• THAKUR RAMESHWARI ProfessorDepartment of MicrobiologyMuzaffarnagar Medical CollegeMuzaffarnagar- 241203, UP, India
  • Kumar Atul
  • Chaudhary Varsha
  • Singh Paramjit
  • Sharma Vk
  • Nidhi Agarwal


Objective: Urinary tract infections are considered among the most common infections, occurring either in the community or health-care setting. We are left with very few options for the treatment due to rapid development of antibiotic resistance among the organisms. To find out the prevalence of various types of β-lactamases among urinary isolates.

Methods: Seven antibiotic discs (HiMedia) were placed in combinations and approximation in a particular sequence on a 90 mm diameter MuellerHinton
agar plate.

Results: Out of a total 165 urinary isolates, 66 (40%) isolates were positive for extended spectrum β-lactamase (ESBL) production, AmpC β-lactamases
(AmpC) activity was present in 31 (18.78%) isolates, co-production of both ESBL and AmpC was seen in 16 (9.69%) isolates, 3 (1.81%) isolates
produced metallo β-lactamase (MBL), 2 (1.21%) isolates produced both MBL, and ESBL and 1 (0.60%) isolates were positive for inducible third generation cephalosporin resistance.
Conclusion: With the presence of such high prevalence of various β-lactamases in clinical isolates of gram-negative bacilli and also other types of
antibiotic resistance, antibiotic policy should be made, and strict adherence should be followed.

Keywords: Extended spectrum β-lactamase, AmpC β-lactamase, Metallo β-lactamase.

Author Biography

THAKUR RAMESHWARI, ProfessorDepartment of MicrobiologyMuzaffarnagar Medical CollegeMuzaffarnagar- 241203, UP, India


Department of Microbiology



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How to Cite
RAMESHWARI, T., K. Atul, C. Varsha, S. Paramjit, S. Vk, and N. Agarwal. “PREVALENCE OF VARIOUS BETA LACTAMASES AMONG GRAM NEGATIVE BACILLI IN URINARY ISOLATES FROM PATIENTS IN A TERTIARY CARE HOSPITAL OF NORTHERN INDIA”. Asian Journal of Pharmaceutical and Clinical Research, Vol. 10, no. 4, Apr. 2017, pp. 129-32, doi:10.22159/ajpcr.2017.v10i4.16291.
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