Immune Cell Subgroups in Covid 19 Patients

January 11, 2021 updated by: Ufuk Oguz Idiz, Istanbul Training and Research Hospital

Evaluation of Immune Cell Subgroups in Covid 19 Patients

COVID-19, spreading rapidly all over the world, causes serious morbidity and mortality. In severe COVID-19 infections, after pulmonary inflammation, cardiovascular organ failure, cytokine storm, hemophagocytosis, septic shock, develops due to uncontrolled hypoxia, and isolated organ failure turns into multi-organ failure. It is noteworthy that it causes lymphopenia in patients. In studies conducted, the effects of Covid-19 on the immune system were evaluated with limited parameters. In addition, no study evaluating the effect of this disease on the immune system has been published in our country.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The causative agent of coronavirus 2019 (COVID-19) disease, which started in Wuhan province of China in December 2019, was severe acute respiratory failure syndrome coronavirus 2 (SARS-CoV-2), which quickly spread all over the world and caused a pandemic. COVID-19 can cause death with symptoms such as fever, cough, muscle pain, shortness of breath, and pneumonia (1). Pulmonary pathology of COVID-19 is diffuse alveolar damage, focal reactive hyperplasia of pneumocytes with patchy inflammatory cells, intravascular thrombosis, monocyte, macrophage and lymphocyte infiltration into pulmonary spaces. Severe infiltration of pulmonary tissue affects alveolar gas exchange. In addition, cardiovascular morbidity, tachyarrhythmia and thromboembolic events are observed in 1/5 of the hospitalized patients with troponin elevation, which is closely related to mortality. In severe COVID-19 infections, after pulmonary inflammation, cardiovascular organ failure, cytokine storm, hemophagocytosis, septic shock, develops due to uncontrolled hypoxia, and isolated organ failure turns into multi-organ failure.

It is noteworthy that it causes lymphopenia in patients. In the studies conducted, the effects of Covid-19 on the immune system and the determination of cell subgroups were performed with limited parameters. No studies have been conducted on PDL-1, one of the immune control points. In addition, no study evaluating the effect of this disease on the immune system with wide parameters has been published in our country.

We aimed to study CD3 (+) lymphocytes, CD4 (+) lymphocytes, CD 8 (+) lymphocytes, CD 3(-)/CD16 (+) NK cell ratio, CD14 (+) lymphocytes, and HLA-DR positivity on CD14 (+) cells at Covid-19 and healthy volunteers.

Study Type

Observational

Enrollment (Actual)

50

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

  • Turkey
      • Istanbul, Turkey, 34098
        • Istanbul Training and Reseach Hospital

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

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients who admitted to the emergency department with the complaint of respiratory failure, lymphopenia in blood tests and Covid 19 (+) in the PCR tests are case group.

Also healty volunteers who don't have complaint of respiratory failure, lymphopenia in blood tests and Covid 19 (-) in the PCR tests are control group.

Description

Inclusion Criteria:

  • Patients with Covid 19 PCR (+) results

Exclusion Criteria:

  • Cancer Patients
  • Patients with known immunodeficiency
  • Pregnancy

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

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Case Group
Covid 19 (+) patients
Diagnostic test: Flow cytometric analysis
Flow cytometric analysis of T helper, T cytotoxic cells, NK cells and monocytes
Control Group
Healthy volunteers
Diagnostic test: Flow cytometric analysis
Flow cytometric analysis of T helper, T cytotoxic cells, NK cells and monocytes

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
T cell subtype ratios
Time Frame: 1 month
T helper, NK cell and T cytotoxic cell ratio
1 month

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Monocyte ratio
Time Frame: 1 month
CD14 (+) monocyte and HLA-DR (+) cell ratio
1 month

Collaborators and Investigators

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

Sponsor

Istanbul Training and Research Hospital

Investigators

  • Principal Investigator: Ufuk Oguz Idiz, Assoc. Prof, Istanbul Training and Research Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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)

August 15, 2020

Primary Completion (Actual)

October 1, 2020

Study Completion (Actual)

October 1, 2020

Study Registration Dates

First Submitted

August 27, 2020

First Submitted That Met QC Criteria

August 27, 2020

First Posted (Actual)

August 28, 2020

Study Record Updates

Last Update Posted (Actual)

January 12, 2021

Last Update Submitted That Met QC Criteria

January 11, 2021

Last Verified

January 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Covid Cell

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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