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  • Title: Mouse strain differences in induction of micronuclei by base analogues and nucleosides.
    Author: Sato S, Takizawa H, Inui N.
    Journal: Mutat Res; 1993 Jan; 301(1):45-9. PubMed ID: 7677943.
    Abstract:
    The frequency of induced micronucleated polychromatic erythrocytes (MNPCEs) was compared in BALB/c, C57BL/6, and DBA/2 mice after intraperitoneal (i.p.) injection of 5-bromodeoxyuridine (BUdR), 5-fluorodeoxyuridine (FUdR), cytosine arabinoside (Ara-C), 6-mercaptopurine (6-MP), 5-bromouracil (5-BU), thymidine (TdR), uridine (UdR), adenosine (AdR) and guanosine (GdR). The experimental procedure was a single i.p. injection followed by harvest at 30 h. The frequency of MNPCEs was significantly increased in all strains by treatment with BUdR, FUdR, Ara-C and 6-MP compared to vehicle control. TdR and UdR induced MNPCEs slightly in BALB/c mice but showed no effect on C57BL/6 and DBA/2 mice. 5-BU, AdR, and GdR did not increase the frequency of MNPCEs in any mouse strain used. These results suggest that BALB/c mice are more susceptible to induction of MNPCEs by clastogenic base analogues and nucleosides than are C57BL/6 or DBA/2 mice.
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