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Xinxin Song, Yangchun Xie, Rui Kang, Wen Hou, Xiaofang Sun, Michael W Epperly, Joel S Greenberger, Daolin Tang
Bone marrow injury remains a serious concern in traditional cancer treatment. Ferroptosis is an iron- and oxidative-dependent form of regulated cell death that has become part of an emerging strategy for chemotherapy. However, the key regulator of ferroptosis in bone marrow injury remains unknown. Here, we show that Fanconi anemia complementation group D2 (FANCD2), a nuclear protein involved in DNA damage repair, protects against ferroptosis-mediated injury in bone marrow stromal cells (BMSCs). The classical ferroptosis inducer erastin remarkably increased the levels of monoubiquitinated FANCD2, which in turn limited DNA damage in BMSCs...
October 20, 2016: Biochemical and Biophysical Research Communications
Emily S Starn, Holly Hampe, Thomas Cline
Health care facility-acquired Clostridium difficile infections (HCFA-CDI) have increased over the last several decades despite facilities developing protocols for prescribing probiotics with antibiotics to prevent HCFA-CDI. The literature does not consistently support this. A retrospective medical record review evaluated the care effectiveness of this practice. Care effectiveness was not found; patients receiving probiotics with antibiotics were twice as likely to develop HCFA-CDI (P = .004). Except with glycopeptides, patients were 1...
October 2016: Quality Management in Health Care
Monika Kasztura, Magdalena Dzięgała, Kamil Kobak, Jacek Bania, Grzegorz Mazur, Waldemar Banasiak, Piotr Ponikowski, Ewa Anita Jankowska
: Background Iron is presumed to play an important role in functioning of cardiomyocytes and skeletal myocytes. There is scarcity of direct data characterizing the cells functioning when exposed to iron depletion or iron overload in cellular environment. There is some clinical evidence demonstrating that iron deficiency has serious negative prognostic consequence in heart failure (HF) patients and its correction brought clinical benefit. BACKGROUND: Iron is presumed to play an important role in functioning of cardiomyocytes and skeletal myocytes...
October 17, 2016: Kardiologia Polska
A Stallmach, C Langbein, R Atreya, T Bruns, A Dignass, K Ende, J Hampe, F Hartmann, M F Neurath, J Maul, J C Preiss, R Schmelz, B Siegmund, H Schulze, N Teich, U von Arnim, D C Baumgart, C Schmidt
BACKGROUND: Vedolizumab, a monoclonal antibody targeting the α4β7-integrin, is effective in inducing and maintaining clinical remission in Crohn's disease and ulcerative colitis according to randomised clinical trials. AIM: To determine the long-term effectiveness of vedolizumab in a real-world clinical setting. METHODS: This observational registry assessed the clinical outcome in patients treated with vedolizumab for clinically active Crohn's disease (n = 67) or ulcerative colitis (n = 60)...
October 7, 2016: Alimentary Pharmacology & Therapeutics
Jérôme R D Soiné, Nils Hersch, Georg Dreissen, Nico Hampe, Bernd Hoffmann, Rudolf Merkel, Ulrich S Schwarz
Animal cells use traction forces to sense the mechanics and geometry of their environment. Measuring these traction forces requires a workflow combining cell experiments, image processing and force reconstruction based on elasticity theory. Such procedures have already been established mainly for planar substrates, in which case one can use the Green's function formalism. Here we introduce a workflow to measure traction forces of cardiac myofibroblasts on non-planar elastic substrates. Soft elastic substrates with a wave-like topology were micromoulded from polydimethylsiloxane and fluorescent marker beads were distributed homogeneously in the substrate...
October 6, 2016: Interface Focus
J Yang, T Xu, X Yuan, D R Gomez, Y Song, R U Komaki, Z Liao
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
Sebastian Rasch, Veit Phillip, Stephanie Reichel, Bettina Rau, Christian Zapf, Jonas Rosendahl, Ulrich Halm, Markus Zachäus, Martin Müller, Alexander Kleger, Albrecht Neesse, Jochen Hampe, Mark Ellrichmann, Felix Rückert, Peter Strauß, Alexander Arlt, Volker Ellenrieder, Thomas M Gress, Werner Hartwig, Ernst Klar, Joachim Mössner, Stefan Post, Roland M Schmid, Thomas Seufferlein, Marco Siech, Jens Werner, Uwe Will, Hana Algül
BACKGROUND: Necrotising pancreatitis, and particularly infected necrosis, are still associated with high morbidity and mortality. Since 2011, a step-up approach with lower morbidity rates compared to initial open necrosectomy has been established. However, mortality and complication rates of this complex treatment are hardly studied thereafter. METHODS: The German Pancreatitis Study Group performed a multicenter, retrospective study including 220 patients with necrotising pancreatitis requiring intervention, treated at 10 hospitals in Germany between January 2008 and June 2014...
2016: PloS One
Kosha Mehta, Mark Busbridge, Derek Renshaw, Robert W Evans, Sebastien Farnaud, Vinood B Patel
Hepcidin is the key regulator of systemic iron homeostasis. The iron-sensing mechanisms and the role of intracellular iron in modulating hepatic hepcidin secretion are unclear. Therefore, we created a novel cell line, recombinant-TfR1 HepG2, expressing iron-response-element-independent TFRC mRNA to promote cellular iron-overload and examined the effect of excess holotransferrin (5g/L) on cell-surface TfR1, iron content, hepcidin secretion and mRNA expressions of TFRC, HAMP, SLC40A1, HFE and TFR2. Results showed that the recombinant cells exceeded levels of cell-surface TfR1 in wild-type cells under basal (2...
October 2016: Blood Cells, Molecules & Diseases
Ricardo Faria, Bruno Silva, Catarina Silva, Pedro Loureiro, Ana Queiroz, Sofia Fraga, Jorge Esteves, Diana Mendes, Rita Fleming, Luís Vieira, João Gonçalves, Paula Faustino
Hereditary hemochromatosis (HH) is an autosomal recessive disorder characterized by excessive iron absorption resulting in pathologically increased body iron stores. It is typically associated with common HFE gene mutation (p.Cys282Tyr and p.His63Asp). However, in Southern European populations up to one third of HH patients do not carry the risk genotypes. This study aimed to explore the use of next-generation sequencing (NGS) technology to analyse a panel of iron metabolism-related genes (HFE, TFR2, HJV, HAMP, SLC40A1, and FTL) in 87 non-classic HH Portuguese patients...
October 2016: Blood Cells, Molecules & Diseases
Kin Weng Kong, Azlina Abdul Aziz, Nurhanani Razali, Norhaniza Aminuddin, Sarni Mat Junit
BACKGROUND: Barringtonia racemosa is a medicinal plant belonging to the Lecythidaceae family. The water extract of B. racemosa leaf (BLE) has been shown to be rich in polyphenols. Despite the diverse medicinal properties of B. racemosa, information on its major biological effects and the underlying molecular mechanisms are still lacking. METHODS: In this study, the effect of the antioxidant-rich BLE on gene expression in HepG2 cells was investigated using microarray analysis in order to shed more light on the molecular mechanism associated with the medicinal properties of the plant...
2016: PeerJ
Yuxiang Jiang, Tal Ronnen Oron, Wyatt T Clark, Asma R Bankapur, Daniel D'Andrea, Rosalba Lepore, Christopher S Funk, Indika Kahanda, Karin M Verspoor, Asa Ben-Hur, Da Chen Emily Koo, Duncan Penfold-Brown, Dennis Shasha, Noah Youngs, Richard Bonneau, Alexandra Lin, Sayed M E Sahraeian, Pier Luigi Martelli, Giuseppe Profiti, Rita Casadio, Renzhi Cao, Zhaolong Zhong, Jianlin Cheng, Adrian Altenhoff, Nives Skunca, Christophe Dessimoz, Tunca Dogan, Kai Hakala, Suwisa Kaewphan, Farrokh Mehryary, Tapio Salakoski, Filip Ginter, Hai Fang, Ben Smithers, Matt Oates, Julian Gough, Petri Törönen, Patrik Koskinen, Liisa Holm, Ching-Tai Chen, Wen-Lian Hsu, Kevin Bryson, Domenico Cozzetto, Federico Minneci, David T Jones, Samuel Chapman, Dukka Bkc, Ishita K Khan, Daisuke Kihara, Dan Ofer, Nadav Rappoport, Amos Stern, Elena Cibrian-Uhalte, Paul Denny, Rebecca E Foulger, Reija Hieta, Duncan Legge, Ruth C Lovering, Michele Magrane, Anna N Melidoni, Prudence Mutowo-Meullenet, Klemens Pichler, Aleksandra Shypitsyna, Biao Li, Pooya Zakeri, Sarah ElShal, Léon-Charles Tranchevent, Sayoni Das, Natalie L Dawson, David Lee, Jonathan G Lees, Ian Sillitoe, Prajwal Bhat, Tamás Nepusz, Alfonso E Romero, Rajkumar Sasidharan, Haixuan Yang, Alberto Paccanaro, Jesse Gillis, Adriana E Sedeño-Cortés, Paul Pavlidis, Shou Feng, Juan M Cejuela, Tatyana Goldberg, Tobias Hamp, Lothar Richter, Asaf Salamov, Toni Gabaldon, Marina Marcet-Houben, Fran Supek, Qingtian Gong, Wei Ning, Yuanpeng Zhou, Weidong Tian, Marco Falda, Paolo Fontana, Enrico Lavezzo, Stefano Toppo, Carlo Ferrari, Manuel Giollo, Damiano Piovesan, Silvio C E Tosatto, Angela Del Pozo, José M Fernández, Paolo Maietta, Alfonso Valencia, Michael L Tress, Alfredo Benso, Stefano Di Carlo, Gianfranco Politano, Alessandro Savino, Hafeez Ur Rehman, Matteo Re, Marco Mesiti, Giorgio Valentini, Joachim W Bargsten, Aalt D J van Dijk, Branislava Gemovic, Sanja Glisic, Vladmir Perovic, Veljko Veljkovic, Nevena Veljkovic, Danillo C Almeida-E-Silva, Ricardo Z N Vencio, Malvika Sharan, Jörg Vogel, Lakesh Kansakar, Shanshan Zhang, Slobodan Vucetic, Zheng Wang, Michael J E Sternberg, Mark N Wass, Rachael P Huntley, Maria J Martin, Claire O'Donovan, Peter N Robinson, Yves Moreau, Anna Tramontano, Patricia C Babbitt, Steven E Brenner, Michal Linial, Christine A Orengo, Burkhard Rost, Casey S Greene, Sean D Mooney, Iddo Friedberg, Predrag Radivojac
BACKGROUND: A major bottleneck in our understanding of the molecular underpinnings of life is the assignment of function to proteins. While molecular experiments provide the most reliable annotation of proteins, their relatively low throughput and restricted purview have led to an increasing role for computational function prediction. However, assessing methods for protein function prediction and tracking progress in the field remain challenging. RESULTS: We conducted the second critical assessment of functional annotation (CAFA), a timed challenge to assess computational methods that automatically assign protein function...
2016: Genome Biology
Magdalena Dziegala, Monika Kasztura, Kamil Kobak, Jacek Bania, Waldemar Banasiak, Piotr Ponikowski, Ewa A Jankowska
The differential availability of iron during hypoxia is presumed to affect the functioning of cardiac and skeletal myocytes. Rat H9C2 cardiomyocytes and L6G8C5 myocytes were cultured for 48 h in normoxic or hypoxic conditions at the optimal, reduced or increased iron concentration. The mRNA expression levels of markers of apoptosis [B‑cell lymphoma‑2 (Bcl2; inhibition) and Bcl‑2‑activated X protein (Bax; induction)], atrophy (Atrogin), glycolysis (pyruvate kinase 2; PKM2) and iron metabolism [transferrin receptor 1 (TfR1; iron importer), ferroportin 1 (FPN1; iron exporter), ferritin heavy chain (FTH; iron storage protein) and hepcidin (HAMP; iron regulator)] were determined using reverse transcription‑quantitative polymerase chain reaction, and cell viability was measured using an tetrazolium reduction assay...
October 2016: Molecular Medicine Reports
J A Núñez-Díaz, M Fumanal, J M Mancera, M A Moriñigo, M C Balebona
The marine fish pathogen Photobacterium damselae subsp. piscicida (Phdp) is responsible for important disease outbreaks affecting cultured fish species including the flatfish Solea senegalensis. In the present work, transcription of iron metabolism related genes (TF, FERR-M, HP-1 and HAMP-1) as well as innate immune system components such as complement proteins (C3 and C7), lysozyme (LYS-G), TNF family (TNFα, TRAF-3), NCCRP-1 and heat shock protein encoding genes (HSP70, HSP90AA, HSP90AB and GP96) has been determined in the liver and kidney of S...
October 15, 2016: Veterinary Immunology and Immunopathology
Felix Stickel, Christophe Moreno, Jochen Hampe, Marsha Y Morgan
The susceptibility to develop alcohol dependence and significant alcohol-related liver injury is determined by a number of constitutional, environmental and genetic factors, although the nature and level of interplay between them remains unclear. The familiarity and heritability of alcohol dependence is well-documented but, to date, no strong candidate genes have emerged with the exception of variants in alcohol dehydrogenase and acetaldehyde dehydrogenase, which confer protection predominantly in individuals of East Asian ancestry...
August 26, 2016: Journal of Hepatology
Juliana Frossard Ribeiro Mendes, Egle Machado de Almeida Siqueira, João Gabriel Marques de Brito E Silva, Sandra Fernandes Arruda
BACKGROUND: Considering that vitamin A deficiency modulates hepcidin expression and consequently affects iron metabolism, we evaluated the effect of vitamin A deficiency in the expression of genes involved in the hemojuvelin (HJV)-bone morphogenetic protein 6 (BMP6)-small mothers against decapentaplegic protein (SMAD) signaling pathway. METHODS: Male Wistar rats were treated: control AIN-93G diet (CT), vitamin A-deficient diet (VAD), iron-deficient diet (FeD), vitamin A- and iron-deficient diet (VAFeD), or 12 mg all-trans retinoic acid (atRA)/kg diet...
2016: Genes & Nutrition
William Hampes
Research has shown that a factor in a victim's forgiveness of an offender is the victim's ability to make more positive, or at least less negative, attributions of the offender's behavior and that perspective-taking can be a factor in facilitating that process. Self-enhancing humor has been found to be positively correlated with perspective-taking empathy and aggressive humor found to be negatively correlated with perspective-taking empathy. Therefore it was predicted that self-enhancing humor would be positively correlated with forgiveness and aggressive humor negatively correlated with forgiveness...
August 2016: Europe's journal of psychology
Julia Hamp, Andreas Löwer, Christine Dottermusch-Heidel, Lothar Beck, Bernard Moussian, Matthias Flötenmeyer, Susanne-Filiz Önel
The fusion of founder cells and fusion-competent myoblasts (FCMs) is crucial for muscle formation in Drosophila Characteristic events of myoblast fusion include the recognition and adhesion of myoblasts, and the formation of branched F-actin by the Arp2/3 complex at the site of cell-cell contact. At the ultrastructural level, these events are reflected by the appearance of finger-like protrusions and electron-dense plaques that appear prior to fusion. Severe defects in myoblast fusion are caused by the loss of Kette (a homolog of Nap1 and Hem-2, also known as NCKAP1 and NCKAP1L, respectively), a member of the regulatory complex formed by Scar or WAVE proteins (represented by the single protein, Scar, in flies)...
September 15, 2016: Journal of Cell Science
Houda Hamdi-Rozé, Marie-Pascale Beaumont-Epinette, Zeineb Ben Ali, Caroline Le Lan, Véronique Loustaud-Ratti, Xavier Causse, Olivier Loreal, Yves Deugnier, Pierre Brissot, Anne-Marie Jouanolle, Edouard Bardou-Jacquet
p.Cys282Tyr (C282Y) homozygosity explains most cases of HFE-related hemochromatosis, but a significant number of patients presenting with typical type I hemochromatosis phenotype remain unexplained. We sought to describe the clinical relevance of rare HFE variants in non-C282Y homozygotes. Patients referred for hemochromatosis to the National Reference Centre for Rare Iron Overload Diseases from 2004 to 2010 were studied. Sequencing was performed for coding region and intronic flanking sequences of HFE, HAMP, HFE2, TFR2, and SLC40A1...
August 12, 2016: American Journal of Hematology
Tilman Schirmer
Cellular levels of the second messenger cyclic di-guanosine monophosphate (c-di-GMP) are determined by the antagonistic activities of diguanylate cyclases and specific phosphodiesterases. In a given bacterial organism, there are often multiple variants of the two enzymes, which are tightly regulated by a variety of external and internal cues due to the presence of specialized sensory or regulatory domains. Dependent on the second messenger level, specific c-di-GMP receptors then control fundamental cellular processes, such as bacterial life style, biofilm formation, and cell cycle control...
September 25, 2016: Journal of Molecular Biology
Baoliang Liu, Rui Jia, Cen Han, Bin Huang, Ji-Lin Lei
This study was designed to evaluate the physiological and immune responses of juvenile turbot to stocking density. Turbot (average weight 185.4g) were reared for 120days in a land based recirculating aquaculture system (RAS) under three stocking densities: low density (LD, ~9.3-26.1kg/m(2), initial to final density), medium density (MD, ~13.6-38.2kg/m(2)) and high density (HD, ~19.1-52.3kg/m(2)). Fish were sampled at days 0, 40, 80 and 120 to obtain growth parameters and liver tissues. No significant difference was detected in growth, biochemical parameters and gene expression among the three densities until at the final sampling (day 120)...
August 3, 2016: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
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