Prevalence and Genetic Relatedness of Extended Spectrum- β-Lactamase-Producing Escherichia coli Among Humans, Cattle, and Poultry in Pakistan

Microbial Drug Resistance, Ahead of Print.
Source: Microbial Drug Resistance - Category: Microbiology Authors: Source Type: research

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Publication date: Available online 19 October 2019Source: Materials Science and Engineering: CAuthor(s): Camilo A.S. Ballesteros, Daniel S. Correa, Valtencir ZucolottoAbstractSmart nanomaterials activated by light is one of the most exciting strategies to control the release of substances in varied environments. Here we developed a smart nanomaterial formed by a photoresponsive nanogel containing silver nanoparticles (AgNPs) immobilized on the surface of biodegradable polycaprolactone (PCL) nanofibers mats produced by electrospinning. The silver nanoparticles (AgNps) are released from the nanogel and dispersed inside the n...
Source: Materials Science and Engineering: C - Category: Materials Science Source Type: research
Publication date: Available online 16 October 2019Source: Materials Science and Engineering: CAuthor(s): Rodianah Alias, Reza Mahmoodian, Krishnamurithy Genasan, Vellasamy K.M., Mohd Hamdi Abd Shukor, Tunku KamarulAbstractSurgical site infection associated with surgical instruments has always been a factor in delaying post-operative recovery of patients. The evolution in surface modification of surgical instruments can be a potential choice to overcome the nosocomial infection mainly caused by bacterial populations such as Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli. A study was, therefore, conducte...
Source: Materials Science and Engineering: C - Category: Materials Science Source Type: research
In this study, for developing a scaffold for tissue engineering from fish processing wastes, a hierachial collagen/gelatin/chitosan novel porous scaffold was fabricated using blends of collagen and gelatin extracted from the skins of Marine big eye snapper Priacanthus humrur. Scaffolds were developed by mechanical spinning of chitosan and by mixing of collagen and gelatin solutions followed by freeze drying and subsequent crosslinking of polymers. The scaffolds were evaluated for rheological properties – porosity, apparent density and swelling capacity to assess their mechanical property.Gelatin/chitosan composition ...
Source: Materials Science and Engineering: C - Category: Materials Science Source Type: research
Publication date: Available online 19 October 2019Source: Food ChemistryAuthor(s): Tiantian Min, Zhu Zhu, Xiaoli Sun, Zhipeng Yuan, Junwei Zha, Yongqiang WenAbstractIn this work, a multifunctional food packaging composite coating with transparent, biodegradable, antifogging and antibacterial properties was designed and fabricated by quaternary ammonium salt modified chitosan (HACC) and poly (vinyl alcohol) (PVA) via a facile and environment-friendly solution casting method. A simple quaternization modification enabled the coating simultaneously to achieve excellent antifogging and antibacterial functions. The excellent ant...
Source: Food Chemistry - Category: Food Science Source Type: research
Publication date: Available online 19 October 2019Source: Journal of BiotechnologyAuthor(s): Julia Tröndle, Kristin Schoppel, Arne Bleidt, Natalia Trachtmann, Georg A. Sprenger, Dirk Weuster-BotzAbstractE. coli strain NT1259 /pF112aroFBLkan was able to produce 14.3 g L-1 L-tryptophan within 68 h in a fed-batch process from glycerol on a 15 L scale. To gain detailed insight into metabolism of this E. coli strain in the fed-batch process, a sample of L-tryptophan producing cells was withdrawn after 47 h, was separated rapidly and then resuspended in four parallel stirred-tank bioreactors with...
Source: Journal of Biotechnology - Category: Biotechnology Source Type: research
In this study, we discovered potent p53-MDM2 inhibition by 2-thiobenzyl-3-formyl quinoline, 2-thio-1,2-dihydroquinoline-3-formyl N-substituted thiosemi-carbazone and fluorine substituted new pyridine and pyran derivatives by structure-based design.Graphical abstract
Source: Journal of Molecular Structure - Category: Molecular Biology Source Type: research
Publication date: Available online 19 October 2019Source: Sensors and Actuators B: ChemicalAuthor(s): Mahmoud Amouzadeh Tabrizi, Josep Ferré-Borrull, Lluis F. MarsalAbstractFoodborne Salmonella disease is a major public health concern. Therefore, it is crucial to design a reliable biosensor to the diagnosis of this disease. Herein, we fabricated an interferometric reflectance spectroscopy (IRS) based DNA sensor for the determination of Salmonella-specific DNA fragment concentration. For this purpose, the nanoporous anodic alumina (NAA) was first fabricated. The pore walls of NAA were then functionalized with 3-amino...
Source: Sensors and Actuators B: Chemical - Category: Chemistry Source Type: research
This study focuses on preparation of antibacterial polymer surface by grafting polyethylene terephthalate (PET) with Ag NPs differing by method of preparation. Ag NP dispersions were synthesized by chemical (Ag NPCH), electrochemical (Ag NPE) and physical (Ag NPP) methods. They were characterized by transmission electron microscopy and UV–Vis spectroscopy. Ag NPs were grafted onto plasma treated PET using dithiol interlayer because of Ag high affinity to thiol groups. Success of grafting was determined by X–ray photoelectron (XPS) and energy dispersive X-ray spectroscopies. Atomic force and scanning electron mi...
Source: Reactive and Functional Polymers - Category: Chemistry Source Type: research
Publication date: Available online 19 October 2019Source: Inorganica Chimica ActaAuthor(s): Ayman K. El-Sawaf, El Hassane AnouarAbstractThe (E)-N'-(2-hydroxybenzylidene)morpholine-4-carbothiohydrazide (H2L) ligand and its chelates with Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) have been synthesized. Analytical and spectral data prove that the ligand acts a monobasic tridentate ligand coordinated via deprotonated phenolic O, azomethine N and thione S atoms (ONS chromophore) with cobalt(II), nickel(II) and copper(II) salts leading to two fused five and six-membered chelate rings. While with zinc(II) and cadmium(II) salts the...
Source: Inorganica Chimica Acta - Category: Chemistry Source Type: research
In this study, biochar catalysts were produced via pyrolysis of anaerobic digestion sludge (ADS) as effective PDS activators. The biochar derived from ADS (ADSBC) yielded large specific surface areas, a high degree of graphitization and good conductivity, which can be used for effectively oxidizing various pollutants including dyes, estrogens and sulfonamides with PDS in broad pH and temperature ranges. It is showed that PDS activated by ADSBC 1000 can completely remove sulfathiazole in 90 min much higher than that of ADSBC 400 (20.25%). Moreover, the biochar produced under high pyrolysis temperature shows great stability ...
Source: Chemical Engineering Journal - Category: Chemistry Source Type: research
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