Results 111 to 120 of about 431,873 (162)
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Leukotoxins of gram-negative bacteria
Veterinary Microbiology, 2002Leukotoxins are a group of exotoxins that produce their primary toxic effects against leukocytes, especially polymorphonuclear cells (PMNs). Leukotoxins include a variety of chemicals ranging from 9,10-epoxy 12-octadecenoate, a fatty acid derivative secreted by leukocytes themselves, to proteins such as RTX (repeats in toxin).
Sanjeev Kumar, Narayanan +3 more
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Antibiotic uptake into gram-negative bacteria
European Journal of Clinical Microbiology & Infectious Diseases, 1988Antibiotics taken up into gram-negative bacteria face two major diffusion barriers, the outer and cytoplasmic membranes. Of these, the former has been most studied and is discussed in detail here. Evidence from antibiotic MIC studies on porin-deficient mutants compared with their porin-sufficient parent strains has provided strong support for the ...
R E, Hancock, A, Bell
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Resistance in gram-negative bacteria: Enterobacteriaceae
American Journal of Infection Control, 2006The emergence and spread of resistance in Enterobacteriaceae are complicating the treatment of serious nosocomial infections and threatening to create species resistant to all currently available agents. Approximately 20% of Klebsiella pneumoniae infections and 31% of Enterobacter spp infections in intensive care units in the United States now involve ...
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2001
The cell wall of Gram-negative bacteria has a very distinctive layered look under the electron microscope and is dramatically different from the Gram-positive cell wall. The inner layer consists of a thin peptidoglycan layer; the outer layer or outer membrane is a protein containing bilayer.
Robert P. Rapp, Kenneth E. Record
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The cell wall of Gram-negative bacteria has a very distinctive layered look under the electron microscope and is dramatically different from the Gram-positive cell wall. The inner layer consists of a thin peptidoglycan layer; the outer layer or outer membrane is a protein containing bilayer.
Robert P. Rapp, Kenneth E. Record
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Resistance mechanisms in Gram-negative bacteria
Medicina Intensiva (English Edition), 2022Enterobacterales resistant to carbapenems or producing extended-spectrum β-lactamases (ESBL) and non-fermenters resistant to carbapenems present resistance to many of the antimicrobials commonly used in clinical practice, and have been recognized by the World Health Organization as a critical priority for the development of new antimicrobials.
Lepe, José A. +1 more
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Polysaccharides of Gram-Negative Bacteria
1961Publisher Summary This chapter discusses the polysaccharides of gram-negative bacteria. In Gram-negative bacteria, the general architecture of the outer layers of the cell seems to be consistent within the group. The cell wall is rarely exposed, but is generally covered by a somatic antigen’ that can be extracted as a protein-lipide-polysaccharide ...
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Corneal Rings With Gram-Negative Bacteria
Archives of Ophthalmology, 1977Corneal rings have been described with corneal ulcerations caused by Gram-negative bacteria. Corneal rings were produced by intracorneal injections of viable Pseudomonas aeruginosa as well as heat-inactivated suspensions of Gram-negative bacteria (P aeruginosa and Escherichia coli) but not Gram-positive bacteria (Staphylococcus aureus) or Freund's ...
B J, Mondino +4 more
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The Lipooligosaccharides of Pathogenic Gram-Negative Bacteria
Critical Reviews in Microbiology, 1996Lipooligosaccharides (LOSs) are the major glycolipids expressed on mucosal Gram-negative bacteria, including members of the genera Neisseria, Haemophilus, Bordetella, and Branhamella. They can also be expressed on some enteric bacteria such as Campylobacter jejuni and Campylobacter coli strains. LOS is analogous to the lipopolysaccharide (LPS) found in
A, Preston +3 more
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Non-fermentative Gram-negative bacteria
International Journal of Antimicrobial Agents, 2007Over the past decade, non-fermenting Gram-negative bacteria have emerged as important opportunistic pathogens in the increasing population of patients who are immunocompromised by their disease or medical treatment. These bacteria are assisted by their ubiquitous distribution in the environment and have a propensity for multiple, intrinsic or acquired ...
D A, Enoch, C I, Birkett, H A, Ludlam
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The Lysozyme Spectrum of the Gram-Negative Bacteria
Journal of Infectious Diseases, 1955containing lysozyme indicated that the enzyme is one of nature's defensive mechanisms. Lysozyme is currently associated with ulcerative conditions of the intestine. As a part of this syndrome, the role of lysozyme as it affects the ever-present gram-negative bacteria in the intestine is yet to be shown.
R G, PETERSON, S E, HARTSELL
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