The optimum medium for Lactobacillus M7 was systematically studied with SAS system. Firstly, the prime factors affecting lactic acid yield were selected by means of Plackett-Burman design; secondly, the pnme facias were optimized by response rurface analysis. Under the optimum level determined, the yield is increased by 15%.

Objective:This thesis aims to construct the evaluation index system ethics management in Beijing medical institutions for application research.Method:The author applied the evaluation system which was agreed and adjusted by expert groups in four medical and health institutions.Result:After three rounds of expert groups have reached the agreement,the Evaluation Index System on Human Research Ethics Management in Beijing Medi-cal Institutions is established,which contains 6 first-class indicators,16 second-class indicators and 39 third-class indicators.The application on four medical and health institutions show that the evaluation index system is practical,operable and is of high degree of distinction.Conclusion:The evaluation index system is scientific,rea-sonable,practical and is of high degree of validity,credibility and distinction.

Objective To investigate the efficacy and safety of standard access assisted minimally access percutaneous nephrolithotomy (MPCNL) combined with EMS lithotripsy system in treatment of staghorn caculi accompanied with pyonephrosis. Methods From October 2015 to May 2017, we retrospectively analyzed the clinical data of 53 patients of staghorn calculi accompanied with pyonephrosis (55 sides, 2 patients with bilateral) were treated with using the special urology ultrasound, kidney dome puncture path method method to do standard channel assisted MPCNL combined with EMS. To summarize the operation time, stone clearance rate, postoperative hospital stay, postoperative blood transfusion rate and complications. Results 53 patients had a total of 55 kidneys had been established first-staged F24 channels,and successfully gravel stone. The operation time was (82.3 ± 22.5) min; 72.7% of the renal had been established first-staged F24 channels assisted F16/18 dual channel;18.2% for the first phase F24 and secondary phase F16/18 of the dual or multi-channel; 9.1% PCNL combined with retrograde flexible ureteroscope; 4 cases of extracorporeal shock wave lithotripsy. The initial stone-free rate was 70.9% (39/55), total stone-free rate was 89.1% (49/55). 2 patients with postoperative blood transfusion, 1 case of super-selective renal artery embolization to stop bleeding, 3 patients had postoperative fever, 1 case of septic shock, 2 cases of conservative treatment of a small amount of liquid chest, 1 case of apparent low back pain due to urine extravasation, given pain medication.no other serious complications. Conclusions By special urology ultrasound probe guide, use the kidney dome puncture path method to do standard channel assisted MPCNL combined with EMS for the treatment of staghorn calculi accompanied with pyonephrosis, its benefits in high stone-free rate, low renal pelvis pressure, high security rate, low complication rate and so on. Therefore, it is worthy of clinical application.

OBJECTIVETo investigate the effects of electromagnetic radiation on the physiological indices and immune function of operators.

METHODSThe general conditions and electromagnetic radiation awareness rate of 205 operators under electromagnetic radiation were evaluated using a self-designed questionnaire. Physical examination, electrocardiography, and routine urine test were performed in these operators. Peripheral blood was collected from the operators under electromagnetic radiation for blood cell counting and biochemical testing, and their peripheral blood lymphocytes were cultured for determination of chromosomal aberrant frequency and micronucleus frequency. The data from these operators (exposure group) were compared with those of 95 ordinary individuals (control group).

RESULTSThe chief complaint of giddiness, tiredness, dizziness, and amnesia showed significant differences between the exposure group and control group (P < 0.01), and the difference in headache became larger with an increase in working years. The awareness rate of electromagnetic radiation damage was significantly higher in the exposure group than in the control group. The difference in bradycardia was significant between the two groups (P <0.01), and the incidence was higher with longer working years. Significant differences between the two groups were also found in the numbers of individuals with elevated alanine aminotransferase, total bilirubin, and direct bilirubin (P < 0.01), populations with increased lymphocyte ratio and decreased neutrophil ratio (P < 0.01), populations with positive occult blood, urobilinogen, and bilirubin tests, and the number of individuals with increased micronucleus frequency of cultured peripheral blood lymphocytes (P < 0.01). In addition, the exposure group had significantly increased complement C3 and C4 (P < 0.01), significantly increased IgG (P < 0.05), and significantly decreased IgM (P < 0.01), as compared with the control group.

CONCLUSIONElectromagnetic radiation may lead to the changes in physiological indices, genetic effects, and immune function and affect the health and immune function in operators. The adverse effects are increased as the working years increase. So it is important to strengthen occupational protection of operators under electromagnetic radiation.

Adult ; Chromosome Aberrations ; radiation effects ; Electromagnetic Radiation ; Female ; Humans ; Lymphocytes ; radiation effects ; Male ; Middle Aged ; Occupational Exposure ; adverse effects ; Young Adult

In order to clarify the chemical constituents of Si-Wu Decoction rapidly and holistically, we analyzed the ethanol extract of Si-Wu Decoction by UPLC/Q-TOF-MSE and UNIFI which based on traditional Chinese medicine database, the probable structures of 113 compounds were identified. The results show that this method can rapidly and effectively characterize the chemical compounds of Si-Wu Decoction and provide a new solution for identification of components from complex TCM extract.
Chromatography, High Pressure Liquid ; Databases, Pharmaceutical ; Drugs, Chinese Herbal ; chemistry ; Medicine, Chinese Traditional

Objective To design a sitting posture fixation device for the ultrasonic imaging of baby hip joint dysplasia.Methods The device was composed of a riser,a fixation base,No.1 holding plate,No.2 holding plate,a baby fixation plate and two detection windows.The two holding plates made the baby's spine and femurs form a right angle at the sitting posture,so that the standard posture was obtained for hip joint ultrasonic imaging.The detection windows facilitated to gain the optimal image for the both sides of the hip joint.Results The device contributed to acquiring baby hip joint image rapidly with high quality and decreased examination time.Conclusion The device can be used for the massive screening of developmental hip joint abnormality.

AIM To study the chemical constituents of the secondary metabolites of endophytic fungi DL02 from Saposhnikovia divaricata (Turcz.) Schischk.and their biological activities.METHODS The ethyl acetate and methanol extract leavening from S.divaricata was isolated and purified by silica and Sephadex LH-20,then the structures of obtained compounds were identified by physicochemical properties and spectral data.The antifungal and antibacterial activities were determined by the minimum inhibitory concentration method.RESULTS Seven compounds were isolated and identified as β-sitosterol (1),kojic acid (2),stigmasta-7,22-diene-3β,5α,6α-triol (3),uracil (4),allantoin (5),erythritol (6) and adenosine (7).Compound 4 had strong inhibitory effects on pseudomonas aeruginosa with the MIC values of 31.3 μg/mL.CONCLUSION Compounds 2-5 and 7 are isolated from this fungus for the first time.Compounds 4-5 have strong biological activities.

OBJECTIVETo evaluate the long term effects of adjuvant radiotherapy for postoperative breast cancer.

METHODSFrom 1985 to 1986, 162 patients with operable breast cancer were randomly given adjuvant radiotherapy according to clinical stage and involving condition of axillary lymph nodes (LN). The radiotherapy group (RG) was irradiated in the supraclavicular area and/or internal mammary area to 50 Gy, while the control group (CG) was not.

RESULTSThe overall 5-, 10- and 15-year survival rates of the RG were 72.0%, 56.1% and 54.3%, while they were 66.3%, 51.3% and 49.4% in the CG (P > 0.05). Clinical stage I-IIIa and positive or negative LN showed no significant difference in the two groups. But in patients with LN(+) > or = 4, the 5-, 10- and 15-year survival rates of the RG were 55.6%, 38.9% and 37.1%, which were higher than the CG of 29.0%, 16.1% and 16.1% (P < 0.05).

CONCLUSIONAdjuvant radiotherapy can improve the prognosis for breast cancer patients with LN(+) > or = 4, but not for LN(-).

Breast Neoplasms ; mortality ; radiotherapy ; surgery ; Female ; Humans ; Middle Aged ; Radiotherapy, Adjuvant ; Survival Rate

OBJECTIVE To investigate whether Renqing Changjue has a protective effect on acute respiratory dis?tress syndrome (ARDS) induced by endotoxin lipopolysaccharide (LPS) in rabbits. METHODS Thirty-six healthy male New Zealand white rabbits were randomly divided into six groups: normal control group, model group, dexamethasone group, Renqing Changjue high, middle and low dose group, with six rabbits in each group. LPS was used to replicate the ARDS model after five consecutive days of gavage. Arterial pressure, respiratory rate and anal temperature blood were recorded for arterial blood gas analysis at 0, 0.5, 1, 2 and 4 h, respectively. At the end of the four-hour experiment, rab?bits were killed by bloodletting, and the lung tissue was quickly removed to determine the cytokines, SOD, MDA and pathological examination of rabbit lung. RESULTS Renqing Changjue can significantly reduce the pathological changes of lung in ARDS model group. The expression of AQP1 and MPO in rabbit lung was significantly decreased by immuno?histochemistry (P<0.05) ,reduce the lung wet/dry weight ratio, increase the ratio of PaO2/FiO2, inhibit the release of inflammatory factors and scavenge free radicals and antioxidant effects. CONCLUSION Renqing Changjue can effec?tively protect rabbits with acute respiratory distress syndrome induced by LPS, and may protect the lung by inhibiting the release of cytokines and anti-oxidation.

OBJECTIVETo evaluate the feasibility and usability of multi-slice computed tomography (MSCT) in congenital inner ear malformations.

METHODSFourty-four patients with sensorineural hearing loss (SNHL) were examined by a Somatom Sensation 16 (siemens, Germany) CT scanner with following parameters: 120 kV, 100 mAs, 0.75 mm collimation, 1 mm reconstruction increment, a pitch factor of 1 and a field of view of 100 mm. The axial images of interested ears were reconstructed with 0.1 mm reconstruction increment, and a field of view of 50 mm. The 3D reconstructions were done with volume rendering technique (VRT) on the workstation (3D Virtuoso and Wizard,siemens).

RESULTSTwenty-five patients were normal and 19 patients (36 ears) were congenital inner ear malformations among 44 patients scanned with MSCT. Of the malformations, all the axial, MPR and VRT images can display the site and degree in 33 ears. VRT images were superior to the axial images in displaying the malformations in 3 ears with the small lateral semicircular canal malformations. The malformations were Michel deformity (1 ear), common cavity deformity (3 ears), incomplete partition I (3 ears), incomplete partition II (Mondini deformity, 5 ears), vestibular and semicircular canal malformations( 14 ears), vestibular aqueduct dilate( 16 ears, of which 6 ears accompanied by other malformations), the internal auditory canal malformation(8 ears, all accompanied by other malformations).

CONCLUSIONMSCT allows a comprehensively assessing various congenital ear malformations through high quality MPR and VRT reconstructions. VRT images can display the site and degree of the malformations three-dimensionally and intuitionisticly. It is very useful to the cochlear implantation.

Adolescent ; Adult ; Case-Control Studies ; Child ; Child, Preschool ; Congenital Abnormalities ; diagnostic imaging ; Ear, Inner ; abnormalities ; diagnostic imaging ; Female ; Humans ; Male ; Tomography, Spiral Computed ; Young Adult