Table 3.

Serum levels of cytokines IL-6, IL-1β, and TNF-α in SKH1 hairless mice with UVB-induced skin aging.

Group	IL-6 (pg/mL)	IL-1β (pg/mL)	TNF-α (pg/mL)
Healthy	10.77 ± 0.35 e	37.52 ± 1.59 e	44.36 ± 3.78 e
UVB-treated	18.33 ± 0.61 a	64.39 ± 3.15 a	71.26 ± 4.58 a
VC	14.37 ± 0.36 c	50.32 ± 2.87 c	52.34 ± 2.30 c
LKTP	16.11 ± 0.28 b	57.17 ± 1.88 b	64.59 ± 3.51 b
HKTP	12.58 ± 0.32 d	44.02 ± 2.03 d	47.33 ± 1.89 d

Values presented are the means ± standard deviation (N = 10/group). ^a–e Mean values with different letters in the same column are significantly different (p < 0.05) according to Duncan’s new MRT. VC: mice were smeared with 5.0% VC solution; LKTP: mice were smeared with 2.5% polyphenols of Kuding tea; and HKTP: mice were smeared with 5.0% polyphenols of Kuding tea.