Conventional cell culture media do not adequately supply cells with antioxidants and thus facilitate peroxide-induced genotoxicity

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Conventional cell culture media do not adequately supply cells with antioxidants and thus facilitate peroxide-induced genotoxicity.

Commercially available calf serum did not supply the cultured murine fibroblast cell line L929 with amounts of selenium and alpha-tocopherol sufficient to protect against peroxide damage. Supplementation of the culture medium with 30 microM alpha-tocopherol or 50 nM sodium selenite led to a substantial increase of cellular alpha-tocopherol concentrations from 18 +/- 3.0 to 3179 +/- 93.0 pmol/10...

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Poliovirus Particles do not Form in Preinfected Cells with Reovirus

Background and Aims: Inhibition of viral growth in coinfected cells with two different viruses has been described. This phenomenon known as viral interference can occur in several virus host systems such as interference of enterovirus infection on poliovirus vaccine strains. In this study we superinfected reovirus infected HeLa cells with poliovirus to determine if poliovirus can replicate in s...

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Antioxidants Protect Trabecular Meshwork Cells From Hydrogen Peroxide-Induced Cell Death.

PURPOSE To examine the protective effects of antioxidants in cultured trabecular meshwork (TM) cells exposed to oxidative stress. METHODS Primary porcine TM cells were pretreated with 50 μM resveratrol, 0.2 mM urate, 1 mM ascorbate, 1 mM reduced glutathione (rGSH), or 1 mM ρ-coumarate followed by exposure to hydrogen peroxide (0.5-4 mM). Cell metabolism was determined by mitochondrial enzyme ...

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Lipocalin2 Protects Human Embryonic Kidney Cells against Cisplatin–Induced Genotoxicity

Cisplatin is one of the most useful chemotherapeutics which performs its cytotoxic effectvia accumulation of platinum resulting in oxidative stress, and destruction of cell DNA. Thiscould probably cause secondary cancers in healthy tissues. Lipocalin2 (Lcn2) is a protein whichits expression is increased in oxidative stresses. Therefore, the present study was performedto evaluate the protective ...

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Mesenchymal Stem Cells Do Not Suppress Lymphoblastic Leukemic Cell Line Proliferation

Background: Several studies have demonstrated the immunosuppresive effects of mes-enchymal stem cells (MSCs) in allogeneic or mitogenic interactions. Cell-cell contact inhibition and secretion of suppressive soluble factors have been suggested in this re-gard. Objective: To investigate if adipose derived MSCs could inhibit Jurkat lym-phoblastic leukemia T cell proliferation during coculture. Me...

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ژورنال

عنوان ژورنال: Free Radical Biology and Medicine

سال: 1996

ISSN: 0891-5849

DOI: 10.1016/0891-5849(96)00045-7