Table 2.

Effects of vitexin on the stress tolerance of C. elegans

Stress condition	Treatment	Mean lifespan (h)	Maximum lifespan (h)	Change in mean lifespan (%)	Log-rank test
36°C thermal tolerance	Control	9.0 ± 0.6	15	-	-
	50 μM	10.6 ± 0.7	17	17.4	p=0.063
	100 μM	13.2 ± 0.8	20	45.8	p<0.001***
1 mM Juglone	Control	7.3 ± 0.4	11	-	-
	50 μM	8.8 ± 0.5	14	20.5	p<0.05*
	100 μM	11.5 ± 0.6	16	56.2	p<0.001***

Mean lifespan presented as mean ± S.E.M data. Change in mean lifespan compared with control group (%). Statistical significance of the difference between survival curves was determined by log-rank test using the Kaplan-Meier survival analysis. Differences compared to the control were considered significant at ^* p<0.05 and ^***p<0.001.