MPO and colonic neoplasm: Arigesavan et al. also reported that carvacrol exerted positive effects on colon cancer resulted from 1,2 dimethylhydrazine (DMH) and dextran sodium sulfate in rats by enhancing the level of antioxidant biomarkers such as GSH, SOD and CAT and decreasing the concentration of oxidant agents including myeloperoxidase (MPO) and nitric oxide (NO) (Arigesavan et al., 2015 ▶).