Related Experiment Video

Updated: Jun 30, 2026

Rapid and Specific Detection of Acinetobacter baumannii Infections Using a Recombinase Polymerase Amplification/Cas12a-based System
07:59

Rapid and Specific Detection of Acinetobacter baumannii Infections Using a Recombinase Polymerase Amplification/Cas12a-based System

Published on: April 25, 2025

Phenotypic Detection Methods, Clinical Outcomes, and Therapeutic Strategies for OXA-Type Carbapenemase-Producing

Pranay R Ullengala1, Ravindra V Shinde1, Satish R Patil1

  • 1Department of Microbiology, Krishna Institute of Medical Sciences, Krishna Vishwa Vidyapeeth (Deemed to be University), Karad, IND.

Cureus
|June 29, 2026
PubMed

Insights

Multidrug-resistant Acinetobacter baumannii, a major cause of hospital infections, is often resistant to carbapenems due to OXA-type beta-lactamases. New therapies are crucial for managing these severe infections.

Area of Science:

  • Clinical Microbiology
  • Infectious Diseases
  • Antimicrobial Resistance

Background:

  • Acinetobacter species are significant nosocomial pathogens, particularly Acinetobacter baumannii.
  • These bacteria cause severe infections like ventilator-associated pneumonia and bloodstream infections with high mortality rates.
  • Rapid development of multidrug resistance (MDR) complicates treatment in tertiary care settings.

Purpose of the Study:

  • To review the pathophysiology, virulence, clinical symptoms, and epidemiology of MDR Acinetobacter species.
  • To discuss laboratory challenges and methodologies for isolating and profiling resistant strains.
  • To evaluate clinical outcomes and therapeutic strategies for OXA-driven carbapenem resistance in India.

Main Methods:

  • Literature review focusing on OXA-type carbapenem-hydrolyzing class D beta-lactamases (CHDLs) and extended-spectrum beta-lactamases (ESBLs).
  • Analysis of laboratory diagnostic methods for isolation and characterization of resistant Acinetobacter.
  • Evaluation of clinical data and treatment outcomes from Indian intensive care units.

Main Results:

  • OXA-type CHDLs are a primary mechanism for beta-lactam resistance in Acinetobacter.
  • Specific laboratory techniques are essential for accurate identification of these resistant pathogens.
  • High prevalence of these resistant strains in Indian ICUs is associated with severe clinical outcomes.

Conclusions:

  • Effective management of MDR Acinetobacter requires understanding resistance mechanisms and clinical impact.
  • Tailored combination therapies and novel treatments like sulbactam-durlobactam show promise.
  • Urgent need for improved therapeutic strategies to combat severe OXA-driven infections.
Keywords:
acinetobacter baumanniiacinetobacter speciescarbapenemasesesblmultidrug resistance (mdr)oxa-type carbapenemases (chdls)sulbactam-durlobactam (sul-dur)

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