Participation of active oxygen species in 6-hydroxydopamine toxicity to a human neuroblastoma cell line

Evelyn Tiffany-Castiglioni, Russell P. Saneto, Peter H. Proctor, J. Regino Perez-Polo

    Research output: Contribution to journalArticle

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    Abstract

    Catalase, Superoxide dismutase, and dimethylsulfoxide were tested for their ability to prevent the cytotoxic effect of 6-hydroxydopamine (6-OHDA) on the human neuroblastoma line SY5Y. Viability was measured at two time points after 6-OHDA treatment: at 3 hr by means of amino acid incorporation and at 24 hr by trypan blue dye exclusion. Survival of cells treated concomitantly with catalase (50 μg/ml) and 6-OHDA was at least 90 per cent that of untreated controls. Cells receiving 6-OHDA alone showed less than 30 per cent survival relative to untreated controls. Superoxide dismutase (50 μg/ml) temporarily protected cells from a high concentration of 6-OHDA. Dimethylsulfoxide treatment increased survival from the control level 24 hr after treatment with 6-OHDA. Two other cell lines (A1B1 human glial cells and CHO fibroblasts) had intermediate and high resistance to the drug, respectively, compared to the low resistance of SY5Y cells. CHO and SY5Y cells had similar responses to 6-OHDA and to H2O2 when tested at twice the molarity of 6-OHDA. Specific activities of three enzymes known to detoxify H2O2 or H2O2-generated organic hydroperoxides (catalase, glutathione S-transferase, and glutathione peroxidase) were compared in the three cell lines. Catalase activity was 2.5 times as high in A1B1 and CHO cells as in SY5Y cells when expressed as units/mg protein and 7 times as high in units/culture dish. Other enzyme activities showed no correlation to 6-OHDA resistance.

    Original languageEnglish (US)
    Pages (from-to)181-188
    Number of pages8
    JournalBiochemical Pharmacology
    Volume31
    Issue number2
    DOIs
    StatePublished - Jan 15 1982

    Fingerprint

    Oxidopamine
    Neuroblastoma
    Toxicity
    Reactive Oxygen Species
    Cells
    Cell Line
    Catalase
    CHO Cells
    Dimethyl Sulfoxide
    Superoxide Dismutase
    Survival
    Trypan Blue
    Level control
    Enzyme activity
    Enzymes
    Fibroblasts
    Glutathione Peroxidase
    Glutathione Transferase
    Drug Resistance
    Neuroglia

    ASJC Scopus subject areas

    • Pharmacology

    Cite this

    Participation of active oxygen species in 6-hydroxydopamine toxicity to a human neuroblastoma cell line. / Tiffany-Castiglioni, Evelyn; Saneto, Russell P.; Proctor, Peter H.; Perez-Polo, J. Regino.

    In: Biochemical Pharmacology, Vol. 31, No. 2, 15.01.1982, p. 181-188.

    Research output: Contribution to journalArticle

    Tiffany-Castiglioni, Evelyn ; Saneto, Russell P. ; Proctor, Peter H. ; Perez-Polo, J. Regino. / Participation of active oxygen species in 6-hydroxydopamine toxicity to a human neuroblastoma cell line. In: Biochemical Pharmacology. 1982 ; Vol. 31, No. 2. pp. 181-188.
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