[Emergence of the integron-positive multi-drug resistant strain of Acinetobacter baumanii in Russian hospitals].

Aim: To detect the integron-positive strains among nosocomial Acinetobacter spp. and to determine their relationship on the genotype level.

Materials And Methods: Amplification by polymerase chain reaction using primers specific to sequences of the class 1 and 2 intergrons on the genomic DNA template followed by restriction fragments length polymorphism analysis as well as RAPD-genotyping of the integron-positive strains were performed.

[RNAse activity as an indirect index of the enterotoxigenicity of staphylococci].

On the basis of investigations carried out there was revealed a direct relationship between the capacity of staphylococci to produce enterotoxin and the extent of their RNA-ase activity. The activity of RNA-ase can serve as a significant indirect sign pointing to the enterotoxigenicity of staphylococcus.