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Paula L Vieira-Brock, Brent M Vaughan, David L Vollmer
Plant essential oils (EOs) are known to inhibit the growth of bacteria and fungi. Whether these antimicrobial effects are comparable to synthetic household products is less clear. Furthermore, limited research is available on the potential additive effect of blending EOs. In this investigation, a new EO blend containing orange, patchouli, peppermint, and clary sage was compared to its individual single oils and to three household products-air freshener, liquid soap, and body spray-for their ability to inhibit the growth of Staphylococcus aureus, Streptococcus pneumoniae, Pseudonomas aeruginosa, and Aspergillus brasiliensis in the disc-diffusion assay...
December 2017: Biochimie open
Yaqi Wo, Elizabeth J Brisbois, Jianfeng Wu, Zi Li, Terry C Major, Azmath Mohammed, Xianglong Wang, Alessandro Colletta, Joseph L Bull, Adam J Matzger, Chuanwu Xi, Robert H Bartlett, Mark E Meyerhoff
Nitric oxide (NO) has many important physiological functions, including its ability to inhibit platelet activation and serve as potent antimicrobial agent. The multiple roles of NO in vivo have led to great interest in the development of biomaterials that can deliver NO for specific biomedical applications. Herein, we report a simple solvent impregnation technique to incorporate a nontoxic NO donor, S -nitroso- N -acetylpenicillamine (SNAP), into a more biocompatible biomedical grade polymer, CarboSil 20 80A...
March 13, 2017: ACS Biomaterials Science & Engineering
Xi Chen, Helmut Hirt, Yuping Li, Sven-Ulrik Gorr, Conrado Aparicio
Infection is one of the most prevalent causes for dental implant failure. We have developed a novel antimicrobial peptide coating on titanium by immobilizing the antimicrobial peptide GL13K. GL13K was developed from the human salivary protein BPIFA2. The peptide exhibited MIC of 8 µg/ml against planktonic Pseudonomas aeruginosa and their biofilms were reduced by three orders of magnitude with 100 µg/ml GL13K. This peptide concentration also killed 100% of Streptococcus gordonii. At 1 mg/ml, GL13K caused less than 10% lysis of human red blood cells, suggesting low toxicity to mammalian cells...
2014: PloS One
Jin-Feng Liu, Gang Wu, Shi-Zhong Yang, Bo-Zhong Mu
Biosurfactant-producing microorganisms inhabiting oil reservoirs are of great potential in industrial applications. Yet, till now, the knowledge about the structure and physicochemical property of their metabolites are still limited. The aim of this study was to purify and structurally characterize the biosurfactant from Pseudomonas aeruginosa strain FIN2, a newly isolated strain from an oil reservoir. The purification was conducted by silica gel column chromatography followed by pre-RP HPLC and the structural characterization was carried out by GC-MS combined with MS/MS...
May 2014: World Journal of Microbiology & Biotechnology
Shaily Mahendra, Ariel Grostern, Lisa Alvarez-Cohen
1,4-Dioxane (dioxane), a probable human carcinogen, is used as a solvent stabilizer for 1,1,1-trichloroethane (TCA) and other chlorinated solvents. Consequently, TCA and its abiotic breakdown product 1,1-dichloroethene (DCE) are common co-contaminants of dioxane in groundwater. The aerobic degradation of dioxane by microorganisms has been demonstrated in laboratory studies, but the potential effects of environmentally relevant chlorinated solvent co-contaminants on dioxane biodegradation have not yet been investigated...
March 2013: Chemosphere
A Kapil, R Bali, B K Das
BACKGROUND AND OBJECTIVES: isepamicin is a new aminoglycoside with a spectrum of activity similar to amikacin with an advantage of possessing a high level of stability against different aminoglycoside modifying enzymes. the in vitro susceptibility of nosocomial isolates obtained from patients admitted to the All India Institute of Medical Sciences, New Delhi during October-December, 1999 was tested against isepamicin and compared with other aminoglycosides. METHODS: a total of 251 clinical isolates were studied which included Escherichia coli 87, Klebsiella pneumoniae 54, Pseudonomas aeruginosa 38, Staphylococcus aureus 27 (methicillin resistant S...
February 2001: Indian Journal of Medical Research
I Carmichael, I S Harper, M J Coventry, P W Taylor, J Wan, M W Hickey
Bacterial biofilms have been observed and reported on food and food-processing surfaces and can contribute to increased risks for product quality and food safety. The colonization of fruit and vegetables by pectynolitic bacteria like Pseudonomas fluorescens attributable to conditions such as soft rot, can also manifest as biofilms. A developed biofilm structure can provide a protective environment for pathogens such as Listeria monocytogenes reducing the effectiveness of sanitisers and other inhibitory agents...
December 1998: Journal of Applied Microbiology
No abstract text is available yet for this article.
August 1949: Journal of Bacteriology
Fabio Martinon
Innate immunity is a crucial part of the immune system, capable of mounting specific host responses against distinct pathogens. An integral component of the innate immune system is a network of pathogen recognition receptors, which are present at the surface of the cell or in the cytoplasm. Nucleotide oligomerization domain (Nod)-like receptors form the largest known family of intracellular innate immune sensors of microbes and danger signals that initiate early host responses. Some Nod-like receptors, such as NALP, NAIP and IPAF, form molecular machines termed inflammasomes, which are involved in the activation of inflammatory cytokines such as IL-1beta and IL-18...
November 2007: European Journal of Immunology
A A Falamin, A V Pinevich
A unicellular manganese-oxidizing bacterium (strain L7), isolated from Lake Ladoga, is identified as "Siderocapsa" sp. according to its morphology. However, this bacterium belongs to the phylogenetic cluster of Pseudomonas putida. The physiological characteristics (utilization of sugars, polyatomic alcohols, organic acids, and phenolic substrates as carbon and energy sources) also indicate the similarity of strain L7 to representatives of the genus Pseudomonas. The growing culture oxidizes Mn(II); the rate of oxidation depends on the type of added organic substrate...
March 2006: Mikrobiologiia
No abstract text is available yet for this article.
July 1951: Annales de L'Institut Pasteur
No abstract text is available yet for this article.
April 1964: Pediatria Polska
No abstract text is available yet for this article.
November 1962: Nature
Haynes, William C. (Northern Utilization Research and Development Division, Peoria, Ill.) and Lenora J. Rhodes. Comparative taxonomy of crystallogenic strains of Pseudomonas aeruginosa and Pseudomonas chlororaphis. J. Bacteriol. 84:1080-1084. 1962.-Only 11 of 39 strains received in the Agricultural Research Service Culture Collection under the designation Pseudonomas chlororaphis proved to be authentic; 28 were typical, pyocyanogenic strains of P. aeruginosa. The reason for this disproportionately high rate of misidentification apparently arises from an erroneous belief that the ability to produce green and yellow crystals of chlororaphin and oxychlororaphin is confined to P...
November 1962: Journal of Bacteriology
V Cestari, M Boidi, S Cecchelli, P Crimi
BACKGROUND: A prevalence study regarding hospital acquired infections and particularly surgical wound infections was performed from 17-4-1995 to 17-7-1995 in the Voghera hospital, a large one in Northern Italy. METHODS: The records of all subjects who have operated since at least 24 hours have been checked and the surgical wounds have been classified according to the guidelines of CDC (Atlanta). RESULTS: The prevalence rate of surgical wound infections was 13...
May 1999: Minerva Chirurgica
P Volkow, M Hernández Palestina, P Vilar-Puig
Malignant external otitis is a life-threatening infection occurring in aging diabetic and immunocompromised patients. The development of new antimicrobial and diagnostic aids has modified the therapy and prognosis of the disease. We describe our experience in 12 cases seen between 1982 and 1991, and review the diagnostic and therapeutic criteria during this lapse. Ten cases were males and 11 were diabetics. The most common symptoms were unilateral otalgia and otorrhea. All had edema of the external auditory channel and nine, proliferation of granulation tissue...
November 1994: Revista de Investigación Clínica; Organo del Hospital de Enfermedades de la Nutrición
N E Labrou, Y D Clonis
The mode of interaction of the ketocarboxyl-group-recognizing enzyme oxaloacetate decarboxylase (OXAD) from Pseudonomas sp., with purpose-designed (keto)-carboxyl-terminal biomimetic monochlorotriazinyl-dyes (BM) and parent dichlorotriazinyl-dye Vilmafix blue A-R (VBAR) was investigated. Kinetic inhibition studies and determinations of KD values of the respective dye-enzyme complex from both difference spectra and enzyme inactivation studies were employed. Substratemimetic (biomimetic) dye-ligands bear a terminal (keto)carboxyl-moiety linked to the reactive chlorotriazine ring, thus mimicking the organic acid substrate of OXAD...
August 1, 1995: Archives of Biochemistry and Biophysics
J L Garcia, F Penin, M C Regent, G Cuny
No abstract text is available yet for this article.
March 1980: Revue du Rhumatisme et des Maladies Ostéo-articulaires
J Pillich, G Pulverer
No abstract text is available yet for this article.
1969: Journal of Hygiene, Epidemiology, Microbiology, and Immunology
M Konno
No abstract text is available yet for this article.
January 1972: Nihon Shonika Gakkai Zasshi. Acta Paediatrica Japonica
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