Efficacy of Lushi Runzao decoction on ameliorating Sjogren's syndrome: a network pharmacology and experimental verification-based study.

OBJECTIVE: To investigate the possible mechanism underlying the effect of the Lushi Runzao decoction on Sjogren's syndrome using network pharmacology and to verify the mechanismsanimal experiments. METHODS: Available biological data on each drug in the Lushi Runzao decoction were retrieved from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform, and the target proteins of Sjogren's syndrome were retrieved from the GeneCards database. Information regarding Sjogren's syndrome and the targets of the drugs were compared to obtain overlapping elements. This information was imported into the STRING platform to obtain a protein-protein interaction network diagram, following which a "component-target" network diagram was constructed using screened drug components and target informationCytoscape software. The database for annotation, visualization, and integrated discovery was used for Gene Ontology enrichment and Kyoto Encyclopedia of Genes and Genomes pathways analyses. Pathway information predicted by network pharmacology was verified using animal experiments. RESULTS: The Lushi Runzao decoction ameliorated Sjogren's syndrome mainly by influencing tumor necrosis factor as well as certain cytokines and chemokines. The decoction also influenced the interleukin-17 and advanced glycosylation end products (AGE)-receptor for AGE signaling pathways. CONCLUSION: The Lushi Runzao decoction ameliorates Sjogren's syndromemultiple targets and multiple signaling pathways. Network pharmacology is useful for making a comprehensive prediction regarding the efficacy of the Lushi Runzao decoction, and this information may be helpful in clinical research.

Discussion on the Pathogenesis and Treatment of Sjögren's Syndrome Based on YE Gui's Theory of “Upper Dryness Treats Qi and Lower Dryness Treats Blood” / 中医杂志

The pathogenesis of Sjögren's syndrome （SS） was considered to involve external dryness， internal injured essence and blood， yin-deficiency endowment， and abnormal emotion and spirit， and it was believed that SS has the characteristics of dryness and impassability， and the pathogenesis of deficiency-excess in complexity. According to the theory “upper dryness treats qi， and lower dryness treats blood” in YE Gui's monograph “Medical Records for Clinical Guidance”， the dryness was divided into upper dryness and lower dryness syndromes to be differentiated and treated. When treating dryness syndrome， the patient should follow the characteristics of the five zang organs， using soft and cool medicines， avoiding warm and dry medicines， and valuing the animal products. The upper dryness could be treated with Sangxiang Decoction （桑杏汤） to clear the qi and moisten the dryness， Qiaohe Decoction （翘荷汤） to clear the upper with pungent-cool， and Shashen Maidong Decoction （沙参麦冬汤） to nourish yin and promote the production of body fluid. The lower dryness could be treated with Fumai Decoction （复脉汤） to enrich and nourish the five kinds of fluid. Liuwei Dihuang Pill （六味地黄丸） to nourish the kidneys and supplement essence， and Wuren Pill （五仁丸） to moisten the dryness and nourish the blood， which provided a new way of thinking for differentiation of the dryness syndrome.