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Biomedical subjects

E Meyers

Publications and source records attributed to E Meyers.

35 records · Page 2Linked to original sources

Streptomyces laurentii, a new species producing thiostrepton.

The taxonomic description of Streptomyces laurentii, a new species related to but distinguishable from the S. fradiae group, is presented. This new species produces thiostrepton but bears no taxonomic relationship to the known producers of the antibiotic: S. azureus, S. hawaiiensis, and Streptomyces X-14b.

Anti-Bacterial Agents↗

Bioautographic technique for a rapid survey of microbial populations for the production of antibiotics and other metabolites.

A method is described for the detection of microorganisms capable of producing antibiotics or other metabolites. The microbial population under study was bioautographed against any desired indicator organism. This was easily accomplished by lifting the entire agar layer out of a petri dish on which the microbial population was grown and transferring it to an agar surface seeded with an indicator organism. The use of this technique in the search for metabolites other than antibiotics is pointed out. The advantages of the method, over previously reported methods, are discussed.

Anti-Bacterial Agents↗

Biological characterization of prasinomycin, a phosphorus-containing antibiotic.

Prasinomycin, a new antibiotic from the green spore streptomycete, Streptomyces prasinus, primarily inhibits the growth of gram-positive microorganisms. Like penicillin, it is effective only against growing cells. Though primarily bacteriostatic at levels about the minimal inhibitory concentration, it is bactericidal at higher levels. Neither synergism nor antagonism could be demonstrated for prasinomycin with a variety of other antibiotics. It is highly active upon subcutaneous administration to mice infected with Staphylococcus aureus, Streptococcus pyogenes C203, or Diplococcus pneumoniae. Prasinomycin has a unique prophylactic action whereby one dose protects mice against experimental infections for as long as 2 months. It is more effective against S. aureus infections in mice when administered subcutaneously 20 hr prior to infection than when given in divided doses 1 hr before and 4 hr after infection.

Anti-Bacterial Agents↗