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Abstract Title:

Widespread occurrence of glyphosate in urine from pet dogs and cats in New York State, USA.

Abstract Source:

Sci Total Environ. 2019 Apr 1 ;659:790-795. Epub 2018 Dec 31. PMID: 31096409

Abstract Author(s):

Rajendiran Karthikraj, Kurunthachalam Kannan

Article Affiliation:

Rajendiran Karthikraj

Abstract:

Glyphosate is one of the most widely used herbicides in the United States, which has led to its ubiquitous occurrence in food and water and regular detection in human urine at concentrations of 1-10 μg/L. Data pertaining to health risks arising from the ingestion of glyphosate are limited and are the subject of much debate, which demands the need for more exposure information for this herbicide. Very little is known about glyphosate exposure in pets. In this study, we determined concentrations of glyphosate (Glyp) and its derivatives, methyl glyphosate (Me-Glyp) and aminomethylphosphonic acid (AMPA), in urine collected from 30 dogs and 30 cats from New York State, USA. Glyp was the most predominant compound found in pet urine followed by AMPA and Me-Glyp. The mean urinary concentration of ∑Glyp (sum of Glyp + Me-Glyp + AMPA) in cats (mean: 33.8 ± 46.7 ng/mL) was 2-fold higher than that in dogs (mean: 16.8 ± 24.4 ng/mL). Cumulative daily intakes (CDI) of Glyp in dogs and cats estimated from the urinary concentrations were, on average, 0.57 and 1.37 μg/kg bw/d, respectively. The exposure doses were two to four orders of magnitude below the current acceptable daily intake (ADI) suggested by several international health organizations for humans.

Study Type : Animal Study
Additional Links
Problem Substances : Glyphosate : CK(502) : AC(160)

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