Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

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

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified January 2011 by Charite University, Berlin, Germany.
Recruitment status was:  Recruiting
Information provided by:
Charite University, Berlin, Germany Identifier:
First received: February 3, 2011
Last updated: NA
Last verified: January 2011
History: No changes posted
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.

Ischemic Stroke

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Endothelial Function and Progenitor Cells in Acute Ischemic Stroke

Further study details as provided by Charite University, Berlin, Germany:

Primary Outcome Measures:
  • 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.

Secondary Outcome Measures:
  • 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.

  • 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

Biospecimen Retention:   Samples Without DNA
whole blood, serum, PBMC, plasma

Estimated Enrollment: 30
Study Start Date: July 2010
Estimated Study Completion Date: June 2012
Estimated Primary Completion Date: December 2011 (Final data collection date for primary outcome measure)
first-ever ischemic stroke
first-ever ischemic stroke according to the WHO definition

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.


Ages Eligible for Study:   18 Years to 85 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients with first-ever ischemic stroke transferred to our stroke unit

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
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01289795

Contact: Thomas Liman, MD 004930450560643
Contact: Matthias Endres, MD 004930450560102

Center for Stroke Research Berlin Recruiting
Berlin, Germany, 10117
Contact: Thomas Liman, MD    004930450560643   
Principal Investigator: Thomas Liman, MD         
Sponsors and Collaborators
Charite University, Berlin, Germany
Principal Investigator: Matthias Endres, MD Center for Stroke Research Berlin
  More Information

Responsible Party: Matthias Endres, MD, Center for Stroke Research Berlin Identifier: NCT01289795     History of Changes
Other Study ID Numbers: FF_NCRC_EPC01
2009-010356-97 ( EudraCT Number )
Study First Received: February 3, 2011
Last Updated: February 3, 2011

Keywords provided by Charite University, Berlin, Germany:
Cerebral Infarction
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases

Additional relevant MeSH terms:
Cerebral Infarction
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases
Pathologic Processes
Brain Infarction
Brain Ischemia processed this record on May 25, 2017