ObjectiveTo investigate the protective effects of Zuogui Wan （ZGW） decoction on nephrotic syndrome （NS） through the regulation of gut microbiota. MethodsThirty male Sprague-Dawley （SD） rats were randomly divided into five groups， with 6 rats in each group： The control group， model group， low-dose group， medium-dose group， and high-dose group. The NS rat model was induced by tail vein injection of 6.5 mg·kg^-1 doxorubicin. After successful modeling， the control and model groups were gavaged with normal saline （10 mL·kg^-1） twice daily， while the low- （50 mg·kg^-1）， medium- （100 mg·kg^-1）， and high-dose （200 mg·kg^-1） groups were gavaged with ZGW （10 mL·kg^-1） twice daily. All rats were administered at fixed intervals daily for 8 consecutive weeks. The therapeutic effects of ZGW on NS in rats were observed， and the optimal dose was screened. Renal and intestinal pathological changes in rats were examined. Fecal samples were collected， and 16S rDNA sequencing technology was used to detect the diversity and abundance of gut microbiota in each group. ResultsCompared with the control group， 24-hour urinary protein， serum creatinine， urea nitrogen， and cholesterol levels significantly increased in the model group （P<0.01）， while serum albumin levels decreased （P<0.01）. These changes were ameliorated in the treatment groups （P<0.05， P<0.01）. Renal pathology revealed intact and orderly arranged glomeruli and renal tubules in the control group. In the model group， glomerular atrophy， widened mesangial areas， podocyte swelling， disordered renal tubular arrangement， and numerous casts were observed. Varying degrees of glomerular atrophy and disordered renal tubular arrangement were seen in the treatment groups. Specific protein assays revealed increased serum levels of kidney injury molecule-1（KIM-1） and α1-microglobulin （P<0.01）， and significantly decreased levels of E-cadherin， Podocin， and Nephrin in renal tissues （P<0.01）， along with a significant increase in transforming growth factor-β（TGF-β） （P<0.01） in the model group. In the treatment groups， serum KIM-1 and α1-microglobulin levels decreased， E-cadherin levels significantly increased （P<0.01）， and TGF-β levels significantly decreased （P<0.01）. Podocin and Nephrin levels increased in the high-dose group （P<0.05）. Additionally， intestinal mucosal atrophy， epithelial cell edema， decreased goblet cells， and multiple inflammatory infiltrations were observed in the model group. The sequencing results of gut microbiota demonstrate that ZGW can significantly ameliorate intestinal dysbiosis in rats， restore the abundance of beneficial bacteria， and exert a profound influence on the compositional profile of gut microbiota. ConclusionZGW can alleviate renal injury in rats with nephrotic syndrome by improving gut microbiota and protecting the intestinal barrier.

s:Professor SHAO Zhao-di is a famous old TCM doctor. She has been engaged in clinical of TCM for a long time, with extensive acquaintance and experiences. This article discussed three cases of her to treat allergic purpura nephritis.

Objective To investigate the changes of hair amino acids contents in patients with chronic kidney disease at stage 1-4 (CKD 1-4) and the intervention effect of Hushen No.Ⅱ, thus to provide modern medical evidences for the theory of kidney having its manifestations in hair. Methods One hundred cases of patients suffering from CKD 1-4 were recruited and were randomly divided into control group and treatment group, 50 cases in each group. And twenty healthy volunteers were included in normal group. The treatment group and control group received conventional treatment, and the treatment group were additionally treated with Hushen No. Ⅱ orally, the treatment lasting 12 months. And then high performance liquid chromatography was used to test the changes of hair amino acids of the three groups before and after treatment. Results Compared with the normal group, 14 kinds of amino acids in the hair of the control group and the treatment group were significantly low ( P<0.05) before treatment. After treatment, 14 kinds of amino acids in the hair of the control group and the treatment group were significantly increased ( P<0.05) as compared with those before treatment, the increase of the treatment group being superior to the control group (P<0.05). Conclusion The abnormal change of 14 kinds of amino acids in the hair of patients with abnormal renal function may contribute to the modern medical material basis of the theory of kidney having its manifestations in hair.