title: Cell chip based monitoring of toxic effects on dopaminergic cell.
abstract: Oxidative stress has been implicated in pesticide-induced neurotoxicity, base on its role in cascade of biochemical changes that lead to dopaminergic neuronal cell death. The present study examined the role of oxidative stress and the electrochemical detection by polychlorinated biphenyls (PCBs)-induced toxicant in SH-SY5Y cell. The cells were seed in the RED (Arg-Gly-Asp) nanopatterned coating gold substrate and treated with different concentration of PCBs for 24 h in culture, which induced the change of the cyclic voltammetry (CV) current peak. The CV results showed that PCB significantly decreased the current peaks in dose and time-dependent manner. After antioxidant treatment, the CV of the PCB-treated cell chip increased the current peak. Especially, gluthaione and catalase prevent PCB-induced decrease of CV current peak in the cell. The results demonstrated that the current peak decreased by the PCB and recovered by the antioxidant enzyme. In conclusion, results suggest that the electrochemical-based chip provide crucial information to improvement toward a cell chip system for drug screening application.
authors.affiliation: Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 121-742, Korea.
authors.forename: Jeung Hee
authors.initials: JH
authors.lastname: An
authors.forename: Waleed Ahmed
authors.initials: WA
authors.lastname: El-Said
authors.forename: Jeong-Woo
authors.initials: JW
authors.lastname: Choi
mesh_terms: D000975:Antioxidants / Q000494:pharmacology; D002374:Catalase / Q000378:metabolism; D016923:Cell Death / Q000187:drug effects; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D059290:Dopaminergic Neurons / Q000187:drug effects*; D004353:Drug Evaluation, Preclinical / Q000379:methods; D006801:Humans; D056656:Lab-On-A-Chip Devices; D009474:Neurons / Q000187:drug effects; D018384:Oxidative Stress / Q000187:drug effects; D010575:Pesticides / Q000633:toxicity; D011078:Polychlorinated Biphenyls / Q000633:toxicity; D018675:Toxicity Tests / Q000295:instrumentation / Q000379:methods*
chemical_list: D000975:Antioxidants; D010575:Pesticides; D011078:Polychlorinated Biphenyls; D002374:Catalase