Nuclear magnetic resonance-based plasma metabolomics revealed the protective effect of tea polyphenols on sulfur mustard-induced injury in rats.

Tea polyphenols (TP) are the major antioxidant components from tea, which could be beneficial to oxidative stress injury, such as sulfur mustard (SM) exposure. However, the holistic efficacy of TP on SM poisoning remains unexplored and needs further investigation. In this study, Nuclear magnetic resonance(NMR)-based metabolomics along with multivariate statistical analysis was used to explore the metabolic alteration after SM injury and the protective mechanism of TP. Thirteen potential plasma biomarkers of SM injury were identified, which primarily related to synthesis of ketone bodies, arginine and proline metabolism, butanoate metabolism and alanine aspartate and glutamate metabolism. After TP pre-treatment, the biomarkers were mostly restored to normal levels, which suggested that TP provided effective protection against SM injury and might play its role by rebalancing disordered metabolism pathways. This work enhanced our comprehension of the metabolic profiling of SM injury and revealed the protective mechanism of TP.