Selectin blockade decreases postischemic recruitment of bone marrow stromal cells
The authors have no funding, financial relationships, or conflicts of interest to disclose.
Presented at the Triological Society Annual Meeting, Orlando, Florida, U.S.A., April 13, 2013.
Abstract
Objectives/Hypothesis
Investigate the localization mechanisms of bone marrow stromal cells following transient ischemia-reperfusion injury in a murine flap model.
Study Design
Controlled laboratory study.
Methods
A cutaneous flap based on the inferior epigastric artery was elevated, and transient ischemia of 3.5 hours using a microvascular clamp was achieved. Fucoidan was injected intravenously 24 hours before the ischemic period. Following the period of ischemia, radiolabeled bone marrow stromal cells were injected intravenously, and radioactivity was determined postoperatively.
Results
Attenuation of the uptake of bone marrow stromal cells into postischemic tissue was observed in those mice treated with fucoidan as indicated by gamma counts measured in the flaps when compared with controls (P < . 001).
Conclusions
Decreased uptake of radiolabeled bone marrow stromal cells into postischemic tissues pretreated with fucoidan indicates selectin-mediated bone-marrow stromal cell recruitment in a murine cutaneous flap model.
Level of Evidence
N/A. Laryngoscope, 123:2993–2995, 2013