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1.
采用化学发光法建立四个活性氧体外模型分析黄鳝粘液、血液、粗多糖清除氧自由基和抑制脂质过氧化作用。结果表明:黄鳝粘液、血液和粗多糖具有清除超氧阴离子自由基(O2·)、羟自由基(·OH)、过氧化氢(H2O2)和抑制脂质过氧化(LPO)作用。清除O2·的IC50分别为5.10±2.68μg/mL、3.62±1.56μg/mL、7.19±1.19μg/mL;清除·OH的IC50分别为5.86±1.54μg/mL、3.36±1.36μg/mL、7.93±0.50μg/mL;清除H2O2的IC50分别为6.91±1.29μg/mL、5.92±0.39μg/mL、8.21±0.61μg/mL;抑制LPO的IC50分别为8.11±0.83μg/mL、6.90±0.51μg/mL、7.62±1.01μg/mL。提示黄鳝血液清除氧自由基作用最明显,粘液次之,最弱为粗多糖。  相似文献   

2.
利用两种不同方法采集间斑寇蛛(Latrodectus tredecimguttatus)毒液并对其进行理化和生物学性质的比较分析。结果显示,粗毒液中的蛋白质成分主要是相对分子质量较大(>104)的酸性蛋白质。与毒囊粗毒液相比,电刺激粗毒液中相对分子质量在105左右的蛋白质含量明显高于毒囊粗毒液中的含量,而两者中相对分子质量较小(<104)的蛋白质与多肽的组成非常相似。电刺激粗毒冻干粉和毒囊粗毒冻干粉对小白鼠的LD50值分别为(0.16±0.03) mg/kg和(0.39±0.05)mg/kg体重;对美洲蜚蠊(Periplaneta Americana)的LD50值分别为1.87 μg/g和2.32 μg/g。在浓度为3.2×10-6g/mL时,电刺激粗毒冻干粉能在(25.0±2.2) min内完全阻断小鼠膈神经-膈肌标本的神经肌肉接头传递;毒囊粗毒冻干粉在浓度为6×10-6g/mL时的完全阻断时间为(23.3±2.2) min;粗毒液中的低相对分子质量(<104)部分在10-4g/mL浓度下对标本的神经肌肉接头传递无明显影响。上述结果表明,间斑寇蛛毒液是一种富含大分子量蛋白质的混合物;哺乳动物神经毒性主要基于其中的大的相对分子质量酸性蛋白质成分,而不是低的相对分子质量的多肽;电刺激粗毒液中的活性成分与毒囊粗毒液中的相似,但含量高于毒囊粗毒液。  相似文献   

3.
目的:观察川芎嗪联合益生菌和柳氮磺胺吡啶对溃疡性结肠炎(Ulcerative Colitis,UC)的临床效果。方法:2013 年8 月至 2014 年8 月在我院接受治疗的UC 患者116 例根据其治疗分为观察组(n=58)和对照组(n=58):对照组予以柳氮磺胺吡啶肠溶片 (1.0 g/次,4 次/d)、益生菌(2~4 粒/ 次,2 次/d)治疗,观察组增用川芎嗪(1~2 片/ 次,3 次/d)治疗,2 周后比较疗效、治疗前后 的炎症因子,以及药物不良反应。结果:观察组患者的总有效率高于对照组(96.55%vs 84.48%,P<0.05);观察组治疗前、后的白细 胞介素-4(Interleukin-4,IL-4; 6.84± 1.23 VS 18.24± 2.56 pg/mL), IL-6 (168.90± 32.49 VS 16.24± 4.23 ng/L);IL-10 (15.17± 3.21 VS 16.77± 2.53 ng/mL);肿瘤坏死因子-alpha(Tumor necrosis factor alpha,TNF-alpha; 6.95± 7.25 VS 6.81± 1.84 ng/L); 与对照组治疗前、 后的IL-4(6.77± 1.52 VS 15.53± 2.75 pg/mL);IL-6 (170.21± 25.68 VS 18.17± 2.25 ng/L);IL-10(15.24± 2.83 VS 15.86± 2.24 ng/mL);TNF-alpha(17.01± 2.53 VS 7.63± 2.27 ng/L)相比差异有统计学意义(P<0.05)。两组间药物不良反应总发生率无统计学意 义(13.79%vs 6.90%,P>0.05)。结论:川芎嗪联合益生菌及柳氮磺胺吡啶三联方案治疗UC 有较好的临床的疗效和安全性。  相似文献   

4.
摘要目的:观察针对性健康教育对老年2 型糖尿病患者的干预效果及对生活质量的影响,为糖尿病的临床护理提供参考。方法: 将120 例老年2 型糖尿病患者随机分为两组,对照组实施常规健康教育,观察组根据患者的文化水平、心理状况、遵医态度、实际 需求实施针对性健康教育,护理3 个月后观察患者餐后2h 血糖(2hPG)、空腹血糖(FPG)、糖化血红蛋白(HbA1c)变化,并采用抑 郁自评量表(SDS)、焦虑自评量表(SAS)、生活质量评定表(QOL)对患者的生活质量进行评定。结果:观察组护理后2hPG、FPG、 HbA1c 分别为(9.3± 1.4)mmol/L、(6.9± 2.1) mmol/L、(5.1± 1.3)%,低于对照组的(11.3± 1.8)mmol/L、(8.4± 2.6) mmol/L、(6.9± 1.5)%(P<0.05);观察组完全从医率为65.00 %,高于对照组的40.00 %(P<0.01);观察组护理后总体健康评分为(92.84± 7.19) 分, 高于对照组的(84.62± 6.91)分(P<0.05)。结论:针对性健康教育有利于提高老年2型糖尿病患者的从医性,提高血糖控制效率,改 善患者的身心功能,提高生活质量。  相似文献   

5.
口服“金双歧”治疗新生儿黄疸32例疗效观察   总被引:17,自引:0,他引:17  
目的观察双歧杆菌制剂"金双歧”对新生儿黄疸的治疗作用.方法将87例新生儿疸病例随机分为治疗观察组和常规治疗对照组;观察组加用"金双歧”口服.结果2组的黄疸消退的时间分别为(4.0±2.0)d,(5.5±2.5)d(P<0.01).第5天血清总胆红素浓度分别为(45.6±17.34)μmol/L、(82.5±32.6)μmol/L(P<0.01).结论[HTSS〗金双歧对新生儿黄疸有显著的疗效.  相似文献   

6.
雌激素受体基因和长白猪繁殖性能相关研究   总被引:9,自引:0,他引:9  
通过检测612头长白母猪共2 239窝ESR基因的PvuⅡ酶切多态性,分析了不同ESR基因型和长白母猪繁殖性状的相关,以确定ESR基因在猪育种应用的可能性.头胎母猪、第2胎母猪和3胎以上母猪的资料分开统计.群体中B等位基因的频率很低,但似然比检验结果显示群体的基因频率处于哈代-温伯格连锁平衡状态.第1胎BB基因型母猪的总产仔数显著高于AA型母猪(12.05±0.82 vs 10.19±0.24)(P<0.05),但BB基因型母猪的初生仔猪重显著低于AA型母猪(1.23±0.07vs 1.42±0.02)(P<0.05).第3胎以上资料合并,BB基因型母猪的总产仔数显著多于AA和AB基因型母猪(11.98±0.63 vs10.90±0.48/10.92±0.51)(P<0.05),产活仔数显著高于AA型母猪(10.31±0.58 vs 9.43±0.45)(P<0.05);AB基因型母猪初生仔猪重显著低于AA型母猪(1.44±0.04 vs 1.48±0.04)(P<0.05).所有资料合并,BB基因型母猪的总产仔数极显著高于AB型母猪(11.63±0.52 VS 10.63±0.42)(P<0.01),显著高于AA型母猪(11.63±0.52 vs 10.70±0.40)(P<0.05);BB基因型母猪的产活仔数显著高于AB和AA基因型母猪(10.15±0.50 vs 9.33±0.39/9.41±0.41)(P<0.05).其余情况下各基因型母猪间繁殖性状间差异不显著(P>0.05).总之,BB基因型母猪的总产仔数和产活仔数优于其他基因型母猪,但仔猪初生重较低.ESR基因可以作为遗传标记,用于本群长白猪产仔数的选择.  相似文献   

7.
我们的工作是应用YF2PSK31R型超滤器超滤粗提基因工程干扰素,并与盐析法对比。超滤法简便快速条件温和,超滤后干扰素平均收率为93.95%±2.48%,盐析法则为75.93%±3.9%,前者比后者提高18.02%,差异显著。比活前为:4.455E6±7.58E5IU/mg蛋白,后者为:1.6117E6±2.079E5IU/mg蛋白,差异也是显著的  相似文献   

8.
改良异硫氰酸胍一步法提取红豆杉细胞RNA   总被引:18,自引:1,他引:17  
将Chomczynski建立的RNA一步分离法加以适当改进,用以提取红豆杉细胞株E2、TC、H21的总RNA,所获RNA样品的A260/A280比值分别是1.82±0.03、1.85±0.04、1.74±0.03;A260/A230比值分别为2.02±0.03、2.15±0.03、2.03±0.05;得率分别为51.36±0.05μg/g、52.40±0.04μg/g、51.08±0.06μg/g新鲜细胞.变性琼指糖凝胶电泳图谱显示每一样品均具有完好的28S和18S两条亮带.  相似文献   

9.
摘要 目的: 观察慢性乙型肝炎患者外周血树突状细胞表面共刺激分子 B7-H1 的表达及对免疫功能的影响。方法: 检测慢性乙型 肝炎患者肝功能、 HBV-DNA 水平, 将患者分为高病毒载量高 ALT 组 ( A 组) 、 高病毒载量低 ALT 组 (B 组) 、低病毒载量组 (C 组) 及正常对照组 (D 组)。 流式细胞术检测各组患者外周血树突状细胞表面 HLA-DR、 CD80、 CD86、 CD83、 CD1a、 B7-H1 表达, 酶联免 疫吸附试验 (ELISA ) 检测 DC 培养上清液和混合淋巴细胞培养上清液中细胞因子 IL-12、 IL-10 水平。结果: 慢性乙肝患者的树突 状细胞膜表面分子 HLA-DR、 CD80、 CD86、 CD83、 CD1a 的表达均明显降低 (A、 B、 C 组与 D 组比较分别为 42.3± 4.9%、 46.7± 7.0 %、 52.5 ± 6.3 % vs 94.5± 3.5%; 34.5 ± 5.3%、 39.9 ± 6.4%、 45.6 ± 5.2 % vs 90.6± 6.5%; 38.2 ± 8.6%、 36.1 ± 5.4%、 42.5 ± 6.8 % vs 87.7 ± 5.1%; 28.3 ± 6.5%、 25.6 ± 3.4%、 33.5 ± 4.3% vs 82.6 ± 4.8%; 32.3 ± 5.8%、 29.3 ± 5.3%、 48.3 ± 4.9 % vs 68.2 ± 5.2 % P< 0.05), B7-H1 表达水平明显升高(27.48± 21.4%、 21.83± 20.2%、 15.43± 10.32 % vs 4.23± 2.2 % P<0.05)。B7-H1 表达水平与 ALT 呈正相关, 与 IL-12 水平呈负相关。 结论: 慢性乙型肝炎患者树突状细胞功能低下, 其机制可能与树突状细胞高表达 B7-H1 有关。 B7-H1 高表达抑制了淋巴细胞的功能, 导致乙型肝炎病毒持续感染。  相似文献   

10.
摘要 目的:探讨PD-1/PD-L1抑制剂对肺鳞状细胞癌(鳞癌)患者调节性T细胞(Regulatory T cell,Treg细胞)及其亚型的影响。方法:2019年1月至2020年12月来我院就诊的肺鳞癌初诊患者纳入本项研究;患者均接受Nivolumab治疗,根据治疗效果不同,将患者分为缓解组(n=20)和无效组(n=20);流式细胞术检测外周血总Treg细胞、PD-1+Treg细胞、CD150+Treg细胞、CTLA-4+Treg细胞、LAG-3+Treg细胞的比例。结果:缓解组外周血总Treg细胞、CTLA-4+Treg细胞和LAG-3+Treg细胞的比例分别为4.052±0.231%、1.616±0.099%和0.328±0.021%,无效组的比例分别为5.532±0.395%、3.277±0.224%和0.857±0.108%,差异均具有显著的统计学意义(t=3.239,P=0.009;t=6.776,P<0.001;t=4.807,P<0.001);缓解组外周血PD-1+Treg细胞和CD150+Treg细胞的比例分别为0.195±0.016%和1.530±0.113%,无效组的比例分别为0.203±0.018%和1.787±0.157%,差异均不具有统计学意义(t=0.318,P=0.757;t=1.329,P=0.214)。结论:PD-1/PD-L1抑制剂治疗无效的肺鳞癌患者外周血总Treg细胞、CTLA-4+Treg细胞和LAG-3+Treg细胞的比例均显著升高。  相似文献   

11.
目的:分析2014 年我校在校教职工体检结果。方法:2200 例于本校2014 年10 月-2014 年11 月期间参加体检的教职工进 行体格检查、实验室检查以及其他辅助检查,分析体检结果并对不同性别和不同年龄段检出结果进行分析比较。结果:2200 例在 校教职工体检结果发现1203 例检查结果异常,检出率为54.68%,检出率最高的前十种疾病分别为高脂血症、脂肪肝、高血压、高 尿酸血症、糖尿病、心电图异常、肾结石、甲状腺结节、胆结石、胆囊息肉;体检检出率前十的疾病中,男性受检者高脂血症、脂肪 肝、肾结石患病率显著高于女性受检者,差异均有统计学意义(P<0.05);不同年龄段受检者高脂血症、脂肪肝、高血压、高尿酸血 症、糖尿病、心电图异常、胆结石检查率比较差异有统计学意义(P<0.05)。结论:在校教职工健康体检检查结果异常率较高,检出 病种多,且不同性别和年龄段间存在差异。  相似文献   

12.
The outbreak of influenza A comes from a relatively stable state is a critical phenomenon on epidemic. In this paper, influenza A varying from different states is studied in the method of dynamical network biomarkers (DNB). Through studying DNB of influenza A virus protein, we can detect the warning signals of outbreak for influenza A and obtain a composite index. The composite index varies along with the state of pandemic influenza, which gives a clue showing the turn point of outbreak. The low value (<1) steady state of the composite index means influenza A is normally in the relatively steady stage. Meanwhile, if the composite index of a certain year increases by more than 0.8 relative to the previous year and it is less than 1 and it increases sharply and reaches a peak being larger than 1 in next year, it means the year is normal in the critical state before outbreak and the next year is normally in the outbreak state. Therefore, we can predict the outbreak of influenza A and identify the critical state before influenza A outbreak or outbreak state by observing the variation of index value.  相似文献   

13.
This paper studies drivers for eco‐innovation in Russian manufacturing firms on a sample of 2,212 innovative firms, of which over 600 introduced eco‐innovations. The companies in our sample specifically mention environmental regulation as a reason for engaging in eco‐innovations. Furthermore, we show that those firms who engage in eco‐innovations are motivated even stronger by the desire to increase resource efficiency. Companies under state ownership are especially prone to a higher likelihood to invest. We conclude that regulations are mostly relevant to the late comers who are obliged to follow minimum standards. On the other hand, the state uses its controlling influence to press companies under their control to exceed these minimum standards. Thus, we argue, state ownership does indeed have an influence on both the likelihood to eco‐innovate and on the levels of spending. Eco‐innovative state‐owned companies are only prone to invest in eco‐innovations, if they get additional money.  相似文献   

14.
China's Natural Forest Conservation Program (NFCP) is aimed at improving the fragile and unstable ecological environment and has become one of the largest ecological restoration programs in the world because of its enormous investment and effects. It is important to work out and strengthen new measures to overcome difficulties to promote more ecosystem services and human well‐being in the NFCP. This study focused on how to evaluate the ecosystem services change brought about by implementing the NFCP. Taking the key state‐owned forest areas in the Northeast and Inner Mongolia as the study area, we provide a basic overview of development and construct an evaluation index system and a distributed calculation method for the NFCP to analyze the implications of the NFCP on ecosystem services combined with multi‐source data coupling. An evaluation index system for NFCP ecosystem services was constructed. The system includes five ecological service functions and 12 evaluation indices. The trade‐off and/or synergistic analysis of ecosystem services were carried out. The regional characteristics and changes in the NFCP ecosystem services were emphasized. Although it has not been implemented for a long time, the NFCP has had a great impact on ecosystem services because it reduces soil and water losses, increases soil fertility, strengthens the forest carbon sink and helped the forest accumulate nutrients and purify the atmosphere. Socioeconomic factors affect the NFCP ecosystem services, such as the implementation area of NFCP, investment amount of NFCP, area ratio of nature reserves, and yield of tree stock volume. Policy drivers of the NFCP, changes in the economic structure and reductions in forest yield are the main factors affecting the change in NFCP ecosystem services. Although the NFCP has positively affected the society, the economy, and the ecological environment, it has also generated some problems, such as the improper management of forest resources, shortage of capital investment, staff transfer, etc. The social and economic problems will be transient with implementation of the NFCP, and the structural changes in forestry and agriculture may eventually benefit the forestry workers and other stakeholders.  相似文献   

15.
Photosynthetic state transitions are a well-known phenomenon of short-term adaptation of the photosynthetic membrane to changes in spectral quality of light in low light environments. The principles of the monitoring and quantification of the process in higher plants are revised here. The use of the low-temperature excitation fluorescence spectroscopy for analysis of the photosystem I antenna cross-section dynamics is described. This cross section was found to increase by 20–25% exclusively due to the migration and attachment of LHCIIb complex in State 2. Analysis of the fine structure of the additional PSI cross-section spectrum revealed the 510 nm band, characteristic of Lutein 2 of LHCIIb and present only when the complex is in a trimeric state. The excitation fluorescence spectrum of the phospho-LHCII resembles the spectrum of aggregated and hence quenched LHCII. This novel observation could explain the fact that at no point in the course of the state transition high fluorescence and long lifetime components of detached trimeric LHCII have ever been observed. In the plants lacking Lhcb1 and 2 proteins and unable to perform state transitions, compensatory sustained adjustments of the photosystem I and II antennae have been revealed. Whilst the major part of the photosystem II antenna is built largely of CP26 trimers, possessing less chlorophyll b and more of the red-shifted chlorophyll a, photosystem I in these plants contains more than 20% of extra LHCI antenna enriched in chlorophyll b. Hence, both photosystems in the plants lacking state transitions have less spectrally distinct antennae, which enable to avoid energy imbalance due to the changes in the light quality. These alterations reveal remarkable plasticity of the higher plant photosynthetic antenna design providing the basis for a flexible adaptation to the light environment.  相似文献   

16.
17.
目的 了解安徽省医务人员对医联体建设及认知情况。方法 以安徽省某医联体医务人员为研究对象,随机抽取3家医疗机构的医务人员共216名进行问卷调查,应用SPSS19.0软件进行统计分析。结果 在与各医联体成员单位开展的活动中,开展频次前三位的活动是专家坐诊(65.74%)、双向转诊(62.04%)和进修学习(56.94%)。37.04%的医务人员对医改方案和医联体指导意见表示不了解。63.43%的医务人员对目前工作状态不满意,不满意原因前三位分别是薪资待遇(40.73%)、职业发展前途(25.45%)和受尊重程度(21.09%)。90.27%的医务人员认为医联体建设需要政府扶持。结论 安徽省某医联体活动开展较好,医务人员工作积极性较高,但是在政策解读、活动内涵、人才培养等方面仍需进一步提高。  相似文献   

18.
目的 考察当前我国医务人员薪酬公平感状况及影响因素。方法 综合运用文献分析、专家访谈和座谈会的方法,自编医务人员从业状况调查问卷进行整群抽样。 结果 我国医务人员月收入水平较低,三分之二的被调查者薪酬公平感差,在医生群体中高达73.0%;三级甲等公立医院医务人员的薪酬公平感较高。医务人员薪酬公平感差的诱因:薪酬构成不合理、工作压力大、从业环境差。结论 重视医务人员人力成本价值,提升医护人员的薪酬公平感,借助非经济激励措施,保障医务人员合法权益。  相似文献   

19.
??????? 目的 探索在保证护理安全的基础上提升护理工作效率的方法。 方法 按实施不同制度的时间段将患者分为A组和B组,A组实行三级责任护理管理制度;B组在实行三级责任护理管理制度并对现有病区进行合理分区的基础上,依据患者危重分级和护理人员分层来分配每个床单位的责任护士(双向分层管理制度),两组进行护理总时数、所护理的患者人数、不同危重分级患者的平均护理时数、同一患者不同危重分级平均天数等比较。 结果 B组中不同分层护理人员所护理的患者危重分级与护理时数成正比,但总护理时数相近,所护理人数随危重分级提高而减少,危重分级1级患者平均住院天数明显下降。 结论 双向分层管理组相对于三级责任护理管理组更能保证护理安全、提升护理工作效率。  相似文献   

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目的 通过考察医务人员工作倦怠与特质情绪智力的相关关系,为探索改善医务人员工作倦怠状况的方法提供依据。方法 采用随机抽样的方式对552名医务人员进行工作倦怠和特质情绪智力问卷的调查。结果 (1)工作倦怠与特质情绪智力负性相关关系显著;(2)总体上,特质情绪智力对工作倦怠具有一定的负向预测作用。结论 可以通过对医务人员特质情绪智力的培养改善其工作倦怠感,培训方案的设计要注意整体性和全面性。

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