LIU Yuan, WANG Wei, WANG Yan, et al. Effect of Shenling Baizhusan on Expressions of -GCase and ASM of Ceramide Salvage Pathway in Mice with Skin Mechanical Barrier Dysfunction[J]. Chinese journal of experimental traditional medical formulae, 2018, 24(22): 112-119.
LIU Yuan, WANG Wei, WANG Yan, et al. Effect of Shenling Baizhusan on Expressions of -GCase and ASM of Ceramide Salvage Pathway in Mice with Skin Mechanical Barrier Dysfunction[J]. Chinese journal of experimental traditional medical formulae, 2018, 24(22): 112-119. DOI: 10.13422/j.cnki.syfjx.20182219.
Objective:To investigate the effect of Shenling Baizhusan (SLBZS) in repairing the skin mechanical barrier function in mice and the expression of β-glucocerebrosidase (β-GCase) and acid sphingomyelinase (ASM) related to ceramide salvage pathway. Method:A total of 50 SPF ICR mice were randomly divided into the blank control group
the model group
the low-dose SLBZS group (10 g·kg-1)
the middle-dose SLBZS group (20 g·kg-1) and the high-dose SLBZS group (40 g·kg-1). The tape-stripping method was used to replicate the mouse model of the dysfunction of the skin mechanical barrier. The low-dose group
the middle-dose group and the high-dose group were given the corresponding doses of SLBZS by gavage 8 d before modeling. The other groups were given distilled water once a day for 13 days. The transepidermal water loss (TEWL)
skin hydration and skin pH were measured. The pathological changes of skin tissue were observed by hematoxylin-eosin (HE) staining. The protein expressions of β-GCase
ASM were detected by immunohistochemistry. β-GCase and ASM mRNA expressions in skin tissues were detected by Real-time PCR. Result:Compared with the blank control group
the level of TEWL and pH were significantly increased in the model group (P<0.05)
and the skin hydration was decreased in the model group (P<0.01). The expression of β-GCase was decreased in the model group (P<0.05). Compared with the model group
each dose of SLBZS could decrease the levels of TEWL and pH (P<0.01)
and increase the skin hydration (P<0.01). The histopathological changes of the skin were improved to varying degrees. The middle-dose SLBZS group could up-regulate the expression of β-GCase (P<0.05
P<0.01). Conclusion:SLBZS can repair the mechanical barrier function of skin
which may be related to the up-regulation of β-GCase expression and increase of ceramide content.