Mitochondrial and lysosomal protective agents ameliorate cytotoxicity and oxidative stress induced by cyclophosphamide and methotrexate in human blood lymphocytes

• Published in: Human & experimental toxicology 2019-11, Vol.38 (11), p.1266-1274
• Main Authors: Salimi, A, Pirhadi, R, Jamali, Z, Ramazani, M, Yousefsani, BS, Pourahmad, J
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Antineoplastic Agents - toxicity; Blood; Butylated Hydroxytoluene - pharmacology; Cell Survival - drug effects; Cell viability; Cells, Cultured; Chloroquine; Chloroquine - pharmacology; Collapse; Cyclophosphamide; Cyclophosphamide - toxicity; Cyclosporine - pharmacology; Cyclosporins; Cytotoxicity; Depletion; Glutathione; Glutathione - metabolism; Humans; Immunosuppressive Agents - toxicity; Lipid peroxidation; Lipids; Lymphocytes; Lymphocytes - drug effects; Lymphocytes - metabolism; Lysosomes - drug effects; Membrane permeability; Membrane potential; Methotrexate; Methotrexate - toxicity; Mitochondria; Mitochondria - drug effects; Mitochondria - physiology; Oxidation; Oxidative stress; Oxidative Stress - drug effects; Peripheral blood; Peroxidation; Protective Agents - pharmacology; Reactive oxygen species; Reactive Oxygen Species - metabolism; Stabilizers (agents); Toxicity; Young Adult
• ISSN: 0960-3271; 1477-0903
• DOI: 10.1177/0960327119871096

Cyclophosphamide (CYP) and methotrexate (MTX) have been evaluated for their ability to induce toxicity in human peripheral blood lymphocytes (PBLs) and the protective role of mitochondrial and lysosomal stabilizing agents. The potential toxicity effects of CYP and MTX were measured in vitro by cellular parameters assays such as cellular viability, reactive oxygen species (ROS) formation, mitochondrial membrane permeability transition (mitochondrial membrane potential (MMP)) collapse, lysosomal membrane damage, intracellular reduced glutathione (GSH), extracellular oxidized glutathione (GSSG), and lipid peroxidation. Separately, human lymphocytes were treated with concentrations of 0.1, 0.2, 0.4, 0.8, and 1.6 ng/mL for CYP and 1, 2, 5, and 10 µg/mL for MTX for 6 h. Statistical evaluations showed that CYP and MTX significantly decreased the cell viability at the three highest concentrations when compared with both the negative and solvent controls. In addition, CYP and MTX were significantly induced ROS formation, MMP collapse, lysosomal membrane damage, lipid peroxidation, and GSH depletion compared with the controls. Mitochondrial and lysosomal protective agents like cyclosporine A and chloroquine, respectively, decreased cytotoxicity and oxidative stress induced by CYP and MTX. The present results indicate that CYP and MTX are toxic to human PBLs and their toxicity could be ameliorated by mitochondrial and lysosomal protective agents.