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https://www.readbyqxmd.com/read/28624685/bacillus-subtilis-affects-mirnas-and-flavanoids-production-in-agrobacterium-tobacco-interaction
#1
Fahimeh Nazari, Naser Safaie, Bahram Mohammad Soltani, Masoud Shams-Bakhsh, Mohsen Sharifi
Agrobacterium tumefaciens is a very destructive plant pathogen. Selection of effective biological agents against this pathogen depends on more insight into molecular plant defence responses during the biocontrol agent-pathogen interaction. Auxin as a phytohormone is a key contributor in pathogenesis and plant defence and accumulation of auxin transport carriers are accompanied by increasing in flavonoid and miRNAs concentrations during plant interactions with bacteria. The aim of this research was molecular analysis of Bacillus subtilis (ATCC21332) biocontrol effect against A...
June 10, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28623492/recombinant-20-8-kda-protein-of-mycobacterium-avium-subsp-paratuberculosis-based-sero-diagnosis-of-paratuberculosis
#2
P P Goswami, Gokul Chand, N S Prasad, R Deb, S H Basagoudanavar
Johne's disease or paratuberculosis is a chronic infectious enteric disease of ruminants caused by the intracellular pathogen. The control of the Johne's disease is hampered by lack of specific diagnostic tests. In this study, we have cloned and expressed the N-terminal region of the locus tag Map 1637c encoding 20.8-kDa (r20.8) protein of Mycobacterium avium subsp. paratuberculosis. The recombinant protein r20.8 was expressed in high levels in Escherichia coli. The protein r20.8 was purified by single-step chromatography using Ni-NTA agarose...
July 2017: 3 Biotech
https://www.readbyqxmd.com/read/28623360/endothelial-cell-derived-extracellular-vesicles-size-dependently-exert-procoagulant-activity-detected-by-thromboelastometry
#3
Wolfgang Holnthoner, Cornelia Bonstingl, Carina Hromada, Severin Muehleder, Johannes Zipperle, Stefan Stojkovic, Heinz Redl, Johann Wojta, Herbert Schöchl, Johannes Grillari, Sylvia Weilner, Christoph J Schlimp
Endothelial cells (ECs) are major modulators of hemostasis by expressing and releasing pro- and anticoagulant mediators into the circulation. Previous studies showed that cultured ECs release procoagulant mediators into cell culture supernatants as evidenced by the reduction of viscoelastic clotting time. This effect was reversed with an anti-tissue factor antibody. Here, we aimed to investigate whether tissue factor (TF) was released by endothelial-derived extracellular vesicles (EVs) and which portion of the released vesicles displays the most prominent procoagulant properties...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28615107/-preparation-and-characterization-of-mouse-polyclonal-antibody-against-conserved-region-of-human-foxo3
#4
Lei Li, Dan Lyu
Objective To purify the recombinant protein specific to conserved region of forkhead box O3 (FOXO3) and prepare mouse anti-human FOXO3 polyclonal antibody. Methods The DNA fragment (aa290-472) encoding conserved domain of FOXO3 was amplified by PCR, and subsequently cloned into pET28a vector. Following transformation into E.coli BL21, the soluble fusion protein His-FOXO3 was induced by IPTG and purified by Ni-NTA affinity chromatography. The purified protein was used to immunize BALB/c mice to generate polyclonal antibody...
June 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28605043/typical-angina-is-associated-with-greater-coronary-endothelial-dysfunction-but-not-abnormal-vasodilatory-reserve
#5
Ahmed AlBadri, Derek Leong, C Noel Bairey Merz, Janet Wei, Eileen M Handberg, Chrisandra L Shufelt, Puja K Mehta, Michael D Nelson, Louise E Thomson, Daniel S Berman, Leslee J Shaw, Galen Cook-Wiens, Carl J Pepine
BACKGROUND: Typical angina (TA) is defined as substernal chest pain precipitated by physical exertion or emotional stress and relieved with rest or nitroglycerin. Women and elderly patients are usually have atypical symptoms both at rest and during stress, often in the setting of nonobstructive coronary artery disease (CAD). HYPOTHESIS: To further understand this, we performed subgroup analysis comparing subjects who presented with TA vs nontypical angina (NTA) using baseline data of patients with nonobstructive CAD and coronary microvascular dysfunction (CMD) enrolled in a clinical trial...
June 12, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28601563/biophysical-characterization-of-influenza-a-virions
#6
Arun Parupudi, Flaviu Gruia, Samuel A Korman, Sonia Dragulin-Otto, Kuldip Sra, Richard L Remmele, Jared S Bee
Antigenic drift of the influenza A virus requires that vaccine production is targeted to the strains circulating each year. Live-attenuated influenza A vaccine manufacturing is used to produce intact virions with the surface antigens of the circulating strains. Influenza A typically contains a large percentage (>90%) of non-infective virions. The ribonucleoprotein (RNP) content, virion structure, and aggregation are factors that are thought to have an impact on infectivity. However, these factors are difficult to study because of the intrinsic variability in virion size, shape and overall structural integrity...
June 8, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28599177/controlled-carbon-nanotube-layers-for-impedimetric-immunosensors-high-performance-label-free-detection-and-quantification-of-anti-cholera-toxin-antibody
#7
Quentin Palomar, Chantal Gondran, Michael Holzinger, Robert Marks, Serge Cosnier
An original impedimetric immunosensor was developed based on carbon nanotube (CNT) deposits with controlled thicknesses for enhanced electroactive surface areas leading to improved sensor performances. Cholera monitoring was chosen as the model immune system for this setup. These CNT deposits were characterized using confocal laser microscopy and electrochemical methods. To form the sensor device, the CNT deposits were functionalized via electrocoating of polypyrrole-nitrilotriacetic acid (poly(pyrrole-NTA)) followed by the formation of a Cu (II) complex with the NTA functions...
June 1, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28597389/enhanced-fenton-like-degradation-of-tce-in-sand-suspensions-with-magnetite-by-nta-edta-at-circumneutral-ph
#8
Na Wang, Daqing Jia, Yaoyao Jin, Sheng-Peng Sun, Qiang Ke
The present study investigated the degradation of trichloroethylene (TCE) in sand suspensions by Fenton-like reaction with magnetite (Fe3O4) in the presence of various chelators at circumneutral pH. The results showed that ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA) greatly improved the rate of TCE degradation, while [S,S]-ethylenediaminedisuccinic acid (s,s-EDDS), malonate, citrate, and phytic acid (IP6) have minimal effects on TCE degradation. Quenching tests suggested that TCE was mainly degraded by hydroxyl radical (HO(·)) attack, with about 90% inhibition on TCE degradation by the addition of HO(·) scavenger 2-propanol...
June 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28581001/structure-and-elasticity-of-composite-nanoparticle-polymer-nanoshells-hybridosomes%C3%A2
#9
F Sciortino, M Thivolle, M L Kahn, C Gaillard, S Chevance, F Gauffre
Our group recently introduced a new process to synthesize nanoparticle shells of about 100 nm, named "hybridosomes®". Here, the structure and mechanical properties of hybridosomes® made from iron oxide nanoparticles and poly(acrylic acid) are characterized using TEM, AFM and an osmotic compression technique. For the latter, the size distribution of the hybridosomes is monitored by nanoparticle tracking analysis (NTA) in the presence of poly(ethylene glycol)s of different molecular weights. It is found that the size of the hybridosomes® can be tuned from ca...
June 21, 2017: Soft Matter
https://www.readbyqxmd.com/read/28579330/new-insights-into-pradimicin-biosynthesis-revealed-by-two-o-methyltransferases
#10
Fuchao Xu, Kandy Napan, Shuwei Zhang, Tyler Gladwin, Jon Takemoto, Jixun Zhan
Pradimicins are a group of antiviral and antifungal natural products from Actinomadura hibisca. Two putative O-methyltransferase genes, pdmF and pdmT, are present in the pradimicin biosynthetic gene cluster. However, there is only one methoxy group (11-OCH3) in pradimicins. Through heterologous expression and in vitro reactions with various substrates, PdmF was characterized as the C-11 O-methyltransferase with a relatively broad substrate specificity. To probe the role of PdmT in pradimicin biosynthesis, the corresponding gene was disrupted through homologous recombination, leading to the production of pradimicinone II...
May 23, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28570826/specific-monoclonal-antibodies-recognizing-the-endogenous-chicken-high-mobility-group-box-1-protein
#11
Yurong Qu, Yuan Zhan, Shen Yang, Xusheng Qiu, Lei Tan, Yingjie Sun, Chunchun Meng, Cuiping Song, Shengqing Yu, Chan Ding
High mobility group box 1 (HMGB1) is a key member of the "danger associated molecular patterns" (DAMPs), which can localize in various compartments of the cell, and plays important roles in systemic inflammation. In the present study, monoclonal antibodies (MAbs) specifically against chicken HMGB1 were generated. The open reading frame of chicken HMGB1 was amplified by RT-PCR and cloned into the prokaryotic expression vector pET-28a to construct a recombinant plasmid pET-chHMGB1. The recombinant chicken HMGB1 protein was expressed in Escherichia coli Rosetta under IPTG induction and then purified by Ni-NTA Purification System...
June 1, 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28555885/serum-extracellular-vesicles-contain-protein-biomarkers-for-primary-sclerosing-cholangitis-and-cholangiocarcinoma
#12
Ander Arbelaiz, Mikel Azkargorta, Marcin Krawczyk, Alvaro Santos-Laso, Ainhoa Lapitz, Maria J Perugorria, Oihane Erice, Esperanza Gonzalez, Raul Jimenez-Agüero, Adelaida Lacasta, Cesar Ibarra, Alberto Sanchez-Campos, Juan P Jimeno, Frank Lammert, Piotr Milkiewicz, Marco Marzioni, Rocio I R Macias, Jose J G Marin, Tushar Patel, Gregory J Gores, Ibon Martinez, Félix Elortza, Juan M Falcon-Perez, Luis Bujanda, Jesus M Banales
Cholangiocarcinoma (CCA) includes a heterogeneous group of biliary cancers with poor prognosis. Several conditions such as primary sclerosing cholangitis (PSC) are risk factors. Non-invasive differential diagnosis between intrahepatic CCA (iCCA) and hepatocellular carcinoma (HCC) is sometimes difficult. Accurate non-invasive biomarkers for PSC, CCA or HCC are not available. In the search of novel biomarkers, serum extracellular vesicles (EV) were isolated from CCA (n=43), PSC (n=30) or HCC (n=29) patients, and healthy individuals (control, n=32), and their protein content was characterized...
May 26, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28551125/tetra-nickel-substituted-polyoxotungsate-as-an-efficient-sorbent-for-the-isolation-of-his6-tagged-proteins-from-cell-lysate
#13
Meng-Meng Wang, Qing Chen, Dan-Dan Zhang, Xu-Wei Chen, Ming-Li Chen
By virtue of the flexible structure of polyoxometalates, Ni(2+) is encapsulated into trivacant lacunary tungstophosphate ligands by the form of [Ni4] cluster to offer a tetra-nickel substituted polyoxotungsate K6Na4[Ni4(H2O)2(PW9O34)2] (Ni4P2). The Ni4P2 is then immobilized onto the surface of SiO2 nanoparticles by self-assembly under electrostatic interactions to give the product of Ni4P2@SiO2 composites. Due to the specific affinity between substituted Ni(2+) in the polyoxotungsate and the histidine residues of protein, Ni4P2@SiO2 composites exhibit highly adsorption selectivity towards histidine protein...
August 15, 2017: Talanta
https://www.readbyqxmd.com/read/28540175/cloning-and-expression-of-three-thaumatin-like-protein-genes-from-polyporus-umbellatus
#14
Mengmeng Liu, Dawei Zhang, Yongmei Xing, Shunxing Guo
Genes encoding thaumatin-like protein (TLPs) are frequently found in fungal genomes. However, information on TLP genes in Polyporus umbellatus is still limited. In this study, three TLP genes were cloned from P. umbellatus. The full-length coding sequence of PuTLP1, PuTLP2 and PuTLP3 were 768, 759 and 561 bp long, respectively, encoding for 256, 253 and 187 amino acids. Phylogenetic trees showed that P. umbellatus PuTLP1, PuTLP2 and PuTLP3 were clustered with sequences from Gloeophyllum trabeum, Trametes versicolor and Stereum hirsutum, respectively...
May 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28540060/microparticle-formation-in-peritoneal-dialysis-a-proof-of-concept-study
#15
Shareef Akbari, Rima Abou-Arkoub, Suzy Sun, Swapnil Hiremath, Arkadiy Reunov, Brendan B McCormick, Marcel Ruzicka, Dylan Burger
BACKGROUND: Injury to the mesothelial layer of the peritoneal membrane during peritoneal dialysis (PD) is implicated in loss of ultrafiltration capacity, but there are no validated biomarkers for mesothelial cell injury. Microparticles (MPs) are 0.1 to 1.0 µm membrane vesicles shed from the cell surface following injury and are sensitive markers of tissue damage. Formation of MPs in the peritoneal cavity during PD has not been reported to date. METHODS: We designed a single-center, proof of concept study to assess whether peritoneal solution exposure induces formation of mesothelial MPs suggestive of PD membrane injury...
2017: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/28538167/understanding-the-bioavailability-and-sequestration-of-different-metal-cations-in-the-presence-of-a-biodegradable-chelant-mgda-in-biological-fluids-and-natural-waters
#16
Clemente Bretti, Rosalia Maria Cigala, Concetta De Stefano, Gabriele Lando, Silvio Sammartano
Thermodynamic information about the metal-ligand interaction between Fe(3+), Zn(2+), Cu(2+) and Sn(2+), and a biodegradable ligand as MGDA is reported. The speciation scheme was obtained by means of potentiometric measurements and isothermal titration calorimetry (to determine enthalpy changes) in NaCl medium. The formation of the ML and MLOH species was evidenced for all the metal cations, and for Fe(3+) also the ML2 and ML(OH)2 were found. The relative stability, for the ML species, follows the order: Sn(2+) > Fe(3+) > Cu(2+) > Zn(2+)...
May 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28531338/placental-exosomes-as-early-biomarker-of-preeclampsia-potential-role-of-exosomal-micrornas-across-gestation
#17
Carlos Salomon, Dominic Guanzon, Katherin Scholz-Romero, Sherri Longo, Paula Correa, Sebastian E Illanes, Gregory E Rice
Context: There is a need to develop strategies for early prediction of patients who will develop preeclampsia (PE), in order to establish preventive strategies to reduce the prevalence and severity of the disease and their associated complications. Objective: The objective of this study was to investigate whether exosomes and their microRNA cargo present in maternal circulation can be used as early biomarker for PE. Design, Setting, Patients, and Interventions: A retrospective stratified study design was used to quantify total exosomes (EXO) and placenta-derived exosomes (PdE) present in maternal plasma of normal (n=32 per time point) and PE (n=15 per time point) pregnancies...
May 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28526203/quantitative-evaluation-of-inhibitory-effect-of-various-substances-on-anaerobic-ammonia-oxidation-anammox
#18
Tomotaka Nakamura, Yuhki Harigaya, Yuya Kimura, Megumi Kuroiwa, Yuhri Kurata, Kazuichi Isaka, Yuichi Suwa
The inhibitory effect of 20 substances of various chemical species on the anaerobic ammonia oxidation (anammox) activity of an enrichment culture, predominated by Candidatus Brocadia, was determined systematically by using a (15)N tracer technique. The initial anammox rate was determined during first 25 min with a small-scale anaerobic batch incubation supplemented with possible inhibitors. Although Cu(2+) and Mn(2+) did not inhibit anammox, the remaining 18 substances [Ni(2+), Zn(2+), Co(2+), [Formula: see text] , Fe(2+), 4 amines, ethylenediaminetetraacetic acid (EDTA), ethylenediamine-N,N'-bis (2-hydroxyphenylacetic acid) (EDDHA), citric acid, nitrilotriacetic acid (NTA), N,N-dimethylacetamide (DMA), 1,4-dioxane, dimethyl sulfoxide (DMSO), N,N-dimethylformamide (DMF) and tetrahydrofuran (THF)] were inhibitory...
May 16, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28523920/expression-of-bovine-rotavirus-vp8-and-preparation-of-igy-antibodies-against-recombinant-vp8
#19
H S Kim, B Lee, S Y Han, Y T Jung
Group A rotavirus is the leading cause of acute gastroenteritis in cattle and swine. Although, vaccination against this virus is an effective strategy for prevention, additional strategy to control disease is necessary. Egg yolk immunoglobulin (IgY)-based passive immunization could be a better option in preventing this disease. Bovine rotavirus (BRV) is group A rotavirus and possesses a genome of 11 segments of double-stranded RNA. The outer layer of capsid is composed of two proteins (VP7 and VP4), which induce virus neutralizing antibodies...
2017: Acta Virologica
https://www.readbyqxmd.com/read/28522197/identification-of-the-upstream-4-chlorophenol-biodegradation-pathway-using-a-recombinant-monooxygenase-from-arthrobacter-chlorophenolicus-a6
#20
Su Yeon Cho, Oh Sung Kwean, Jun Won Yang, Wooyoun Cho, Seonyeong Kwak, Sungyoon Park, Yejee Lim, Han S Kim
This study aimed to clarify the initial 4-chlorophenol (4-CP) biodegradation pathway promoted by a two-component flavin-diffusible monooxygenase (TC-FDM) consisting of CphC-I and CphB contained in Arthrobacter chlorophenolicus A6 and the decomposition function of CphC-I. The TC-FDM genes were cloned from A. chlorophenolicus A6, and the corresponding enzymes were overexpressed. Since CphB was expressed in an insoluble form, Fre, a flavin reductase obtained from Escherichia coli, was used. These enzymes were purified using Ni(2+)-NTA resin...
May 4, 2017: Bioresource Technology
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