scholarly journals Paradoxical impairment of angiogenesis, endothelial function and circulating number of endothelial progenitor cells in DPP4-deficient rat after critical limb ischemia

2013 ◽  
Vol 4 (2) ◽  
pp. 31 ◽  
Author(s):  
Cheuk-Kwan Sun ◽  
Steve Leu ◽  
Jiunn-Jye Sheu ◽  
Tzu-Hsien Tsai ◽  
Hsin-Chin Sung ◽  
...  
Keyword(s):  
Endothelial Function ◽  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Critical Limb Ischemia ◽  
Limb Ischemia ◽  
Endothelial Progenitor

Inflammation is associated with a reduced number of pro-angiogenic Tie-2 monocytes and endothelial progenitor cells in patients with critical limb ischemia

Angiogenesis ◽  
2015 ◽  
Vol 19 (1) ◽  
pp. 67-78 ◽  
Author(s):  
Jörn F. Dopheide ◽  
Philipp Geissler ◽  
Jennifer Rubrech ◽  
Amelie Trumpp ◽  
Geraldine C. Zeller ◽  
...  
Keyword(s):  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Critical Limb Ischemia ◽  
Limb Ischemia ◽  
Endothelial Progenitor

Peripheral endothelial progenitor cells (CD133+) for therapeutic vasculogenesis in a patient with critical limb ischemia. One year follow-up

Cytotherapy ◽  
2007 ◽  
Vol 9 (1) ◽  
pp. 99-102 ◽  
Author(s):  
M.C. Cañizo ◽  
F. Lozano ◽  
J.R. González-Porras ◽  
M. Barros ◽  
N. López-Holgado ◽  
...  
Keyword(s):  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Critical Limb Ischemia ◽  
Limb Ischemia ◽  
Endothelial Progenitor ◽  
One Year

Early endothelial progenitor cells in bone marrow are a biomarker of cell therapy success in patients with critical limb ischemia

Cytotherapy ◽  
2012 ◽  
Vol 14 (2) ◽  
pp. 232-239 ◽  
Author(s):  
David M. Smadja ◽  
Jean-Paul Duong-van-Huyen ◽  
Liliane Dal Cortivo ◽  
Anne Blanchard ◽  
Patrick Bruneval ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Cell Therapy ◽  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Critical Limb Ischemia ◽  
Limb Ischemia ◽  
Endothelial Progenitor ◽  
Therapy Success

Abstract 019: Diabetic Endothelial Progenitor Cells in Combination with an RGDS Presenting Peptide Amphiphile Enhance Recovery from Critical Limb Ischemia in Diabetic Mice

2013 ◽  
Vol 113 (suppl_1) ◽  
Author(s):  
Erin E Vaughan ◽  
Eduard Sleep ◽  
Sol Misener ◽  
Aiko Ito Klinger ◽  
Veronica Ramirez ◽  
...  
Keyword(s):  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Critical Limb Ischemia ◽  
Limb Ischemia ◽  
Laser Doppler ◽  
Diabetic Mice ◽  
Endothelial Progenitor ◽  
Peptide Amphiphile ◽  
Post Surgery ◽  
The Impact

Approximately two million people suffer from critical limb ischemia (CLI) with the prevalence of the disease expected to rise. Thus, there is a crucial need to develop new therapies to enhance angiogenesis and minimize the impact of the blocked vessel(s). Cell therapy using endothelial progenitor cells (EPCs) has shown some promise, however, the cells may not remain at the site of injury long enough to significantly impact the course of the disease. Further, the use of autologous cells may be problematic as the underlying disease, such as diabetes, which resulted in CLI also appears to negatively impact the function of EPCs. Thus, we propose to use a biomaterial in combination with the EPCs to enhance both the retention of cells at the site of injury and also enhance the function of the cells. A self-assembling peptide amphiphile (PA) was developed with an attached functional group consisting of the cell-attachment sequence of peptides identified in fibronectin: RGDS. We hypothesize that EPCs combined with RGDS PA will improve the angiogenic response in CLI. Indeed, in vitro we found that EPCs from diabetic mice (db/db) exhibited increased survival on an RGDS PA in comparison to a scrambled sequence (DGRS) PA as measured by calcein-AM and ethidium homodimer-1 staining. To test if this enhanced survival would improve critical limb ischemia in diabetic mice, uni-lateral ischemia was induced by ligation of the femoral artery. Three days post surgery ischemia was confirmed by laser Doppler and the following treatments were injected into the ischemic limb of the diabetic mice: (1) PBS (2) scrambled PA (3) RGDS (4) scrambled PA +100,000 diabetic EPCs (5) RGDS PA + 100,000 diabetic EPCs. At four weeks post-injection, blood flow (as measured by laser Doppler) was increased in the group receiving RGDS PA when compared to the other groups (n>6). Further, necrosis was decreased in the RGDS PA group and muscle regeneration, as measured by the number of central nuclei, was increased in the RGDS PA group. Taken together, these results suggest that RGDS PA in combination with db/db EPCs enhances recovery from CLI in diabetic mice.

scholarly journals The Impact of Maternal Fructose Exposure on Angiogenic Activity of Endothelial Progenitor Cells and Blood Flow Recovery After Critical Limb Ischemia in Rat Offspring

2019 ◽  
Vol 20 (10) ◽  
pp. 2429 ◽  
Author(s):  
Steve Leu ◽  
Kay L. H. Wu ◽  
Wei-Chia Lee ◽  
You-Lin Tain ◽  
Julie Y. H. Chan
Keyword(s):  
Blood Flow ◽  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Critical Limb Ischemia ◽  
Limb Ischemia ◽  
Cellular Migration ◽  
Endothelial Progenitor ◽  
Western Blots ◽  
Angiogenic Activity ◽  
The Impact

Adult metabolic syndrome is considered to be elicited by the developmental programming which is regulated by the prenatal environment. The maternal excess intake of fructose, a wildly used food additive, is found to be associated with developmental programing-associated cardiovascular diseases. To investigate the effect of maternal fructose exposure (MFE) on endothelial function and repair, which participate in the initiation and progress of cardiovascular disease, we applied a rat model with maternal fructose excess intake during gestational and lactational stage and examined the number and function of endothelial progenitor cells (EPCs) in 3-month-old male offspring with induction of critical limb ischemia (CLI). Results showed that the circulating levels of c-Kit+/CD31+ and Sca-1+/KDR+ EPC were reduced by MFE. In vitro angiogenesis analysis indicated the angiogenic activity of bone marrow-derived EPC, including tube formation and cellular migration, was reduced by MFE. Western blots further indicated the phosphorylated levels of ERK1/2, p38-MAPK, and JNK in circulating peripheral blood mononuclear cells were up-regulated by MFE. Fourteen days after CLI, the reduced blood flow recovery, lowered capillary density, and increased fibrotic area in quadriceps were observed in offspring with MFE. Moreover, the aortic endothelium-mediated vasorelaxant response in offspring was impaired by MFE. In conclusion, maternal fructose intake during gestational and lactational stage modulates the number and angiogenic activity of EPCs and results in poor blood flow recovery after ischemic injury.

The prostacyclin analogue iloprost increases circulating endothelial progenitor cells in patients with critical limb ischemia

2008 ◽  
Vol 100 (05) ◽  
pp. 871-877 ◽  
Author(s):  
Rossella Di Stefano ◽  
Maria Barsotti ◽  
Elio Melillo ◽  
Mariacarla Iorio ◽  
Tatiana Santoni ◽  
...  
Keyword(s):  
Progenitor Cells ◽  
Endothelial Progenitor Cells ◽  
Critical Limb Ischemia ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Density Lipoprotein ◽  
Limb Ischemia ◽  
Disease Stage ◽  
Endothelial Progenitor

SummaryPatients with critical limb ischemia (CLI) have low levels of endothelial progenitor cells (EPC). Iloprost has been demonstrated to stimulate vascular endothelial growth factor (VEGF) and promote angiogenesis. We investigated the effects of iloprost on EPC levels in vivo in CLI patients. Twenty-three patients with stage III and IV CLI were treated with iloprost for four weeks, improving clinical and instrumental parameters. Mononuclear cells isolated from peripheral blood were cultured to obtain “early” EPC, evaluated counting adherent cells with double positivity for acetylated low-density lipoprotein uptake and Ulex Europaeus lectin at flow cytometry. These cells also co-expressed the monocyte markers CD14 and CD45.Iloprost increased EPC number in the whole patient population: pre-treatment median: 13,812/ml; range: 1,263–83,648/ml; post-treatment median: 23,739/ml; range: 3,385–99,251/ml; p=0.035, irrespective of age, sex, disease stage or atherosclerosis risk factors. In conclusion, iloprost increases EPC number in peripheral blood in vivo. Such an effect may have therapeutic relevance.

Sign in / Sign up

Export Citation Format

Share Document