Paeoniflorin in antiaging Preparation was qualitatively identified with chemical and TLC methods and quantitatively determined with HPLC. The results showed both tne chemical and TLC method gave fast and accurate results and HPLC was an excellent for quantitative determination with an average recovery of 100.72% and coefficient of variation 1.22%, which is suitable for the quality control of the preparation.

Objective To develop a new method for rapid detection of E.Coli.with a new substrate Na p nitrophenyl ? D glucuronate (PNP Glucu Na). Method The test paper was immersed with of Na p nitrophenyl ? D glucuronate which was synthesized by us and another paper with culture medium and phorphate buffer.Colour change was observed to detect the E.coli. Results An E.coli concerntration of 4?10 7 took 0.5 hour, while a concentration of 4?10 0 took 12 hours. 138 strains of E.coli and 190 strains of other bacteria were examined . The sensitivity was 94.2% and the specificity was 92.6%. Conclusion This method is rapid, accurate, simple, and economical for detecting E.coli.

ObjectiveTo evaluate the relationship between the level of thoracic complete spinal cord injury(SCI) and ambulatory function wearing Reciprocating Gait Orthosis(RGO) through three dimentional gait analysis, and to explore the quantitative indicators of reconstructing walking capacity of thoracic complete SCI patients.Methods10 patients with thoracic complete spinal cord injury of lesion level from T4 to T12 who had experienced RGO gait training for at least 3 months. Three dimentional gait analysis system of Vicon Nexus 1.2 was used to test and examine the gait speed, cadence, stride length, pelvic angle of rotation, hip range of motion(ROM), crutch force, angular velocity of hip flexion and extension phases, etc. Pearson's product moment correlation coefficient and Spearman rank correlation coefficient were used to examine the relationship between the level of spinal cord injury and the kinematic and kinetic values.ResultsThe mean cadence and stride length were (37.4±2.15) steps/min and (91.6±9.09) cm. The mean hip ROM, angular velocity of hip flexion and extension phases were (42.57 °±5.43 °), (20.88 °±2.18 °)/s and (124.75 °±9.31 °)/s respectively. The gait speed, stride length, peak crutch force, hip ROM, mean crutch force and angular velocity of hip extension phase all had significant pertinence with the level of spinal cord injury.ConclusionThe limitation of hip ROM and excessive load of upper limbs mainly result in ambulatory disorder in higher thoracic complete SCI patients who should be undertaken some rehabilitation training to reduce excessive physiological load in order to improve their ambulatory capacity.

Objective To review and summarize the experiences of transcatheter closure of left ventricular-right atrium communication,and discuss the feasibility of interventional therapy for this kind of cardiac abnormalitis.Methods 22 patients who suffered from left ventricular-right atrium communication underwent transcatheter interventional therapy with ventricular septal defect(VSD) occluder.The operating procedures were performed as like as the transcatheter closure of VSD:established the pathway from femoral artery to femoral vein through left ventricle,VSD,right atrium (or from left ventricle to right atrial through the communication) and inferior vena cava,then inserted the polysheath from femoral vein,introduced by the pathway to left ventricle,and implanted VSD occluder through the polysheath to close the shunt.Results The operation succeeded in 21 patients.The cardiac murmur was disappeared in all patients,and there was no residual shunt or aortic regurgitation that conformed by postoperative ventriculography and echocardiography in follow up phase,and the tricuspid regurgitation was lessened than preoperative.The operation abort in 1 patient because of aortic regurgitation after implanting occluder.Conclusions Transcatheter closure of left ventricular-right atrium communication is feasible as the selected occluder is accordant,and atrioventricular block,aortic regurgitation and tricuspid regurgitation can be avoided.

Objective To evaluate the efficacy of benvitimod on allergic contact dermatitis (ACD) in a mouse model of allergic contact dermatitis.Methods Acute and chronic ACD models were established respectively in 42 BALB/c mice through 2,4-dinitrofluorobenzene (DNFB) sensitization and challenge.Then,the BALB/c mice were equally divided into 7 groups with 6 mice in every group:normal control group receiving no treatment,five treatment groups topically treated with 0.1％ dexamethasone solution,0.1％ tacrolimus (FK506) solution,0.5％ benvitimod solution,1.0％ benvitimod solution and 2.0 ％ benvitimod solution respectively,and dehydrated alcohol group treated with dehydrated alcohol only.All the drug solutions were topically applied at 24 and 36 hours after the last challenge in the murine models of acute ACD which were sacrificed at 48 hours,and twice daily from day 7 to 21 after the initial sensitization in the murine models of chronic ACD which were sacrificed on day 21 after the first topical treatment.Ear tissues were obtained from these mice and subjected to measurement of ear thickness and weight,as well as pathological examination and evaluation of inflammatory infiltrate by hematoxylin-eosin (HE) staining.The safety of these drugs was also estimated at the end of treatment.Results In the murine models of acute ACD,benvitimod showed no obvious therapeutic effect at 24 hours,with no significant differences in bilateral difference in ear thickness or weight between the three benvitimod groups and dehydrated alcohol group (all P ＞ 0.05).Meanwhile,in the murine models of chronic ACD,benvitimod markedly decreased the swelling degree of ears,with significant differences between the three benvitimod groups (0.5％,1.0％ and 2.0％) and dehydrated alcohol group in bilateral difference in ear thickness ((71.50 ± 3.15) × 10-3 mm,(75.50 ± 3.02) × 10-3 mm and (69.50 ± 2.59) × 10-3 mm vs.(91.83 ± 2.04) × 10-3 mm,all P＜ 0.01) and weight ((2.33 ± 0.45) mg,(2.30 ± 0.57) mg and (2.38 ± 0.27) mg vs.(3.73 ± 0.33) mg,all P ＜ 0.01) after 3 weeks of treatment.The inflammatory infiltration in ear tissue was significantly attenuated in murine models of both acute and chronic ACD by the three concentrations of benvitimod compared with dehydrated alcohol (all P ＜ 0.01).Conclusions Topical benvitimod can inhibit chronic ACD in mice induced by 2,4-DNFB,but exhibits no obvious effect on acute ACD.No apparent local adverse effects were observed during the treatment with benvitimod in these mice.

Objective To study the expression of epidermal growth factor receptor (EGFR) in cervical car-cinoma and cervical intraepithelial neoplasia(CIN),and to elucidate its relation with the genesis, infiltration, metas-tasis and prognosis of cervical carcinoma. Methods EGFR was determined by means of S-P immunohistochemistry in tissue of 100 cases of cervical carcinoma,60 cases of CIN and 40 cases of controls. Results The overexpression rates of EGFR were 0% (0/40), 51.67% (31/60),78.00% (78/100), respectively in normal cervical epithelium, CIN and cervical tumor tissues. The overexpression rate of EGFR was significantly higher in cervical tumor tissue than in control group(P<0.01). The overexpression of EGFR didn't demonstrate significant association with clinical staging, tumor size, pathological type, differentiation, cervical invasion depth, cervical canal invasion, lymphnode me-tastasis or the prognosis of cervical neoplasm (P>0.05). Conclusion Overexpression of EGFR is worsened with the severity of cervical lesion, suggesting that overexpression of EGFR is correlated with the genesis of cervical neo-plasms,which may be a valuable biological indicator of cervical carcinoma,but is not correlated with clinical patho-logical features and prognosis of cervical carcinoma.

There is no specific treatment for post-polio syndrome. The common applied therapies include mediciation, exercise, cogni-tive behavioural therapy, physiotherapy, occupational therapy, Traditional Chinese Medicine, assistive technology, psychological and social factors adjustment, interdisciplinary comprehensive rehabilitation, and so on.

Objective To evaluate the clinical performance of AQT90 FLEX,a novel time-resolved fluorescence based point-of-care test (POCT) for quantification of D-dimer in elderly patients.Methods The method from Quantitative D-dimer assay (WS/T 477-2015) for testing equipment performance was used as a reference to evaluate the clinical performance of AQT90 FLEX.The correlation was compared between testing results of D-dimer using the AQT90 immune-assay analyzer and those using the ACL TOP coagulation analyzer.Results At high concentration of D-dimer,the within-run precision coefficient of variation (CV)was 2.619％,and at low concentration of D-dimer,the within-run precision CV was 2.767％.The pollution-carrying rate was 0.12％.The measured data from AQT90 and ACL TOP had a correlation coefficient of r =0.9491 (P ＜ 0.01).The equation of the line of best fit for D-dimer with which all AQT90 results can be adapted to the ACL TOP was:AQT90 =2.52 ACL TOP + 0.15.The number from the equation was slightly greater in female than that in male,and it was also increased in elderly.Conclusions The AQT90 FLEX had rational precision and linearity in determination of concentration.There was a high agreement between the testing results from AQT90 and those from ACL TOP.It was recommended to use a slope of 2.52 and an intercept of 0.15 to adjust the D-dimer values of the ACL TOP to the AQT90 FLEX assay systems.POCT for D-dimer by AQT90 FLEX raises feasibility for use in elderly patients.

AIM:To detect the endogenous expression of B-cell leukemia/lymphoma 6 member B (BCL6B) in FHC and LoVo cells, and to investigate the effects of BCL6B on proliferation and migration of LoVo cells for further explo-ring the underlying mechanism .METHODS:The endogenous expression of BCL 6B in the FHC and LoVo cells was detec-ted by RT-PCR and Western blot .The methods of MTT assay , colony formation assay , wound healing assay and Transwell chamber experiment were employed to examine the biological functions of BCL 6B in the LoVo cells.The mRNA and protein levels of BCL6B, cyclin D1 and matrix metalloproteinase-9 ( MMP-9) were determined by RT-PCR and Western blot , re-spectively.The level of phosphorylated protein kinase B (p-AKT) was detected by Western blot.RESULTS:BCL6B ex-pression was notably repressed in the LoVo cells as compared with the FHC cells , which were significantly increased by transfection with pcDNA3.1-BCL6B.The abilities of proliferation and migration of the LoVo cells at 72 h were inhibited by 28.33%(P<0.01) and 36.11%(P<0.05) in BCL6B group.The mRNA levels of cyclin D1 and MMP-9 in the cells of BCL6B group were decreased by 39.90%(P<0.01) and 77.36% (P <0.05), and the protein levels of cyclin D1, MMP-9 and p-AKT were reduced by 44.00%(P<0.05), 47.06%(P<0.01) and 32.88% (P<0.05), respectively. CONCLUSION:BCL6B inhibits proliferation and migration of the LoVo cells , and the PI3K/AKT signaling pathway is in-volved in this process .

BACKGROUND:Primary human lung epithelial cel s are difficult to be isolated and cultured in vitro, which is characterized as limited sources, low cel viability, slow proliferation capacity, and lacking of differentiation capability.
OBJECTIVE:To establish an air-liquid interface model of lung epithelium by in vitro proliferation of human bronchiolar epithelial cel s, which is used for research on function of lung epithelial cel s.
METHODS:Primary human bronchiolar epithelial cel s were isolated using Pronase and DNase I combined digestive methods, and then proliferated using medium containing ROCK kinase inhibitor. The proliferated cel s were used for establishment of the air-liquid interface epithelium model. Cel differentiation was identified using scanning electron microscope, phase contrast microscope and immunofluorescent staining.
RESULTS AND CONCLUSION:The primary human bronchiolar epithelial cel s could be expanded successful y using medium containing ROCK kinase inhibitor, and the basal cel marker Cytokeratin14 was preferential y expressed in the proliferated cel population, indicating that these basal cel s might be the main subpopulation of human lung epithelial stem cel s. Subsequently, the proliferated cel s under the air-liquid interface could differentiate into ciliated cel s and non-ciliated column cel s. The results suggest that the proliferation and differentiation of human bronchiolar epithelial cel s were maintained in the presence of ROCK kinase inhibitor, and the air-liquid interface could promote the differentiation of human bronchiolar epithelial cel s.