Gut microbiome diversity mediates the association between right dorsolateral prefrontal cortex and anxiety level

Brain Imaging and Behavior - Despite the fast growing interest in the impact of microbiome–gut–brain interaction on regulating emotional behavior in animals, the underlying mechanisms...     

中西医结合治疗帕金森病非运动症状的系统评价与Meta分析

[目的]系统评价中西医结合治疗帕金森病非运动症状的临床疗效与安全性。[方法]全面检索相关中英文数据库,搜集自建库至2018年7月所有中药联合西医基础治疗与西医基础治疗(和中药安慰剂)的临床随机对照试验,根据纳入标准、排除标准,选择符合标准的相关文献并提取资料,依据Cochrane Handbook对纳入的文献进行质量评价,并采用RevMan5.3软件进行Meta分析。[结果]最终纳入24篇RCT,共计1 836例患者,分别采用主要指标及次要指标进行评价。结果显示:NMSS量表[MD=-6.19,95%CI=(-7.68,-4.69),Chi2=0.83,DF=3,n=302];NMSQuest量表[MD=-2.17,95%CI=(-2.67,-1.68),n=601]UPDRS I量表,未进行Meta分析[Chi2=75.91,DF=10,n=882],UPDRS II量表[MD=-2.71,95%CI=(-3.34,-2.08),n=1164];PDQ-39量表[MD=-7.81,95%CI=(-9.97,-5.64),n=407]。[结论]中西医结合治疗帕金森病非运动症状有效,且优于单纯西医基础治疗。     

中药局部熏蒸治疗偏瘫肩痛的临床疗效观察

[目的]观察中药局部熏蒸治疗及现代康复治疗对偏瘫并发肩痛的临床疗效.[方法]设现代康复训练治疗偏瘫肩痛为对照组(24例),中药局部熏蒸结合康复训练治疗偏瘫肩痛为治疗组(24例),观察2组治疗前后肩关节活动度(ROM)以评价肩关节活动范围的变化,并观察视觉模拟类比评分(VAS)以评定患侧肩关节疼痛状况.[结果]治疗后2组患者ROM积分和VAS评分均有显著改善,与治疗前比较差异均有统计学意义(P＜0.05);且治疗组的改善作用更为显著,与对照组比较差异均有统计学意义(P＜0.05).[结论]中药局部熏蒸治疗结合现代康复手段在偏瘫并发肩痛治疗中可有效缓解患者偏瘫肩痛情况,促进患肩关节功能的恢复,减少偏瘫患者的致残程度,提高中风后偏瘫患者的临床疗效.     

中国部分城市A组轮状病毒感染状况调查及VP7血清型分析

目的 研究我国A组轮状病毒感染状况及VP7血清型分布。方法 利用PAGE电泳检测北京、沈阳、新乡、上海、深圳、广州六个城市1997和（或）1998年秋冬季婴幼儿腹泻A组轮状病毒的感染状况,并采用RT－PCR方法对4种主要的VP7血清型（G1、G2、G3和G4型）进行分型。结果 374份标本中有181份为轮状病毒阳性,检出率48．4％。各地标本的检出率为32％－63％之间,北京、上海地区两年的检出率基本近似。阳性标本经PCR分型方法鉴定G1、G2、G3和G4型的感染率分别为89．5％、6．1％、2．8％和0。有两例为G1和G2型混合感染,另有1例经测序证实为G9型。各地之间、每年之间RV的流行状况略有差异。结论 G1、G2、和G3型是我国A组轮状病毒感染的主要血清型。     

术前认知疗法对子宫次全切除术病人心理健康的影响

近年来，心理干预在国内外得到广泛应用。术前心理干预可降低手术病人的焦虑和抑郁程度。笔者应用认知疗法加常规术前访视对子宫切除术病人进行术前干预，并与单纯进行常规术前访视的病人进行比较。现将结果报告如下。     

Isolation and separation of physicochemically distinct fimbrial types expressed on a single culture of Escherichia coli O7:K1:H6.

The fimbrial (pili) profile of a single strain of Escherichia coli O7:K1:H6 (WF96) was evaluated. Fimbriae were isolated by sucrose density gradient ultracentrifugation, purified from flagellae by the use of 0.4% sodium dodecyl sulfate (SDS), and separated into distinct fimbrial types. Analysis of the purified WF96 fimbriae by SDS-polyacrylamide gel electrophoresis revealed two polypeptide bands with molecular weights of 16,000 and 21,000. Treatment of the fimbrial mixture with saturated guanidine hydrochloride resulted in the appearance of a third band with a molecular weight of 19,500. The relative susceptibilities of the WF96 fimbrial types to disrupting chemicals (octyl-glucoside, urea, SDS, and guanidine hydrochloride) were assessed by exposure of the fimbrial mixture to each agent, separation of the depolymerized fimbriae from intact fimbriae by gel filtration on Sepharose CL-4B, and identification of the disaggregated fimbrial types by SDS-polyacrylamide gel electrophoresis of column fractions. The physicochemical heterogeneity of the three fimbrial types coexpressed on WF96 was exploited to develop a method for separation of individual fimbriae.     

S100B attenuates microglia activation in gliomas: possible role of STAT3 pathway

Despite significant infiltration into tumors, the effector function of macrophages (MPs) and microglia (MG) appears to be suppressed in gliomas. Although STAT3 pathway is thought to play a role in this process, the exact mechanism by which gliomas induce STAT3 activation in MPs and MG is not known. Because activation of receptor for advanced glycation end products (RAGE) can induce STAT3, and because gliomas express high levels of S100B, a RAGE ligand, we hypothesized that MP/MG STAT3 activity may be modulated through S100B-RAGE interaction. Exposure of N9 MG and bone marrow-derived monocytes (BMM) to GL261 glioma condition medium (GCM) and low (nM) levels of S100B increased RAGE expression, induced STAT3 and suppressed MG function in vitro. Furthermore, neutralization of S100B in GCM, partially reversed IL-1β suppression in BMM, suggesting that the inhibitory effect of GCM to be in part due to S100B. Finally, blockage of S100B-RAGE interaction inhibited STAT3 activation in N9 MG and in glioma MG/MP in vivo. These findings suggest that the RAGE pathway may play an important role in STAT3 induction in glioma-associated MG/MPs, and that this process may be mediated through S100B.     

Ultrastructure and chemical analysis of Campylobacter pylori flagella.

Flagella of Campylobacter pylori were analyzed by electron microscopy and purified, and the molecular weight of the flagellin was determined. Isolation of flagella was performed by mechanical shearing from the cell surface, sucrose density gradient centrifugation, and Sepharose CL-4B gel chromatography. The flagella of C. pylori differ from those of other Campylobacter species and of most other bacteria by the presence of a flagellar sheath. The sheath narrows at the end and is linked to a club-shaped terminal structure. The molecular weight of C. pylori flagellin was 51,000.     

脂氧素A4通过p38 MAPK及Nrf2通路调控气道炎症反应

目的：研究脂氧素A4（LXA4）对脂多糖（LPS）诱导的人正常支气管上皮细胞炎症反应的抑制作用及其机制。方法：将对数生长期的BEAS-2B细胞分为3组。对照组：不做任何处理;LPS组：100 ng/mL LPS刺激24 h;LPS+LXA4组：100 nmol/L LXA4预处理30 min,加入100 ng/mL LPS刺激24 h。qPCR法检测IL-6、IL-1β、血红素加氧酶-1（HO-1）、醌氧化还原酶（NQO-1）mRNA表达水平;流式细胞术测定胞内活性氧（ROS）水平;谷胱甘肽（GSH）试剂盒检测GSH水平。为进一步了解LXA4的作用机制,Western blot法检测各处理组p38的磷酸化水平以及Nrf2的核转位及磷酸化水平。结果：与对照组相比,LPS组IL-6、IL-1β mRNA以及胞内ROS表达水平升高（P＜0.05）,HO-1 mRNA水平下降（P＜0.01）,p38磷酸化水平上升（P＜0.01）,胞核中Nrf2相对表达量下降（P＜0.01）,总Nrf2磷酸化水平下降（P＜0.05）。经LXA4干预后,与LPS组相比,除上述改变逆转外（P＜0.05）,NQO-1和GSH水平显著上升（P＜0.05）。结论：LXA4可减轻LPS引起的BEAS-2B细胞炎症反应并促进炎症消退,其机制可能一方面与抑制p38 MAPK通路,减少促炎因子的分泌有关;另一方面与增强Nrf2的核转位以及磷酸化,减轻氧化应激损伤有关。