Objective To explore the role of receptor‐interacting protein kinase 3 (RIP3)‐mediated necroptosis in ulcerative colitis (UC ) . Methods The colonic mucosa tissues of eighty‐five patients diagnosed with UC were collected .Disease staging and pathological classification of UC patients were evaluated according to Mayo standard and Truelove standard ,respectively .The expressions of RIP3 and tumor necrosis factor (TNF)‐α were detected by immunohistochemistry .The cell inflammation model in HT‐29 cells was induced by interferon (IFN)‐γ.The expression of RIP3 mRNA and interleukin (IL)‐1βmRNA was determined by real time polymerase chain reaction (RT‐PCR) .Twenty healthy individuals were studied as controls .A single factor analysis of variance was performed in the comparison among groups ,and Pearson correlation analysis was used for correlation analysis .Results Among 85 patients with UC , 27 cases were mild ,30 cases were moderate and 28 cases were severe;for pathological classification ,26 were gradeⅠ ,31 were gradeⅡ and 28 were grade Ⅲ .The Mayo score was positively correlated with pathological grade (r=0 .997 , P<0 .05) .The expression of RIP3 and TNF‐α in colonic mucosa tissues of UC group increased along with the pathological classification grade .The expression of RIP3 of gradeⅠto Ⅲ was 1 .81 ± 0 .98 ,2 .77 ± 1 .26 and 4 .86 ± 2 .77 ,respectively ,and the differences were statistically significant (F=26 .10 ,P<0 .05) .The expression of TNF‐αof gradeⅠto Ⅲ was 1 .35 ± 0 .69 ,2 .61 ± 1 .41 and 4 .43 ± 2 .17 ,respectively ,and the differences were statistically significant (F=31 .80 ,P<0 .05) .The expression of IL‐1β mRNA of IFN‐γ group ,IFN‐γ+ z‐VAD group and IFN‐γ+z‐VAD+ TNF‐αgroup was 0 .68 ± 0 .27 ,1 .47 ± 0 .12 and 1 .86 ± 0 .16 ,respectively ,and the differences were statistically significant (F=38 .45 , P<0 .05) .The expression of RIP3 mRNA of IFN‐γgroup ,IFN‐γ+z‐VAD group and IFN‐γ+z‐VAD+TNF‐αgroup was 0 .46 ± 0 .13 ,1 .21 ± 0 .29 and 2 .06 ± 0 .20 ,respectively , and the differences were statistically significant (F= 55 .15 , P< 0 .05) .Conclusions TNF‐α/RIP3 signal pathway is up‐regulated in UC .RIP3‐mediated necroptosis promotes the death of colonic epithelial cells and exacerbates inflammatory response .RIP3‐mediated necroptosis may be an important mechanism in UC .

Objective To compare the curative effect of transcatheter arterial chemoembolization (TACE) combined with microwave ablation (MWA) with that of simple TACE in treating large liver cancers.Methods A computer-based search assisted by manual searching for TACE+MWA vs simple TACE clinical control trials for large liver cancers was conducted.The patient survival,tumor response and complications were enrolled in the scope of analysis.Results A total of 16 papers met the inclusion criteria,which included 1199 patients in total.Meta-analysis indicated that one-,2-and 3-year survival rates of TACE+MWA group were better than those of simple TACE group,and the differences between the two groups were statistically significant (P＜0.01).The complete response (CR) rate and partial response (PR) rate of TACE+MWA group were higher than those of simple TACE group,and the differences between the two groups were statistically significant (P＜0.01).The stable disease (SD) rate and progressive disease (PD) rate of TACE+MWA group were lower than those of simple TACE group,and the differences between the two groups were statistically significant (P＜0.01).Conclusion For the treatment of large liver cancers,TACE +MWA is superior to simple TACE.(J Intervent Radiol,2017,26:225-231)

ObjectiveTo investigate the strategy and effect of microsurgical treatment for pediatric cerebellar astrocytoma. Methods93 cases of pediatric cerebellar astrocytoma were reviewed who received microsurgical operation. ResultsTotal removal was achieved in 85 cases while subtotal in 8 cases. Pre-operatively, tumor capsule puncture was performed in 21 cases, lateral ventricle puncture and draining in 9 cases and ventricle-peritoneal shunt in 23 cases. Post-operative radiotherapy was performed in 8 cases. They were followed up for 26 months to 5 years with 8 cases lost. There was no death and recurrence. Scores of Karnofsky Performance Status (KPS) was more than 90 in all cases followed up. ConclusionPediatric cerebellar astrocytoma can be treated satisfactorily with microsurgery. By improving surgical removal rate, reasonable peri-operative treatment and early rehabilitation, children with cerebellar astrocytoma can achieve long and excellent living status.

Objective To observe the repairing effect of human umbilical cord mesenchymal stem cells (hUC-MSCs) and goserelin on chemotherapy-induced ovarian injury, and the distribution and growth of hUC-MSCs transplanted in rat chemotherapy-induced ovarian injury. Methods A total of 120 SD rats were randomized into group A-E:A normal group, B NS control group, C goserelin group, D hUC-MSCs group and E hUC-MSCs+goserelin group. The rat premature ovarian failure (POF) model was established by given a loading dose of cyclophosphamide (CTX, 50 mg/kg) followed by daily intraperitoneal injection of CTX (8 mg/kg) for consecutive 14-day. The hUC-MSCs were injected through caudal vein, and goserelin was given by subcutaneous injection 4 days before POF model established. The serum level of estrogen was detected and numbers of follicles were counted. After GFP was transfected by lentivirus, the distribution and growth of stem cells transplanted in rats were observed by animal in vivo imaging system. Results At day 46, the serum level of estrogen showed no significant difference between group A and group E (P > 0.05). There were no significant differences in the counted follicles between group A and group E (P>0.05). After tail vein injection of the transfected cells, GFP positive cells were found in injury ovarian. Conclusion There is a repairing effect of hUC-MSCs and goserelin on ovarian injury.

Objective To investigate the effect of the down regulation of matriptase expression on invasion of human pancreatic cancers cells SW1990.Methods Small interfering RNA targeting at matriptase (Ma-siRNA) was transfected into human pancreatic cancers SW1990 cells,and nonsense siRNA (NC-siRNA) group was used as control.Real time PCR assay and Western blot were used to detect the expression of matriptase mRNA and protein.Transwell assay was used to examine the invasion ability of cancer cells.The enzymatic activity of matriptase and MMP-9 was determined by gelatin zymography assay.Results The expression level of matriptase mRNA in NC-siRNA group,12.5,25,50 nmol/L Ma-siRNA group were 1.000,0.417 ± 0.006,0.233 ± 0.068,0.221 ± 0.092;and the protein expression of matriptase were 0.736 ± 0.066,0.498 ± 0.036,0.341 ± 0.118,0.239 ± 0.050,respectively.The matriptase mRNA and protein expression in Ma-siRNA groups was significantly lower than those in NC-siRNA group,and the difference between the two groups was statistically significant (P ＜ 0.05).The enzymatic activity of matriptase were 1.501 ±0.165,1.211 ±0.265,0.645 ±0.165,0.620 ±0.003,and the enzymatic activity of MMP-9 were 0.929 ± 0.260,0.484 ± 0.364,0.352 ± 0.113,0.346 ± 0.121,and the enzymatic activity of matriptase and MMP-9 in 25,50 nmol/L Ma-siRNA groups was significantly lower than that in NC-siRNA group,and the difference was statistically significant (P ＜ 0.05 or ＜ 0.01).The number of transmembrane cell was (256 ± 1)/per 200 power field,and it was (109 ± 3)/per 200 power field in 25 nmol/L Ma-siRNA group,and the invasion ability of the cells in 25 nmol/L Ma-siRNA group was decreased by (57.4 ± 5.4) ％ when compared with that of control group.Conclusions Down-regulation of matriptase inhibits invasion ability of pancreatic cancer SW1990 cells,and this result may be due to the down regulated enzymatic activity of matriptase and MMP-9.

Water soluble extract (WSE) is an important index for the quality evaluation of Astragali Radix (AR). In this study, the WSE of the wild AR from Shanxi province (SX) and the cultivated AR from Gansu Province (GS) were compared. The WSEs of two types of AR were determined according to the appendix of Chinese pharmacopoeia. Then the WSEs were subjected to NMR analysis, and the obtained data were analyzed using HCA, PCA, OPLS-DA, microarray analysis, and Spearman rank analysis. In addition, the Pearson correlation of differential metabolites were also calculated. The results showed that the WSE content of GS-AR (37.80%) was higher than that of SX-AR (32.13%). The main constituent of WSE was sucrose, and other 18 compounds, including amino acids, organic acids, were also detected. Multivariate analysis revealed that SX-AR contained more choline, succinic acid, citric acid, glutamate, taurine and aspartate, while GS samples contained more sucrose, arginine and fumaric acid. In addition, the Pearson correlations between different metabolites of the two types of AR also showed apparent differences. The results suggested that the WSE of two types of AR differs not only in the content, but also in the chemical compositions. Thus, the cultivation way is important to the quality ofAR. This study supplied a new method for the comparison of extract of herbal drugs.

Objective To investigate the clinical features, therapeutic strategy and prognosis of pediatric benign cerebellar astrocytomas (BCAs). Methods 101 children with BCAs diagnosed histopathologically were analyzed retrospectively and followed up. Results There were 50 boys and 51 girls with a median age of 9.8 years old. The sizes of tumors were 3～7.5 cm. 46 cases were with solid-tumor, 24 with the tumor in the cyst, 31 with the cysty in the tumor. 39 cases were located in cerebellum vermis, 58 cases were in the cerebellar hemisphere and 9 cases were adhesive with brain stem located in the forth ventricle. 92 cases were total removed and 9 cases were subtotal removed. 87 patients were followed up for 1～5 years, and all of them has survived, without radiotherapy or chemotherapy. Conclusion Pediatric benign cerebellar astrocytomas mostly grows in cerebellar hemisphere， also in vermis frequently. Neuroimaging and pathology may conduce to the diagnosis. Microsurgical resection may result in optimal outcome.

Objective To dynamically observe stenosis and wall thickness of carotid artery with endothelium injury in mouse using 7T micro-MR imaging in vivo. Methods A mouse model of carotid artery intimal injury was established by removing endothelium with a flexible wire. The lumen diameter, lumen area, wall thickness and wall area of the injured arteries were observed, and serial MR scanning was performed in different time points after operation. Results The injured arteries and perivascular parenchyma were clearly observed by MR imaging. Before and 1, 5, 10 and 15 days after artery injury, the lumen diameter were (0.57±0.07)mm,(0.41±0.19)mm, (0.44±0.10)mm, (0.43±0.10)mm and (0.47±0.11)mm respectively, and the lumen area were (0.30±0.06)mm2, (0.18±0.11)mm2, (0.18±0.06)mm2, (0.18±0.06)mm2 and (0.22±0.07)mm2. The thickness of artery wall was(0.23±0.12)mm, and the area of artery wall was (0.35±0.24)mm2 15days after artery injury. Conclusions Stenosis and wall thickening of carotid artery after the artery intimal injury of mouse can be dynamically observed on MR imaging in vivo.

Objective A suspected strain of Brucella canis isolated in Hebei Province in 2015 was identified and its genetic characteristics were analyzed.Methods After conventional identification of the bacteria strain,multiplex polymerase chain reaction (M-PCR) and multiple-locus variable-number tandem-repeat analysis (MLVA) were conducted to determine its species and genetic characteristics.Results The strain was identified as Brucella canis by conventional subtyping and M-PCR.Using Panel 1,the strain was genotype 3,using Panel 2A,the strain was genotype 28.It was closely clustered with Brucella canis,and differences of repeated numbers at variablenumber tandem-repeat (VNTR) loci Bruce04,Bruce07,Bruce09 and Bruce16 were also displayed.Conclusions The conventional subtyping and molecular methods can improve the stability and accuracy of the identification.Genetic characteristics of the strain is closely related to that of Brucella canis.

Objective To study the baseline level of fraction anisotropy (FA) and the normal value of apparent diffusion coefficient (ADC) in deep white matter of preterm and its application.Methods From Oct.2010 to Dec.2013,in Department of Neonatology,Jiangsu Province Hospital,magnetic resonance imaging (MRI) (T1,T2) and diffusion tensor imaging (DTI) were done on 13 preterm infants of less than 37 weeks of corrected gestational age (CA),42 preterm infants of term-matched age,and 15 term infants.ADC and FA were measured in genu and splenium of corpus callosum (CC),anterior limb and posterior limb of internal capsule (IC).Results 1.The ADC values in genu,splenium,anterior limb of right IC,posterior limb of right IC,anterior limb of left IC,posterior limb of left IC in CA ＜ 37 weeks infants were higher than those in term-matched infants and in term infants.The ADC values in the 6 regions in term-matched infants and in term infants were significantly different with those in CA ＜ 37 weeks infant(F =5.559,5.775,21.948,19.462,30.586,15.452,all P ＜ 0.01).The differences of ADC values between CA ＜ 37 weeks infants and term-matched infants,between CA ＜37 weeks infants and term infants were significant(all P ＜0.05),except that in CC between CA ＜ 37 weeks infants and term-matched infants.2 The FA values in genu,splenium,anterior limb of right IC,posterior limb of right IC,anterior limb of left IC,posterior limb of left IC in CA ＜ 37 weeks infants were lower than those in term-matched infants and in term infants.The FA values in the 6 regions in term-matched infants and in term infants were significantly different from those in CA ＜ 37 weeks infants (F =9.835,7.500,4.811,11.430,8.674,12.666,all P ＜ 0.01).The differences of FA values between CA ＜ 37 weeks infants and term-matched infants (P ＜ 0.05),between CA ＜ 37 weeks infants and term infants were significant (all P ＜ 0.05).Conclusions The baseline values of FA and ADC in different deep white matters were obtained.As corrected gestational age of preterm babies' increased,FA values in brain white matter increased,while ADC values decreased.The myelination in most white matter of preterm infants at matched term can catch up with that of term infants.The diagnostic value of ADC and FA needs to be studied further.