Objective To establish a quantitative method to determine the content of platycodin D,D3 and E in Radix platycodi.Methods High performance liquid chromatagraphy-evaprorative light scattering dector(HPLC-ELSD) method was adopted.Platycodin D,D3 and E were separated by C18(5 ?m,4.6 mm?150 mm) with acetonitrile-water as mobile phase in a gradient program;flow rate was 1.0 mL/min,the temperature of drift tube was set at 113 ℃,and the gas flow(N2) was set at 3.0 L/min.Results The linear ranges of platycodin D,D3 and E were 13.78-275.6 ?g/mL(r=0.999 5),8.40-168.0 ?g/mL(r=0.999 7) and 12.02-240.4 ?g/mL(r=0.999 6),respectively.The average recoveries(n=5) were 98.3%,99.4% and 101.3%,respectively.Conclusion The method is convenient,accurate and reliable,and can be used for the determination of platycodin D,D3 and E in Radix platycodoi.

Objective To study the clinicopathological features of ovarian clear cell carcinoma to pro-vide a basis for the differential diagnosis of whether it originates from endometrioid cyst.Methods A total of 30 patients with ovarian clear cell carcinoma receiving treatment in Jinjiang Municipal Hospital from January 2009 to December 2022 were collected as the research subjects.The patients not originating from endometrioid cysts were included in the control group(n=15)and the patients originating from endometrioid cysts were in-cluded in the observation group(n=15).Macroexamination,microscopic examination,hematoxylin-eosin stai-ning and immunohistochemical staining were used to analyze the clinicopathological characteristics.The gener-al data and pathological examination results of the two groups were statistically analyzed.Results Among the two groups,there were 22 cases(73.33％)of clear cells,3 cases(10.00％)of shoe-tack like cells,2 cases(6.67％)with about half of each cell type,and 3 cases(10.00％)of hyaline bodies or eosinophils.There were 27 cases(90.00％)of aspartic acid peptidase A(Napsin-A)positive and 29 cases(96.67％)of hepatocyte nu-clear factor-1β(HNF-1β)positive.Staging,ascites,lymph node metastasis,abdominal/pelvic metastasis,CA125,complicating endometrioid cyst,coffee-colored fluid in the sac,uneven thickness of the cyst wall,men-strual disorders and infertility all were the influencing factors of ovarian clear cell carcinoma originating from endometrioid cyst(P＜0.05).Conclusion The relevant pathological features could provide an important ref-erence base for the clinical differential diagnosis of whether ovarian clear cell carcinoma originates from endo-metrioid cysts,and it is of great significance to improve the detection rate of ovarian clear cell carcinoma.