| Summary: | Xiaochun Zhou,1– 3,* Kaiying He,1,3,* Jing Zhao,1,3 Guohua Wei,3 Qicai You,1,3 Hongxuan Du,1,3 Wenjiao Gu,1,2 Haiyu Niu,1,4 Qiaoying Jin,1,5 Jianqin Wang,3 Futian Tang1,2 1The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, Gansu, People’s Republic of China; 2Department of Cardiovascular Disease, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, Gansu, People’s Republic of China; 3Department of Nephrology, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, Gansu, People’s Republic of China; 4Department of Tumor, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, Gansu, People’s Republic of China; 5Cuiying Biomedical Research Center, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, Gansu, People’s Republic of China*These authors contributed equally to this workCorrespondence: Futian Tang, Department of Cardiovascular Disease, The Second Hospital & Clinical Medical School, Lanzhou University, No. 82, Cuiyingmen, Lanzhou, Gansu, People’s Republic of China, Tel +8613321330515, Email Tangfutian2023@126.comPurpose: To investigate the therapeutic effect and underlying mechanism of a traditional Chinese medicine (TCM) mixture consisting of Astragalus, rhubarb, and saffron in a mouse model of diabetic kidney disease (DKD).Methods: Forty-eight db/db mice received no TCM (DKD model), low-dose TCM, medium-dose TCM, or high-dose TCM, and an additional 12 db/m mice received no TCM (normal control). Intragastric TCM or saline (controls) was administered daily for 24 weeks. Blood glucose, body weight, serum creatinine (SCr), blood urea nitrogen (BUN), blood lipids, and urinary microalbumin were measured every four weeks, and the urinary albumin excretion rate (UAER) was calculated. After 24 weeks, kidney tissues were collected for transcriptome sequencing, and the main functions of these genes were determined via functional enrichment analysis.Results: Compared with the DKD model group, the medium-dose and high-dose TCM groups had significantly decreased levels of SCr, BUN, total cholesterol, triglycerides, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and UAER (all p< 0.05). We identified 42 genes that potentially functioned in this therapeutic response, and the greatest effect on gene expression was in the high-dose TCM group. We also performed functional enrichment analysis to explore the potential mechanisms of action of these different genes.Conclusion: A high-dose of the Astragalus-rhubarb-saffron TCM provided the best prevention of DKD. Analysis of the kidney transcriptome suggested that this TCM mixture may prevent DKD by altering immune responses and oxygen delivery by hemoglobin.Keywords: diabetic kidney disease (DKD), mixture of astragalus, rhubarb, saffron, transcriptome sequencing, db/db mice
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