OBJECTIVE:To determine the content of Ephedrine hydrochloride in Xiaoerkechuanling granules by two HPLC methods.METHODS:The chromatographic conditions for the first HPLC method were as follows:the phenomenex C18 column(250 mm?4.6 mm,5 ?m) was used with methanol-water(1∶1) as mobile phase at a detection wavelength of 254 nm;the chromatographic conditions for the second HPLC method were as follows:the phenomenex C18 column(250 mm?4.6 mm,5 ?m)was used with acetonitrile-phosphoric acid solution(contain 0.02 mol?L-1 potassium dihydrogen phosphate and 0.01 mol?L-1 phosphoric acid)(5∶95) as mobile phase at a detection wavelength of 210 nm.RESULTS:By HPLC method one,the linear range of Ephedrine hydrochloride was 0.08 ?g?mL-1～40 ?g?mL-1(r=0.999 9)with the average recovery at 101.72% and the RSD at 2.77%;by the second HPLC method,the linear range of Ephedrine hydrochloride was 0.4 ?g?mL-1～400 ?g?mL-1(r=1.000 0) with the average recovery at 99.60% and the RSD at 2.91%.CONCLUSION:Both of the two HPLC methods are accurate,specific and reproducible,but by the first HPLC method,the extraction was more complete and more operable,and no organic solvent was used.

Objectives:To observe growth suppressive effects of human wild type p53(wt p53) gene on human esophageal cancer cell line. Methods:Using the retroviral vector to introduce exogenous wt p53 gene into human esophageal cancer cell line ECA109,the gene expression and tumor inhibition were studied in vitro and in vivo . Results:The expression of p53 in transfected cell lines(ECA 109/p53 ) was increased.The growth rates and the ability to form colony in soft agar were greatly inhibited in ECA 109/p53 cells versus ECA109/neo and ECA109 cells.The G 0+G 1 ratio increased and S ratio decreased in cell cycle distribution,and apoptosis index significantly rose in the ECA109/p53 cells,which were confirmed by FCM analyzing.The tumorigen icity of ECA109/p53 cells in nude mice was obviously suppressed by exogenous p53. Conclusions:Exogenous wt p53 mediated by retroviral vector could inhibit the growth of human esophageal cancer cell.

Objective To study the diagnostic value of flexible bronchoscope in location and causes of atelectasis.Methods Flexible bronchoscopy examination was carried out on seventy-nine cases of apneumatosis to observe lobar bronchus and segmental bronchus.Lung biopsy and bronchoalveolar lavage were carried out.Results Thirty-two cases were lung cancer,covering 40.5%.Seven cases were pulmonary tuberculosis,covering 8.8%.Thirty-eight cases were inflammation,covering 48.1%.Two cases had foreign matter,covering 2.5%.Conclusions Flexible bronchoscopy is of important clinical value in the location,diagnosis and treatment of atelectasis.

Objective To explore the curative effect of insulin combined with An Er Shu in treatment ofⅡtoⅢ degree pressure sores of elderly patients with diabetes mellitus. Methods A total of 120 cases of elderly diabetes mellitus patients with Ⅱ to Ⅲ degree pressure sores were randomly divided into the control group (30 cases, conventional nursing treatment), the experimental group 1 (30 cases, insulin spray coating), the experimental group 2 (30 cases, An Er Shu brushing besmear), and the experimental group 3(30 cases, insulin combined An Er Shu). The curative effect and the healing time were observed. Results After four weeks treatment total effective rate was 60.0%(18/30) in the control group, 66.7%(20/30) in the experimental group 1, 76.7%(23/30) in the experimental group 2, 100.0%(30/30) in the experimental group 3, and there was significant difference in the 3 experimental groups comparing with the control group, the experimental group 1 and the experimental group 2, respectively (χ2=15.000, 12.000, 5.822, P<0.05 or 0.01). The healing time ofⅡdegree pressure sores was (19.03 ± 0.85) d in the control group, (18.90 ± 0.92) d in the experimental group 1, (18.43 ± 0.82) d in the experimental group 2, and (16.97 ± 1.25) d in the experimental group 3, and there was significant difference in the experimental group 3 comparing with the control group, experimental group 1 and experimental group 2, respectively (t=8.013, 7.918, 8.930, P<0.01), and in the experimental group 2 comparing with the control group (t=3.525, P<0.01). The healing time ofⅢdegree pressure sores was (24.17 ± 1.51) d in the control group, (23.63 ± 1.33) d in the experimental group 1, (23.47 ± 1.25) d in the experimental group 2, and (21.07 ± 1.46) d in the experimental group 3, and there was significant difference in the experimental group 3 comparing with the control group, experimental group 1 and experimental group 2, respectively (t=6.918, 7.048, 9.200, P<0.01). Pressure sores area reduction was (44.47 ± 37.63)%in the control group, (56.50 ± 39.64)%in the experimental group 1, (66.23 ± 37.54)%in the experimental group 2, and (96.52 ± 7.71) % in the experimental group 3, and there was significant difference in the experimental group 3 comparing with the control group, the experimental group 1 and the experimental group 2, respectively (Z=-4.274,-4.274,-3.400, P<0.01). Conclusions Insulin combined An Er Shu in treatment of pressure sores in elderly patients with diabetes mellitus can improve curative effect and shorten the healing time.

Objective To measure the expression of granulocyte colony-stimulating factor receptor (G-CSFR) in human melanocytes and to evaluate the biologic effect of recombinant human granulocyte colony-stimulating factor (rhG-CSF) on human melanocytes.Methods Melanocytes were obtained from circumcision specimens of healthy males,and neutrophils were isolated from heparin-andcoagulated peripheral blood of healthy human followed by a primary culture.Then,the melanocytes in third passage were cultured with or without the presence of various concentrations (200,400,600,800 μg/L) of rhG-CSF for 72 hours.The growth and morphology of melanocytes were observed.Flow cytometry was performed to detect the expression of G-CSFR in untreated human melanocytes,neutrophils and erythroleukemia cells (HEL 92.1.7).Western blot and reverse transcription PCR (RT-PCR) were carried out to measure the expression of G-CSFR protein and mRNA respectively in the neutrophils,HEL 92.1.7 cells,treated or untreated human melanocytes.Methyl thiazolyl tetrazolium (MTT) assay was performed to evaluate the proliferation,and dopa-oxidation assay to estimate the tyrosinase activity,of treated melanocytes.Results The expression rate of G-CSFR was 76.81％ ± 10.70％ in human melanocytes,significantly higher than that in the HEL 92.1.7 cells (2.53％ ± 1.54％,P ＜ 0.01 ),but lower than that in the neutrophils (85.76％ ± 15.71％,P ＜ 0.05).Both G-CSFR protein and mRNA were expressed in melanocytes,and there was no significant differences in the expression level of G-CSFR protein and mRNA among melanocytes treated with different concentrations of rhG-CSF (both P ＞ 0.05).The expression levels of G-CSFR protein and mRNA in the melanecytes were significantly higher than those in the HEL 92.1.7 cells (both P ＜ 0.01 ),but lower than those in the neutrophils (P ＜ 0.05 or ＜ 0.01 ).rhG-CSF at 200-800 μg/L displayed a significantly promotive effect on the proliferation of melanocytes (P ＜ 0.01 or ＜ 0.05 ),and the effect was in a dose-dependent manner when rhG-CSF ranged from 200 to 600 μg/L (P ＜ 0.01 ).The rhG-CSF at 600 μg/L and 12-O-tetradecanoyl-phorbol-13-acetate (TPA) at 20 μg/L showed an equivalent effect on the proliferation of melanocytes (164.04％ ± 13.0％ vs.165.62％ ± 10.6％,P ＞ 0.05).However,rhG-CSF from 200 to 800 μg/L had no significant impact on the tyrosinase activity of melanocytes (all P ＞ 0.05 ).Conclusions G-CSFR is expressed in human melanocytes. rhG-CSF can promote the proliferation of cultured human melanocytes,but has no obvious influence on the tyrosinase activity of melanocytes.

Objective To investigate the regulation of metabolize characteristic of some antibiotics in ACST in human bile, and provide the theoretic basis for physician selecting antibiotic rationally when biliary tract has been infected. Methods Samples of ACST in human bile were obtained by ERCP + ENBD, contents of Cefradine, Cefoperazone, Ceftriaxone, Ciprofloxacin and Lomefloxacin in human bile were simultaneously measured by HPLC method. Results After antibiotics were given through iv 0. 25 ～ 1. 5 hour, an increase was observed in contents of all antibiotics in bile, and the changes of Ceftriaxone and Ciprofloxa-cin were the most significant ( P <0.01). Ceftriaxone and Ciprofloxacin had a higher Cmax than other antibiotics, and Cefoperazone had a longer tl/2. Conclusion As maintaining a little time to tmax , a higher Cmax and a longer tl/2 in the bile by iv, Cefradine and Ciprofloxacin are recommended in the patient with ACST.

Objective To explore the CT manifestations of pediatric mesenechymal hamartoma of liver (MHL).Methods Clinical data of 15 cases with MHL confirmed by surgery and pathology were retrospectively analyzed.All children were performed with CT scans including plain and enhanced scans,and the imaging features were analyzed.Results All the lesions were solitary,and 9 masses located at the right lobe of liver,4 located at the left lobe,the others located at both right and left lobe.The maximum diameter of lesions was from 5 cm to 30 cm,with an average of (11.52±6.84) cm.Ten cases were cystic and solid mixed,5 cases were solid.After contrast administration,the solid component and the septa of the masses showed enhancement while no enhancement was observed in the cystic component.Two cases had the spot-like calcification.Conclusion MHL has some special characteristics in the CT scan before surgery,which should be differentiated from other cystic and solid tumors of live.Some MHLs can be diagnosed when combined with the clinical information and CT images.

Objective To evaluate the role of endorectal ultrasonography with coupling gel intrarectal filling in preoperative T stage of rectal cancer. Methods One hundred and fifteen patients with rectal cancer underwent endorectal ultrasonography with coupling gel intrarectal filling. The preoperative T stage according to ultrasonic manifestations was compared with histological findings. Results The total diagnostic accordance rate of preoperative T stage by endorectal ultrasonography with coupling gel intrarectal filling was 89.57%. The sensitivity of ultrasonography for T1, T2, T3 and T4 was 93.10%, 61.11%, 96.61%, 88.89%, while the specificity was 97.67%, 96.91%, 89.29%, 99.06%, respectively. The overstaging rate of ultrasonography was 6.96% (8/115), and the understaging rate was 3.48% (4/115). Conclusion Endorectal ultrasonography with coupling gel intrarectal filling is a valuable diagnostic method for T stage of rectal cancer.

To investigate the nature of syndrome of traditional Chinese medicine by means of pharmacokinetic (PK) method.