Abstract
A topic dermatitis (AD) is a common chronic and recurrent skin disorder. The protective effects of sodium butyrate (NaB), a metabolite of short-chain fatty acid breakdown by the gut microbiota, have been widely reported in numerous inflammatory diseases. However, the effect of NaB treatment alone on AD has not been reported. In the current study, AD was induced in BALB/c mice with 2,4-dinitrochlorobenzene (DNCB) for 28 days with NaB (200 mg/kg) treatment by gavage. NaB attenuated AD-induced skin bleeding, scarring, dryness, abrasions and erosions. In addition, NaB inhibited inflammatory cells infiltration and attenuated the expression of inflammatory cytokines and chemokines. Mechanistically, NaB reduced histone deacetylase 3 (HDAC3) expression and NF-κB p65 nuclear translocation by increasing the lysine acetylation levels of STAT1 and NF-κB p65 in AD. Taken together, our study suggests that NaB inhibits inflammatory mediators and ameliorates AD by inhibiting HDAC3 expression, thereby upregulating STAT1 and NF-κB p65 lysine acetylation levels and reducing NF-κB p65 nuclear translocation. Therefore, this study provides a new theoretical basis for NaB in the treatment of AD.
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