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. Author manuscript; available in PMC: 2009 Oct 5.
Published in final edited form as: Photochem Photobiol. 2007 Dec 15;84(2):307–316. doi: 10.1111/j.1751-1097.2007.00255.x

Figure 4.

Figure 4

NG inhibits proteolytic activation of caspases and PARP-1 cleavage. Cells were either untreated or treated with 5 or 10 µm NG immediately after 30 mJ cm−2 UVB irradiation and incubated in culture medium containing NG for 6 or 8 h. The activity of caspases 8, 9 and 3 was quantitated colorimetrically (A). Six hours following different treatments, cell lysates were analyzed by western blotting for PARP-1 cleavage and caspase 9 activity (B). *Shows significant difference from UV-treated cells at P < 0.05.