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Nail loss and footpad erosions in beagle dogs given BW 134U, a nucleoside analog
Abstract:
The oral administration of BW 134U to Beagle dogs in a 1-month study was associated with lameness, footpad erosions, and nail loss. Groups of dogs received 60, 120, and 240 mg/kg/day. Compound-related effects were observed in the high dose group and only during the postdose period. Light microscopy revealed prominent cell maturation or radiomimetic defects in the stratum germinativum of the distal phalanges and footpads. The mechanism by which BW 134U produced these cell maturation defects is unknown. There were no signs of adverse effects in other keratin-producing or keratin-containing tissues.
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