Objective To observe the early effect of Fructus mume extract on KIM-1 and OPN levels in rats with kidney stone formation induced by nanobacteria and to investigate the therapeutic significance of F.mume extract on early kidney stone formation.Methods Nanobacteria were separated and cultured from human upper urinary calculi.The study group appropriately included 54 healthy male SD rats.The renal calculus model was constructed by tail vein injection of nanobacteria.A kidney stone model was created with an F.mume extract intervention,and rats were killed at different stages of the intervention.Real-time polymerase chain reaction was used to detect the KIM-1 mRNA expression in rat renal tissue,and the KIM-1 concentration in urine was detected by using enzyme-linked immunosorbent assay.We detected kidney tissue stone crystals and OPN expression by using hematoxylin-eosin staining and immunohistochemistry.Results Renal tubules of the experimental model were significantly expanded,that is,the formation of renal tubular stones.The early KIM-1 and OPN expression levels were increased.The above-mentioned changes positively correlated with the injection time of the nanobacteria,and F.mume extract antagonized the changes.Conclusion F.mume extract may be useful for the repair of renal injury to reduce kidney stone formation,which may be related to the gene regulation of KIM-1 and OPN.

Sarcomatoid carcinoma of the renal pelvis is rare. One case of sarcomatoid carcinoma of the left renal pelvis was reported. The patient was diagnosed as sarcomatoid carcinoma of left pyelonephrosis by left percutaneous nephrolithotripsy (PCNL) and biopsy of left pyelonephrosis in another hospital due to left lumbar pain.The patient came to our hospital for laparoscopic left hemiculturectomy and was pathologically diagnosed as left renal pelvic sarcomatoid carcinoma. The patient suffered left retroperitoneal recurrence and bilateral lung metastasis 7 months after surgery and died of cachexia 10 months later.