title: Resistotype heterogeneity of Escherichia coli strains isolated from humans, animals and sewage waters.
abstract: 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.
mesh_terms: 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
chemical_list: D000900:Anti-Bacterial Agents; D001149:Arsenates; D001888:Boric Acids; D012722:Sewage; D000167:Acriflavine; D003300:Copper; C009277:sodium arsenate; D019327:Copper Sulfate