Stem Cell Mobilization by G-CSF Post Myocardial Infarction to Promote Myocyte Repair
Status:
Unknown status
Trial end date:
2006-10-01
Target enrollment:
Participant gender:
Summary
Eighty-six patients with heart attacks will be identified at our hospital. Post heart attack
we will assess heart function, blood flow to the heart, and heart cell function. We will
assess these parameters using nuclear cardiology scans that are used in everyday cardiology
practice. The patients will then be divided into 2 groups. One group will receive a
medication called G-CSF and the other group will receive a placebo. We will give this drug
(1-2ml) for 4 days beneath the skin. We will take the patients blood during this time and
measure how the drug affected their blood. The patients will all have the nuclear cardiology
tests again in 6 weeks and 6 months to see how their heart is functioning. As well, they will
have a six month angiogram. All the patients will otherwise receive optimal care from their
Cardiologist. They will be seen at 6, 12, 24, and 52 weeks to assess them clinically.
This study will test the effects of G-CSF on the heart function of patients who have had a
heart attack. It is a medication that that has been shown in an animal model to improve heart
function after a heart attack. It is a medication that has been used for many years to treat
patients with cancers and to increase the number of cells donated by healthy bone marrow
donors. It has no serious side effects. It works by increasing the number of a person's own
stem cells in the blood. Stem cells are special cells that are present in our bodies that
have the ability to form new cells. It had been thought that the heart could not make new
cells after it has been damaged. Other investigators have shown that this might not be the
case. It is now thought that after an injury, stem cells from the bone marrow can transform
into cells of the injured tissue. Therefore, we are trying to increase the number of stem
cells in the circulation with G-CSF so as to increase repair in the heart after it has been
damaged. This strategy has never been tried in human beings and if successful could greatly
reduce death and suffering from heart disease.