Objective:Dissolution test was applied to study the dissolution rates of strychnine from the normal and ultramicro powder of semen strychi. Methods:HPLC techniques was used to detect the dissolution amount and the dissolution velocity of strychnine from the normal and ultra-micro powder of semen strychi. Results:The dissolution velocity of strychnine from the ultra-micro powder was higher than that from the normal powder,but there was no difference in the dissolution amount 4 hours later. Conclusion:The dissolution velocity of strychnine from the ultra-micro powder increased greatly and there was no loss of the principal active.

Objective:To study the pharmacokinetic process ofbrucine from normal and ultra-micro powder ofsemen strychni in rat serum.Methods:HPLC techniques were used.All pharmacokinetics parameters were calculated with a 3P87 program.Results:The pharmacokinetics results indicated that the normal powder and the ultra-micro powder ofsemen strychni belonged to two compartment open model.The absorb ofbrucine was just several ten minutes, and there was no obvious difference ofTmax between normal powder and ultra-micro powder.This showed that:Brucine was some material that was easily absorbed.But we can find that Cmax increased from(51.13?0.48)?g/L to(69.26?1.40)?g/L after ultra-micro powder preparation which was quite obvious.K,Ka,B and ? had a obvious increase(P

Background and purpose:Since the number and tumor size of localized liver metastases can be controlled, local minimally invasive treatment can improve the survival of patients. Hence, microwave ablation has become an important treatment method for liver metastases. This study was to investigate the value of percutaneous microwave ablation in the treatment of tumor metastases. Methods: From Sep. 2011 to Oct. 2014, 26 advanced nasopharyngeal carcinoma patients with post-chemotherapy consolidation, liver metastases were collected. All the patients with the number of tumor lesions less than 3, diameter less than 5 cm, no other distant metastases was excluded. The ultrasound-guided percutaneous microwave ablation was used for 26 patients. Finally, 43 ablations were completed followed by liver function test, enhanced CT and MRI diagnosis 1 month later. mRECIST criteria was used to evaluate the effcacy of cancer treatment. Progression-free survival (PFS) and overall survival (OS) were calculated. Results:Twenty-six cases of a total of 53 lesions, including complete ablation (CA) 20 patients (20/26, 77.0%), partial ablation (PA) 3 patients (3/26,11.5%). The overall effciency was 88.5%(CA+PA) with no serious complications. 6 months, 1-, 2-year survival rates of 26 patients were 96.1%, 65.3%and 23.0%. PFS was 11.4 months. The median survival time (MST) was 11.9 months, while OS was 23.7 months. Conclusion:Percutaneous microwave ablation for limited liver metastases of nasopharyngeal carcinoma is a minimally invasive, safe and effective treatment method.

Objective To discuss the clinical application of preoperative tumor-feeding artery emboli -zation in treating hypervascular giant meningiomas.Methods A total of 71 patients with giant meningioma (maximum diameter ＞5 cm),who were admitted to authors' hospital during the period from April 2013 to August 2014,were selected for this study.Preoperative MRI demonstrated that the lesions showed obvious enhancement with rich blood supply.The patients were divided into the study group (using preoperative embolization,n =38) and the control group (not using preoperative embolization,n =33).Based on preoperative DSA findings,the lesions were classified into type Ⅰ and type Ⅱ.Tumor-feeding artery embolization with PAV particles (200-300 μm) was employed in the patients of the study group,while only cerebral angiography was adopted in the patients of the control group.The amount of intraoperative blood loss,tumor resection time and embolization complications in both groups were recorded.Postoperative MRI scan was performed to observe the degree of tumor resection.Results The amount of intraoperative blood loss and the tumor resection time in the study group were (562±178) ml and (5.45±2.13) h respectively,which in the control group were (833±234) ml and (7.23±2.45) h respectively;the differences between the two groups were statistically significant (both P＜0.05).The tumor resection degree of Simpson classification Ⅲ and ＜ Ⅲ was obtained in 27 patients of the study group (27/38,71.0％) and in 19 patients of the control group (19/33,57.6％),the difference between the two groups was statistically significant (P＜0.05).After embolization,cerebral edema became aggravated in 7 patients,ischemic necrosis of the scalp was observed in 2 patients,and one patient developed epileptic seizure during the operation.After symptomatic treatment,all the above complications were relieved.Conclusion For the treatment of hypervascular giant meningiomas,preoperative tumor-feeding artery embolization can strikingly reduce the amount of intraoperative blood loss,shorten the operation time,and improve the tumor resection degree,therefore,this therapy is worthy of clinical promotion and application.

Objective To evaluate the therapeutic effects of Thesium chinensis Turcz extracts on IgA nephropathy (IgAN) rats .Methods The hot water extracted solution of Thesium chinensis Turcz flow through the AB‐8 macroreticular res‐in column repeatedly ,then being eluted with different contents of ethanol to get four part of extract .The IgAN model of SD rats were established by oral intake of bovine serum albumin(BSA ,400 mg/kg) together with injection of lipopolysaccharide(LPS) and CCl4 .Beginning with 8th week ,the positive group(LGT ,10 mg/kg) ,water extract group(TT ,1 .0 g/kg) ,water soluble group(TTW ,0 .4 g/kg) ,high polarity group(TT20 ,0 .4 g/kg) and medium polarity group(TT50 ,0 .4 g/kg) rats were intragas‐tric administrated drug daily ,the normal group control and model control group rats were given with saline(n=8) .During the next 5 weeks treatment process ,the 24 h urine volume ,24 h urine protein concentration ,and quantity of erythrocyte in urine were observed .The levels of TP ,ALP ,ALT ,AST ,Scr and BUN in serum were determined .The expression of IgA deposition was measured by immunofluorescence staining ,and the pathological changes of kidney tissue were assayed after the therapy process .Results After 5 weeks therapy ,the 24 h urine protein concentration ,the quantity of erythrocyte in urine ,and the level of Scr and BUN of TT and TT50 groups were significantly lower than model control .The fluorescence intensities in the me‐sangial area were weaker than model control .Also ,the degrees of renal capsule expansion and mesangial matrix proliferations , and the kidney tubules damage of TT and TT50 groups were weaker than those of model control .Conclusion The water extract and its medium polarity fraction of Thesium chinensis Turcz show good therapeutic effects on IgAN rats .

The typical manifestations of primary aldosteronism (PA) are hypertension with or without hypokalemia, high aldosterone, and low renal level. However, PA with normal blood pressure is rare in clinical practice. This article reported the diagnosis and treatment of a patient with subclinical PA, admitted for "adrenal accidental tumor" with normal blood pressure and serum potassium. We summarized and analyzed the clinical characteristics and treatment strategies, in order to provide some reference for clinicians.

Objective To investigate the application value of dual-layer spectral computed tomography(DLCT)45 keV single energy image in follow up after transcatheter arterial chemoembolization(TACE)for hepatocellular carcinoma(HCC).Methods The DLCT images of 60 patients with HCC after TACE treatment were analyzed retrospectively.The CT value and standard deviation(SD)value of the lesion region of interest(ROI)and surrounding normal liver parenchyma on two kinds of images with 45 keV energy spectrum CT and 120 kVp conventional CT were measured respectively,then the contrast-to-noise ratio(CNR)between the lesions and surrounding normal liver parenchyma was calculated,and their differences were compared.The image quality of the two kinds of images was scored subjectively with the 3-point method,and the patients were divided into different groups according to the enhance-ment degree and tumor staining.The receiver operating characteristic(ROC)curve was also drawn.Results(1)There was no signif-icant difference in CNR between arterial phase,portal phase,and delayed phase of 120 kVp conventional CT(Hc=1.128,P>0.05).The CNR of 45 keV energy spectrum CT was higher than that of 120 kVp conventional CT,with a statistically significant difference(Z=5.060,P<0.05).(2)The subjective score of 45 keV energy spectrum CT was higher than that of 120 kVp conventional CT,and the difference was statistically significant(Z=5.335,P<0.05).ROC curve analysis showed that 45 keV energy spectrum CT had a larger area under the curve(AUC)than 120 kVp conventional CT,and the difference was statistically significant(Z=4.136,P<0.001).Conclusion 45 keV energy spectrum CT image can significantly improve the CNR between tumor and normal liver parenchyma,and it has the better image quality and higher diagnostic efficiency.