The cytogenetic and hepatotoxic effects of dioxin on mouse liver cells.

Abstract:

:The cytogenetic and hepatotoxic effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on mouse liver cells were investigated. Male C57BL/6J strain mice, which have TCDD receptors, were given single intraperitoneal injections of 25, 37.5, 75 and 150 micrograms of TCDD/kg body weight or corn oil carrier alone. Two-thirds hepatectomies were carried out at 1 or 7 days after injection and chromosomal aberrations and mitotic indexes of the regenerating hepatocytes were scored 54 hr after hepatectomy. Liver sections from additional intact mice were studied for TCDD-hepatotoxicity at 1, 7 and 30 days after injection. The three high doses of TCDD caused hepatotoxicity with necrosis of liver cells and focal architectural collapse by 30 days after injection. No evidence was obtained of an increase in the frequency of chromosomal structural aberrations at doses that allowed sufficient mitotic activity for cytogenetic evaluation. We conclude that TCDD is not a clastogen for mouse hepatocytes, although high doses cause marked hepatocellular necrosis.

journal_name

Cell Biol Toxicol

authors

Brooks AL,Jordan SW,Bose KK,Smith J,Allison DC

doi

10.1007/BF00141285

subject

Has Abstract

pub_date

1988-03-01 00:00:00

pages

31-40

issue

1

eissn

0742-2091

issn

1573-6822

journal_volume

4

pub_type

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