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Autologous stem cell for peripheral arterial disease

Background

Peripheral arterial disease (PAD) is a common cause of disability and mortality. Up to one third of patients are not susceptible to traditional revascularization and may benefit from stem cell therapies.

Objective

In this meta-analysis, we sought to determine whether autologous cell is effective in the results of PAD.

Methods

We searched the English literature in Medline, Excerpta Medica and the Cochrane database for trials of autologous cell in patients with PAD published before 31 January 2009. We included controlled and non-controlled, randomized and non-randomized trials using autologous bone marrow or granulocyte colony stimulating factor (G-CSF) mobilized peripheral blood cells to treat PAD. We also collected data from trials of G-CSF mono , as a control results.

Results

In a meta-analysis of 37 trials, autologous cell was effective in improving surrogate indexes of ischemia, subjective symptoms and hard endpoints (ulcer healing and amputation). On the contrary, G-CSF mono was not associated with significant improvement in the same endpoints. Patients with thromboangiitis obliterans showed some larger benefits than patients with atherosclerotic PAD. The intramuscular route of administration and the use of bone marrow cells seemed somehow more effective than intrarterial administration and the use of mobilized peripheral blood cells. The procedures were well tolerated and generally safe.

Conclusion

This meta-analysis indicates that intramuscular autologous bone marrow cell is a feasible, relatively safe and potentially effective therapeutic strategy for PAD patients, who are not candidate for traditional revascularization. Larger, placebo-controlled, randomized multicenter trials need to be planned and conducted to confirm these findings.

URL: http://www.atherosclerosis-journal.com/article/S0021-9150%2809%2900697-2/abstract?cc=y=?cc=y=