Add time:07/26/2019         Source:sciencedirect.com

This study investigates the effect of glycine on cadmium-induced alterations on the viability and activation of the cell line U-937. In this experiment, U-937 cells were pre-treated with 16 μM cadmium (as cadmium chloride). These cadmium-treated cells were later incubated with or without glycine (1–16 μM). After 72 h, it was revealed that glycine significantly (P < 0.05) reduced the tendency of cadmium to reduce the viability of the cells. U-937 cells were also treated with phorbol, 12-myristate, 13-acetate to enhance their transition to the macrophage form. Thereafter, the cells were treated with cadmium with or without glycine (1–16 μM). Twenty-four hours later, the supernatants of each cell culture were assessed for the production of tumour necrosis factor alpha (TNF-α), interleukin 6 (IL-6), interleukin 1 (IL-1), nitric oxide (NO), and catalase activity as indices of the activation of macrophages. The results show that glycine significantly (P < 0.05) reduced the cadmium-induced production of all the markers of the activation of macrophages in a concentration-dependent manner. The findings support the immense antioxidant role of glycine.

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