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  • Title: Accelerated marrow recovery following total-body irradiation after treatment with vincristine, lithium or combined vincristine-lithium.
    Author: Johnke RM, Abernathy RS.
    Journal: Int J Cell Cloning; 1991 Jan; 9(1):78-88. PubMed ID: 2010658.
    Abstract:
    Accelerated post-irradiation recovery of hematopoietic marrow has been reported following treatment with lithium (Li) or vincristine (VcR). Because these two agents appear to exert their effects on different, albeit overlapping, hematopoietic populations, it was felt that combining them might lead to a wider spectrum of enhanced post-irradiation marrow regeneration. Results demonstrated that an accelerated recovery, which appeared to be additive in nature, was observed in the marrow following combined VcR-Li/4.5 Gy total-body irradiation. The combined schedule significantly enhanced post-irradiation recovery of white blood cells, 12-day spleen colony-forming units, erythroid burst-forming units, and fibroblastic colony-forming units over radiation alone; and recovery of marrow cellularity, multipotential colony-forming units (CFU-gemm) and granulocytic/monocytic colony-forming units (CFU-gm) over both radiation alone and either drug given singly with the 4.5 Gy. In addition, while data on the ability of regenerating stroma to support CFU-gm and CFU-gemm did not suggest that VcR was acting to enhance post-irradiation marrow recovery by increasing stromal production of hematopoietic growth factors, Li did appear to increase production of one or more of these factors, and this may be part of its mechanism of action.
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