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https://www.readbyqxmd.com/read/28714907/genetic-contribution-to-alcohol-dependence-investigation-of-a-heterogeneous-german-sample-of-individuals-with-alcohol-dependence-chronic-alcoholic-pancreatitis-and-alcohol-related-cirrhosis
#1
Jens Treutlein, Josef Frank, Fabian Streit, Céline S Reinbold, Dilafruz Juraeva, Franziska Degenhardt, Liz Rietschel, Stephanie H Witt, Andreas J Forstner, Monika Ridinger, Jana Strohmaier, Norbert Wodarz, Helene Dukal, Jerome C Foo, Per Hoffmann, Stefan Herms, Stefanie Heilmann-Heimbach, Michael Soyka, Wolfgang Maier, Wolfgang Gaebel, Norbert Dahmen, Norbert Scherbaum, Bertram Müller-Myhsok, Susanne Lucae, Marcus Ising, Felix Stickel, Thomas Berg, Ulla Roggenbuck, Karl-Heinz Jöckel, Henrike Scholz, Ulrich S Zimmermann, Stephan Buch, Wolfgang H Sommer, Rainer Spanagel, Benedikt Brors, Sven Cichon, Karl Mann, Falk Kiefer, Jochen Hampe, Jonas Rosendahl, Markus M Nöthen, Marcella Rietschel
The present study investigated the genetic contribution to alcohol dependence (AD) using genome-wide association data from three German samples. These comprised patients with: (i) AD; (ii) chronic alcoholic pancreatitis (ACP); and (iii) alcohol-related liver cirrhosis (ALC). Single marker, gene-based, and pathway analyses were conducted. A significant association was detected for the ADH1B locus in a gene-based approach (puncorrected = 1.2 × 10(-6); pcorrected = 0.020). This was driven by the AD subsample...
July 17, 2017: Genes
https://www.readbyqxmd.com/read/28709862/1st-european-congress-of-medical-physics-september-1-4-2016-medical-physics-innovation-and-vision-within-europe-and-beyond
#2
EDITORIAL
Virginia Tsapaki, George C Kagadis, Marco Brambilla, Mario Ciocca, Catharine H Clark, Harry Delis, Giovanni Mettivier
Medical Physics is the scientific healthcare profession concerned with the application of the concepts and methods of physics in medicine. The European Federation of Organisations for Medical Physics (EFOMP) acts as the umbrella organization for European Medical Physics societies. Due to the rapid advancements in related scientific fields, medical physicists must have continuous education through workshops, training courses, conferences, and congresses during their professional life. The latest developments related to this increasingly significant medical speciality were presented during the 1st European Congress of Medical Physics 2016, held in Athens, September 1-4, 2016, organized by EFOMP, hosted by the Hellenic Association of Medical Physicists (HAMP), and summarized in the current volume...
July 11, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28689299/4-o-methylhonokiol-protects-from-alcohol-carbon-tetrachloride-induced-liver-injury-in-mice
#3
Eleonora Patsenker, Andrea Chicca, Vanessa Petrucci, Sheida Moghadamrad, Andrea de Gottardi, Jochen Hampe, Jürg Gertsch, Nasser Semmo, Felix Stickel
Alcoholic liver disease (ALD) is a leading cause of liver cirrhosis, liver cancer, and related mortality. The endocannabinoid system contributes to the development of chronic liver diseases, where cannabinoid receptor 2 (CB2) has been shown to have a protecting role. Thus, here, we investigated how CB2 agonism by 4'-O-methylhonokiol (MHK), a biphenyl from Magnolia grandiflora, affects chronic alcohol-induced liver fibrosis and damage in mice. A combination of alcohol (10% vol/vol) and CCl4 (1 ml/kg) was applied to C57BL/6 mice for 5 weeks...
July 8, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28678075/patients-undergoing-orthotopic-liver-transplantation-require-lower-concentrations-of-the-volatile-anesthetic-sevoflurane
#4
Joanna Baron-Stefaniak, Viola Götz, Andreas Allhutter, Judith Schiefer, Thomas Hamp, Peter Faybik, Gabriela Berlakovich, David M Baron, Walter Plöchl
BACKGROUND: Sevoflurane is a volatile anesthetic commonly used to maintain anesthesia in patients with end-stage liver disease (ESLD) undergoing orthotopic liver transplantation (OLT). Growing evidence suggests that patients with ESLD have decreased anesthetic requirements compared to patients with preserved liver function. The potency of volatile anesthetics is expressed as the minimum alveolar concentration (MAC). In this prospective, blinded study, we compared the MAC of sevoflurane among patients with ESLD undergoing OLT and patients with normal liver function undergoing major abdominal surgery...
July 1, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28673786/diurnal-variations-in-iron-concentrations-and-expression-of-genes-involved-in-iron-absorption-and-metabolism-in-pigs
#5
Yiming Zhang, Dan Wan, Xihong Zhou, Ciming Long, Xin Wu, Lan Li, Liuqin He, Pan Huang, Shuai Chen, Bie Tan, Yulong Yin
Diurnal variations in serum iron levels have been well documented in clinical studies, and serum iron is an important diagnostic index for iron-deficiency anemia. However, the underlying mechanism of dynamic iron regulation in response to the circadian rhythm is still unclear. In this study, we investigated daily variations in iron status in the plasma and liver of pigs. The transcripts encoding key factors involved in iron uptake and homeostasis were evaluated. The results showed that iron levels in the plasma and liver exhibited diurnal rhythms...
July 1, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28649438/translational-learning-from-clinical-studies-predicts-drug-pharmacokinetics-across-patient-populations
#6
Markus Krauss, Ute Hofmann, Clemens Schafmayer, Svitlana Igel, Jan Schlender, Christian Mueller, Mario Brosch, Witigo von Schoenfels, Wiebke Erhart, Andreas Schuppert, Michael Block, Elke Schaeffeler, Gabriele Boehmer, Linus Goerlitz, Jan Hoecker, Joerg Lippert, Reinhold Kerb, Jochen Hampe, Lars Kuepfer, Matthias Schwab
Early indication of late-stage failure of novel candidate drugs could be facilitated by continuous integration, assessment, and transfer of knowledge acquired along pharmaceutical development programs. We here present a translational systems pharmacology workflow that combines drug cocktail probing in a specifically designed clinical study, physiologically based pharmacokinetic modeling, and Bayesian statistics to identify and transfer (patho-)physiological and drug-specific knowledge across distinct patient populations...
2017: NPJ Systems Biology and Applications
https://www.readbyqxmd.com/read/28648331/il-35-as-a-newly-proposed-homeostasis-associated-molecular-pattern-plays-three-major-functions-including-anti-inflammatory-initiator-effector-and-blocker-in-cardiovascular-diseases
#7
Xinyuan Li, Pu Fang, William Y Yang, Hong Wang, Xiaofeng Yang
IL-35 is a new anti-inflammatory cytokine identified in 2007, which inhibits inflammation and immune responses by inducing regulatory T cells and regulatory B cells and suppressing effector T cells and macrophages. The unique initiator and effector anti-inflammatory properties of IL-35 bring tremendous interest in investigating its role during cardiovascular disease (CVD) development, in which inflammatory processes are firmly established as central to its development and complications. In this review, we update recent understanding of how IL-35 is produced and regulated in the cells...
June 22, 2017: Cytokine
https://www.readbyqxmd.com/read/28584864/student-selection-cannot-resolve-the-lack-of-general-practitioners-and-country-doctors
#8
Johanna Hissbach, Stefan Zimmermann, Wolfgang Hampe
No abstract text is available yet for this article.
2017: GMS Journal for Medical Education
https://www.readbyqxmd.com/read/28584863/reply-to-the-letter-to-the-editor-by-j-hissbach-s-zimmermann-w-hampe
#9
Iris Kesternich, Heiner Schumacher, Joachim Winter, Martin R Fischer, Matthias Holzer
No abstract text is available yet for this article.
2017: GMS Journal for Medical Education
https://www.readbyqxmd.com/read/28550187/dynamics-of-epigenetic-age-following-hematopoietic-stem-cell-transplantation
#10
Friedrich Stölzel, Mario Brosch, Steve Horvath, Michael Kramer, Christian Thiede, Malte von Bonin, Ole Ammerpohl, Moritz Middeke, Johannes Schetelig, Gerhard Ehninger, Jochen Hampe, Martin Bornhäuser
No abstract text is available yet for this article.
May 26, 2017: Haematologica
https://www.readbyqxmd.com/read/28549569/trpm-channels-as-potential-therapeutic-targets-against-pro-inflammatory-diseases
#11
REVIEW
Susanna Zierler, Sarah Hampe, Wiebke Nadolni
The immune system protects our body against foreign pathogens. However, if it overshoots or turns against itself, pro-inflammatory diseases, such as rheumatoid arthritis, inflammatory bowel disease, or diabetes develop. Ions, the most basic signaling molecules, shape intracellular signaling cascades resulting in immune cell activation and subsequent immune responses. Mutations in ion channels required for calcium signaling result in human immunodeficiencies and highlight those ion channels as valued targets for therapies against pro-inflammatory diseases...
May 3, 2017: Cell Calcium
https://www.readbyqxmd.com/read/28538210/correlation-of-hamp-gene-polymorphisms-and-expression-with-the-susceptibility-and-length-of-hospital-stays-in-taiwanese-children-with-kawasaki-disease
#12
Ying-Hsien Huang, Kuender D Yang, Yu-Wen Hsu, Hsing-Fang Lu, Henry Sung-Ching Wong, Hong-Ren Yu, Hsing-Chun Kuo, Fu-Chen Huang, Mao-Hung Lo, Kai-Sheng Hsieh, Su-Fen Chen, Wei-Chiao Chang, Ho-Chang Kuo
Kawasaki disease (KD) is a form of systemic vasculitis. Regarding its pathogenesis, HAMP gene encoding hepcidin, which is significant for iron metabolism, has a vital function. In this study, we recruited a total of 381 KD patients for genotyping. Data from 997 subjects (500 subjects from cohort 1; 497 subjects from cohort 2) were used for analysis. Using TaqMan allelic discrimination, we determined five tag SNPs (rs916145, rs10421768, rs3817623, rs7251432, and rs2293689). Treatment outcome data related to such clinical phenotypes as coronary artery lesions (CAL), coronary artery aneurysms (CAA), and intravenous immunoglobulin (IVIG) effects were also collected...
May 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28530443/association-of-single-nucleotide-polymorphism-in-the-hepcidin-promoter-gene-with-susceptibility-to-extrapulmonary-tuberculosis
#13
Li Liang, Huijuan Liu, Jun Yue, Li-Rong Liu, Min Han, Liu-Lin Luo, Yan-Lin Zhao, Heping Xiao
BACKGROUND: Hepcidin is a 25-amino acid peptide produced by the liver in response to inflammation and iron overload. It is encoded by the hepcidin antimicrobial peptide (HAMP) gene and plays a key role in innate immunity. Previous studies have reported that a -582 A>G polymorphism in the HAMP promoter (HAMP-P) affects hepcidin expression, causing susceptibility to various bacterial and viral pathogens. However, it is not known whether the HAMP-P -582 A>G polymorphism is associated with tuberculosis (TB) susceptibility...
June 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28527583/molecular-characterization-of-aspergillus-fumigatus-tcsc-a-characteristic-type-iii-hybrid-histidine-kinase-of-filamentous-fungi-harboring-six-hamp-domains
#14
Anja Spadinger, Frank Ebel
The type III hybrid histidine kinase (HHK) TcsC enables the pathogenic mold Aspergillus fumigatus to thrive under hyperosmotic conditions. It is, moreover, of particular interest, since it is the target of certain antifungal agents, such as fludioxonil. This study was aimed at a functional characterization of the domains that constitute the sensing and the kinase module of TcsC. The sensing module consists of six HAMP domains, an architecture that is commonly found in type III HHKs of filamentous fungi. To dissect the functional role of the individual domains, we have analyzed a set of truncated derivatives of TcsC with respect to their impact on fungal growth and their ability to respond to hyperosmotic stress and fludioxonil...
June 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28522691/mechanism-of-transmembrane-signaling-by-sensor-histidine-kinases
#15
Ivan Gushchin, Igor Melnikov, Vitaly Polovinkin, Andrii Ishchenko, Anastasia Yuzhakova, Pavel Buslaev, Gleb Bourenkov, Sergei Grudinin, Ekaterina Round, Taras Balandin, Valentin Borshchevskiy, Dieter Willbold, Gordon Leonard, Georg Büldt, Alexander Popov, Valentin Gordeliy
One of the major and essential classes of transmembrane (TM) receptors, present in all domains of life, is sensor histidine kinases (HKs), parts of two-component signaling systems (TCS). The structural mechanisms of transmembrane signaling by these sensors are poorly understood. We present here crystal structures of the periplasmic sensor domain, the TM domain and the cytoplasmic HAMP domain of the Escherichia coli nitrate/nitrite sensor HK NarQ in the ligand-bound and mutated ligand-free states. The structures reveal that the ligand binding induces significant rearrangements and piston-like shifts of TM helices...
May 18, 2017: Science
https://www.readbyqxmd.com/read/28514781/hepcidin-homeostasis-and-diseases-related-to-iron-metabolism
#16
Cadiele Oliana Reichert, Joel da Cunha, Débora Levy, Luciana Morganti Ferreira Maselli, Sérgio Paulo Bydlowski, Celso Spada
Iron is an essential metal for cell survival that is regulated by the peptide hormone hepcidin. However, its influence on certain diseases is directly related to iron metabolism or secondary to underlying diseases. Genetic alterations influence the serum hepcidin concentration, which can lead to an iron overload in tissues, as observed in haemochromatosis, in which serum hepcidin or defective hepcidin synthesis is observed. Another genetic imbalance of iron is iron-refractory anaemia, in which serum concentrations of hepcidin are increased, precluding the flow and efflux of extra- and intracellular iron...
2017: Acta Haematologica
https://www.readbyqxmd.com/read/28507548/iron-and-hepcidin-independent-downregulation-of-the-iron-exporter-ferroportin-in-macrophages-during-salmonella-infection
#17
Alexandra Willemetz, Sean Beatty, Etienne Richer, Aude Rubio, Anne Auriac, Ruth J Milkereit, Olivier Thibaudeau, Sophie Vaulont, Danielle Malo, François Canonne-Hergaux
Retention of iron in tissue macrophages via upregulation of hepcidin (HAMP) and downregulation of the iron exporter ferroportin (FPN) is thought to participate in the establishment of anemia of inflammation after infection. However, an upregulation of FPN has been proposed to limit macrophages iron access to intracellular pathogens. Therefore, we studied the iron homeostasis and in particular the regulation of FPN after infection with Salmonella enterica serovar Typhimurium in mice presenting tissue macrophages with high iron (AcB61), basal iron (A/J and wild-type mice), or low iron (Hamp knock out, Hamp(-/-)) levels...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28501597/reciprocal-regulation-between-hepcidin-and-erythropoiesis-and-its-therapeutic-application-in-erythroid-disorders
#18
REVIEW
Caiyi Wang, Zheng Fang, Zesen Zhu, Jing Liu, Huiyong Chen
Iron is required for hemoglobin production, and it plays a key role during erythropoiesis. Systemic iron homeostasis is mainly negatively regulated by the peptide hormone hepcidin, coded by the gene HAMP. Hepcidin excess may cause iron deficiency, iron-restricted erythropoiesis, and anemia. Conversely, hepcidin insufficiency leads to iron overload and oxidative damage in multiple tissues. During regulation of hepcidin synthesis, multiple promoter elements in the HAMP gene respond to variable signaling pathways corresponding to different extracellular situations...
May 10, 2017: Experimental Hematology
https://www.readbyqxmd.com/read/28480629/drivers-of-tree-fecundity-in-pedunculate-oak-quercus-robur-refugial-populations-at-the-species-southwestern-range-margin
#19
Eva Moracho, Pedro Jordano, Arndt Hampe
RATIONALE: The current low-latitudinal range margins of many extra-tropical plant species consist of small and scattered populations that persist locally in microrefugia. It remains poorly understood how their refugial distribution affects mating patterns and reproductive success. Here we examine flower and acorn production and their determinants in refugial populations of the widespread European forest tree Pedunculate oak (Quercus robur). METHODS: We monitored male flower, female flower and acorn production in 159 adult trees from 12 oak stands over two years...
May 8, 2017: Plant Biology
https://www.readbyqxmd.com/read/28461316/competitive-fitness-of-fluconazole-resistant-clinical-candida-albicans-strains
#20
Christina Popp, Irene A I Hampe, Tobias Hertlein, Knut Ohlsen, P David Rogers, Joachim Morschhäuser
The pathogenic yeast Candida albicans can develop resistance to the widely used antifungal agent fluconazole, which inhibits ergosterol biosynthesis. Resistance is often caused by gain-of-function mutations in the transcription factors Mrr1 and Tac1, which result in constitutive overexpression of multidrug efflux pumps, and Upc2, which result in constitutive overexpression of ergosterol biosynthesis genes. However, the deregulated gene expression that is caused by hyperactive forms of these transcription factors also reduces the fitness of the cells in the absence of the drug...
July 2017: Antimicrobial Agents and Chemotherapy
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