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https://www.readbyqxmd.com/read/28441858/-development-of-an-eosinophilic-bronchitis-mouse-model-and-the-effects-of-eosinophil-activation-on-airway-hyperresponsiveness-in-eosinophilic-bronchitis-mice
#1
L Li, J T Lin
Objective: To develop a mouse model of eosinophilic bronchitis, and explore the effects of eosinophil activation on airway hyperresponsiveness. Methods: A total of 60 female specific pathogen free BALB/c female mice were divided randomly into four groups: polymyxin B group, normal saline group, polymyxin B+ N-methionine leucine phenylalanine (fMLP) group, normal saline+ fMLP group. All the groups were given corresponding nasal drops for 21 days. The former two groups were given 12 μl 0.5% polymyxin B or normal saline once a day by transnasal administration respectively...
April 25, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28441856/-clinical-value-of-the-early-use-of-ulinastatin-in-patients-with-moderately-severe-or-severe-acute-pancreatitis
#2
J Wang, J Jin, J Huang, D R Li, Y Hao, J D Kong, Z Y Chu, J H Fu, F Huang
Objective: To observe the clinical efficacy and the effects on serum inflammatory factors of early use of ulinastatin in patients with moderately severe or severe acute pancreatitis (MSAP/SAP). Methods: This prospective, randomized, controlled trial was conducted in the First Affiliated Hospital of Soochow University from September 2013 to May 2016. A total of 42 cases were enrolled and assigned into either observation group or conventional treatment group (n=21 each). The conventional treatment group received somatostatin, while the observation group received somatostatin combined with ulinastatin...
April 25, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28441828/-clinical-analysis-of-seven-cases-of-pulmonary-malignant-tumors-in-children
#3
D Xu, Z M Chen, W Z Gu, Y S Wang, M X Huang, L F Tang, Y Y Zhang, Y Jiang
Objective: To understand the clinical manifestation, imaging characteristics and outcomes of pulmonary malignant tumors in children. Method: We retrospectively collected information about seven cases of pulmonary malignant tumors in children in our hospital from Jan 2010 to Dec 2016. The information included clinical manifestation, imaging characteristics, pathologic results, and treatment. Result: (1) All the seven patients firstly visited pediatric internal medicine departments. Symptoms included cough (n=6), dyspnea (n=4), fever (n=2), anorexia (n=2), chest tightness (n=1), chest pain (n=1), lameness (n=1), abdominal distension and constipation (n=1)...
April 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28441765/distinct-fiber-type-signature-in-mouse-muscles-expressing-a-mutant-lamin-a-responsible-for-congenital-muscular-dystrophy-in-a-patient
#4
Alice Barateau, Nathalie Vadrot, Onnik Agbulut, Patrick Vicart, Sabrina Batonnet-Pichon, Brigitte Buendia
Specific mutations in LMNA, which encodes nuclear intermediate filament proteins lamins A/C, affect skeletal muscle tissues. Early-onset LMNA myopathies reveal different alterations of muscle fibers, including fiber type disproportion or prominent dystrophic and/or inflammatory changes. Recently, we identified the p.R388P LMNA mutation as responsible for congenital muscular dystrophy (L-CMD) and lipodystrophy. Here, we asked whether viral-mediated expression of mutant lamin A in murine skeletal muscles would be a pertinent model to reveal specific muscle alterations...
April 24, 2017: Cells
https://www.readbyqxmd.com/read/28441762/replication-and-oncolytic-activity-of-an-avian-orthoreovirus-in-human-hepatocellular-carcinoma-cells
#5
Robert A Kozak, Larissa Hattin, Mia J Biondi, Juan C Corredor, Scott Walsh, Max Xue-Zhong, Justin Manuel, Ian D McGilvray, Jason Morgenstern, Evan Lusty, Vera Cherepanov, Betty-Anne McBey, David Leishman, Jordan J Feld, Byram Bridle, Éva Nagy
Oncolytic viruses are cancer therapeutics with promising outcomes in pre-clinical and clinical settings. Animal viruses have the possibility to avoid pre-existing immunity in humans, while being safe and immunostimulatory. We isolated an avian orthoreovirus (ARV-PB1), and tested it against a panel of hepatocellular carcinoma cells. We found that ARV-PB1 replicated well and induced strong cytopathic effects. It was determined that one mechanism of cell death was through syncytia formation, resulting in apoptosis and induction of interferon stimulated genes (ISGs)...
April 24, 2017: Viruses
https://www.readbyqxmd.com/read/28441761/e2-er-%C3%AE-enhances-calcineurin-protein-degradation-and-pi3k-akt-mdm2-signal-transduction-to-inhibit-iso-induced-myocardial-cell-apoptosis
#6
Kuan-Ho Lin, Wei-Wen Kuo, Marthandam Asokan Shibu, Cecilia-Hsuan Day, You-Liang Hsieh, Li-Chin Chung, Ray-Jade Chen, Su-Ying Wen, Vijaya Padma Viswanadha, Chih-Yang Huang
Secretion of multifunctional estrogen and its receptor has been widely considered as the reason for markedly higher frequency of heart disease in men than in women. 17β-Estradiol (E2), for instance, has been reported to prevent development of cardiac apoptosis via activation of estrogen receptors (ERs). In addition, protein phosphatase such as protein phosphatase 1 (PP1) and calcineurin (PP2B) are also involved in cardiac hypertrophy and cell apoptosis signaling. However, the mechanism by which E2/ERβ suppresses apoptosis is not fully understood, and the role of protein phosphatase in E2/ERβ action also needs further investigation...
April 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28441755/role-of-rheb-in-regulating-differentiation-fate-of-mesenchymal-stem-cells-for-cartilage-and-bone-regeneration
#7
Sajjad Ashraf, In-Bo Han, Hansoo Park, Soo-Hong Lee
Advances in mesenchymal stem cells (MSCs) and cell replacement therapies are promising approaches to treat cartilage and bone defects since substantial differentiation capacities of MSCs match the demands of tissue regeneration. Our understanding of the dynamic process requiring indispensable differentiation of MSCs remains limited. Herein, we describe the role of RHEB (Ras homolog enriched in brain) regulating gene signature for differentiation of human adipose derived mesenchymal stem cells (ASCs) into chondrogenic, osteogenic, and adipogenic lineages...
April 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28441735/effects-of-flavonoids-and-triterpene-analogues-from-leaves-of-eleutherococcus-sieboldianus-makino-koidz-himeukogi-in-3t3-l1-preadipocytes
#8
Atsuyoshi Nishina, Masaya Itagaki, Yuusuke Suzuki, Mamoru Koketsu, Masayuki Ninomiya, Daisuke Sato, Takashi Suzuki, Satoshi Hayakawa, Makoto Kuroda, Hirokazu Kimura
Eleutherococcus sieboldianus (Makino) Koidz. is a local product from the area in and around Yonezawa City in Yamagata Prefecture, Japan. It has been used as a medicinal plant for a long time. We isolated and identified four types of flavonoid glycosides [astragalin (1), isoquercetin (2), rhamnocitrin 3-O-glucoside (3), and nicotiflorin (4)], a triterpene [methyl hederagenin (5)], and three types of triterpene glycosides [δ-hederin (6), echinocystic acid 3-O-arabinoside (7), and cauloside B (8)] from the methanol extract of E...
April 22, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28441628/potassium-deficiency-affects-the-carbon-nitrogen-balance-in-cotton-leaves
#9
Wei Hu, Taylor D Coomer, Dimitra A Loka, Derrick M Oosterhuis, Zhiguo Zhou
Potassium (K) plays important roles in the metabolism of carbon (C) and nitrogen (N), but studies of K deficiency affecting C-N balance are lacking. This study explored the influence of K deficiency on C-N interaction in cotton leaves by conducting a field experiment with cotton cultivar DP0912 under two K rates (K0: 0 kg K2O ha(-1) and K67: 67 kg K2O ha(-1)) and a controlled environment experiment with K-deficient solution (K1: 0 mM K(+)) and K-sufficient solution (K2: 6 mM K(+)). The results showed that leaf K content, leaf number, leaf area, boll number, reproductive dry weight and total dry weight were significant lower under K deficiency (K0 or K1)...
April 6, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28441623/identification-of-a-macrobrachium-nipponense-c-type-lectin-with-a-close-evolutionary-relationship-to-vertebrate-lectins
#10
Xin Huang, Tingting Li, Min Jin, Shaowu Yin, Wen Wang, Qian Ren
C-type lectins (CTLs) are involved in the innate immune defense of vertebrates and invertebrates against invading pathogens. This study cloned and characterized a novel C-type lectin (MnCTL) of the oriental river prawn, Macrobrachium nipponense. The cloned MnCTL cDNA encompasses an open reading frame of 774 nucleotides and encodes polypeptides of 257 residues. The deduced MnCTL protein contains a single carbohydrate recognition domain (CRD) with an EPN (Glu-Pro-Asn) motif in calcium-binding site 2. Phylogenetic analysis indicated that MnCTL has a closer evolutionary relationship with vertebrate lectins than with invertebrate lectins...
April 22, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28441590/screening-arabidopsis-mutants-in-genes-useful-for-phytoremediation
#11
María Sanz-Fernández, María Rodríguez-Serrano, Ana Sevilla-Perea, Liliana Pena, M Dolores Mingorance, Luisa M Sandalio, María C Romero-Puertas
Emissions of heavy metals have risen over the past 200 years and significantly exceed those from natural sources. Phytoremediation strategies may be able to recover soil productivity in self-sustaining ecosystems; however, our knowledge of the molecular mechanisms involved in plant heavy-metal perception and signalling is scarce. The aim of this study was to assemble a "molecular tool box" of genes useful for phytoremediation. To identify mutants with different heavy-metal-tolerance, we first selected a medium from mixtures containing three metals based on their presence in two Spanish mining areas and then screened about 7000 lines of Arabidopsis T-DNA mutants and found 74 lines more resistant and 56 more susceptible than the wild type (WT)...
April 7, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28441533/a-global-view-of-rna-protein-interactions-identifies-post-transcriptional-regulators-of-root-hair-cell-fate
#12
Shawn W Foley, Sager J Gosai, Dongxue Wang, Nur Selamoglu, Amelia C Sollitti, Tino Köster, Alexander Steffen, Eric Lyons, Fevzi Daldal, Benjamin A Garcia, Dorothee Staiger, Roger B Deal, Brian D Gregory
The Arabidopsis thaliana root epidermis is comprised of two cell types, hair and nonhair cells, which differentiate from the same precursor. Although the transcriptional programs regulating these events are well studied, post-transcriptional factors functioning in this cell fate decision are mostly unknown. Here, we globally identify RNA-protein interactions and RNA secondary structure in hair and nonhair cell nuclei. This analysis reveals distinct structural and protein binding patterns across both transcriptomes, allowing identification of differential RNA binding protein (RBP) recognition sites...
April 24, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28441531/myrf-er-bound-transcription-factors-drive-c-%C3%A2-elegans-synaptic-plasticity-via-cleavage-dependent-nuclear-translocation
#13
Jun Meng, Xiaoxia Ma, Huaping Tao, Xia Jin, Daniel Witvliet, James Mitchell, Ming Zhu, Meng-Qiu Dong, Mei Zhen, Yishi Jin, Yingchuan B Qi
Synaptic refinement is a critical step in nervous system maturation, requiring a carefully timed reorganization and refinement of neuronal connections. We have identified myrf-1 and myrf-2, two C. elegans homologs of Myrf family transcription factors, as key regulators of synaptic rewiring. MYRF-1 and its paralog MYRF-2 are functionally redundant specifically in synaptic rewiring. They co-exist in the same protein complex and act cooperatively to regulate synaptic rewiring. We find that the MYRF proteins localize to the ER membrane and that they are cleaved into active N-terminal fragments, which then translocate into the nucleus to drive synaptic rewiring...
April 24, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28441492/caenorhabditis-elegans-prmt-7-and-prmt-9-are-evolutionarily-conserved-protein-arginine-methyltransferases-with-distinct-substrate-specificities
#14
Andrea Hadjikyriacou, Steven Gerard Clarke
Caenorhabditis elegans protein arginine methyltransferases PRMT-7 and PRMT-9 are two evolutionarily conserved enzymes, with distinct orthologs in plants, invertebrates, and vertebrates. Biochemical characterization of these two enzymes reveals that they share much in common with their mammalian orthologs. C. elegans PRMT-7 produces only monomethyl arginine (MMA) and preferentially methylates R-X-R motifs in a broad collection of substrates, including human histone peptides and RG-rich peptides. In addition, the activity of the PRMT-7 enzyme is dependent on temperature, the presence of metal ions, and the reducing agent dithiothreitol (DTT)...
April 25, 2017: Biochemistry
https://www.readbyqxmd.com/read/28441427/programmable-type-iii-a-crispr-cas-dna-targeting-modules
#15
H Travis Ichikawa, John C Cooper, Leja Lo, Jason Potter, Rebecca M Terns, Michael P Terns
The CRISPR-Cas systems provide invader defense in a wide variety of prokaryotes, as well as technologies for many powerful applications. The Type III-A or Csm CRISPR-Cas system is one of the most widely distributed across prokaryotic phyla, and cleaves targeted DNA and RNA molecules. In this work, we have constructed modules of Csm systems from 3 bacterial species and heterologously expressed the functional modules in E. coli. The modules include a Cas6 protein and a CRISPR locus for crRNA production, and Csm effector complex proteins...
2017: PloS One
https://www.readbyqxmd.com/read/28441409/a-hypomorphic-piga-gene-mutation-causes-severe-defects-in-neuron-development-and-susceptibility-to-complement-mediated-toxicity-in-a-human-ipsc-model
#16
Xuan Yuan, Zhe Li, Andrea C Baines, Eleni Gavriilaki, Zhaohui Ye, Zhexing Wen, Evan M Braunstein, Leslie G Biesecker, Linzhao Cheng, Xinzhong Dong, Robert A Brodsky
Mutations in genes involved in glycosylphosphatidylinositol (GPI) anchor biosynthesis underlie a group of congenital syndromes characterized by severe neurodevelopmental defects. GPI anchored proteins have diverse roles in cell adhesion, signaling, metabolism and complement regulation. Over 30 enzymes are required for GPI anchor biosynthesis and PIGA is involved in the first step of this process. A hypomorphic mutation in the X-linked PIGA gene (c.1234C>T) causes multiple congenital anomalies hypotonia seizure syndrome 2 (MCAHS2), indicating that even partial reduction of GPI anchored proteins dramatically impairs central nervous system development, but the mechanism is unclear...
2017: PloS One
https://www.readbyqxmd.com/read/28441397/correction-functional-constraint-profiling-of-a-viral-protein-reveals-discordance-of-evolutionary-conservation-and-functionality
#17
Nicholas C Wu, C Anders Olson, Yushen Du, Shuai Le, Kevin Tran, Roland Remenyi, Danyang Gong, Laith Q Al-Mawsawi, Hangfei Qi, Ting-Ting Wu, Ren Sun
[This corrects the article DOI: 10.1371/journal.pgen.1005310.].
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28441374/fever-in-patients-with-cancer
#18
Yanina Pasikhova, Steven Ludlow, Aliyah Baluch
BACKGROUND: The definition of fever is flexible and depends on the clinical context. Fever is frequently observed in patients with cancer. METHODS: Infectious and noninfectious causes of fever in patients with various oncological and hematological malignancies and the usefulness of biomarkers are discussed. RESULTS: To treat patients in a timely manner and to minimize morbidity and mortality, it is paramount that health care professionals determine the cause of fever...
April 2017: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/28441332/pregnant-sheep-in-a-farm-environment-did-not-develop-anaemia
#19
Gabrielle C Musk, Amanda James, Matthew W Kemp, Sara Ritchie, Andrew Ritchie, Michael Laurence
The aim of this study was to document the haematological profile of pregnant ewes throughout gestation. Sheep were divided into three groups (n = 8 per group): non-pregnant, singleton, or twin pregnancy. Blood samples were collected every 14 days from day 55 of gestation for haemoglobin concentration; packed cell volume; total protein; and albumin concentration. On days 55 and 125 of gestation blood was collected for trace element estimation: soluble copper and zinc; glutathione peroxidase (GSHPx); and methylmalonic acid (MMA)...
April 25, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28441214/the-osteo-odonto-keratoprosthesis
#20
Mehran Zarei-Ghanavati, Venkata Avadhanam, Alfonso Vasquez Perez, Christopher Liu
PURPOSE OF REVIEW: To describe the practice of and recent developments in the osteo-odonto-keratoprosthesis. RECENT FINDINGS: Formal psychological assessment and support have been described. A sub-aqua system for fashioning the osteo-odonto-keratoprosthesis lamina; adoption of thicker laminae; use of bisphosphonate drugs; advances in laminar imaging; and use of bone augmentation and bone morphogenetic protein have been described for prevention, detection, and management of laminar resorption...
April 24, 2017: Current Opinion in Ophthalmology
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