凝血酶敏感蛋白2在肿瘤中的研究进展

凝血酶敏感蛋白2（TSP-2）是凝血酶敏感蛋白家族中的一员，是有效的内源性肿瘤微血管生成抑制剂。在体外试验、动物实验及临床肿瘤的研究中，发现TSP-2的表达与肿瘤微血管生成、肿瘤细胞的黏附和侵袭都有密切的关系。现综述TSP-2在肿瘤研究和治疗中的新进展。     

麝香乌龙丸对兔实验骨折BMD、BMC、BMP的作用研究

目的:探讨麝香乌龙丸对兔实验骨折骨密度(BMD)、骨矿物质含量(BMC)、骨形态发生蛋白(BMP)的调节作用。方法:120只日本大耳白兔制成横断骨折模型,随机分为模型对照组、麝香乌龙丸组、骨折挫伤散组,灌胃给药。分别在骨折后1w、2w、3w、4w时每组各抽取10只进行骨痂BMD、BMC、BMP检测。结果:麝香乌龙丸可调节BMD、BMC、BMP的水平,与模型对照组和骨折挫伤散组比较有统计学意义。结论:麝香乌龙丸能促进骨痂的矿化,促进骨源性生长因子的分泌,缩短骨愈合时间,提高骨愈合质量,提示麝香乌龙丸能促进骨折愈合。     

CO2气腹环境对胃癌细胞黏附与侵袭转移的影响

目的 探讨不同压强持续性CO2气腹环境对胃癌细胞黏附与侵袭转移的影响.方法 建立体外CO2气腹模型,选用3种不同分化程度的胃癌细胞株MKN-45(低分化腺癌细胞)、SGC-7901(中分化腺癌细胞)和MKN-28(高分化腺痛细胞),分别在9 mm Hg、15 mm Hg以及常规条件下(0 mm Hg,对照组)作用2 h和4 h后,用RT-PCR法、CytoMatrixTM细胞黏附试剂盒和ECMatrixTM细胞侵袭试剂盒检测黏附分子E钙黏蛋白(E-cadherin)和细胞间黏附分子1(intercellular adhesionmolecule-1,ICAM-1)以及侵袭分子基质金属蛋白酶2(matrix metalloproteinases,MMP-2)和血管内皮生长因子A(vascular endothelial growth factor A,VEGF-A)的表达.将胃癌细胞注入裸鼠腹腔(2×106个细胞/只),每组10只.4周后每组取5只处死,记录腹腔成瘤情况,观察其余裸鼠的生存时间.结果 RT-PCR结果显示3种胃癌细胞株经CO2处理后,随着时程的延长及压强的升高,E-cadherin表达有下降的趋势(MKN-45:2.26→2.19、SGC-7901:2.16→2.09、MKN-28:2.06→1.99),而ICAM-1(MKN-45:2.20→2.28、SGC-7901:2.10→2.18、MKN-28:2.00→2.08)、MMP-2(MKN-45:2.05→2.13、SGC-7901:1.95→2.03、MKN-28:1.85→1.93)和VEGF-A(MKN-45:2.10→2.16、SGC-7901:2.00→2.06、MKN-28:1.90→1.96)则有升高的趋势,但是各实验组之间比较或实验组与对照组之间比较差异均无统计学意义(P>0.05).黏附侵袭实验也得出类似的结果.裸鼠模型显示3种胃癌细胞株在不同CO2气腹环境及对照条件下,腹腔成瘤个数随着时程的延长及压强的升高而增加(MKN-45:22→23、SGC-7901:20→22、MKN-28:21→22),存活天数则减少(MKN-45:23→21、SGC-7901:22→21、MKN-28:22→21),但各组的腹腔成瘤个数和存活时间之间相比差异均尤统计学意义(P>0.05).结论 在不高于15 mm Hg 压强以及不超过4 h的情况下,不同压强与时程的CO2对3种胃癌细胞株的黏附和侵袭能力并无显著影响,且不增加肿瘤的转移风险.     

CO2气腹环境对胃癌细胞黏附与侵袭转移的影响

Objective To investigate the influence of CO2 pneumoperitoneum on the adhesive and invasive ability of gastric cancer cells based on the expression of adhesive and invasive molecules. Methods With an artificial CO2 pneumoperitoneum model in vitro, human gastric cancer cells MKN-45, SGC-7901 and MKN-28 were exposed to 3 different CO2 gradients: 9 mm Hg, 15 mm Hg and control group (0 mm Hg). The expression of E-cadherin, ICAM-1, MMP-2 and VEGF-A were measured at 2 and 4 hours exposure by using RT-PCR, CytoMatrixTM kit and ECMatrixTM kit. The pretreated gastric cancer cells were injected into abdominal cavity of nude mice(2×106 cells per mouse). Five mice in each group were sacrificed 4 weeks later to record the number of tumor nodules in abdominal cavity. The remaining mice were kept for observation of survival time. Results The expression of E-cadherin (MKN-45: from 2.26 to 2.19, SGC-7901 :from 2.16 to 2.09、MKN-28 :from 2.06 to 1.99), ICAM-1 (MKN-45 : from 2.20 to 2.28、SGC-7901: from 2.10 to 2.18、MKN-28: from 2.00 to 2.08), MMP-2 (MKN-45:from 2.05 to 2.13、SGC-7901: from 1.95 to 2.03、MKN-28: from 1.85 to 1.93) and VEGF-A(MKN-45 : from 2.10 to 2.16、SGC-7901 :from 2.00 to 2.06、MKN-28: from 1.90 to 1.96) didn't change significantly with increasing pressure and time (P>0.05). The expression of adhesive and invasive molecules didn't change significantly between the experimental groups and the control group. There was no statistical significance of tumor metastasis in abdominal cavity of nude mice(MKN-45:from 22 to 23、SGC-7901 :from 20 to 22、MKN-28:from 21 to 22) and survival time(MKN-45 :from 23 to 21、SGC-7901 :from 22 to 21、MKN-28 :from 22 to 21) among all the groups. Conclusion Under low pressure and short time of CO2 exposure, the adhesive and invasive capacity of gastric cancer cells did not change significantly hence did not increase the possibility of neoplasm metastasis.     

麝香乌龙丸对兔实验骨折Ca、P、ALP的作用研究

目的:探讨麝香乌龙丸对兔实验骨折血钙(Ca)、磷(P)、碱性磷酸酶(ALP)的调节作用。方法:30只日本大耳白兔制成横断骨折模型,随机分为模型对照组、麝香乌龙丸组、骨折挫伤散组,灌胃给药。分别在骨折后1w、2w、3w、4w时检测Ca、P、ALP。结果:麝香乌龙丸可调节Ca、P、ALP水平,与模型对照组和骨折挫伤散组比较有统计学意义。结论:麝香乌龙丸具有调节骨代谢,刺激成骨细胞增殖,加速骨折愈合的作用。     

实时灰阶超声造影对输卵管阻塞的诊断效果观察

目的探讨实时灰阶超声造影对输卵管阻塞的诊断效果。方法选取2012年5月～2012年12月在惠州市中心人民医院就诊的118例初诊为不孕症的女性患者为观察对象。所有患者均接受实时灰阶超声造影检查和X线输卵管碘剂造影检查,回顾分析患者的临床检查结果。结果实时灰阶超声造影检查对于输卵管通而不畅、输卵管通畅和输卵管阻塞的敏感性分别为38%、94%和92%,准确性分别为84%、94%和90%,特异性分别为94%、96%和86%。两种检查方法的符合率为84%。结论 X线碘剂造影检查与实时灰阶超声造影检查输卵管阻塞,具有较高的一致性,后者的操作方法更加简便、安全性更高,具有更高的临床应用价值。     

咳欣康片治疗支气管炎71例

目的:观察宣肺解表、止咳平喘类中药治疗支气管炎的疗效。方法:采用咳欣康片(麻黄、石膏、黄芩、桔梗、杏仁等)治疗本病71例,并设对照组对比。结果:治疗组总有效率为93.0%,治疗组明显优于对照组(P<0.05)。结论:本方法对本病有宣肺解表,止咳平喘的功效。     

不同压强与时程CO2气腹对胃癌细胞黏附侵袭能力的影响

目的 分析不同压强与时程的CO2气腹对胃癌细胞黏附侵袭能力的影响.方法 建立体外CO2气腹模型,选用3种胃癌细胞株MKN-45、SGC-7901和MKN-28,分别暴露在0 mm Hg(1 mm Hg=0.133 kPa)、9 mm Hg (2 h、4 h)和 15 mm Hg(2 h、4 h)的条件下.RT-PCR法检测胃癌细胞中黏附侵袭分子E-cadherin、细胞间黏附分子-1(ICAM-1)、金属基质蛋白酶-2(MMP-2)和血管内皮生长因子-A(VEGF-A) mRNA在上述条件下的表达水平; 流式细胞仪检测胃癌细胞中E-cadherin和ICAM-1蛋白在0 mm Hg和15 mm Hg(4 h)条件下的表达水平.结果 随着CO2时程延长或压强升高,E-cadherin mRNA的表达水平有下降趋势,而ICAM-1、MMP-2和VEGF-A mRNA的表达水平则有上升趋势; 流式细胞仪检测结果显示E-cadherin蛋白的表达水平有下降趋势,而ICAM-1蛋白的表达水平有升高的趋势.但各种条件下黏附侵袭分子的表达水平比较,差异均无统计学意义(P>0.05).结论 在压强不高于15 mm Hg和时程不超过4 h前提下,不同压强与时程的CO2气腹对胃癌细胞株的黏附侵袭能力无明显影响,并不增加肿瘤的转移几率.     

CO2气腹环境对胃癌细胞黏附与侵袭转移的影响

Objective To investigate the influence of CO2 pneumoperitoneum on the adhesive and invasive ability of gastric cancer cells based on the expression of adhesive and invasive molecules. Methods With an artificial CO2 pneumoperitoneum model in vitro, human gastric cancer cells MKN-45, SGC-7901 and MKN-28 were exposed to 3 different CO2 gradients: 9 mm Hg, 15 mm Hg and control group (0 mm Hg). The expression of E-cadherin, ICAM-1, MMP-2 and VEGF-A were measured at 2 and 4 hours exposure by using RT-PCR, CytoMatrixTM kit and ECMatrixTM kit. The pretreated gastric cancer cells were injected into abdominal cavity of nude mice(2×106 cells per mouse). Five mice in each group were sacrificed 4 weeks later to record the number of tumor nodules in abdominal cavity. The remaining mice were kept for observation of survival time. Results The expression of E-cadherin (MKN-45: from 2.26 to 2.19, SGC-7901 :from 2.16 to 2.09、MKN-28 :from 2.06 to 1.99), ICAM-1 (MKN-45 : from 2.20 to 2.28、SGC-7901: from 2.10 to 2.18、MKN-28: from 2.00 to 2.08), MMP-2 (MKN-45:from 2.05 to 2.13、SGC-7901: from 1.95 to 2.03、MKN-28: from 1.85 to 1.93) and VEGF-A(MKN-45 : from 2.10 to 2.16、SGC-7901 :from 2.00 to 2.06、MKN-28: from 1.90 to 1.96) didn't change significantly with increasing pressure and time (P>0.05). The expression of adhesive and invasive molecules didn't change significantly between the experimental groups and the control group. There was no statistical significance of tumor metastasis in abdominal cavity of nude mice(MKN-45:from 22 to 23、SGC-7901 :from 20 to 22、MKN-28:from 21 to 22) and survival time(MKN-45 :from 23 to 21、SGC-7901 :from 22 to 21、MKN-28 :from 22 to 21) among all the groups. Conclusion Under low pressure and short time of CO2 exposure, the adhesive and invasive capacity of gastric cancer cells did not change significantly hence did not increase the possibility of neoplasm metastasis.     

性激素对类风湿关节炎的影响

人们发现性激素可对免疫应答的多个水平产生影响，性激素水平及其代谢产物的异常所造成的内环境失调是自身免疫反应紊乱的重要因素之一。已知类风湿关节炎（rheumatoid arthritis，RA）是一种以慢性多关节炎症为主要临床表现的全身性自身免疫疾病。本对近十年来有关性激素影响RA发生、发展及其免疫机制的研究进行综述，并对其用于RA治疗提出展望。[第一段]