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Table 2 Cytotoxicity and antiviral activity of ellagic acid and antiviral agent ribavirin toward human rhinovirus-4 in HeLa cells using sulforhodamine B bioassay

From: Antiviral activity and possible mode of action of ellagic acid identified in Lagerstroemia speciosa leaves toward human rhinoviruses

Compound

 

HRV-2

HRV-3

HRV-4

 

CC50(μg/mL)

IC50(μg/mL) (±SD)

TIa

IC50(μg/mL) (±SD)

TIa

IC50(μg/mL) (±SD)

TIa

Natural EAb

>100

38 ± 3.2b

>2.6

31 ± 5.2b

>3.2

29 ± 2.5b

>3.4

Pure EA

>100

41 ± 1.1b

>2.4

30 ± 2.4b

>3.3

29 ± 1.7b

>3.4

Ribavirin

>100

70 ± 4.9a

>1.4

71 ± 0.5a

>1.4

63 ± 5.6a

>1.6

  1. Means within a column followed by the same letter are not significantly different (P = 0.05, Bonferroni method).
  2. aTherapeutic index = CC50/IC50.
  3. bEllagic acid.