N-(4-hydroxyphenyl)retinamide induces apoptosis in human retinal pigment epithelial cells: retinoic acid receptors regulate apoptosis, reactive oxygen species generation, and the expression of heme oxygenase-1 and Gadd153
Biochemistry Section, Laboratory of Retinal Cell and Molecular Biology, National Eye Institute, 7 Memorial Drive, Bethesda, MD 20892, USA. samuelw@nei.nih.gov