四君子汤加味治复发性口腔溃疡312例疗效观察

应用四君子汤加味治疗复发性口腔溃疡３１２例。结果治愈２５５例，显效４４例，无效１３例。本组病例从脾胃论治。     

四君子汤加味治复发性口腔溃疡3l2例疗效观察

应用四君子汤加味治疗复发性口腔溃疡３１２例。结果治愈２５５例，显效４４例，无效１３例。本组病例从脾胃论治。     

TGF-β1 promotes differentiation of hiPSC into functional smooth-muscle-like cells

Background Cell source is one of the most important constructions for tissue engineered blood vessels(TEBV). As human adult vascular cells are limited by the replicative life spans and poor collagen secretion, stem cell has become a promising cell source. Hence, we investigated the differentiation of human induced pluripotent stem cells(hiPSC) into functional smooth-muscle-like cells(SMLCs) by embryoid bodies method and explored whether transforming growth factor-β1(TGF-β1) can promote the differentiation. Methods HiPSCs were cultured in smooth muscle cell medium with or without TGF-β1 after forming embryoid bodies. The cell morphology, cell characteristics and contractility were compared after 7 days of differentiation. Real-time PCR and Western blot were used to assess the mRNA and protein expression levels of α-SMA, Calponin, SM22α, Collagen I and Collagen III. Functional contraction study was performed using carbachol. Results HiPSC could successfully differentiate into cells that were similar to typical smooth muscle cells in morphology. The expression of α-SMA, Calponin and SM22α up-regulated after induction. TGF-β1 could further up-regulated α-SMA expression.Immunofluorescence images showed that more than 80% of the hiPSC-derived SMLCs by TGF-β1 stained with smooth muscle cell markers α-SMA, SMMHC, SM22α and Calponin. Analyses of expression in collagen showed that hiPSC-derived SMLCs exhibited higher levels of Collagen I and Collagen III after induction by TGF-β1. Conclusion The hiPSC could successfully differentiate into smooth-muscle-like cells using embryoid bodies method. TGF-β1 can promote the differentiation and enhance collagen synthesis[.S Chin J Cardiol 2019;20(1):44-53]     

CHAPS联合十二烷基硫酸钠的除垢剂动脉脱细胞支架材料制备

目的采用3-[(3-胆酰胺基丙基)二甲基铵基]-1-丙磺酸盐(CHAPS)和十二烷基硫酸钠(sodium do-decyl sulfate,SDS)的联合除垢剂方案对脐动脉进行脱细胞,评价脱细胞的有效性和支架材料的力学性能改变情况。方法分离新鲜脐带获取人脐动脉,通过对脐动脉进行CHAPS联合SDS脱细胞处理,获得脱细胞血管支架,对其进行苏木素-伊红、Masson、Verhoeff′s Van Gieson(EVG)等组织染色和扫描电镜分析,并进行DNA及胶原定量分析;于支架上接种成纤维细胞,通过细胞相容性的程度评估除垢剂残留情况;对血管支架材料进行爆破压力及应力应变曲线分析,评价支架材料力学性能改变。结果组织染色结果显示脱细胞支架材料血管壁细胞消失,与未脱细胞的脐动脉相比较,其胶原纤维和弹力纤维结构无明显差别,电镜下可见血管细胞消失,支架材料成多孔隙结构;DNA定量显示DNA浓度极低,胶原蛋白浓度无明显改变;人成纤维细胞可以很好附着于支架材料上并生长;脱细胞支架材料抗爆破压力及应力应变曲线与脐动脉比较无明显变化。结论 CHAPS联合SDS的脱细胞方法能彻底去除脐动脉血管壁细胞成分,且较为完整地保留了血管的组织结构。脱细胞后的血管支架材料具有良好的生物相容性和力学性能。     

羚羊石膏汤治疗急性化脓性扁桃体炎117例

羚羊石膏汤治疗急性化脓性扁桃体炎１１７例广州市荔湾区妇幼保健院（５１０１４０）刘尚敏急性化脓性扁桃体炎是喉科急症，起病急骤，伴高热持续难退，笔者采用自拟的羚羊石膏汤治疗１１７例，效果满意。现报告如下。１临床资料：本组男６３例，女５４例。年龄最大１８岁...