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https://www.readbyqxmd.com/read/27913859/complex-genetics-architecture-contributes-to-salmonella-resistance-in-acb60-mice
#1
Sean Beatty, Leïla Rached-D'Astous, Danielle Malo
Human infection with Salmonella is of global public health concern. In low- and middle-income countries, Salmonella infection is a major source of disease in terms of both mortality and morbidity, while in high-income nations, the pathogen is an ongoing threat to food security. The outcome of infection with Salmonella enterica serovar Typhimurium (Salmonella Typhimurium) in mouse models is dependent upon a coordinated and complex immune response. A panel of recombinant congenic strains (RCS) derived from the reciprocal double backcross of A/J and C57BL/6J mice has been screened for their susceptibility to Salmonella infection, and the RCS AcB60 was identified to be the most resistant strain to Salmonella infection, more resistant than the parental strain A/J...
December 2, 2016: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/27913631/cutting-edge-lymphotoxin-signaling-is-essential-for-clearance-of-salmonella-from-the-gut-lumen-and-generation-of-anti-salmonella-protective-immunity
#2
Joanna A Wroblewska, Yuan Zhang, Haidong Tang, Xiaohuan Guo, Cathryn Nagler, Yang-Xin Fu
The immunological components that control resolution of Salmonella infection and successful vaccination are poorly defined. In a model of chronic gastrointestinal infection, we observed that the lymphotoxin (LT) pathway is essential for the clearance and resolution of primary infection of attenuated Salmonella enterica Typhimurium strain SL3261 ΔaroA Using gnotobiotic mice, we show that LTβ receptor (LTβR) signaling and the microbiota are required to promote clearance of attenuated S. enterica Typhimurium from the gut lumen...
December 2, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27911082/necrotizing-and-haemorrhagic-hepatitis-and-enteritis-in-commercial-layer-pullets
#3
Yuko Sato, William L Wigle, Tsang Long Lin, Eric Gingerich, Patricia S Wakenell
This case report describes an episode of recurring severe necrotizing and haemorrhagic hepatitis and enteritis experienced in a flock of commercial layer pullets at 12 weeks of age and again at 18 weeks of age in Indiana. Pullets had been vaccinated at 10 weeks old using a trivalent Salmonella Enteritidis (SE)/Newcastle disease/infectious bronchitis oil-emulsion-inactivated vaccine. The pullets were found dead at 12 weeks with firm but friable, enlarged, haemorrhagic livers, enlarged spleens, and necrohaemorrhagic intestines...
December 2, 2016: Avian Pathology: Journal of the W.V.P.A
https://www.readbyqxmd.com/read/27910884/the-hha-tomb-toxin-antitoxin-system-shows-conditional-toxicity-and-promotes-persister-cell-formation-by-inhibiting-apoptosis-like-death-in-s-typhimurium
#4
Sangeeta Jaiswal, Prajita Paul, Chandrashekhar Padhi, Shilpa Ray, Daniel Ryan, Shantoshini Dash, Mrutyunjay Suar
Toxin-antitoxin (TA) modules are two component "addictive" genetic elements found on either plasmid or bacterial chromosome, sometimes on both. TA systems perform a wide range of functions like biofilm formation, persistence, programmed cell death, phage abortive infection etc. Salmonella has been reported to contain several such TA systems. However, the hemolysin expression modulating protein (Hha) and its adjacent uncharacterized hypothetical protein TomB (previously known as YbaJ), have not been listed as a TA module in Salmonella...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27909434/the-bacterial-two-hybrid-system-uncovers-the-involvement-of-acetylation-in-regulating-of-lrp-activity-in-salmonella-typhimurium
#5
Ran Qin, Yu Sang, Jie Ren, Qiufen Zhang, Shuxian Li, Zhongli Cui, Yu-Feng Yao
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2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27909043/an-atlas-of-human-kinase-regulation
#6
David Ochoa, Mindaugas Jonikas, Robert T Lawrence, Bachir El Debs, Joel Selkrig, Athanasios Typas, Judit Villén, Silvia Dm Santos, Pedro Beltrao
The coordinated regulation of protein kinases is a rapid mechanism that integrates diverse cues and swiftly determines appropriate cellular responses. However, our understanding of cellular decision-making has been limited by the small number of simultaneously monitored phospho-regulatory events. Here, we have estimated changes in activity in 215 human kinases in 399 conditions derived from a large compilation of phosphopeptide quantifications. This atlas identifies commonly regulated kinases as those that are central in the signaling network and defines the logic relationships between kinase pairs...
December 1, 2016: Molecular Systems Biology
https://www.readbyqxmd.com/read/27908385/the-mutagenic-assessment-of-an-electronic-cigarette-and-reference-cigarette-smoke-using-the-ames-assay-in-strains-ta98-and-ta100
#7
D Thorne, I Crooks, M Hollings, A Seymour, C Meredith, M Gaca
Salmonella typhimurium strains TA98 and TA100 were used to assess the mutagenic potential of the aerosol from a commercially available, rechargeable, closed system electronic-cigarette. Results obtained were compared to those for the mainstream smoke from a Kentucky reference (3R4F) cigarette. Two different test matrices were assessed. Aerosol generated from the e-cigarette was trapped on a Cambridge filter pad, eluted in DMSO and compared to cigarette smoke total particulate matter (TPM), which was generated in the same manner for mutagenicity assessment in the Salmonella assay...
December 2016: Mutation Research
https://www.readbyqxmd.com/read/27908268/synthesis-of-new-fluoro-benzimidazole-derivatives-as-an-approach-towards-the-discovery-of-novel-intestinal-antiseptic-drug-candidates
#8
Ulviye Acar, Begüm Nurpelin Sağlık, Yusuf Özkay, Zerrin Cantürk, Juan Bueno, Fatih Demirci
In the present study, nineteen new fluoro-benzimidazole derivatives, including nifuroxazide analogues, were synthesized by microwave-supported reactions and tested against a panel of pathogenic microorganisms consisting of resistant strains. The synthesized compounds were characterised and identified by FT-IR, 1H- and 13C-NMR, mass spectroscopy, and elemental analyses, respectively. In vitro antimicrobial and cytotoxic effects of the synthesized compounds were determined by microdilution and by [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] (MTT) assay...
December 1, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27907974/-salmonellosis-a-real-threat-for-infants
#9
Václav Musil, Lenka Krbková, Peter Mikolášek, Lukáš Homola, Adriana Braunová
Salmonella spp. are a common cause of bacterial gastroenteritis. In infants, Salmonella infection is uncommon, posing a higher risk for a severe course. The authors present a case of a 3-month-old infant with suspected Salmonella sepsis. Also discussed are the correct approach to therapy and potential errors in the treatment of the youngest age groups.
September 2016: Klinická Mikrobiologie a Infekc̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27907208/interaction-between-salmonella-and-schistosomiasis-a-review
#10
REVIEW
Amber Hsiao, Trevor Toy, Hye Jin Seo, Florian Marks
The interaction between schistosomiasis and Salmonella is a particularly important issue in Africa, where dual infection by the parasite and the bacterium are likely common. In this review, the ways in which schistosomiasis affects human biology as it relates to Salmonella are described. Those who are infected by both organisms experience reduced immunological functioning, exhibit irreversible organ damage due to prolonged schistosomiasis infection, and become latent carriers of Salmonella enterica serotypes Typhi and Paratyphi and S...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27907002/chemical-composition-an-antioxidant-cytotoxic-and-microbiological-activity-of-the-essential-oil-from-the-leaves-of-aeollanthus-suaveolens-mart-ex-spreng
#11
Rosany Lopes Martins, Ranggel Carvalho Simões, Érica de Menezes Rabelo, Ana Luzia Ferreira Farias, Alex Bruno Lobato Rodrigues, Ryan da Silva Ramos, João Batista Fernandes, Lourivaldo da Silva Santos, Sheylla Susan Moreira da Silva de Almeida
Aeollanthus suaveolens species popularly known as catinga de mulata belongs to the Lamiaceae family. In the Amazon region, it is used in folk medicine for the treatment of gastritis, convulsions of epileptic origin, stomach pain and diarrhea in the form of tea and juice. Essential oils have analgesic, anti-inflammatory, and antimicrobial activity. This study evaluated the chemical composition of the A. suaveolens essential oil, and its cytotoxic, antimicrobial and antioxidant activity on Artemia salina Leach...
2016: PloS One
https://www.readbyqxmd.com/read/27906974/in-silico-knockout-studies-of-xenophagic-capturing-of-salmonella
#12
Jennifer Scheidel, Leonie Amstein, Jörg Ackermann, Ivan Dikic, Ina Koch
The degradation of cytosol-invading pathogens by autophagy, a process known as xenophagy, is an important mechanism of the innate immune system. Inside the host, Salmonella Typhimurium invades epithelial cells and resides within a specialized intracellular compartment, the Salmonella-containing vacuole. A fraction of these bacteria does not persist inside the vacuole and enters the host cytosol. Salmonella Typhimurium that invades the host cytosol becomes a target of the autophagy machinery for degradation...
December 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/27906145/nitrobacter-sp-extract-mediated-biosynthesis-of-ag2o-nps-with-excellent-antioxidant-and-antibacterial-potential-for-biomedical-application
#13
Gopalu Karunakaran, Matheswaran Jagathambal, Alexander Gusev, Nguyen Van Minh, Evgeny Kolesnikov, Arup Ratan Mandal, Denis Kuznetsov
In this study, extracellular extract of plant growth promoting bacterium, Nitrobacter sp. is used for the bioconversion of AgNO3 (silver nitrate) into Ag2O (silver oxide nanoparticles). It is an easy, ecofriendly and single step method for Ag2O NPs synthesis. The bio-synthesized nanoparticles were characterized using different techniques. UV-Vis results showed the maximum absorbance around 450 nm. XRD result shows the particles to have faced centered cubic (fcc) crystalline nature. FTIR analysis reveals the functional groups that are involved in bioconversion such as C-N, N-H and C=O...
December 2016: IET Nanobiotechnology
https://www.readbyqxmd.com/read/27906139/myxobacteria-mediated-synthesis-of-silver-nanoparticles-and-their-impregnation-in-wrapping-paper-used-for-enhancing-shelf-life-of-apples
#14
Swati Bhople, Swapnil Gaikwad, Swapna Deshmukh, Shital Bonde, Aniket Gade, Sanjib Sen, Anna Brezinska, Hanna Dahm, Mahendra Rai
The authors report Myxobacteria virescens (M. virescens) mediated synthesis of silver nanoparticles (AgNPs) and its efficacy against Staphylococcus aureus (ATCC-33591), Salmonella typhi (ATCC-51812), Escherichia coli (E. coli) (ATCC-14948), Klebsiella pneumoniae (MTCC-4030) and Pseudomonas aeruginosa (MTCC-4673). The organism exhibiting resistance to various antibiotics showed remarkable sensitivity, when used in combination of antibiotics and AgNPs. Antimicrobial property of AgNPs is playing a significant role in medicine and food storage...
December 2016: IET Nanobiotechnology
https://www.readbyqxmd.com/read/27905092/broad-spectrum-of-antimicrobial-properties-of-commercial-wines-from-different-vitis-vinifera-l-varieties
#15
Aleksandra Radovanović, Biljana Arsić, Vladimir Radovanović, Branimir Jovančičević, Vesna Nikolić
Fifteen commercial wines produced from international and autochthonic varieties of Vitis vinifera L. cultivation of different Balkan winegrowing subregions were studied for their antimicrobial activity against six Gram-positive (Clostridium perfringens, Bacillus subtilis, Staphylococcus aureus, Listeria inocua, Sarcina lutea and Micrococcus flavus) and six Gram-negative (Escherichia coli, Pseudomonas aeruginosa, Salmonella enteritidis, Shigella sonnei, Klebsiella pneumonia and Proteus vulgaris) bacteria. The concentrations and types of phenolic compounds responsible for antibacterial activity in wines were investigated by HPLC and spectroscopic methods...
January 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/27904826/infective-abdominal-aortitis-due-to-campylobacter-fetus-bacteremia-a-case-report-and-review-of-literature
#16
Abhinav Agrawal, Rutuja R Sikachi
Infectious aortitis (IA) is a rare but life-threatening condition, and most commonly affects the abdominal aorta or thoracic aorta. Various microorganisms have been associated with infectious thoracic aortitis, most commonly Staphylococcus, Enterococcus, Streptococcus, and Salmonella species. Campylobacter fetus (C. fetus) has been seen as a cause of infective aortitis only in a few case reports. We report a rare case of infective aortitis of the abdominal aorta caused due to C. fetus bacteremia. While C. fetus infections usually occur in patients with immunosuppression, such as malignancy, or those with diabetes mellitus, but our patient was not immunocompromised...
November 2016: Intractable & Rare Diseases Research
https://www.readbyqxmd.com/read/27904402/microbiological-quality-and-variability-of-natural-microbiota-in-croatian-cheese-maturing-in-lambskin-sacks
#17
Jadranka Frece, Marija Vrdoljak, Mija Filipčić, Marko Jelić, Iva Čanak, Željko Jakopović, Jelka Pleadin, Ivana Gobin, Tibela Landeka Dragičević, Ksenija Markov
As in the traditional production of cheese in lambskin sacks raw cow's or sheep's milk is mostly used, the purpose of this study is to see how the production affects the microbiological quality of the cheese. To do that, we tested 39 samples of raw cow's and sheep's milk, curd, ripened cheese (15, 30 and 45 days) and lambskin sacks for native microbial population. Two-thirds of the milk, curd and cheese samples had higher counts of staphylococci and enterobacteria than permitted by regulations. Not a single sample had Salmonella and Listeria monocytogenes, but we did find Escherichia coli in sheep's milk and cheese, and yeast and mould in both types of milk and cheese...
June 2016: Food Technology and Biotechnology
https://www.readbyqxmd.com/read/27903420/microbiology-of-processed-edible-insect-products-results-of-a-preliminary-survey
#18
Nils Th Grabowski, Günter Klein
Little is known of the microbiology of processed insect products. The present survey analysed a total of n=38 samples of deep-fried and spiced (Acheta domesticus, Locusta migratoria, and Omphisa fuscidentalis), cooked in soy sauce ("tsukudani"; Oxya yezoensis, Vespula flaviceps, and Bombyx mori), dried (A. domesticus, L. migatoria, Alphitobius diaperinus, Tenebrio molitor, B. mori, Hermetia illucens, and Musca domestica), powdered (H. illucens, T. molitor) and other (incl. deep-frozen B. mori and honeybee pollen) insect products microbiologically (total bacterial count [TBC], Enterobacteriaceae, staphylococci, bacilli, and yeasts and moulds counts, salmonellae, Listeria monocytogenes, and Escherichia coli)...
November 9, 2016: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/27902441/biosynthesis-of-selenate-reductase-in-salmonella-enterica-critical-roles-for-the-signal-peptide-and-dmsd
#19
Katherine Connelly, Calum Stevenson, Holger Kneuper, Frank Sargent
Salmonella enterica serovar Typhimurium is a Gram negative bacterium with a flexible respiratory capability. Under anaerobic conditions, S. enterica can utilise a range of terminal electron acceptors to sustain respiratory electron transport chains, including the potentially toxic compound selenate. The S. enterica selenate reductase is a membrane-bound enzyme encoded by the ynfEFGH-dmsD operon. The active enzyme is predicted to comprise at least three subunits where YnfE is a molybdenum-containing catalytic subunit...
October 20, 2016: Microbiology
https://www.readbyqxmd.com/read/27902414/modulation-of-intestinal-barrier-function-to-ameliorate-salmonella-infection-in-mice-by-oral-administration-of-fermented-milks-produced-with-lactobacillus-plantarum-mtcc-5690-a-probiotic-strain-of-indian-gut-origin
#20
Namita Rokana, Rajbir Singh, Rashmi Hogarehalli Mallappa, Virender Kumar Batish, Sunita Grover
Probiotic Lactobacillus plantarum MTCC 5690 -a probiotic strain of Indian gut origin as such and milk formulations produced with the same were explored in this sudy as biotherapeutics by evauating their functional efficacy against Salmonella infection in mice. The efficacy of milk formulations (fermented/unfermented) of MTCC 5690 for enhancement of intestinal barrier function was determined by monitoring the permeability and histopathology of intestine. The mice fed with probiotic Dahi (PD), Fermented Probiotic Drink (FD) and Sweetened fermented probiotic drink (SFD) maintained the health and integrity of intestinal epithelium in the infected mice as compared to those fed with phosphate buffered saline, milk, unfermented probiotic milk and Dahi...
October 17, 2016: Journal of Medical Microbiology
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