传统外侧“L”形切口钢板内固定与跗骨窦小切口微型钢板内固定治疗跟骨骨折患者的效果

目的比较传统外侧“L”形切口钢板内固定与跗骨窦小切口微型钢板内固定治疗跟骨骨折患者的效果。方法选取福建医科大学附属三明第一医院2019年1—12月收治的59例跟骨骨折患者,随机分为试验组(31例)和对照组(28例)。对照组采取外侧“L”形切口钢板内固定治疗,试验组采取跗骨窦小切口微型钢板内固定治疗,比较两组的治疗效果。结果试验组手术时间、住院时间均短于对照组,术中出血量少于对照组,差异有统计学意义(P<0.05);两组骨折愈合时间比较,差异无统计学意义(P>0.05)。术后,两组跟骨结节关节角、Gissane角均大于术前,差异有统计学意义(P<0.05);但组间跟骨结节关节角、Gissane角比较,差异无统计学意义(P>0.05)。试验组并发症发生率低于对照组,Maryfand评分、足部功能恢复优良率均高于对照组,差异有统计学意义(P<0.05)。结论跗骨窦小切口微型钢板内固定治疗跟骨骨折患者的效果优于传统外侧“L”形切口钢板内固定,可有效促进患者足部功能恢复,且安全性较高。     

Recombinant Sendai viruses with L1618V mutation in their L polymerase protein establish persistent infection, but not temperature sensitivity

The Sendai virus pi strain (SeVpi) isolated from cells persistently infected with SeV shows mainly two phenotypes: (1) temperature sensitivity and (2) an ability of establishing persistent infection (steady state). Three amino acid substitutions are found in the Lpi protein and are located at aa 1088, 1618, and 1664. Recombinant SeV(Lpi) (rSeV(Lpi)) having all these substitutions is temperature sensitive and is capable of establishing persistent infection (steady state). rSeVs carrying the fragment containing L1618V show both phenotypes. rSeV(L1618V), in which leucine at aa 1618 is replaced with valine, has the ability of establishing persistent infection, but is not a temperature-sensitive mutant, indicating that the ability of a virus to establish persistent infection can be separated from temperature sensitivity. The amino acid change at 1618(L-->V) coexisting with aa 1169 threonine is required for acquirement of a temperature-sensitive phenotype. Three amino acid substitutions are also found in the Ppi protein, but rSeV(Ppi) does not show these phenotypes.     

Lateral Mobility of the Cell Adhesion Molecule L1 Within the Surface Membrane of Morphologically Undifferentiated and Differentiated Neuroblastoma Cells

Lateral mobility and localization in the surface membrane of the adhesion molecule L1 was studied in morphologically undifferentiated and differentiated neuroblastoma cells to gain insight into its possible association with the different molecular forms of N-CAM. In undifferentiated cells, the fraction of mobile L1 molecules is high and similar to that of N-CAM 140. Upon long-term morphological differentiation, the fraction of mobile L1 molecules is reduced by a factor of three and is similar to that of N-CAM 180, the predominant molecular form of N-CAM in differentiated neuroblastoma cells. Comparable to N-CAM 180, L1 is also preferentially accumulated at contact sites between these cells as seen by indirect immunofluorescence. These observations raise the question of whether at least part of the L1 molecules may be directly or indirectly (e.g. via N-CAM 180) linked to the cytoskeleton, thus stabilizing cell contacts between differentiated cells.     

牛至挥发油对小鼠腹腔巨噬细胞活性及免疫器官重量的影响

一定浓度的牛至挥发油(OVLVO)能显著提高Balb/c小鼠腹腔巨噬细胞(Mφ)形成EA和YC花环的能力,显著增强腹腔Mφ的吞噬作用,有明显的增加小鼠脾脏重量的作用,而对胸腺的重量则无显著的影响。表明OVLVO在一定浓度下不引起免疫器官萎缩并能显著提高小鼠腹腔Mφ的活性。提示OVLVO的抗感染作用与增强Mφ的功能有关。     

香青藤的生药鉴定

利用药材性状、显微特征、紫外吸收光谱和薄层层析等鉴别方法对香青藤进行生药鉴定研究 ,为该药材的鉴别和开发利用提供科学依据     

L-Arg-NO通路对大鼠延髓腹面加压区心血管活动的影响及与L-Glu通路的关系

目的：研究一氧化氮（ＮＯ）前体Ｌ－精氨酸（Ｌ－Ａｒｇ）单侧微量注入大鼠延髓腹面加压区（ＶＳＭｐ）对动脉血压（ＡＰ）、心率（ＨＲ）、肾灌流压（ＰＰｋ）的影响及与Ｌ－谷氨酸（Ｌ－Ｇｌｕ）升压作用的关系。方法 采用延髓腹外侧部微量注射法,以整体灌流肾为模型观察与ＮＯ有关药物对心血管活动的影响。结果 （１）ＶＳＭｐ内微量注入Ｌ－Ａｒｇ（４０～１００ｎｍｏｌ）,ＡＰ和ＨＲ呈剂量依赖性下降,与生理盐水注入后的变化相比较,差异均有显著性。如预先注入ＮＯ合酶抑制剂Ｌ－硝基－精氨酸甲酯（Ｌ－ＮＡＭＥ）或鸟苷酸环化酶抑制剂甲基蓝,Ｌ－Ａｒｇ的降压效应被衰减。（２）ＶＳＭｐ内微量注入Ｌ－Ａｒｇ（１００ｎｍｏｌ）,ＰＰｋ与ＡＰ同步下降,与基础值比较,差异有显著性。（３）ＶＳＭｐ内微量注入Ｌ－Ｇｌｕ（３５０ｎｍｏｌ）,ＡＰ上升。如预先注     

L-硝基精氨酸甲酯对实验性葡萄膜炎的影响

目的：观察一氧化氮（ＮＯ）含量含量在葡萄炎房东水及玻璃体中的变化及Ｌ－硝基精氨酸甲酯（Ｎ＾Ｇ－ｎｉｔｒｏ－Ｌ－ａｒｇｉｎｉｎｅ ｍｅｔｈｙｌ ｅａｒｔｅｒ,Ｌ－ＮＡＭＥ）的治疗效果。方法;采用兔眼玻璃２本内注射内毒素脂多糖（ＬＰＳ）制备葡萄膜炎模型,以检测房水蛋白浓度,结果：葡萄为房水及玻璃体及玻璃体中显著增高,即刻使用Ｌ ＮＡＭＥ;显著降低了ＮＯ水平,同时其蛋白浓度、细胞数目及组织炎症程度明显降     

Cerebrospinal fluid as a tool in the diagnosis of neurometabolic diseases: amino acid analysis before and after acid hydrolysis

We perform systematically amino acid analysis of the CSF before and after strong acid hydrolysis in children with unexplained neurological disease. By comparing the amino acid pattern before and after hydrolysis, defects can be traced in the metabolism not only of amino acids but also of purines, peptides, N-acetylated amino acids and peptides, and probably other compounds. This method has yielded important information such as the identification of two new diseases, GABA transaminase deficiency and adenylosuccinase deficiency, and the discovery of a peculiar, acid-labile double peak in the CSF of patients with the transient neonatal hyperammonaemia syndrome and with urea cycle defects. This substance was subsequently identified by others as -glutamylglutamine. As a consequence, we strongly recommend incorporating of this approach in the investigation of all children with unclear neurological disease.     

宽叶缬草对高脂血症家兔血脂代谢的影响

目的：观察宽叶缬草（ValerianaofficinalisLvarlatifoliaMiq,VOL）油调节血脂代谢的作用。方法：用24只健康雄性白兔（体重2.0－2.5kg）造成免疫损伤并以高胆固醇食料喂饲45d,复制高脂血症模型。随机分为4组（每组6只）：（1）高脂对照组（A组）,（2）小剂量VOL组（B组）,（3）大剂量VOL组（C组）,（4）Simvastatin组（D组）。于实验前、实验第45、75、105天分别测定TC、TC、LDL-C、HDL-C、MDA和SOD。结果：（1）VOL油能显著降低TC、TC、LDL-C,升高HDL-C、C组及D组与A组之间比较均有显著性差异（P＜0.05）;C组和D组之间比较无显著性差异（P＞0.05）。（2）VOL油与Simvastatin均能降低MDA,升高SOD（与A组比较P＜0.05）。＃枪：实验提示,VOL油具有显著调节血脂作用及抗脂质过氧化作用。