MULTIDRUG RESISTANCE PROFILES OF CLINICAL AND ENVIRONMENTAL ISOLATES OF PSEUDOMONAS AERUGINOSA AND ESCHERICHIA COLI
ABSTRACT
The emergence of multiple antibiotic resistance in bacteria and the indiscriminate use of antibiotics contribute to the dissemination of resistant pathogens in the environment which may cause problems in therapy and is a serious public health issue. This study was conducted to determine the incidence of Pseudomonas aeruginosa and E.coli isolates in certain clinical and environmental samples as well as to determine the susceptibility patterns of these isolates to some commonly used antibiotics. The organisms were isolated using standard microbiological techniques and the antibiotic susceptibility was determined using disc diffusion method while plasmid curing was done using sodium dodecyl sulphate (SDS).
The result of this studies showed that most of the clinical and environmental isolates were more resistant to amoxacillin and augumentin but clinical isolates showed higher resistance. It was also observed that clinical isolates showed least resistance to gentamycin, ofloxacin, and ciprofloxacin; similar least resistance were observed in environmental samples with gentamycin and ciprofloxacin. There was a significant difference (P≥ 0.05) in the percentage resistance between the clinical and environmental isolates. Thirteen isolates that were resistant to more than seven antibiotics were subjected to plasmid curing using 1% and 5% SDS. It was observed that at treatment with 1% SDS some of the isolates became resistant to more than one antibiotic; when SDS was increased to 5%, some of the isolates that were resistant become completely sensitive to all the antibiotics used.
However, one of the P.aeruginosa that was initially sensitive to chloramphenicol became completely resistant at 5% SDS and another isolate of P.aeruginosa that was initially sensitive to septrin, sparfloxacin and ciprofloxacin became completely resistant at 1% and 5% SDS. This study indicates that P.aeruginosa and E.coli isolated from clinical samples were more resistant to antibiotics than those isolated from environmental samples. It has as well shown that there may be a possible transfer of resistance from one strain to another.
CHAPTER ONE
1.0 Introduction And Literature Review
1.1 Introduction
The discovery of antibacterial agents had a major impact on the rate of survival from infections. However, the changing patterns of antimicrobial resistance caused a demand for new antibacterial agents. Therefore, the emergence of bacterial resistance to most of the commonly used antibiotics is of considerable medical significance (Khan and Malik, 2001; Oteo et al., 2002).
Antibiotic resistance genes in most bacteria are frequently found in extra chromosomal elements known as R-plasmids. Pseudomonas aeruginosa is naturally resistant to many of the widely used antibiotics, so chemotherapy is often difficult (Dubois et al., 2001).
Resistance is due to a resistance transfer plasmid (R-plasmid) which is a plasmid carrying gene encoding proteins that detoxify various antibiotics (Poole, 2004). Antibiotic resistant bacteria are widespread. Several antibiotic resistant genes can be carried by a single R-plasmid or alternatively, a cell may contain several R plasmids. In either case, the result is multiple resistance (Madigan et al., 2009).
Escherichia coli is a Gram negative bacterium and the main aerobic commensalbacterial species (Alhaj et al., 2007; Von and Marre, 2005). The native habitat of Escherichia coli is the enteric tract of humans and other warm-blooded animals. Therefore, Escherichia coli is widely disseminated in the environment through the faeces of humans and otheranimals and its presence in water is generally considered to indicate faecal contamination and the possible presence of enteric pathogens. Esherichia coli is able to acquire antibiotic resistance easily. Antibiotic resistant Esherichia coli may pass on the genes responsible for antibiotic resistance to other species of bacteria, such as Staphylococcus aureus, through a process called horizontal gene transfer (Dubois et al., 2001).
CHAPTER TWO
2.0 Literature Review
2.1 Introduction
The review of relevant literature is the main topic of this chapter. A literature review covers theoretical and methodological contributions to a certain issue in addition to the state of knowledge at the time of writing. It provides information about the state of the art in relation to the subject you are writing about. It examines the body of work on the chosen subject. The literature evaluation in this study comprises the …
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TABLE OF CONTENTSPRELIMINARY PAGES
- Title page
- Approval page
- Dedication
- Acknowledgement
- Table of Contents
- Abstract
INTRODUCTION
- 1.1 Introduction
- ⋮
LITERATURE REVIEW
- 2.1 Introduction
- ⋮
CHAPTER THREE
MATERIALS AND METHODS
- 3.1 Introduction
- ⋮
CHAPTER FOUR
RESULTS AND DISCUSSION
- 4.1 Introduction
- 4.2 Results
- ⋮
- 4.3 Discussion of Findings
CHAPTER FIVE
SUMMARY, CONCLUSION AND RECOMMENDATION
- 5.1 Introduction
- 5.2 Summary
- 5.3 Conclusion
- 5.4 Recommendation
REFERENCES
Disclaimer for Complete Material Utilization
The displayed research work titled "Multidrug Resistance Profiles of Clinical and Environmental Isolates of Pseudomonas Aeruginosa and Escherichia Coli" is stated as a research guideline towards accomplishing your assigned project / seminar research work. All the research materials on this website are ONLY for research purposes and should be used as a guideline in developing your research work. For no reason should you copy word for word as projectlist.com.ng will not be liable for any who copied the material. By ordering the complete research guideline, it signifies that you've accepted our terms of service.
PRELIMINARY PAGES
- Title page
- Approval page
- Dedication
- Acknowledgement
- Table of Contents
- Abstract
INTRODUCTION
- 1.1 Introduction
- ⋮
LITERATURE REVIEW
- 2.1 Introduction
- ⋮
CHAPTER THREE
MATERIALS AND METHODS
- 3.1 Introduction
- ⋮
CHAPTER FOUR
RESULTS AND DISCUSSION
- 4.1 Introduction
- 4.2 Results
- ⋮
- 4.3 Discussion of Findings
CHAPTER FIVE
SUMMARY, CONCLUSION AND RECOMMENDATION
- 5.1 Introduction
- 5.2 Summary
- 5.3 Conclusion
- 5.4 Recommendation
REFERENCES
Disclaimer for Complete Material Utilization
The displayed research work titled "Multidrug Resistance Profiles of Clinical and Environmental Isolates of Pseudomonas Aeruginosa and Escherichia Coli" is stated as a research guideline towards accomplishing your assigned project / seminar research work. All the research materials on this website are ONLY for research purposes and should be used as a guideline in developing your research work. For no reason should you copy word for word as projectlist.com.ng will not be liable for any who copied the material. By ordering the complete research guideline, it signifies that you've accepted our terms of service.
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