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https://www.readbyqxmd.com/read/28933277/identification-of-an-interaction-between-a-histidine-kinase-response-regulator-hybrid-protein-and-2-keto-3-deoxy-d-manno-octulosonate-8-phosphate-synthase-in-gluconobacter-oxydans
#1
Cuijuan Yuan, Yangchen Lin, Yushu Ma, Dongzhi Wei
The histidine kinase response regulator hybrid protein was identified as a member of two-component signaling systems in Gluconobacter oxydans by gene annotation, but the function of this protein remains unknown. In this research, its specific interaction with a 2-keto-3-deoxy-D-manno-octulosonate-8-phosphate synthase was screened by yeast two-hybrid assay. The interaction between the two proteins was further identified by GST pull-down assay and bimolecular fluorescence complementation assay in vitro and in vivo, respectively...
September 19, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28904244/tracheobronchopathia-osteochondroplastica-in-recurrent-retrosternal-goiter-surgical-management
#2
Francesco Quaglino, Enrico Mazza, Mauro Navarra, Nicola Palestini, Valentina Marchese, Riccardo Lemini, Francesca Talarico, Emilpaolo Manno
Tracheobronchopathia osteochondroplastica (TPO) is a rare pathology characterized by a progressive segmentary stenosis of the respiratory tract due to proliferation of osteocartilagineous nodules in the lumen of the distal part of the trachea and large bronchial trunks. Prognosis is usually benign, but some cases with an acute progression and a lethal outcome have been described. Clinical presentation is non specific, the chest x-ray is generally normal and there are not typical radiological signs of suspicion: diagnosis of TPO is usually incidental...
September 4, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28891435/ninety-day-local-tolerability-and-toxicity-study-of-nd0612-a-novel-formulation-of-levodopa-carbidopa-administered-by-subcutaneous-continuous-infusion-in-minipigs
#3
Yuval Ramot, Abraham Nyska, Robert R Maronpot, Ronit Shaltiel-Karyo, Yonit Tsarfati, Rosa Anna Manno, Giuseppe Sacco, Oron Yacoby-Zeevi
A 90-day study in Göttingen minipigs was conducted to test the local tolerability and systemic toxicity of ND0612, a novel aqueous solution of carbidopa (CD)/levodopa (LD) intended for the treatment of Parkinson's disease by continuous subcutaneous administration using a discrete infusion pump. To evaluate tissue site reactions, we used a unique study design involving multiple infusion sites to evaluate the effect of dose per site (270/63, 360/45, and 360/84 mg LD/CD), volume of infusion per site (4.5 and 6 ml per site), formulation concentration (60/14 and 60/7...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28889208/detection-of-human-antibodies-binding-with-smooth-and-rough-lpss-from-proteus-mirabilis-o3-strains-s1959-r110-r45
#4
J Gleńska-Olender, K Durlik, I Konieczna, P Kowalska, J Gawęda, W Kaca
Bacteria of the genus Proteus of the family Enterobacteriaceae are facultative human pathogens responsible mainly for urinary tract and wound infections, bacteremia and the development of rheumatoid arthritis (RA). We have analyzed and compared by ELISA the titer of antibodies in plasmas of healthy individuals and in sera of rheumatoid arthritis patients recognizing a potential host cross-reactive epitope (lysine-galacturonic acid epitopes) present in Proteus lipopolysaccharide (LPS). In our experiments LPSs isolated from two mutants of smooth Proteus mirabilis 1959 (O3), i...
September 9, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28877472/alpk1-and-tifa-dependent-innate-immune-response-triggered-by-the-helicobacter-pylori-type-iv-secretion-system
#5
Stephanie Zimmermann, Lennart Pfannkuch, Munir A Al-Zeer, Sina Bartfeld, Manuel Koch, Jianping Liu, Cindy Rechner, Meike Soerensen, Olga Sokolova, Alla Zamyatina, Paul Kosma, André P Mäurer, Frithjof Glowinski, Klaus-Peter Pleissner, Monika Schmid, Volker Brinkmann, Alexander Karlas, Michael Naumann, Marion Rother, Nikolaus Machuy, Thomas F Meyer
Activation of transcription factor NF-κB is a hallmark of infection with the gastric pathogen Helicobacter pylori, associated with inflammation and carcinogenesis. Genome-wide RNAi screening revealed numerous host factors involved in H. pylori-, but not IL-1β- and TNF-α-dependent NF-κB regulation. Pathway analysis including CRISPR/Cas9-knockout and recombinant protein technology, immunofluorescence microscopy, immunoblotting, mass spectrometry, and mutant H. pylori strains identified the H. pylori metabolite D-glycero-β-D-manno-heptose 1,7-bisphosphate (βHBP) as a cagPAI type IV secretion system (T4SS)-dependent effector of NF-κB activation in infected cells...
September 5, 2017: Cell Reports
https://www.readbyqxmd.com/read/28874446/characterization-of-two-novel-lipopolysaccharide-phosphoethanolamine-transferases-in-pasteurella-multocida-and-their-role-in-resistance-to-cathelicidin-2
#6
Marina Harper, Amy Wright, Frank St Michael, Jianjun Li, Deanna Deveson Lucas, Mark Ford, Ben Adler, Andrew D Cox, John D Boyce
The lipopolysaccharide (LPS) produced by the Gram-negative bacterial pathogen Pasteurella multocida has phosphoethanolamine (PEtn) residues attached to lipid A, 3-deoxy-D-manno-octulosonic acid (Kdo), heptose and galactose. In this study, we show that PEtn is transferred to lipid A by the P. multocida EptA homologue, PetL, and is transferred to galactose by a novel PEtn transferase that is unique to P. multocida called PetG. Transcriptomic analyses indicated that petL expression was positively regulated by the global regulator Fis and negatively regulated by an Hfq-dependent small RNA...
September 5, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28866079/alternate-synthesis-to-d-glycero-%C3%AE-d-manno-heptose-1-7-biphosphate
#7
Janelle Sauvageau, Milan Bhasin, Cynthia X Guo, Itunuoluwa A Adekoya, Scott D Gray-Owen, Stefan Oscarson, Lorenzo Guazzelli, Andrew Cox
d-glycero-β-d-manno-heptose 1,7-biphosphate (HBP) is an enzymatic intermediate in the biosynthesis of the heptose component of lipopolysaccharide (LPS), and was recently revealed to be a pathogen-associated molecular pattern (PAMP) that allows detection of Gram-negative bacteria by the mammalian immune system. Cellular detection of HBP depends upon its stimulation of a cascade that leads to the phosphorylation and assembly of the TRAF-interacting with forkhead-associated domain protein A (TIFA), which activates the transcription factor NF-κB...
August 24, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28851249/bacterial-pneumonia-in-patients-with-liver-cirrhosis-with-or-without-hiv-co-infection-a-possible-definition-of-antibiotic-prophylaxis-associated-pneumonia-apap
#8
Gianluca Cuomo, Giuseppina Brancaccio, Gianfranca Stornaiuolo, Daniela Manno, Giuseppe L Gaeta, Cristina Mussini, Massimo Puoti, Giovanni B Gaeta
Introducion: Bacterial infections frequently complicate liver cirrhosis. The aim of this study was to identify risk factors and clinical impact of bacterial pneumonia in patients with cirrhosis. MATERIALS AND METHODS: Bacterial infection prevalence study: consecutive patients with cirrhosis were enroled over a six-month period in 13 Italian centres. Pneumonia and other infections were diagnosed by standard methods. Pneumonia study: cirrhotic patients with pneumonia were enroled for an additional six-month period and HIV-positive patients were included...
August 29, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28809998/temporal-association-of-herpes-zoster-eruption-post-aminolevulinic-acid-hydrochloride-photodynamic-therapy-for-actinic-keratoses
#9
Katie Manno, Joel L Cohen
<p>Herpes zoster is a common and painful disease caused by the reactivation of the varicella-zoster virus with a higher incidence and severity associated with increasing age as well as compromised immune status. Acute inciting events for this eruption are not always known, but can include illness, stress, and mechanical injury. Photodynamic therapy (PDT) is a widely used treatment modality for precancerous skin lesions that has not been previously associated with provoking a herpes zoster outbreak. We present a case of herpes zoster eruption occurring after PDT for actinic keratoses in a patient with Non-Hodgkin Lymphoma (NHL)...
August 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28804670/synthesis-and-characterization-of-mixed-iron-manganese-oxide-nanoparticles-and-their-application-for-efficient-nickel-ion-removal-from-aqueous-samples
#10
Alessandro Buccolieri, Antonio Serra, Giuseppe Maruccio, Anna Grazia Monteduro, Sanosh Kunjalukkal Padmanabhan, Antonio Licciulli, Valentina Bonfrate, Luca Salvatore, Daniela Manno, Lucio Calcagnile, Gabriele Giancane
Mixed iron-manganese oxide nanoparticles, synthesized by a simple procedure, were used to remove nickel ion from aqueous solutions. Nanostructures, prepared by using different weight percents of manganese, were characterized by transmission electron microscopy, selected area diffraction, X-ray diffraction, Raman spectroscopy, and vibrating sample magnetometry. Adsorption/desorption isotherm curves demonstrated that manganese inclusions enhance the specific surface area three times and the pores volume ten times...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/28794950/structure-of-the-lipopolysaccharide-from-the-bradyrhizobium-sp-ors285-rfal-mutant-strain
#11
Flaviana Di Lorenzo, Angelo Palmigiano, Katarzyna A Duda, Mateusz Pallach, Nicolas Busset, Luisa Sturiale, Eric Giraud, Domenico Garozzo, Antonio Molinaro, Alba Silipo
The importance of the outer membrane and of its main constituent, lipopolysaccharide, in the symbiosis between rhizobia and leguminous host plants has been well studied. Here, the first complete structural characterization of the entire lipopolysaccharide from an O-chain-deficient Bradyrhizobium ORS285 rfaL mutant is achieved by a combination of chemical analysis, NMR spectroscopy, MALDI MS and MS/MS. The lipid A structure is shown to be consistent with previously reported Bradyrhizobium lipid A, that is, a heterogeneous blend of penta- to hepta-acylated species carrying a nonstoichiometric hopanoid unit and possessing very-long-chain fatty acids ranging from 26:0(25-OH) to 32:0(31-OH)...
August 2017: ChemistryOpen
https://www.readbyqxmd.com/read/28789528/carbene-mediated-quaternarization-of-the-anomeric-position-of-carbohydrates-synthesis-of-allylic-ketopyranosides-access-to-the-missing-%C3%AE-gluco-and-%C3%AE-manno-stereoisomers-and-preparation-of-quaternary-2-deoxy-2-acetamido-sugars
#12
Kévin Mébarki, Marine Gavel, Floriane Heis, Antoine Yvan Philippe Joosten, Thomas Lecourt
Following our work on the C-H functionalization of carbohydrates by the 1,5 insertion of metal-carbenes, we report herein the robust and scalable conversion of sugar γ-lactones into highly valuable glycosides having a quaternary anomeric position substituted by an allyl chain ready for further functionalization. A divergent synthetic approach furthermore provided a straightforward access to ketopyranosides with a large chemo- and stereodiversity at position 2.
August 22, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28772327/endoscopic-retrograde-cholangiography-after-endoscopic-ultrasound-related-duodenal-perforation-keep-calm-use-over-the-scope-clip-and-carry-on
#13
Paola Soriani, Vincenzo Giorgio Mirante, Carmelo Barbera, Giuseppe Grande, Lucia Miglioli, Mauro Manno
No abstract text is available yet for this article.
August 3, 2017: Endoscopy
https://www.readbyqxmd.com/read/28768184/cross-linked-enzyme-aggregates-cleas-and-magnetic-nanocomposite-grafted-cleas-of-gh26-endo-%C3%AE-1-4-mannanase-improved-activity-stability-and-reusability
#14
Deepesh Panwar, Gaurav S Kaira, Mukesh Kapoor
A comparative study on immobilization of recombinant endo-β-1,4-mannanase (ManB-1601), using cross-linked aggregated form (MB-C) and novel chitosan magnetic nanocomposites of MB-C (MB-Mag-C) was carried out. FT-IR and Raman spectroscopy were used to confirm the surface modifications while, scanning electron and atomic force microscopy were performed to demonstrate the surface topology and magnetic nature of MB-C and MB-Mag-C. Among MB-C and MB-Mag-C, the former showed better activity and stability in broad range of pH, thermo-stability and kinetic parameters while, the latter showed higher temperature optima and solvent stability...
July 30, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28756198/high-level-expression-of-%C3%AE-mannanase-rmman5a-in-pichia-pastoris-for-partially-hydrolyzed-guar-gum-production
#15
Yan-Xiao Li, Ping Yi, Nan-Nan Wang, Jun Liu, Xue-Qiang Liu, Qiao-Juan Yan, Zheng-Qiang Jiang
Partially hydrolyzed guar gum (PHGG), an important supplemental dietary fiber, has been used as food ingredient in many industries. In this study, a novel β-mannanase gene (RmMan5A) from Rhizomucor miehei was successfully expressed in Pichia pastoris and subjected for PHGG production. Enzyme activity of fermentation supernatant reached 85,200UmL(-1) after 168h high cell density fermentation. The purified RmMan5A exhibited the highest enzyme activity at pH 7.0 and 65°C. RmMan5A was then employed for guar gum hydrolysis and PHGG obtained demonstrated a weight-average molecular weight (Mw) of 2...
July 26, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28747450/magnesium-hemostasis-and-outcomes-in-patients-with-intracerebral-hemorrhage
#16
Eric M Liotta, Shyam Prabhakaran, Rajbeer S Sangha, Robin A Bush, Alan E Long, Stephen A Trevick, Matthew B Potts, Babak S Jahromi, Minjee Kim, Edward M Manno, Farzaneh A Sorond, Andrew M Naidech, Matthew B Maas
OBJECTIVE: We tested the hypothesis that admission serum magnesium levels are associated with hematoma volume, hematoma growth, and functional outcomes in patients with intracerebral hemorrhage (ICH). METHODS: Patients presenting with spontaneous ICH were enrolled in an observational cohort study that prospectively collected demographic, clinical, laboratory, radiographic, and outcome data. We performed univariate and adjusted multivariate analyses to assess for associations between serum magnesium levels and initial hematoma volume, final hematoma volume, and in-hospital hematoma growth as radiographic measures of hemostasis, and functional outcome measured by the modified Rankin Scale (mRS) at 3 months...
August 22, 2017: Neurology
https://www.readbyqxmd.com/read/28730566/acute-esophageal-necrosis-black-esophagus-a-case-report-and-literature-review
#17
Valerio Manno, Nicola Lentini, Antonio Chirico, Maria Perticone, Luigi Anastasio
No abstract text is available yet for this article.
July 21, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28712957/secretory-expression-of-%C3%AE-mannanase-from-bacillus-circulans-nt-6-7-in-lactobacillus-plantarum
#18
Kwankanit Intaratrakul, Sunee Nitisinprasert, Thu-Ha Nguyen, Dietmar Haltrich, Suttipun Keawsompong
The β-mannanase gene of Bacillus circulans NT 6.7 was successfully cloned in Lactobacillus plantarum WCFS1 using the pSIP403 expression vector and secreted to the supernatant rather than accumulated in the cells. The highest activity was achieved by controlling the pH at 6 during cultivation. Maximum mannanase activities detected in the supernatant and cell-free extract of 200 ml MRS broth were 8.2 and 0.86 U/ml, respectively. Enzyme activity in the supernatant increased to 27 U/ml by fermentation in a 5-L bioreactor with automatic pH control...
November 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28654005/an-integrated-approach-for-the-environmental-characterization-of-a-wide-potentially-contaminated-area-in-southern-italy
#19
Daniela Ducci, Stefano Albanese, Lorenzo Boccia, Egidio Celentano, Elena Cervelli, Alfonso Corniello, Anna Crispo, Benedetto De Vivo, Paolo Iodice, Carmela Langella, Annamaria Lima, Maurizio Manno, Mario Palladino, Stefania Pindozzi, Marina Rigillo, Nunzio Romano, Mariangela Sellerino, Adolfo Senatore, Giuseppe Speranza, Nunzio Fiorentino, Massimo Fagnano
This paper deals with the environmental characterization of a large and densely populated area, with a poor reputation for contamination, considering the contribution of environmental features (air, soil, soil hydraulic and groundwater) and the potential effects on human health. The use of Geographic Information System (GIS) has made possible a georeferenced inventory and, by overlaying environmental information, an operational synthesis of comprehensive environmental conditions. The cumulative effects on environmental features were evaluated, taking into account superposition effects, by means of the Spatial MultiCriteria Decision Analysis (S-MCDA)...
June 27, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28646448/purification-of-the-exopolysaccharide-produced-by-alteromonas-infernus-identification-of-endotoxins-and-effective-process-to-remove-them
#20
Alicia Grivaud-Le Du, Agata Zykwinska, Corinne Sinquin, Jacqueline Ratiskol, Pierre Weiss, Claire Vinatier, Jérôme Guicheux, Christine Delbarre-Ladrat, Sylvia Colliec-Jouault
Alteromonas infernus bacterium isolated from deep-sea hydrothermal vents can produce by fermentation a high molecular weight exopolysaccharide (EPS) called GY785. This EPS described as a new source of glycosaminoglycan-like molecule presents a great potential for pharmaceutical and biotechnological applications. However, this unusual EPS is secreted by a Gram-negative bacterium and can be therefore contaminated by endotoxins, in particular the lipopolysaccharides (LPS). Biochemical and chemical analyses of the LPS extracted from A...
June 23, 2017: Applied Microbiology and Biotechnology
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