The Mechanism of Extracellular Vesicles Containing Mitochondrial DNA in ARDS Lung Injury Caused by Extrapulmonary Sepsis

September 18, 2021 updated by: Chun Pan, Southeast University, China
The acute respiratory distress syndrome (ARDS) remains a common and morbid complication of critical illness. Sepsis contribute to a lot of ARDS cases, but mechanisms by which non-pulmonary insults such as extrapulmonary sepsis propagate lung injury remain unclear. Most eukaryotic cells release small anuclear membrane-bound vesicles into the extracellular environment in either physiological or pathophysiological conditions, often called extracellular vesicles (EVs) .Through their cargo containing bioactive molecules such as proteins, mRNAs, and microRNAs and their interaction with target cells, EVs are recognized as important mediators of cellular communication. Mitochondrial contents are clearly present in EVs, and mitochondrial cargo within EVs have been shown to stimulate the production of proinflammatory cytokines, further enhancing LPS-induced inflammation. Among the mitochondrial contents, mtDNA was present at higher levels in EVs.Therefore, we hypothesis, EVs containing mtDNA play an important role in the occurrence and development of ARDS caused by extrapulmonary sepsis.

Study Overview

Status

Not yet recruiting

Conditions

Detailed Description

Inclusion criteria: Patients with ARDS caused by abdominal infection Exclusion criteria: age <18 years old or pregnancy; death or discharge within 24 hours after admission; advanced tumor The pathological information of the patients was collected on 24h, 48h after admission including demographic data, Acute Physiology and Chronic Health Evaluation (APACHE) II score , number of organ failures included in the Sequential Organ Failure Assessment (SOFA) score. The levels of lactate and inflammatory mediators (i.e., plasma C-reactive protein and procalcitonin) were detected on 24h and 48h after admission. All patients were followed up for 28 days, and all-cause mortality was recorded. The durations of mechanical ventilation and ICU stay were also recorded. The primary outcome was mortality on Day 28. Secondary outcomes included the ventilator days and ICU length of stay.

Peripheral blood samples (2 mL) were collected on 24h and 48h after admission to the ICU. EVs were isolated from the plasma, and mtDNA concentration of plasma DNA was evaluated by RT-qPCR.

Study Type

Observational

Enrollment (Anticipated)

50

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 and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

We enrolled patients with ARDS caused by abdominal infection

Description

Inclusion Criteria:

Patients with ARDS caused by abdominal infection

Exclusion Criteria:

age <18 years old or pregnancy; death or discharge within 24 hours after admission; advanced tumor

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

Outcome Measure
Time Frame
28-day mortality
Time Frame: All patients were followed up for 28 days
All patients were followed up for 28 days

Secondary Outcome Measures

Outcome Measure
Time Frame
Ventilator days
Time Frame: All patients were followed up for 28 days
All patients were followed up for 28 days
ICU stay
Time Frame: All patients were followed up for 28 days
All patients were followed up for 28 days

Collaborators and Investigators

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

Sponsor

Southeast University, China

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 (Anticipated)

October 1, 2021

Primary Completion (Anticipated)

September 1, 2022

Study Completion (Anticipated)

December 31, 2022

Study Registration Dates

First Submitted

September 18, 2021

First Submitted That Met QC Criteria

September 18, 2021

First Posted (Actual)

September 29, 2021

Study Record Updates

Last Update Posted (Actual)

September 29, 2021

Last Update Submitted That Met QC Criteria

September 18, 2021

Last Verified

September 1, 2021

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ARDS-mtDNA EVs

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.

Clinical Trials on ARDS, Human

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Norway

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe