Objective To study appliction value of quantitative dynamic contrast enhanced MRI(T1-DCE MRI)in preoperative grading of brain glioma.Methods 80 patients who were pathologically confirmed with a tumor grade (WHO grade Ⅰ 20 cases, grade Ⅱ 20 cases,grade Ⅲ 20 cases and grade Ⅳ 20 cases).All patients were examined with MR enhancements and T1-DCE MRI. The original perfusions imaging datas were analyzed using the GE Omni Kinetic software,which produced the transfer constant (Ktrans )map,the rate constant (Kep )map and fractional volume (Ve )map.Choose ROI and get values of Ktrans ,Kep and Ve .Pearson correlation was carried out to analyze the correlation between values of Ktrans ,Kep ,Ve of different grades of gliomas and pathology classifications.The Ktrans ,Kep and Ve values of the different grade gliomas were statistically analyzed using an ANOVA .Receiver operator characteristics (ROC)curve was used to analyze sensitivity and specificity of permeability parameters.Results The Ktrans ,Kep and Ve values of each levels has a strong correlation with pathological grading (r=0.95 1,0.804,0.766).There was obviously statistically significant difference between different grade groups(P < 0.01 )by Ktrans .Kep values have statistically difference between different grades except grade Ⅱ and Ⅲ.Ve values were different between different grades except grade I andⅡand grade Ⅲ and IV.Accord-ing to ROC curve,Ktrans seemed to be a better parameter for evaluating the tumor grade with the highest sensitivity and specificity. With the cutoff thresholds of Ktrans of 0.1 60,0.420 and 0.935,different grades of glioma can be differentiated with sensitivities of 90%,95%,95% and specificities of 95%,95%,85% respectively.Conclusion Quantitative analysis of microcirculation perfusion status of different grade gliomas by Ktrans values obtained from T1-DCE MRI can assessment the degree of the destruction of the blood brain barrier and evaluate the grade of gliomas more accurately before operation.

0.70,cluster in two pairs of medicines are similar. Conclusion:It's reliable to cluster analysis the TCM by regarding the element contents as the character of these medicines. The larger the correlation coefficient is,the more similar the nature,flavor and efficacy of the medicines are,which suggested that trace element contents were closely related to(have much to do with) the flavor,nature and efficacy. The study provides method for the cluster relationship among TCM.

Objective To evaluate the accuracy of MRI diagnosis and the clinical value of multi-MR imaging techniques.Methods Clinical,pathologic and MRI findings were retrospectively reviewed in 25 cases with chronic pancreatitis.The MRI manifestation included pancreatic morphology and volume change,signal feature,dynamic contrast-enhanced MRI and MRCP.The MRI techniques included: both before and after Gd-DTPA enhancement FS FLASH T1WI,FLASH TIWI,HASTE T2WI and MRCP.Results The characteristic signs in diagnosis of chronic pancreatitis were as follows: diffuse enlargement of the body;hypointense on T1WI FS;dynamic contrast-enhanced MRI,lesion and normal area always enhanced at the same time;pancreatic duct dilated like a string of beads which penetrated into the lesion shown by MRCP.Conclusion MRI can detect chronic pancreatitis earlier than CT,and it can display pancreatic duct and pseudo-cysts so is of great value in the diagnoses of chronic pancreatitis.

Objective: To investigate the antioxidant activities of total flavonoids of Actinidiae Radix (TFAR) in vitro and in vivo and the related mechanism. Methods: The anti-oxidant activities of TFAR were determined using DPPH and ABTS radical scavenging assays in vitro. The content of MDA and the activity of SOD and CAT in rat liver tissue were determined. Results: TFAR have showed significant DPPH radical scavenging activity and ABTS free radical scavenging activity and the IC50 values of TFAR were 27.01 and 29.55 mg/mL, respectively. Compared with the model group, the MDA content of liver tissue was significantly decreased in the order of TFAR from low dose to high dose, and the activity of SOD and CAT increased significantly. Compared with model group, gene expression of mRNA of SOD1, SOD2 and GPX1 in liver tissue was up-regulated by each dose group of TFAR. Conclusion: TFAR has anti-oxidant activity in vitro and in vivo, and has a dose-dependent relationship with the expression of mRNA in rat liver tissue.

OBJECTIVEP: To investigate ultrasonic-assisted estraction(UAE) and response surface methodology(RSM) for the extraction of asarinin from Asari Radix et Rhizoma(ARR). METHODS: The RSM was based on a three-level, four-variable Box-Behnken design (BBD). The independent variables were ultrasonic time, liquid to solid ratio, ultrasonic temperature, and ultrasonic power, the dependent variable was extraction rate of asarinin, which was used to estimate the relationship between independent and dependent variables. Box-Behnken design and RSM were used to optimize the process of extraction. The prediction was carried out through comparing the observed and predicted values. Antioxidant activity of the extract of ARR was determined by 1,1-diphenyl-2-trinitrophenylhydrazine(DPPH) and 2, 2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate(ABTS) radical scavenging assays in vitro, and good correlation between extraction rate of asarinin and antioxidant activity was observed. RESULTS: The results indicated that ultrasonic time, liquid to solid ratio, ultrasonic temperature, and ultrasonic power had a significant effect on extraction rate of asarinin. Overall process intensification was achieved with ultrasonic time of 56 min, liquid to solid ratio of 17:1 mL•g-1, ultrasonic temperature of 52℃, and ultrasonic power of 180 W by UAE method. Under optimal conditions, the yield of asarinin was (1.55±0.32) mg•g-1 (n=3), which was in accordance with the predicted yield of 1.58 mg•g-1. The IC50 values of the extract of ARR sample were 29.701 and 64.643 mg•mL-1, respectively. The antioxidant results indicate that the extract of ARR has excellent ability to scavenge free radicals and antioxidant capacity and is expected to be used as a natural antioxidant in industrial applications. CONCLUSION: The extraction technology is simple, reliable and highly predictive.The UAE method is effective for extraction of asarinin from ARR.

Objective: To investigate and analyze antioxidant activities in vitro and the active ingredients of the methanol extract of Actinidia arguta. Methods: In this study, antioxidant activities of extract of A. arguta were carried out by using DPPH and ABTS radical scavenging assays in vitro. Qualitative analysis of major active components was performed by HPLC-DAD-ESI-MS/MS. Results: Extract of A. arguta had good scavenging effect on DPPH and ABTS free radical in vitro, and the EC50 values of scavenging effect of extract of A. arguta on DPPH and ABTS free radical were (26.275 ± 1.464) and (29.826 ± 1.309) mg/mL, respectively. On the basis of UV and mass spectral analysis, a total of 19 chemical compositions were preliminarily identified. Conclusion: extract of A. arguta has good antioxidant activity in vitro, and polyhydroxyl and unsaturated double bonds are the main active constituents.

Objective:To determine bacteriostatic abilities ofArtemisia argyi extracts,and to explore the effect ofArtemisia argyi extracts on oral ulcer in rats.Methods:We extracted the mixture ofArtemisia argyi volatile oils and water-extraction by leaching method and evaluated the anti-microbial effect ofArtemisia argyi extracts on common oral floras in vitro.The rat cheeks were burnt by NaOH to establish the models of oral ulcer.The curative effects of crude drug of Artemisia argyi extracts at 2.0,1.0,0.5 g/mL on oral ulcer in rats were evaluated by measuring the oral ulcer healing time.Serum TNF-α level and expression of proliferating cell nuclear antigen (PCNA) were analyzed by ELASA and immunohistochemical staining.Results:Artemisia argyi extracts obviously inhibited the Staphylococcus aureus and Streptococcus.NaOH-made oral ulcer in rats were successfully established.The crude drug at 2.0 and 1.0 g/mL obviously reduced healing time,significantly inhibited the release of TNF-α,and improved the PCNA level in the ulcer tissues (All P＜0.01).The extracts obviously reduced the local inflammatory reaction and promoted tissue repair of oral ulcer.Conclusion:Artemisia argyi extracts promote tissue repair of oral ulcer via inhibiting bacterial growth,reducing the release of TNF-α and improving the PCNA level.

Objective To explore the clinical outcomes of locking plate fixation of intertrochanteric fractures in patients with deformed proximal femur.Methods A retrospective review was made of the 25 patients with intertrochanteric fracture and deformed proximal femur who had been treated from January 2009 to July 2015.They were 17 men and 8 women,from 22 to 76 years of age (mean,45.2 years).The proximal femoral deformities were postpoliomyelitis syndrome in 6 cases,fibrous dysplasia in 4,malunion in 13,and hip varus caused by implant breakage following intramedullary nailing in 2.By AO classification,there were 4 cases of type 31-A2.1,3 ones of type 31-A2.2,16 ones of type 31-A3.1,and 2 ones of type 31-A3.2.All the patients were treated by open reduction plus locking plate fixation.At the final follow-up,function of the affected hip was evaluated by the Hip Disability and Osteoarthritis Outcome Score (HOOS),and quality of life of the patients was evaluated using the SF-36 health survey questionnaire.Results The 25 patients were effectively followed up for 12 to 24 months (mean,17.4 months).No infection,pneumonia,fat embolism,or deep venous thrombosis of lower limb was observed.The fractures healed without nonunion or refracture after a mean time of 5.9 months (range,from 3 to 6 months) in the 25 patients.By the HOOS evaluation at the final follow-ups,the 25 patients scored,on average,83.7± 15.6 in pain,55.6± 14.1 in symptoms,53.6 ± 9.5 in daily living function,52.7 ± 8.9 in sports and recreational activities and 62.4 ± 12.3 in quality of life;by SF-36 evaluation,they had a mean total score of 71.2 ± 13.8.Both the HOOS and SF-36 scores were not significantly different from the pre-injury values (P ＞ 0.05).Conclusion Locking plate fixation is a simple and effective way for the intertrochanteric fractures complicated with deformed proximal femur because intramedullary nailing is difficult or infeasible.

Objective To evaluate the clinical application of our self-designed ultradistal locking tool in the intramedullary nailing for tibial fractures.Methods From January 2014 to May 2016,175 patients with tibial fracture were treated at our department.They were 119 men and 56 women,from 19 to 73 years of age (average,46.3 years).They were divided into 2 groups according to the different targeting devices used in the intramedullary nailing.Conventional locking tools were used in the 83 patients from January 2014 to January 2015 and our self-designed new ultradistal locking tools in the 92 patients from February 2015 to May 2016.The 2 groups were compared in terms of operation time,frequency of intraoperative fluoroscopy,and successful rate of one-time locking.Results There were no significant differences between the 2 groups in general clinical data(P ＞ 0.05),showing similarities of the 2 groups.The operation time(59.8 ±4.3 min),frequency of intraoperative fluoroscopy(11.0 ± 2.1 times),and rate of one-time successful locking[94.4％ (238/252)] in the ultradistal locking group were significantly better than those in the conventional locking group [73.6 ± 5.3 min,23.0 ± 3.8 times and 85.7％ (180/210),respectively] (P ＜ 0.05).Conclusions Our new ultradistal locking tools are superior to the conventional ones in that they lead to shorter operation time,less intraoperative fluoroscopy and higher successful rate of one-time locking.Additionally,the new locking tools are easy to handle and incur no extra costs.

ObjectiveTo evaluate the curative effect difference between Tong's anterior mesh suspension and modified tension-free vaginal tape-obturator (TVT-O). Methods75 SUI cases were random divided into two groups: Group A (35 cases) were accepted Tong's anterior mesh suspension and group B (40cases) were accepted modified tension-free vaginal tape- obturator. Curative effects, operation safety,and complications and so on, were recorded and compared. ResultsThere had no statistical differences between these two groups on operation time, bleeding lose, operation injury, immediate postoperative urinary retention andcure rates, but the operation expense of group A was cheaper than group B [ (980. 74 ±212.45)yuan vs (2879.06 ±467. 13)yuan , P ＜0.05). ConclusionThe curative effect between two methods were similar. It's a little complicated and fit to be popularized in large hospital to modified tensionfree vaginal tape-obturator. Tong's anterior mesh suspension was performed under completely direct vision,not through pelvic cavity, and it was an economic, convenient and easy way, which not only fit to be popularized in basic hospital, but also a surgical remedial measure to the failures who accepted these operations,such as TVT, SPARC, IVS, MONARC, TOT, TVT-O, etc.