阵发性房颤患者血浆D-Dimer、Fg和FDP水平测定及其意义

目的 观察阵发性房颤患者血浆中D -二聚体纤维蛋白原及纤维蛋白降解产物水平变化 ,并探讨其临床意义。 方法 阵发性房颤组患者22例 ,对照组14例 ,均抽取肘静脉血检测血浆D二聚体、纤维蛋白原、纤维蛋白降解产物的水平。 结果 阵发性房颤组患者血浆D二聚体水平 (251.4±62.3)ng/ml明显高于对照组(205.1±49.2)ng/ml(t=2.349,P<0.05) ;而纤维蛋白原、纤维蛋白降解产物水平 (268.1±50.2)mg/dl、(3.01±1.12)mg/L与对照组 (242.7±42.8)mg/L、(2.55±1.24)mg/L相比无明显变化 (t=1.813、1.153 ,P>0.05)。 结论提示阵发性房颤患者可能存在血栓前状态 ,必要时应给予抗凝治疗。     

李学铭教授从脾胃论治慢性肾炎

介绍国家级名中医李学铭教授从脾胃论治慢性肾炎的经验与特色。脾为后天之本,居中属土,运化一身之水谷精微,与慢性肾炎的发生关系密切,若脾失健运,则运化失司,水液内停,气机失常,出现纳呆、便溏、浮肿、尿浊等,临证当顾护脾胃。文章阐述脾胃学说在慢性肾炎发生中扮演的作用,从健脾利水、补脾益肺、温补脾肾、健脾和胃等方面,针对不同证型,分别提出相应的治则治法。并指出,临床切不可拘泥于一方一法,务必审证求因,辨证论治。     

偏头痛相关血管活性药物实验筛选

目的偏头痛与血流异常相关,探讨偏头痛相关血管活性药物对血流速度的影响。方法采用脉冲多普勒血流计对肾上腺素组、去甲肾上腺素组、多巴胺(DA)组、溶媒组、正常组大鼠颈总动脉血流速度动态监测,评价血管活性药物对颈总动脉血流速度变化指数(BFVCI)的影响。结果肾上腺素、去甲肾上腺素、多巴胺均使血流速度下降。结论血流异常可能是偏头痛发病机制之一。     

新加沙参麦冬煎剂抑制肿瘤转移及其作用机制的实验研究

目的 探讨新加沙参麦冬煎剂防治肿瘤转移的机制。方法结合动物模型、免疫组化、细胞分子生物学技术，观察新加沙参麦冬煎剂对荷瘤小鼠抑瘤率、转移抑制率、生命延长率的影响，检测实验小鼠皮下移植瘤血管内等细胞生长因子（VEGF）、血管内皮细胞第Ⅷ因子（CD34）、黏附因子（CD44V6）、基质金属蛋白酶2（MMP2）、基质金属蛋白酶抑制酶（TIMP2）的表达情况。结果新加沙参麦冬煎剂治疗组的瘤重抑制率、肺转移抑制率、生命延长率分别为37.3%，58.3% 和20.8%；皮下移植瘤CD44V6 、VEGF表达、微血管密度（MVD）明显低于空白组（P＜0.01），TIMP2表达记分明显高出其他组（P＜0.01）。小鼠肺转移灶数与VEGF 、CD44V6、MVD呈线性相关，相关系数分别为0.490，0.398，0.455。结论①新加沙参麦冬煎剂对小鼠LA795高转移肺腺癌模型有较好抑制转移、抑制肿瘤生长和延长荷瘤小鼠生存时间的作用。②新加沙参麦冬煎剂可通过调控肿瘤转移过程中黏附、基质降解、血管生成相关分子的表达，多途径、多靶点防治肿瘤的转移。     

Fabrication and characterization of bioactive and antibacterial composites for dental applications

There is an increasing clinical need to design novel dental materials that combine regenerative and antibacterial properties. In this work the characterization of a recently developed sol–gel-derived bioactive glass ceramic containing silver ions (Ag-BG) is presented. The microstructural characteristics, ion release profile, zeta potential value and changes in weight loss and pH value as a function of the immersion time of Ag-BG in Tris buffer are evaluated. Ag-BG is also incorporated into natural extracellular matrix (ECM) hydrogel to further enhance its regenerative properties. Then, the micro and macro architectures of these new composites (ECM/Ag-BG) are characterized. In addition, the antibacterial properties of these new composites are tested against Escherichia coli and Enterococcus faecalis, a bacterium commonly implicated in the pathogenesis of dental pulp infections. Cell–material interaction is also monitored in a primary culture of dental pulp cells. Our study highlights the benefits of the successful incorporation of Ag in the bioactive glass, resulting in a stable antibacterial material with long-lasting bactericidal activity. Furthermore, this work presents for the first time the fabrication of new Ag-doped composite materials, with inductive pulp-cell proliferation and antibacterial properties (ECM/Ag-BG). This advanced composite made of Ag-BG incorporated into natural ECM possesses improved properties that may facilitate potential applications in tooth regeneration approaches.     

Post-marketing safety surveillance and reevaluation of Motherwort injection: A clinical study of 10 094 cases

OBJECTIVE

To investigate the safety profiles of Motherwort injection (MI).

Cooperative coordination-mediated multi-component self-assembly of “all-in-one” nanospike theranostic nano-platform for MRI-guided synergistic therapy against breast cancer

Carrier-free multi-component self-assembled nano-systems have attracted widespread attention owing to their easy preparation, high drug-loading efficiency, and excellent therapeutic efficacy. Herein, MnAs-ICG nanospike was generated by self-assembly of indocyanine green (ICG), manganese ions (Mn²⁺), and arsenate (AsO₄^3?) based on electrostatic and coordination interactions, effectively integrating the bimodal imaging ability of magnetic resonance imaging (MRI) and fluorescence (FL) imaging-guided synergistic therapy of photothermal/chemo/chemodynamic therapy within an “all-in-one” theranostic nano-platform. The as-prepared MnAs-ICG nanospike had a uniform size, well-defined nanospike morphology, and impressive loading capacities. The MnAs-ICG nanospike exhibited sensitive responsiveness to the acidic tumor microenvironment with morphological transformation and dimensional variability, enabling deep penetration into tumor tissue and on-demand release of functional therapeutic components. In vitro and in vivo results revealed that MnAs-ICG nanospike showed synergistic tumor-killing effect, prolonged blood circulation and increased tumor accumulation compared to their individual components, effectively resulting in synergistic therapy of photothermal/chemo/chemodynamic therapy with excellent anti-tumor effect. Taken together, this new strategy might hold great promise for rationally engineering multifunctional theranostic nano-platforms for breast cancer treatment.     

从血管学说谈偏头痛发病机制的沿革

偏头痛是一种临床常见疾患。目前认为先兆偏头痛与皮层扩散抑制（CSD）相关,而偏头痛与三叉神经血管学说（TVS）相关。血管变化继发于CSD,是三叉神经血管变学说一个重要组成部分。本文从血管学说开始谈谈偏头痛发病机制的沿革。     

胡柚皮黄酮对非酒精性脂肪性肝炎小鼠肝组织SIRT1/PGC-1α通路的影响

目的： 观察胡柚皮黄酮（PTFC）对非酒精性脂肪性肝炎（NASH）小鼠肝组织脂肪变、炎症程度、氧化应激水平及SIRT1,PGC-1α表达的影响,探讨PTFC防治NASH的作用机制。方法： 以高脂饮食喂养16周诱导小鼠NASH模型,于造模第7周起以100,50,25 mg·kg^-1·d^-1的PTFC干预10周,HE染色观察肝组织病理学变化,生化法检测肝组织TG,CHOL含量和血清ALT,AST水平;Real-time PCR法检测肝组织SIRT1,PGC-1α,MnSOD mRNA表达;免疫组织化学法检测肝组织SIRT1, PGC-1α 蛋白及8-OHdG表达;黄嘌呤氧化酶法检测肝组织SOD水平;硫代巴比妥酸法检测肝组织MDA含量。结果： 高脂饮食诱导的NASH模型组小鼠肝组织TG,CHOL水平、NAFLD活动度积分、血清ALT较正常组显著增高（P<0.01）,肝组织SIRT1,PGC-1α,MnSOD mRNA和蛋白表达较正常组显著降低（P<0.01）,肝组织8-OHdG表达和MDA含量较正常组明显增高（P<0.01）;不同剂量PTFC干预后小鼠肝组织的NAFLD活动度积分、TG水平、血清AST较模型组显著降低（P<0.01,P<0.05）,肝组织SIRT1,PGC-1α,MnSOD mRNA和蛋白表达较模型组明显增高（P<0.01,P<0.05）,8-OHdG表达和MDA含量较模型组明显减少（P<0.01）。结论： 高脂饮食诱导小鼠NASH氧化应激/脂质过氧化增强可能与SIRT1/PGC-1α信号转导通路的改变有关;PTFC能通过调节SIRT1/PGC-1α信号通路,增强肝脏抗氧化能力,减少脂肪酸代谢过程中活性氧的损伤,防治NASH的发生发展。