Abstract
Age related macular degeneration (AMD) is the leading cause of blindness among the elderly in the United States (Klein et al., 1992; Klein et al., 2002), and choroidal neovascularization (CNV) accounts for the majority of severe vision loss (Ferris et al., 1984). The current standard treatment for CNV is verteporfin photodynamic therapy (PDT) (Landy and Brown, 2003), which uses a laser to activate a photosensitizing dye accumulated within the CNV. Although PDT causes less damage to the retina overlying CNV than thermal laser, in normal primate (Husain et al., 1996; Kramer et al., 1996; Reinke et al., 1999; Peyman et al., 2000), rabbit (Peyman et al., 2000) and rat (Zacks et al., 2002) models, PDT damages photoreceptors and retinal pigment epithelial (RPE) cells. Although there has been no histologic evidence of damage to normal human retinal cells after PDT (Schlotzer-Schrehardt et al., 2002), patients treated with PDT experience visual disturbances and acute severe vision loss significantly more often than patients receiving placebo (Arnold et al., 2004; Azab et al., 2004). Because neurotrophic agents, such as brain-derived neurotrophic factor (BDNF) have been proven effective in reducing retinal damage in rodents after exposure to constant light (LaVail et al., 1992; Okoye et al., 2003), we hypothesized that BDNF treatment prior to PDT might reduce collateral damage to retinal and RPE cells in normal rats.
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References
Arnold, J. J., Blinder, K. J., Bressler, N. M., Bressler, S. B., Burdan, A., Haynes, L., Lim, J. I., Miller, J. W., Potter, M. J., Reaves, A., Rosenfeld, P. J., Sickenberg, M., Slakter, J. S., Soubrane, G., Strong, H. A. and Stur, M., 2004, “Acute severe visual acuity decrease after photodynamic therapy with verteporfin: case reports from randomized clinical trials-TAP and VIP report no. 3,” Am J Ophthalmol 137:683–96.
Azab, M., Benchaboune, M., Blinder, K. J., Bressler, N. M., Bressler, S. B., Gragoudas, E. S., Fish, G. E., Hao, Y., Haynes, L., Lim, J. I., Menchini, U., Miller, J. W., Mones, J., Potter, M. J., Reaves, A., Rosenfeld, P. J., Strong, A., Su, X. Y., Slakter, J. S., Schmidt-Erfurth, U. and Sorenson, J. A., 2004, “Verteporfin therapy of subfoveal choroidal neovascularization in age-related macular degeneration: meta-analysis of 2-year safety results in three randomized clinical trials: Treatment Of Age-Related Macular Degeneration With Photodynamic Therapy and Verteporfin In Photodynamic Therapy Study Report no. 4,” Retina 24: 1–12.
Ferris, F. L., Fine, S. L. and Hyman, L., 1984, “Age-related macular degeneration and blindness due to neovascular maculopathy,” Arch Ophthalmol 102:1640–1642.
Husain, D., Miller, J. W., Michaud, N., Connolly, E., Flotte, T. J. and Gragoudas, E. S., 1996, “Intravenous infusion of liposomal benzoporphyrin derivative for photodynamic therapy of experimental choroidal neovascularization,” Arch Ophthalmol 114:978–85.
Klein, R., Klein, B. E. and Linton, K. L., 1992, “Prevalence of age-related maculopathy. The Beaver Dam Eye Study,” Ophthalmology 99:933–43.
Klein, R., Klein, B. E., Tomany, S. C., Meuer, S. M. and Huang, G. H., 2002, “Ten-year incidence and progression of age-related maculopathy: The Beaver Dam eye study,” Ophthalmology 109:1767–79.
Kramer, M., Miller, J. W., Michaud, N., Moulton, R. S., Hasan, T., Flotte, T. J. and Gragoudas, E. S., 1996, “Liposomal benzoporphyrin derivative verteporfin photodynamic therapy. Selective treatment of choroidal neovascularization in monkeys,” Ophthalmology 103:427–38.
Landy, J. and Brown, G. C., 2003, “Update on photodynamic therapy,” Curr Opin Ophthalmol 14:163–8.
LaVail, M. M. and Battelle, B. A., 1975, “Influence of eye pigmentation and light deprivation on inherited retinal dystrophy in the rat,” Exp. Eye Res. 21:167–92.
LaVail, M. M., Unoki, K., Yasumura, D., Matthes, M. T., Yancopoulos, G. D. and Steinberg, R. H., 1992, “Multiple growth factors, cytokines and neurotrophins rescue photoreceptors from the damaging effects of constant light,” Proc. Natl. Acad. Sci. USA 89:11249–53.
Okoye, G., Zimmer, J., Sung, J., Gehlbach, P., Deering, T., Nambu, H., Hackett, S., Melia, M., Esumi, N., Zack, D. J. and Campochiaro, P. A., 2003, “Increased expression of brain-derived neurotrophic factor preserves retinal function and slows cell death from rhodopsin mutation or oxidative damage,” J Neurosci 23:4164–72.
Paskowitz, D. M., Nune, G., Yasumura, D., Yang, H., Bhisitkul, R. B., Sharma, S., Matthes, M. T., Zarbin, M. A., Lavail, M. M. and Duncan, J. L., 2004, “BDNF reduces the retinal toxicity of verteporfin photodynamic therapy,” Invest Ophthalmol Vis Sci 45:4190–6.
Peyman, G. A., Kazi, A. A., Unal, M., Khoobehi, B., Yoneya, S., Mori, K. and Moshfeghi, D. M., 2000, “Problems with and pitfalls of photodynamic therapy,” Ophthalmology 107:29–35.
Reinke, M. H., Canakis, C., Husain, D., Michaud, N., Flotte, T. J., Gragoudas, E. S. and Miller, J. W., 1999, “Verteporfin photodynamic therapy retreatment of normal retina and choroid in the cynomolgus monkey,” Ophthalmology 106:1915–23.
Schlotzer-Schrehardt, U., Viestenz, A., Naumann, G. O., Laqua, H., Michels, S. and Schmidt-Erfurth, U., 2002, “Dose-related structural effects of photodynamic therapy on choroidal and retinal structures of human eyes,” Graefes Arch Clin Exp Ophthalmol 240:748–57.
Zacks, D. N., Ezra, E., Terada, Y., Michaud, N., Connolly, E., Gragoudas, E. S. and Miller, J. W., 2002, “Verteporfin photodynamic therapy in the rat model of choroidal neovascularization: angiographic and histologic characterization,” Invest Ophthalmol Vis Sci 43:2384–91.
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Duncan, J.L. et al. (2006). Retinal Damage Caused by Photodynamic Therapy Can Be Reduced Using BDNF. In: Hollyfield, J.G., Anderson, R.E., LaVail, M.M. (eds) Retinal Degenerative Diseases. Advances in Experimental Medicine and Biology, vol 572. Springer, Boston, MA. https://doi.org/10.1007/0-387-32442-9_41
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DOI: https://doi.org/10.1007/0-387-32442-9_41
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