Showing 1-30 of 37 resultados for "L2898"
Diixa Patel et al.
International journal of antimicrobial agents, 38(5), 442-446 (2011-08-16)
Daptomycin is highly active against Staphylococcus aureus, including multidrug-resistant strains and those with reduced susceptibility to vancomycin. However, daptomycin-non-susceptible (Dap(NS)) strains [minimum inhibitory concentration (MIC) >1mg/L] have been derived clinically and in vitro. The mechanism(s) by which this occurs is...
Fuying Cui et al.
Drug delivery, 17(8), 617-623 (2010-08-24)
Nasal colonization of Staphylococcus aureus (S.aureus) is known as a significant risk factor for nosocomial infections, and clearance of its nasal colonization greatly reduces the risk. In the present study the preparation and characterizations of the chitosan-o/w cream incorporated with...
Igor Belyansky et al.
The Journal of surgical research, 171(2), 409-415 (2011-06-24)
Lysostaphin (LS), a naturally occurring Staphylococcal endopeptidase, has the ability to penetrate biofilm, and has been identified as a potential antimicrobial to prevent mesh infection. The goals of this study were to determine if LS adhered to porcine mesh (PM)...
Andrew P Desbois et al.
The Journal of antimicrobial chemotherapy, 68(11), 2569-2575 (2013-06-27)
To evaluate the in vivo effectiveness of a combination treatment containing ranalexin (a natural antimicrobial peptide) and lysostaphin (an antistaphylococcal endopeptidase) for reducing nasal burden of methicillin-resistant Staphylococcus aureus (MRSA). The community-acquired MRSA strain S. aureus NRS384 (USA300-0114) was used...
Evaluation of activity of recombinant lysostaphin against isolates of meticillin-resistant Staphylococcus aureus from Indian hospitals.
Ashwani Kumar et al.
Journal of medical microbiology, 63(Pt 5), 763-766 (2014-03-14)
G Thumm et al.
Molecular microbiology, 23(6), 1251-1265 (1997-03-01)
Lysostaphin is an extracellular glycylglycine endopeptidase produced by Staphylococcus simulans biovar staphylolyticus ATCC1362 that lyses staphylococcal cells by hydrolysing the polyglycine interpeptide bridges of the peptidoglycan. Renewed analysis of the sequence of the lysostaphin gene (lss), and the sequencing of...
Ching-Ying Huang et al.
Animal biotechnology, 24(2), 129-147 (2013-03-29)
Lysostaphin (LYS) is an anti-staphylococcal prokaryotic polypeptide that has been used to avoid Staphylococcus aureus mastitis through transgenic or viral vector approaches exogenously expressed in dairy animals. However, glycosylation of lysostaphin expressed in mammalian cells results in a loss of...
Inga Potapova et al.
Journal of microbiological methods, 92(1), 90-98 (2012-11-20)
Specific bacteria imaging is highly desirable in clinical diagnostics. Probes enabling rapid and specific diagnostics of bacteria are limited. Current clinical infection diagnostics is time consuming and invasive, relies on microbiological cultures. We investigated the potential of Lysostaphin as a...
A P Desbois et al.
European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology, 30(8), 1015-1021 (2011-02-12)
Drug-resistant staphylococci constitute a serious problem that urgently requires the discovery of new therapeutic agents. There has been a resurgence in interest in using lysostaphin (a specific anti-staphylococcal enzyme) as a treatment for infections caused by these important pathogens. However...
Titik Nuryastuti et al.
Antonie van Leeuwenhoek, 94(2), 317-328 (2008-05-06)
Phenotypic variation of Staphylococcus epidermidis involving the slime related ica operon results in heterogeneity in surface characteristics of individual bacteria in axenic cultures. Five clinical S. epidermidis isolates demonstrated phenotypic variation, i.e. both black and red colonies on Congo Red...
M Fenton et al.
Journal of applied microbiology, 111(4), 1025-1035 (2011-08-05)
To develop an efficient purification strategy for the bacteriophage lysin CHAP(K) . To evaluate its antibacterial spectrum(,) enzymatic properties, optimal reaction conditions and lytic activity against live Staphlyococcus aureus. Recombinant CHAP(K) was purified to homogeneity by cation exchange chromatography, with...
Aradhana A Vipra et al.
BMC microbiology, 12, 41-41 (2012-03-24)
Bacterial drug resistance is one of the most significant challenges to human health today. In particular, effective antibacterial agents against methicillin-resistant Staphylococcus aureus (MRSA) are urgently needed. A causal relationship between nasal commensal S. aureus and infection has been reported....
Oren Levinger et al.
Applied and environmental microbiology, 78(22), 7954-7959 (2012-09-04)
We previously found that a short exposure of Staphylococcus aureus to subinhibitory (SI) doses of epigallocatechin gallate (EGCG) results in increased cell wall thickness, adaptation, and enhanced tolerance to cell-wall-targeted antibiotics. In this study, the response to EGCG of sigB...
Rohan Satishkumar et al.
Antimicrobial agents and chemotherapy, 55(9), 4379-4385 (2011-06-29)
Bacterial infections by antibiotic-resistant Staphylococcus aureus strains are among the most common postoperative complications in surgical hernia repair with synthetic mesh. Surface coating of medical devices/implants using antibacterial peptides and enzymes has recently emerged as a potentially effective method for...
Akinori Okumura et al.
FEBS letters, 587(5), 404-409 (2013-01-29)
Leukocyte cell-derived chemotaxin 2 (LECT2) is a secreted hepatic protein that has been associated with several physiological activities. LECT2 belongs to the peptidase M23 family, suggesting that it is a zinc-binding protein. To test this possibility, electrospray ionization mass spectrometry...
Thomas S Lawson et al.
Journal of clinical laboratory analysis, 25(2), 142-147 (2011-03-26)
To detect with whole-cell fluorescence in situ hybridization (FISH), Staphylococcus aureus is typically permeabilized with lysozyme and lysostaphin. We tested whether it was feasible to detect S. aureus and differentiate it from Staphylococcus epidermidis with lysozyme-only permeabilization. We compared lysozyme...
Ali Houry et al.
Proceedings of the National Academy of Sciences of the United States of America, 109(32), 13088-13093 (2012-07-10)
Bacteria grow in either planktonic form or as biofilms, which are attached to either inert or biological surfaces. Both growth forms are highly relevant states in nature and of paramount scientific focus. However, interchanges between bacteria in these two states...
Carl J Balibar et al.
Journal of bacteriology, 191(3), 851-861 (2008-11-26)
Isoprenoids are a class of ubiquitous organic molecules synthesized from the five-carbon starter unit isopentenyl pyrophosphate (IPP). Comprising more than 30,000 known natural products, isoprenoids serve various important biological functions in many organisms. In bacteria, undecaprenyl pyrophosphate is absolutely required...
R Satishkumar et al.
Nanotechnology, 22(50), 505103-505103 (2011-11-24)
The objective of this paper was to study the effect of antibody-directed targeting of S. aureus by comparing the activities of lysostaphin conjugated to biodegradable polylactide nanoparticles (NPs) in the presence and in the absence of co-immobilized anti-S. aureus antibody....
Lysostaphin: an antistaphylococcal agent
Kumar J K
Applied Microbiology and Biotechnology, 80(4), 555-561 (2008)
Ing-Marie Jonsson et al.
PloS one, 5(12), e14209-e14209 (2010-12-15)
Ecs is an ATP-binding cassette (ABC) transporter present in aerobic and facultative anaerobic gram-positive Firmicutes. Inactivation of Bacillus subtilis Ecs causes pleiotropic changes in the bacterial phenotype including inhibition of intramembrane proteolysis. The molecule(s) transported by Ecs is (are) still...
Hai-Rong Lu et al.
Antimicrobial agents and chemotherapy, 57(4), 1872-1881 (2013-02-06)
Lysostaphin is a peptidoglycan hydrolase secreted by Staphylococcus simulans. It can specifically lyse Staphylococcus aureus and is being tested as a novel antibacterial agent. The protein contains an N-terminal catalytic domain and a C-terminal cell wall targeting domain. Although the...
Igor Belyansky et al.
The American surgeon, 77(8), 1025-1031 (2011-09-29)
Mesh and wound infections during hernia repair are predominantly caused by Staphylococcus aureus. Human acellular dermis (HAD) is known to lose its integrity in the face of large bacterial loads. The goal of this study was to determine if lysostaphin...
Thomas S Lawson et al.
Journal of clinical laboratory analysis, 25(5), 359-365 (2011-09-16)
Aspects of the fluorescence in situ hybridization (FISH) method for the detection of clinically important bacteria, such as Staphylococcus aureus, Staphylococcus epidermidis, and Escherichia coli, were investigated for optimization. Various approaches to optimizing the FISH procedure were taken and different...
Yuliya Yurko et al.
Surgical innovation, 19(1), 20-26 (2011-07-12)
Naturally occurring antimicrobial peptides are possibly the "next frontier" in infection prevention. Binding them to mesh could reduce the rate of mesh infections. This study identifies an antimicrobial agent capable of significant antibacterial activity when bound to mesh. Lysozyme, human...
Shaw R Gargis et al.
Applied and environmental microbiology, 76(20), 6944-6946 (2010-08-24)
Resistance to lysostaphin, a staphylolytic glycylglycine endopeptidase, is due to a FemABX-like immunity protein that inserts serines in place of some glycines in peptidoglycan cross bridges. These modifications inhibit both binding of the recombinant cell wall targeting domain and catalysis...
Johannes Zander et al.
Infection and immunity, 76(4), 1333-1339 (2007-12-28)
Thymidine-dependent small-colony variants (SCVs) of Staphylococcus aureus are frequently associated with persistent and recurrent infections in cystic fibrosis patients. The phenotypic appearance of S. aureus SCVs or normal-colony variants (NCVs) is postulated to be affected by the intracellular amount of...
P A Recsei et al.
Proceedings of the National Academy of Sciences of the United States of America, 84(5), 1127-1131 (1987-03-01)
A 1.5-kilobase-pair fragment of DNA that contains the lysostaphin gene from Staphylococcus simulans and its flanking sequences has been cloned and completely sequenced. The gene encodes a preproenzyme of Mr 42,000. The NH2-terminal sequence of the preproenzyme is composed of...
Mathias Schmelcher et al.
Applied and environmental microbiology, 78(7), 2297-2305 (2012-01-31)
Staphylococci cause bovine mastitis, with Staphylococcus aureus being responsible for the majority of the mastitis-based losses to the dairy industry (up to $2 billion/annum). Treatment is primarily with antibiotics, which are often ineffective and potentially contribute to resistance development. Bacteriophage...
Mohammad Mehdi Feizabadi et al.
Journal of microbiological methods, 84(1), 144-146 (2010-11-17)
A modified pulsed-field gel electrophoresis (PFGE) protocol was developed and applied to clinical isolates of Staphylococcus aureus and enterococci to reduce the cost of using lysostaphin. This protocol reduces the expenses of PFGE typing of S. aureus and enterococci as...

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