scholarly journals Aging impairs human bone marrow function and cardiac repair following myocardial infarction in a humanized chimeric mouse

Aging Cell ◽  
2021 ◽  
Author(s):  
Tina B. Marvasti ◽  
Faisal J. Alibhai ◽  
Lukasz Wlodarek ◽  
Anne Fu ◽  
Shu‐Hong Li ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Bone Marrow ◽  
Cardiac Repair ◽  
Human Bone ◽  
Human Bone Marrow ◽  
Chimeric Mouse ◽  
Bone Marrow Function

scholarly journals Clonally expanded novel multipotent stem cells from human bone marrow regenerate myocardium after myocardial infarction

2005 ◽  
Vol 115 (2) ◽  
pp. 326-338 ◽  
Author(s):  
Young-sup Yoon ◽  
Andrea Wecker ◽  
Lindsay Heyd ◽  
Jong-Seon Park ◽  
Tengiz Tkebuchava ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Stem Cells ◽  
Bone Marrow ◽  
Human Bone ◽  
Human Bone Marrow ◽  
Multipotent Stem Cells

Ex-Vivo Expanded Human Bone Marrow-Derived AC133+ Cells To Treat Myocardial Infarction.

Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 154-154
Author(s):  
Frida Grynspan ◽  
Moshe Marikovsky ◽  
Efrat Landau ◽  
Tony Peled ◽  
Arnon Nagler ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Bone Marrow ◽  
Wall Thickness ◽  
Ex Vivo ◽  
Anterior Wall ◽  
Left Ventricular ◽  
Human Bone ◽  
Human Bone Marrow ◽  
Cell Populations ◽  
Cell Injection

Abstract To examine whether ex-vivo expanded human bone marrow (BM)-derived AC133+ cells may participate in post myocardial infarction (MI) healing, we have examined the effect of the copper chelator tetraethylenepentamine (TEPA) on the ex-vivo expansion potential of BM-derived stem cell populations and the effect of the resulting ex-vivo expanded AC133+ cells in a MI animal model. AC133+ cells isolated from human BM, using the CliniMACS device, at purities greater than 90% were expanded in Teflon bags, in the presence of IL-6, TPO, Flt-3 ligand, and SCF with or without TEPA for three weeks. The progenitor cell composition and potential were examined at the end of the treatment time and after long-term incubation in culture. After 3 weeks in TEPA-treated cultures the total nuclear cell expanded more than 200±20 fold. The increase in the CD34+, AC133+ and AC133+/CD38-cell populations was 17±13, 16±1 and 270±110 - fold, respectively, and the CFU content was 84±28 fold higher than at the initiation of the cultures. Contrary to TEPA treated cultures, the cultures treated in the absence of the chelator lost their progenitor populations by week 5-7 in culture. Ex-vivo expanded AC133+ cells for 3 weeks expressed VEGF and VEGF receptor RNA as examined by RT-PCR. An MI model was established in athymic nude rats by permanent ligation of the left anterior descending coronary artery. Ex-vivo expanded AC133+ cells (6x106 cells/rat) or saline (control) were injected at the scar tissue 6 days post MI. Four weeks after cell therapy, the hearts were harvested and examined. Staining for smooth-muscle alpha-actin detected a 1.6-fold increase in capillary and arteriole density in the expanded cell-treated vs. control hearts. Preliminary echocardiographic studies compared 4 weeks post-treatment with those observed prior to treatment. Expanded BM-derived AC133+ injection into the infarcted myocardium improved left ventricular (LV) remodeling as demonstrated by increasing LV systolic dimensions only by 11%±4 while increasing by 53%±17 in control animals (p=0.02). Similarly, AC133+ cell injection improved LV contractility as demonstrated by increasing fractional shortening (FS) by 58%±44 whereas FS decreased by 20%± 5 in control animals (p=0.14). In addition, AC133+ cell injection prevented scar thinning as demonstrated by a decrease in anterior wall thickness of 10%±4 whereas the decrease in anterior wall thickness was 30%±7.5 in control saline-treated animals (p<0.05). Clinical trials examining the safety and feasibility of intra-corronary injection of ex-vivo expanded autologous BM-derived AC133+ to patients with ischemic heart disease, are currently in preparation. Conclusion: A. TEPA allows BM-derived AC133+ cells to self renew by permitting proliferation ex-vivo while hindering their differentiation. B. Our preliminary results suggest that injection of ex-vivo expanded BM-derived AC133+ cells into infarcted myocardium results in new vessel formation and improves left ventricular function.

scholarly journals Experimental and Clinical Regenerative Capability of Human Bone Marrow Cells After Myocardial Infarction

2004 ◽  
Vol 95 (7) ◽  
pp. 742-748 ◽  
Author(s):  
Francisco Fernández-Avilés ◽  
José Alberto San Román ◽  
Javier García-Frade ◽  
María Eugenia Fernández ◽  
María Jesús Peñarrubia ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Bone Marrow ◽  
Bone Marrow Cells ◽  
Human Bone ◽  
Human Bone Marrow ◽  
Marrow Cells

Protection by WR-2721 of human bone marrow function following irradiation

1986 ◽  
Vol 12 (8) ◽  
pp. 1505-1508 ◽  
Author(s):  
Louis S. Constine ◽  
Gunar Zagars ◽  
Philip Rubin ◽  
Morton Kligerman
Keyword(s):  
Bone Marrow ◽  
Human Bone ◽  
Human Bone Marrow ◽  
Bone Marrow Function

The human bone marrow (BM) niche in acute leukaemia

2017 ◽  
Author(s):  
D Pal ◽  
H Blair ◽  
S Boyd ◽  
P Bakelis ◽  
A Elder ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Acute Leukaemia ◽  
Human Bone ◽  
Human Bone Marrow ◽  
Bm Niche
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