and molecular approaches, the beneficial role of CH4 in germinating alfalfa seeds upon copper (Cu) stress was evaluated. Endogenous production of CH4 was significantly increased in Cu-stressed alfalfa seeds, which was mimicked by 0.39 mM CH4. The pretreatment with CH4 significantly alleviated the inhibition of seed germination and seedling growth induced by Cu stress...
January 13, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28089327/ceruloplasmin-gene-expression-profile-changes-in-the-rat-mammary-gland-during-pregnancy-lactation-and-involution
#5
Natalia A Platonova, Iurii A Orlov, Sergey A Klotchenko, Victor S Babich, Ekaterina Y Ilyechova, Polina S Babich, Yuri P Garmai, Andrey V Vasin, Nadezhda V Tsymbalenko, Liudmila V Puchkova
Copper metabolism disturbances in mammary gland (MG) cells have severe consequences in newborns. The mechanism that controls the balance of copper in the MG has not been thoroughly characterized. Four primary copper homeostasis genes in mammals: (1) ceruloplasmin (Cp) encoding multifunction multicopper blue (ferr)oxidase; (2) CTR1 encoding high affinity copper importer 1; and (3 and 4) two similar genes encoding Cu(I)/Cu(II)-ATPases P1 type (ATP7A and ATP7B) responsible for copper efflux from the cells and metallation of cuproenzymes formed in the Golgi complex are expressed in MG...
January 3, 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28072820/p-cymene-promotes-its-catabolism-through-the-p-cymene-and-the-p-cumate-pathways-activates-a-stress-response-and-reduces-the-biofilm-formation-in-burkholderia-xenovorans-lb400
#6
Loreine Agulló, María José Romero-Silva, Mirian Domenech, Michael Seeger
p-Cymene is an aromatic terpene that is present in diverse plant species. The aims of this study were to study the p-cymene metabolism in the model aromatic-degrading bacterium Burkholderia xenovorans LB400, and its response to p-cymene. The catabolic p-cymene (cym) and p-cumate (cmt) genes are clustered on the LB400 major chromosome. B. xenovorans LB400 was able to grow on p-cymene as well as on p-cumate as a sole carbon and energy sources. LB400 growth attained higher cell concentration at stationary phase on p-cumate than on p-cymene...
2017: PloS One
https://www.readbyqxmd.com/read/28063745/canine-copper-associated-hepatitis
#7
REVIEW
Karen Dirksen, Hille Fieten
Copper-associated hepatitis is recognized with increasing frequency in dogs. The disease is characterized by centrolobular hepatic copper accumulation, leading to hepatitis and eventually cirrhosis. The only way to establish the diagnosis is by histologic assessment of copper distribution and copper quantification in a liver biopsy. Treatment with the copper chelator d-penicillamine is the most commonly used treatment. In addition, a low-copper/high-zinc diet can help prevent accumulation or reaccumulation of hepatic copper...
January 5, 2017: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/28063516/massive-copper-and-selenium-losses-cause-life-threatening-deficiencies-during-prolonged-continuous-renal-replacement
#8
Nawfel Ben-Hamouda, Mélanie Charrière, Pierre Voirol, Mette M Berger
OBJECTIVE: Several trace elements are essential for immunity and wound healing, particularly after major burns. Continuous renal replacement therapy (CRRT), which is used to treat renal failure, causes significant trace elements losses. The aim of the present review is to update the current literature and draw attention to this type of complication, as copper deficiency is rarely suspected and diagnosed in clinical conditions and may occur in chronic critically ill patients. METHODS: This is an emblematic case report and review of literature...
February 2017: Nutrition
https://www.readbyqxmd.com/read/28061974/the-role-of-elements-in-anxiety
#9
K Młyniec, M Gaweł, U Doboszewska, G Starowicz, G Nowak
Elements (bioelements) are necessary factors required for the physiological function of organisms. They are critically involved in fundamental processes of life. Extra- and intracellular message and metabolic pathway factors as well as structural components include one or many elements in their functional structure. Recent years have seen an intensification in terms of knowledge gained about the roles of elements in anxiety disorders. In this chapter we present a review of the most important current data concerning the involvement of zinc, magnesium, copper, lithium, iron, and manganese, and their deficiency, in the pathophysiology and treatment of anxiety...
2017: Vitamins and Hormones
https://www.readbyqxmd.com/read/28059470/levels-of-heavy-metals-and-their-binding-protein-metallothionein-in-type-2-diabetics-with-kidney-disease
#10
Martina Raudenska, Veronika Dvorakova, Lukas Pacal, Katarina Chalasova, Monika Kratochvilova, Jaromir Gumulec, Branislav Ruttkay-Nedecky, Ondrej Zitka, Katerina Kankova, Vojtech Adam, Michal Masarik
Hyperglycemia, a major metabolic disturbance present in diabetes, promotes oxidative stress. Activation of antioxidant defense is an important mechanism to prevent cell damage. Levels of heavy metals and their binding proteins can contribute to oxidative stress. Antiradical capacity and levels of metallothionein (MT), metals (zinc and copper), and selected antioxidants (bilirubin, cysteine, and glutathione) were determined in 70 type 2 diabetes mellitus (T2DM) subjects and 80 healthy subjects of Caucasian origin...
January 6, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28057574/a-proteomic-approach-to-identify-metalloproteins-and-metal-binding-proteins-in-liver-from-diabetic-rats
#11
Camila Pereira Braga, José Cavalcante Souza Vieira, Ryan A Grove, Cory H T Boone, Aline de Lima Leite, Marília Afonso Rabelo Buzalaf, Ana Angélica Henrique Fernandes, Jiri Adamec, Pedro de Magalhaes Padilha
Proteins play crucial roles in biological systems, thus studies comparing the protein pattern present in a healthy sample with an affected sample have been widely used for disease biomarker discovery. Although proteins containing metal ions constitute only a small proportion of the proteome, they are essential in a multitude of structural and functional processes. The correct association between metal ions and proteins is essential because this binding can significantly interfere with normal protein function...
January 3, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28056071/species-specific-responses-of-juvenile-rockfish-to-elevated-pco2-from-behavior-to-genomics
#12
Scott L Hamilton, Cheryl A Logan, Hamilton W Fennie, Susan M Sogard, James P Barry, April D Makukhov, Lauren R Tobosa, Kirsten Boyer, Christopher F Lovera, Giacomo Bernardi
In the California Current ecosystem, global climate change is predicted to trigger large-scale changes in ocean chemistry within this century. Ocean acidification-which occurs when increased levels of atmospheric CO2 dissolve into the ocean-is one of the biggest potential threats to marine life. In a coastal upwelling system, we compared the effects of chronic exposure to low pH (elevated pCO2) at four treatment levels (i.e., pCO2 = ambient [500], moderate [750], high [1900], and extreme [2800 μatm]) on behavior, physiology, and patterns of gene expression in white muscle tissue of juvenile rockfish (genus Sebastes), integrating responses from the transcriptome to the whole organism level...
2017: PloS One
https://www.readbyqxmd.com/read/28051325/measurement-of-thermal-conductivities-of-two-cryoprotective-agent-solutions-for-vitreous-cryopreservation-of-organs-at-the-temperature-range-of-77%C3%A2-k-300%C3%A2-k-using-a-thermal-sensor-made-of-microscale-enamel-copper-wire
#13
Yufang Li, Gang Zhao, S M Chapal Hossain, Fazil Panhwar, Wenyu Sun, Fei Kong, Chuanbao Zang, Zhendong Jiang
Biobanking of organs by cryopreservation is an enabling technology for organ transplantation. Compared with the conventional slow freezing method, vitreous cryopreservation has been regarded to be a more promising approach for long-term storage of organs. The major challenges to vitrification are devitrification and recrystallization during the warming process, and high concentrations of cryoprotective agents (CPAs) induced metabolic and osmotic injuries. For a theoretical model based optimization of vitrification, thermal properties of CPA solutions are indispensable...
January 4, 2017: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/28041992/changes-in-body-composition-in-women-using-long-acting-reversible-contraception
#14
Priscilla de Nazaré Silva Dos Santos, Tessa Madden, Karen Omvig, Jeffrey F Peipert
OBJECTIVE: Users of hormonal long-acting reversible contraception (LARC) report weight gain as a side effect, but few studies have assessed body composition change among LARC users. We evaluated weight and body composition of healthy women using the levonorgestrel intrauterine system (LNG-IUS), copper intrauterine device (copper IUD) or etonogestrel implant (ENG implant). We hypothesized that weight gain and body composition over 12 months would not differ between copper IUD, LNG-IUS and ENG implant users...
December 30, 2016: Contraception
https://www.readbyqxmd.com/read/28035804/preparation-of-polymer-aunps-with-droplets-approach-for-sensing-serum-copper-ions
#15
Juan Qiao, Hong Ding, Qianrong Liu, Rongyue Zhang, Li Qi
A microfluidic droplet synthesis approach for preparation of poly N-isopropylacrylamide protected gold nano particles (PNIPAm@AuNPs) was presented here. Well dispersed PNIPAm@AuNPs could be generated within 8 min. Based on the aggregation-induced UV-vis adsorption intensity increasing mechanism, the PNIPAm@AuNPs based colorimetric probe displayed high sensitivity and good selectivity for sensing copper ions. A linear calibration of relative UV-vis adsorption intensity increasing versus copper ions concentration was obtained within 5...
December 30, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/28029585/interaction-between-airborne-copper-exposure-and-atp7b-polymorphisms-on-inattentiveness-in-scholar-children
#16
S Alemany, N Vilor-Tejedor, M Bustamante, M Álvarez-Pedrerol, I Rivas, J Forns, X Querol, J Pujol, J Sunyer
Recent research indicates that airborne copper exposure in scholar children negatively affects brain functioning. These effects are likely to be influenced by the efficiency of copper metabolism, which is partly regulated by the ATPase copper transporting beta (ATP7B) gene. We investigated whether indoor and outdoor airborne copper exposure is differentially associated with child inattentiveness depending on genetic variation within the ATP7B gene in 1645 scholar children from the BREATHE project. Outdoor (courtyard) and indoor (classroom) air pollution levels were measured during class hours in each school...
October 22, 2016: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28028457/metal-to-phosphorus-stoichiometries-for-freshwater-phytoplankton-in-three-remote-lakes
#17
Aine M Gormley-Gallagher, Richard W Douglas, Brian Rippey
Simultaneous measurements of changes in phytoplankton biomass and the metal and phosphorus (P) content of cells have been captured to attest to metal to P stoichiometries for freshwater phytoplankton. Three Scottish lakes that had received high, medium or low metal contamination from the atmosphere were selected for study. Phytoplankton cells were collected and Inductively Coupled Plasma-Mass Spectrometry was used to measure their lead (Pb), cadmium (Cd), mercury (Hg), copper (Cu), zinc (Zn), nickel (Ni), chromium (Cr), manganese (Mn), cobalt (Co) and P content...
2016: PeerJ
https://www.readbyqxmd.com/read/28008856/interaction-between-airborne-copper-exposure-and-atp7b-polymorphisms-on-inattentiveness-in-scholar-children
#18
S Alemany, N Vilor-Tejedor, M Bustamante, M Álvarez-Pedrerol, I Rivas, J Forns, X Querol, J Pujol, J Sunyer
Recent research indicates that airborne copper exposure in scholar children negatively affects brain functioning. These effects are likely to be influenced by the efficiency of copper metabolism, which is partly regulated by the ATPase copper transporting beta (ATP7B) gene. We investigated whether indoor and outdoor airborne copper exposure is differentially associated with child inattentiveness depending on genetic variation within the ATP7B gene in 1645 scholar children from the BREATHE project. Outdoor (courtyard) and indoor (classroom) air pollution levels were measured during class hours in each school...
January 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28008247/new-silver-nanoparticles-induce-apoptosis-like-process-in-e-coli-and-interfere-with-mammalian-copper-metabolism
#19
Iurii A Orlov, Tatiana P Sankova, Polina S Babich, Ilya M Sosnin, Ekaterina Yu Ilyechova, Demid A Kirilenko, Pavel N Brunkov, Gennadii L Ataev, Alexey E Romanov, Ludmila V Puchkova
Silver nanoparticles (SNPs) are new functional materials that are widely used in biomedical and industrial technologies. Two main features that make SNPs valuable are their strong antibacterial effects and low toxicity to eukaryotes. In this study, SNPs were synthesized using a modified method of reducing the metal ions to their atomic state followed by crystallization. SNPs were characterized by UV/vis spectroscopy, X-ray diffractometry, atomic force microscopy, and transmission electron microscopy (TEM). The SNPs were spherically shaped with an average linear dimension of 20 nm...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27995841/relationship-between-copper-and-lipids-and-atherogenic-indices-soon-after-birth-in-japanese-preterm-infants-of-32-35-weeks
#20
H Shoji, N Ikeda, C Kojima, T Kitamura, H Suganuma, K Hisata, S Hirayama, T Ueno, T Miida, T Shimizu
Several studies have reported association of altered levels of lipids and some trace elements with risk factors for cardiovascular disease development in adulthood. Accordingly, the present study aimed to determine the relationship among the serum levels of copper (Cu), zinc (Zn), lipids, lipoproteins and apolipoproteins in preterm infants through an assessment of atherogenic indices shortly after birth. Blood samples were collected within 20 min of birth from 45 preterm infants with gestational ages ranging from 32 to 35 weeks...
December 20, 2016: Journal of Developmental Origins of Health and Disease
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