Document 3207 DOCN M94A3207 TI Further studies on the ability of lithium (Li) to minimize the blood cell toxicity of AZT. DT 9412 AU Gallicchio VS; Kazini S; Townsley E; Hughes NK; Tse KF; Scott KF; Lin J; Birch NJ; Division of Hematology/Oncology, University of Kentucky,; Lexington 40536. SO Int Conf AIDS. 1994 Aug 7-12;10(1):129 (abstract no. PA0137). Unique Identifier : AIDSLINE ICA10/94369368 AB OBJECTIVE: To further investigate the capacity of Li to influence the hematopoietic toxicity of AZT. METHODS: Normal mice (C57BL/6) received dose-escalation AZT (0.1 and 2.5 mg/ml, i.p.) respectively for four-weeks with added Li2CO3 (1 mM). Li was stopped followed by a continuous 4-week period of AZT. Mice were evaluated on a weekly basis for their hematological toxicity by measurement of peripheral blood indices and progenitor cells from marrow and spleen for the eight-week study period. RESULTS: AZT induced dose-dependent toxicity that was measured by reduced indices and progenitor cells from marrow and spleen; however, in the AZT groups receiving Li, toxicity was reduced significantly (P value < 0.05) not only during the course of combined AZT and Li, but more importantly, the ability of Li to influence AZT toxicity carried over in the groups that had previously received Li and now had received only AZT compared to AZT controls. DISCUSSION/CONCLUSIONS: Use of Li provides an effective treatment to minimize AZT toxicity with lasting effects. DE Animal Bone Marrow/DRUG EFFECTS/PATHOLOGY Dose-Response Relationship, Drug Drug Administration Schedule Hematopoietic Stem Cells/CYTOLOGY/DRUG EFFECTS/PATHOLOGY Lithium Carbonate/*PHARMACOLOGY Mice Mice, Inbred C57BL Mitotic Index/DRUG EFFECTS Spleen/DRUG EFFECTS/PATHOLOGY Zidovudine/*TOXICITY MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).