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albumin pseudomonas

Ahmed AbdelKhalek, Charles R Ashby, Bhargav A Patel, Tanaji T Talele, Mohamed N Seleem
Bacterial infections present a serious challenge to healthcare practitioners due to the emergence of resistance to numerous conventional antibacterial drugs. Therefore, new bacterial targets and new antimicrobials are unmet medical needs. Rhodanine derivatives have been shown to possess potent antimicrobial activity via a novel mechanism. However, their potential use as antibacterials has not been fully examined. In this study, we determined the spectrum of activity of seven rhodanine derivatives (compounds Rh 1-7) against clinical isolates of Gram-positive and Gram-negative bacterial strains and Candida albicans...
2016: PloS One
Pedro F N Souza, Ilka M Vasconcelos, Fredy D A Silva, Frederico B Moreno, Ana C O Monteiro-Moreira, Luciana M R Alencar, Angélica S G Abreu, Jeanlex S Sousa, José T A Oliveira
Hospital-acquired infections caused by antibiotic-resistant bacteria threaten the lives of many citizens all over the world. Discovery of new agents to hinder bacterial development would have a significant impact on the treatment of infections. Here, the purification and characterization of Rc-2S-Alb, a protein that belongs to the 2S albumin family, from Ricinus communis seed cake, are reported. Rc-2S-Alb was purified after protein extraction with Tris-HCl buffer, pH 7.5, fractionation by ammonium sulfate (50-75%), and chromatography on Phenyl-Sepharose and DEAE-Sepharose...
September 28, 2016: Journal of Natural Products
Neal R Barshes, Cezarina Mindru, Chester Ashong, Maria Rodriguez-Barradas, Barbara W Trautner
We sought to identify factors associated with treatment failure and leg amputations among those patients who presented with foot osteomyelitis. Characteristics, treatments, and outcomes for all patients treated for probable or definite foot osteomyelitis (per consensus definition) between January 2011 and March 2015 were reviewed. Multivariate Cox regression models were used to identify risk factors for treatment failure (unanticipated resection of additional bone or leg amputation) and of leg amputation alone...
August 31, 2016: International Journal of Lower Extremity Wounds
Mohamed Altai, Hao Liu, Anna Orlova, Vladimir Tolmachev, Torbjörn Gräslund
Targeted delivery of toxins is a promising way to treat disseminated cancer. The use of monoclonal antibodies as targeting moiety has provided proof-of-principle for this approach. However, extravasation and tissue penetration rates of antibody-based immunotoxins are limited due to antibody bulkiness. The use of a novel class of targeting probes, Affibody molecules, provides smaller toxin-conjugated constructs, which may improve targeting. Earlier, we have demonstrated that affitoxins containing a HER2-targeting Affibody moiety and a deimmunized and truncated exotoxin A from Pseudomonas aeruginosa, PE38X8, provide highly selective toxicity to HER2-expressing cancer cells...
September 2016: International Journal of Oncology
Alexis Nzila, Assad Thukair, Saravanan Sankara, Shaikh Abdur Razzak
A bacterial consortium that degrades cooking oil (CO) has been isolated in wastewater (WW) samples, by enrichment in olive CO. This consortium could degrade 90% of CO within 7-9 days (from an initial 1% [w/v]), and it is more active at alkaline conditions. The 16S ribonucleic acid (RNA) gene analysis showed that it contains five bacterium species: Stenotrophomonas rhizophila, Sphingobacterium sp., Pseudomonas libanensis, Pseudomonas poae and Pseudomonas aeruginosa. This consortium can degrade the free fatty acids (FFA): palmitic, stearic, oleic, linoleic and linolenic acids; glycerol, glucose and amylose; and albumin, but could not efficiently degrade carboxymethyl-cellulose...
July 18, 2016: Environmental Technology
R A Popescu, K Magyari, A Vulpoi, D L Trandafir, E Licarete, M Todea, R Ştefan, C Voica, D C Vodnar, S Simon, I Papuc, L Baia
In the present study our interest is focused on finding the efficiency of 60SiO2·(32 - x)CaO·8P2O5·xCuO (mol%) glass-ceramics, with 0 ≤ x ≤ 4 mol%, in terms of bioactivity, biocompatibility, antibacterial properties and cell viability in order to determine the most appropriate composition for their further use in in vivo trials. The sol-gel synthesized samples show a preponderantly amorphous structure with a few crystallization centers associated with the formation of an apatite and calcium carbonate crystalline phases...
July 19, 2016: Biomaterials Science
Chun-Jen Huang, Sz-Hau Chu, Chien-Hung Li, T Randall Lee
Nanoparticles decorated with biocompatible coatings have received considerable attention in recent years for their potential biomedical applications. However, the desirable properties of nanoparticles for in vivo uses, such as colloidal stability, biodistribution, and pharmacokinetics, require further research. In this work, we report a bio-derived zwitterionic surface ligand, cysteine betaine (Cys-b) for the modification of hollow gold-silver nanoshells, giving rise to hyperthermia applications. Cys-b coatings on planar substrates and nanoshells were compared to conventional (11-mercaptoundecyl)tri(ethylene glycol) (OEG-thiol) to investigate their effects on the fouling resistance, colloidal stability, environmental tolerance, and photothermal properties...
September 1, 2016: Colloids and Surfaces. B, Biointerfaces
Aijing Luo, Zhuqing Zhong, Qiquan Wan, Qifa Ye
BACKGROUND: Pseudomonas aeruginosa infection remains a life-threatening complication after solid organ transplantation (SOT). We aimed to investigate the distribution and drug susceptibility of pathogens, and clinical characteristics of SOT recipients with Pseudomonas aeruginosa infections. MATERIAL/METHODS: A total of 55 SOT recipients who developed 61 episodes of Pseudomonas aeruginosa infections between January 1, 2003 and July 31, 2015 were retrospectively analyzed...
2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Aditi Sharma, Rohit Goyal, Lalit Sharma
BACKGROUND: Traditionally, Pine has been used to treat oxidative and inflammatory disorders. The study was aimed to investigate biological potential of phytoconstituents of Pinus plant species: Pinus roxburghii, Pinus wallichiana and Pinus gerardiana using in-vitro antioxidant, anti-inflammatory and antimicrobial methods. METHOD: The hydro-alcoholic extraction of dried plant: stem bark was done and the antioxidant activity was evaluated using free radical scavenging methods for 1,1-diphenyl-2-picrylhydrazyl, (DPPH), nitric oxide and hydrogen peroxide radicals, reducing power assays, and total antioxidant capacity...
2016: BMC Complementary and Alternative Medicine
Y Kida, J Taira, K Kuwano
Pseudomonas aeruginosa possesses an arsenal of both cell-associated (flagella, pili, alginate, etc.) and extracellular (exotoxin A, proteases, type III secretion effectors, etc.) virulence factors. Among them, secreted proteases that damage host tissues are considered to play an important role in the pathogenesis of P. aeruginosa infections. We previously reported that EprS, an autotransporter protease of P. aeruginosa, induces host inflammatory responses through protease-activated receptors. However, little is known about the role of EprS as a virulence factor of P...
February 2016: Microbiology
Maria Bagattini, Raffaella Buonocore, Maria Giannouli, Dario Mattiacci, Rossella Bellopede, Nicola Grimaldi, Antonio Nardone, Raffaele Zarrilli, Maria Triassi
BACKGROUND: The development of portable steam generators has made disinfection of the environment more practical. This study assessed the "in vitro" ability of an overheated dry-saturated steam vapour system to kill multidrug and extensively-drug resistant nosocomial pathogens, defining the antimicrobial spectrum and the contact times compared with the activity of sodium hypochlorite. METHODS: The antibacterial efficacy of the overheated dry-saturated steam vapour system and of sodium hypochlorite against nosocomial pathogen isolates: extensively drug-resistant Acinetobacter baumannii, Pseudomonas aeruginosa, carbapenemase-producing Klebsiella pneumoniae, methicillin-resistant Staphylococcus aureus, high-level aminoglycoside-resistant Enterococcus faecalis, Candida parapsilosis and Aspergillus fumigatus were assessed using a surface time-kill test carried out on glass surfaces, with or without bovine serum albumin (BSA)...
2015: BMC Research Notes
Sib Sankar Giri, Shib Sankar Sen, Cheng Chi, Hyoun Joong Kim, Saekil Yun, Se Chang Park, V Sukumaran
In the present study, the immunological efficacy of cellular components from the potential probiotic bacteria Bacillus subtilis VSG1, Pseudomonas aeruginosa VSG2, and Lactobacillus plantarum VSG3 was evaluated in Labeo rohita fingerlings. Fish were immunized intraperitoneally with 0.1 mL phosphate-buffer solution (PBS) containing 0.1 mg of any of the following cellular components: intercellular products (ICPs) of VSG1 (BS-ICPs), heat-killed whole cell products of VSG2 (PA-HKWCPs), or ICPs of VSG3 (LP-ICPs)...
October 2015: Fish & Shellfish Immunology
Takaya Maruyama, Takao Fujisawa, Shigeru Suga, Haruna Nakamura, Mizuho Nagao, Kiyosu Taniguchi, Kiyoyuki Tsutsui, Toshiaki Ihara, Michael S Niederman
BACKGROUND: In Japan, the routine use of early antiviral therapy for patients with influenza is standard. METHODS: This multicenter prospective cohort evaluation of hospitalized patients with laboratory-confirmed influenza identified prognostic factors among the patients receiving antiviral therapy. RESULTS: Of 1,345 patients with influenza (766 pediatric, 579 adult), excluding those aged < 1 year (who are not approved for antiviral therapy), 97...
February 2016: Chest
Elisabeth M Davis, Jaye M Platnich, Randall T Irvin, Daniel A Muruve
The exposure of blood to bioincompatible materials used for dialysis triggers leukocyte activation and protein adsorption. We describe a single-step, postmanufacturing method for surface modification to create biomaterials used in medical devices and dialysis with altered surface characteristics. Peptides derived from the receptor-binding domain of the type IV pilin of Pseudomonas aeruginosa were synthesized using L and D-amino acids to generate L-K122-4, enantiomer D-K122-4, and D-retroinverso RI-K122-4 peptides...
November 2015: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
Atqah AbdulWahab, Ahmed Abushahin, Mona Allangawi, Prem Chandra, Mohamed Osman AbdelRahman, Ashraf Soliman
OBJECTIVE: To determine serum zinc (Zn) level among cystic fibrosis (CF) patients with homozygous CFTR I1234V mutation associated with pancreatic sufficiency (PS). METHODS: A cross-sectional study was conducted including both pediatric and adult CF patients. Data on age, weight, height, body mass index (BMI), BMI Z-score, FEV1 and chronic Pseudomonas aeruginosa infection were collected. Serum Zn, albumin and total proteins were measured and analyzed. RESULTS: Forty-five CF patients with homozygous CFTR I1234V mutation belonging to a large Arab kindred tribe and eight CF patients with other mutations associated with pancreatic insufficiency (PI)...
June 19, 2015: Clinical Respiratory Journal
Hao Liu, Johan Seijsing, Fredrik Y Frejd, Vladimir Tolmachev, Torbjörn Gräslund
Development of cancer treatment regimens including immunotoxins is partly hampered by their immunogenicity. Recently, deimmunized versions of toxins have been described, potentially being better suited for translation to the clinic. In this study, a recombinant tripartite fusion toxin consisting of a deimmunized version of exotoxin A from Pseudomonas aeruginosa (PE38) genetically fused to an affibody molecule specifically interacting with the human epidermal growth factor receptor 2 (HER2), and also an albumin binding domain (ABD) for half-life extension, has been produced and characterized in terms of functionality of the three moieties...
August 2015: International Journal of Oncology
Wei Cheng, Chuan Yang, Xin Ding, Amanda C Engler, James L Hedrick, Yi Yan Yang
Microbial colonization and biofilm formation is the leading cause of contact lens-related keratitis. Treatment of the condition remains a challenge because of the need for prolonged therapeutic course and high doses of antimicrobial agents especially for biofilm eradication. The development of strategies to prepare nonfouling contact lens surfaces is a more practical way to ensure users' safety and relieve the excessive public healthcare burden. In this study, we report a series of polymers that were modified to introduce functionality designed to facilitate coating adhesion, antimicrobial and antifouling properties...
July 13, 2015: Biomacromolecules
I Randrianjatovo, E Girbal-Neuhauser, C-E Marcato-Romain
Biofilms are ecosystems of closely associated bacteria encapsulated in an extracellular matrix mainly composed of polysaccharides and proteins. A novel approach was developed for in situ quantification of extracellular proteins (ePNs) in various bacterial biofilms using epicocconone, a natural, fluorescent compound that binds amine residues of proteins. Six commercial proteins were tested for their reaction with epicocconone, and bovine serum albumin (BSA) was selected for assay optimization. The optimized protocol, performed as a microassay, allowed protein amounts as low as 0...
June 2015: Applied Microbiology and Biotechnology
Chunchen Gao, Junlong Zhao, Jun Han, Dongdong Li, Gaoyang Zhao, Hua Han, Hongyan Qin
OBJECTIVE: The mechanisms of mesenchymal stromal cells (MSCs)-mediated treatment of liver damage have been unclear. Two major mechanisms, which involve paracrine effects and/or direct trans-differentiation, have been proposed. To clarify which mechanism is more important, we planned to construct a recombinant plasmid expressing green fluorescent protein (GFP) driven by the cytomegalovirus (CMV) promoter and Pseudomonas aeruginosa exotoxin 40 (PE40) driven by the albumin (alb) promoter, which can induce cell death as soon as MSCs differentiate into hepatocytes...
April 2015: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
Andreia Z Chignalia, Stephen M Vogel, Albert B Reynolds, Dolly Mehta, Randal O Dull, Richard D Minshall, Asrar B Malik, Yuru Liu
The integrity of the lung alveolar epithelial barrier is required for the gas exchange and is important for immune regulation. Alveolar epithelial barrier is composed of flat type I cells, which make up approximately 95% of the gas-exchange surface, and cuboidal type II cells, which secrete surfactants and modulate lung immunity. p120-catenin (p120; gene symbol CTNND1) is an important component of adherens junctions of epithelial cells; however, its function in lung alveolar epithelial barrier has not been addressed in genetic models...
May 2015: American Journal of Pathology
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