Characterization of Enterococci

April 5, 2021 updated by: Ekram Abd El Rahman Mahmoud, Sohag University

Characterization of Enterococci; Distribution of Virulence Markers, Virulence Genes and Antibiotic Resistance Pattern of the Isolated Species

Study on Characterization of Enterococci because nowadays it become an important cause of nosocomial infections .detection of the most common two species of Enterococci and most common virulence factors & its genes with determination of antibiotics sensitivity test for the isolated strains

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
52

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
      • Sohag, Egypt
        • Sohag faculty of medicine

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

2 months to 90 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

N/A

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

patients in ICU in Sohag University Hospital

Description

Inclusion Criteria:

  • any patients in ICU has manifestations of urinary tract infections, surgical wound infections, intra-abdominal infections, intrapelvic infections, bacteraemia and infective endocarditis

Exclusion Criteria:

  • patients receiving antibiotics in previous 48 hours

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
I) Sample collection
Time Frame: 2 months
Samples are collected from intensive care unit (ICU) including urine, pus swabs, sputum, blood, tracheal aspirates and pharyngeal swabs
2 months
II) Identification of Enterococci:
Time Frame: 2 month

by inoculation on Bile esculin azide & growing colonies further identified by :

  1. microscopically after staining by gram stain
  2. catalase test
  3. grow on high concentration of NaCl (6.5%)
2 month
III) Phenotypic detection of virulence marker of Enterococci(Gelatinase activity)
Time Frame: 2 weeks
by culture on nutrient agar containing gelatin.Positive results appeared as liquefaction of gelatin
2 weeks
IV)Phenotypic detection of virulence marker of Enterococci (hemolytic activity)
Time Frame: 1 week
by Detection of hemolytic activity on the blood agar
1 week
V) Phenotypic detection of virulence marker of Enterococci(Caseinase production)
Time Frame: 2 weeks
by Detection of Caseinase production on Muller hinton agar containing skimmed milk 3%.
2 weeks
VI) Phenotypic detection of virulence marker of Enterococci(Formation of Slime layer)
Time Frame: 1 week
Formation of Slime layer by culture on Brain heart infusion agar containing 5% sucrose, plates are incubated for 24 hrs at 37oC. Positive strains gave mucoid and slimy colonies.
1 week
VII) Phenotypic detection of virulence marker of EnterococcI (Biofilm formation)
Time Frame: 2 weeks
using microtiter plate reader. Biofilm formation is scored as nonbiofilm forming (-), weak - (+), moderate - (++), and strong - (+++) corresponding to the A630 values ≤1, 1-≤2, 2-≤3, and>3, respectively
2 weeks
VIII) Antibiotic sensitivity test:
Time Frame: 3 monthe
  1. by 1- disc diffusion test using Vancomycin 30 μg, Teichoplanin 30 μg, Tetracycline 30 μg, Ampicillin 10 μg and Erythromycin 15 μg. Results ,Results are interpreted according to CLSI 2018.
  2. E-test:

MICs (minimal inhibitory concentrations) of Vancomycin are measured by E-test for confirmation of vancomycin resistance among the isolated Enterococci. Results are interpreted according to CLSI guidelines.
3 monthe
IX) Molecular Identification of commonest Enterococcus species
Time Frame: 1 month
by conventional gene specific uniplex PCR for E. faecalis and E. Faecium
1 month
X) Molecular detection of virulence genes
Time Frame: 2 months
Identification of virulence genes; gel E (gene for gelatinase), asa1 (gene for aggregation substance), cylA (gene for cytolysin activator), esp (gene for Enterococcal surface protein) Hyl (gene for Hyaluronidase) of E. faecalis and E. faecium was performed by uniplex PCR.The amplified products are visualized on 2% agarose gel stained with ethidium bromide. The stained gels are visualized and documented with a gel documentation system and analyzed visually to determine the size of PCR amplicons of the target genes directly by comparison with 100 bp DNA ladder marker.
2 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Sohag University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Ekram Ab Rahmand Mahmoud, lecturer, Sohag faculty of medicine

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 1, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 28, 2021

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 10, 2021

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 20, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 25, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 2, 2021

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 6, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 5, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2021

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Soh-Med-21-02-19

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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