OBJECTIVE:To establish a method for simultaneous determination of spironolactone and erythromycin in Com-pound spironolactone gel. METHODS:HPLC was performed on the column of Thermo-Hypersil ODS2-C18 with mobile phase of 0.1 mol/L ammonium dihydrogen phosphate solution (pH was adjusted to 7.0 by triethylamine)-acetonitrile (60∶40,V/V) at flow rate of 1.0 ml/min,detection wavelength was 215 nm and 238 nm,column temperature was 30℃,and injection volume was 5 μl. RESULTS:The linear range was 0.251 6-5.032 μg/ml for spironolactone and 0.577 2-11.544 μg/ml(r=0.999 9) for erythromycin (r=0.999 9);RSDs of precision,stability and reproducibility tests were no more than 0.83%;average recoveries were 97.8%(RSD=0.74%,n=9)and 96.7%(RSD=2.60%,n=9),respectively. CONCLUSIONS:The method is simple,reproducible,ac-curate and reliable,and can be used for the quality control of Compound spironolactone gel.

Objective To study the preparation of quercetin compound cream and establish its standard of quality control. Methods The composition of recipe and manufacturing technique were designed.The content of components were determined by HPLC,and its stability tests were carried out.Results The product was a kind of yellow smooth cream.The linear ranges were 0.053-1.696 μg for quercetin(r=0.999 9),0.053-1.696 μg for 8-methoxypsoralen(r=0.999 8)and 0.100-1.000 μg for beta-methasone(r=0.999 9).The average recovery rate were 99.83%,99.52%,and 99.74% of quercetin,8-methoxypsoralen,and beta-methasone(n=9).After 12 months′long term stability test,all the 3 batches of sample preparations were in line with relevant regu-lations.Conclusion The designed recipe was reasonable,and the manufacturing technique was feasible,with stable and controllable quality.

Objective To evaluate the effect of Astragalus on T lymphocyte immune function in peripheral blood and intestinal mucosa of immature rats with obstructive jaundice. Methods Three-week-old Wistar rats were randomly divided into four groups(n=12,in each):control group, sham operation group, obstructive jaundice(OJ)group,OJ+Astragalus (OJ+A)group.The percentage of CD4 and CD8 T lymphocytes, the ratio of CD4 to CD8 in peripheral blood and intestinal mucosa of immature rats was detected by flow cytometry. Result The percentage of CD4+ cell and the ratio of CD4 to CD8 in the OJ group were lower than those in the control group and the sham operation group,with significant difference(P＜0.05).The percentage of CD4 cell and the ratio of CD4 to CD8 in the OJ+A group were higher than those in the OJ group(P＜0.05).Conclusion Astragalus can increase T lymphocyte immune function in OJ immature rats.

Objective:To establish the HPLC fingerprint of ethanol parts of compound Sanhuang tincture ( an anti-infective drug) using high performance liquid chromatography, and analyze the classification of the chemical components. Methods: A Phenomenex Luna C18 (2) (250 mm × 4. 6 mm, 5 μm) column was used. The mobile phase was acetonitrile-0. 05 mol·L-1 aqueous potassium di-hydrogen phosphate solution (22 :78) and the flow rate was 1. 0 ml·min-1 . The DAD detector was used and the detection wavelength was 237 nm. The column temperature was 30 ℃ and the injection volume was 10 μl. Results:The fingerprints of compound Sanhuang tincture were obtained with promising separation degree and the number of theoretical plates. A total of six fingerprint characteristic peaks were identified, and the reproducibility, stability and precision of the method were good. Meanwhile, combined with the informa-tion of retention time of compound medicine, single drug and reference substance, the source of characteristic peak of the effective part of compound Sanhuang tincture was determined. Conclusion:The fingerprints of compound Sanhuang tincture have strong characteris-tics and good reproducibility, which have important reference value for the quality evaluation of ethanol parts of compound Sanhuang tincture.

OBJECTIVETo investigate the sexual development in adolescents after surgical treatment for undescended testes.

METHODSOne hundred and eighty-four adolescents undergoing surgery for cryptorchidism before the age of 10 years, 22 cases received no surgical management for unilateral undescended testes, and 25 normal controls were studied. The pubic stage, the natural length and girth of the penis, the volume of the testis, serum luteinizing hormone (LH), follicle-stimulating hormone (FSH) and testosterone (T) were examined to find out the effect of age, the location of the testis and operative procedures on prognosis.

RESULTSThe pubic stage, the length and girth of the penis, the volume of the testis and T decreased, but FSH and LH increased significantly in 18 adolescents who had undergone bilateral orchiopexy. The volume of the unilaterally undescended testis was significantly smaller than that of the normally descended contralateral gonad in 152 adolescents who had undergone unilateral orchiopexy. FSH was significantly higher in the adolescents surgically treated for unilateral cryptorchidism. Those treated by unilateral orchiectomy presented significantly higher levels of FSH than those by unilateral orchiopexy. The pubic stage, the length and girth of the penis, the volume of the testis and T were significantly higher, but FSH lower in the adolescents treated before the age of 5 years than at the age of 5 or older. The decrease in testicular volume was significantly greater in adolescents with intra-abdominal testes. Significant negative correlation was found between FSH and testicular volume.

CONCLUSIONLeydig cell function seems relatively resistant to the hostile environment of the cryptorchidism. Early diagnosis and management of the undescended testis are needed to preserve fertility.

Adolescent ; Child ; Child, Preschool ; Cryptorchidism ; physiopathology ; surgery ; Follicle Stimulating Hormone ; blood ; Humans ; Infant ; Luteinizing Hormone ; blood ; Male ; Puberty ; Sexual Maturation ; Testosterone ; blood