Nordihydroguaiaretic Acid Attenuates the Oxidative Stress-Induced Decrease of CD33 Expression in Human Monocytes

Figure 3

Representative phase contrast micrographs showing the effect of NDGA on the damage induced by different concentrations of (a) IAA or (b) H₂O₂ in THP-1 cells. Cells were treated with vehicle (left side) or 20 μM NDGA (right side) by 12 h; after this the cells were exposed to IAA or H₂O₂ for 2 h. After this time these compounds were withdrawn and fresh medium with NDGA was added. Representative images were obtained 24 h after the onset of IAA or H₂O₂ exposure.

(a)

(b)