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https://www.readbyqxmd.com/read/28735356/evaluation-of-anthelmintic-antimicrobial-and-antioxidant-activity-of-chenopodium-album
#1
Bashir A Lone, M Z Chishti, Fayaz Ahmad Bhat, Hidayatullah Tak, Suhaib A Bandh, Abida Khan
The objective of this study was to evaluate the anthelmintic, antimicrobial and antioxidant activities of Chenopodium album against gastrointestinal nematodes of sheep and some pathogenic microbes. A worm motility inhibition assay was used for in vitro study, and a faecal egg count reduction assay was used for an in vivo study. Various concentrations ranging from 100 to 500 μg/ml of the extract were subjected to antimicrobial screening by disc diffusion method against four selected bacterial (Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas multocida and Escherichia coli) and two fungal (Aspergillus flavus and Candida albicans) strains in order to estimate the medicinal potential of the herb...
July 22, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28735325/characterization-of-endolithic-culturable-microbial-communities-in-carbonate-rocks-from-a-typical-karst-canyon-in-guizhou-china
#2
Yuan Tang, Jian-Zhong Cheng, Bin Lian
The endolithic environment is a ubiquitous habitat for microorganisms and a critical interface between biology and geology. In this study, a culture-based method and the phylogenetic analysis based on 16S rRNA and internal transcribed spacer (ITS) sequences were used to investigate the diversity of endolithic bacteria and fungi in two main types of carbonate rocks (namely dolomite and limestone) from Nanjiang Canyon in Guizhou karst area, China. The results of bacterial diversity indicated that all bacteria isolated from dolomite and limestone rocks were divided into 4 bacterial groups, including Proteobacteria, Actinobacteria, Firmicutes and Bacteroidetes...
January 2, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735315/the-diversity-growth-promoting-abilities-and-anti-microbial-activities-of-bacteria-isolated-from-the-fruiting-body-of-agaricus-bisporus
#3
Quanju Xiang, Lihua Luo, Yuhuan Liang, Qiang Chen, Xiaoping Zhang, Yunfu Gu
Agaricus bisporus plays an important role in ecological processes and is one of the most widely cultivated mushrooms worldwide. Mushroom growth-promoting bacteria have been isolated from casing soil and compost, but microorganisms in the fruiting body have received only a little attention. To get an overview of phylogenetic diversity of microorganisms in the fruiting body of A. bisporus, as well as to screen antimicrobial and mushroom growth-promoting strains, and eventually intensify mushroom production, we isolated and characterized microorganisms from the fruiting body of A...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735314/gene-expression-during-btex-biodegradation-by-a-microbial-consortium-acclimatized-to-unleaded-gasoline-and-a-pseudomonas-putida-strain-hm346961-isolated-from-it
#4
Jesus A Morlett-Chavez, Jose A Ascacio-Martinez, William E Haskins, Karim Acuña-Askar, Hugo A Barrera-Saldaña
Pseudomonas putida strain (HM346961) was isolated from a consortium of bacteria acclimatized to unleaded gasoline-contaminated water. The consortium can efficiently remove benzene, toluene, ethylbenzene and xylene (BTEX) isomers, and a similar capability was observed with the P. putida strain. Proteome of this strain showed certain similarities with that of other strains exposed to the hydrocarbon compounds. Furthermore, the toluene di-oxygenase (tod) gene was up-regulated in P. putida strain when exposed to toluene, ethylbenzene, xylene, and BTEX...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735307/influence-of-pseudomonas-and-bacillus-strains-isolated-from-lolium-perenne-rhizospheric-soil-in-vojvodina-serbia-on-planth-growth-and-soil-microbial-communities
#5
Stamenov R Dragana, Simonida Đurić, Timea I Hajnal Jafari, Snezana Anđelković
The aim of this study was the isolation of Pseudomonas sp. and Bacillus sp. strains from rhizospheric soil and monitoring the impact of two isolates denoted as P12 (Pseudomonas sp.) and B1 (Bacillus sp.) on the parameters of English ryegrass (Lolium perenne) yield and activity of the soil microbial communities. During 2012-2014, a plot experiment was set up following the randomized block system. Better effect on the plant growth was recorded with the use of Pseudomonas sp. P12 isolate than with Bacillus sp...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735230/granulometry-microbial-composition-and-biological-activity-of-dusts-collected-in-french-dairy-farms
#6
Hugo Pfister, Claudie Morzadec, Pierre Le Cann, Laurent Madec, Valérie Lecureur, Martine Chouvet, Stéphane Jouneau, Laurent Vernhet
BACKGROUND: Dairy working increases the prevalence of lower airway respiratory diseases, especially COPD and asthma. Epidemiological studies have reported that chronic inhalation of organic dusts released during specific daily tasks could represent a major risk factor for development of these pathologies in dairy workers. Knowledge on size, nature and biological activity of such organic dusts remain however limited. OBJECTIVE: To compare size distribution, microbial composition and cellular effects of dusts liberated by the spreading of straw bedding in five French dairy farms located in Brittany...
July 20, 2017: Environmental Research
https://www.readbyqxmd.com/read/28735046/ceftolozane-tazobactam-activity-against-drug-resistant-enterobacteriaceae-and-pseudomonas-aeruginosa-causing-healthcare-associated-infections-in-australia-and-new-zealand-report-from-an-antimicrobial-surveillance-program-2013-2015
#7
M A Pfaller, D Shortridge, H S Sader, R K Flamm, M Castaneheira
OBJECTIVES: To evaluate the in vitro activity of ceftolozane-tazobactam and comparator agents tested against isolates of Enterobacteriaceae and Pseudomonas aeruginosa from patients in Australia and New Zealand with healthcare-associated infection. METHODS: A total of 1,459 gram-negative organisms (440P. aeruginosa and 1,019 Enterobacteriaceae) were consecutively collected from 11 medical centers located in Australia and New Zealand. The organisms were tested for susceptibility by broth microdilution methods as described by the CLSI M07-A10 document and the results interpreted according to EUCAST and CLSI breakpoint criteria...
July 19, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28734695/response-of-the-bacterial-community-in-an-on-farm-biopurification-system-to-which-diverse-pesticides-are-introduced-over-an-agricultural-season
#8
Peter N Holmsgaard, Simone Dealtry, Vincent Dunon, Holger Heuer, Lars H Hansen, Dirk Springael, Kornelia Smalla, Leise Riber, Søren J Sørensen
A biopurification system (BPS) is used on-farm to clean pesticide-contaminated wastewater. Due to high pesticide loads, a BPS represents a hot spot for the proliferation and selection as well as the genetic adaptation of discrete pesticide degrading microorganisms. However, while considerable knowledge exists on the biodegradation of specific pesticides in BPSs, the bacterial community composition of these systems has hardly been explored. In this work, the Shannon diversity, the richness and the composition of the bacterial community within an operational BPS receiving wastewater contaminated with various pesticides was, for the first time, elucidated over the course of an agricultural season, using DGGE profiling and pyrosequencing of 16S rRNA gene fragments amplified from total community DNA...
July 19, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28734213/enhanced-cadmium-phytoremediation-of-glycine-max-l-through-bioaugmentation-of-cadmium-resistant-bacteria-assisted-by-biostimulation
#9
Pongsarun Rojjanateeranaj, Chirawee Sangthong, Benjaphorn Prapagdee
This study examined the potential of three strains of cadmium-resistant bacteria, including Micrococcus sp., Pseudomonas sp. and Arthrobacter sp., to promote root elongation of Glycine max L. seedlings, soil cadmium solubility and cadmium phytoremediation in G. max L. planted in soil highly polluted with cadmium with and without nutrient biostimulation. Micrococcus sp. promoted root length in G. max L. seedlings under toxic cadmium conditions. Soil inoculation with Arthrobacter sp. increased the bioavailable fraction of soil cadmium, particularly in soil amended with a C:N ratio of 20:1...
July 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28733908/assessment-of-cultivable-oral-bacterial-flora-from-important-venomous-snakes-of-india-and-their-antibiotic-susceptibilities
#10
Innus K Shaikh, Prashant P Dixit, Balasaheb S Pawade, Mugdha Potnis-Lele, Babasaheb P Kurhe
Snakebite is a common, frequently devastating, occupational, socio-economic hazard, and it has a great impact on the rural population of India. Snakebite is a major cause of the human morbidity and mortality since ancient times, as it not only affects the victim by systemic envenomation but also by wound infections originating from deadly pathogenic microorganisms from the oral cavity of the offending snake. The pathogens from the oral cavity of the snake tend to initiate an infection, resulting in gas gangrene, soft tissue necrosis, and permanent physical disabilities...
July 21, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28733718/antimicrobial-resistance-in-the-next-30%C3%A2-years-humankind-bugs-and-drugs-a-visionary-approach
#11
REVIEW
Matteo Bassetti, Garyphallia Poulakou, Etienne Ruppe, Emilio Bouza, Sebastian J Van Hal, Adrian Brink
PURPOSE: To describe the current standards of care and major recent advances with regard to antimicrobial resistance (AMR) and to give a prospective overview for the next 30 years in this field. METHODS: Review of medical literature and expert opinion were used in the development of this review. RESULTS: There is undoubtedly a large clinical and public health burden associated with AMR in ICU, but it is challenging to quantify the associated excess morbidity and mortality...
July 21, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28733420/sg2-type-r2r3-myb-transcription-factor-myb15-controls-defense-induced-lignification-and-basal-immunity-in-arabidopsis
#12
William R Chezem, Altamash Memon, Fu-Shuang Li, Jing-Ke Weng, Nicole Kho Clay
Lignification of cell wall appositions is a conserved basal defense mechanism in the plant innate immune response. However, the genetic pathway controlling defense-induced lignification remains unknown. Here, we demonstrate the Arabidopsis thaliana SG2-type R2R3-MYB transcription factor MYB15 as a regulator of defense-induced lignification and basal immunity. Loss of MYB15 reduces the content but not the composition of defense-induced lignin, whereas constitutive expression of MYB15 increases lignin content independently of immune activation...
July 21, 2017: Plant Cell
https://www.readbyqxmd.com/read/28733289/an-enterotoxin-like-binary-protein-from-pseudomonas-protegens-with-potent-nematicidal-activity
#13
Jun-Zhi Wei, Daniel L Siehl, Zhenglin Hou, Barbara Rosen, Jarred Oral, Christopher G Taylor, Gusui Wu
Soil microbes are a major food source for free-living soil nematodes. It is known that certain soil bacteria have evolved systems to combat predation. We identified the nematode-antagonistic Pseudomonas protegens strain 15G2 from screening of microbes. Through protein purification we identified a binary protein, designated as Pp-ANP, that is responsible for the nematicidal activity. This binary protein inhibits Caenorhabditis elegans growth and development by arresting larvae at L1 stage and killing older staged worms...
July 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28733285/transcriptional-modulation-of-transport-and-metabolism-associated-gene-clusters-leading-to-utilization-of-benzoate-in-preference-to-glucose-in-pseudomonas-putida-csv86
#14
Alpa Choudhary, Arnab Modak, Shree K Apte, Prashant S Phale
The effective elimination of xenobiotic pollutants from the environment can be achieved by efficient degradation by microorganisms even in the presence of sugars or organic acids. Pseudomonas putida CSV86 displays a unique property to utilize aromatic compounds prior to glucose. The draft genome and transcription analyses revealed that glucose uptake and benzoate transport and metabolism genes are clustered at glc and ben loci, respectively, as two distinct operons. When grown on glucose+benzoate, CSV86 displayed significantly higher expression of ben locus in the first- and glc locus in the second-log phase...
July 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28733280/construction-and-optimization-of-a-heterologous-pathway-for-protocatechuate-catabolism-in-escherichia-coli-enables-bioconversion-of-model-aromatic-compounds
#15
Sonya M Clarkson, Richard J Giannone, Donna M Kridelbaugh, James G Elkins, Adam M Guss, Joshua K Michener
The production of biofuels from lignocellulose yields a substantial lignin byproduct stream that currently has few applications. Biological conversion of lignin-derived compounds into chemicals and fuels has the potential to improve the economics of lignocellulose-derived biofuels, but few microbes are able both to catabolize lignin-derived aromatic compounds and generate valuable products. While Escherichia coli has been engineered to produce a variety of fuels and chemicals, it is incapable of catabolizing most aromatic compounds...
July 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28733150/seven-new-lignan-glycosides-from-the-branches-of-alangium-kurzii-craib-var-laxifolium
#16
Jie Ren, Yang-Guo Xie, Ying-Ying Huang, Sheng-Lan Zhu, Shi-Kai Yan, Hui-Zi Jin, Wei-Dong Zhang
Seven new lignan glycosides (1-3, 8-10, and 14) and 17 known compounds were isolated from the branches of Alangium kurzii Craib var. laxifolium. Their structures were established by spectroscopic analysis and circular dichroism (CD) and X-ray analysis. The isolated compounds were evaluated for their antibacterial activities against Staphylococcus aureus CI1011, Streptococcus suis CI1608, Salmonella gallinarum CI0912, Enterococcus faecalis CI1304, Aeromonas hydrophila CI1008, Escherichia coli CI151012, Vibrio parahaemolyticus CI150506, Klebsiella pneumoniae CI131216, Pseudomonas aeruginosa CI1011, Staphylococcus epidermidis CI1110, and Streptococcus agalactiae CI1302...
July 18, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28732084/increased-parb-level-affects-expression-of-stress-response-adaptation-and-virulence-operons-and-potentiates-repression-of-promoters-adjacent-to-the-high-affinity-binding-sites-pars3-and-pars4-in-pseudomonas-aeruginosa
#17
Adam Kawalek, Krzysztof Glabski, Aneta Agnieszka Bartosik, Anna Fogtman, Grazyna Jagura-Burdzy
Similarly to its homologs in other bacteria, Pseudomonas aeruginosa partitioning protein ParB facilitates segregation of newly replicated chromosomes. Lack of ParB is not lethal but results in increased frequency of anucleate cells production, longer division time, cell elongation, altered colony morphology and defective swarming and swimming motility. Unlike in other bacteria, inactivation of parB leads to major changes of the transcriptome, suggesting that, directly or indirectly, ParB plays a role in regulation of gene expression in this organism...
2017: PloS One
https://www.readbyqxmd.com/read/28732057/structural-basis-of-zn-ii-induced-metal-detoxification-and-antibiotic-resistance-by-histidine-kinase-czcs-in-pseudomonas-aeruginosa
#18
Dan Wang, Weizhong Chen, Shanqing Huang, Yafeng He, Xichun Liu, Qingyuan Hu, Tianbiao Wei, Hong Shang, Jianhua Gan, Hao Chen
Pseudomonas aeruginosa (P. aeruginosa) is a major opportunistic human pathogen, causing serious nosocomial infections among immunocompromised patients by multi-determinant virulence and high antibiotic resistance. The CzcR-CzcS signal transduction system in P. aeruginosa is primarily involved in metal detoxification and antibiotic resistance through co-regulating cross-resistance between Zn(II) and carbapenem antibiotics. Although the intracellular regulatory pathway is well-established, the mechanism by which extracellular sensor domain of histidine kinase (HK) CzcS responds to Zn(II) stimulus to trigger downstream signal transduction remains unclear...
July 21, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28731462/corrigendum-characterization-of-the-first-double-stranded-rna-bacteriophage-infecting-pseudomonas-aeruginosa
#19
Yuhui Yang, Shuguang Lu, Wei Shen, Xia Zhao, Mengyu Shen, Yinling Tan, Gang Li, Ming Li, Jing Wang, Fuquan Hu, Shuai Le
This corrects the article DOI: 10.1038/srep38795.
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28731142/nlrc3-promotes-host-resistance-against-pseudomonas-aeruginosa-induced-keratitis-by-promoting-the-degradation-of-irak1
#20
Litao Guo, Qingzhu Kong, Zhijun Dong, Weili Dong, Xiaoxiao Fu, Leqi Su, Xiaobo Tan
Pseudomonas aeruginosa (PA)-induced keratitis is one of the most common and destructive bacterial diseases. The pathogenesis of PA infections is closely associated with excessive inflammatory responses. Nucleotide oligomerization domain (NOD)-like receptor (NLR) family with caspase activation and recruitment domain (CARD) containing 3 (NLRC3) protein has been implicated as a negative regulator of inflammation and antiviral response, but the role of NLRC3 in PA-induced keratitis has not been described...
July 20, 2017: International Journal of Molecular Medicine
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