Comparative Pharmacokinetics of High and Low Doses of the Herbicide Propanil in Mice
| العنوان: | Comparative Pharmacokinetics of High and Low Doses of the Herbicide Propanil in Mice |
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| المؤلفون: | Michael A. Malfatti, Rosana Schafer, Ted J. Ognibene, Kenneth W. Turteltaub, John B. Barnett |
| المصدر: | Chemical Research in Toxicology. 31:1080-1085 |
| بيانات النشر: | American Chemical Society (ACS), 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 0301 basic medicine, Population, Propanil, 010501 environmental sciences, Pharmacology, Toxicology, 01 natural sciences, Article, Mice, 03 medical and health sciences, chemistry.chemical_compound, Pharmacokinetics, In vivo, Animals, Carbon Radioisotopes, education, 0105 earth and related environmental sciences, education.field_of_study, Dose-Response Relationship, Drug, Herbicides, Half-life, General Medicine, Contamination, Mice, Inbred C57BL, Dose–response relationship, 030104 developmental biology, Liver, chemistry, Toxicity, Female, Spleen, Half-Life |
| الوصف: | We have documented that the herbicide propanil is immunotoxic in mice, and our in vitro tissue culture experiments largely recapitulate the in vivo studies. Laboratory studies on environmental contaminants are the most meaningful when these studies are conducted using concentrations that approximate levels in the environment. Many techniques to measure the distribution and pharmacokinetics (PK) on compounds rely on techniques, such as liquid scintillation counting (LSC) of radio-labeled starting compound, that require concentrations higher than environmental levels. The aim of this study was to compare tissue PK after exposure to propanil concentrations more relevant to levels of exposure to agricultural workers and the general population to concentrations previously reported for laboratory studies. To this end, we conducted a study to measure propanil distribution in three immune organs, using ultrasensitive accelerator mass spectrometry (AMS). We used two doses: the lower dose modeled levels expected in the environment or long-term occupational exposure to low doses, while the higher dose was to model the effects of an accidental exposure. Our results showed that the distribution and PK profiles from these two different concentrations was markedly different. The profile of the high dose (concentration) exposure was indicative of saturation of the detoxifying capability of the animal. In contrast, at the lower environmentally relevant concentration, in vivo concentrations of propanil in spleen, liver, and blood dropped to a very low level by 720 min. In conclusion, these studies highlight the differences in PK of propanil at these two doses, which suggests that the toxicity of this chemical should be re-investigated to obtain better data on toxic effects at doses relevant for humans. |
| تدمد: | 1520-5010 0893-228X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c647e83a8c9ce8a2c9d260e12ae30c2 https://doi.org/10.1021/acs.chemrestox.8b00151 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....6c647e83a8c9ce8a2c9d260e12ae30c2 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 15205010 0893228X |
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