Objective To compare the levels of S100+ DC,CD83 + DC and IL-23P19 between the patients with mucosa of ulcerative colitis ( UC ) and those with irritable bowel syndrome ( 0BS ).Methods Paraffin-embedded colon tissue from colonoscopic biopsy was detected in sixty UC and sixty IBS cases for the positivity of SI00 + DC,CD83 + DC and IL-23P19 using immunohistochemical SP method.Results There was no significant difference in the positive rates of S100 + DC and CD83 + DC between the two groups ( P ＞ 0.05 ),while significant difference in IL-23P19 level was found between the two groups( 85.0％ vs.70.0％ ; x2 =3.87,P ＜0.05 ).The infiltration densities of S100 + DC,CD83 + DC and expression of IL-23 P19 in the mild and severe UC patients were 24.43 ± 8.26/mm2,5.23 ± 1.66/mm2,95.03 ± 18.39/mm2,and 36.13 ± 11.36/mm2,10.13 ±3.29/mm2,133.38 ± 25.32/mm2,respectively.The difference between the mild and severe UC patients was significant ( P ＜ 0.05 ).No significant difference was found regarding the above three parameters between severity-stratified subgroups of the UC patients ( P ＞ 0.05 ).Conclusion In UC colon tissues,the infiltration density and activity of DC were increased.IL-23P19 level was elevated.The levels of S100 + DC,CD83 + DC and IL-23P19 were increased with the advancement of UC disease.

Automatic Data Processing ; Computer-Aided Design ; Cone-Beam Computed Tomography ; Expert Systems ; Humans ; Imaging, Three-Dimensional ; Orthodontics, Corrective ; Robotics ; Surgery, Computer-Assisted

OBJECTIVETo explore the effects of cyclopamine on the proliferation and apoptosis of LNCaP cells and the expression of the PCA3 gene in human prostate cancer in vitro.

METHODSLNCaP cells were treated with cyclopamine at the concentrations of 1, 5, 10 and 15 micromol/L for 24, 48 and 72 hours. The inhibitory effects of cyclopamine on the proliferation and apoptosis of the LNCaP cells were detected by MTT and flow cytometry respectively, the morphological changes of the cells observed by Hoechst 33258 staining, and the expression of the PCA3 gene determined by real-time fluorescence quantitative reverse transcriptase polymerase chain reaction (FQ-RT-PCR).

RESULTSCompared with the blank control group, cyclopamine significantly inhibited the proliferation of the LNCaP cells at 5, 10 and 15 micromol/L (P <0.01), reaching IC50 at 10 micro mol/L at 48 hours. The apoptosis rates of the LNCaP cells at 24, 48 and 72 hours were 37.21%, 57.38% and 57.98% in the 10 micromol/L group and 21. 16% , 71.31% and 72.90% in the 15 micro.mol/L group, significantly different from those in the control (P <0. 01). The cell apoptosis showed a rising trend with the increase of cyclopamine concentration and acting-time, while the expression of the PCA3 gene was decreasing with the increased concentration of cyclopamine, significantly lower than that of the blank control group (P <0.01) , and extremely low in the 10 micromo/L group

CONCLUSIONCyclopamine intervention at 10 and 15 micromol/L for 48 and 72 hours could significantly inhibit the at all time points. Proliferation and induce the apoptosis of LNCaP cells and reduce the expression level of PCA3.

Antigens, Neoplasm ; genetics ; Apoptosis ; drug effects ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Humans ; Male ; Prostatic Neoplasms ; genetics ; pathology ; Veratrum Alkaloids ; pharmacology

Objective To investigate the clinical efficacy of atorvastafin intensive treatment before percutaneous coronary intervention (PCI) in patients with acute coronary syndrome (ACS) and its affects on serum interleukin (IL)-6 and IL-8.Methods Sixty ACS patients were divided into observation group and control group according to different treatment with 30 cases each.Control group received conventional therapy,while observation group was added with atorvastafin intensive treatment before PCI on the basis of conventional therapy.The serum IL-6 and IL-8 levels were detected before PCI at 24 h,3 d and 6 months after surgery,and the occurrence of cardiac adverse events were observed within 30 days after surgery.Results The serum IL-6 and IL-8 levels between observation group and control group had no statistical differences before surgery (P＞ 0.05).The serum IL-6 and IL-8 levels of observation group were significantly lower than those of control group at 24 h,3 d and 6 months after surgery,respeclively [ IL-6:( 11.56 ± 4.95 )ng/L vs.(20.24 ± 8.67) ng/L,(8.51 ± 3.65) ng/L vs.( 18.83 ± 8.07 ) ng/L,(5.60 ± 2.40) ng/L vs.( 10.02 ±4.29) ng/L;IL-8:(50.34 ± 21.57) ng/L vs.(74.50 ± 31.93) ng/L,(30.80 ± 13.20) ng/L vs.(53.30 ± 22.84)ng/L,( 26.00 ± 11.14 ) ng/L vs.( 40.61 ± 17.40 ) ng/L ] ( P ＜ 0.05 ).There was no cardiac adverse event in observation group within 30 days after surgery.There was 1 case who occurred angina pectoris at 16 days after PCI in control group,and the syrnptoms disappeared after emergency treatment.Conclusions The atorvastatin intensive treatment before PCI can effectively decrease the levels of IL-6 and IL-8 in ACS patients and has the effects of anti-inflammatory and protecting myocardium from damage.

Objective:To observe the clinical effects of acupuncture plus external medicine application for cervical radiculopathy.Methods:A total of 98 patients with cervical radiculopathy were randomly divided into an observation group and a control group based on the random digital table.The observation group (50 cases) was treated by acupuncture plus external medicine application and the control group (48 cases) was treated by acupuncture alone.The patients received the treatment every day.Ten sessions made a course.Cervical spondylosis symptom scale was used to assess the cases before and after the treatment.The clinical efficacy was compared between the two groups after the treatment.Results:The total effective rate was 98.1％ in the observation group versus 87.6％ in the control group with a statistically significant difference between the two groups (P＜0.05).The cure rate was 52.0％ in the observation group versus 18.8％ in the control group with a significant difference between the two groups (P＜0.05).There was no significant difference in the score of cervical spondylosis symptom scale between the two groups before the treatment (P＞0.05).It increased with a significant difference in both groups after the treatment (both P＜0.05),while a significant difference was found in the results between the two groups after the treatment (P＜0.05).Conclusion:Acupuncture plus external medicine application is more effective than acupuncture alone for treating cervical radiculopathy.The method also effectively improves the clinical symptoms.

Objective Classification of non-small cell lung lymph (NSCLC) node (N) is one of the key factors influencing treatment, however, the cilinical noninvasive and invasive approaches to N classification have their limitations.This study aimed to investigate the risk factors of lymph node metastasis of peripheral lungadenocarcinoma by using CT and PET / CT scans.Methods Retrospective analysis had been done on a total of 248 patients who underwent surgical resection from February 2010 to November 2015 in our hospital.All of them underwent chest CT and 80 patients underwent PET/CT examination.Univariate analysis was applied in the relation of lymph node metastasis to gender, age, smoking situation, CEA, SUV, cancer size, pathological variants, and the degree of differentiation.Multivariable logistic regression analysiss were performed in the prediction of risk factors for lymph node metastasis.ResultsSeventy-four patients (29.8%) had regional lymph node metastases.Univariate analysis showed that lymph node metastasis was related to the serum CEA level, degree of differentiation, SUVmax, tumor size, lobulation/spiculation, pleural retraction, mediastinal or hilar lymphadenopathy (P<0.05).In the multivariable analysis of risk factors, including serum CEA, SUVmax and CT features, for predicting lymph node metastasis, the most important and significantly independent risk factors identified were SUVmax, CEA level, mediastinal or hilar lymphadenopathy, cavitation/bubble-likelucency and pleural retraction (P<0.05).Conclusion The lymph node metastasis is associated with SUVmax of primary tumor, serum CEA level, mediastinal or hilar lymphadenopathy, cavitation/bubble-likelucency and pleural retraction.The combination of radiographic features and serum CEA can help to predict more accurately the risk of lymph node metastasis in patients with peripheral lung adenocarcinoma.

BACKGROUND:Researchers have done much work to investigate semantic priming with event-related potentials (ERPs) method. The ERPs component of N400 is of great importance in this research domain. N400 is a negative wave occurs at about 400 ms after the stimulus onset. It has been accepted that N400 represents the processing of semantic information. In many studies, amplitude of N400 could be reduced by semantic priming. Relatively, ERPs studies on phonological priming, especially by auditory stimuli, deserve to be further investigated. OBJECTIVE: To investigate the EPR characteristics of semantic and phonological priming with spoken two-character Chinese words, and also to testify theories about auditory word recognition.DESIGN: Repeated measurement experiment.SETTING: Center for Psychology and Behavior Studies, Tianjin Normal University. PARTICIPANTS: This experiment was carried out between August and October 2003 in Tianjin Normal University. Seventeen healthy college students (8 male and 9 female, age ranging from 19 to 23 years) with no hearing defect were involved in this experiment. All of them were Chinese native speakers. All except one male participant were right handed. Informed consents of detected items were obtained from all the participants.METHODS: In the study, lexical dicision task which required participants was used to judge if the latter words were real words or pseudowords in the auditorily presented word-pairs by pressing buttons. The stimuli materials were 640 two-character word-pairs including semantic related, initial phonological overlap, final phonological overlap, phonological and semantic unrelated and word-pseudoword (control) conditions. These five kinds of word-pairs presented randomly in the experiment. The presentation of stimuli and recording of behavioral data were realized by STIM software. The error rate and mean reaction time (RT) of reaction of subjects were calculated under four experimental conditions. The word-pseudoword items were not included in the analysis (just served as fillers). EEG were recorded referring to linked mastoids with Scan 4.3 software made by Neuroscan company in America. Participants wore the Quick-Cap32 electrode cap (International 10/20 System). EEG data were amplified and acquired with a sampling rate of 500 Hz. Offline exclusion of occular artifacts was done on the acquired continuous EEG data after experiment. Then the EEG data were segmented to epochs of 1 700 ms, each epoch was time-locked to the onset of target stimulus with a 200 ms pre-target baseline. Then the operation of baseline (with a 200ms pre-target baseline), artifact rejection (epochs with amplitude exceeded the range of -100 μV to +100 μV were rejected) and average were realized. MAIN OUTCOME MEASURES: Error rate, reaction time and caused N400 waveform change of target words under different experimental conditions.RESULTS: Data from 17 subjects were involved in the final analysis. The error rate of subjects under semantic related condition was lower (P＜ 0.05) while RT was shorter (P＜ 0.01) than that under phonological and semantic unrelated condition. The error rates of subjects under initial phonological overlap and final phonological over lap conditions were higher than that under phonological and semantic unrelated condition (P ＜ 0.01). The error reactions were discarded and the mean value of RT under 4 conditions (semantic related, initial phonological overlap, final phonological overlap and phonological and semantic unrelated) were 830 ms, 891 ms, 864 ms and 903 ms, respectively. There were significant differences of error rate and RT between semantic related and phonological and semantic unrelated conditions (P ＜ 0.01). Error rate and RT under final phonological overlap condition were significantly different from those under initial phonological overlap and phonological and semantic unrelated conditions (P ＜ 0.01). Since the largest amplitude of N400 occurred at FCZ electrode, FCZ was chosen for analyzing the effects under four different experimental conditions. The LSD multiple comparison showed that amplitude under control condition was significantly higher than that under semantic related condition (P ＜ 0.01). Latency under the control condition was the longest, then decreased gradually according to the sequence of semantic related, final phonological overlap and initial phonological overlap condition. As the results of LSD multiple comparison revealed, initial phonological overlap condition had a tendency of shortened latency, with significant difference when compared with control condition (P ＜ 0.05). Another five electrodes were selected besides FCZ standing for anterior, parietal, posterior, left and right brain area in order to investigate the scalp distribution difference of N400 under different experimental conditions. Two factors repeated measured ANOVA (Analysis of variance) was carried out for amplitude analysis, with different experimental conditions (4 levels) as the first factor and electrode positions (6 levels) as the second factor. The main effect of electrode positions was significant [F(5,80)= 13.376, P =0.000]. Among the chosen electrodes, FCZ had the largest amplitude (-7.946 μV), the second was CZ (-7.285 μV) and the other top-downsequence was FZ (-6.849 μV), PZ (-4.324 μV), T8 (-3.501 μV ) and T7 (-3.484 μV), respectively. Results of LSD multiple comparison revealed that the amplitude of FCZ was higher than all other electrodes but CZ. CONCLUSION: Two-character Chinese words presented auditorily in lexical decision task. Semantic relationship can facilitate the recognition of target words, which is shown by lower error rate, shorter RT and decreased amplitude of N400 component. Phonological congruence between prime and target words has both facilitory and interferential effects on target words, which is shown by increased error rate, shorter RT and the tendency of decreasing N400 amplitude.Interferential effect of initial phonological overlap between prime and target words is stronger than that of final phonological overlap. This finding provides evidence for initial phonological information's special function during auditory word recognition which is supported by Cohort Theory. No evidence for the existence of separate intracranial sources of semantic priming and phonological priming has been found. However, Cohort Theory should be revised while applying to the recognition of two-character words of Chinese.

Objective To investigate the effects of different fine particulate matter (PM2.5) components (water-soluble, organic, water-soluble+organic) in vivo on the NOS/NO system in the endothelial cells from rat thoracic aortas. Methods Three PM2.5 components were used to inject by vein in rat tail. ELISA and immunohistochemical technique were used to examine the change of NOS/NO system in the blood-serum and the endothelial cells from rat thoracic aorta. Results Compared with control group, three PM2.5 components increased NO level of rat blood-serum [control, (38.00±5.40) μmol/L; water-soluble group, (44.66±16.59) μmol/L, t =3.58, P< 0.05; organic groups, (58.28±12.30) μmol/L, t =12.85, P <0.01; mixtural component group, (84.02+19.24) μmol/L, t =31.39, P<0.01]; increased iNOS level of rat blood-serum [control, (17.47±5.33) U/ml; water-soluble group, (21.87±4.63) U/ml, t =4.92, P <0.05; organic groups, (25.27±6.58) U/ml, t = 6.22, P<0.05; Mixtural component group, (32.79±5.86) U/ml, t =32.84, P <0.01]. Mixtural component decreased eNOS level of rat blood-serum [(12.58±4.59) pg/ml vs (17.47±2.97) pg/ml, t =5.91, P <0.05], no significant difference on eNOS level of blood-serum among other component groups (P >0.05). Three components decreased the expression of eNOS protein in the endothelial cells from rat thoracic aorta(control, 164.68±4.80; water-soluble group, 185.43±5.63, t =4.26, P <0.05; organic groups, 194.07±9.77, t =5.26, P <0.05; Mixtural component group, 209.24±15.43, t =43.19, P <0.01), increased the expression of iNOS protein (control, 160.17±5.79; water-soluble group, 134.78±8.22, t =5.21, P <0.05; organic groups, 134.78±8.22, t =5.98, P <0.05; Mixtural component group, 81.62 ±10.59, t =34.98, P <0.01) in the endothelial cells from rat thoracic aortas.Conclusion Three components of PM2.5 induced the dysfunction of endothelial cells and disorder of NOS/NO system in the endothelial cells.

Objective:To construct K-ras-targeted siRNAs (K-ras siRNA) and to investigate the inhibitory effects of K-ras siRNAs on the growth and migration of lung cancer A549 cells (containing mutant K-ras gene) and NCI-H446 cells (containing wild-type K-ras gene). Methods: Four K-ras siRNAs (K-ras siRNA1～K-ras siRNA3 targeting wild-type K-ras and K-ras siRNA4 targeting mutant K-ras) were designed and artificially synthesized; they were used to transfect A549 cells and NCI-H446 cells. The expressions of Ras mRNA and protein were examined by RT-PCR and Western blot-ting. The inhibitory effects of K-ras siRNAs on the proliferations of A549 and NCI-H446 cells were determined by MTT assay. The effects of K-ras siRNAs on the cell migration and apoptosis were observed by Transwell assay and Hoechst 33258 staining, respectively. Results: Mutant K-ras-targeted siRNA (K-ras siRNA4) specifically inhibited the K-ras ex-pression but had no influence on H-ras and N-ras expression in A549 cells. K-ras siRNA4 inhibited the proliferation of A549 cells but did not inhibit that of NCI-H446 cells, which contained wild type K-ras gene. K-ras siRNA4 also induced apoptosis and inhibited migration of A549 cells. Conclusion: Mutant K-ras-targeted siRNA4 can inhibit the proliferation, migration and induce apoptosis of A549 cells. It may be a potential and personalized drug for the treatment against lung cancer containing mutant K-ras gene.

Objective To establish a method for detecting K-rag gene point mutation in pancreatic adenocarcinoma based on the pyrosequencing and to compare its performance with that of Sanger sequencing.Methods Genomic DNA was extracted from formalin-fixed,paraffin-embedded pancreatic tissues including 49 pancreatic adenocarcinoma,10 normal pancreas,11 chronic pancreatitis,18 benign pancreatic tumor,7 insulin carcinoma,9 ampullary carcinoma,7 bile duct carcinoma and 7 duodenum papillary adenocarcinoma tissues.K-rag gene point mutations at codon 12 were analyzed by pyrosequencing and Sanger sequencing,respectively.Results No mutant K-ras gene Wag detected in normal pancreas,chronic pancreatitis,benign pancreatic tumor,insulin carcinoma,ampullary carcinoma,bile duct carcinoma and duodenum papillary adenocarcinoma tissues by either pyrosequencing or Sanger sequencing.K-rag gene point mutation was detection rate in pancreatic adenocarcinoma tissues was 71.4%(35/49)by pyrosequencing and 61.2%(30/49)by Sanger sequencing,respectively.Conclusions Pyrosequencing is more sensitive than Sanger sequencing and is also accurate,rapid and of high throushput in detecting mutant K-ras gene.It may serve as a practical method for fast batch analysis of clinical samples.