About: Cadmium is an environmentally hazardous metal, which causes toxicity in humans. Inhalation of cigarette smoke and industrial fumes containing cadmium are sources of cadmium exposure. It is responsible for the malfunction of various organs, leading to disease particularly in the lungs, liver and kidneys. In the present study, the effect of cadmium chloride (CdCl(2)) on cell viability, and the expression levels of interleukin (IL)-1α and IL-10 cytokines at various concentrations and incubation durations were assessed in MRC-9 human normal lung and A549 human lung cancer cells to elucidate the mechanism of cadmium toxicity. Cell viability was measured using a crystal violet dye binding assay. The expression levels of the cytokines were measured by cytokine specific enzyme-linked immunosorbent assay kits. The viability assay results revealed higher sensitivity of the A549 lung cancer cells to CdCl(2) compared with the normal MRC-9 lung cells. In the normal MRC-9 lung cells, higher expression levels of the cytokines were observed at the lowest CdCl(2) concentration at a shorter exposure time compared with the lung cancer cells. Higher levels of the cytokines were observed in the A549 lung cancer cells at all other times and concentrations compared with the MRC-9 cells, indicating higher levels of inflammation. The cytokine levels were reduced at higher CdCl(2) concentrations and longer exposure durations, demonstrating the toxic effect of cadmium. The results indicated that CdCl(2) affected the expression levels of the cytokines and led to cytotoxicity in human lung cells, and suggested that compounds which reduce inflammation may prevent cadmium toxicity.   Goto Sponge  NotDistinct  Permalink

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  • Cadmium is an environmentally hazardous metal, which causes toxicity in humans. Inhalation of cigarette smoke and industrial fumes containing cadmium are sources of cadmium exposure. It is responsible for the malfunction of various organs, leading to disease particularly in the lungs, liver and kidneys. In the present study, the effect of cadmium chloride (CdCl(2)) on cell viability, and the expression levels of interleukin (IL)-1α and IL-10 cytokines at various concentrations and incubation durations were assessed in MRC-9 human normal lung and A549 human lung cancer cells to elucidate the mechanism of cadmium toxicity. Cell viability was measured using a crystal violet dye binding assay. The expression levels of the cytokines were measured by cytokine specific enzyme-linked immunosorbent assay kits. The viability assay results revealed higher sensitivity of the A549 lung cancer cells to CdCl(2) compared with the normal MRC-9 lung cells. In the normal MRC-9 lung cells, higher expression levels of the cytokines were observed at the lowest CdCl(2) concentration at a shorter exposure time compared with the lung cancer cells. Higher levels of the cytokines were observed in the A549 lung cancer cells at all other times and concentrations compared with the MRC-9 cells, indicating higher levels of inflammation. The cytokine levels were reduced at higher CdCl(2) concentrations and longer exposure durations, demonstrating the toxic effect of cadmium. The results indicated that CdCl(2) affected the expression levels of the cytokines and led to cytotoxicity in human lung cells, and suggested that compounds which reduce inflammation may prevent cadmium toxicity.
Subject
  • Kidney
  • Staining
  • Anti-inflammatory agents
  • Occupational safety and health
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