Oxygen → Albendazole

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SKOV-3 human cystadenocarcinoma cell line, obtained from the American Type Culture Collection (ATCC Accession No. HTB 77) were grown in McCoy's 5a medium with 1.5 mM L-glutamine, 100 units/ml penicillin, and 100 μg/ml streptomycin, supplemented with 10% FCS. Cells were grown to confluence and harvested by trypsinization with 0.25 mg/ml trypsin/EDTA and suspended in the medium before plating. These were then seeded (2×105) on plastic 6-well Corning culture plates. Cultures were maintained in a 37° C. incubator in a humidified atmosphere of 95% O2/5% CO2. Twenty-four hours later, the medium was removed. Subconfluent cultures were washed three times with phosphate buffer followed by incubation for 6 hours with culture medium containing various concentrations of albendazole (0, 0.1, 0.25 and 1.0 μM) dissolved in 1% ethanol. After completion of the treatment period, medium from the wells were individually collected and analysed for the VEGF concentration using an enzyme-linked immunosorbant assay (ELISA) that detects soluble VEGF121 and VEGF165 isoforms (Quantikine R&D systems, Minneapolis, USA).

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