代谢
/已经证明/细胞色素P-450(CYP)的诱导剂和抑制剂影响暴露于C57Bl小鼠的含68.5%(CP-SH)、55.9%(CP-SH)和17.4%Cl(CP-SL)的(14)C标记的多氯代十二烷(C12)降解为(14)CO2的速率。抑制剂胡椒基丁氧提前处理减少了形成的(14)CO2量,且随着氯化度的增加,这种减少更为明显。抑制剂美替拉酮减少了(14)CO2的呼出量,但只在暴露于C12;68.5%Cl的小鼠中进行了研究。细胞色素P-450(CYP2B1; CYP2B2)诱导剂,苯巴比妥,适度增加了含68%Cl氯化石蜡形成(14)CO2的速率,而P-448(CYP1A1; CYP1A2)诱导剂,3-甲基胆蒽,并未影响降解速率,这表明氯代十二烷通过细胞色素P-450依赖性代谢产生(14)CO2。/短链氯化石蜡/
/It was/ demonstrated that inducers and inhibitors of cytochrome P-450 (CYP) affect the rate of degradation of (14)C-labeled polychlorinated dodecanes (C12) containing 68.5% (CP-SH), 55.9% (CP-SH) and 17.4% Cl (CP-SL) to (14)CO2 in exposed C57Bl mice. Pretreatment with the inhibitor piperonyl butoxide decreased the amount of (14)CO2 formed, and the decrease was more pronounced with increasing degree of chlorination. The inhibitor metyrapone decreased the exhalation of (14)CO2 but was only investigated in mice exposed to C12;68.5% Cl. The cytochrome P-450 (CYP2B1; CYP2B2) inducer, phenobarbital, moderately increased the rate of (14)CO2 formation from chlorinated paraffin with 68% Cl, whereas the P-448 (CYP1A1; CYP1A2) inducer, 3-methylcholanthrene, did not affect the degradation rate, indicating a cytochrome P-450-dependent metabolism of chlorinated dodecanes yielding (14)CO2. /Short chain length chlorinated paraffin/
来源:Hazardous Substances Data Bank (HSDB)