Intra-coronary Versus Intramyocardial Application of Enriched CD133pos Autologous Bone Marrow Derived Stem Cells (AlsterMACS)

Asklepios proresearch

Status

Terminated

Conditions

Heart Failure

Treatments

Other: autologous CD133pos stem cell application

Study type

Interventional

Funder types

Industry

Identifiers

NCT01337011

2009-013103-63 (EudraCT Number)

1884

Details and patient eligibility

About

This is a pilot study comparing the effect of intra-coronary versus intramyocardial application of enriched CD133pos autologous bone marrow derived stem cells for improving left ventricular function in chronic ischemic cardiomyopathy.

Full description

Recent years have seen a tremendous improvement of possibilities to restore normal cardiac perfusion of the coronary arteries both by surgical and interventional techniques. In addition, several pharmacological approaches are available to block the mal-adaptive molecular signaling initiated by the Renin/Angiotensin/Aldosteron (RAAS) system. Device therapy achieving resychronisation has lowered morbidity and mortality. However, heart failure therapy still falls short to address the underlying disease of the heart muscle: loss of contractile force.

To achieve this aim and restore contractile force a regenerative approach is required. Early experimental studies suggested bone marrow cells to be able to differentiate towards functional cardiomyocytes when injected into the scar area after ischemic injury.2 These and other studies lead to clinical trials, where bone marrow cells were injected into the coronary circulation. Lately, the first completed multi-center, placebo-controlled, double-blinded study found several end points to be improved including global left ventricular function 3. At the same time genetically labelled experimental mouse models demonstrated differentiation of bone marrow cells towards a cardiomyocyte lineage to be a rare event,4 questioning at least the proposed molecular and cellular mechanism of intra-coronary cell therapy. Furthermore, several other clinical trials recently performed did either find no or a very limited effect of intra-coronary applied bone marrow cells. The effect appears to be related to improved angiogenesis. Our group has recently shown that in mammals endogenous regeneration of myocardium does occur after injury and can be enhanced via specific signaling pathways.5 Whether intra-coronary cell therapy is the ideal approach to enhance this process is currently unclear.

References:

Nieminen MS, Brutsaert D, Dickstein K, Drexler H, Follath F, Harjola VP, Hochadel M, Komajda M, Lassus J, Lopez-Sendon JL, Ponikowski P, Tavazzi L. EuroHeart Failure Survey II (EHFS II): a survey on hospitalized acute heart failure patients: description of population. Eur Heart J. 2006;27:2725-2736.
Orlic D, Kajstura J, Chimenti S, Limana F, Jakoniuk I, Quaini F, Nadal-Ginard B, Bodine DM, Leri A, Anversa P. Mobilized bone marrow cells repair the infarcted heart, improving function and survival. Proc Natl Acad Sci U S A. 2001;98:10344-10349.
Schachinger V, Erbs S, Elsasser A, Haberbosch W, Hambrecht R, Holschermann H, Yu J, Corti R, Mathey DG, Hamm CW, Suselbeck T, Assmus B, Tonn T, Dimmeler S, Zeiher AM, the R-AMII. Intracoronary Bone Marrow-Derived Progenitor Cells in Acute Myocardial Infarction. N Engl J Med. 2006;355:1210-1221.
Murry CE, Soonpaa MH, Reinecke H, Nakajima H, Nakajima HO, Rubart M, Pasumarthi KB, Virag JI, Bartelmez SH, Poppa V, Bradford G, Dowell JD, Williams DA, Field LJ. Haematopoietic stem cells do not transdifferentiate into cardiac myocytes in myocardial infarcts. Nature. 2004;428:664-668.
Zelarayan L, Noack C, Sekkali B, Kmecova J, Gehrke C, Renger A, Zafiriou MP, Nagel Rvd, Dietz R, Windt LJd, Balligand J-L, Bergmann MW. beta-catenin downregulation attenuates ischemic cardiac remodeling through enhanced resident precursor cell differentiation. Proc Natl Acad Sci U S A. 2008;105:19762-19767.
Krause KT, Jaquet K, Geidel S, Schneider C, Mandel C, Stoll HP, Hertting K, Harle T, Kuck KH. Percutaneous endocardial injection of erythropoietin: assessment of cardioprotection by electromechanical mapping. Eur J Heart Fail. 2006;8:443-450.

Enrollment

10 patients

Sex

All

Ages

18 to 80 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Patients 18 to 80 years old
Of female and male gender
Patient has reduced ejection fraction as evaluated by routine clinical angiogram, echocardiography or MRI (≤45%) due to ischemic heart disease
symptomatic heart failure NYHA ≥ II on optimal therapy
coronary artery in the target region that can be used for cell infusion
Patient has been informed of the nature of the clinical trial and agrees to its provision and has provided written informed consent

Exclusion criteria

planned or performed CABG surgery or PCI within 4 weeks of study entry
recent myocardial infarction (< 6 months)
TIMI flow < II in the coronary artery selected for infusion
cardiogenic shock requiring mechanical ventilation or intra-aortic balloon pump
progressive tumor disease
primary disease of bone marrow including mal-function of components of the coagulation system
women of child-bearing age premenopausal
LV wall thickness < 5mm at planned site of injection
ventricular wall thrombus
severe aortic valvular heart disease
severe atrial or ventricular tachycardia unresponsive to intravenous or oral drug therapy
aneurysm of the anterior wall
history of stroke
know diseases of the liver resulting in reduced plasmatic coagulation with spontaneous INR >2
patients with chronic infectious diseases (HBV, HCV, HIV, seropositivity for Treponema pallidum)
patients taking part or have taken part in other clinical trials within the past 3 months
patients unable to provide informed consent
any other medical condition that the enrolling physician deems significant in representing a potential hazard for the patient when participating in this study