Antimicrobial Susceptibility of ESBL Genes in K. pneumoniae and E. coli

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Journal name: The Malaysian Journal of Medical Sciences
Original article title: Antimicrobial Susceptibility of Klebsiella pneumoniae and Escherichia coli with Extended-Spectrum β-lactamase associated Genes in Hospital Tengku Ampuan Afzan, Kuantan, Pahang
The Malaysian Journal of Medical Sciences (MJMS) is a peer-reviewed, open-access journal published online at least six times a year. It covers all aspects of medical sciences and prioritizes high-quality research.
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Original source:

This page is merely a summary which is automatically generated hence you should visit the source to read the original article which includes the author, publication date, notes and references.

Author:

Saleh Mahdi Yahya Mohsen, Hairul Aini Hamzah, Mustafa Muhammad Imad Al-Deen, Roesnita Baharudin


The Malaysian Journal of Medical Sciences:

(A peer-reviewed, open-access journal)

Full text available for: Antimicrobial Susceptibility of Klebsiella pneumoniae and Escherichia coli with Extended-Spectrum β-lactamase associated Genes in Hospital Tengku Ampuan Afzan, Kuantan, Pahang

Year: 2016

Copyright (license): CC BY 4.0


Download the PDF file of the original publication


Summary of article contents:

1) Introduction

The prevalence of antibiotic-resistant bacteria, particularly extended-spectrum β-lactamase (ESBL)-producing Klebsiella pneumoniae and Escherichia coli, poses a significant healthcare challenge globally. This study assesses the antimicrobial susceptibility of ESBL-producing isolates collected from patients at Hospital Tengku Ampuan Afzan (HTAA) in Malaysia, seeking to elucidate the mechanisms of resistance and prevalence of specific ESBL genes. As antibiotic resistance continues to escalate, understanding local resistance patterns is crucial for effective treatment strategies and infection management.

2) Significant Findings: High Rates of CTX-M β-Lactamase

The study revealed that piperacillin/tazobactam and carbapenems remained the most effective β-lactam antibiotics against the tested strains of K. pneumoniae and E. coli. ESBL production was present in 35.5% of K. pneumoniae isolates and 18.8% of E. coli strains. Notably, CTX-M-type β-lactamase genes were identified in 90% of the ESBL-positive isolates, while blaSHV and blaTEM genes were found in 56% and 52% of the isolates, respectively. Additionally, a significant portion of the ESBL-positive strains harbored multiple ESBL genes, indicating the potential for increased resistance and complicating treatment options.

3) Conclusion

In conclusion, the findings of this study underscore the alarming prevalence of ESBL-producing bacteria in clinical isolates, with a pronounced presence of CTX-M genes. The high rates of resistance determinants raise concerns about the effectiveness of current antibiotic treatments and emphasize the necessity for ongoing surveillance and monitoring. Implementing robust antibiotic stewardship programs and characterizing resistance mechanisms will be essential in curbing the spread of these resistant strains, ultimately improving patient outcomes and public health.

FAQ section (important questions/answers):

What is the aim of the study on ESBL-producing bacteria?

The study aims to assess the antimicrobial susceptibility of extended-spectrum β-lactamase- (ESBL-) producing Klebsiella pneumoniae and Escherichia coli isolates from Hospital Tengku Ampuan Afzan (HTAA) and to identify the specific ESBL genes present in these isolates.

How were the bacterial isolates collected for the study?

A total of 259 non-duplicate E. coli and K. pneumoniae isolates were collected from various clinical samples at HTAA, derived from blood, urine, and swabs, covering both inpatients and outpatients.

What methods were used to test antimicrobial susceptibility?

Antimicrobial susceptibility was tested using the Kirby-Bauer disc diffusion method, following Clinical and Laboratory Standards Institute (CLSI) guidelines, which involved various antibiotics to assess the resistance of the isolates.

What were the findings regarding ESBL gene prevalence?

The study found that 35.5% of K. pneumoniae and 18.8% of E. coli isolates were ESBL-positive, with the CTX-M gene being the most prevalent in 90% of these isolates.

Glossary definitions and references:

Scientific and Ayurvedic Glossary list for “Antimicrobial Susceptibility of ESBL Genes in K. pneumoniae and E. coli”. 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) Table:
Table refers to a structured arrangement of data, typically presented in rows and columns. In scientific research, tables are crucial for organizing results, making it easier for readers to access and interpret the findings efficiently. They provide a clear and concise way to compare different data points or conditions observed in a study.

2) Antibiotic (Antibacterial):
An antibiotic is a substance that can kill or inhibit the growth of bacteria and is commonly used in medicine to treat bacterial infections. Antibiotics have played a vital role in reducing mortality rates from infectious diseases. However, the emergence of antibiotic resistance poses a significant challenge to public health globally.

3) Beta:
Beta often refers to beta-lactam antibiotics, which are characterized by their beta-lactam ring in their molecular structure. These include penicillins and cephalosporins. Among various functions, beta-lactamases are enzymes produced by bacteria that provide resistance against these antibiotics, complicating treatment options and requiring ongoing research into resistance mechanisms.

4) Study (Studying):
A study is a systematic investigation aimed at discovering or interpreting facts. In the medical context, studies like randomized trials, observational research, or laboratory experiments help guide clinical practices, suggesting effective treatments or revealing trends in health issues, ultimately leading to improved healthcare practices and outcomes for patients.

5) Drug:
A drug is a chemical substance used to diagnose, cure, treat, or prevent disease. In the context of antibiotics and microbial resistance, understanding the efficacy of drugs against resistant bacteria is essential. The development and proper use of pharmaceuticals are critical for effective disease management in healthcare settings.

6) Water:
Water is essential for life and is a vital component of the environment. The presence of antibiotic-resistant bacteria in water bodies raises concerns about ecological and public health. Studies investigating the effects of water quality on bacterial populations contribute to understanding the transmission pathways of resistance and potential impacts on human health.

7) Sharman (Sarma, Sharma, Sarman):
Sharma is a common surname in India; in the context of scientific research, it often appears in studies and publications. Researchers named Sharma may focus on microbiology, public health, or antibiotic resistance, contributing valuable findings to the knowledge base surrounding resistances in bacteria, particularly in the Indian healthcare system.

8) India:
India is a country in South Asia known for its diverse population and wide-ranging health challenges, including the high prevalence of antibiotic-resistant bacteria. Understanding the patterns of antimicrobial resistance in India is essential for developing effective public health strategies and shaping antibiotic policy, impacting global health significantly.

9) Blood:
Blood is a vital liquid tissue in the body responsible for transporting oxygen, nutrients, and waste. In a medical context, blood infections caused by resistant bacteria such as ESBL-producing strains can lead to severe health outcomes. Monitoring resistance patterns in blood isolates is crucial for effective treatment and patient care.

10) Cina:
China is the most populous country and a major focus of antimicrobial resistance research due to its rapid industrialization and urbanization impacting public health. The study and characterization of ESBL-producing bacteria in China contribute to understanding resistance patterns and inform global strategies for combating bacterial infections effectively.

11) Transmission:
Transmission refers to how infectious diseases spread from one host or environment to another. Understanding the transmission routes, especially for antibiotic-resistant bacteria, is critical in controlling outbreaks. Effective strategies for monitoring and preventing transmission are essential to safeguard public health and manage antibiotic-resistant infections in communities.

12) Species:
Species denotes a group of organisms capable of interbreeding and producing fertile offspring. In the context of antibiotic resistance, identifying specific bacterial species, such as Klebsiella pneumoniae or Escherichia coli, is crucial for understanding their resistance mechanisms, epidemiology, and developing targeted approaches to treat infections caused by these organisms.

13) Surface:
Surface can refer to external layers of environments such as water bodies, which may be contaminated with bacteria. Surface contamination studies help identify reservoirs of antibiotic-resistant bacteria. Understanding environmental impacts on resistance dissemination is essential for public health and can inform necessary interventions to minimize these risks.

14) Indian:
Indian refers to citizens of India or things pertaining to India, including culture, history, and research. In medical research, Indian populations are often studied to understand regional health issues, particularly regarding infectious diseases and resistance patterns, informing both local and global public health responses to antibiotic resistance.

15) Rules:
Rules in a scientific context refer to established guidelines and protocols that dictate how studies should be conducted and data interpreted. Adhering to rules set by organizations like the Clinical and Laboratory Standards Institute ensures the reliability and validity of microbiological testing results, crucial in assessing antibiotic susceptibility accurately.

16) Evolution:
Evolution in biological terms refers to the changes in organisms over generations. In antibiotic resistance studies, understanding the evolution of bacteria helps uncover how resistant traits arise and spread. This knowledge is critical in developing strategies for combating the emergence and dissemination of resistant bacterial strains in clinical settings.

17) Teaching:
Teaching refers to the act of imparting knowledge or skills. In the medical field, effective teaching methods are essential for training healthcare professionals about antimicrobial resistance. This education helps ensure that future practitioners understand the implications of resistance and contribute to better stewardship of antibiotics and patient care.

18) Nature:
Nature, in this context, describes the inherent characteristics and behaviors of living organisms and ecosystems. A deep understanding of nature helps researchers study bacterial behavior, including resistance mechanisms. Insights into environmental influences on resistance can inform public health strategies addressing the spread of resistant microorganisms in the natural world.

19) Alder:
Alder may refer to an author's name, possibly linked to antibiotic resistance research. Recognition of contributions made by researchers like Alder is essential for fostering innovation and advancing scientific knowledge. Their studies often influence healthcare policies and practices, particularly in understanding microbial resistance and informing treatment guidelines.

20) Thong:
Thong is a surname of individuals contributing to scientific research, potentially focusing on microbiology or public health. Studies authored by researchers with this last name contribute to understanding antibiotic resistance. Recognition of their work enriches the collective understanding of global health challenges and informs strategies to combat resistant bacteria.

21) Nila:
Neela is a common Indian name and may refer to a researcher or author connected to studies on antimicrobial resistance. Contributions from individuals named Neela in the scientific community enhance knowledge of bacterial resistance patterns, influencing public health policies and guiding appropriate responses to infectious disease challenges.

22) Sah:
Shah is a common surname in many cultures, including South Asian communities. In a scientific context, individuals with this surname may contribute research insights, particularly in microbiology and antibiotic resistance. Their findings are essential for understanding the dynamics of resistance and shaping effective therapeutic approaches.

23) Line:
Line refers to a sequence or a boundary in various contexts. In microbiology, a line of resistance may describe the threshold at which a bacterium develops resistances to antibiotics. Understanding these lines is crucial to assess the effectiveness of treatments and developing strategies to manage resistance trends in pathogen populations.

24) Performance:
Performance in a scientific context often evaluates how well a treatment, drug, or method works under specified conditions. Evaluating the performance of antibiotics against resistant strains informs clinicians about the most effective options available, guiding treatment decisions and improving patient care outcomes in the face of antimicrobial resistance.

25) Discussion:
Discussion is a critical section in research articles where authors interpret their findings, place them in context within existing literature, and address implications for practice or further research. It facilitates a deeper understanding of results, highlighting significance, limitations, and suggesting future directions to address ongoing public health issues.

26) Mutation:
Mutation denotes a change in the DNA sequence of an organism, which can lead to variations that might confer advantageous traits, such as antibiotic resistance. Studying mutations in bacteria helps researchers understand how resistance arises and spreads, guiding efforts to develop effective treatments and preventative measures against infections.

27) Quality:
Quality in research refers to the reliability and validity of data and methodologies applied in studies. Ensuring high-quality data collection and analysis is fundamental for drawing accurate conclusions, particularly in antibiotic resistance studies where implications extend to public health policies and clinical guidelines aimed at combating infections.

28) Habitat:
Habitat refers to the natural environment where organisms live. In the context of antibiotic resistance, understanding bacterial habitats helps researchers identify how resistance genes persist and spread in various ecosystems. Conservation of habitats and monitoring environmental impacts are vital for managing antimicrobial resistance effectively.

29) Science (Scientific):
Science embodies the systematic study of the natural world through observation and experimentation. Antibiotic resistance research falls under the umbrella of microbiology and public health sciences, where scientific findings are vital for understanding organism behavior, developing treatments, and informing health policies to combat infectious diseases effectively.

30) Purity:
Purity in a laboratory context often refers to the cleanliness and uncontaminated status of samples or results. In microbiological studies, ensuring purity is critical for accurate detection of antibiotic resistance. Contamination can skew results, leading to erroneous conclusions that may misinform healthcare practices and policies.

31) Animal:
Animal refers to living organisms within the kingdom Animalia, which includes diverse species. In antibiotic resistance studies, understanding the role of animals, particularly in agricultural contexts, is crucial as they can act as reservoirs for resistant bacteria. This knowledge informs practices to mitigate risks to human health from zoonotic transmissions.

32) Food:
Food represents any nutritious substance consumed to sustain health and growth. In the context of antibiotic resistance, food safety is paramount to preventing the transfer of resistant organisms from animals to humans. Monitoring antibiotic use in food production systems is essential to curb resistance proliferation in the food chain.

33) Post:
Post may refer to various uses, such as documentation of findings after study completion. In scientific literature, post results discuss the implications of research outcomes. Understanding the post-application of findings is important for informing stakeholders, shaping guidelines, and addressing real-world challenges related to antibiotic resistance.

Other Science Concepts:

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Discover the significance of concepts within the article: ‘Antimicrobial Susceptibility of ESBL Genes in K. pneumoniae and E. coli’. Further sources in the context of Science might help you critically compare this page with similair documents:

Disc diffusion method, Zone of inhibition, Antimicrobial Resistance, Escherichia coli, Urinary tract infection, Antibiotic resistance, Molecular characterization, Multidrug resistant bacteria, Klebsiella pneumoniae, Tertiary care hospital, Clinical microbiology, Growth inhibition, Antimicrobial susceptibility testing, Molecular analysis, PCR amplification, Multidrug-resistant, Extended Spectrum Beta-Lactamase, Nosocomial infection, Antimicrobial susceptibility, Antimicrobial resistance trends, Clinical Specimen, Geographic distribution, Carbapenem resistant Klebsiella pneumoniae, Multidrug-resistant Strains, Beta lactam antibiotic, Beta-Lactamase, Extended-Spectrum Beta-Lactamases (ESBL), Intra Abdominal Infections, Healthcare-associated infection, BlaTEM gene, BlaSHV gene, Epidemiological profile, Carbapenem resistance, Antibiotic usage, Carbapenems, Carbapenem resistant, Genetic determinants, Clinical sample, ESBL-producing isolates, Community-acquired infection, High selective pressure, Molecular epidemiology, Aquatic system, Surveillance of antibiotic resistance, Multidrug resistant Klebsiella pneumoniae, Characterization of isolate, Beta-lactamase producing, ESBL producers, ESBL producing bacteria, Resistance gene, Eppendorf tube.

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