Antirheumatoid Arthritis Activities and Chemical Compositions of Phenolic Compounds-Rich Fraction from Urtica atrichocaulis, an Endemic Plant to China

Table 3

Effect of phenolic compounds-rich fraction from Urtica atrichocaulis (TFUA) on the mice writhes induced by acetic acid.

Group	Dose (mg/kg)	Number of writhes in 15 min	Inhibition rate (%)
Vehicle	—	29.5  ±  8.4	—
Aspirin	150	14.3  ±  4.8**	51.5
TFUA	50	20.5  ±  6.4**	30.5
	150	11.7  ±  3.2**	63.4

Values are expressed as mean ± SD. N  =  10. *P  <  0.05, **P  <  0.01 compared with vehicle control.