HU Yinxia,CHEN Zizhao,LIU Changshun,et al.Effect of Runzao zhiyang capsule on gut microbiota and short-chain fatty acids in eczema rats[J].ZHONGGUO YAOFANG,2024,35(19):2372-2377.
HU Yinxia,CHEN Zizhao,LIU Changshun,et al.Effect of Runzao zhiyang capsule on gut microbiota and short-chain fatty acids in eczema rats[J].ZHONGGUO YAOFANG,2024,35(19):2372-2377. DOI: 10.6039/j.issn.1001-0408.2024.19.09.
Effect of Runzao zhiyang capsule on gut microbiota and short-chain fatty acids in eczema rats
To study the effect of Runzao zhiyang capsule (RZZY) on gut microbiota and its metabolites short-chain fatty acids (SCFA) in eczema rats, in order to reveal the improvement effect and possible mechanism of RZZY on eczema.
METHODS
2
The rats were divided into normal group, model group, desloratadine group (1.5 mg/kg), and RZZY low-dose and high-dose groups (0.6, 1.2 g/kg). Except for the normal group, the eczema model was established in other groups by applying the 2,4-dinitrochlorobenzene solution to the hair removal area to sensitize it; they were given relevant drugs intragastrically, once a day, for consecutive 2 weeks. After medication, the skin thickness of rats was measured, and the eczema area and severity index (EASI) scoring and pathology scoring were performed; the structure of gut microbiota was analyzed by 16S rDNA sequencing. The contents of SCFA (including acetic acid, propionic acid, and butyric acid) in feces were determined by gas phase-mass spectrometry. The expressions of signal transduction and activator of transcription 3 (STAT3) in the colon and skin were detected.
RESULTS
2
RZZY significantly alleviated skin swelling and ulceration and reduced EASI, skin thickness and pathological score in eczema rats (
P
<0.05). RZZY significantly increased ACE, Sobs and Shannon indexes (
P
<0.05) and promoted the microbiota of eczema rats to return to normal structure. RZZY increased the abundance of Firmicutes and
Lachnospira
,
Lactobacillus
and
Alistipes
, while decreased the abundance of Bacteroidetes and
Bacteroides
. RZZY significantly increased the contents of propionic
acid and butyric acid in the feces of eczema rats (
P
<0.05), while significantly down-regulated the expressions of STAT3 protein in the colon and skin (
P
<0.05).
CONCLUSIONS
2
RZZY can improve SCFA levels by regulating gut microbiota, thereby inhibiting STAT3 expression, playing an anti-inflammatory role, and improving skin inflammation in eczema rats.
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