当前位置： SCI文献检索 > TOXICOLOGY期刊下所有文献 > Comparative carcinogenicity of two structurally similar phenylenediamine dyes (HC blue no. 1 and HC blue no. 2) in F344/N rats and B6C3F1 mice.

Comparative carcinogenicity of two structurally similar phenylenediamine dyes (HC blue no. 1 and HC blue no. 2) in F344/N rats and B6C3F1 mice.

Abstract：

:Toxicology and carcinogenesis studies of 2 structurally-related p-phenylenediamines, HC Blue No. 1, and HC Blue No. 2 were conducted by administering each chemical in feed for 103 weeks to both sexes of Fischer 344/N rats and B6C3F1 (C57BL/6N x C3H/HEN) mice. Diets containing 0, 1500, or 3000 ppm HC Blue 1 were fed to male and female rats and male mice; female mice received diets with 0, 3000, or 6000 ppm. Diets containing 0, 5000, or 10,000 ppm HC Blue 2 were fed to male rats and mice and the females received diets containing 0, 10,000 or 20,000 ppm. These concentrations were compatible with long-term growth and survival. The results demonstrated substantial differences in the neoplastic and non-neoplastic lesions caused by these structural analogs. HC Blue 2 caused histocytosis in lungs and hyperostosis of the skull in rats, and splenic hematopoiesis, fibrous osteodystrophy, and hyperostosis of the skull in mice. These non-neoplastic lesions were not observed in rats or mice treated with HC Blue 1. Contrasting, in male and female mice, HC Blue 1 produced dose-related increases in the incidences of both adenomas and carcinomas of the liver. HC Blue 1 produced a marginally positive trend in hepatocellular nodules and carcinomas in male rats and dose-related increases in hyperplasias and neoplasms of the lungs in female rats. In contrast, there was no evidence of carcinogenicity for HC Blue 2 in either sex of rats or mice, despite the fact that it was administered 3-5 times the dose of the HC Blue 1. Since these 2 nitroaromatic compounds differ only in the methyl vs. 2-hydroxyethyl substituent on the secondary amine of ring carbon 4, the great discordance in their carcinogenicity is most probably due to side group-directed alteration in their metabolic profiles.

journal_name

Toxicology

journal_title

Toxicology

authors

Kari FW,Mennear JH,Farnell D,Thompson RB,Huff JE

doi

10.1016/0300-483x(89)90130-3

subject

Has Abstract

pub_date

1989-06-01 00:00:00

pages

155-65

issue

2

eissn

0300-483X

issn

1879-3185

pii

0300-483X(89)90130-3

journal_volume

56

pub_type

杂志文章

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