提高大脑皮质神经元细胞产率以及活性的研究

目的　提高培养大脑皮质神经元的产率以及活性 ,使实验的细胞模型有良好的一致性和可比性。方法　实验分析了大脑皮质神经元培养过程中 ,从选材、取材到分散细胞等一系列步骤中维持细胞活性的内在因素 ,应用细胞形态学指标 ,Trypanblue染色计数分析以及染色观察。结果　每侧大脑皮质得到细胞约 2 .5× 10 6～ 3.0× 10 6个 ,而且种植不同时间 6 ,12 ,48h细胞存活率均在 95 %以上。结论　该法是较好的大脑皮质神经元培养方法。     

高效液相色谱蒸发激光散射检测器分析西洋参中的人参皂甙

目的：采用高效液相色谱蒸发激光散射检测器测定西洋参中人参皂甙的含量。方法：色谱柱为NH2柱,并以乙腈－水－异丙醇（80：20：15）和水作为梯度洗脱流动相,蒸发激光散射检测器。定量方法简单,准确。结果：回收率为95.97%-100.05%,相对标准偏差为0．87％－2．75％。结论：该法可作为西洋参质量控制方法。     

结外淋巴瘤的临床特点及治疗分析(附68例报告)

目的 探讨并评价结外淋巴瘤的临床特点及其治疗效果,为进一步提高临床疗效提供理论依据.方法 回顾性分析2012年1月至2014年3月我院收治的68例结外淋巴瘤患者的临床资料,分析患者的确诊时间、首发症状、发病部位、病理分型、临床分期和生存预后.结果 68例患者出现症状至病理检查确诊时间平均(7.63±1.25)个月.首发症状以胃肠道症状、咽喉和口鼻部症状、局部症状为主.发病部位前3位分别是胃肠道、咽和(或)扁桃体、鼻腔,分别占23.53％(16/68)、20.59％(14/68)、17.65％(12/68).病理分型:免疫分型,B细胞淋巴瘤44例,占64.71％(44/68);T细胞淋巴瘤24例,占35.29％(24/68).临床分期:Ⅰ期20例,占29.41％;Ⅱ期17例,占25.00％;Ⅲ期16例,占23.54％;Ⅳ期15例,占22.06％.68例患者经过治疗后,1年后生存率为79.42％(54/68),3年后生存率为51.47％(35/68).结论 临床对疑似结外淋巴瘤的患者应早期诊断,在诊疗过程中应该重视其临床特点以减少误诊率和漏诊率,应准确定位、分型、分期以尽早确定合理方案进行治疗,以期提高结外淋巴瘤患者的生存率.     

姜黄素对人乳腺癌MCF-7细胞增殖抑制作用及机制研究

目的:探讨姜黄素对人乳腺癌MCF-7细胞增殖抑制、诱导凋亡作用及其分子作用机制。方法:MTT法检测姜黄素对MCF-7细胞的增殖抑制作用;流式细胞术PI单染法检测细胞周期;Annexin V/PI双染法检测细胞凋亡;RT-PCR法检测凋亡相关基因Bcl-2和Bax的mRNA表达水平。结果:姜黄素对MCF-7细胞生长有明显抑制作用,并呈剂量、时间依赖性;FCM结果显示姜黄素能使MCF-7细胞阻滞在G1/S期;Annexin V/PI双染法验证姜黄素可以诱导细胞凋亡;RT-PCR结果显示Bax mRNA水平明显上调,而Bcl-2的mRNA表达水平降低。结论:姜黄素对人乳腺癌MCF-7细胞增殖具有显著的抑制作用并可诱导细胞凋亡,其作用机制可能与其上调Bax基因表达水平的同时,下调Bcl-2基因表达水平,从而诱导细胞凋亡有关。     

可溶性转铁蛋白受体及其复合参数在诊断炎症性肠病合并缺铁性贫血中的临床价值

目的 评估血清可溶性转铁蛋白受体( sTFR)及其复合参数sTFR/LogSF 在炎症性肠病( IBD)合并缺铁性贫血(IDA)中的诊断效能.方法 收集IBD患者161例,其中克罗恩病(CD)81例,溃疡性结肠炎(UC)80例.入院次日清晨空腹抽取静脉血完善血常规、铁代谢、C反应蛋白( CRP)、叶酸及维生素B12(VitB12).根据世界卫生组织(WHO)贫血诊断标准分为贫血组和非贫血组.分析IBD贫血的发生率及病因.根据 SF将 IBD分成缺铁性贫血( IDA)组和非IDA组,利用受试者工作特征曲线( ROC曲线)评估sTFR及sTFR/LogSF在IBD合并IDA中的诊断效能.所有病例随访至研究终点,随访时间≥12个月.结果 IBD合并贫血的发生率62. 1%(100/161),其中IDA 40. 0%(40/100),慢性病性贫血( ACD) 14. 0%( 14/100 ), ACD 与 IDA 混合 26. 0%(26/100),叶酸和VitB12 缺乏10. 0%(10/100). IDA组的血清sTFR浓度和sTFR/LogSF值明显高于非IDA组,差异有统计学意义(U=655. 5、306. 0,P ＜0. 001).血清 sTFR/LogSF的 AUC 值( 0. 937 )大于 sTFR 的 AUC 值( 0. 865 );sTFR/LogSF临界值( 2. 8 )处的特异度( 90. 9%)、敏感度(87. 5%) 高于 sTFR 的临界值( 4. 7 mg/L ) 处特异度(86. 0%)、敏感度(77. 5%). sTFR、sTFR/LogSF 与 CRP 无相关关系(r=0. 042、-0. 958,P＞0. 05).结论 IBD合并贫血发生率高,其中以 IDA 为常见,检测血清 sTFR/LogSF和sTFR可以更准确地诊断IBD合并IDA情况.     

Sodium 4-phenylbutyrate Attenuates High-fat Diet-induced Impaired Spermatogenesis

Objective

To determine the mitigating effects of sodium 4-phenylbutyrate (4-PBA) on high-fat diet (HFD)-induced spermatogenesis dysfunction.

基于网络环境下《预防医学》自主协作学习的行动研究

目的探讨基于网络环境下《预防医学》自主协作学习的行动研究的设计实施过程及其教学效果。方法在临床医学专业本科三年级学生中开展基于网络环境下的《预防医学》自主协作学习教学模式改革。结果通过三轮网络教学行动研究，初步探讨和构建了基于网络环境下《预防医学》自主协作学习模式，并取得了良好的教学效果，学生对教学模式普遍欢迎。结论基于网络环境下《预防医学》自主协作学习的教学模式对当前课程教学改革有很好的参考作用。值得推广。     

Short and long-term outcomes of two drug eluting stents in bifurcation lesions

Background Because no large prospective studies are available, this study evaluated the clinical outcomes of two drug eluting stents in bifurcation lesions. Methods Lesions with diameter of side branch ≥2.5 mm were selected. From October 2003 to June 2005, 112 patients with 113 bifurcation lesions were treated by two drug eluting stents （DESs）, technique. The location of bifurcation lesions were left anterior descending coronary artery/diagonal in 62 patients, left main distal bifurcation in 32, left circumflex coronary artery/obtute marginal branch in 18 and right coronary artery distal bifurcation in 1. Procedures for bifurcation lesions were crush or modified crush technique in 64, ＂T＂ stenting technique in 27, modified ＂Y＂ stenting, kiss stenting, ＂V＂ stenting as well as culotte stenting technique in 11, 5, 3 and 3, respectively. Among 226 lesions, 91 Cypher or Cypher select stents, 74 TAXUS and 67 Firebird were used. Final kiss balloon dilation was performed in 60 （93.7%） with crush technique after stenting. Results Success rate of percutaneous coronary intervention for the bifurcation lesions was 100%. One patient, who developed inhospital acute myocardial infarction due to subacute thrombosis, was successfully treated by a second intervention. Major adverse cardiac events rate in-hospital was 0.89% （1/112） and during followup was 7.14% （8/112）, No death occurred during the followup of all patients. Angiographic followup was effected for 46 patients, restenosis for eight, coronary artery bypass grafting for 1 and a repeat intervention for 5. Restenosis involving TAXUS, Cypher and Firebird was 5 （5/18, 27.8%）, 2 （2/17, 11.8%） and 1 （1/11, 9.1%）, respectively （P〉0.05）. Total restenotic rate was 17.4% （8/46）. Conclusions When ostium of side branch has severe stenosis and 〉12.5 mm in diameter, two-stent strategy in this bifurcation lesion is safe and effective, and the outcomes are satisfactory. Restenotic rates were not different between TAXUS, Cypher and Firebird DESs.     

Comparison of immediate and followup results between transradial and transfemoral approach for percutaneous coronary intervention in true bifurcational lesions

Background  A comparison of efficacy and safety between transradial and transfemoral approach for percutaneous coronary intervention (PCI) in bifurcations has not been done. This study evaluated feasibility of transradial PCI (TRI) and compared the immediate and followup results with transfemoral PCI (TFI) in bifurcations.
Methods  One hundred and thirty-four consecutive patients with bifurcations were treated with PCI in our hospital from April 2004 to October 2005. Of these, there were 60 patients (88 lesions) in TRI group and 74 patients (101 lesions) in TFI group. Bifurcations type was classified according to the Institut Cardiovasculaire Paris Sud Classification.
Results  TRI group had smaller stent diameter ((3.06±0.37) mm vs (3.18±0.35) mm, P=0.023) and postprocedural in-stent minimum lumen diameter ((2.62±0.37) mm vs (2.74±0.41) mm, P=0.029) than TFI, but there were not significant differences in in-stent subacute thrombosis rate (0% vs 1.0%, P=0.349),  target lesion revascularization (TLR) (0% vs 1.0%, P=0.349) following procedure and thrombosis (2.3% vs 1.0%, P=0.482), in-stent restenosis (12.5% vs  10.9%, P=0.731), in-segment restenosis (17.0% vs 14.9%, P=0.681), TLR (10.2% vs 13.9%, P=0.446) and TLR-free cumulative survival rate (89.8% vs 86.1%, P=0.787) at seven months followup. No death was reported in the two groups.
Conclusion  Transradial intervention is feasible and appears to be as effective and safe as transfemoral PCI in treatment of true bifurcational lesions.

     

瘦素及脂联素在子痫前期患者血清中的表达及相关性研究

目的 检测子痫前期患者血清瘦素及脂联素的表达并探讨瘦素与脂联素的相关性.方法 采用酶联免疫吸附法检测44例子痫前期患者及24例正常孕妇血清中瘦素、脂联素的表达水平.结果 ①轻、重度子痫前期组血清瘦素水平明显高于正常对照组,差异分别有显著性和极显著性意义(P＜0.05,P＜0.01);②轻、重度子痫前期组血清脂联素水平明显低于正常对照组,重度组与对照组之间的差异有显著意义(P＜0.05);③重度组中瘦素与脂联素呈低度负相关(r=-0.342;P＜0.05 ).结论 瘦素、脂联素参与了子痫前期的发病.