Pharmacokinetics and metabolism of hexamethylmelamine in mice after IP administration

✍ Scribed by J. Dubois; G. Atassi; M. Hanocq; F. Abikhalil

• Publisher: Springer
• Year: 1986
• Tongue: English
• Weight: 484 KB
• Volume: 18
• Category: Article
• ISSN: 0344-5704
• DOI: 10.1007/bf00273391

✦ Synopsis

The pharmacokinetics of hexamethylmelamine (HMM) and its first metabolite (hydroxymethylpentamethylmelamine: HMPMM) following IP bolus dose of 200 mg/kg were studied in mice. The drug concentrations were determined by a sensitive reversed-phase HPLC assay. Thus, for the first time, HMM major hydroxylated and demethylated metabolite plasma levels canbedetermined at the same time. Pharmacokinetic data were analyzed by an original method using a nonlinear cost function minimized by a simplex algorithm. An important property of this computer program is that convergence is ensured in contrast to linear or nonlinear least-square regression analysis, which leads to lack of convergence or to false convergence. Both HMM and HMPMM data fit a one-compartment open model. The parameters obtained indicate that the parent drug would probably be rapidly and completely transformed by the human body into HMPMM.