基于SCI论文和专利数据的单项技术成熟度评估方法

目的：借鉴高德纳Hype Cycle等技术成熟度评估方法,尝试建立基于SCI论文和专利数据的单项技术成熟度评估方法。方法：结合传统X线摄影和光声层析成像技术成熟度的测试,对SCI论文和专利数据分别进行非线性回归分析,拟合为用于研判成熟度的钟形和S形曲线。结果：所获单项技术成熟度评估结果与专家定性评述较一致。结论：单项技术的SCI论文和专利数据,能够实现对单项技术成熟度的初步评估。     

超声辐照载羟基喜树碱微泡对肝癌SMMC-7721 细胞凋亡及相关蛋白表达的影响

Objective To investigate the effects of ultrasound irradiating hydroxycamptothecin (HCPT)-loaded microbubbles on apoptosis in human hepatoma SMMC-7721 cells, and to clarify its probable mechanism. Methods The SMMC-7721 cells were randomly divided into six groups as follows: control group, blank liposome microbubbles plus ultrasound, HCPT-loaded microbubbles, HCPT, HCPT plus ultrasound,and HCPT-loaded microbubbles plus ultrasound. Apoptosis was ascertained by Annexin V-Fire/ PI and TUNEL methods. The expression of Bcl-2 and Bax protein was detected by immunocytochemistry staining technique. Results In the group of HCPT-loaded microbubbles plus ultrasound,the apoptosis rate at early term was found to reach (12.18 ± 1.38)% by Annexin V-Fitc/PI assay, brown-colored positive apoptotic cells were observed and the apoptosis rate at advanced term was found to reach (34.25 ± 1.83)% with TUNEL method. The expression of Bcl-2 was found to decrease,the expression of Bax increase,and the ratio of Bcl-2/bax significantly decrease by immunocytochemistry staining technique in the same group. Differences with other groups were significant. Conclusions The method of ultrasound irradiating HCPT-loaded microbubbles can notability induce human hepatoma SMMC-7721 cells apoptosis. The decrease in the ratio of Bcl-2 to Bax might be responsible for cells apoptosis.     

超声辐照载羟基喜树碱微泡对肝癌SMMC-7721 细胞凋亡及相关蛋白表达的影响

Objective To investigate the effects of ultrasound irradiating hydroxycamptothecin (HCPT)-loaded microbubbles on apoptosis in human hepatoma SMMC-7721 cells, and to clarify its probable mechanism. Methods The SMMC-7721 cells were randomly divided into six groups as follows: control group, blank liposome microbubbles plus ultrasound, HCPT-loaded microbubbles, HCPT, HCPT plus ultrasound,and HCPT-loaded microbubbles plus ultrasound. Apoptosis was ascertained by Annexin V-Fire/ PI and TUNEL methods. The expression of Bcl-2 and Bax protein was detected by immunocytochemistry staining technique. Results In the group of HCPT-loaded microbubbles plus ultrasound,the apoptosis rate at early term was found to reach (12.18 ± 1.38)% by Annexin V-Fitc/PI assay, brown-colored positive apoptotic cells were observed and the apoptosis rate at advanced term was found to reach (34.25 ± 1.83)% with TUNEL method. The expression of Bcl-2 was found to decrease,the expression of Bax increase,and the ratio of Bcl-2/bax significantly decrease by immunocytochemistry staining technique in the same group. Differences with other groups were significant. Conclusions The method of ultrasound irradiating HCPT-loaded microbubbles can notability induce human hepatoma SMMC-7721 cells apoptosis. The decrease in the ratio of Bcl-2 to Bax might be responsible for cells apoptosis.     

超声辐照载羟基喜树碱微泡对肝癌SMMC-7721 细胞凋亡及相关蛋白表达的影响

Objective To investigate the effects of ultrasound irradiating hydroxycamptothecin (HCPT)-loaded microbubbles on apoptosis in human hepatoma SMMC-7721 cells, and to clarify its probable mechanism. Methods The SMMC-7721 cells were randomly divided into six groups as follows: control group, blank liposome microbubbles plus ultrasound, HCPT-loaded microbubbles, HCPT, HCPT plus ultrasound,and HCPT-loaded microbubbles plus ultrasound. Apoptosis was ascertained by Annexin V-Fire/ PI and TUNEL methods. The expression of Bcl-2 and Bax protein was detected by immunocytochemistry staining technique. Results In the group of HCPT-loaded microbubbles plus ultrasound,the apoptosis rate at early term was found to reach (12.18 ± 1.38)% by Annexin V-Fitc/PI assay, brown-colored positive apoptotic cells were observed and the apoptosis rate at advanced term was found to reach (34.25 ± 1.83)% with TUNEL method. The expression of Bcl-2 was found to decrease,the expression of Bax increase,and the ratio of Bcl-2/bax significantly decrease by immunocytochemistry staining technique in the same group. Differences with other groups were significant. Conclusions The method of ultrasound irradiating HCPT-loaded microbubbles can notability induce human hepatoma SMMC-7721 cells apoptosis. The decrease in the ratio of Bcl-2 to Bax might be responsible for cells apoptosis.     

经皮冠状动脉介入围术期抗血小板药物的选择

经皮冠状动脉介入治疗（percutaneous coronary intervention,PCI）围术期抗血小板治疗可明显降低PCI术后心血管事件及病死率。近年大量循证医学证据不断涌现,新的抗血小板药物不断研制开发,但临床如何权衡支架内血栓形成及出血的风险,制定个体化的治疗方案,对降低PCI围术期心脏事件至关重要。本文复习近年相关资料,为临床PCI围术期规范化使用抗血小板药物提供借鉴。     

良性前列腺增生与前列腺癌的磁共振分析

目的：探讨1.5T磁共振在良性前列腺增生（BPH）与前列腺癌（PC）中的诊断价值。材料与方法选取经过病理证实的40例前列腺病变患者,其中BPH27例, PC13例,观察上述前列腺病变的位置、信号特点及组织代谢特征等方面加以分析。结果27例BPH前列腺显示不同程度增大,19例伴增生结节,15例伴慢性前列腺炎。13例PC外围叶内见低信号影, DWI呈明显扩散受限, MRS显示Cho峰显著升高, Cit峰下降或消失。结论1.5T磁共振成像对前列腺病变有一定特征性,多种成像技术综合应用,对BPH及PC的鉴别诊断价值较大。     

CYP19、COMT基因多态性与子宫内膜异位症的相关性

目的:探讨芳香化酶(cytochrome P450 19,CYP19)基因的240A/G位点以及儿茶酚氧位甲基转移酶(catechol-O-methyltransferase,COMT)基因的1947G/A位点的等位基因突变与山东省滨州地区汉族妇女子宫内膜异位症(endometriosis,EMs)发病的相关性。方法:应用高分辨率溶解曲线(high resolution melting,HRM)分析技术对80例EMs患者(EMs组)和40例同期行妇科手术并经术后病理排除EMs的患者(对照组)的CYP19基因240A/G位点以及COMT基因1947G/A位点进行分析,并采用聚合酶链反应-限制性片段长度多态性(polymerase chain reaction-restriction fragment length polymorphism,PCR-RFLP)技术加以佐证。结果:两组均存在CYP19 240A/G和COMT 1947G/A位点的多态性。EMs组CYP19 240A/G各基因型及等位基因分布频率与对照组比较,差异有统计学意义(P<0.05),其中等位基因G突变可使EMs发病风险增加2.809倍,携带AG和GG基因型的妇女EMs发病风险增加了4.529倍。EMs组COMT 1947G/A位点各基因型及等位基因分布频率与对照组比较,差异无统计学意义(P>0.05);携带A等位基因突变的基因型(GA+AA)频率与野生型(GG)比较,差异无统计学意义(P>0.05),携带A等位基因的基因型(GA+AA)并不增加EMs发病风险。结论:滨州地区汉族妇女CYP19基因240A/G等位基因突变增加了EMs的发病风险,COMT基因1947G/A位点多态性与EMs发病风险无相关性。     

癌细胞膜靶向相变纳米分子探针研制及光声/超声双模态显像与光热治疗乳腺癌

目的 制备一种癌细胞膜包被的相变纳米分子探针,观察其体外光声/超声双模态成像效果,并探讨其靶向同源乳腺癌细胞的能力及光热治疗(PTT)杀伤效果.材料与方法通过化学裂解和反复冻融提取乳腺癌4T1细胞膜(CCM),然后以双乳化法联合膜挤压法制备CCM包被的同时携载全氟戊烷(PFP)和Fe3O4的聚乳酸-羟基乙酸共聚物(PL...     

49例发作性运动诱发性运动障碍视频脑电图分析

目的分析发作性运动诱发性运动障碍(PKD)的脑电图特征。方法选择2006年6月-2010年6月在河北省人民医院门诊就诊和住院治疗的49例发作性运动诱发性运动障碍患者,分析发作间歇期和发作期的脑电图特征。结果间歇期脑电图显示,34例发作间歇期未见痫样放电;15例患者记录到尖波、棘慢波;发作期脑电图显示,23例患者记录到临床发作,20例患者发作期未见痫性放电和节律改变,1例患者发作时可见4～6 Hzθ节律夹杂少量低波幅快波;2例患者发作时动作伪差掩盖正常背景;其中有4例患者同时记录到癫痫发作,且癫痫发作时可见明确的痫性放电。结论发作性运动诱发性运动障碍脑电图间歇期可有痫样放电,发作期多数正常,同步行长程视频脑电图检查可帮助鉴别发作性运动诱发性运动障碍和癫痫,为诊断和治疗提供有利依据。     

不同骨质疏松程度下椎弓根螺钉强化固定的生物力学研究

目的 探讨在不同骨质疏松程度下多种脊柱固定方式对脊椎的固定效果.方法 取新鲜猪脊柱16具（共96节椎体）.用随机区组分为Ⅰ,Ⅱ,Ⅲ 3个区组,A,B,C,D 4个处理组.用EDTA-Na2脱钙处理2,3,4周后,A组：单纯行普通椎弓根钉固定;B组：钉道强化后普通椎弓根钉固定;C组：椎体强化后普通椎弓根钉固定;D组：空心椎弓根钉＋骨水泥固定.骨水泥凝固后行最大轴向拔出力和最大旋出力矩测试.结果 最大轴向拔出力和最大旋出力矩Ⅰ,Ⅱ组：B组高于A组;C组及D组高于B组;C组和D组比较差别无统计学意义.Ⅲ组：B,C,D组高于A组,B,C,D组之间差别无统计学意义.结论 椎弓根螺钉强化固定在一般骨质疏松脊柱上的效果明显,而在严重骨质疏松脊柱的效果下降.