Analysis of neuroprotective of H. rhamnoides on oxidative
stress induced cytotoxicity using propidium iodide staining
Propidium iodide (PI) is a fluorescent compound, used to stain
cellular DNA in order to evaluate cell viability, DNA content,
cell cycle analysis and DNA damage (Behl et al., 1995). Cells of
1 ท 106 cells/well density were seeded in a 12-well plate and incubated
for 24 h. The cells were then treated with different concentrations
of H. rhamnoides extract (3.2–100 lg/ml) for 24 h, after
which they were exposed to the toxic stress inducerH2O2 for 24 h.
The cells were stained with PI and analyzed along with appropriate controls using flowcytometer (FACSCalibur, BD Bioscience) with emission and excitation range being ex 535/em
617.