Endothelial Function and Progenitor Cells in Acute Ischemic Stroke (EPCAS)

February 3, 2011 updated by: Charite University, Berlin, Germany
The purpose of this study is to determine whether levels of circulating endothelial progenitor cells (cEPC) are increased in the acute phase of ischemic stroke.

Study Overview

Status

Unknown

Conditions

Detailed Description

Endothelial dysfunction is a key component of atherosclerosis which contributes to the development of cardio- and cerebrovascular diseases. However, endothelial dysfunction (ED) is not established as a risk factor for ischemic stroke.

As a novelty the proposed trial investigates the following variety of indirect markers of endothelial function in acute ischemic stroke:

circulating endothelial progenitor cells (EPC), endothelial microparticles (EMP), ENDOPAT (RH- PAT ratio) in two regards:

  1. time after ischemic events (< 48h, Days 4-5, day 7 or at discharge)
  2. etiological stroke subtypes

It is not known whether these parameters are changed after acute cerebral ischemia and could possibly serve as specific target for treatment.

Study Type

Observational

Enrollment (Anticipated)

30

Contacts and Locations

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

Study Contact

Study Contact Backup

Study Locations

  • Germany
      • Berlin, Germany, 10117
        • Recruiting
        • Center for Stroke Research Berlin
        • Contact:
        • Principal Investigator:
          • Thomas Liman, MD

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 85 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients with first-ever ischemic stroke transferred to our stroke unit

Description

Inclusion Criteria:

  • Patients with first ever ischemic stroke
  • TIA, or transient symptoms with infarction (TSI)
  • Age > or = 18 years old within 24 hours after onset
  • Written informed consent to participate
  • No evidence for dysphagia

Exclusion Criteria:

  • Malignant hematopoietic disease (e.g. leukemia), severe systemic infections, severe immunological disease, renal or hepatic failure
  • Pancreatitis, cholecystolithiasis, intestinal malabsorption
  • Lactose intolerance
  • Increased risk of aspiration
  • Pregnancy
  • Life expectancy less than 12 months
  • Inability to give written informed consent
  • Psychosis
  • Alcohol dependency
  • Abuse of illegal drugs

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
first-ever ischemic stroke
first-ever ischemic stroke according to the WHO definition

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Levels of cEPC
Time Frame: <48h, day 4-5, discharge or day 7
Levels of cEPC (CD34+/CD133+/VEGF2R+/CD31) in % of mononuclear cells using flow cytometry with respect to stroke subtypes.
<48h, day 4-5, discharge or day 7

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Levels of EMP
Time Frame: <48h, day 4-5, day 7 or discharge
Levels of EMP (Annexin V+/CD31+; CD62E+) using flow cytometry with respect to stroke subtypes.
<48h, day 4-5, day 7 or discharge
ENDOPAT
Time Frame: <48h, day 4-5,day 7
Digital pulse volume change (with RH PAT as non invasive measurement (PAT-ratio; ENDOPAT, Itamar Medical Ltd.) for non-invasive, peripheral endothelial function
<48h, day 4-5,day 7

Collaborators and Investigators

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

Sponsor

Charite University, Berlin, Germany

Investigators

  • Principal Investigator: Matthias Endres, MD, Center for Stroke Research Berlin

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

July 1, 2010

Primary Completion (Anticipated)

December 1, 2011

Study Completion (Anticipated)

June 1, 2012

Study Registration Dates

First Submitted

February 3, 2011

First Submitted That Met QC Criteria

February 3, 2011

First Posted (Estimate)

February 4, 2011

Study Record Updates

Last Update Posted (Estimate)

February 4, 2011

Last Update Submitted That Met QC Criteria

February 3, 2011

Last Verified

January 1, 2011

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • FF_NCRC_EPC01
  • 2009-010356-97 (EudraCT Number)

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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