Medical College, Guangxi University, Nanning 530004, Guangxi Zhuang Autonomous Region, China.
Department of Traditional Chinese Medicine, HIV/AIDS Clinical Treatment Center of Guangxi (Nanning), The Fourth People's Hospital of Nanning, Nanning 530023, Guangxi Zhuang Autonomous Region, China.
World J Gastroenterol. 2024 Aug 7;30(29):3488-3510. doi: 10.3748/wjg.v30.i29.3488.
BACKGROUND: Hyperuricemia (HUA) is a public health concern that needs to be solved urgently. The lyophilized powder of has been shown to significantly alleviate HUA; however, its underlying metabolic regulation remains unclear. AIM: To explore the underlying mechanisms of in HUA based on modulation of the gut microbiota and host metabolism. METHODS: A mouse model of rapid HUA was established using a high-purine diet and potassium oxonate injections. The mice received oral drugs or saline. Additionally, 16S rRNA sequencing and ultra-high performance liquid chromatography with quadrupole time-of-flight mass spectrometry-based untargeted metabolomics were performed to identify changes in the microbiome and host metabolome, respectively. The levels of uric acid transporters and epithelial tight junction proteins in the renal and intestinal tissues were analyzed using an enzyme-linked immunosorbent assay. RESULTS: The protein extract of lyophilized powder (49 mg/kg) showed an enhanced anti-trioxypurine ability than that of allopurinol (5 mg/kg) ( < 0.05). A total of nine bacterial genera were identified to be closely related to the anti-trioxypurine activity of powder, which included the genera of , , , , , , , and . Furthermore, 22 metabolites in the serum were found to be closely related to the anti-trioxypurine activity of powder, which correlated to the Kyoto Encyclopedia of Genes and Genomes pathways of cysteine and methionine metabolism, sphingolipid metabolism, galactose metabolism, and phenylalanine, tyrosine, and tryptophan biosynthesis. Correlation analysis found that changes in the gut microbiota were significantly related to these metabolites. CONCLUSION: The proteins in powder were effective for HUA. Mechanistically, they are associated with improvements in gut microbiota dysbiosis and the regulation of sphingolipid and galactose metabolism.
背景:高尿酸血症(HUA)是一个亟待解决的公共卫生问题。已证实 冻干粉末可显著缓解 HUA,但其中的代谢调节机制尚不清楚。
目的:基于调节肠道微生物群和宿主代谢探讨 治疗 HUA 的潜在机制。
方法:采用高嘌呤饮食和氧嗪酸钾注射建立快速 HUA 小鼠模型,给予小鼠口服药物或生理盐水。此外,还进行了 16S rRNA 测序和基于超高效液相色谱-四极杆飞行时间质谱的非靶向代谢组学,分别鉴定微生物群和宿主代谢组的变化。采用酶联免疫吸附试验分析肾和肠组织中尿酸转运蛋白和上皮紧密连接蛋白的水平。
结果: 冻干粉末的蛋白提取物(49mg/kg)的抗三氧嘌呤能力强于别嘌醇(5mg/kg)(<0.05)。鉴定出与 粉末抗三氧嘌呤活性密切相关的共有 9 个细菌属,包括 、 、 、 、 、 、 和 。此外,还发现血清中的 22 种代谢物与 粉末的抗三氧嘌呤活性密切相关,这些代谢物与胱氨酸和蛋氨酸代谢、鞘脂代谢、半乳糖代谢以及苯丙氨酸、酪氨酸和色氨酸生物合成的京都基因与基因组百科全书途径相关。相关性分析发现,肠道微生物群的变化与这些代谢物显著相关。
结论: 粉末中的蛋白质对 HUA 有效。其机制与改善肠道微生物群失调和调节鞘脂及半乳糖代谢有关。
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