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. 2021 Nov 8;19:359. doi: 10.1186/s12951-021-01092-z

Table 3.

Ex vivo skin permeation parameters

Healthy skin Damaged skin
TH TH-NP TH TH-NP
J (μg/cm2/h) 12.68 ± 1.73 8.03 ± 0.55 a 26.43 ± 2.13 a b d 21.03 ± 0.92 a b
Kp (cm/h) 5.07E−03 ± 6.91E−03 3.21E−03 ± 2.19E−04 a 1.06E−02 ± 3.51E−04 a b d 8.41E−03 ± 3.69E−04 a b
Ap (μg/cm2) 106.43 ± 9.96 96.39 ± 12.68 272.36 ± 14.02 a b d 202.58 ± 11.65 a b
As (μg/cm2) 6.19 ± 1.45 10.85 ± 1.12 a c 5.92 ± 0.92 10.83 ± 2.13 a c
At (μg/cm2) 112.61 ± 11.41 107.24 ± 13.80 278.28 ± 14.93 a b d 213.78 ± 13.78 a b
SSD (p < 0.01) a b c d

J: flux, Kp: permeability constant, Ap: total amount penetrated, As: total amount retained inside the skin, At: total amount penetrated and retained inside the skin