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  • Title: Comparative analysis of immunological reconstitution induced by vascularized bone marrow versus bone marrow cell transplantation.
    Author: Lukomska B, Durlik M, Cybulska E, Olszewski WL.
    Journal: Transpl Int; 1996; 9 Suppl 1():S492-6. PubMed ID: 8959893.
    Abstract:
    We have reported previously that vascularized bone marrow transplantation (VBMT) in an orthotopic hind limb graft brings about complete repopulation of bone marrow cavities in lethally irradiated syngeneic recipients within 10 days. Intravenous infusion of an equivalent volume of bone marrow cell suspension was evidently less effective. The purpose of this study was to investigate the reconstitution of immunocompetent compartments of lethally irradiated syngeneic rats after VBMT. Lewis rat hind limbs were transplanted orthotopically into irradiated recipients. Ten days after irradiation and bone marrow transplantation, bone marrow, mesenteric lymph nodes, and sera from rats were harvested. Mesenteric lymph node lymphocytes were analyzed. The responsiveness for mesenteric lymph node lymphocytes (MLNL) to mitogens and cell proliferation in the presence of sera and bone marrow cell (BMC) culture supernatants were measured. Our studies have shown that vascularized bone marrow transplantation brings about rapid replenishment of lymphoid organs of lethally irradiated syngeneic recipients. The repopulating subsets are fully responsive to mitogens. Sera from reconstituting rats had no effect on the proliferation of mature lymphocytes. Intravenous infusion of a number of BMC in suspension equivalent to that grafted in hind limb transplant was less efficient in reconstitution of lymphoid tissue.
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