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1.中国人民解放军南部战区总医院消化内科,广州 510010
2.广东药科大学临床医学院,广州 510006
3.南方医科大学中医药学院,广州 510515
Published:15 October 2024,
Received:09 April 2024,
Revised:21 August 2024,
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胡银霞,陈梓钊,刘昌顺等.润燥止痒胶囊对湿疹大鼠肠道菌群及短链脂肪酸的影响 Δ[J].中国药房,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.
胡银霞,陈梓钊,刘昌顺等.润燥止痒胶囊对湿疹大鼠肠道菌群及短链脂肪酸的影响 Δ[J].中国药房,2024,35(19):2372-2377. DOI: 10.6039/j.issn.1001-0408.2024.19.09.
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.
目的
2
研究润燥止痒胶囊(RZZY)对湿疹大鼠肠道菌群及其代谢物短链脂肪酸(SCFA)的影响,以揭示RZZY对湿疹的改善作用及可能机制。
方法
2
将大鼠分为正常组、模型组、地氯雷他定组(1.5 mg/kg)和RZZY低、高剂量组(0.6、1.2 g/kg)。除正常组外,其余各组大鼠采用2,4-二硝基氯苯溶液涂抹脱毛区域致敏以构建湿疹模型,并灌胃相应药物,每天1次,连续2周。给药完成后,检测大鼠皮肤厚度,并进行湿疹面积及严重度指数(EASI)评分和病理评分;基于16S rDNA测序分析大鼠肠道菌群结构;采用气相色谱-质谱联用仪检测大鼠粪便中SCFA(乙酸、丙酸和丁酸)含量;检测大鼠结肠和皮肤组织中信号转导及转录激活因子3(STAT3)的表达水平。
结果
2
RZZY可明显减轻湿疹大鼠皮肤红肿、溃烂症状,显著减小/降低大鼠EASI、皮肤厚度、病理评分(
P
<0.05);显著升高湿疹大鼠肠道菌群ACE、Sobs和Shannon指数(
P
<0.05),促进大鼠肠道菌群向正常结构回调;提高湿疹大鼠肠道厚壁菌门和毛螺菌属、乳杆菌属、另枝菌属丰度,降低拟杆菌门/属丰度;显著升高湿疹
大鼠粪便中丙酸、丁酸含量(
P
<0.05);显著下调结肠和皮肤组织中STAT3蛋白表达(
P
<0.05)。
结论
2
RZZY可通过调节肠道菌群提高SCFA水平来抑制STAT3表达,从而发挥抗炎作用,进而改善湿疹大鼠的皮肤炎症。
OBJECTIVE
2
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.
润燥止痒胶囊湿疹肠道菌群短链脂肪酸
eczemagut microbiotashort-chain fatty acid
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