Objective To evaluate the effectiveness of Nicked-Titanium Shape-Memory alloy net-like stent in the treatment of high risk patients with benign prostatic hyperplasia Methods 35 high risk patients with benign prostatic hyperplasia were treated with Nicked-Titanium Shape-Memory alloy net-like stent from 1995 to 1998. The results were analyzed retrospectirely. Results 34 cases of the disease were treated successfully at the first session, 30 of whom could urinate immediately after treated. 4 patients had a normal urination in 3 days after operation, the total efficacy rate being 97.1% (34/35). Conclusions The present study shows that Nickel-Titanium Shape-Memory alloy net-like stent for patients with benign prostatic hyperplasia is a safe, efficient and ideal method. The long term efficacy of the stent is in progress.

Objective To investigate the etiologic factors of chronic prostatitis following sexually transmitted urethritis. Methods The pathogens have been detected in 86 patients with chronic prostatitis following sexually transmitted urethritis. Results 57 strains (66.3%) of bacteria were cultured in expressed prostatic secretions(EPS) from 86 patients,in which gonococcus was the majority of cultures,accounting for 38.4%. Chlamydia trachomatis (CT), ureaplasma urialyticum (UU) and gonococcus were also detected by polymerase chain reaction (PCR) in expressed prostatic secretions,25.6%(22/86), 22.0%(19/86),and 43.0%(37/86) showed positive results respectively. Conclusions Gonococcus,chlamydia trachomatis and ureaplasma urialyticum were the main pathogens of chronic prostatitis.The results indicate that pathogen examination plays an important role in treatment of chronic prostatitis following sexually transmitted urethritis.

Objective To report and summarize the improvement of diagnosis and treatment of male pseudohermaphroditism. Methods Among the 21 cases (mean age of 13 years,range from 6 to 31 years),19 were socially female sex and 2 were male sex.Visual clinical examination indicated abnormal external genitalia,lumps on both sides of inguina or labia majora pudendi.Genetic examination showed that the sex chromosome karyotypes of all cases were 46,XY.Before operation diagnoses were established in 20 cases by blood biochemistry,B-ultrasound and CT examination with misdiagnosis in only 1 case. Results All the 21 cases received operation.Female features were retained in 19 cases and male features in 2.Of them 15 cases were followed up for 3 to 8 years.Of the 15 cases 14 were treated by hormone replacement (oral stilbestrol)with obvious improvement of secondary sexual character.Of the 14 cases 11 had normal prepuberal physical development.The appearances of the external genitalia were satisfactory.One patient who maintained male sex had obvious growth of breasts during puberty. Conclusions Early diagnosis and treatment are very important to the therapeutic effects and the life quality of the patients.It is suggested that operation of maintaining female sex can be preferred as treatment of choice for male pseudohermaphroditism.

Objective To study Barrett's esophageal consistency with its histological findings,which were found with magnifying chromoendo6copy,and to advance the endoscopic diagnosis of Barrett's esophagus. Methods The patients with BE were diagnosed by endoscopy and histology, and their histological findings and endoscopic appearances of a total of 67 patients with BE were observed. Results Endoscopic appearances type of BE showed island (28 cases) ,tongue(7 cases) ,and circum ference(32 cases). Three types of BE under magnifying chromoendoscopy,and in magnifying endoscope group,type Ⅲ which were found with magnifying endoscope were verified intestinalisation epithelium pat ho-type, compared with type I and type Ⅱ,the discrepancy of them had statistical significance(P＜0.01). Conclusion Magnifying chromoendoscopy had a relatively better consistency in the diagnosis of Barrett's esophagus with histological findings.

Aim To investigate the effects of iptakalim(IPT),a novel K_(ATP) opener,on the functions of endothelin system in human pulmonary artery endothelial cells.Methods Primary cultured human pulmonary artery endothelial cells were incubated with different concentrations iptakalim for 24 h.The levels of ET-1 in medium were observed by radioimmunoassay.Reverse transcription polymerase chain reaction(RT-PCR)was performed to analyze the expression of ET-1 and ECE.Results When endothelial cells were incubated with IPT at concentrations above 10 μmol·L~(-1),the levels of ET-1 release in medium and the levels of ET-1 mRNA were significantly inhibited.When endothelial cells were incubated with IPT at concentrations above 1 μmol·L~(-1),the levels of ECE mRNA were significantly inhibited.Conclusions IPT can inhibit the expression of ET-1 and ECE mRNA from human pulmonary artery endothelial cells, thus it inhibits the secretion of ET-1 from endothelial cells. Iptakalim may serve as a promising candidate drug to treat pulmonary hypertension.

BACKGROUND:There is no common cognition in the cell type in the temporomandibular joint(TMJ)discs,and names describing TMJ disc cells also vary a lot.OBJECTIVE:To characterize the type and the distribution of cells in the TMJ disc of goats DESIGN,TIME AND SETTING:A single sample observation was completed in Cettutar and Motecutar Biologicat Center and Electron Microscope Center of Lanzhou University from March to May in 2007.MATERlALS:TMJ discs were obtained from two one-month-old healthy goats that were slaughtered freshly.METHODS:Bilateral TMJ discs of goats were cut off completely and were divided into 6 parts by 3 cuts in the major axis direction (mediolaterally)and 2 cuts in the minor axis direction(anteroposteriorly).Then the marked samples were fixed in 10%neutral formalin Iiquid for 24 hours and embedded by paraffin.MAIN OUTCOME MEASURES:Hematoxylin and eosin staining were used to identify regional variation of cell type and cellnumbers.Toluidine blue staining and collagen type Ⅰimmunohistochemical assay were performed to test the distribution of collagens.Transmission etectren microscopy was used to observe the ultrastructure of cells of goat TMJ discs.RESULTS:TMJ discs were comprised of cells and collagen fibers distributing unevenly.Collagens were mostly type Ⅰ.Collagen fibers were wave or crimping and approximately parallel to each other.with cells scattered in their matrix.Fibroblast-like cells and chondrocyte-like cells were the main two types of cells existing,with the former predominating over the later in a ratio of 2.05:1 approximately.There were no significant regional differences in cell type and distribution statistically.Transmission electron microscopy denoted that fibroblast-iike cells have fairly larger fusiform or irregular nuclei with very few organelles,while the chondrocyte-like cells exhibited round or elliptical nuclei,well defined pericellular electron lucent zones,unconspicuous cytocysta and non-distinctive pseudopodia CONCLUSION:There are no significant differences in type,number and arrangement of cells in TMJ discs of one-month-old goats statistically,with Fibroblast-like cells predominating slightly over chondrocyte-like cells.

Object To investigate the saponin from the seeds of Trigonella foenum graecum Linn (STFG) Methods The total saponin from STFG was extracted and purified by using the absorptive resin, the single saponin was isolated by using the column chromatography as well as dry column chromatography of silica gel H The chemical structure was elucidated by 13 CNMR , FAB MS, DEPT spectroscopic evidence and the results of fraction hydrolysis of acquiring their secondary glucosides Results A new saponin A from the total saponin has been obtained, the fraction hydrolysis carried out and the secondary glucoside Ⅰ and Ⅱ identified by determining the structure of saponin A The chemical structure of saponin A is: diosgenin 3 O ? L rhamnopyranosyl(1→4) ? D glucopyranosyl(1→4) ? D glucopyranoside The secondary glucoside Ⅰ is: diosgenin 3 O ? D glucopyranoside; Ⅱ is: diosgenin 3 O ? D glucopyranosyl(1→4) ? D glucopyranoside Conclusion Glucoside A is a new saponin with three molecules of sugar

Object To do detail investigation of the saponins from the Chinese materia medica Huluba (the seeds of Trigonella foenum graecum L ) Methods The pure saponins from the total saponins were isolated by employing the column chromatography and dry column chromatography of silica gel H Their chemical structures were elucidated by 13 C NMR , FAB MS, DEPT spectroscopic evidence and the results of the fraction hydrolysis of acquiring their secondary glucosides were obtained Results Two new saponins B and C were isolated and both were the glucosides consisted by four molecules of sugar with diosgenin The chemical structure of B is: diosgenin 3 O ? L rhamnopyranosyl (1→3) ? L rhamnopyranosyl (1→4) ? D glucopyranosyl (1→4) ? D glucopyranoside And saponin C is: diosgenin 3 O ? D glucopyranosyl (1→4) ? L rhamnopyranosyl (1→4) ? D glucopyranosyl (1→4) ? D glucopyranoside Conclusion Saponins B and C are two new ones with four molecules of sugar respectively

Objective To analyze the serious complications of percutaneous balloon mitral valvuloplasty (PBMV). Methods Between October , 1986,and November, 2000, 1200 patients with rheumatic mitral stenosis age 9-66 older underwent PBMV by Inoue Way. 98% of the balloon catheters were self-made and single balloon catheters.Results Operative successful rate was 98.82% . Serious complications occurred in 51 patients or (4.4%), including 4 cases of death (0.33%), 5 acute serious mitral regurgitation (0.42%), 8 acute cardiac tamponade (0.66%), 28 severe arrhythmia (2.3%), 4 acute left ventricular failure and acute pulmonary edema (0.33%), and 8 systemic thromboembolis. The four cases of death included 1 with acute pulmonary edema, 1 with cardiac arrest, and 2 with acute left ventricular failure with low cardiac output. Conclusion The results demonstrate that PBMV is an efifective and reliable procedure in the treatment of rheumatic mitral stenosis, but a marked decreasement in complication rates is attributable to refinement of patient selection criterion, technical advance in procedure, and strictly management of patients.

Objective: To further explore the mechanism by which retinoic acid (RA) promotes the antibody production of cord blood lymphocytes (CBL). [WT5FZ]Methods: The levels of serum vitamin A in cord blood were measured. The expression of retinoic acid receptor ? (RAR ?) gene was determined by RT PCR (reverse transcription polymerase chain reaction). The IgM concentrations in the supernatants of cell culture were measured by ELISA. [WT5FZ]Results: A positive correlation was found between serum vitamin A level and RAR ? expression level in uncultured CBL:r=0.50 (P