Selective tissue site revascularization by combined focal injury and hematopoietic stem cell introduction

Abstract

The effects of angiogenesis created by tissue injury resulting from ischemic tissue being revascularized by transmyocardial revascularization are amplified by introducing cells containing an angiogenic agent into a patient positive to antigenic determinant such as Fik-1, Tie-2 or CD-34. Cells such as CD 34+ cells migrate to a site of angiogenesis and will thus efficiently carry the angiogenic agent to the site without requiring local introduction. Thus, a section of ischemic myocardium can be revascularized by performing TMR to create a number of sites of injury, and then introducing hematopoietic stem cells, for example CD 34+ cells, that contain a growth factor, genetic material or other angiogenic agent into the patient, most preferably by systemic introduction. As a result, the increase in vascularization will be greater than that exhibited by TMR alone or by the insertion of an angiogenic agent alone.

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