Abstract
We have previously reported that XY99-5038, a preparation from a specific formula of Traditional Chinese Medicine, could effectively inhibit hydrogen peroxide-induced retinal cell death. In the present study, we investigated the possibility of XY99-5038 to prolong neuronal survival in a long-term retinal neuronal culture. Basic fibroblast survival factor (bFGF), a potent neurotrophic factor, was employed as comparable agent. Retinas of 0 2 days old Sprague-Dawley rats were isolated and dissociated. The cells were maintained in tissue culture for up to 9 weeks in a synthetic serum-free media. XY99-5038 (100 ng/ml) or a vehicle was added to culture every 3 4 days, starting at the first week of culturing. The number of cells were counted and compared for each time point and treatment. Cell viability was also determined by MTT assay, whereas apoptotic cell death was evaluated by the TUNEL assay. XY99-5038 treatment significantly reduced cell loss, increased cell viabil ity, and inhibited apoptosis in this long-term retinal neuronal culture. Our data also show that the protective effect of XY99-5038 is more potent than that of bFGF. Our data suggest that XY99-5038 could be beneficial to the prolongation of neuron survival.
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