两种麻醉方法在老年患者髋关节部位手术中应用比较

目的对比腰硬联合麻醉和全身麻醉用于老年患者髋关节部位手术的影响。方法选择髋关节部位手术老年患者40例,随机分成腰硬联合麻醉组和全身麻醉组各20例,观察麻醉前后、手术开始前后、手术中、手术后的血压（收缩压）、动脉血氧分压和心率的变化,以及手术后的患者转归。结果两组均能完成手术,全身麻醉组麻醉前后血流动力学变化、血氧变化大于腰硬联合麻醉组,手术中腰硬联合麻醉组变化大于全身麻醉组,全身麻醉组手术后并发症多于腰硬联合麻醉组。结论全身麻醉有利于手术中血流动力学管理,腰硬联合麻醉有利于手术后患者恢复。     

五味子宁神口服液抗紫外辐射作用研究

目的：研究五味子宁神口服液对3T3细胞紫外辐射损伤的保护作用.方法：建立3T3细胞紫外辐射模型,采用流式细胞术检测高、中、低剂量组（12.5,25.0,50.0 mg·ml-1）五味子宁神口服液作用前后细胞内活性氧浓度的变化,检测胞质匀浆中的超氧化物歧化酶（SOD）、谷胱甘肽过氧化物酶（GSH--Px）和过氧化氢酶（CAT）活性以及丙二醛（MDA）含量变化.结果：与中波紫外线辐射组（UVB组）比较,高、中、低剂量组五味子宁神口服液的活性氧含量和MDA含量显著降低（P＜0.01）,SOD、CAT和GSH-Px活性显著升高（P＜0.01或0.05）.结论：五味子宁神口服液能提高SOD、CAT、GSH-Px等酶活性,降低活性氧和MDA含量,对UVB辐射造成的细胞损伤具有保护作用.     

老年慢性心力衰竭患者血浆肿瘤坏死因子及超敏C反应蛋白检测的临床价值

目的：探讨血浆TNF-α和超敏C反应蛋白（ hs-CRP）在老年慢性心力衰竭（ CHF）患者中的变化及其临床意义。方法选取CHF患者85例作为CHF组,并选取健康体检者85例为健康对照组。所有受试者于清晨取空腹静脉血检查TNF-α及hs-CRP水平,比较两组间血浆TNF-α、hs-CRP水平,观察不同等级CHF患者TNF-α、hs-CRP水平的差异。结果 CHF组患者TNF-α及hs-CRP水平均显著高于健康对照组（ t＝110．86,25．63,均P＜0．05）;随心功能分级的升高,患者TNF-α及hs-CRP水平均逐渐升高,与上一等级相比差异均具有统计学意义（F＝7．65,16．75,均P＜0．05）。通过直线相关分析,患者TNF-α、hs-CRP与LVEF呈显著负相关（r1＝0．78,P＜0．05;r2＝0．71,P＜0．05）。而TNF-α与hs-CRP间存在显著正相关（r＝0．83,P＜0．05）。结论 CHF患者血浆TNF-α和hs-CRP水平升高,并且其水平与心功能进展密切相关。     

调节自噬提高人肝癌Bel-7402/FU细胞株对5-氟尿嘧啶的敏感性

目的：探讨细胞自噬对肝癌Bel-7402／FU细胞5-氟尿嘧啶敏感性的影响。方法：选取Bel-7402、Bel-7402／FU细胞株,分为对照组、5-氟尿嘧啶组、自噬抑制剂3-甲基腺苷组以及5-氟尿嘧啶＋3-甲基腺苷组,MTT法了解抑制细胞自噬对肝癌5-氟尿嘧啶IC50值的影响;流式细胞术检测抑制细胞自噬对细胞凋亡的影响;GFP-LC3质粒转染观察细胞浆中GFP-LC3分布情况。结果：Bel-7402细胞株与Bel-7402／FU细胞株5-氟尿嘧啶IC50值分别为4．66、68．14μg／mL,凋亡率分别为13．809／6、1.09％。3-甲基腺苷联合5-氟尿嘧啶作用后Bel-7402细胞株与Bel-7402／FU细胞株的氟尿嘧啶IC50值分别为4．31、29．44μg／mL,凋亡率分别为13．82％、6．86％。在3-甲基腺苷作用下,Bel-7402／5-FU细胞株5-氟尿嘧啶诱导的点状样GFP-LC3的细胞数量减少。结论：抑制细胞自噬可降低Bel-7402／FU对5-氟尿嘧啶IC50值,诱导细胞凋亡,从而有效地逆转Bel-7402／FU对5-氟尿嘧啶耐药。     

地西他滨治疗骨髓增生异常综合征和急性髓细胞白血病临床观察

目的探讨地西他滨治疗骨髓增生异常综合征（MDS）和急性髓细胞白血病（AML）的临床疗效和安全性。方法收集2011年1月至2013年7月接受地西他滨[15mg／（m2·d）,第1—5天,静脉滴注持续1h以上1单药或联合CAGf阿糖胞苷（Ara-C）、阿克拉霉素（Acla）、粒细胞集落刺激因子（G-CSF）]方案治疗的20例MDS和AML患者的临床资料,评价其疗效和不良反应。结果20例患者中完全缓解（CR）4例,部分缓解（PR）8例,稳定（SD）及进展（PD）8例,总有效率为60．0％（12／20）。其中12例AML患者中CR2例,PR5例,总有效率为58.3％（7／12）,8例MDS患者中CR2例,PR3例,总有效率为62．5％（5／8）。1例MDS．难治性贫血伴环状铁粒幼细胞患者和2例慢性粒一单核细胞性白血病患者输血依赖情况有所改善。14例患者出现Ⅲ－Ⅳ度骨髓受抑,发生率为70．O％（14／20）。总感染率为35．0％（7,20）,其中肺部感染率为20．0％（4／20）,患者经积极抗感染、刺激造血及输血等支持治疗后感染控制。1例患者出现化疗相关死亡。20例患者均未出现严重肝功能损害及出血。结论地西他滨单药或联合CAG方案治疗MDS和AML有一定疗效,可廷缓疾病进展;患者对化疗不良反应均能耐受．且化疗相关病死率低。     

Acute and chronic toxic effects of bisphenol a on Chlorella pyrenoidosa and Scenedesmus obliquus

The acute and chronic toxic effects of Bisphenol A (BPA) on Chlorella pyrenoidosa (C. pyrenoidosa) and Scenedesmus obliquus (S. obliquus) were not well understood. The indoor experiments were carried out to observe and analyze the BPA‐induced changes. Results of the observations showed that in acute tests BPA could significantly inhibit the growth of both algae, whereas chronic exposure hardly displayed similar trend. Superoxide dismutase (SOD) and Catalase (CAT) activities of both algae were promoted in all the treatments. Chlorophyll a synthesis of the two algae exhibited similar inhibitory trend in short‐term treatments, and in chronic tests C. pyrenoidosa hardly resulted in visible influence, whereas in contrast, dose‐dependent inhibitory effects of S. obliquus could be clearly observed. The experimental results indicated that the growth and Chlorophyll a syntheses of S.obliquus were more sensitive in response to BPA than that of C. pyrenoidosa, whereas for SOD andCAT activities, C. pyrenoidosa was more susceptible. This research provides a basic understanding of BPA toxicity to aquatic organisms. © 2012 Wiley Periodicals, Inc. Environ Toxicol 29: 714–722, 2014.     

Proteomics reveals potential non-neuronal cholinergic receptor-effectors in endothelial cells

Aim:

The non-neuronal acetylcholine system (NNAS) in endothelial cells participates in modulating endothelial function, vascular tone, angiogenesis and inflammation, thus plays a critical role in cardiovascular diseases. In this study, we used a proteomic approach to study potential downstream receptor-effectors of NNAS that were involved in regulating cellular function in endothelial cells.

Methods:

Human umbilical vein endothelial cells were incubated in the presence of acetylcholine, oxotremorine, pilocarpine or nicotine at the concentration of 10 μmol/L for 12 h, and the expressed proteins in the cells were separated and identified with two-dimensional electrophoresis (2-DE) and LC-MS. The protein spots with the largest changes were identified by LC-MS. Biowork software was used for database search of the peptide mass fingerprints.

Results:

Over 1200 polypeptides were reproducibly detected in 2-DE with a pH range of 3–10. Acetylcholine, oxotremorine, pilocarpine and nicotine treatment caused 16, 9, 8 and 9 protein spots, respectively, expressed differentially. Four protein spots were identified as destrin, FK506 binding protein 1A (FKBP1A), macrophage migration inhibitory factor (MIF) and profilin-1. Western blotting analyses showed that treatment of the cells with cholinergic agonists significantly decreased the expression of destrin, FKBP1A and MIF, and increased the expression of profilin-1.

Conclusion:

A set of proteins differentially expressed in endothelial cells in response to cholinergic agonists may have important implications for the downstream biological effects of NNAS.     

Changes in Early Serum Metal Ion Levels and Impact on Liver,Kidney, and Immune Markers Following Metal-on-Metal Total Hip Arthroplasty

We retrospectively studied 32 consecutive patients (32 hips) who underwent THA with a Durom large-head, MOM articulation between January 2008 and December 2010. Of the patients who underwent THA using a Trilogy metal on polyethylene prosthesis during the same period, 32 were chosen to form the Trilogy group. 32 volunteers were chosen to form the control group. At the last follow-up, serum metal ion levels, liver and kidney function and host immunologic immune responses were evaluated. The mean Co and Cr levels in the Durom group were 4.33- and 1.95-fold higher than those in the Trilogy group. CD3 +, CD4 + and CD8 + cell levels in the Durom group were significantly decreased. The INF-γ level in the Durom group was significantly higher than that in the Trilogy and control groups.