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https://www.readbyqxmd.com/read/28338958/molecular-cloning-and-characterization-of-antimicrobial-peptides-from-skin-of-hylarana-guentheri
#1
Zhu Dong, Wenjie Luo, Hengren Zhong, Manchuriga Wang, Yanting Song, Shiming Deng, Yingxia Zhang
The cDNAs encoding antimicrobial peptides (AMPs) in the skin of Hylarana guentheri were identified, namely temporin (five peptides, termed temporin-GHa-GHd and temporin-GUa), brevinin-1 (one peptide, brevinin-1GUb), and brevinin-2 (eight peptides, brevinin-2GHd-2GHj, and brevinin-2GHb). Eleven of the 14 peptides have novel primary structures. Synthesized temporin GHa-GHd have broad-spectrum antimicrobial activities against Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), Gram-negative bacteria (Escherichia coli, Vibrio alginolyticus, and Pseudomonas aeruginosa), as well as fungus (Candida albicans)...
March 18, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28338676/dirhamnolipids-secreted-from-pseudomonas-aeruginosa-modify-anjpegungal-susceptibility-of-aspergillus-fumigatus-by-inhibiting-%C3%AE-1-3-glucan-synthase-activity
#2
Benoit Briard, Vero Rasoldier, Perrine Bomme, Noureddine ElAouad, Catherine Guerreiro, Pierre Chassagne, Laetitia Muszkieta, Jean-Paul Latgé, Laurence Mulard, Anne Beauvais
Pseudomonas aeruginosa and Aspergillus fumigatus are the two microorganisms responsible for most of the chronic infections in cystic fibrosis patients. P. aeruginosa is known to produce quorum-sensing controlled rhamnolipids during chronic infections. Here we show that the dirhamnolipids secreted from P. aeruginosa (i) induce A. fumigatus to produce an extracellular matrix, rich in galactosaminogalactan, 1,8-dihydroxynaphthalene (DHN)- and pyo-melanin, surrounding their hyphae, which facilitates P. aeruginosa binding and (ii) inhibit A...
March 24, 2017: ISME Journal
https://www.readbyqxmd.com/read/28337719/an-early-health-economic-analysis-of-the-potential-cost-effectiveness-of-an-adherence-intervention-to-improve-outcomes-for-patients-with-cystic-fibrosis
#3
Paul Tappenden, Susannah Sadler, Martin Wildman
BACKGROUND: Cystic fibrosis (CF) negatively impacts upon health-related quality of life and survival. Adherence to nebulised treatments is low; improving adherence is hypothesised to reduce rates of exacerbation requiring intravenous antibiotics and lung function decline. OBJECTIVE: A state transition model was developed to assess the cost effectiveness of an intervention aimed at increasing patient adherence to nebulised and inhaled antibiotics compared with current CF care, in advance of the forthcoming CFHealthHub randomised controlled trial (RCT)...
March 23, 2017: PharmacoEconomics
https://www.readbyqxmd.com/read/28335342/innovative-self-cleaning-and-biocompatible-polyester-textiles-nano-decorated-with-fe-n-doped-titanium-dioxide
#4
Ionela Cristina Nica, Miruna Silvia Stan, Anca Dinischiotu, Marcela Popa, Mariana Carmen Chifiriuc, Veronica Lazar, Gratiela G Pircalabioru, Eugenia Bezirtzoglou, Ovidiu G Iordache, Elena Varzaru, Iuliana Dumitrescu, Marcel Feder, Florin Vasiliu, Ionel Mercioniu, Lucian Diamandescu
The development of innovative technologies to modify natural textiles holds an important impact for medical applications, including the prevention of contamination with microorganisms, particularly in the hospital environment. In our study, Fe and N co-doped TiO₂ nanoparticles have been obtained via the hydrothermal route, at moderate temperature, followed by short thermal annealing at 400 °C. These particles were used to impregnate polyester (PES) materials which have been evaluated for their morphology, photocatalytic performance, antimicrobial activity against bacterial reference strains, and in vitro biocompatibility on human skin fibroblasts...
November 15, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28333961/phytochemical-investigation-of-aloe-pulcherrima-roots-and-evaluation-for-its-antibacterial-and-antiplasmodial-activities
#5
Dele Abdissa, Girma Geleta, Ketema Bacha, Negera Abdissa
Medicinal plants with documented traditional uses remain an important source for the treatment of a wide range of ailments. Evidence shows that majority of the Ethiopian population are still dependent on traditional medicine. Aloe pulcherrima Gilbert & Sebsebe is one of the endemic Aloe species traditionally used for the treatment of malaria and wound healing in central, Southern and Northern part of Ethiopia. The aim of the current study was, therefore, to isolate active compounds from roots of A. pulcherrima and evaluate for their antibacterial and antiplasmodial activities using standard test strains...
2017: PloS One
https://www.readbyqxmd.com/read/28333332/wck-5222-cefepime-zidebactam-antimicrobial-activity-tested-against-gram-negative-organisms-producing-clinically-relevant-%C3%AE-lactamases
#6
Helio S Sader, Paul R Rhomberg, Robert K Flamm, Ronald N Jones, Mariana Castanheira
Background: Zidebactam is a β-lactam enhancer antibiotic with a dual mechanism of action involving binding to Gram-negative PBP2 and β-lactamase inhibition. Cefepime combined with zidebactam (WCK 5222) is under clinical development for treatment of Gram-negative infections. Objectives: To evaluate the in vitro activities of cefepime and zidebactam separately and combined at 1:1 and 2:1 ratios when tested against Gram-negative organisms producing the most clinically relevant β-lactamase types...
March 18, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28331319/humanized-cd7-nanobody-based-immunotoxins-exhibit-promising-anti-t-cell-acute-lymphoblastic-leukemia-potential
#7
Yuan Yu, Jialu Li, Xuejun Zhu, Xiaowen Tang, Yangyi Bao, Xiang Sun, Yuhui Huang, Fang Tian, Xiaomei Liu, Lin Yang
BACKGROUND: Nanobodies, named as VHHs (variable domain of heavy chain of HCAb [heavy-chain antibodies]), are derived from heavy-chain-only antibodies that circulate in sera of camelids. Their exceptional physicochemical properties, possibility of humanization, and unique antigen recognition properties make them excellent candidates for targeted delivery of biologically active components, including immunotoxins. In our previous efforts, we have successfully generated the monovalent and bivalent CD7 nanobody-based immunotoxins, which can effectively trigger the apoptosis of CD7-positive malignant cells...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28331122/an-autopsy-case-report-of-adult-t-cell-leukemia-accompanied-by-rheumatoid-arthritis-mimicking-diffuse-panbronchiolitis
#8
Tomoko Shiraishi, Hiroshi Ishimoto, Kentaro Akata, Toshinori Kawanami, Kazuhiro Yatera, Hiroshi Mukae
A 50-year-old female with a history of chronic sinusitis and rheumatoid arthritis visited our department with repetitive lower respiratory tract infections of Pseudomonas aeruginosa. Her chest CT showed diffuse panbronchiolitis-like pulmonary lesions, her blood examination revealed atypical lymphocytes, and she was serologically positive for anti-human T-lymphotrophic virus type 1 (HTLV-1) antibody. Her rheumatoid arthritis had been well-controlled after biological agent treatment followed by anti-inflammatory analgesic treatment...
2017: Journal of UOEH
https://www.readbyqxmd.com/read/28330494/pseudomonas-oryzihabitans-sepsis-in-a-1-year-old-child-with-multiple-skin-rashes-a-case-report
#9
Michael Owusu, Ellis Owusu-Dabo, Godfred Acheampong, Isaac Osei, John Amuasi, Nimako Sarpong, Augustina Annan, Hsin-Ying Chiang, Chih-Horng Kuo, Se Eun Park, Florian Marks, Yaw Adu-Sarkodie
BACKGROUND: Pseudomonas oryzihabitans is a Pseudomonas bacterial organism rarely implicated in human infections. The bacterium has been isolated in a few reported cases of neurosurgical infections and patients with end-stage cirrhosis, sickle cell disease, and community-acquired urinary tract infections. Limited information exists in developing countries, however, because of the lack of advanced microbiological tools for identification and characterization of this bacterium. This case report describes the isolation of a rare Pseudomonas bacterium in a patient presenting with sepsis and skin infection...
March 23, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28330200/use-of-ca-alginate-immobilized-pseudomonas-aeruginosa-for-repeated-batch-and-continuous-degradation-of-endosulfan
#10
Vijayalakshmi Pradeep, Usha Malavalli Subbaiah
The current investigation is taken up with the aim of studying repeated batch and continuous degradation of Endosulfan, using Ca-alginate immobilized cells of Pseudomonas aeruginosa isolated from an agricultural soil. The work involves the study of genes and enzymes involved in the degradation of the pesticide and was carried out with an objective of reducing the toxicity of Endosulfan by degrading it to less toxic metabolites. The long-term stability of Endosulfan degradation was studied during its repeated batch degradation, carried out over a period of 35 days...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330177/pseudomonas-extremorientalis-bu118-a-new-salt-tolerant-laccase-secreting-bacterium-with-biotechnological-potential-in-textile-azo-dye-decolourization
#11
Mohamed Neifar, Habib Chouchane, Mouna Mahjoubi, Atef Jaouani, Ameur Cherif
The present investigation focused on screening of a new potent strain for laccase production and optimizing the process parameters to achieve the maximum enzymatic decolourization of textile azo dye Congo red. Seven hydrocarbonoclastic bacterial strains were selected as positive in laccase production in solid medium using 2,6 dimethoxyphenol as an enzyme activity indicator. The best enzyme producer Pseudomonas extremorientalis BU118 showed a maximum laccase activity of about 7000 U/L of wheat bran under solid-state conditions...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329350/multicenter-evaluation-of-ceftolozane-tazobactam-for-serious-infections-caused-by-carbapenem-resistant-pseudomonas-aeruginosa
#12
Jose M Munita, Samuel L Aitken, William R Miller, Federico Perez, Rossana Rosa, Luis A Shimose, Paola N Lichtenberger, Lilian M Abbo, Rupali Jain, Masayuki Nigo, Audrey Wanger, Rafael Araos, Truc T Tran, Javier Adachi, Robert Rakita, Samuel Shelburne, Robert A Bonomo, Cesar A Arias
A multicenter, retrospective study of patients infected with carbapenem-resistant Pseudomonas aeruginosa who were treated with ceftolozane/tazobactam was performed. Among 35 patients, pneumonia was the most common indication and treatment was successful in 26 (74%). Treatment failure was observed in all cases where isolates demonstrated ceftolozane-tazobactam minimum inhibitory concentrations ≥8 μg/mL.
March 14, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28326074/diversity-and-biomineralization-potential-of-the-epilithic-bacterial-communities-inhabiting-the-oldest-public-stone-monument-of-cluj-napoca-transylvania-romania
#13
Adrian-Ştefan Andrei, Manuela R Păuşan, Tudor Tămaş, Nicolae Har, Lucian Barbu-Tudoran, Nicolae Leopold, Horia L Banciu
In this study, we investigated the biomineralization potential and diversity of the epilithic bacterial communities dwelling on the limestone statue of Saint Donatus, the oldest public monument of Cluj-Napoca city (Transylvania region, NW Romania). Their spatial distribution together with phylogenetic and metabolic diversity, as well as their capacity to precipitate calcium carbonate was evaluated by combining molecular and phenotypic fingerprinting methods with X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron-microscopy analyses...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28323450/effect-of-wetland-plants-and-bacterial-inoculation-on-dissipation-of-phenanthrene
#14
Weisong Pan, Chuan Wu, Qiming Wang, Zhaohong Su, Hui Zhou, Anna King Chuen Chung, William Hartley, Long Ge
This study attempts to evaluate the capacity of wetland plants' ability to dissipate phenanthrene (PHE) under waterlogged conditions. The results indicate that Typha latifolia and Vertiveria zizanioides may efficiently degrade PHE, and were much more effective when under combined plant cultivation with the inoculation of Pseudomonas frederiksbergensis (ATCC BAA-257). Concentrations of PHE declined from 200 mg kg(-1) to less than 52 mg kg(-1) in all treatments with plant cultivation. At the end of the experimental period, PHE was undetectable in combined plant cultivation in the presence of bacteria inoculation...
March 21, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28323195/left-ventricular-assist-device-related-infections-a-multicentric-study
#15
S Siméon, E Flécher, M Revest, M Niculescu, J-C Roussel, M Michel, P Leprince, P Tattevin
OBJECTIVES: Implantable left ventricular assist device (LVAD) is a major therapeutic progress for end-stage heart failure in selected patients. As their use is expanding, infectious complications are emerging, with limited data available to guide their management. We aimed to better characterize LVAD-related infections. METHODS: We enrolled all consecutive patients diagnosed with LVAD-related infections in 3 referral centers in France, using standardized definition of infections in patients with LVAD...
March 18, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28323149/the-effect-of-tobramycin-incorporated-with-bismuth-ethanedithiol-loaded-on-niosomes-on-the-quorum-sensing-and-biofilm-formation-of-pseudomonas-aeruginosa
#16
Faeze Mahdiun, Shahla Mansouri, Payam Khazaeli, Rasoul Mirzaei
Pseudomonas aeruginosa is an opportunistic pathogen, enable of causing infections especially in immunocompromised patients. Recently many isolates developed multiple drug resistance, resulting in treatment failure in serious infections. In this study, the effect of tobramycin incorporated with bismuth-ethanedithiol loaded on niosomes on the quorum sensing and biofilm production by P. aeruginosa was evaluated. Thin layer hydration method with cholesterol (30%), Span 40 and Tween 40 were used to make niosomes...
March 18, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28319829/evaluation-of-the-pharmacokinetics-of-imipenem-following-regional-limb-perfusion-using-the-saphenous-and-the-cephalic-veins-in-standing-horses
#17
G Kelmer, A J Tatz, E Kdoshim, M Britzi, G Segev
This prospective experimental study goal was to determine the pharmacokinetics of imipenem after intravenous regional limb perfusion (IV-RLP) in standing horses. Nine horses participated in the study; that was approved by the University Animal Care and Use Committee. One thoracic limb or one pelvic limb of each horse was randomly selected. After the veins were catheterized, an Esmarch bandage tourniquet was applied and the catheter was injected with a solution containing 500mg of imipenem. Synovial fluid samples were collected from the fetlock joint and blood samples were collected from the jugular vein...
February 24, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28316049/structure-and-function-of-the-bacterial-communities-during-rhizoremediation-of-hexachlorobenzene-in-constructed-wetlands
#18
Cuiping Zhang, Bei Wang, Xiaoyan Dai, Shuying Li, Guangqiu Lu, Yuanqing Zhou
Vertical flow constructed wetlands (VF CWs) are considered to be effective for treating organic pollutants. The rhizosphere of macrophytes such as Phragmites sp., Typha sp. serves as an active and dynamic zone for the microbial degradation of organic pollutants. However, it is still not clear how soil bacterial communities respond to macrophytes and pollutants during the process. For this purpose, the seedlings of Phragmites australis and Typha angustifolia were planted respectively in the VF CWs added with HCB at a dose of 2 mg/kg...
March 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28316045/nitrogen-removal-and-microbial-community-shift-in-an-aerobic-denitrification-reactor-bioaugmented-with-a-pseudomonas-strain-for-coal-based-ethylene-glycol-industry-wastewater-treatment
#19
Cong Du, Chong-Wei Cui, Shan Qiu, Sheng-Nan Shi, Ang Li, Fang Ma
An aerobic denitrification system, initially bioaugmented with Pseudomonas strain T13, was established to treat coal-based ethylene glycol industry wastewater, which contained 3219 ± 86 mg/L total nitrogen (TN) and 1978 ± 14 mg/L NO3(-)-N. In the current study, a stable denitrification efficiency of 53.7 ± 4.7% and nitrite removal efficiency of 40.1 ± 2.7% were achieved at different diluted influent concentrations. Toxicity evaluation showed that a lower toxicity of effluent was achieved when industry wastewater was treated by stuffing biofilm communities compared to suspended communities...
March 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28315724/molecular-detection-of-six-virulence-genes-in-pseudomonas-aeruginosa-isolates-detected-in-children-with-urinary-tract-infection
#20
Ali Badamchi, Hossein Masoumi, Shima Javadinia, Ramin Asgarian, Azardokht Tabatabaee
Although a vast majority of Urinary tract infections (UTIs) are caused by E. coli, epidemiological reports have indicated an increasing rate of such infections caused by some other opportunistic organisms including Pseudomonas aeruginosa. Antimicrobial susceptibility and pathogenesis mechanisms of P. aeruginosa are poorly understood. The aim of this study was to detect some virulence factor genes and antimicrobial susceptibility patterns of P. aeruginosa isolates detected in patients with UTI, in children hospital of Tehran, Tehran, Iran...
March 16, 2017: Microbial Pathogenesis
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