gram-negative

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gram-negative

[′gram¦neg·əd·iv]
(microbiology)
Of bacteria, decolorizing and staining with the counterstain when treated with Gram's stain.
References in periodicals archive ?
Second, although the use of sulphonamides and trimethoprim decreased more than threefold during the study period, carriage of trimethoprim- and sulphonamide-resistant Gram-negative bacteria did not change.
ATI-1503 holds promise for treating these superbugs because it penetrates the double exterior membranes and attacks the protein generating machinery of Gram-negative bacteria.
Gram-negative bacteria are a class of pathogens that includes drug-resistant varieties of bacteria that cause pneumonia, sepsis and other deadly diseases.
Out of 60 gram-negative bacteria tested for ESBL, 28 strains were found MDDT- positive and 25 phenotypic confirmatory test-positive.
The interaction of lactoferrin with microbial surfaces, namely the outer membrane proteins of Gram-negative bacteria, is what triggers its antimicrobial mechanisms, such as the inhibition of microbial attachment to subepithelial matrix proteins and the detachment of bacteria from mucosal surfaces.
They expected that gram-negative bacteria would bind to the TWTCP and subtly change the wafer's color by their presence in its pores, whereas so-called gram-positive bacteria wouldn't bind because they don't contain lipid A.
Those bacterial isolates extracted from the surrounding waters were found to be most antibody-productive in accordance to health status results, and gram-positive bacteria, in comparison with the more populous gram-negative bacteria, were determined to have a negative effect on antibiotic production against the test organisms.
It's about antibiotics against Priority 1 Gram-negative bacteria. These antibiotics can be used to treat high-need infections, according to Oliver Zerbe, chief investigator of the project, in a press release.
Zavicefta has been granted approval in the treatment of adults with infections such as complicated intra-abdominal infection (cIAI), complicated urinary tract infection (cUTI) and Hospital-Acquired Pneumonia (HAP), including Ventilator Associated Pneumonia (VAP), that are caused by Gram-negative bacteria.
A large series of post-operative endophthalmitis from south India reported gram-negative bacteria accounted for 41.7 % cases of post-operative endophthalmitis followed by gram-positive bacteria (37.6 %) and fungi (21.8 %) whereas similar study from north India demonstrated fungi in 21.8 % cases of post-operative endophthalmitis followed by bacteria in 9.5 % and polymicrobial infection in 6.5 % cases.
Researchers investigated a class of bacteria called 'Gram-negative bacteria' which is particularly resistant to antibiotics because of its cells' impermeable lipid-based outer membrane.
It has antimicrobial activity, especially against gram-negative bacteria and fungi.

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