BACKGROUND: Several reports showed an increase of CD34(+) stem/progenitor cell count early after an acute myocardial infarction (AMI), suggesting a contribution of bone marrow cells in myocardial regeneration after the acute event. Nevertheless, at present plasma mediators of CD34(+) cell mobilization from bone marrow to peripheral blood in patients with AMI are poorly understood. Aim of our study was to establish the impact of different well-known mobilizing cytokines on spontaneous stem cell mobilization in patients with different ischemic heart syndromes, such as the AMI and the chronic stable angina (CSA), compared to healthy controls. METHODS: In 16 patients with AMI, 18 with CSA and 22 healthy blood donors the concentration of CD34(+) cells, and mobilizing cyokines (G-CSF, SCF, VEGF, SDF1-alpha) were assessed. RESULTS: The peak number of circulating CD34(+) cells in AMI patients (8.58+/-2.08 cells/microl) was higher than that observed in patients with CSA (3.41+/-0.56 cells/microl, p=0.0061) or in healthy controls (2.18+/-0.35 cells/microl, p<0.001). However endogenous G-CSF was significantly higher in the serum of patients with AMI compared to CSA patients and to controls and in CSA patients compared to controls. Interestingly, as regards VEGF, while this cytokine was increased in AMI with respect to control and CSA group, the latter showed a significantly lower concentration with respect to controls. Finally SDF-1 alpha was higher in AMI patients with respect to controls. CD34(+) cells were significantly correlated to G-CSF (directly) and to SCF (inversely) in patients with AMI. CONCLUSION: In the present study, we have demonstrated for the first time that the spontaneous mobilization of CD34(+) cells into the peripheral blood of patients with AMI is significantly correlated to endogenous G-CSF. Considering recent data suggesting a potential favourable effect of circulating CD34(+) cells on left ventricular function, the present evidence of a correlation between endogenous G-CSF and CD34(+) cell levels supports the pharmacological administration of G-CSF as a non-invasive option for regeneration of myocardial tissue after AMI.
BACKGROUND: Several reports showed an increase of CD34(+) stem/progenitor cell count early after an acute myocardial infarction (AMI), suggesting a contribution of bone marrow cells in myocardial regeneration after the acute event. Nevertheless, at present plasma mediators of CD34(+) cell mobilization from bone marrow to peripheral blood in patients with AMI are poorly understood. Aim of our study was to establish the impact of different well-known mobilizing cytokines on spontaneous stem cell mobilization in patients with different ischemic heart syndromes, such as the AMI and the chronic stable angina (CSA), compared to healthy controls. METHODS: In 16 patients with AMI, 18 with CSA and 22 healthy blood donors the concentration of CD34(+) cells, and mobilizing cyokines (G-CSF, SCF, VEGF, SDF1-alpha) were assessed. RESULTS: The peak number of circulating CD34(+) cells in AMI patients (8.58+/-2.08 cells/microl) was higher than that observed in patients with CSA (3.41+/-0.56 cells/microl, p=0.0061) or in healthy controls (2.18+/-0.35 cells/microl, p<0.001). However endogenous G-CSF was significantly higher in the serum of patients with AMI compared to CSA patients and to controls and in CSA patients compared to controls. Interestingly, as regards VEGF, while this cytokine was increased in AMI with respect to control and CSA group, the latter showed a significantly lower concentration with respect to controls. Finally SDF-1 alpha was higher in AMI patients with respect to controls. CD34(+) cells were significantly correlated to G-CSF (directly) and to SCF (inversely) in patients with AMI. CONCLUSION: In the present study, we have demonstrated for the first time that the spontaneous mobilization of CD34(+) cells into the peripheral blood of patients with AMI is significantly correlated to endogenous G-CSF. Considering recent data suggesting a potential favourable effect of circulating CD34(+) cells on left ventricular function, the present evidence of a correlation between endogenous G-CSF and CD34(+) cell levels supports the pharmacological administration of G-CSF as a non-invasive option for regeneration of myocardial tissue after AMI.
Authors: Ibhar Al Mheid; Salim S Hayek; Yi-An Ko; Faysal Akbik; Qunna Li; Nima Ghasemzadeh; Greg S Martin; Qi Long; Muhammad Hammadah; A Maziar Zafari; Viola Vaccarino; Edmund K Waller; Arshed A Quyyumi Journal: Circ Res Date: 2016-07-19 Impact factor: 17.367
Authors: Martin Rubach; Roland Adelmann; Moritz Haustein; Florian Drey; Kurt Pfannkuche; Bing Xiao; Annette Koester; Floris E A Udink ten Cate; Yeong-Hoon Choi; Klaus Neef; Azra Fatima; Tobias Hannes; Frank Pillekamp; Juergen Hescheler; Tomo Šarić; Konrad Brockmeier; Markus Khalil Journal: Stem Cells Dev Date: 2014-01-15 Impact factor: 3.272
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Authors: Ayman Samman Tahhan; Muhammad Hammadah; Mohamad Raad; Zakaria Almuwaqqat; Ayman Alkhoder; Pratik B Sandesara; Heval Mohamed-Kelli; Salim S Hayek; Jeong Hwan Kim; Wesley T O'Neal; Matthew L Topel; Aubrey J Grant; Nabil Sabbak; Robert E Heinl; Mohamad Mazen Gafeer; Malik Obideen; Belal Kaseer; Nasser Abdelhadi; Yi-An Ko; Chang Liu; Iraj Hesaroieh; Ernestine A Mahar; Viola Vaccarino; Edmund K Waller; Arshed A Quyyumi Journal: Circ Res Date: 2018-03-07 Impact factor: 17.367