PMID- 21167340 OWN - NLM STAT- MEDLINE DCOM- 20110223 LR - 20170203 IS - 1097-6744 (Electronic) IS - 0002-8703 (Linking) VI - 161 IP - 1 DP - 2011 Jan TI - CD34(+) cell infusion after ST elevation myocardial infarction is associated with improved perfusion and is dose dependent. PG - 98-105 LID - 10.1016/j.ahj.2010.09.025 [doi] AB - BACKGROUND: the objective of the study was to determine whether the effects of infarct-related artery (IRA) infusion of autologous bone marrow-derived CD34(+) cells after ST elevation myocardial infarction (STEMI) are dependent on the dose (quantity and mobility) of the cells infused. Beneficial effects of IRA infusion of mononuclear cells after STEMI have been inconsistent, possibly because of differences in timing, cell type, quantity, and mobility of infused cells. METHODS: patients were randomized to bone marrow harvest (n = 16) or control (n = 15). At a median of 8.3 days after coronary stenting for STEMI, CD34(+) cells were infused via the IRA at 3 dose levels (5, 10, and 15 x 10(6)) in cohorts of 5 patients each. Baseline and follow-up imaging and ex vivo CD34(+) cell mobility were performed. RESULTS: Cell harvest and infusion were safe. Quantitative rest hypoperfusion score measured by single-photon emission computed tomography improved at 6 months in the >/= 10 million cohorts compared with controls (-256 vs +14, P = .02). There was a trend toward improved ejection fraction at 6 months (+4.5%) in the >/= 10 million cohorts compared with no change in the controls and 5 million cohort (+0.7%). Improved perfusion and infarct size reduction correlated with the quantity and mobility of the infused CD34(+) cells. CONCLUSIONS: the effects of CD34(+) cell IRA infusion during the repair phase after STEMI are dose dependent and, at a threshold dose of 10 million CD34(+) cells, associated with a significant improvement in perfusion that may limit deterioration in cardiac function (IRA infusion of CD34(+) cells in patients with acute myocardial infarction [AMR-01] NCT00313339). FAU - Quyyumi, Arshed A AU - Quyyumi AA AD - Emory University, Atlanta, GA, USA. aquyyum@emary.edu FAU - Waller, Edmund K AU - Waller EK FAU - Murrow, Jonathan AU - Murrow J FAU - Esteves, Fabio AU - Esteves F FAU - Galt, James AU - Galt J FAU - Oshinski, John AU - Oshinski J FAU - Lerakis, Stamatios AU - Lerakis S FAU - Sher, Salman AU - Sher S FAU - Vaughan, Douglas AU - Vaughan D FAU - Perin, Emerson AU - Perin E FAU - Willerson, James AU - Willerson J FAU - Kereiakes, Dean AU - Kereiakes D FAU - Gersh, Bernard J AU - Gersh BJ FAU - Gregory, Douglas AU - Gregory D FAU - Werner, Astrid AU - Werner A FAU - Moss, Thomas AU - Moss T FAU - Chan, Wai Shun AU - Chan WS FAU - Preti, Robert AU - Preti R FAU - Pecora, Andrew L AU - Pecora AL LA - eng SI - ClinicalTrials.gov/NCT00313339 PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial PL - United States TA - Am Heart J JT - American heart journal JID - 0370465 RN - 0 (Antigens, CD34) SB - IM MH - *Antigens, CD34 MH - Bone Marrow Cells/*immunology MH - Bone Marrow Transplantation/*methods MH - Coronary Circulation/*physiology MH - Coronary Vessels MH - *Electrocardiography MH - Female MH - Follow-Up Studies MH - Humans MH - Infusions, Intra-Arterial MH - Magnetic Resonance Imaging MH - Male MH - Middle Aged MH - Myocardial Infarction/diagnosis/physiopathology/*therapy MH - Tomography, Emission-Computed, Single-Photon MH - Treatment Outcome EDAT- 2010/12/21 06:00 MHDA- 2011/02/24 06:00 CRDT- 2010/12/21 06:00 PHST- 2010/04/07 00:00 [received] PHST- 2010/09/29 00:00 [accepted] PHST- 2010/12/21 06:00 [entrez] PHST- 2010/12/21 06:00 [pubmed] PHST- 2011/02/24 06:00 [medline] AID - S0002-8703(10)00894-X [pii] AID - 10.1016/j.ahj.2010.09.025 [doi] PST - ppublish SO - Am Heart J. 2011 Jan;161(1):98-105. doi: 10.1016/j.ahj.2010.09.025.