Carcinogenesis, Teratogenesis & Mutagenesis ›› 2015, Vol. 27 ›› Issue (4): 272-277.doi: 10.3969/j.issn.1004-616x.2015.04.004

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Effects of benzo[a]pyrene and DDT subacute co-exposure on ALT, AST and γ-GT in mice

ZHAO Ran, LIU Min, WANG Juan, ZHENG Fang, GUO Dongbei, FAN Chun   

  1. School of Public Health, Xiamen University, Xiamen 361102, Fujian, China
  • Received:2014-12-19 Revised:2015-03-03 Online:2015-07-30 Published:2015-07-30
  • Contact: 范春,E-mail:fanchun65@163.com E-mail:fanchun65@163.com

Abstract: OBJECTIVE: To explore the effects of benzo[a] pyrene and DDT exposure alone or in combination on ALT,AST and γ-GT in mice. METHODS: Fifty healthy male Kunming mice were divided into 10 groups at random: blank control group (normal feed);solvent control group(equal volume of oil);1,10 mg/(kg·d) B[a]P groups;0.6,6 mg/(kg·d) DDT groups;1 mg/(kg·d) B[a]P+0.6 mg/(kg·d) DDT group;1 mg/(kg·d) B[a]P+6 mg/(kg·d) DDT group;10 mg/(kg·d) B[a]P+0.6 mg/(kg·d) DDT group and 10 mg/(kg·d) B[a]P+6 mg/(kg·d) DDT group. Exposure groups were treated with oil contained B[a]P and DDT once a day. After 31 days of intraperitoneal injection,eyeballs were extracted and ALT,AST and γ-GT were examined in blood. HE slices were made to confirm the liver damage. Using two factors and three levels factorial ANOVA design for data analysis. RESULTS: The levels of ALT and AST in all B[a]P or DDT alone exposure groups were significantly higher than that of the control groups (F=41.308,P=0.000;F=20.083,P=0.000),showing dose-effect relationships in both. But no interaction was observed in co-exposure groups(P=0.258,P=0.264). No significant changes in γ-GT were observed in all B[a]P or DDT alone exposure groups. Neither was there any interactive effect in co-exposure groups(P=0.816). This was in accordance with the observation in HE slice: hydropic degeneration,endolysis and nuclear enlargement in liver cell. CONCLUSION: Under this experimental condition,increasing levels of ALT and AST could be detected in B[a]P or DDT separate exposure groups. But neither could affect γ-GT level. No interactive effects of ALT,AST and γ-GT could be induced in co-exposure groups.

Key words: benzo[a]pyrene, DDT, co-exposure, ALT, AST, γ-GT, interactive effect

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