毛茛有效部位D1对人胃癌细胞MGC803血管生成拟态的作用及其机制

目的以毛茛有效部位D1为研究对象,研究其对人胃癌细胞MGC803血管生成拟态的作用。方法采用细胞粘附实验检测毛茛有效部位D1对人胃癌细胞MGC803粘附作用的影响;采用细胞划痕实验观察D1对MGC803细胞迁移能力的影响;采用Matrigel肿瘤细胞类血管生成模型观察D1对MGC803体外类血管生成的影响;采用半定量RT-PCR方法检测D1对MGC803血管生成拟态相关基因的作用。结果毛茛有效部位D1可有效地抑制人胃癌细胞MGC803细胞粘附、细胞迁移和人胃癌细胞MGC803介导的血管生成拟态并呈剂量依赖性。半定量RT-PCR实验结果显示,D1能明显抑制MGC803血管生成拟态相关基因Sema 4D、VE-Cadherin、MMP2和Integrinβ5的表达。结论毛茛有效部位D1通过抑制血管生成拟态相关基因Sema 4D、VE-Cadher-in、MMP2和Integrinβ5的表达来抑制人胃癌细胞MGC803细胞粘附、细胞迁移和血管生成拟态,提示毛茛有效部位D1是一个抗胃癌血管生成拟态的候选药物。     

养正消积胶囊联合XELOX疗法对晚期恶性消化道肿瘤患者T细胞亚群及生活质量的影响

目的:探讨养正消积胶囊联合XELOX疗法对晚期恶性消化道肿瘤(AGC)患者T细胞亚群及生活质量的影响。方法:选取2013年6月至2016年6月济南市市中区人民医院收治的AGC患者100例,依据治疗方法分为XELOX组和联合组,每组50例,XELOX组给予XELOX疗法治疗,联合组在此基础上给予养正消积胶囊治疗。结果:联合组治疗有效率明显高于XELOX组,差异有统计学意义(P<0.05);联合组治疗后CD_3^+、CD_4^+、CD_4^+//CD_8^+水平明显高于XELOX组,差异有统计学意义(P <0.05);联合组骨髄抑制、胃肠等不良反应发生率明显低于XELOX组,差异有统计学意义(P<0. 05);联合组治疗后生活质量量表(QOL)得分和生存率明显高于XELOX组,差异有统计学意义(P<0.05)。结论:养正消积胶囊联合XELOX疗法可有效改善AGC患者免疫功能,减少化疗毒副作用。     

养正消积胶囊在肝癌放疗中的临床观察

目的 观察养正消积胶囊在肝癌放疗中的疗效.方法 将2012年1月～2012年7月行肝癌伽马刀放疗患者33例随机分为观察组（18例）和对照组（15例）.观察组在放疗时服用养正消积胶囊,对照组服用甲氧氯普胺（胃复安）,养正消积胶囊1.56 g/次,3次/d,口服;对照组：胃复安5mg/次,3次/d,口服.3周为1个疗程.结果 观察组有效率为83.3％（15/18）,对照组有效率73.3％（12/15）.差异无统计学意义（P＞0.05）;观察组不良反应发生率为5.5％,对照组为20.0％.观察组不良反应发生率低于对照组,差异有统计学意义（P＜0.05）.结论 养正消积胶囊在治疗肝癌放疗中改善胃肠不适症状中,副反应少,优于胃复安,并有辅助抗肿瘤作用.     

肿瘤血管生成和抗肿瘤血管生成的治疗策略

近年来对肿瘤血管生成的机理调控、肿瘤血管生成形态和功能特点及临床应用的研究均已取得了很大进展，对肿瘤生物学行为的认识及肿瘤治疗有着重要的临床意义,肿瘤血管生成-是指肿瘤细胞诱导的毛细血管生长以及肿瘤中血液循环建立的过程.早在1863年Virchow就注意到了恶性肿瘤血管的异常变化,1945年Algire首先提出了“肿瘤血管生成”（tumor angiogenesis,neovascularization）的概念。     

养正消积胶囊联合厄洛替尼治疗晚期非小细胞肺癌的临床研究

目的评价养正消积胶囊联合盐酸厄洛替尼片治疗晚期非小细胞肺癌的临床疗效。方法选取2015年12月—2017年12月宝鸡市中心医院治疗的90例表皮生长因子受体基因突变阳性的非小细胞肺癌患者作为研究对象,随机将患者分为对照组和治疗组,每组各45例。对照组口服盐酸厄洛替尼片,150 mg/d;治疗组在对照组基础上口服养正消积胶囊,4粒/次,3次/d。两组患者均治疗8周。观察两组患者的临床疗效,同时比较两组的生存情况、肿瘤标志物和不良反应。结果治疗后,对照组和治疗组总缓解率分别为22.22%、24.44%,疾病控制率分别为60.00%、66.67%,两组比较差异无统计学意义。治疗后,两组患者肿瘤无进展生存期(PFS)和总生存期(OS)无显著差异。治疗后,两组糖类抗原19-9(CA19-9)、细胞角蛋-19片段(CYFRA21-1)、癌胚抗原(CEA)水平均显著降低,同组治疗前后比较差异具有统计学意义(P0.05)。且治疗组肿瘤标志物水平明显低于对照组,两组比较差异具有统计学意义(P0.05)。治疗后,治疗组恶心呕吐、皮疹、转氨酶升高例数显著少于对照组,两组比较差异具有统计学意义(P0.05)。结论养正消积胶囊联合盐酸厄洛替尼片治疗晚期非小细胞肺癌具有较好的临床疗效,可有效降低肿瘤标志物水平,减轻不良反应,具有一定的临床推广应用价值。     

钙粘附蛋白E与膀胱肿瘤侵袭和转移的关系

侵袭和转移是恶性肿瘤的特征性改变，也是构成肿瘤患者死亡的重要原因之一。近年研究表明，肿瘤细胞的粘附功能在肿瘤的侵袭和转移起着关键性的作用。近年来，随着多种细胞表面粘附分子的发现，以及对其研究的不断深入，有越     

整合素αvβ3拮抗剂的研究进展

肿瘤生长初期没有新血管生成（无血管期）,其生长到一定程度时依赖新生血管的维持.肿瘤血管生成是肿瘤生长和转移的形态学基础,它不仅向肿瘤提供营养,也向宿主输出大量的肿瘤细胞导致肿瘤的生长和转移.因此对以抑制肿瘤血管生成为目的的抗肿瘤药物的研究方兴未艾,有很多具有抑制肿瘤血管生成作用的化合物如大黄素与青蒿琥酯等被发现.整合素αvβ3介导血管内皮细胞和肿瘤细胞的黏附,参与血管生成和肿瘤转移,在肿瘤生长中起重要作用.当其功能受到抑制时,血管内皮细胞出现凋亡,肿瘤生长受到抑制,甚至肿瘤消退.整合素αvβ3受体拮抗剂作为抗新生血管肿瘤药物的同时,对骨质流失、血栓、风湿性关节炎的治疗也起了重要作用.     

硼替佐米在恶性血液病中的作用机制

硼替佐米作为一种蛋白酶抑制剂,对多发性骨髓瘤细胞表现出抑制细胞生长、诱导肿瘤细胞凋亡、抑制细胞粘附、抑制肿瘤血管生成等作用,同时对血液系统其他恶性肿瘤具有显著的作用。本文就硼替佐米在恶性血液病中的作用机制作一综述。     

现代鲜药抗肿瘤血管生成的研究进展

目的对肿瘤血管生成的机制及现代鲜药抗肿瘤血管生成作用的研究进展进行综述。方法本文以金龙胶囊多年来在肿瘤血管生成方面的实验结果为基础,总结介绍了现代鲜药在肿瘤血管生成方面的研究进展。结果与结论现代鲜药制剂在肿瘤防治中发挥着重要的作用,其抗肿瘤作用机制涉及抑制肿瘤新生血管生成因素。     

养正消积胶囊减轻胃癌术后化疗不良反应的临床观察

目的:观察养正消积胶囊对胃癌术后化疗不良反应的疗效。方法:62例胃癌术后患者随机分为两组,治疗组34例给予常规FOLFOX-4(奥沙利铂+5-氟尿嘧啶+亚叶酸钙)化疗方案加用养正消积胶囊,每次4粒,每日3次;对照组28例单纯应用FOLFOX-4化疗方案。化疗结束后观察两组患者外周血象变化、生存质量及不良反应。结果:与对照组比较,治疗组外周血白细胞、血红蛋白与血小板下降幅度更小,差异有统计学意义(P<0.05);且治疗组KPS生存质量评分较高,不良反应较小(均P<0.05)。结论:养正消积胶囊可减少胃癌术后化疗的不良反应,提高患者生存质量。     

胎盘生长因子与细胞缺氧关系研究进展

胎盘生长因子(PLGF)属于血管内皮生长因子(VEGF)家族成员,丰富表达于正常胎盘,主要由滋养叶细胞分泌,具有促进滋养细胞增殖和介导血管生成等作用.近年,对该因子在低氧条件下促进血管生成、调节滋养细胞功能、加快缺血性疾病进程及促进肿瘤等方面的作用有了新的认识.     

Radiolabeled RGD peptides as integrin alpha(v)beta3-targeted PET tracers

Imaging techniques targeting tumor angiogenesis have been investigated for past decade. Of these, the radiolabeled Arg-Gly- Asp (RGD) peptide has been focused because it has high affinity and selectivity for integrin alpha(v)beta3. Integrin alpha(v)beta3 is expressed on the plasma membrane in an active status in which it binds its ligands and transduce signals when exposed activating external stimuli of tumor angiogenesis such as vascular endothelial growth factor (VEGF). Many linear or cyclic RGD peptides were developed for positron emission tomography (PET). In this review, we focused on currently developed RGD peptides as PET probes for non-invasive detection of integrin alpha(v)beta3 expression.     

苦白蹄化学成分及抗肿瘤作用研究进展

苦白蹄来源于药用拟层孔菌Fomitopsis officinalis的干燥子实体,具有抑菌消炎、止咳平喘、祛风除湿、消肿止痛和抗癌的功效。对苦白蹄的化学成分（包括三萜酸类、甾体类、倍半萜类、多糖类）及其提取部位和有效成分对肝癌、乳腺癌、肺癌、胃癌等肿瘤细胞系的抑制作用进行归纳和总结,以期为苦白蹄的深入研究和进一步开发利用提供思路与依据。苦白蹄提取部位和有效成分抗肿瘤具有多成分、多靶点的特点,其作用机制包括抑制肿瘤细胞增殖、诱导其凋亡、抑制肿瘤细胞迁移和侵袭、增强机体免疫及抑制肿瘤血管生成。     

山楂多糖药理作用和提取工艺研究进展

山楂含有黄酮、多糖、有机酸等生物活性物质,对黄酮、有机酸等有效成分研究较多,而对山楂多糖的研究较少。山楂多糖具有抗疲劳、增强免疫力、抗氧化、抗肿瘤以及调血脂等药理作用,其提取方法主要有水提、超声波提取、微波提取。主要综述近年来国内外对山楂多糖的药理作用以及其提取工艺的研究进展,为更好地开发利用山楂这一植物药资源,进而研发相关新药提供依据。     

A concise review of current radiopharmaceuticals in tumor angiogenesis imaging

Angiogenesis is necessary for tumor growth, without which a tumor can not grow beyond a few millimeters in diameter. This review summarizes the current status on the research of peptide Arg-Gly-Asp (RGD) and Arg-Arg-Leu (RRL) as well as its derivatives applied in tumor angiogenesis imaging and targeted therapy with single photon emission tomography (SPECT) and positron emissiontomography (PET). Peptide RGD sequence Arg-Gly-Asp targeted and combined to integrin αvβ3 which has been overexpressed on tumor endothelial cells and many different tumor cellsis a robust site for tumor angiogenesis molecular imaging and targeted therapy. The vari-ous derivatives of RGD were focused on optimizing its biological characteristics including affinity, targeting efficacy and pharmacokinetics. The other alternative novel tumor angiogenesis molecular imaging agent is RRL peptide which targeted to tumor derived endothelial cells and then applied to visualize tumor angiogenesis with enhanced ultrasonic imaging, optical imaging and SPECT in animal. These novel peptide agents can have promising applications for tumor angiogenesis imaging and antiangiogenic tumor therapy.     

姜黄素抗肿瘤作用机制的研究进展

多种恶性肿瘤细胞中表达细胞凋亡抑制蛋白（IAPs）,如：Survivin、NAIP、XIAP、Livin等,同样表达抗细胞凋亡Bcl-2家族蛋白。IAPS介导的凋亡抑制可能是肿瘤细胞耐药而存活的原因之一;Bcl-2家族蛋白在抗肿瘤凋亡及促其凋亡中发挥作用。姜黄素具有抗炎、抗氧化、抑制血管新生等,可以通过调控蛋白表达及相关信号通路促进细胞凋亡、抗肿瘤作用。     

表没食子儿茶素没食子酸酯抗肿瘤作用机制的研究进展

绿茶中的活性成分已经被证明具有预防和控制癌症的作用,其中表没食子儿茶素没食子酸酯（EGCG）抗癌活性最高。EGCG能够通过调控氧化应激、阻滞肿瘤细胞周期、抑制肿瘤血管形成、诱导肿瘤细胞凋亡等途径实现抗肿瘤效果。因此对EGCG抗肿瘤作用机制的进行了综述,以期为EGCG的临床应用提供参考。     

Suppression of pro-inflammatory and proliferative pathways by diferuloylmethane (curcumin) and its analogues dibenzoylmethane, dibenzoylpropane, and dibenzylideneacetone: role of Michael acceptors and Michael donors

Curcumin, a diferuloylmethane, has been shown to exhibit anti-inflammatory and anti-proliferative activities. Whereas curcumin has both a Michael acceptor and a Michael donor units, its analogues dibenzoylmethane (DBM, a component of licorice) and dibenzoylpropane (DBP) have a Michael donor but not a Michael acceptor unit, and the analogue dibenzylideneacetone (DBA) has a Michael acceptor unit. In the current report, we investigated the potency of DBM, DBP, and DBA in relation to curcumin for their ability to suppress TNF-induced NF-κB activation, NF-κB-regulated gene products, and cell proliferation. We found that all four agents were active in suppressing NF-κB activation; curcumin was most active and DBM was least active. When examined for its ability to inhibit the direct DNA binding activity of p65, a subunit of NF-κB, only DBP inhibited the binding. For inhibition of TNF-induced IKK activation, DBA was most active. For suppression of TNF-induced expression of NF-κB-regulated gene products such as COX-2 (inflammation marker), cyclin D1 (proliferation marker), and VEGF (angiogenesis marker), DBA and curcumin were more active than DBM. Similarly for suppression of proliferation of leukemia (KBM-5), T cell leukemia (Jurkat), prostate (DU145), and breast (MDA-MB-231) cancer cells, curcumin and DBA were most active and DBP was least active. Overall, our results indicate that although curcumin and its analogues exhibit activities to suppress inflammatory pathways and cellular proliferation, a lack of Michael acceptor units in DBM and DBP can reduce their activities.     

多西他赛抑制小鼠肺癌血管生成分析

目的探讨常用化疗药物多西他赛化疗抑制肿瘤血管生成的作用。方法选择Lewis肺癌细胞荷瘤小鼠50只,随机分成多西他赛不同剂量治疗3组、生理盐水组和对照组,观察4周后5组最终肿瘤体积、质量以及移植瘤血管生成抑制情况。结果多西他赛组小鼠皮下移植瘤质量与体积明显小于其他组,其微血管数（MVD）亦明显低于其他组。结论多西他赛能明显抑制小鼠肺癌血管生成。     

Effect of proton beam on blood vessel formation in early developing zebrafish (<Emphasis Type="Italic">Danio rerio</Emphasis>) embryos

Proton beam therapy can kill tumor cells while saving normal cells because of its specific energy delivery properties and so is used to various tumor patients. However, the effect of proton beam on angiogenesis in the development of blood vessels has not been determined. Here we used the zebrafish model to determine in vivo whether proton beam inhibits angiogenesis. Flk-1-GFP transgenic embryos irradiated with protons (35 MeV, spread out Bragg peak, SOBP) demonstrated a marked inhibition of embryonic growth and an altered fluorescent blood vessel development in the trunk region. When cells were stained with acridine orange to evaluate DNA damage, the number of green fluorescent cell death spots was increased in trunk regions of irradiated embryos compared to non-irradiated control embryos. Proton beam also significantly increased the cell death rate in human umbilical vein endothelial cells (HUVEC), but pretreatment with N-acetyl cystein (NAC), an antioxidant, reduced the proton-induced cell death rate (p<0.01). Moreover, pretreatment with NAC abrogated the inhibition of trunk vessel development and prevented the trunk malformation caused by proton irradiation. In conclusion, proton irradiation significantly inhibited in vivo vascular development possibly due to increased vascular cell death via reactive oxygen species formation.