COX-2, MMP-7 expression in oral lichen planus and oral squamous cell carcinoma

Objective: To observe cyclooxygenase (COX)-2 expression in normal oral mucosa (NOM), oral lichen planus (OLP) and oral squamous cell carcinoma (OSCC) and explore its significance in the incidence of oral cancer. Methods: The immunohistochemical method and RT-PCR method were applied to detect the expression of COX-2 and MMP-7 in 10 cases with NOM, 33 cases of with OLP and 38 cases with OSCC. Results: The expression of COX-2 mRNA in OSCC tissues (68.4%, 26/38) was significantly higher than in the OLP (24.2%, 8/33) and NOM (0.0%, 0/10) ( P<0.01). The expression of MMP-7 mRNA in OSCC tissues (65.8%, 25/38) was significantly higher than in the OLP (30.3%, 10/33) and NOM (0.0%, 0/10) ( P<0.01). The expression of MMP-7 in OLP was significantly higher than in the NOM ( P<0.05). There was no significant expression of COX-2 protein in NOM, and the positive rate was 42.4% (14/33) and 89.5% (34/38) in OLP and OSCC group, respectively. The COX-2 expression in cancer tissues was significantly higher than in NOM and OLP ( P<0.05). The MMP-7 protein expression in cancer tissues (84.2%, 32/38) was significantly higher than in NOM (10.0%, 1/10) and in OLP (42.4%, 14/33), and the positive rate in OLP was significantly higher than in NOM ( P<0.01). The COX-2 expression was associated with clinical stage ( P<0.05), the MMP-7 expression was associated with clinical stage and lymph node metastasis ( P<0.05). The expressions of COX-2 and MMP-7 mRNA were positively correlated with OSCC. Conclusions: The abnormal expressions of COX-2 and MMP-7 are closely related to the biological behavior of OSCC, the MMP-7 may be induced by COX-2, and further lead to the invasion and metastasis of OSCC.

RNA interference-mediated gene silencing of vascular endothelial growth factor in colon cancer cells

瞄准：由 RNA 干扰(RNAi ) 在结肠癌房间线禁止脉管的内皮生长因素(VEGF ) 的表示。方法：跟随了 E-RNAi 的服务，我们设计了并且构造了二种 shRNA 表示向量瞄准 VEGF 基因，然后 transfected 他们进由 lipofectamineTM 的结肠癌 HT29 房间 2000。VEGF mRNA 的水平被 RT-PCR 并且北弄污调查。VEGF 的蛋白质表示被 immunofluoresence 染色并且西方的弄污观察。结果：我们得到了能高效地在 HT29 房间禁止 VEGF 的表示的二种 VEGF 特定的 shRNA 表示向量。RT-PCR，北弄污， immunofluoresence 染色并且西方的弄污证明为 VEGF 表示的那抑制率分别地直到 42% ， 89% ， 73% 和 82% 。结论：VEGF 的表示能被 RNA 干扰在 HT29 房间禁止。

Action Control of Soccer Robots Based on Simulated Human Intelligence

A multi-modal action control approach is proposed for an autonomous soccer robot when the bottom hardware is unchangeable. Different from existing methods, the proposed control approach defines actions with the principle of ＂perception-planning-action＂ inspired by human intelligence. Character extraction is used to divide the perception input into different modes. Different control modes are built by combining different control methods for the linear velocity and angular velocity. Based on production rules, the motion control is realized by connecting different perceptions to the corresponding control mode. Simulation and real experiments are conducted with the middle-sized robot Frontier-I, and the proposed method is compared with a proportional-integral-derivative （PID） control method to display its feasibility and performance. The results show that the multi-modal action control method can make robots react rapidly in a dynamic environment.

眼局部联合全身综合治疗视频终端综合征的临床疗效

目的:观察眼局部联合全身综合治疗视频终端(VDT)综合征的临床效果。方法:选取2017-08/2018-05在我院眼科就诊的VDT综合征患者62例124眼,随机分为试验组和对照组,各31例62眼。对照组患者给予人工泪液点眼,试验组患者在对照组的基础上进行耳穴压豆及眼周穴位联合全身中医推拿治疗,治疗期间对两组患者均进行健康宣教。两组患者均以治疗2wk为一疗程。所有患者分别于治疗前和治疗后2wk行症状评分及屈光矫正基础下的调节幅度、调节灵敏度、调节反应、集合近点和调节性集合与调节的比值(AC/A)检查,比较治疗前后各参数变化并评价治疗效果。结果:治疗后,两组患者症状评分、调节灵敏度均较治疗前改善,差异均有统计学意义(P<0. 05),试验组患者调节幅度、集合近点也较治疗前改善,差异均有统计学意义(P<0. 05)。结论:眼局部联合全身综合治疗能有效改善VDT综合征患者的调节和集合功能,缓解VDT综合征患者的眼部及全身疲劳症状。

Gene therapy that inhibits NF-κB results in apoptosis of human hepatocarcinoma by recombinant adenovirus

AIM: To investigate whether the recombinant adenovirus induces the TNF-α-mediated apoptosis in vivo.METHODS: Human hepatocarcinoma cell line (HepG2) cells were transfected into BALB/c nude mice, and the tumor growth curve was drawn. We analyzed apoptosis in HepG2 cells by TUNEL, HE staining and electron microscopy.RESULTS: AdIκBαM was expressed stably and eff iciently in HepG2 and could not be degraded by induction of TNF-α. Tumor growth in mice could be reduced remarkably if treated by AdIκBαM plus TNF-α. There was apoptosis of > 70% of cells treated with AdIκBαM plus TNF-α and about 50% of cells treated with AdIκBαM. In contrast, there was few cell apoptosis in HepG2 cells treated with phosphate buffered saline and AdIκBα. HepG2 cells in mice also exhibited a high level of apoptosis after in vivo injection with AdIκBαM. The tumor growth curve indicated the tumor transfected with AdIκBαM could be restrained.CONCLUSION: AdIκBαM gene therapy greatly enhances apoptosis due to inhibition of an NF-κB-mediated antiapoptosis signaling pathway.

Identification of the involvement of LOXL4 in generation of keratocystic odontogenic tumors by RNA-Seq analysis

Keratocystic odontogenic tumors （KCOT） are benign, locally aggressive intraosseous tumors of odontogenic origin. KCOT have a higher stromal microvessel density （MVD） than dentigerous cysts （DC） and normal oral mucosa. To identify genes in the stroma of KCOT involved in tumor development and progression, RNA sequencing （RNA-Seq） was performed using samples from KCOT and primary stromal fibroblasts isolated from gingival tissues. Seven candidate genes that possess a function potentially related to KCOT progression were selected and their expression levels were confirmed by quantitative PCR, immunohistochemistry and enzyme-linked immunosorbent assay. Expression of lysyl oxidase-like 4 （LOXL4）, the only candidate gene that encodes a secreted protein, was enhanced at both the mRNA and protein levels in KCOT stromal tissues and primary KCOT stromal fibroblasts compared to control tissues and primary fibroblasts （P〈0.05）. In vitro, high expression of LOXL4 could enhance proliferation and migration of the human umbilical vein endothelial cells （HUVECs）. There was a significant, positive correlation between LOXL4 protein expression and MVD in stroma of KCOT and control tissues （r=0.882）. These data suggest that abnormal expression of LOXL4 of KCOT may enhance angiogenesis in KCOT, which may help to promote the locally aggressive biological behavior of KCOT.

Effects of different anesthesia depth on the level of plasma cortisol during operation and the score of postoperative MMSE in elderly patients with radical operation for gastric carcinoma

Objective:To observe the effects of different anesthesia depths on the level of plasma cortisol during operation and the score of postoperative MMSE in elderly patients underwent radical gastrectomy.Methods: A total of eighty seven elderly patients undergoing radical gastrectomy were enrolled in this study. Continuous infusion of propofol and remifentanil for anesthesia and maintenance of propofol were divided into two groups: BIS-I (BIS: 45-55) and BIS-II (BIS: 55-65) by adusting the doses of propofol. The data were recorded as following, thewhole dosage of propofol, the time of extubation and the score of VAS. The level of plasma cortisol was finished at the time of incision and tracheal intubation. MMSE scores were recorded on the day before operation and follow-up at 3 and 7 d postoperatively. Record the patient's operation to discharge time, postoperative complications.Results: The concentration of cortisol in BIS-I group was higher than that in BIS-II group. There was no significant difference in extubation time, extubation VAS score and MMSE score after operation.Conclusion:There were no significant differences in the BIS values between 45 and 65 for the elderly patients undergoing upper abdominal surgery, and there were no significant differences in the patients' postoperative stress, wake, extubation, early postoperative pain scores and postoperative cognitive function. BIS values in 45-55 compared to 55-65 patients with low plasma cortisol levels may be associated with better control of stress levels, to maintain the BIS value between 45-55 anesthesia depths is more reasonable.

Constant current electrodeposition preparation of nickel layer and its mechanical properties in ionic liquid

Smooth and compact nickel layers were successfully prepared in the ionic liquid of 1-butyl-3-methylimidazolium tetrafluoroborate(BMIMBF4)by constant current electrodeposition method.The effects of temperature,additive content,current density,and deposition time on the performance of the nickel layers were systematically analyzed.Scanning electron microscopy(SEM)and X-ray diffraction(XRD)were used to analyze the surface morphology and composition of the nickel layers.Meanwhile,the tensile strengths of the nickel layers were tested by universal tensile testing machine.The results show that different process conditions have a great effect on morphology and performance of the electrodeposited nickel layer.The optimization of process parameters is as follows:BMIMBF4 to ethylene glycol(EG)volume ratio of 2:1,deposition temperature of 120℃,and current density of 1.2 mA·cm^(-2).Current density has a greater influence on the tensile strength of the nickel layer,and the maximum value of tensile strength is 1275 MPa.

Approaches to electrodeposit molybdenum from ionic liquid

Molybdenum is a kind of refractory metal and can hardly be deposited in aqueous solution since it is more likely to form molybdenum oxide rather than elementary Mo,but molten salts and ionic liquid become alternative to obtain Mo layer.This paper shows an available process to obtain metallic state molybdenum deposit from ionic liquid.Mo layer was electrodeposited under constant current in ionic liquid 1-Butyl-3-methylimidazolium tetrafluoroborate(BMIMBF_4).Micromorphology of the electrodeposited Mo layer was observed by scanning electron microscope(SEM),energy dispersive spectroscopy(EDS)and X-ray photoelectron spectroscopy(XPS).Results show that elementary Mo layer was electrodeposited under constant current in ionic liquid BMIMBF4.Properties of the Mo layer are affected significantly by additive ethylene glycol(EG),deposition temperature and current density.By parallel tests taking into consideration of different technical factors,optimized process parameters are obtained as volume ratio of 2:1 in BMIMBF4+EG system,deposition temperature of 150℃and current density of 0.75 mA·cm^(-2).

Microstructure and properties of electroformed nickel under different waveform conditions

In order to prepare electroformed nickel with excellent properties,the effect of different waveforms on microstructure and mechanical properties was investigated by optical microscopy(OM),X-ray diffraction(XRD) and tensile test,respectively.The results show that the samples are composed of micron columnar grains with high-density nanoscale coherent twin boundaries which are parallel to the growth plane.The tensile strength and elongation display opposite tendency with the increase in current density when direct current(DC) electroforming was applied.However,under the condition of pulse current(unidirectional,bidirectional) electroforming,the change regulation of tensile strength and elongation is close while cathode(peak,positive peak) current density increases.XRD results show that electroformed nickel layers with high purity are all fcc crystal configuration under different conditions of the current waveform.The nickel layers formed under bidirectional pulse current behave superior global performance with tensile strength of 692.0 MPa and elongation of 27.6 %.

酵母产物对断奶仔猪肠道形态、屏障功能、细胞因子表达和抗氧化系统的影响（英文）

目的:验证添加酵母混合物(酵母培养物、酵母细胞壁水解物和酵母提取物)对断奶仔猪生长性能、腹泻发生率、肠道形态、屏障功能、免疫反应和抗氧化系统的影响。创新点:考察酵母培养物、酵母细胞壁水解物和酵母提取物混合物对断奶仔猪的协同作用。方法:90头21日龄断奶仔猪随机分为3组,分别饲喂基础日粮(对照组),含1.2 g/kg的酵母混合物(YP组)及含20 mg/kg硫酸粘杆菌素日粮(CSE组)14天,比较三组间各项指标差异。结论:结果表明,三组之间平均日采食量、平均日增重和料肉比无显著差异。YP组腹泻发生率显著高于其它两组。对照组十二指肠和空肠的绒毛高度以及十二指肠的隐窝深度显著高于YP组和CSE组。相对于对照组或CSE组,YP组十二指肠和空肠绒毛淋巴细胞数目显著增加,而回肠绒毛内淋巴细胞数目显著降低。相对于对照组,YP组空肠和回肠内白介素-10(IL-10)的分泌增加,YP和CSE也显著影响了仔猪肠道和血清中抗氧化因子;YP和CSE组血清D-乳酸浓度和二胺氧化酶活性都增强;YP组或CSE组肠道occludin和ZO-1 mR NA表达降低。综上所述,酵母混合物添加会增加断奶仔猪腹泻发生率,并对断奶仔猪肠道形态学和屏障功能具有副作用。

降低日粮粗蛋白水平对断奶仔猪营养感受体基因(氨基酸转运载体)表达的影响（英文）

目的:验证日粮中粗蛋白质浓度对断奶仔猪氨基酸转运载体的影响效应。创新点:从营养物质感应体的角度分析采用低氮日粮的可行性,并探索营养限制对营养转运体的影响及它们间的相互作用。方法:十八头初始体重9.57公斤的断奶仔猪被随机分为三组(每组6个重复),分别饲喂含有14%、17%和20%的粗蛋白日粮45天。按照理想蛋白质模型,日粮分别添加赖氨酸、蛋氨酸+半胱氨酸、苏氨酸和色氨酸来满足断奶仔猪的需要,整个试验期自由采食。试验结束后,屠宰仔猪并采集小肠样品。与14%粗蛋白组相比,空肠中ASCT2、4F2hc和ATB0 m RNA表达在17%和20%粗蛋白水平组分别上升23.00%、12.00%、6.00%和48.00%、47.00%、56.00%。结论:结果表明,14%粗蛋白水平组外源添加合成氨基酸并不能促进氨基酸转运载体增加氨基酸的吸收来满足断奶仔猪的生长性能。然而,17%粗蛋白水平组可以减少氮排放到环境中,同时又能满足此阶段断奶仔猪的生长发育。因此,17%粗蛋白水平组对这个阶段断奶仔猪最合适。