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https://www.readbyqxmd.com/read/29156357/generation-of-complement-molecular-complex-c5b-9-c5b-9-in-response-to-poly-traumatic-hemorrhagic-shock-and-evaluation-of-c5-cleavage-inhibitors-in-non-human-primates
#1
R Madelaine Paredes, Sarah Reyna, Philip Vernon, Douglas K Tadaki, Jurandir J Dallelucca, Forest Sheppard
Severe trauma initiates a systemic inflammatory cascade and that involves early activation of complement and cleavage of C5 into C5a (anaphylatoxin) and C5b (C5b-9 membrane attack complex). We examined activation of C5 in non-human primate (NHP) models of hemorrhagic shock. Blood plasma concentrations of C5b-9 were significantly increased in NHPs in response to hemorrhage alone and were further increased with the addition of tissue trauma. The onset of increased C5 cleavage was accelerated in NHPs that experienced decompensated poly-traumatic hemorrhagic shock...
November 17, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29156248/the-symbolic-violence-of-outbreak-a-mixed-methods-quasi-experimental-impact-evaluation-of-social-protection-on-ebola-survivor-wellbeing
#2
Eugene T Richardson, J Daniel Kelly, Osman Sesay, Michael D Drasher, Ishaan K Desai, Raphael Frankfurter, Paul E Farmer, Mohamed Bailor Barrie
Despite over 28,000 reported cases of Ebola virus disease (EVD) in the 2013-16 outbreak in West Africa, we are only beginning to trace the complex biosocial processes that have promoted its spread. Important questions remain, including the effects on survivors of clinical sequelae, loss of family and livelihood, and other psychological and social trauma. Another poorly understood question is what effect social protection and job creation programs have had on survivors' wellbeing. Several clinical and social protection programs have been developed to respond to the needs of EVD survivors; however, little in the way of impact evaluation has taken place...
November 11, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/29155828/role-of-co-repressor-genomic-landscapes-in-shaping-the-notch-response
#3
Stephen K K Chan, Gustavo Cerda-Moya, Robert Stojnic, Kat Millen, Bettina Fischer, Silvie Fexova, Lenka Skalska, Maria Gomez-Lamarca, Zoe Pillidge, Steven Russell, Sarah J Bray
Repressors are frequently deployed to limit the transcriptional response to signalling pathways. For example, several co-repressors interact directly with the DNA-binding protein CSL and are proposed to keep target genes silenced in the absence of Notch activity. However, the scope of their contributions remains unclear. To investigate co-repressor activity in the context of this well defined signalling pathway, we have analysed the genome-wide binding profile of the best-characterized CSL co-repressor in Drosophila, Hairless, and of a second CSL interacting repressor, SMRTER...
November 20, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/29155802/investigation-of-common-low-frequency-and-rare-genome-wide-variation-in-anorexia-nervosa
#4
L M Huckins, K Hatzikotoulas, L Southam, L M Thornton, J Steinberg, F Aguilera-McKay, J Treasure, U Schmidt, C Gunasinghe, A Romero, C Curtis, D Rhodes, J Moens, G Kalsi, D Dempster, R Leung, A Keohane, R Burghardt, S Ehrlich, J Hebebrand, A Hinney, A Ludolph, E Walton, P Deloukas, A Hofman, A Palotie, P Palta, F J A van Rooij, K Stirrups, R Adan, C Boni, R Cone, G Dedoussis, E van Furth, F Gonidakis, P Gorwood, J Hudson, J Kaprio, M Kas, A Keski-Rahonen, K Kiezebrink, G-P Knudsen, M C T Slof-Op 't Landt, M Maj, A M Monteleone, P Monteleone, A H Raevuori, T Reichborn-Kjennerud, F Tozzi, A Tsitsika, A van Elburg, D A Collier, P F Sullivan, G Breen, C M Bulik, E Zeggini
Anorexia nervosa (AN) is a complex neuropsychiatric disorder presenting with dangerously low body weight, and a deep and persistent fear of gaining weight. To date, only one genome-wide significant locus associated with AN has been identified. We performed an exome-chip based genome-wide association studies (GWAS) in 2158 cases from nine populations of European origin and 15 485 ancestrally matched controls. Unlike previous studies, this GWAS also probed association in low-frequency and rare variants. Sixteen independent variants were taken forward for in silico and de novo replication (11 common and 5 rare)...
July 25, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/29155581/phosphorescence-control-mediated-by-molecular-rotation-and-aurophilic-interactions-in-amphidynamic-crystals-of-1-4-bis-tri-p-fluorophenyl-phosphane-gold-i-ethynyl-benzene
#5
Mingoo Jin, Tim S Chung, Tomohiro Seki, Hajime Ito, Miguel A Garcia-Garibay
Here we present a structural design aimed at the control of phosphorescence emission as the result of changes in molecular rotation in a crystalline material. The proposed strategy includes the use of aurophilic interactions, both as a crystal engineering tool and as sensitive emission probe, and the use of a dumbbell-shaped architecture intended to create a low packing density region that permits the rotation of a central phenylene. Molecular rotor 1 with of a central 1,4-diethynylphenylene rotator linked to two gold(I) triphenylphosphane complexes was prepared and its structure confirmed by single crystal X-ray diffraction (XRD), which revealed chains mediated by dimeric aurophilic interactions...
November 20, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29155560/asymmetric-assembling-of-iron-oxide-nanocubes-for-improving-magnetic-hyperthermia-performance
#6
Dina Niculaes, Aidin Lak, George C Anyfantis, Sergio Marras, Oliver Laslett, Sahitya K Avugadda, Marco Cassani, David Serantes, Ondrej Hovorka, Roy Chantrell, Teresa Pellegrino
agnetic hyperthermia (MH) based on magnetic nanoparticles (MNPs) is a promising adjuvant therapy for cancer treatment. Particle clustering leading to complex magnetic interactions affects the heat generated by MNPs during MH. The heat efficiencies, theoretically predicted, are still poorly understood because of lack of the control of the fabrication of such clusters with defined geometries and thus their functionality. This study aims to correlate the heating efficiency under MH of individually coated iron oxide nanocubes (IONCs) vs...
November 20, 2017: ACS Nano
https://www.readbyqxmd.com/read/29155457/impact-of-the-substituent-variation-on-the-presence-of-thermal-spin-crossover-in-the-series-of-mononuclear-iron-iii-schiff-base-complexes-with-terminal-pseudohalido-coligands
#7
Ivan Salitros, Lukáš Pogány, Barbora Brachňaková, Jan Moncol, Jan Pavlik, Ivan Nemec, Zdeněk Trávniček, Milan Mazúr, Lukáš Bučinský, Ľubomír Suchánek
A series of novel iron(III) complexes of the general formula [Fe(L)X] (where L stands for a dianion of pentadentate Schiff base ligand N,N'-bis((2-hydroxy-3,5-dimethylphenyl)phenyl)methylidene-1,6-diamino-3-azapentane=H2L1 for 1 and 2; N,N'-bis((2-hydroxy-3-ethoxyphenyl)methylidene)-1,6-diamino-3-azapentane=H2L2 for 3 and 3·C3H6O) and X is terminal pseudohalido ligand (X=N3 for 1, X=NCS for 2, and X=NCSe for 3 and 3·C3H6O) has been synthesized and thoroughly characterized. Magnetic measurements revealed the above room temperature spin crossover for isomorphic complexes 1 and 2 (T1/2 = 441 K and T1/2 = 435 K, respectively), while the solvent-free complex 3 showed a half complete spin crossover (T1/2 = 250 K), which was detected by a variable temperature crystallography as well...
November 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29155329/cloning-and-characterization-of-two-novel-%C3%AE-glucosidase-genes-encoding-isoenzymes-of-the-cellobiase-complex-from-cellulomonas-biazotea
#8
Anthony K N Chan, Alan K L Ng, Kate K Y Ng, W K R Wong
Enzymatic degradation of cellulosic waste to generate renewable biofuels has offered an attractive solution to the energy problem. Synergistic hydrolysis of cellulose residues requires the participation of three different types of cellulases - endoglucanases, exoglucanases, and β-glucosidases (Bgl). Our group has been interested in using Bgl of Cellulomonas biazotea in studies designed to investigate cooperative action among different cellulases. We previously have cloned bgl genes encoding Cba and Cba3, which are C...
November 16, 2017: Gene
https://www.readbyqxmd.com/read/29155205/cystic-echinococcosis-in-turkana-kenya-30-years-of-imaging-in-an-endemic-region
#9
N Solomon, E Zeyhle, K Subramanian, P J Fields, T Romig, P Kern, J Y Carter, J Wachira, A Mengiste, C N L Macpherson
Cystic echinococcosis (CE), a widespread, complex zoonosis, causes chronic disease associated with high morbidity. The pastoral Turkana people of Kenya have one of the highest prevalence rates of CE in the world. Between 1983 and 2015, a CE control program in the Turkana region used ultrasound (US) screening surveys and surgical outreach visits to evaluate CE prevalence and treat those with the disease. As the gold standard modality for diagnosing CE, US reveals a great deal of information about the disease in affected populations...
November 16, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29155115/transtentorial-distortion-syndrome-a-consistent-complication-following-lateral-and-fourth-ventricular-shunting-in-adults
#10
Claudia L Craven, Irene Baudracco, Simon D Thompson, Lewis Thorne, Laurence D Watkins, Ahmed K Toma
BACKGROUND: Complex hydrocephalus affecting lateral and fourth ventricles separately is occasionally managed with CSF diversion via supra- and infra-tentorial ventricular catheters. The optimal configuration to reduce complications is currently unknown in adults. We describe a consistently similar clinical presentation of patients with complex hydrocephalus and a fourth ventricle separately drained by infra-tentorial shunt insertion. METHODS: A retrospective single centre case series...
November 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29154144/multi-platform-omics-analysis-of-human-ebola-virus-disease-pathogenesis
#11
Amie J Eisfeld, Peter J Halfmann, Jason P Wendler, Jennifer E Kyle, Kristin E Burnum-Johnson, Zuleyma Peralta, Tadashi Maemura, Kevin B Walters, Tokiko Watanabe, Satoshi Fukuyama, Makoto Yamashita, Jon M Jacobs, Young-Mo Kim, Cameron P Casey, Kelly G Stratton, Bobbie-Jo M Webb-Robertson, Marina A Gritsenko, Matthew E Monroe, Karl K Weitz, Anil K Shukla, Mingyuan Tian, Gabriele Neumann, Jennifer L Reed, Harm van Bakel, Thomas O Metz, Richard D Smith, Katrina M Waters, Alhaji N'jai, Foday Sahr, Yoshihiro Kawaoka
The pathogenesis of human Ebola virus disease (EVD) is complex. EVD is characterized by high levels of virus replication and dissemination, dysregulated immune responses, extensive virus- and host-mediated tissue damage, and disordered coagulation. To clarify how host responses contribute to EVD pathophysiology, we performed multi-platform 'omics analysis of peripheral blood mononuclear cells and plasma from EVD patients. Our results indicate that EVD molecular signatures overlap with those of sepsis, imply that pancreatic enzymes contribute to tissue damage in fatal EVD, and suggest that Ebola virus infection may induce aberrant neutrophils whose activity could explain hallmarks of fatal EVD...
November 15, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/29153845/identification-of-abc-transporters-acting-in-vitamin-b12-metabolism-in-caenorhabditis-elegans
#12
Megan K McDonald, Julie-Anne Fritz, Dongxin Jia, Deborah Scheuchner, Floyd F Snyder, Avalyn Stanislaus, Jared Curle, Liang Li, Sally P Stabler, Robert H Allen, Paul E Mains, Roy A Gravel
Vitamin B12 (cobalamin, Cbl) is a micronutrient essential to human health. Cbl is not utilized as is but must go through complex subcellular and metabolic processing to generate two cofactor forms: methyl-Cbl for methionine synthase, a cytosolic enzyme; and adenosyl-Cbl for methylmalonyl-CoA mutase, a mitochondrial enzyme. Some 10-12 human genes have been identified responsible for the intracellular conversion of Cbl to cofactor forms, including genes that code for ATP-binding cassette (ABC) transporters acting at the lysosomal and plasma membranes...
November 11, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29153518/subacute-ruminal-acidosis-affects-fermentation-and-endotoxin-concentration-in-the-rumen-and-relative-expression-of-the-cd14-tlr4-md2-genes-involved-in-lipopolysaccharide-systemic-immune-response-in-dairy-cows
#13
B Stefanska, W Człapa, E Pruszynska-Oszmałek, D Szczepankiewicz, V Fievez, J Komisarek, K Stajek, W Nowak
The first objective of this study was to investigate the effects of subacute ruminal acidosis (SARA) on fermentation, ruminal free lipopolysaccharides (LPS), and expression of the cluster of differentiation 14 (CD14), toll-like receptor 4 (TLR4), and myeloid differentiation protein 2 (MD2) complex in white blood cells involved in the systemic immune response in dairy cows. The second objective was a study of whether increased expression of the LPS receptor complex led to increases in the concentrations of plasma high-density lipoprotein (HDL) and serum Ca...
November 15, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29153506/role-of-non-local-interactions-between-cdr-loops-in-binding-affinity-of-mr78-antibody-to-marburg-virus-glycoprotein
#14
Amandeep K Sangha, Jinhui Dong, Lauren Williamson, Takao Hashiguchi, Erica Ollmann Saphire, James E Crowe, Jens Meiler
An atomic-detail model of the Marburg virus glycoprotein in complex with a neutralizing human monoclonal antibody designated MR78 was constructed using Phenix.Rosetta starting from a 3.6Å crystallographic density map. The Asp at T6 in the HCDR3's bulged torso cannot form the canonical salt bridge as position T2 lacks an Arg or Lys residue. It instead engages in a hydrogen bond interaction with a Tyr contributed by the HCDR1 loop. This inter-CDR loop interaction stabilizes the bulged conformation needed for binding to the viral glycoprotein: a Tyr to Phe mutant displays a binding affinity reduced by a factor of at least 10...
November 14, 2017: Structure
https://www.readbyqxmd.com/read/29153505/structural-basis-for-the-inhibitory-effects-of-ubistatins-in-the-ubiquitin-proteasome-pathway
#15
Mark A Nakasone, Timothy A Lewis, Olivier Walker, Anita Thakur, Wissam Mansour, Carlos A Castañeda, Jennifer L Goeckeler-Fried, Frank Parlati, Tsui-Fen Chou, Ortal Hayat, Daoning Zhang, Christina M Camara, Steven M Bonn, Urszula K Nowicka, Susan Krueger, Michael H Glickman, Jeffrey L Brodsky, Raymond J Deshaies, David Fushman
The discovery of ubistatins, small molecules that impair proteasomal degradation of proteins by directly binding to polyubiquitin, makes ubiquitin itself a potential therapeutic target. Although ubistatins have the potential for drug development and clinical applications, the lack of structural details of ubiquitin-ubistatin interactions has impeded their development. Here, we characterized a panel of new ubistatin derivatives using functional and binding assays. The structures of ubiquitin complexes with ubistatin B and hemi-ubistatin revealed direct interactions with ubiquitin's hydrophobic surface patch and the basic/polar residues surrounding it...
November 15, 2017: Structure
https://www.readbyqxmd.com/read/29153323/microtubule-tip-tracking-by-the-spindle-and-kinetochore-protein-ska1-requires-diverse-tubulin-interacting-surfaces
#16
Julie K Monda, Ian P Whitney, Ekaterina V Tarasovetc, Elizabeth Wilson-Kubalek, Ronald A Milligan, Ekaterina L Grishchuk, Iain M Cheeseman
The macromolecular kinetochore functions to generate interactions between chromosomal DNA and spindle microtubules [1]. To facilitate chromosome movement and segregation, kinetochores must maintain associations with both growing and shrinking microtubule ends. It is critical to define the proteins and their properties that allow kinetochores to associate with dynamic microtubules. The kinetochore-localized human Ska1 complex binds to microtubules and tracks with depolymerizing microtubule ends [2]. We now demonstrate that the Ska1 complex also autonomously tracks with growing microtubule ends in vitro, a key property that would allow this complex to act at kinetochores to mediate persistent associations with dynamic microtubules...
November 9, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/29153093/next-generation-sequencing-and-molecular-cytogenetic-characterization-of-etv6-lyn-fusion-due-to-chromosomes-1-8-and-12-rearrangement-in-acute-myeloid-leukemia
#17
Edmond S K Ma, Thomas S K Wan, Chun Hang Au, Dona N Ho, Shing Yan Ma, Margaret H L Ng, Tsun Leung Chan
In a newly diagnosed patient with acute myeloid leukemia (AML) and complex cytogenetics and negative for gene mutations associated with myeloid neoplasms, RNA sequencing by next-generation sequencing (NGS) through a large cancer-related gene panel showed ETV6-LYN leukemic fusion transcript. Breakpoint analysis of the NGS reads showed fusion of exon 5 of the ETV6 gene to exon 8 of the LYN gene. Metaphase fluorescence in situ hybridization (FISH) inferred a four-break rearrangement of three chromosomes, namely 1, 8 and 12...
December 2017: Cancer Genetics
https://www.readbyqxmd.com/read/29153091/detection-of-complex-genomic-signatures-associated-with-risk-in-plasma-cell-disorders
#18
Nadine K Berry, Amanda Dixon-McIver, Rodney J Scott, Philip Rowlings, Anoop K Enjeti
Plasma cell disorders (PCD) range from benign to highly malignant disease. The ability to detect risk-stratifying aberrations based on cytogenetic and molecular genetic assays plays an increasing role in therapeutic decision making. In this study, 58 patients were chosen for screening by comparative genomic hybridisation microarray (aCGH) to identify the new high-risk prognostic markers of chromothripsis and chromoanasynthesis. All patients had an unequivocal clinical diagnosis of a plasma cell disorder (plasma cell myeloma (PCM)(n = 51) or monoclonal gammopathy of undetermined significance (MGUS)(n = 7)) and an abnormal FISH result...
December 2017: Cancer Genetics
https://www.readbyqxmd.com/read/29152876/refining-transcriptome-gene-catalogs-by-ms-validation-of-expressed-proteins
#19
Sirius P K Tse, Mathieu Beauchemin, David Morse, Samuel C L Lo
Protein sequence identification by tandem mass spectroscopy (LC-MS/MS) identifies thousands of protein sequences even in complex mixtures, and provides valuable insight into the biological functions of different cells. For non-model organisms, transcriptomes are generally used to allow peptide identification, an important addition to their use as a gene catalog allowing the potential metabolic activities of cells to be determined. Here, we used LC-MS/MS data to identify which of the six possible reading frames in the transcriptome was actually used by the cell to make protein, and asked whether this would have an impact on downstream analyses using the transcriptome...
November 19, 2017: Proteomics
https://www.readbyqxmd.com/read/29152782/oestradiol-17%C3%AE-is-a-local-factor-inducing-the-early-stage-of-spermatogenesis-in-mouse-testes
#20
K G Kim, Y S Park
This study was undertaken to elucidate the effect of testicular oestradiol-17β (E2 ) on spermatogenesis. Spermatogonial development and spermatogenic gene expression in testicular germ cells were investigated using an in vitro culture system supplemented with E2 . E2 stimulated spermatocytogenic development of cultured testicular germ cells regardless of the addition of follicle-stimulating hormone and testosterone to the culture medium. E2 also induced the expression of genes encoding synaptonemal complex protein 1 and protamine 1, proteins required for spermatogenesis...
November 20, 2017: Andrologia
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