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Transferrin

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https://www.readbyqxmd.com/read/29149510/transferrin-as-a-predictor-of-survival-in-cirrhosis
#1
André Viveiros, Armin Finkenstedt, Benedikt Schaefer, Mattias Mandorfer, Bernhard Scheiner, Konrad Lehner, Moritz Tobiasch, Thomas Reiberger, Herbert Tilg, Michael Edlinger, Heinz Zoller
BACKGROUND AND AIMS: Patients with cirrhosis frequently present with high serum ferritin and low transferrin concentrations, reflecting impaired liver function and inflammation. Recent studies have shown that transferrin and its saturation with iron are MELD-independent predictors of mortality in patients with acute on chronic liver failure or decompensated cirrhosis. The aim of this study was to evaluate the prognostic utility of serum iron parameters in relation to markers of liver function and immune activation...
November 17, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/29149437/a-blinded-randomized-placebo-controlled-study-to-investigate-the-efficacy-and-safety-of-ferric-carboxymaltose-in-iron-deficient-patients-with-fibromyalgia
#2
Chad S Boomershine, Todd A Koch, David Morris
INTRODUCTION: This study sought to compare efficacy and safety of ferric carboxymaltose vs. placebo in iron-deficient patients with fibromyalgia. METHODS: This blinded, placebo-controlled, phase 2 study randomized adults with fibromyalgia and Revised Fibromyalgia Impact Questionnaire (FIQR) scores ≥ 60, ferritin levels < 0.05 µg/ml, and transferrin saturation < 20% (1:1) to receive ferric carboxymaltose [15 mg/kg (up to 750 mg)], or placebo (15 cc normal saline) intravenously on study days 0 and 5...
November 17, 2017: Rheumatology and Therapy
https://www.readbyqxmd.com/read/29147843/iron-and-infection
#3
REVIEW
Tomas Ganz
Iron is an essential trace metal for nearly all infectious microorganisms, and host defense mechanisms target this dependence to deprive microbes of iron. This review highlights mechanisms that are activated during infections to restrict iron on mucosal surfaces, in plasma and extracellular fluid, and within macrophages. Iron overload disorders, such as hereditary hemochromatosis or β-thalassemia, interfere with iron-restrictive host responses, and thereby cause increased susceptibility to infections with microbes that can exploit this vulnerability...
November 16, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/29145927/corrigendum-to-hypoxia-limits-mouse-follicle-growth-in-vitro
#4
J M Connolly, M T Kane, L R Quinlan, P Dockery, A C Hynes
Ovarian follicle culture is useful for elucidation of factors involved in the regulation of follicular function. We examined the effects of gas phase oxygen concentration, an oil overlay, serum type and medium supplementation with FSH, insulin-transferrin-selenium (ITS) and I-ascorbic acid on cultured preantral mouse follicle growth in a spherical, non-attached follicle culture system. Follicle growth in 5% oxygen was significantly (P<0.01) inferior to growth in 20% oxygen in terms of follicle diameter. This was likely due to hypoxia, as evidenced by significantly (P<0...
February 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29145899/-diagnosis-of-haemochromatosis
#5
L IJsselstijn, A A van Houten, F Weerkamp
Interpretation of laboratory parameters in cases of haemochromatosis can be difficult. Here, we describe two patients with markedly elevated transferrin saturation and high ferritin levels. The first patient is a 51-year-old woman who had been complaining of fatigue, abdominal pain and arthritis for three years. Her liver enzymes were mildly elevated. Secondary causes of iron overload had been excluded. DNA investigation found a homozygous p.Cys282Tyr mutation in the HFE protein, consistent with hereditary haemochromatosis...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29140158/endosomal-trafficking-regulates-receptor-mediated-transcytosis-of-antibodies-across-the-blood-brain-barrier
#6
Arsalan S Haqqani, Christie E Delaney, Eric Brunette, Ewa Baumann, Graham K Farrington, William Sisk, John Eldredge, Wen Ding, Tammy-Lynn Tremblay, Danica B Stanimirovic
Current methods for examining antibody trafficking are either non-quantitative such as immunocytochemistry or require antibody labeling with tracers. We have developed a multiplexed quantitative method for antibody 'tracking' in endosomal compartments of brain endothelial cells. Rat brain endothelial cells were co-incubated with blood-brain barrier (BBB)-crossing FC5, monovalent FC5Fc or bivalent FC5Fc fusion antibodies and control antibodies. Endosomes were separated using sucrose-density gradient ultracentrifugation and analyzed using multiplexed mass spectrometry to simultaneously quantify endosomal markers, receptor-mediated transcytosis (RMT) receptors and the co-incubated antibodies in each fraction...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29138201/effect-of-iron-and-zinc-biofortified-pearl-millet-consumption-on-growth-and-immune-competence-in-children-aged-12-18-months-in-india-study-protocol-for-a-randomised-controlled-trial
#7
Saurabh Mehta, Julia L Finkelstein, Sudha Venkatramanan, Samantha L Huey, Shobha A Udipi, Padmini Ghugre, Caleb Ruth, Richard L Canfield, Anura V Kurpad, Ramesh D Potdar, Jere D Haas
INTRODUCTION: Biofortified crops represent a sustainable agricultural solution for the widespread micronutrient malnutrition in India and other resource-limited settings. This study aims to investigate the effect of the consumption of foods prepared with iron- and zinc-biofortified pearl millet (FeZn-PM) by children on biomarkers of iron and zinc status, growth, and immune function. METHODS AND ANALYSIS: We will conduct a randomised controlled feeding trial in identified slums of Mumbai, India among 200 children aged between 12 and 18 months...
November 14, 2017: BMJ Open
https://www.readbyqxmd.com/read/29135969/hla-b27-correlates-with-the-intracellular-elimination-replication-and-trafficking-of-salmonella-enteritidis-collected-from-reactive-arthritis-patients
#8
Yi Zhao, Honghu Tang, Chunyu Tan, Hua Zhao, Yi Liu
BACKGROUND The aim of this study was to explore the correlation between HLA-B27 and the intracellular elimination, replication, and trafficking of Salmonella enteritidis (S. enteritidis) collected from patients with reactive arthritis. MATERIAL AND METHODS Confocal microscopy, flow cytometry, and sandwich enzyme-linked immunosorbent assay (ELISA) were employed in this study to evaluate the localization of proteins of interest, to assess the intracellular trafficking of S. enteritidis, and to measure the production of cytokines of interest...
November 14, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29135935/tucum-do-cerrado-bactris-setosa-mart-may-promote-anti-aging-effect-by-upregulating-sirt1-nrf2-pathway-and-attenuating-oxidative-stress-and-inflammation
#9
Marcela de Sá Barreto da Cunha, Sandra Fernandes Arruda
Aging may be related to oxidative damage accumulation and a low-grade inflammation, both responses are modulated by iron and phytochemicals. This study investigated the effect of tucum-do-cerrado (Bactris setosa Mart.) consumption on the expression of sirtuins (SIRT 1 and 3) and senescence marker protein-30 (SMP30), and on the redox and inflammatory responses, in adult rats supplemented or not with dietary iron. Male Wistar rats were treated for 12 weeks with: control diet (CT); iron enriched-diet (+Fe); control diet + 15% tucum-do-cerrado (Tuc); or iron enriched-diet + 15% tucum-do-cerrado (Tuc + Fe)...
November 14, 2017: Nutrients
https://www.readbyqxmd.com/read/29135121/hepcidin-and-iron-metabolism-in-the-pathogenesis-of-prostate-cancer
#10
Feng Wang, An Liu, Ruyu Bai, Binbin Zhang, Yongsheng Jin, Wei Guo, Yi Li, Jixue Gao, Longqiang Liu
PURPOSE: To investigate the relationship between Hepcidin and iron metabolism, and cell proliferation, migration, and apoptosis in prostate cancer cells. METHODS: PC3 prostate cancer cells were cultured in vitro and divided into the control group, Hepcidin overexpression group, and Hepcidin low expression group. Prostate specific antigen (PSA) and soluble transferrin receptor (sTfR) levels were measured by ELISA. The levels of the Hepcidin receptor membrane transporter, Ferroportin, were determined by Western blot...
September 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29134618/the-mechanisms-of-systemic-iron-homeostasis-and-etiology-diagnosis-and-treatment-of-hereditary-hemochromatosis
#11
REVIEW
Hiroshi Kawabata
Hereditary hemochromatosis (HH) is a group of genetic iron overload disorders that manifest with various symptoms, including hepatic dysfunction, diabetes, and cardiomyopathy. Classic HH type 1, which is common in Caucasians, is caused by bi-allelic mutations of HFE. Severe types of HH are caused by either bi-allelic mutations of HFE2 that encodes hemojuvelin (type 2A) or HAMP that encodes hepcidin (type 2B). HH type 3, which is of intermediate severity, is caused by bi-allelic mutations of TFR2 that encodes transferrin receptor 2...
November 13, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/29134616/zonulin-inflammation-and-iron-status-in-patients-with-early-stages-of-chronic-kidney-disease
#12
Ewelina Lukaszyk, Mateusz Lukaszyk, Ewa Koc-Zorawska, Anna Bodzenta-Lukaszyk, Jolanta Malyszko
BACKGROUND/AIMS: Zonulin is the only known regulator of intestinal permeability. It is also considered as a potential inflammatory marker in several conditions such as diabetes and inflammatory bowel syndrome. The aim of the study was to investigate zonulin levels in patients with early stages of CKD and its possible correlation with inflammation, anemia and iron status parameters. METHODS: Eighty-eight patients with early stages of CKD and 23 healthy volunteers were enrolled in the study...
November 13, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/29126485/a-highly-sensitive-fluorescent-turn-on-biosensor-for-glycoproteins-based-on-boronic-acid-functional-polymer-capped-mn-doped-zns-quantum-dots
#13
Lifang Chang, Haocheng Wu, Xiwen He, Langxing Chen, Yukui Zhang
A simple fluorescence turn-on sensor has been designed for the highly sensitive detection of glycoproteins on the basis of boronic acid functional polymer capped Mn-doped ZnS quantum dots (QDs@MPS@AAPBA). In the absence of glycoproteins, the fluorescence emission intensity of the QDs@MPS@AAPBA was relatively weaker due to the effective electronic transfer from the QDs to the boron moieties on its surface. While the glycoproteins were introduced into the system, an obvious fluorescence enhancement was observed...
December 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29126480/photometric-flow-analysis-system-for-biomedical-investigations-of-iron-transferrin-speciation-in-human-serum
#14
Kamil Strzelak, Natalia Rybkowska, Agnieszka Wiśniewska, Robert Koncki
The Multicommutated Flow Analysis (MCFA) system for the estimation of clinical iron parameters: Serum Iron (SI), Unsaturated Iron Binding Capacity (UIBC) and Total Iron Binding Capacity (TIBC) has been proposed. The developed MCFA system based on simple photometric detection of iron with chromogenic agent (ferrozine) enables a speciation of transferrin (determination of free and Fe-bound protein) in human serum. The construction of manifold was adapted to the requirements of measurements under changing conditions...
December 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29126087/label-free-based-quantitative-proteomic-analysis-identifies-proteins-involved-in-the-testis-maturation-of-bactrocera-dorsalis-hendel
#15
Dong Wei, Meng-Yi Zhang, Pei-Ming Gu, Guy Smagghe, Jin-Jun Wang
Complex structural and biochemical processes take place in insect testis maturation, but the mechanisms by which functional proteins induce and regulate male fertility are unknown. Proteomics has been widely used to identify functional proteins involved in such complex physiological processes. In this study, we performed a label-free based quantitative proteomic analysis of developing testis of Bactrocera dorsalis with the aim of shedding light on spermatogenesis, sperm formation and also tissue development...
October 18, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/29126055/estrogen-responsive-gene-networks-in-the-teleost-liver-what-are-the-key-molecular-indicators
#16
April Feswick, Kelly R Munkittrick, Christopher J Martyniuk
An overarching goal of environmental genomics is to leverage sensitive suites of markers that are robust and reliable to assess biological responses in a range of species inhabiting variable environments. The objective of this study was to identify core groups of transcripts and molecular signaling pathways that respond to 17alpha-ethylinestadiol (EE2), a ubiquitous estrogenic contaminant, using transcriptome datasets generated from six independent laboratories. We sought to determine which biomarkers and gene networks were those most robust and reliably detected in multiple laboratories...
October 31, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29123391/surface-enhanced-raman-scattering-investigation-of-targeted-delivery-and-controlled-release-of-gemcitabine
#17
Ty Santiago, Rebecca Sinnott DeVaux, Katarzyna Kurzatkowska, Ricardo Espinal, Jason I Herschkowitz, Maria Hepel
Advanced and metastatic cancer forms are extremely difficult to treat and require high doses of chemotherapeutics, inadvertently affecting also healthy cells. As a result, the observed survival rates are very low. For instance, gemcitabine (GEM), one of the most effective chemotherapeutic drugs used for the treatment of breast and pancreatic cancers, sees only a 20% efficacy in penetrating cancer tissue, resulting in <5% survival rate in pancreatic cancer. Here, we present a method for delivering the drug that offers mitigation of side effects, as well as a targeted delivery and controlled release of the drug, improving its overall efficacy...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29122992/labile-plasma-iron-levels-predict-survival-in-patients-with-lower-risk-myelodysplastic-syndromes
#18
Louise de Swart, Chloé Reiniers, Timothy Bagguley, Corine van Marrewijk, David Bowen, Eva Hellström-Lindberg, Aurelia Tatic, Argiris Symeonidis, Gerwin Huls, Jaroslav Cermak, Arjan A van de Loosdrecht, Hege Garelius, Dominic Culligan, Mac Macheta, Michail Spanoudakis, Panagiotis Panagiotidis, Marta Krejci, Nicole Blijlevens, Saskia Langemeijer, Jacqueline Droste, Dorine W Swinkels, Alexandra Smith, Theo de Witte
Red blood cell transfusions remain one of the cornerstones in supportive care of lower-risk patients with myelodysplastic syndromes. We hypothesized that patients develop oxidant mediated tissue injury through the formation of toxic iron species, caused either by red blood cell transfusions or by ineffective erythropoiesis. We analyzed serum samples from 100 lower-risk patients with myelodysplastic syndromes at six-month intervals for transferrin saturation, hepcidin-25, growth differentiation factor 15, soluble transferrin receptor, non-transferrin bound iron and labile plasma iron in order to evaluate temporal changes in iron metabolism and presence of potentially toxic iron species and their impact on survival...
November 9, 2017: Haematologica
https://www.readbyqxmd.com/read/29121448/malaria-exacerbates-inflammation-associated-elevation-in-ferritin-and-soluble-transferrin-receptor-with-only-modest-effects-on-iron-deficiency-and-iron-deficiency-anemia-among-rural-zambian-children
#19
Maxwell A Barffour, Kerry J Schulze, Christian L Coles, Justin Chileshe, Ng'andwe Kalungwana, Ward Siamusantu, Margia Arguello, William J Moss, Keith P West, Amanda C Palmer
OBJECTIVE: In 4-8-year-old Zambian children (n=744), we evaluated the effects of adjusting for inflammation (α1-acid glycoprotein > 1 g/L), with or without additional adjustment for malaria, on prevalence estimates of iron deficiency (ID) and iron deficiency anemia (IDA) during low malaria (LowM) and high malaria (HighM) transmission seasons. METHODS: To estimate adjustment factors, children were classified as: a) reference (malaria negative without inflammation), b) inflammation without malaria (I), c) malaria without inflammation (M), and d) inflammation with malaria (IM)...
November 9, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/29120745/nrp2-and-cd63-are-host-factors-for-lujo-virus-cell-entry
#20
Matthijs Raaben, Lucas T Jae, Andrew S Herbert, Ana I Kuehne, Sarah H Stubbs, Yi-Ying Chou, Vincent A Blomen, Tomas Kirchhausen, John M Dye, Thijn R Brummelkamp, Sean P Whelan
Arenaviruses cause fatal hemorrhagic disease in humans. Old World arenavirus glycoproteins (GPs) mainly engage α-dystroglycan as a cell-surface receptor, while New World arenaviruses hijack transferrin receptor. However, the Lujo virus (LUJV) GP does not cluster with New or Old World arenaviruses. Using a recombinant vesicular stomatitis virus containing LUJV GP as its sole attachment and fusion protein (VSV-LUJV), we demonstrate that infection is independent of known arenavirus receptor genes. A genome-wide haploid genetic screen identified the transmembrane protein neuropilin 2 (NRP2) and tetraspanin CD63 as factors for LUJV GP-mediated infection...
November 8, 2017: Cell Host & Microbe
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