- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05642767
Molecular Detection Of Efflux Pump and Virulence Factors Genes in Pseudomonas Aeruginosa (Pseudomonas)
Study Overview
Status
Conditions
Detailed Description
The pathogenesis of PA infections is multifactorial, and it is frequently complicated by the bacteria's intrinsic resistance to some antimicrobial agents such as sulfonamides, tetracyclines, and trimethoprim, as well as its ability to acquire or quickly develop resistance to major classes of antibiotics such as aminoglycosides, quinolones, B-lactams, and polymyxins (Bassetti et al., 2018).
The efflux systems, which mediate the expulsion of antibiotics out of the cell shortly after entry, the production of enzymes to inactivate antibiotics, and the decrease in permeability across the cell wall are some mechanisms used by PA to develop antimicrobial resistance (Meletis & Bagkeri, 2013).
PA possesses a large number of virulence factors that play a significant role in pathogenesis and the determination of infection severity. These virulence factors act alone or in synergy with each other to cause tissue damage, necrosis, and cell death. Among the virulence factors of PA, the major determinants of virulence are the type III secretion system (T3SS) and quorum sensing (cell-to-cell signaling system). The T3SS is a needle-like complex, also known as the injectisome, that enables a bacterium to deliver different effector proteins such as ExoS, ExoT, ExoU, and ExoY across the membrane into a host cell, altering host cell functions and increasing bacterial survival rates ( Horna G and, Ruiz J, 2021). In this study, we aimed to evaluate the prevalence of antibiotic resistance caused by the presence of Efflux genes and some virulence factors in Pseudomonas aeruginosa from clinical isolates.
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: Noha S Shafik, lecturer
- Phone Number: +20 01067261504
- Email: Nohasaber@med.sohag.edu.eg
Study Contact Backup
- Name: Nesma A Mohammed, lecturer
- Phone Number: +20 01006780725
- Email: Nesmaaateef@med.sohag.edu.eg
Study Locations
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Sohag, Egypt
- Recruiting
- Sohag University
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Contact:
- Noha S Shafik, Lecturer
- Phone Number: 01067261504
- Email: nohasaber@med.sohag.edu.eg
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Contact:
- Nesma A Mohamed, Lecturer
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
This study will be carried out on all patients suffering from infections that can be caused by pseudomonas aeruginosa.
Samples (pus, urine, blood, sputum, ear discharge) will be collected from different departments at sohag university hospital.
Clinical Data will be obtained as:
- Data about clinical manifestations including fever, expectoration, pus from wounds, urinary symptoms, symptoms of upper respiratory tract infections, and symptoms of otitis externa.
Description
Inclusion Criteria:
- All patients suffering from infections that can be caused by pseudomonas aeruginosa
Exclusion Criteria:
- Samples diagnosed to have organisms other than pseudomonas aeruginosa.
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Control
- Time Perspectives: Cross-Sectional
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Patients with pseudomonas aeruginosa infections
All patients suffer from infections that can be caused by pseudomonas aeruginosa. Clinical Data will be obtained as:
|
Samples will be inoculated on cetrimide agar using the plating out technique.
colonies on cetrimide agar will be spread on glass slide and stained by gram stain
Antibiotic sensitivity testing will be done by disc diffusion method according to CLSI
Molecular detection to efflux genes and some virulence genes by conventional PCR
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Patients with infections other than pseudomonas aeruginosa
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Samples will be inoculated on cetrimide agar using the plating out technique.
colonies on cetrimide agar will be spread on glass slide and stained by gram stain
Antibiotic sensitivity testing will be done by disc diffusion method according to CLSI
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Isolation and identification of pseudomonas aeruginosa using culture and automated system techniques
Time Frame: 1 December 2022 to 1 February 2023
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identification of pseudomonas aeruginosa in different clinical samples collected from Sohag University hospital using different laboratory techniques as culture on citramide agar, Staining with Gram, biochemical reactions such as Oxidase test, sugar fermentation test, and automated identification using vitek2 system
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1 December 2022 to 1 February 2023
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Identification of recent antibiotic sensitivity pattern using Modified Kerby -Disc Diffusion method
Time Frame: 1 December 2022 to 1 February 2023
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Determination of recent antibiotic sensitivity pattern using different antibiotics by disc diffusion method by spreading the inoculum in pitry dish containing Muller Hinton Agar, then different discs containing antibiotics are placed at a distance of 1.5 cm, then incubated at 37 co for 24 hrs.
The diameter of the zone of inhibition is measured to determine MIC for each antibiotic according to the guidelines of CSLI 2022.
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1 December 2022 to 1 February 2023
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Molecular Identification of some virulence factors and efflux genes using PCR
Time Frame: 1 February 2023 to 30 March 2023
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Molecular detection of some virulence factors and efflux genes using specific primers by conventional PCR.
primers of the following genes will be used as exoS,exoU, toxA, mex A, mex B. Extraction of DNA will be done first, followed by amplification technique using the thermal cycler.
Detection of amplified DNA will be done using Agrose gel electrophoresis stained with ethidium bromide.
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1 February 2023 to 30 March 2023
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Collaborators and Investigators
Sponsor
Investigators
- Study Chair: Mohamed H Alrawy, Faculty of Medicine, Sohag University
- Study Chair: Ebtisam M Gad, Faculty of Medicine, Sohag University
Publications and helpful links
Helpful Links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Soh-Med-22-11-18
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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