Objective To investigate the biological effects of Wnt gene in kidney cancer Caki?2 cells. Methods The Wnt gene was silenced in kidney cancer Caki?2 cells by lentivirus vector. The cell proliferate ability of cells in each group were assayed by CCK?8 kit at different time points. The apoptosis of Caki?2 cells was observed after silencing Wnt gene by transmission electron microscope. The invasion ability of each group cells was tested using Transwell chambers. The genes expression changes of Wnt/β?catenin signaling pathway and apoptosis related gene were determined by realtime PCR. Results Compared with the other two groups,the cell proliferate ability of the cells after silencing Wntgene was suppressed,and the difference was statistically significant(P<0.05). Apoptosis increased significantly in shRNA+Caki?2+Wnt group cells with silencing of Wntgene, and apoptotic body appeared in these cells. In invasive experiment,the number of emigrated cells in shRNA+Caki?2+Wnt group were significantly lower than other groups(P<0.05). The expression of Wnt mRNA,β?catenin mRNA and Bcl?2 mRNA in shRNA+Caki?2+Wnt group cells was lower than other groups(P<0.05). Conclusion Silencing of Wnt gene of kidney cancer Caki?2 cells can affect the proliferation rate of the cells, promote the cell apoptosis,and inhibit the invasion ability,which provide certain theoretical basis for the research and development of new drugs and new therapeutic targets.

OBJECTIVE:To establish the quality standard for Solanum tuberdsm. METHODS:The microscopic characteristics were detected;TLC was used for qualitative identification;moisture,ash,heavy metals and the amount of extract were deter-mined;HPLC was conducted for content determination of oxidized cyanidin:the column was Alltima C18 with mobile phase of ace-tonitrile-0.1% trifluoroacetic acid(80∶20,V/V)at a flow rate of 1.0 ml/min,detection wavelength was 538 nm,column tempera-ture was 30℃. RESULTS:It showed clear microscopic identification map. S. tuberdsm TLC had clear spots and well separated. The water content was 8.5%-11.0%;total ash was 2.0%-2.9%;Pb was lower than 5 ppm and alcohol-soluble extracts was 15.6%-22.3%. The linear range of oxidized cyanidin was 0.043-0.215 μg(r=0.999 8);RSDs of precision,stability and reproduc-ibility tests were lower than 2.0%;recovery was 95.50%-99.65%(RSD=1.35%,n=9). CONCLUSIONS:The established method can be used for the quality control of S. tuberdsm.

Objective To observe the ZEEK thrombus aspiration catheter use on the level of vascular and myocardial perfusion in acute ST-segment elevation myocardial infarction (STEMI) patients,as well as the impact of early prognosis in order to clear the relative best use of ZEEK thrombus aspiration catheter.Methods Eighty-eight acute STEMI patients who underwent percutaneous coronary intervention (PCI),according to the direct use of ZEEK thrombus aspiration catheter or after pre-expansion with small balloon,divided into direct aspiration group 45 cases,and inflation pre-aspiration group 43 cases.All patients underwent stenting,observed the perfusion of the vascular and myocardial levels after stenting,after 1 month,determined N end of B type natriuretic peptide (NT-proBNP) level,observed segmental wall motion score index (WMSI) and left ventricular ejection fractions (LVEF).Results Direct aspiration group was significantly better than inflation pre-aspiration group in the TIMI frames count,rate of TIMI coronary myocardial perfusion grade 2-3 grade and after 2 h ST segment resolution ＞ 50％ rate [(31.3 ± 7.9) frames vs.(42.5 ± 8.5) frames,84.4％(38/45) vs.72.1％(31/43),86.7％(39/45) vs.74.4％(32/43),P＜0.01 or ＜ 0.05].After 1 month,direct aspiration group was significantly lower than inflation pre-aspiration group in the peak of creatine kinase isozyme MB,NT-proBNP and WMSI [(2141.3 ± 306.5)U/L vs.(2734.5 ± 366.1)U/L,(443.2 ± 226.4) ng/L vs.(512.9 ± 281.7) nig/L,1.32 ± 0.16 vs.1.59 ± 0.23,P ＜ 0.05],but there was no significant difference in LVEF between two groups (P ＞ 0.05).Conclusions Repeated aspiration to infarction responsibility lesion segments using ZEEK thrombus aspiration catheter,and direct stenting,which is superior to the thrombus aspiration and stenting placement after single or multiple pre-expansion.

Objective The aim of this study is to evaluate the efficacy and safety of preoperative Computed Tomography (CT)-guided microcoil localization for pulmonary ground-glass opacity.Methods We performed CT-guided Microcoil localization in 30 patients with 32 pure ground glass opacities between December 2012 and September 2013.All 30 patients underwent CT-guided micmcoil localization under local anesthesia with a 21G needle percutaneous lung biopsy.All patients accepted video-assisted thoracic surgery after the localization the same day or the next day.Results We located 32 pure ground glass opacitiesin 30 patients.The mean lesion diameter was 0.94 cm,the average depth from the visceral pleura was 0.71 cm,all leisons were successfully located by microcoil,asymptomatic pneumothorax was observed in seven patients,pulmonary hematoma was observed in two patients,pain was observed in one patient,dislodgement was found in one patient during the operation.None of these cases needed surgical treatment.Pathologic diagnoses of the target leisions were as follows:adenocarcinoma in situ (n =17),adenocarcinoma(n =9),atypical hyperplasia(n =4),inflammation (n =2).After the placement of preoperative CT-guided microcoil localization for pulmonary ground-glass opacity,all the 32 pulmonary pure ground-glass opacities resection success rate was 100％.Conclusion Preoperative CT-guided microcoil localization for pulmonary pure ground-glass opacity is a safe and effective way to improve the accuracy of surgical resection.

ObjectiveSummarize 500 cases of non-small cell lung cancer (NSCLC) that has accepted complete videoassisted thoracoscopic (VATs) lobectomy procedure in People's Hospital of Peking University,to report the mid-term follow-up results,and to evaluate the safety and effectiveness of VATs lobectomy.MethodsBetween September 2006 and September 2011,500 cases of non-small cell lung cancer that has accepted complete thoracoscopic lobectomy in the People's Hospital of Peking University were reviewed (267 male,233 female).Median patient age was 62.3 years.The average maximal diameter of solid tumors was 2.65cm.There are 496 cases of initial treat patients and 4 cases of operation after radiation and chemotherapy.This group consisted of lobectomies of left upper lobe ( n =129),left lower lobe ( n =73 ),right upper lobe ( n =163 ),right middle lobe x( n =47 ),right lower lobe( n =89 ).The operation procedure was complete VATs lobectomy combined with systematic lymph node resection ( at least 3 groups of lymph nodes in the mediastinum area),including 480 cases of purely lobectomy,13 cases of compound lobectomy (pulmonary lobe + pulmonary lobe,or pulmonary lobe + pulmonary segment),3 cases of segmentomy,2 cases of pneumonectomy,1 case of sleeve lobectomy and 1 case of bilateral lobectomy.ResultsAll procedures were carried out smoothly without serious complication,except 1 case of death of an advanced age patient due to multi-organ failure after the operation period.The average surgical duration was 198.1 min,and average blood loss was 214.6ml.There are 5 cases of postoperative hemorrhage,identified as pulmonary artery residual ooze blood,in which 4 cases of bleeding were stopped through re-operation,and 1 case was improved through conservative treatment.The median lymph nodes dissection was 5.7 group and median number of resected lymph nodes was 16.9.The median postoperative chest tube drainage duration was 7.8 day,and median postoperative hospital stay was 10.2 day.There were 45 cases (9.0％) of conversion to open thoracotomy and 87 cases ( 17.4％ ) of slight complications,including 32 cases of cardiac abnormalities,such as continuous arrhythmia,28 cases of air leakage beyond seven days,9 cases of pulmonary infections or atelectasis,6 cases of chylothorax,and 16 cases of other complications.The results of pathology show 363 cases of adenocarcinoma,85 cases of squamous carcinoma,12 cases of adenosquamous carcinoma,28 broncho-alveolar cell carcinoma,6 cases of large cell lung cancer and 6 cases of other lung cancer.The 1-year disease free survival (DFS) was 90.2％ and 1-year overall survival (OS) was 94.3％.The 3-year DFS was 76.4％ and 3-year OS was 81.3％.ConclusionCompletely video-assisted Thoracoscopic lobectomy procedure was a safe and effctive procedure for patients with non-small cell lung cancer.

Objective To observe whether hepatitis B vaccine enhance the treating effect of cyto-kine induced kill(CIK) cells on hepatitis B virus transgenic(HBV-Tg) mice. Methods The HBV-Tg mice were treated with CIK cells by peritoneal injection and hepatitis B vaccine by hypodermic injection. The HBV DNA level were tested by real-time PCR,T lymphocyte subgroup were detected by flow cytometry and the pathological diversify of hepatic tissue were observed by HE staining. Results The HBV DNA loading in peripheral blood of HBV-Tg mice decreased after CIK cells were treated and CD3~+ , CD4~+ and CD8~+ cells increased which were enhanced after CIK cells combined with hepatitis B vaccine. Conclusion Hepa-titis B vaccine enhanced the treating effect of CIK on HBV-Tg mice which may be implemented by increased the blood level of CD3~+, CD4~+ and CD8~+ cells, especially CD8~+ cells level.

This article describes the measure to decrease the emission of a domestic infusion pump which can't pass the radiated emission test when performing EMC tests. Then optimizes the measure and evaluates whether these measures affect the original electrical safety of the pump.
Electricity ; Infusion Pumps ; standards ; Quality Control ; Safety Management

This study is to investigate the inhibitory effect of kaempferol on inflammatory response of lipopolysaccharide(LPS)-stimulated HMC-1 mast cells. The cytotoxicity of kaempferol to HMC-1 mast cells were analyzed by using MTT assay and then the administration concentrations of kaempferol were established. Histamine, IL-6, IL-8, IL-1β and TNF-α were measured using ELISA assay in activated HMC-1 mast cells after incubation with various concentrations of kaempferol (10, 20 and 40 µmol.L-1). Western blot was used to test the protein expression of p-IKKβ, IκBα, p-IκBα and nucleus NF-κB of LPS-induced HMC-1 mast cells after incubation with different concentrations of kaempferol. The optimal concentrations of kaempferol were defined as the range from 5 µmol.L-1 to 40 µmol.L-1. Kaempferol significantly decreased the release of histamine, IL-6, IL-8, IL-1β and TNF-α of activated HMC-1 mast cells (P<0.01). After incubation with kaempferol, the protein expression of p-IKKβ, p-IKBa and nucleus NF-κB (p65) markedly reduced in LPS-stimulated HMC-1 mast cells (P<0.01). Taken together, we concluded that kaempferol markedly inhibit mast cell-mediated inflammatory response. At the same time, kaempferol can inhibit the activation of IKKβ, block the phosphorylation of IκBα, prevent NF-KB entering into the nucleus, and then decrease the release of inflammatory mediators.
Cells, Cultured ; Histamine ; metabolism ; Humans ; I-kappa B Kinase ; metabolism ; I-kappa B Proteins ; metabolism ; Inflammation ; metabolism ; Interleukin-1beta ; metabolism ; Interleukin-6 ; metabolism ; Interleukin-8 ; metabolism ; Kaempferols ; pharmacology ; Lipopolysaccharides ; Mast Cells ; drug effects ; NF-KappaB Inhibitor alpha ; NF-kappa B ; metabolism ; Tumor Necrosis Factor-alpha ; metabolism

Objective To evaluate the etiology and clinical features of jejunoileum bleeding.Methods Seventy-two patients admitted in 7 hospitals of Shangdong province for jejunoileum bleeding from January 1998 to December 2008 were enrolled in the study. There were 46 males and 26 females with mean age of 47 years (ranged 13-85 years). The jejunoileum bleeding was confirmed by means of endoscopy, images or surgery. The causes, diagnostic methods and major clinical manifestations were retrospectively analyzed. Results The most frequent cause of jejunoileum bleeding was tumor (42/72,58.3 %), followed by enteritis (9/72, 12.5 %), diverticulum ( 7/72, 9. 7%), angiopathy (7/72,9.7%), Crohn's disease (3/72,4.2%). Differences were significant in constituent ratio of cause of jejunoileum hemorrhage between male and female and between jejunum and ileum (P＜0.05).Hematochezia or hematochezia with abdominal pain was the first presentation. The jejunoileum bleeding in 54. 2% patients was diagnosed by laparotomy, 23. 6% by capsule endoscopy, 9.7% by selective angiography, 6.9% by small bowel series and enteroclysis, 2.8% by colonoscopy and 2.8% by push enteroscopy. The complications of jejunoileum bleeding were anemia, intestinal obstruction,peritoneal metastasis, shock, ankylenteron and intestinal perforation. Conclusions Intestinal tumor is the most common cause in jejunoileum bleeding, especially in jejunum. Whereas the enteritis,diverticulum and angiopathy were often found in ileum. The capsule endoscopy and push enteroscopy are recommended in diagnosis of jejunoileum bleeding.

Day-old chick is unique animal model in brain development and behavior study. The intermediate medial mesopallium (IMM), a region of the chick forebrain, is intimately involved in the early learning processes, which offers the ideal opportunity to study the neural changes that underlie behavioral plasticity. In this paper, the intracellular recordings were conducted from IMM neurons in chick forebrain slices, in which electrophysiological properties, synaptic responses and long-term potentiation (LTP) were observed. Coronal sections of left forebrains (500 mum thick), containing IMM, were prepared from domestic chicks, aged 2-10 days. In 69 IMM neurons, the resting membrane potential was measured to be (-59.4+/-5.3) mV, slope membrane resistance (70.8+/-27.2) MΩ, and time constant (10.2+/-4.3) ms. The amplitude, threshold, overshoot, half-width, max rise slope and max decay slope of action potential evoked by intracellular current injection were (85.2+/-9.4) mV, (-38.7+/-7.6) mV, (25.6+/-8.9) mV, (2.1+/-0.5) ms, (150.5+/-41.2) mV/ms and (-64.3+/-14.0) mV/ms, respectively. Spike-firing frequency was increased with depolarizing current intensity in 32 of 69 tested cells [linear regression slope was (21.5+/-10.9) Hz/nA, P<0.05 in all cells]. The depolarizing synaptic responses (i.e. EPSPs), with stimulus intensity- and membrane potential-dependent properties, were elicited by dorsal (n=25) or ventral (n=62) focal electrical stimuli at 0.1 Hz in all tested IMM neurons and could be nullified reversibly by perfusion with 100 mumol/L AP5 (NMDA receptor antagonist) and 3 mumol/L DNQX (non-NMDA receptor antagonist), but enlarged by 6 mumol/L bicuculline (GABA(A) receptor antagonist). The EPSPs evoked by ventral stimulation were persistently increased after tetanic stimulation (5 Hz, 300 pulses/train, 2 trains, train interval 10 min) in 6 of 12 tested IMM neurons. The amplitude of EPSPs was potentiated to more than 120% of control level (when analyzed at 45 min of enhancement, P<0.05, n=5), which lasted at least 30 min and then could be referred to as LTP. Moreover, area under curve, duration and max rise slope of EPSPs were also enhanced (P<0.05), while no significant changes were observed in the electrophysiological parameters of IMM neurons following induction of LTP (P>0.05). These results suggest that the intracellular recording techniques in the chick brain slices can be used to perform multi-parameter analysis of synaptic responses and their LTP.
Animals ; Brain ; physiology ; Chickens ; In Vitro Techniques ; Long-Term Potentiation ; Membrane Potentials ; Receptors, N-Methyl-D-Aspartate ; antagonists & inhibitors