Resistotype heterogeneity of Escherichia coli strains isolated from humans, animals and sewage waters.
The tests commonly used for bacterial identification, especially in the field of microbial environmental analyses frequently do not provide a sufficient strain differentiation. Considering the importance that accurate characterization of bacterial pollution indicators could have as epidemiological tools, this study used a resistogram subtyping method for Escherichia coli as a tentative method of effecting a good monitoring of the environmental spread of this microorganism. The resistance of 313 E. coli strains of different origin (human, animal, sewage), previously identified by standard biochemical reactions, to 8 chemical compounds (inorganic, organic and dyes) and to 7 antibiotics was tested. The results indicated this method has a higher discriminatory power for chemicals than for drugs. Some typical resistotype patterns for E. coli from various sources are described.
D000167:Acriflavine / Q000494:pharmacology; D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001149:Arsenates / Q000494:pharmacology; D001888:Boric Acids / Q000494:pharmacology; D003300:Copper / Q000494:pharmacology; D019327:Copper Sulfate; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000145:classification* / Q000187:drug effects; D005243:Feces / Q000382:microbiology*; D006801:Humans; D012722:Sewage; D013552:Swine
D000900:Anti-Bacterial Agents; D001149:Arsenates; D001888:Boric Acids; D012722:Sewage; D000167:Acriflavine; D003300:Copper; C009277:sodium arsenate; D019327:Copper Sulfate