Search results
Results from the WOW.Com Content Network
The bacteriocins from E. coli are called colicins (formerly called 'colicines', meaning 'coli killers'). These are the longest studied bacteriocins. They are a diverse group of bacteriocins and do not include all the bacteriocins produced by E. coli. In fact, one of the oldest known so-called colicins was called colicin V and is now known as ...
Cefixime is a broad spectrum cephalosporin antibiotic and is commonly used to treat bacterial infections of the ear, urinary tract, and upper respiratory tract. The following represents MIC susceptibility data for a few medically significant microorganisms: [15] Escherichia coli: 0.015 μg/mL – 4 μg/mL
Mecillinam or amdinocillin is an extended-spectrum penicillin antibiotic of the amidinopenicillin class that binds specifically to penicillin binding protein 2 (PBP2), [2] and is only considered to be active against Gram-negative bacteria.
It was developed in response to the growing rate of antibiotic resistant bacteria such as Staphylococcus aureus, Acinetobacter baumannii, and E. coli. [6] As a tetracycline derivative antibiotic, its structural modifications has expanded its therapeutic activity to include Gram-positive and Gram-negative organisms, including those of multi-drug ...
In his 1969 Nobel Laureate speech, Salvador E. Luria speculated that colicins could only be this toxic by causing a domino effect that destabilized the cell membrane. [9] He was not entirely correct, but pore-forming colicins do depolarize the membrane and thus eliminate the energy source for the cell. The colicins are highly effective toxins.
However, E. coli are extremely sensitive to such antibiotics as streptomycin or gentamicin. Recent research suggests treatment of enteropathogenic E. coli with antibiotics may significantly increase the chance of developing haemolytic-uremic syndrome. [12]
In clinical medicine, antibiotics are most frequently prescribed on the basis of a person's symptoms and medical guidelines.This method of antibiotic selection is called empiric therapy, [1] and it is based on knowledge about what bacteria cause an infection, and to what antibiotics bacteria may be sensitive or resistant. [1]
Escherichia coli bacteria on the right are sensitive to two beta-lactam antibiotics, and do not grow in the semi-circular regions surrounding antibiotics. E. coli bacteria on the left are resistant to beta-lactam antibiotics, and grow next to one antibiotic (bottom) and are less inhibited by another antibiotic (top).