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https://www.readbyqxmd.com/read/28321044/investigation-of-the-early-response-genes-in-chemical-induced-renal-carcinogenicity-for-the-prediction-of-chemical-carcinogenicity-in-rats
#1
Hiroshi Matsumoto, Fumiyo Saito, Masahiro Takeyoshi
This study was designed to identify early-response genes of chemical-induced renal carcinogenicity for the prediction of chemical carcinogenicity in rats. We conducted a 28-day repeated-dose test in male Crl:CD (SD) rats with 12 carcinogens and 10 non-carcinogens as the training dataset, and five carcinogens and five non-carcinogens as the validation dataset. Renal gene expression profiles were analyzed by using a microarray. Fifteen candidate genes were selected from the gene expression profiles of the training dataset as genes that showed specific expression in response to carcinogens...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28282554/erythropoietin-administration-increases-splenic-erythroferrone-protein-content-and-liver-tmprss6-protein-content-in-rats
#2
Iuliia Gurieva, Jana Frýdlová, Zuzana Rychtarčíková, Martin Vokurka, Jaroslav Truksa, Jan Krijt
Erythroferrone (ERFE) and TMPRSS6 are important proteins in the regulation of iron metabolism. The objective of the study was to examine splenic ERFE and liver TMPRSS6 synthesis in rats treated with a combination of iron and erythropoietin (EPO). EPO was administered to female Wistar rats at 600U/day for four days, iron-pretreated rats received 150mg of iron before EPO treatment. Content of ERFE and TMPRSS6 proteins was determined by commercial antibodies. Iron pretreatment prevented the EPO-induced decrease in hepcidin expression...
February 28, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28274107/pathophysiology-and-management-of-alcoholic-liver-disease-update-2016
#3
REVIEW
Felix Stickel, Christian Datz, Jochen Hampe, Ramon Bataller
Alcoholic liver disease (ALD) is a leading cause of cirrhosis, liver cancer, and acute and chronic liver failure and as such causes significant morbidity and mortality. While alcohol consumption is slightly decreasing in several European countries, it is rising in others and remains high in many countries around the world. The pathophysiology of ALD is still incompletely understood but relates largely to the direct toxic effects of alcohol and its main intermediate, acetaldehyde. Recently, novel putative mechanisms have been identified in systematic scans covering the entire human genome and raise new hypotheses on previously unknown pathways...
March 15, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28263819/cortisol-plays-a-role-in-the-high-environmental-ammonia-associated-suppression-of-the-immune-response-in-zebrafish
#4
A F Gonçalves, J V Neves, J Coimbra, P Rodrigues, M M Vijayan, J M Wilson
Exposure to high environmental ammonia (HEA) levels increases the vulnerability of fishes to parasitic, viral and bacterial diseases. We tested the hypothesis that elevated plasma cortisol levels play a role in the HEA-mediated immunosuppression in fishes. To this end, we tested the effect of exogenous cortisol treatment on the lipopolysaccharide (LPS)-induced immune response in zebrafish (Danio rerio). Also, to test whether glucocorticoid receptor (GR) signaling is involved in HEA-mediated immunosuppression, zebrafish were treated with mifepristone, a GR antagonist, and the LPS-induced immune response assessed after HEA exposure...
March 2, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28228829/hepatic-iron-storage-is-related-to-body-adiposity-and-hepatic-inflammation
#5
Chan Yoon Park, Jayong Chung, Kyung-Ok Koo, Min Soo Kim, Sung Nim Han
BACKGROUND: Obesity has been reported to be associated with iron deficiency. However, few studies have investigated iron status in low adiposity. To investigate whether body adiposity was associated with altered hepatic iron status, we compared liver iron levels and markers involved in inflammation and iron absorption in obese, control, and mildly calorie restricted mice. METHODS: Seven week old C57BL/6 mice were fed control (10% kcal fat, Control) or high fat (60% kcal fat, HFD) diets, or reduced amount of control diet to achieve 15% calorie restriction (CR) for 16 weeks...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28228505/postdiagnostic-mediterranean-and-healthy-nordic-dietary-patterns-are-inversely-associated-with-all-cause-mortality-in-long-term-colorectal-cancer-survivors
#6
Ilka Ratjen, Clemens Schafmayer, Romina di Giuseppe, Sabina Waniek, Sandra Plachta-Danielzik, Manja Koch, Ute Nöthlings, Jochen Hampe, Sabrina Schlesinger, Wolfgang Lieb
Background: Dietary factors are known to affect the risk of new-onset colorectal cancer (CRC), but information on the extent to which postdiagnostic diet affects mortality in long-term CRC survivors is scarce.Objective: We investigated the association of 2 a priori-defined postdiagnostic dietary patterns [Modified Mediterranean Diet Score (MMDS) and healthy Nordic Food Index (HNFI)] with all-cause mortality in long-term CRC survivors.Methods: Diet was assessed at a median time of 6 y after cancer diagnosis in 1404 CRC survivors (median age: 69 y; 56% men) in a prospective cohort study in Northern Germany by using a semiquantitative food-frequency questionnaire...
February 22, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28213091/convergence-of-hepcidin-deficiency-systemic-iron-overloading-heme-accumulation-and-rev-erb%C3%AE-%C3%AE-activation-in-aryl-hydrocarbon-receptor-elicited-hepatotoxicity
#7
Kelly A Fader, Rance Nault, Mathew P Kirby, Gena Markous, Jason Matthews, Timothy R Zacharewski
Persistent aryl hydrocarbon receptor (AhR) agonists elicit dose-dependent hepatic lipid accumulation, oxidative stress, inflammation, and fibrosis in mice. Iron (Fe) promotes AhR-mediated oxidative stress by catalyzing reactive oxygen species (ROS) production. To further characterize the role of Fe in AhR-mediated hepatotoxicity, male C57BL/6 mice were orally gavaged with sesame oil vehicle or 0.01-30μg/kg 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) every 4days for 28days. Duodenal epithelial and hepatic RNA-Seq data were integrated with hepatic AhR ChIP-Seq, capillary electrophoresis protein measurements, and clinical chemistry analyses...
February 16, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28210661/maraviroc-as-possible-treatment-for-pml-iris-in-natalizumab-treated-patients-with-ms
#8
Sibylle C Hodecker, Klarissa H Stürner, Veit Becker, Birte Elias-Hamp, Brigitte Holst, Manuel A Friese, Christoph Heesen
No abstract text is available yet for this article.
March 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28204924/genome-wide-analysis-of-transposable-elements-in-the-coffee-berry-borer-hypothenemus-hampei-coleoptera-curculionidae-description-of-novel-families
#9
Eric M Hernandez-Hernandez, Rita Daniela Fernández-Medina, Lucio Navarro-Escalante, Jonathan Nuñez, Pablo Benavides-Machado, Claudia M A Carareto
The coffee berry borer (CBB) Hypothenemus hampei is the most limiting pest of coffee production worldwide. The CBB genome has been recently sequenced; however, information regarding the presence and characteristics of transposable elements (TEs) was not provided. Using systematic searching strategies based on both de novo and homology-based approaches, we present a library of TEs from the draft genome of CBB sequenced by the Colombian Coffee Growers Federation. The library consists of 880 sequences classified as 66% Class I (LTRs: 46%, non-LTRs: 20%) and 34% Class II (DNA transposons: 8%, Helitrons: 16% and MITEs: 10%) elements, including families of the three main LTR (Gypsy, Bel-Pao and Copia) and non-LTR (CR1, Daphne, I/Nimb, Jockey, Kiri, R1, R2 and R4) clades and DNA superfamilies (Tc1-mariner, hAT, Merlin, P, PIF-Harbinger, PiggyBac and Helitron)...
February 15, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28197547/neural-progenitor-cells-promote-axonal-growth-and-alter-axonal-mrna-localization-in-adult-neurons
#10
Tanuja T Merianda, Ying Jin, Ashley L Kalinski, Pabitra K Sahoo, Itzhak Fischer, Jeffery L Twiss
The inhibitory environment of the spinal cord and the intrinsic properties of neurons prevent regeneration of axons following CNS injury. However, both ascending and descending axons of the injured spinal cord have been shown to regenerate into grafts of embryonic neural progenitor cells (NPCs). Previous studies have shown that grafts composed of glial-restricted progenitors (GRPs) and neural-restricted progenitors (NRPs) can provide a permissive microenvironment for axon growth. We have used cocultures of adult rat dorsal root ganglion (DRG) neurons together with NPCs, which have shown significant enhancement of axon growth by embryonic rat GRP and GRPs/NRPs, both in coculture conditions and when DRGs are exposed to conditioned medium from the NPC cultures...
January 2017: ENeuro
https://www.readbyqxmd.com/read/28172755/p326-efficacy-of-vedolizumab-on-patient-reported-outcomes-in-ulcerative-colitis-patients-results-from-a-prospective-german-observational-study
#11
C Schmidt, 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 van Arnim, D Medicine Baumgart, A Stallmach
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28167524/gas-sensing-and-signaling-in-the-pas-heme-domain-of-the-pseudomonas-aeruginosa-aer2-receptor
#12
Darysbel Garcia, Emilie Orillard, Mark S Johnson, Kylie J Watts
The Aer2 chemoreceptor from Pseudomonas aeruginosa contains a PAS sensing domain that coordinates b-type heme and signals in response to the binding of O2, CO or NO. PAS-heme structures suggest that Aer2 uniquely coordinates heme via a His residue on a 310 helix (H234 on Eη), stabilizes O2 binding via a Trp residue (W283), and signals via both W283 and an adjacent Leu residue (L264). Ligand binding may displace L264 and reorient W283 for hydrogen-bonding to the ligand. Here we clarified the mechanisms by which Aer2-PAS binds heme, regulates ligand-binding, and initiates conformational signaling...
February 6, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28165484/new-insights-on-signal-propagation-by-sensory-rhodopsin-ii-transducer-complex
#13
A Ishchenko, E Round, V Borshchevskiy, S Grudinin, I Gushchin, J P Klare, A Remeeva, V Polovinkin, P Utrobin, T Balandin, M Engelhard, G Büldt, V Gordeliy
The complex of two membrane proteins, sensory rhodopsin II (NpSRII) with its cognate transducer (NpHtrII), mediates negative phototaxis in halobacteria N. pharaonis. Upon light activation NpSRII triggers a signal transduction chain homologous to the two-component system in eubacterial chemotaxis. Here we report on crystal structures of the ground and active M-state of the complex in the space group I212121. We demonstrate that the relative orientation of symmetrical parts of the dimer is parallel ("U"-shaped) contrary to the gusset-like ("V"-shaped) form of the previously reported structures of the NpSRII/NpHtrII complex in the space group P21212, although the structures of the monomers taken individually are nearly the same...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28163301/homeostasis-altering-molecular-processes-as-mechanisms-of-inflammasome-activation
#14
REVIEW
Adrian Liston, Seth L Masters
The innate immune system uses a distinct set of germline-encoded pattern recognition receptors (PRRs) to initiate downstream inflammatory cascades. This recognition system is in stark contrast to the adaptive immune system, which relies on highly variable, randomly generated antigen receptors. A key limitation of the innate immune system's reliance on fixed PRRs is its inflexibility in responding to rapidly evolving pathogens. Recent advances in our understanding of inflammasome activation suggest that the innate immune system also has sophisticated mechanisms for responding to pathogens for which there is no fixed PRR...
March 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28112447/flexible-percutaneous-endoscopic-retroperitoneal-necrosectomy-pen-as-rescue-therapy-for-pancreatic-necroses-beyond-the-reach-of-eus-a-case-series
#15
Christian Jürgensen, Stefan Brückner, Stephanie Reichel, Maik Kilian, Sven Pannach, Marius Distler, Jürgen Weitz, Frank Neser, Jochen Hampe, Uwe Will
Minimally invasive or endoscopic transluminal drainage and necrosectomy are the standard of care for infected pancreatic fluid collections and necroses after pancreatitis. In an endoscopic treatment algorithm, necroses beyond the reach of safe endoscopic access are typically treated by percutaneous drainage. We aimed to evaluate percutaneous minimally invasive necrosectomy using a purely endoscopic technique in patients with extensive necrosis. In patients with necroses beyond safe transluminal reach, the percutaneous drainage canal was used for flexible endoscopic access and dilatation of the tract to 20mm...
January 23, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28051796/%C3%A2-differences-in-hepatic-expression-of-iron-inflammation-and-stress-related-genes-in-patients-with-nonalcoholic-steatohepatitis
#16
Priya Handa, Akhila L Vemulakonda, Bryan D Maliken, Vicki Morgan-Stevenson, James E Nelson, Barjinder K Dhillon, Kelly A Hennessey, Rohit Gupta, Matthew M Yeh, Kris V Kowdley
 Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease worldwide. We have previously shown that hepatic reticuloendothelial system (RES) iron deposition is associated with an advanced degree of nonalcoholic steatohepatitis (NASH) in humans. In this study, we aimed to determine differentially expressed genes related to iron overload, inflammation and oxidative stress pathways, with the goal of identifying factors associated with NASH progression. Seventy five patients with NAFLD were evaluated for their biochemical parameters and their liver tissue analyzed for NASH histological characteristics...
January 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28028478/reappraisal-of-europe-s-most-complete-early-cretaceous-plesiosaurian-brancasaurus-brancai-wegner-1914-from-the-wealden-facies-of-germany
#17
Sven Sachs, Jahn J Hornung, Benjamin P Kear
The holotype of Brancasaurus brancai is one of the most historically famous and anatomically complete Early Cretaceous plesiosaurian fossils. It derived from the Gerdemann & Co. brickworks clay pit near Gronau (Westfalen) in North Rhine-Westphalia, northwestern Germany. Stratigraphically this locality formed part of the classic European "Wealden facies," but is now more formally attributed to the upper-most strata of the Bückeberg Group (upper Berriasian). Since its initial description in 1914, the type skeleton of B...
2016: PeerJ
https://www.readbyqxmd.com/read/28018333/phenylpyrroles-30-years-two-molecules-and-nearly-no-resistance
#18
REVIEW
Jaafar Kilani, Sabine Fillinger
Phenylpyrroles are chemical analogs of the natural antifungal compound pyrrolnitrin. Fenpiclonil, but mainly fludioxonil are registered against multiple fungal crop diseases since over 25 years for seed or foliar treatment. They have severe physiological impacts on the pathogen, including membrane hyperpolarization, changes in carbon metabolism and the accumulation of metabolites leading to hyphal swelling and burst. The selection and characterization of mutants resistant to phenylpyrroles have revealed that these fungicides activate the fungal osmotic signal transduction pathway through their perception by a typical fungal hybrid histidine kinase (HHK)...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28002404/epigenome-wide-association-study-of-body-mass-index-and-the-adverse-outcomes-of-adiposity
#19
Simone Wahl, Alexander Drong, Benjamin Lehne, Marie Loh, William R Scott, Sonja Kunze, Pei-Chien Tsai, Janina S Ried, Weihua Zhang, Youwen Yang, Sili Tan, Giovanni Fiorito, Lude Franke, Simonetta Guarrera, Silva Kasela, Jennifer Kriebel, Rebecca C Richmond, Marco Adamo, Uzma Afzal, Mika Ala-Korpela, Benedetta Albetti, Ole Ammerpohl, Jane F Apperley, Marian Beekman, Pier Alberto Bertazzi, S Lucas Black, Christine Blancher, Marc-Jan Bonder, Mario Brosch, Maren Carstensen-Kirberg, Anton J M de Craen, Simon de Lusignan, Abbas Dehghan, Mohamed Elkalaawy, Krista Fischer, Oscar H Franco, Tom R Gaunt, Jochen Hampe, Majid Hashemi, Aaron Isaacs, Andrew Jenkinson, Sujeet Jha, Norihiro Kato, Vittorio Krogh, Michael Laffan, Christa Meisinger, Thomas Meitinger, Zuan Yu Mok, Valeria Motta, Hong Kiat Ng, Zacharoula Nikolakopoulou, Georgios Nteliopoulos, Salvatore Panico, Natalia Pervjakova, Holger Prokisch, Wolfgang Rathmann, Michael Roden, Federica Rota, Michelle Ann Rozario, Johanna K Sandling, Clemens Schafmayer, Katharina Schramm, Reiner Siebert, P Eline Slagboom, Pasi Soininen, Lisette Stolk, Konstantin Strauch, E-Shyong Tai, Letizia Tarantini, Barbara Thorand, Ettje F Tigchelaar, Rosario Tumino, Andre G Uitterlinden, Cornelia van Duijn, Joyce B J van Meurs, Paolo Vineis, Ananda Rajitha Wickremasinghe, Cisca Wijmenga, Tsun-Po Yang, Wei Yuan, Alexandra Zhernakova, Rachel L Batterham, George Davey Smith, Panos Deloukas, Bastiaan T Heijmans, Christian Herder, Albert Hofman, Cecilia M Lindgren, Lili Milani, Pim van der Harst, Annette Peters, Thomas Illig, Caroline L Relton, Melanie Waldenberger, Marjo-Riitta Järvelin, Valentina Bollati, Richie Soong, Tim D Spector, James Scott, Mark I McCarthy, Paul Elliott, Jordana T Bell, Giuseppe Matullo, Christian Gieger, Jaspal S Kooner, Harald Grallert, John C Chambers
Approximately 1.5 billion people worldwide are overweight or affected by obesity, and are at risk of developing type 2 diabetes, cardiovascular disease and related metabolic and inflammatory disturbances. Although the mechanisms linking adiposity to associated clinical conditions are poorly understood, recent studies suggest that adiposity may influence DNA methylation, a key regulator of gene expression and molecular phenotype. Here we use epigenome-wide association to show that body mass index (BMI; a key measure of adiposity) is associated with widespread changes in DNA methylation (187 genetic loci with P < 1 × 10(-7), range P = 9...
December 21, 2016: Nature
https://www.readbyqxmd.com/read/27996012/emergent-order-in-the-kagome-ising-magnet-dy3mg2sb3o14
#20
Joseph A M Paddison, Harapan S Ong, James O Hamp, Paromita Mukherjee, Xiaojian Bai, Matthew G Tucker, Nicholas P Butch, Claudio Castelnovo, Martin Mourigal, S E Dutton
The Ising model-in which degrees of freedom (spins) are binary valued (up/down)-is a cornerstone of statistical physics that shows rich behaviour when spins occupy a highly frustrated lattice such as kagome. Here we show that the layered Ising magnet Dy3Mg2Sb3O14 hosts an emergent order predicted theoretically for individual kagome layers of in-plane Ising spins. Neutron-scattering and bulk thermomagnetic measurements reveal a phase transition at ∼0.3 K from a disordered spin-ice-like regime to an emergent charge ordered state, in which emergent magnetic charge degrees of freedom exhibit three-dimensional order while spins remain partially disordered...
December 20, 2016: Nature Communications
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