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Fig. 3 | BMC Microbiology

Fig. 3

From: Violacein induces cell death by triggering mitochondrial membrane hyperpolarization in vitro

Fig. 3

Status of the antioxidant apparatus after violacein treatment. a SOD activity in CHO-K1, MRC-5 and HeLa cells exposed to 0.75–6 μM violacein for 24 h. SOD activity was expressed as U/mL/mg protein. Standard controls using SOD yielded 15.4 U/mL/mg protein of enzymatic activity. b Catalase activity in CHO-K1, MRC-5 and HeLa cells exposed to 0.75–6 μM violacein for 24 h. Catalase activity was expressed as nmol/min/mg protein. Standard controls using CAT yielded 12.3 nmol/min/mg protein of enzymatic activity. c Alterations in the GSH levels of CHO-K1, MRC-5 and HeLa cells exposed to 0.75–6 μM violacein for 24 h. The results are presented as the means ± SD of three experiments run in triplicate (*p < 0.05 treated vs. control). C denotes control

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