Detection of ESBL, MBL, and AmpC in MDR and PDR Pseudomonas spp.
Journal name: World Journal of Pharmaceutical Research
Original article title: Esbl, mbl and ampc detection in multidrug resistant pseudomonas aeruginosa (mdrpa) and pandrug resistant pseudomonas aeruginosa (pdrpa) isolated in tertiary care hospital
The WJPR includes peer-reviewed publications such as scientific research papers, reports, review articles, company news, thesis reports and case studies in areas of Biology, Pharmaceutical industries and Chemical technology while incorporating ancient fields of knowledge such combining Ayurveda with scientific data.
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Vijay Mane, A D Urhekar and Nitin Goel Insan
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World Journal of Pharmaceutical Research:
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Full text available for: Esbl, mbl and ampc detection in multidrug resistant pseudomonas aeruginosa (mdrpa) and pandrug resistant pseudomonas aeruginosa (pdrpa) isolated in tertiary care hospital
Source type: An International Peer Reviewed Journal for Pharmaceutical and Medical and Scientific Research
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Summary of article contents:
Introduction
Pseudomonas aeruginosa is a significant cause of nosocomial infections, presenting a severe public health concern due to the alarming rise in antibiotic resistance. Various beta-lactamases, including Extended-Spectrum Beta-Lactamases (ESBLs), AmpC beta-lactamases, and Metallo-beta-lactamases (MBL), have emerged as critical mechanisms of resistance among gram-negative bacteria, complicating treatment options and posing substantial challenges in healthcare settings.
Resistance Mechanisms and Detection
The production of beta-lactamases enables Pseudomonas aeruginosa to inactivate beta-lactam antibiotics, thereby undermining therapeutic efficacy. The study utilized several detection methods for these enzymes, including the three-dimensional method for AmpC beta-lactamase and the combined disc diffusion method for ESBL and MBL detection. High levels of resistance were observed in the isolates, highlighting the need for effective testing and identification of these resistant strains.
Prevalence of Multidrug-Resistant Strains
Among the clinical isolates studied, a notable prevalence of multidrug-resistant (MDR) and pandrug-resistant (PDR) Pseudomonas aeruginosa was documented. The study found 13% of isolates to be MDR, with a striking 4% being PDR, which represents strains resistant to all available antibiotics. This alarming trend underscores the critical situation in clinical settings, especially in intensive care units, where such resistant strains pose significant treatment challenges.
Co-production of Beta-lactamases
The study also revealed high rates of co-production of beta-lactamase enzymes among multidrug-resistant isolates. Specifically, 56% of MDR strains were positive for AmpC beta-lactamase, while 57% produced ESBLs. In PDR strains, 86% produced both AmpC and ESBLs, and all were confirmed MBL producers. The co-existence of these resistance mechanisms further complicates treatment strategies and highlights the need for comprehensive surveillance and management approaches.
Conclusion
The study accentuates the high prevalence of multidrug-resistant and pandrug-resistant Pseudomonas aeruginosa with diverse beta-lactamase production. This critical finding calls for the implementation of stringent antibiotic policies and restrictions on the indiscriminate use of key antibiotic classes to mitigate the emergence and spread of these formidable pathogens, ultimately safeguarding public health.
FAQ section (important questions/answers):
What is the significance of Pseudomonas aeruginosa in infections?
Pseudomonas aeruginosa is a major cause of nosocomial infections, particularly in intensive care units. Its multidrug-resistant (MDR) and pandrug-resistant (PDR) strains present serious therapeutic challenges and complicate treatment options.
What types of beta-lactamases are discussed in the study?
The study focuses on Extended-Spectrum Beta-Lactamases (ESBL), AmpC beta-lactamases, and Metallo-beta-lactamases (MBL), which are critical mechanisms of resistance among gram-negative bacteria like Pseudomonas aeruginosa.
How are AmpC and ESBL detected in Pseudomonas aeruginosa?
AmpC beta-lactamase is detected using the AmpC disc test, while ESBL is identified through the combined disk diffusion method, assessing zone diameter changes when using specific antibiotics.
What percentages of MDR and PDR strains produce AmpC beta-lactamase?
In the study, 56% of MDR Pseudomonas aeruginosa and 86% of PDR Pseudomonas aeruginosa strains are confirmed to be positive for AmpC beta-lactamase.
What is the rate of pandrug-resistant Pseudomonas aeruginosa observed?
The study finds that 7 out of 190 isolates, or approximately 3.68%, of Pseudomonas aeruginosa strains were pandrug-resistant, highlighting a concerning trend in antibiotic resistance.
Why is antibiotic policy crucial according to the study's findings?
The high prevalence of multidrug-resistant and pandrug-resistant Pseudomonas aeruginosa necessitates strict antibiotic policies to restrict the indiscriminate use of cephalosporins and carbapenems, minimizing the emergence of these resistance mechanisms.
Glossary definitions and references:
Scientific and Ayurvedic Glossary list for “Detection of ESBL, MBL, and AmpC in MDR and PDR Pseudomonas spp.”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.
1) Antibiotic (Antibacterial):
Antibiotics are substances used to treat bacterial infections by inhibiting the growth or killing bacteria. In the context of Pseudomonas aeruginosa resistance, the effectiveness of various antibiotics, especially beta-lactams, is compromised due to the emergence of resistant strains, necessitating careful monitoring and stewardship of antibiotic use in medical settings.
2) Drug:
In pharmacology, a drug refers to any substance that causes a physiological effect when introduced into the body. The study highlights the growing issue of drug resistance among Pseudomonas aeruginosa strains, particularly concerning multidrug-resistant (MDR) and pandrug-resistant (PDR) varieties, which complicates treatment regimens in healthcare environments.
3) Quality:
Quality in healthcare, particularly in laboratory testing, pertains to the accuracy and reliability of test results used to diagnose and treat infections. The study underscores the need for high-quality testing methods to detect beta-lactamase enzymes in Pseudomonas aeruginosa, which is crucial for effective infection management and antibiotic selection.
4) Discussion:
Discussion in research refers to the section where results are interpreted, compared with existing literature, and implications are analyzed. This study includes a discussion of the prevalence of resistance mechanisms and highlights the importance of understanding the dynamics of antibiotic resistance to improve clinical outcomes in treating infections.
5) Science (Scientific):
Science is the systematic study of the structure and behavior of the physical and natural world through observation and experimentation. The research on multidrug-resistant Pseudomonas aeruginosa contributes to the scientific understanding of microbial resistance, informing practices in microbiology, pharmacology, and public health to combat infections effectively.
6) Ambala:
Ambala is a city in the Indian state of Haryana, noted for its educational and healthcare institutions. The involvement of MM Institute of Medical Sciences and Research in Ambala in the study indicates the local context of antibiotic resistance research, representing a significant contribution to understanding and addressing public health challenges in India.
Other Science Concepts:
Discover the significance of concepts within the article: ‘Detection of ESBL, MBL, and AmpC in MDR and PDR Pseudomonas spp.’. Further sources in the context of Science might help you critically compare this page with similair documents:
Disc diffusion method, Antibiotic resistance, Treatment option, Intensive care unit, Clinical isolate, Therapeutic option, Health care setting.