Abstract
In this study, we aim to determine the median lethal dose (LD50) of glyphosate isopropylamine salt (GI), which is commonly used in the world and especially in Turkey against to weeds, in male and female rats by using the probit or logit analysis method. A total of 140 Wistar rats were used, including 70 females and 70 males. To determine LD50, the male and female rats were randomized into 7 groups made up of 10 animals in each group. At doses of 6000, 6500, 7000, 7500, 8000, 8500, and 9000 mg / kg, GI was administered to the male and female rats by oral gavage. After dosing, the animals were periodically monitored for 14 days. No deaths were observed after 48 h of herbicide application. In this study, only logit analysis was used for the LD50 value to be calculated in the male rats within 24 h, while other analyses were carried out with the probit method. In the female and male rats, the LD50 levels of GI between 24 and 48 h were determined as 7444.26–7878.50 mg/kg and 7203.58–7397.25 mg/kg, respectively. According to these results, it was concluded that female rats are more sensitive to GI than male rats. We believe that the findings that were obtained will guide researchers, clinicians, and toxicologists through preventive and curative studies against acute poisoning that may occur with GI.
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Acknowledgments
A short summary of this study was orally presented at the 3rd International Scientific Research Congress (UBAK), 09–12 September 2018, in Kozaklı/Nevşehir, Turkey. The authors are thankful for the support of Afyon Kocatepe University Scientific Research Projects Coordination Unit and Laboratory of Experimental Animals Research and Application Center of Afyon Kocatepe University.
Funding
The study was supported by a grant from the Afyon Kocatepe University Scientific Research Projects Coordination Unit (Project no: 18.KARİYER.125).
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Ruhi Turkmen and Ilkay Dogan contributed equally to this work.
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This study was approved by Afyon Kocatepe University Animal Experiments Ethics Committee (No: 31/32; Date: March 13, 2018)
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Turkmen, R., Dogan, I. Determination of acute oral toxicity of glyphosate isopropylamine salt in rats. Environ Sci Pollut Res 27, 19298–19303 (2020). https://doi.org/10.1007/s11356-020-07643-5
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DOI: https://doi.org/10.1007/s11356-020-07643-5