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  • Title: Effect of p-hydroxyacetanilide, sodium sulfate, and L-methionine on the leukemogenicity of N-[4-(5-nitro-2-furyl)-2-thiazolyl]acetamide.
    Author: Cohen SM, Bryan GT.
    Journal: Cancer Res; 1978 May; 38(5):1398-405. PubMed ID: 639067.
    Abstract:
    Dietary administration of N-[4-(5-nitro-2-furyl)-2-thiazolyl]acetamide to mice for 14 weeks followed by 16 weeks of control diet resulted in a high incidence of lymphocytic leukemia and a low incidence of forestomach squamous cell papillomas. The coadministration of p-hydroxyacetanilide at a dose of 1.0% with either 250 or 500 ppm of N-[4-(5-nitro-2-furyl)-2-thiazolyl]acetamide resulted in inhibition of leukemogenesis, whereas when p-hydroxyacetanilide was coadministered with 1000 ppm of N-[4-(5-nitro-2-furyl)-2-thiazolyl]acetamide the leukemia incidence was not significantly reduced, but the latent period was prolonged. When sodium sulfate was administered with p-hydroxyacetanilide and N-[4-(5-nitro-2-furyl)-2-thiazolyl]acetamide, leukemogenesis was partially restored. L-Methionine, fed in place of sodium sulfate, unblocked leukemogenicity inhibition by p-hydroxyacetanilide. None of these chemicals, p-hydroxyacetanilide, sodium sulfate, or L-methionine, significantly affected the incidence of forestomach papillomas induced by N-[4-(5-nitro-2-furyl)-2-thiazolyl]acetamide, although tumor incidences in all groups were low. p-Hydroxyacetanilide and sodium sulfate had no significant effect on the high incidence of stomach tumors induced by formic acid 2-[4-(5-nitro-2-furyl)-2-thiazolyl]hydrazide or bladder tumors induced by N-[4-(5-nitro-2-furyl)-2-thiazolyl]formamide.
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