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Abstract #25348 Published in IGR 12-1
Stimulation of Prostaglandin EP2 Receptors on RGC-5 Cells in Culture Blunts the Negative Effect of Serum Withdrawal
Kang K D; Andrade da Costa B L S; Osborne N NNeurochemical Research 2010; 1-10
Reduced neurotrophic support is one possible cause for retinal ganglion cells dying in glaucoma. Experiments were designed to investigate the effect of EP2 receptor agonist butaprost on transformed retinal ganglion (RGC-5) cells where reduced neurotrophic support was simulated by serum withdrawal. Cultures were analysed for cell viability, flow cytometry, reactive oxygen species and apoptosis. Western blot and immunohistochemistry were used to provide information for the occurrence of PGE(2) receptor-types. We demonstrated the existence of all four types of PGE(2) receptors in RGC-5 cells and exposure of cultures to butaprost resulted in an elevation of cAMP. Serum deprivation induced RGC-5 cell death was significantly attenuated by butaprost as well as by rolipram and forskolin where intracellular cAMP levels were increased. These data are of value in relation to the possible use of EP2 receptor agonists to reduce both elevated intraocular pressure and retinal ganglion cell death as occurs in glaucoma.
N.N. Osborne. Nuffield Laboratory of Ophthalmology, University of Oxford, Headley Way, John Radcliffe Hospital, West Wing, Oxford, OX3 9DU, United Kingdom. neville.osborne@eye.ox.ac.uk
Classification:
3.6 Cellular biology (Part of: 3 Laboratory methods)
11.8 Neuroprotection (Part of: 11 Medical treatment)
11.4 Prostaglandins (Part of: 11 Medical treatment)
