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J Vet Pharmacol Ther 2013 Dec;36(6):617-20

Depletion of melamine and cyanuric acid in kidney of catfish Ictalurus punctatus and trout Oncorhynchus mykiss.

Stine CB, Nochetto C, Gieseker CM, Evans ER, Hasbrouck NR, Mayer TD, Girard L, Reimschuessel R


A risk assessment conducted in 2007 identified significant knowledge gaps about tissue residues of melamine and related triazine analogs such as cyanuric acid in animals that had eaten contaminated food. The USFDA subsequently designed studies to determine residue levels in muscle, serum, and kidneys of catfish and trout given a single gavage dose of 20 mg/kg body weight (BW) of melamine, cyanuric acid, or 20 mg/kg BW of both compounds simultaneously. Renal triazines were determined by LC-MS/MS at postdose days 1, 3, 7, 14, 28 (and day 42 for trout). When dosed individually, melamine and cyanuric acid kidney residues depleted much faster than those in fish given both compounds together. Combined dose residue depletion was punctuated by extreme outliers due to the formation of persistent renal melamine cyanurate crystals.

Category: Journal Article
PubMed ID: #23682764 DOI: 10.1111/jvp.12058
Includes FDA Authors from Scientific Area(s): Animal and Veterinary
Entry Created: 2013-05-21 Entry Last Modified: 2013-12-01