Research Article

Modes of Antiviral Action of Chemical Portions and Constituents from Woad Root Extract against Influenza Virus A FM1

Table 1

Effect of prophylactic treatment on the viability and protection rate of MDCK cells.

GroupsOD560Protection rate (%)
1 : 21 : 41 : 81 : 161 : 21 : 41 : 81 : 16

CB (50 μg/mL)2.126 ± 0.0342.228 ± 0.1672.284 ± 0.0172.218 ± 0.011188.348199.08205.023198.08
Epigoitrin (50 μg/mL)2.197 ± 0.1522.239 ± 0.0502.202 ± 0.1022.041 ± 0.036195.871200.29196.344214.435
PEP portion (1 mg/mL)2.840 ± 0.1502.464 ± 0.0242.407 ± 0.0482.149 ± 0.069 263.467223.91217.912190.821
PEP + ALK + OA (1 mg/mL)2.698 ± 0.0822.090 ± 0.0422.045 ± 0.0892.171 ± 0.028248.58184.61179.879193.135
Ribavirin (100 μg/mL)1.866 ± 0.2511.924 ± 0.3061.614 ± 0.0861.869 ± 0.016161.047167.1134.245161.31

Virus control 0.335 ± 0.073
Cell control 1.286 ± 0.277

PEP: phenylpropanoids portion; PEP + ALK + OA: the mixtures of phenylpropanoids, alkaloids, and organic acid portions. Cell control: normal cells without virus infection and drug treatments. Virus control: cells infected with influenza A FM1 virus. Data of OD560 was mean ± SD. The asterisks indicate a significant difference between the test samples and the virus control according to Student’s t-test. .