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Ceruloplasmin

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https://www.readbyqxmd.com/read/28076308/measurements-of-serum-non-ceruloplasmin-copper-by-a-direct-fluorescent-method-specific-to-cu-ii
#1
Rosanna Squitti, Mariacristina Siotto, Emanuele Cassetta, Imane Ghafir El Idrissi, Nicola A Colabufo
BACKGROUND: Meta-analyses indicated the breakdown of copper homeostasis in the sporadic form of Alzheimer's disease (AD), comprising copper decreases within the brain and copper increases in the blood and the pool not bound to ceruloplasmin (non-Cp Cu, also known in the literature as "free" copper). The calculated non-Cp Cu (Walshe's) index has many limitations. METHODS: A direct fluorescent method for non-Cp Cu detection has been developed and data are presented herein...
January 11, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28057442/iron-importers-zip8-and-zip14-are-expressed-in-retina-and-regulated-by-retinal-iron-levels
#2
Jacob Sterling, Samyuktha Guttha, Ying Song, Delu Song, Majda Hadziahmetovic, Joshua L Dunaief
Intracellular retinal iron accumulation has been implicated in the pathogenesis of age-related macular degeneration (AMD), the leading cause of irreversible blindness among individuals over the age of 50. Ceruloplasmin/hephaestin double knockout mice (Cp/Heph DKO) and hepcidin knockout mice (Hepc KO) accumulate retinal iron and model some features of AMD. Two canonical pathways govern cellular iron import - transferrin-bound iron import and non-transferrin bound iron import. In Cp/Heph DKO and Hepc KO iron-loaded retinas, transferrin-bound iron import is downregulated...
January 2, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28031261/copper-is-a-host-effector-mobilized-to-urine-during-urinary-tract-infection-to-impair-bacterial-colonization
#3
Amanda N Hyre, Kylie Kavanagh, Nancy D Kock, George L Donati, Sargurunathan Subashchandrabose
Urinary tract infection (UTI) is a major global infectious disease affecting millions of people annually. Human urinary copper (Cu) content is elevated during UTI caused by uropathogenic E. coli (UPEC). UPEC upregulate the expression of Cu efflux genes during clinical UTI in patients as an adaptive response to host-derived Cu. Whether Cu is mobilized to urine as a host response to UTI and its role in protection against UTI remain unresolved. To address these questions, we tested the hypothesis that Cu is a host effector mobilized to urine during UTI to limit bacterial growth...
December 28, 2016: Infection and Immunity
https://www.readbyqxmd.com/read/28029772/oxidation-of-iron-under-physiologically-relevant-conditions-in-biological-fluids-from-healthy-and-alzheimer-s-disease-subjects
#4
Linh Q Lam, Bruce X Wong, Tony Frugier, Qiao-Xin Li, Steven J Collins, Ashley I Bush, Peter J Crack, James A Duce
Ferroxidase activity has been reported to be altered in various biological fluids in neurodegenerative disease, but the sources contributing to the altered activity are uncertain. Here we assay fractions of serum and cerebrospinal fluid with a newly validated triplex ferroxidase assay. Our data indicate that while ceruloplasmin, a multicopper ferroxidase, is the predominant source of serum activity, activity in CSF predominantly derives from a <10 kDa component, specifically from polyanions such as citrate and phosphate...
January 3, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28008247/new-silver-nanoparticles-induce-apoptosis-like-process-in-e-coli-and-interfere-with-mammalian-copper-metabolism
#5
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/27991585/hephaestin-and-ceruloplasmin-facilitate-iron-metabolism-in-the-mouse-kidney
#6
Bo Jiang, Guohao Liu, Jiashuo Zheng, Mengxia Chen, Zaitunamu Maimaitiming, Min Chen, Shunli Liu, Ruiwei Jiang, Brie K Fuqua, Joshua L Dunaief, Chris D Vulpe, Gregory J Anderson, Hongwei Wang, Huijun Chen
Multicopper ferroxidases (MCFs) play an important role in cellular iron homeostasis. However, the role of MCFs in renal metabolism remains unclear. We used Hephaestin (Heph) and Ceruloplasmin (Cp) single or double (Heph/Cp) knockout (KO) mice to study the roles of MCFs in the kidney. Renal iron levels and the expression of iron metabolism genes were examined. The non-heme iron content both in the renal cortex and medulla of Heph/Cp KO mice was significantly increased. Perls' Prussian blue staining showed iron accumulation on the apical side of renal tubular cells in Heph/Cp KO mice...
December 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27983558/diabetes-and-alzheimer-s-disease-can-elevated-free-copper-predict-the-risk-of-the-disease
#7
Rosanna Squitti, Armando J Mendez, Ilaria Simonelli, Camillo Ricordi
BACKGROUND: Defective copper regulation, primarily referred to as chelatable redox active Cu(II), has been involved in the etiology of diabetes, and Alzheimer's disease (AD). OBJECTIVES: However, no study has determined levels of labile copper non-bound to ceruloplasmin (non-Cp Cu, also known as 'free' copper) in the blood of subjects with diabetes compared with that of AD patients. METHODS: To this aim, values of non-Cp Cu were measured in 25 Type 1 (T1D) and 31 Type 2 (T2D) subjects and in28 healthy controls, along with measurements of C-reactive protein, glycated hemoglobin A1c, cholesterol, and triglycerides...
December 16, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27982432/spectrum-of-atp7b-mutations-and-genotype-phenotype-correlation-in-a-large-scale-chinese-patients-with-wilson-disease
#8
Nan Cheng, Huagui Wang, Weili Wu, Renmin Yang, Licheng Liu, Yongzhu Han, Liping Guo, Jiyuan Hu, Lizhi Xu, Jinyin Zhao, Yongsheng Han, Qi Liu, Kai Li, Xun Wang, Weijun Chen
Wilson disease, an inherited disorder associated with ATP7B gene, has a wide spectrum of genotypes and phenotypes. In this study, we developed a rapid multiplex PCR MassArray method for detecting 110 mutant alleles of interest, and used it to examine genomic DNA from 1222 patients and 110 healthy controls. In patients not found to have any mutation in the 110 selected alleles, PCR-Sanger sequencing was used to examine the ATP7B gene. We identified 88 mutations, including nine novel mutations. Our analyses revealed p...
December 15, 2016: Clinical Genetics
https://www.readbyqxmd.com/read/27941192/clinical-presentations-of-wilson-disease-among-polish-children
#9
Magdalena Naorniakowska, Maciej Dądalski, Diana Kamińska, Wojciech Jańczyk, Dariusz Lebensztejn, Krzysztof Fyderek, Jacek Wysocki, Piotr Socha
INTRODUCTION: Wilson disease (WD) may present from early childhood up to the eighth decade, presenting with variable hepatic and neuropsychiatric symptoms. Establishing the diagnosis is straightforward if the major clinical and laboratory features are present. However, clinical phenotypes are highly varied and early, proper diagnosis can be challenging. AIM: The aim of our study was to analyze clinical presentations and diagnostic tests of Polish pediatric patients with WD...
2016: Developmental Period Medicine
https://www.readbyqxmd.com/read/27935710/quantification-of-atp7b-protein-in-dried-blood-spots-by-peptide-immuno-srm-as-a-potential-screen-for-wilson-s-disease
#10
Sunhee Jung, Jeffrey R Whiteaker, Lei Zhao, Han-Wook Yoo, Amanda G Paulovich, Si Houn Hahn
Wilson's Disease (WD), a copper transport disorder caused by a genetic defect in the ATP7B gene, has been a long time strong candidate for newborn screening (NBS), since early interventions can give better results by preventing irreversible neurological disability or liver cirrhosis. Several previous pilot studies measuring ceruloplasmin (CP) in infants or children showed that this marker alone was insufficient to meet the universal screening for WD. WD results from mutations that cause absent or markedly diminished levels of ATP7B...
December 9, 2016: Journal of Proteome Research
https://www.readbyqxmd.com/read/27930978/mechanism-of-action-and-effect-of-immune-modulating-agents-in-the-treatment-of-psoriasis
#11
Rehab M El-Gharabawy, Amira S Ahmed, Amal H Al-Najjar
OBJECTIVES: The aim of this work is to study the possible mechanisms through which different immune-modulating agents can produce their beneficial effects on treatment of psoriasis and to determine whether the supplementation of these agents for psoriasis patients induces regression of psoriasis. SUBJECTS AND METHODS: One hundred fifty participants were included in this study. The participants were divided into five groups: 1. Normal control group, 2. Psoriasis patients not taking any treatment, 3...
January 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27930511/four-year-follow-up-of-a-wilson-disease-pedigree-complicated-with-epilepsy-and-hypopituitarism-case-report-with-a-literature-review
#12
Qi-Jie Zhang, Liu-Qing Xu, Chong Wang, Wei Hu, Ning Wang, Wan-Jin Chen
RATIONALE: Wilson's disease (WD) is an autosomal recessive inherited disorder of copper metabolism with excellent prognosis if treated timely. However, WD is usually prone to neglect and misdiagnosis at an early stage. We reported a rare WD pedigree, and the clinical features, laboratory tests, and gene mutations were analyzed in detail. PATIENT CONCERNS: The patient was a 17-year-old and 136-cm-tall girl who presented with limb weakness, combined with multi-organ disorders including blind eye, epilepsy, and hypopituitarism...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27920479/ceruloplasmin-a-reliable-marker-of-fibrosis-in-chronic-hepatitis-b-virus-patients-with-normal-or-minimally-raised-alanine-aminotransferase
#13
Da-Wu Zeng, Jing Dong, Jia-Ji Jiang, Yue-Yong Zhu, Yu-Rui Liu
AIM: To develop a non-invasive model to evaluate significant fibrosis and cirrhosis by investigating the association between serum ceruloplasmin (CP) levels and liver fibrosis in chronic hepatitis B (CHB) patients with normal or minimally raised alanine aminotransferase (ALT). METHODS: Serum samples and liver biopsy were obtained from 193 CHB patients with minimally raised or normal ALT who were randomly divided into a training group (n = 97) and a validation group (n = 96)...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27909964/oxidative-stress-and-biochemical-markers-of-endothelial-dysfunction-and-organ-damage-under-conditions-of-experimental-nonferrous-metal-intoxication
#14
F S Dzugkoeva, I V Mozhaeva, S G Dzugkoev, O I Margieva, A I Tedtoeva, M A Otiev
Chronic nickel intoxication caused by parenteral nickel chloride administration (0.5 mg/kg of body weight) to Wistar rats led to ROS generation inducing LPO in erythrocyte membranes and homogenates of renal, liver, and myocardial tissue. Superoxide dismutase (SOD) activity was inhibited, while catalase activity and ceruloplasmin concentration increased. LPO and its products disrupted nitric oxide production and reduced its bioavailability, which led to the development of endothelial dysfunction and impaired microcirculatory hemodynamics...
December 2016: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27908399/serum-copper-concentrations-in-hospitalized-newborns
#15
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/27903408/correlations-between-ceruloplasmin-lactoferrin-and-myeloperoxidase-in-meconium
#16
Ewa Skarżyńska, Joanna Żytyńska-Daniluk, Barbara Lisowska-Myjak
BACKGROUND AND AIMS: Oxidative stress and the generation of reactive oxygen/nitrogen species has a known significant impact on intrauterine fetal growth and the risk of metabolic diseases in adulthood. Compounds accumulated in fetal meconium may be a source of information about the oxidoreductive status during the intrauterine development. Three metal-containing proteins ceruloplasmin (CP), lactoferrin (LF) and myeloperoxidase (MPO) constitute the complementary panel modulating oxidative stress...
November 23, 2016: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27892863/nutrigenomic-activity-of-plant-derived-compounds-in-health-and-disease-results-of-a-dietary-intervention-study-in-dog
#17
Sandy Sgorlon, Bruno Stefanon, Misa Sandri, Monica Colitti
The study was conducted to investigate the effects of dietary administrations of four nutraceuticals in dogs. Seventy four dogs were enrolled in the trials, 24 healthy dogs were fed with a control diet (CT) and the experimental groups received for 60days the same diet supplemented with nutraceuticals, namely Echinacea angustifolia (EA, 0.10mg/kg live weight as echinacoside; 14 dogs), Vaccinium myrtillus (VM, 0.20mg/kg live weight as anthocyanidin, 13 dogs), Curcuma longa (CL, 6.60mg/kg live weight as curcumin, 18 dogs with arthrosis), and Sylibum marianum (SM, 1...
December 2016: Research in Veterinary Science
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
#18
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/27869428/-hemolytic-anemia-as-the-first-clinical-presentation-of-wilson-disease-a-pediatric-case
#19
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/27862254/hk2-proximal-tubule-epithelial-cells-synthesize-and-secrete-plasma-proteins-predominantly-through-the-apical-surface
#20
Ke-Wei Zhao, Elsa J Brochmann Murray, Samuel S Murray
Renal proximal tubule epithelial cells (PTECs) are known to reabsorb salts and small plasma proteins filtered through Bowman's capsule. Following acute kidney injury, PTECs assume some characteristics of hepatocytes in producing various plasma proteins. We now demonstrate that even at a resting state, a PTEC cell line, HK2 expresses mRNAs for and synthesizes and secretes plasma proteins in a complex with complement C3, an α2 -macroglobulin family chaperone, including albumin, transferrin, α1 -antitrypsin, α1 -antichymotrypsin, α2 -HS-glycoprotein, ceruloplasmin, haptoglobin, C1-inhibitor, secreted phosphoprotein-24, and insulin-like growth factor-1...
November 9, 2016: Journal of Cellular Biochemistry
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