Journal of Antimicrobial Chemotherapy (1987) 20, 383-387
© 1987 The British Society for Antimicrobial Chemotherapy
research-article |
Aminoglycoside resistance patterns in clinical isolates of Enterobacteriaceae from Czechoslovakia
Institute of Experimental Pharmacology, Centre for Physiological Sciences Slovak Academy of Sciences aNational Institute of Health Bratislava, Czechoslovakia
Received 28 February 1987;
Corresponding author: Dr Milan Kettner, Institute of Experimental Pharmacology, Centre for Physiological Sciences, Slovak Academy of Sciences, 842 16 Bratislava, Czechoslovakia.
Multi-resistant Enterobacteriaceae isolate mainly from urine specimens from patients at the Department of Urology, Kramáre Hospital, Bratislava, were characterized for resistance phenotype, Seventeen gentamicin-resistant isolates were further studied for the presence of aminoglycoside-modifying enzymes. Five enzymes were detected: AAC(2'), AAC(3)-II, AAC non-characterized, ANT(2'') and APH(3')-I. The substrate range of these enzymes was found to correlate with the resistance phenotype in most isolates, In our collection the AAC(3)-II enzyme that inactivates gentamicin, sisomicin, tobramycin and netilmicin was predominant. Predominance of this type of modifying enzyme has been observed also in resistant Gram-negative strains in Belgium, The Netherlands and Chile, in contrast to the United States, Federal Republic of Germany, Switzerland, Greece and Turkey, where ANT(2'')has been the most common enzyme.