Demonstrating the reliability of in vivo metabolomics-based chemical grouping: Part 2 – Consistency of group-specific metabolic effects - Summary - MDSpire
To assess whether metabolic responses for three chemical effect-groups were consistent across five ring-trial partners and whether discriminatory metabolite profiles could be interpreted using existing knowledge of androgen receptor activity, peroxisome proliferation, and anaemia.
Approach:
Study context: The work extended the MATCHING project, which analysed plasma from rats exposed to eight substances at high or low doses for 28 days and previously found consistent assignment to three effect-groups.
Analysis: Partners independently identified and annotated metabolites distinguishing effect-groups from controls. The study evaluated consistency across partners, separately for female and male rats, and assessed profiles against literature- and pathway-database-derived…
Key Findings:
The earlier MATCHING analysis found that quality-controlled partner datasets consistently assigned the eight substances to three effect-groups despite methodological differences.
The context provided describes the aims and analysis plan of this follow-up, but does not report its results.
Interpretation:
The study was designed to test whether reproducible group-specific metabolic responses could support plausible toxicological interpretations aligned with the proposed effects.
Limitations:
The supplied context ends during the methods description and does not include follow-up results.
The proposed mAE knowledge base was derived from existing literature and pathway databases.
by G. R. Lloyd, C. Sands, A. Kende, V. Haake, E. Amstalden, M. Bouhifd, T. Ebbels, F. Lai, P. E.G. Leonards, U. Simanainen, T. Sobanski, A. D. Southam, L. Swindale, R. J. M. Weber, F. M. Zickgraf, H. Kamp, M. R. Viant
