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Table 2 Anti-amoebic activity of the pure contact lens solutions and tannic acid-modified silver nanoparticles (AgTANPs) conjugated with the contact lens solutions after 6–96 h of incubation (% inhibition)

From: Tannic acid-modified silver nanoparticles enhance the anti-Acanthamoeba activity of three multipurpose contact lens solutions without increasing their cytotoxicity

  6 h 24 h 48 h 72 h 96 h
SCA 31.95 ± 1.70 23.15 ± 3.93 37.68 ± 1.16 51.65 ± 2.75 47.15 ± 3.25
SCA + 2.5 p.p.m. AgTANPs 61.18 ± 1.34 51.60 ± 8.50 59.79 ± 11.19 66.02 ± 5.42 61.9 ± 2.41
SCA + 1.25 p.p.m. AgTANPs 61.67 ± 4.63 42.79 ± 19.26 52.03 ± 11.57 60.42 ± 4.25 54.50 ± 0.21
SCA + 0.5 p.p.m. AgTANPs 54.91 ± 3.89 36.88 ± 20.08 47.33 ± 10.25 58.21 ± 3.07 72.77 ± 1.71
SCA + 0.25 p.p.m. AgTANPs 52.49 ± 6.35 35.45 ± 10.65 45.35 ± 6.56 55.95 ± 1.15 51.31 ± 1.13
O-F No activity No activity No activity 35.74 ± 0.95 47.35 ± 2.75
O-F 2.5 p.p.m. AgTANPs 31.11 ± 3.09 21.83 ± 4.85 44.79 ± 4.92 59.58 ± 1.14 57.72 ± 0.55
O-F + 1.25 p.p.m. AgTANPs No activity 4.50 ± 11.51 33.32 ± 4.38 52.78 ± 0.98 52.29 ± 0.24
O-F + 0.5 p.p.m. AgTANPs No activity No activity 16.63 ± 3.70 41.62 ± 3.08 41.15 ± 2.46
O-F + 0.25 p.p.m. AgTANPs No activity No activity No activity 36.82 ± 1.69 36.74 ± 1.77
ReNu No activity No activity 24.23 ± 4.88 43.99 ± 2.10 46.76 ± 0.64
ReNu 2.5 p.p.m. AgTANPs 41.59 ± 2.18 36.63 ± 4.69 56.72 ± 3.58 67.45 ± 2.68 64.59 ± 2.98
ReNu + 1.25 p.p.m. AgTANPs 39.58 ± 2.66 31.17 ± 5.28 50.07 ± 3.57 62.77 ± 2.79 58.85 ± 3.63
ReNu + 0.5 p.p.m. AgTANPs 39.18 ± 0.87 22.60 ± 7.05 45.22 ± 5.33 61.90 ± 2.21 58.56 ± 3.39
ReNu + 0.25 p.p.m. AgTANPs 32.99 ± 4.42 13.47 ± 0.14 43.52 ± 4.20 62.12 ± 7.68 57.55 ± 0.11
  1. No activity indicates a statistically insignificant result (P > 0.05). For other abbreviations, see Table 1