Volume 18, Issue 1 pp. 23-28

Do leukocytes contribute to impaired microvascular tissue perfusion after arterial repair?

Frank-W. Peter M.D.

Frank-W. Peter M.D.

Division of Plastic and Reconstructive Surgery, University of Louisville School of Medicine, Louisville, KY

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Dale A. Schuschke Ph.D.

Dale A. Schuschke Ph.D.

Center for Applied Microcirculation Research, University of Louisville School of Medicine, Louisville, KY

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Wei Z. Wang M.D.

Wei Z. Wang M.D.

Center for Applied Microcirculation Research, University of Louisville School of Medicine, Louisville, KY

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Gary L. Anderson Ph.D.

Gary L. Anderson Ph.D.

Department of Physiology, University of Louisville School of Medicine, Louisville, KY

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Ralph J.P.M. Franken M.D.

Ralph J.P.M. Franken M.D.

Division of Plastic and Reconstructive Surgery, University of Louisville School of Medicine, Louisville, KY

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Silvia Pierangeli Ph.D.

Silvia Pierangeli Ph.D.

Departments of Medicine, University of Louisville School of Medicine, Louisville, KY

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John H. Barker M.D., Ph.D.

Corresponding Author

John H. Barker M.D., Ph.D.

Division of Plastic and Reconstructive Surgery, University of Louisville School of Medicine, Louisville, KY

332 MDR Building, 511 South Floyd Street, Louisville, KY 40292Search for more papers by this author

Abstract

Impaired capillary perfusion may result in flap failure. Platelet emboli, polymorphonuclear leukocytes (PMNs), and/or vasospasm have been identified as possible causes. This study investigates the role of PMNs in causing impaired capillary perfusion in a free flap model. PMN concentrations were depleted using antineutrophil serum. The cremaster muscles of 20 Sprague-Dawley rats were isolated on a single neurovascular pedicle and after a simulated technically poor arterial anastomosis upstream and reperfusion, capillary perfusion was measured each hour for 6 hours. Even though the number of PMNs was significantly reduced in the animals treated with antineutrophil serum, capillary perfusion was not changed compared with controls. These results demonstrate that depleting circulating PMNs does not protect capillary perfusion in our model. These findings suggest that reduced capillary perfusion downstream from an anastomotic repair is not mediated by the presence of PMNs in the microcirculation. © 1998 Wiley-Liss, Inc. MICROSURGERY 18:23–28, 1998.

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