O. M. Pereira, J. R. Smith, L. Packer,
Photosensitization of human diploid cell cultures by intracellular flavins and protection by antioxidants.
Our results indicate that S. mediterranea produces both ommochromes and porphyrins in its subepithelial pigment cells, and that prolonged light exposure eliminates these cells through a mechanism involving porphyrin -
dependent photosensitization (Figure 8).
St. John's Wort is well known to
cause photosensitization (skin ulcers after exposure to sunlight) in livestock and horses.
(Constitution of the American Society for Photobiology) Photobiology -
Areas Photosensitization - Chlorophylls UV Radiation effects — DNA mutations Environmental photobiology — Plant Productivity Non-visual photoperception — Circadian, photoperiodism Photomorphogenesis — Development of organism Phototropism — Plant movement towards light Photosynthesis — conversion of light energy into chemical energy /
«By inducing the self -
photosensitization of M. thermoacetica with cadmium sulfide nanoparticles, we enabled the photosynthesis of acetic acid from carbon dioxide over several days of light - dark cycles at relatively high quantum yields, demonstrating a self - replicating route toward solar - to - chemical carbon dioxide reduction.»