慢性肝病患者血清与腹水肿瘤坏死因子及白细胞介素8的水平？…

目的：观察慢性肝病患者血清和腹水肿瘤坏死因子（ＴＮＦ）和白细胞介素８（ＩＬ－８）水平及其临床意义。方法：３２例慢性肝病患者,其中合并原发性腹膜炎（ＳＢＰ）１３例,无ＳＢＰ１９例,用双抗体夹心酶联免疫法（ＥＬＩＳＡ）检测血清和腹水ＴＮＦ,ＩＬ－８的水平。结果：慢性肝病合并ＳＢＰ组血清和腹水ＴＮＦ和ＩＬ－８水平均明显高于无ＳＢＰ组（Ｐ〈０．０１）。死亡组血清和腹水ＴＮＦ和ＩＬ－８水平明显高于存活组（Ｐ     

动脉粥样硬化患者血清TNF—α,IL—6和IL—8的变化及其关系探讨

目的：通过检测动脉粥样硬化（ＡＳ）患者血清肿瘤坏死因子（ＴＮＦ－α）白细胞介素６（ＩＬ－６）和白细胞介素８（ＩＬ－８）的水平，以探讨ＡＳ与这些细胞因子的关系及临床意义，方法：采用双抗体夹心法ＥＬＩＳＡ测定４５例ＡＳ患者及３０例健康者（对照组）血清ＴＮＦ－α，ＩＬ－６和ＩＬ－８水平均显著高于正常人（均Ｐ〈０．００１），且ＴＮＦ－α，水平与ＩＬ－６和ＩＬ－８，ＩＬ－６与ＩＬ－８之间构成正相关，（ｒ分别     

慢性肾功能衰竭患者血清和尿sIL—2R,IL—8及INF—α的研究

目的：了解慢性肾衰（ＣＲＦ）患者血清及尿可溶性白细胞介素－２受体（ｓＩＬ－２Ｒ）、白细胞介素－８（ＩＬ－８）和肿瘤坏死因子－α（ＩＮＦ－α）水平的变化及意义。方法：采用双抗体夹心ＥＬＩＳＡ法检测３６例ＣＲＦ患者及４０例健康对照组血清及尿ｓＩＬ－２Ｒ、ＩＬ－８及ＩＮＦ－α水平。结果：ＣＲＦ患者血清及尿中上述３种因子均显著高于正常对照组（Ｐ〈０．００１），但与血清肌酐（Ｓｃｒ）无明显相关性（相关系数分     

慢性阻塞性肺疾病的气道反应性与血清IL—8因子水平的研究

目的：探讨慢性阻塞性肺疾病（ＣＯＰＤ）的气道反应性ＩＬ－８因子在ＣＯＰＤ发病中的作用，方法：用组胺气道吸入激发试验观察缓解期ＣＯＰＤ，哮喘和健康人的气道反应性，同时测定气道激发前后血清ＩＬ－８水平变化。结果：ＣＯＰＤ和哮喘患者均呈气道高反应性，且ＣＯＰＤ组ＰＤ５０ＦＥＶ１与ＦＥＶ１／Ｐｒｅ％（Ｐ〈０．０２，Ｐ〈０．０５），ＩＬ－８水平与ＰＤ２０ＦＥＶ１无显著相关性，气道激发后，ＣＯＰＤ和哮喘血清Ｉ     

肿瘤患者血浆P-sel、LN和NO水平及临床意义

目的：观察肿瘤患者血浆Ｐ－选择素（Ｐ－ｓｅｌ）、层粘连蛋白（ＬＮ）和一氧化氮（ＮＯ）的水平,并探讨其临床意义。方法：用ＥＬＩＳＡ法检测１６９例不同肿瘤患者血浆中Ｐ－ｓｅｌ和ＬＮ含量,比色法检测ＮＯ的含量。结果：除鼻咽癌组ＬＮ与正常人间组差异无显著性外,其余各肿瘤组血浆Ｐ－ｓｅｌ、ＬＮ和ＮＯ含量均高于正常对照组（Ｐ〈０．０５或Ｐ〈０．０１）,且Ｐ－ｓｅｌ和ＬＮ的升高与ＮＯ呈正相关（Ｐ〈０．００１）,     

病毒性肝炎患者血清肿瘤坏死因子α检测的临床意义

用放射免疫分析法（ＲＩＡ）测定４５例正常人及２０６例病毒性肝炎病人血清肿瘤坏死因子α（ＴＮＦα）的含量，其中急性黄疸型肝炎（ＡＩＨ）６７例，慢性活动型肝炎（ＣＡＨ）３８例，慢性迁延型肝炎（ＣＰＨ）３６例，肝硬化（ＬＣ）４０例，重症肝炎（ＳＨ）２５例。结果显示，病毒性肝炎病人ＴＮＦα水平较正常人明显增高（２２．４２±１８．３７ｆｍｏｌ／ｍｌ）（Ｐ＜０．００１），且与患者病情轻重密切相关。ＳＨ组ＴＮＦα较ＡＩＨ组明显升高（Ｐ＜０．０１）；ＣＡＨ组ＴＮＦα较ＣＰＨ组明显升高（Ｐ＜０．０１）。二种或二种以上肝炎病毒感染时较单一病毒感染时ＴＮＦα增高（Ｐ＜０．０５）。本文还观察了１０８例病情好转的病人，ＴＮＦα含量也下降（Ｐ＜０．０１），而５例病情恶化的病人ＴＮＦα含量明显增高，最高１例达７８．８０ｆｍｏｌ／Ｌ在病情中ＴＮＦα持续不下降或逐渐上升时，提示病情可能向重型转变，这一结果说明ＴＮＦα水平的变化，可以反映肝细胞病变程度，与病毒性肝炎的活动性相关。     

急性脑梗塞与血清白细胞介素—6关系的初步探讨

用双抗体夹心ＥＬＩＳＡ法对４６例急性脑梗塞患者血清ＩＬ－６含量作了检测，结果显示：脑梗塞急性期和恢复期两组均明显高于健康人对照组（Ｐ＜０．００５，Ｐ＜０．０１）；恢复期组略低于急性期组，但无统计学意义（Ｐ＞０．０５）。急性期血清ＩＬ－６含量与脑梗塞估测体积呈正相关关系（ｒ＝０．６４，Ｐ＜０．０５），而与脑梗塞发生部位无关。脑梗塞体积越大，血清ＩＬ－６值越大，提示血清ＩＬ－６含量的测定可能作为早期判断急性脑梗塞脑损害程度的指标。     

胃癌患者血清转化生长因子-α、癌胚抗原和糖链抗原水平的检测及临床意义

目的：检测胃癌患者血清癌胚抗原（ＣＥＡ）、糖链抗原（ＣＡ５０）和转化生长因子－α（ＴＧＦ－α）的水平变化及临床意义。方法：采用放射免疫法和微粒子化学发光免疫法对７８例胃癌,１０例重度胃粘膜不典型增生患者及３０例健康人血清的ＣＥＡ、ＣＡ５０和ＴＧＦ－α作了检测。结果：各期胃癌血清ＣＥＡ、ＣＡ５０和ＴＧＦ－α值均明显高于正常对照组（Ｐ〈０．０５）;Ⅲ、Ⅳ期胃癌的ＣＥＡ、ＣＡ５０水平又显著高于Ⅰ、Ⅱ期胃     

尖锐湿疣患者自然杀伤细胞活性及其与血清白介素—12关系？…

目的：研究尖锐湿疣（ＣＡ）患者自然杀伤（ＮＫ）细胞活性及其与血清白介素１２（ＩＬ－１２）水平的关系,探讨其发病机理。方法：应用ＮＫ细胞毒性试验乳酸脱氢酶释放法（ＬＤＨ－释放法）测定３２例ＣＡ患者ＮＫ细胞的活性;和抗体夹心ＥＬＩＳＡ法检测其血清中ＩＬ－１２水平;并对其ＮＫ细胞活性与血清ＩＬ－１２水平作相关分析。结果：ＣＡ患者ＮＫ细胞活性明显低于正常对照组（Ｐ〈０．０５）;血清ＩＬ－１２水平明显低于正     

风湿性心脏病患儿血清sIL-2R水平变化及其临床意义

目的：风湿性心脏病的发病与机体免疫功能紊乱有关，血清可溶性白细胞介素２受体（ｓＩＬ－２Ｒ）在免疫反应中起重要调节作用。通过检测风湿性心脏病患儿不同时期血清ｓＩＬ－２Ｒ水平变化，以探讨其可能的临床意义。方法：风湿性心脏病患儿４５例，其中活动期２４例，非活动期２１例，对照组３０例。２４例活动期患儿中心功能Ⅰ、Ⅱ级１２例，Ⅲ、Ⅳ级１２例。活动期在应用激素前、非活动期停用激素半年后取血。所有血标本室温下静置２ｈ后取血清放低温冰箱保存，３个月内用ＥＬＩＳＡ法检测其ｓＬＬ－２Ｒ水平。结果：风湿性心脏病活动期患儿血清ｓＩＬ－２Ｒ水平（７１１．６７±１６３．７８）较非活动期（３７３．８１１±５８．７０）及对照组（２８９．６９±１０２．４４）高，差异显著（Ｐ均＜０．０１）；非活动期较对照组高，差异显著（Ｐ＜０．０５）；心功能Ⅲ、Ⅳ级者血清ｓＩＬ－２Ｒ水平（８０１．６７±１４４．５９）较心功能Ⅰ、Ⅱ级者（６２１．６７±１３２．３１）高，差异显著（Ｐ＜０．０１），活动期血清ｓＩＬ－２Ｒ水平与ＥＳＲ呈正相关（ｒ＝０．８２，Ｐ＜０．０１）。结论：风湿性心脏病患儿血清ｓＩＬ－２Ｒ水平与病情有一定关系，血清ｓＩＬ－２Ｒ水平可望成为风湿性     

Web2.0,以个人为中心的互联网时代的到来

本文介绍了Web2．0的知识和背景，对Web2．0出现的基础以及典型技术和应用作了阐述，同时对其作出了前景展望。     

盐胁迫对葡萄苗期多胺和激素代谢的影响

【目的】 研究盐胁迫条件下,葡萄叶片中多胺含量、多胺氧化酶、多胺合成酶活性以及激素的动态变化,研究不同盐胁迫强度对多胺类物质及激素代谢的影响。【方法】 采用盆栽基质培养模拟盐胁迫环境,设置4个NaCl处理梯度:0 (CK)、1、2和3 g/kg。多胺和激素含量的测定采用高效液相色谱法,多胺合成及分解酶活性的测定采用紫外分光光度计比色法。【结果】 盐胁迫处理后,葡萄叶片中多胺含量和脱落酸含量较对照而言显著增加,玉米素含量显著降低,随胁迫时间的延长,Put、Spm、Spd、ABA以及PAO、DAO、ADC、ODC、SAMDC活性均呈先上升后下降趋势,在10 d及10 d后达到峰值。ZT呈逐渐下降的趋势,并随胁迫强度增大而减小;进行显著性分析后,叶片中多胺含量与Put、Spm、Spd含量呈极显著正相关,DAO、ADC、ODC活性与Put含量呈显著正相关,PAO与SAMDC活性与Spm和Spd含量也呈极显著正相关。【结论】 3种多胺经酶的合成代谢后和激素共同缓解葡萄苗所遭受到的盐胁迫,期间主要发生作用的是多胺合成酶,盐胁迫下多胺与激素含量之间的变化关系也十分密切。     

市级综合气象信息分析与管理系统的设计与实现

以抚顺地区3个国家基本站50余年气象资料为依托,采用Microsoft Excel工作表实现由气候和农业气候2部分构成的气象与农业综合信息处理系统的基本思路、方法、内容、用途和使用情况。为了实现气候分析及应用的科学化、客观化、系统化、规范化、程序化及连续化的业务目标,按业务流程设计与实现的,包括资料处理、气候趋势模拟、气候预测、气候鉴定、季节性信息化处理、农作物产量预报、气候生产潜力分析等一系列内容在内的系统建设。关键是解决了大量的计算问题,建立了区域性通用模式。     

Multi-variable grey model (MGM (1,n,q)) based on genetic algorithm and its application in urban water consumption

Urban water consumption has some characteristics of grey because it is influenced by economy, population, standard of living and so on. The multi-variable grey model （MGM（1,n））, as the expansion and complement of GM（1,1） model, reveals the relationship between restriction and stimulation among variables, and the genetic algorithm has the whole optimal and parallel characteristics. In this paper, the parameter q of MGM（1,n） model was optimized, and a multi-variable grey model （MGM（1 ,n,q）） was built by using the genetic algorithm. The model was validated by examining the urban water consumption from 1990 to 2003 in Dalian City. The result indicated that the multi-variable grey model （MGM（1,n,q）） based on genetic algorithm was better than MGM（1,n） model, and the MGM（1,n） model was better than MGM（1,1） model.     

Molecular detection of virulence genes in Campylobacter species isolated from livestock production systems in South Africa

Campylobacter species are a major cause of foodborne bacterial infections in both developed and developing countries worldwide. Campylobacter jejuni is responsible for the majority of infections. This study was conducted to identify virulenceassociated genes in Campylobacter species isolated from livestock production systems in South Africa. A total of 250 fecal samples consisting of cattle(n=50), chickens(n=50), goats(n=50), sheep(n=50) and pigs(n=50) were randomly collected from livestock in Eastern Cape and KwaZulu-Natal provinces of South Africa between April and October 2018. The samples were analyzed for the presence of virulence genes in Campylobacter species using molecular PCR-based methods. It was found that 77 and 23% of Campylobacter jejuni and Campylobacter coli respectively were isolated from all the livestock samples. There were positive significant(P0.05) correlations amongst all the virulence genes that were investigated. Chisquare and Fisher's exact tests were implemented to test for the effect of livestock species on the presence or absence of virulence genes. The study demonstrated that most of livestock species can potentially cause zoonotic infections and food poisoning due to the high prevalence of Campylobacter. The high prevalence of virulence genes highlights the significance of Campylobacter in livestock production systems in South Africa. This requires the implementation of one-health approaches to reduce the impact of foodborne and zoonotic diseases for the welfare of human and animal health.     

红苕饲粮中添加铜和/或喹乙醇对猪生产性能及某些血液生化指标的影响

选体重约38公斤的长白(♂)×成华(♀)杂交猪20头,随机分为四组,饲予四种不同的饲粮,研究饲粮中添加铜和/或喹乙醇对猪生产性能和某些血液生化指标的影响。结果表明:基础组、加铜组、加喹乙醇组和两者同时加组全期日增重分别为674、761、796、678克,日采食量分别为2.50、2.65、2.74、2.40公斤,饲料利用率分别为3.73、3.49,3.44、3.54,添加铜和/或喹乙醇对试验第65天血清铜兰蛋白、尿素氨及屠宰率、背膘厚和眼肌面积无显著影响(p>0.05);添加铜使65天血清碱性碱酸酶活性极显著增高(p<0.01),添加喹乙醇有使之升高的趋势,两者同时添加时,碱性酸磷酶活性降低。     

不同施肥水平对木薯氮磷钾养分积累、分配及其产量的影响

 【目的】通过比较不同施肥水平下木薯氮磷钾养分积累、分配和产量的差异,探讨粤北坡岗地优质高产木薯氮磷钾养分的最佳用量。【方法】以木薯品种南美119为材料,采用“3414”方案,在粤北翁源进行大田试验。试验共设14个处理。【结果】施肥处理的氮素主要分配到地上部,不施肥处理的氮素则主要分配到根部;不同施肥处理的磷素均主要分配到地上部;不施肥处理和不施钾处理的钾素主要分配到根部,不施氮处理的钾素在根、冠间分配较均衡。在木薯不同生长阶段,植株氮磷钾含量均呈下降趋势,但施氮、磷、钾化学肥料处理植株氮磷钾含量的下降速度小于不施氮、磷、钾化学肥料的处理。处理N2P2K2的氮、磷、钾含量和积累量在各生育期均为最大,不施肥处理（N0P0K0）的氮、磷、钾含量和积累量在各生育期均为最小（P＜0.05）。产量最高的是N2P3K2处理,为22 694.06 kg·hm-2,其次是N2P2K2处理,为21 417.87 kg·hm-2。【结论】木薯产量、氮磷钾养分积累及其在根冠间的分配,对施肥水平高度敏感, 适当比例的氮磷钾肥配合施用既可以显著增加木薯植株的氮磷钾含量和积累量,又可以提高产量。在粤北坡岗地木薯生产中,氮素最重要,在氮素得到满足的条件下,磷素较钾素更重要。在本试验条件下,氮磷钾养分最佳用量为358.80 kgN·hm-2、89.10 kg P2O5·hm-2和187.50 kg K2O·hm-2。     

Current progress on genetic interactions of rice with rice blast and sheath blight fungi

Analysis of genetic interactions between rice and its pathogenic fungi Magnaporthe oryzae and Rhizoctonia solani should lead to a better understanding of molecular mechanisms of host resistance, and the improvement of strategies to manage rice blast and sheath blight diseases. Currently, dozens of rice resistance (R) genes against specific races of the blast fungus have been described. Among them, ten were molecularly characterized and some were widely used for breeding for genetic resistance. The Pi-ta gene was one of the best characterized rice R genes. Following the elucidation of its molecular structure, interaction, distribution, and evolution, user friendly DNA markers were developed from portions of the cloned genes to facilitate the incorporations of the Pi-ta mediated resistance into improved rice varieties using marker assisted selection (MAS). However, rice blast is still a major threat for stable rice production because of race change mutations occurring in rice fields, which often overcome added resistance based on single R genes, and these virulent races of M. oryzae pose a continued challenge for blast control. For sheath blight, progress has been made on the exploration of novel sources of resistance from wild rice relatives and indica rice cultivars. A major quantitative trait locus (QTL), named qSB9-2, was recently verified in several mapping populations with different phenotyping methods, including greenhouse methods. The ability to identify qSB9-2 using greenhouse methods should accelerate the efforts on the qSB9-2 fine mapping and positional cloning.     

Virus Location and Lymphocyte Apoptosis in Lymph Nodes of Piglets Infected with PCV-2

The present study has been performed to understand the location of the virus, type of apoptotic cells, and their relation to lymph nodes of piglets infected with porcine circovirus type Ⅱ （PCV-2）. Nine 32-day-old conventional piglets free of infection with PCV-2 were used, and distributed into three groups： control group （n = 3）, piglets inoculated with PCV-2 alone （PCV-2, n = 3）, and PCV-2 inoculated and KLH immunostimulated group （PCV-2 ＋ KLH, n = 3）. Superficial inguinal lymph nodes from all piglets were collected for histological examination after 32 days postinoculation, and immunohistochemistry for PCV-2 detection. Location of apoptotic cells was detected with TdT-mediated dUTP nick end labeling （TUNEL） and cell cycle, and the apoptotic rates were measured by flow cytometry. The characteristic histopathological lesions of the piglets in PCV-2 and PCV-2 ＋ KLH were lymphocyte depletions in the cortex and paracortex of the lymph nodes, epithelioid-like macrophage infiltration, and intracytoplasmic inclusion bodies presented in epithelioid-like macrophages. PCV-2 was mainly found in epithelioid-like macrophages by immunohistochemistry. In the lymph nodes, lymphocytes presented higher apoptotic rates in the cortex by TUNEL, special B-cell areas, and similar apoptotic cells were found in this compartment in the control. The apoptotic rates of the lymph nodes were 0.41, 3.34, and 4.88% in the control, PCV-2, and PCV-2 ＋ KLH groups by flow cytometry, respectively. The apoptotic rates of lymph nodes for PCV-2 and PCV-2 ＋ KLH piglets were significantly higher than those for the control group （P〈0.05 and P〈0.01）. The proliferation index （PI） was 0.17_＋0.01, 0.12_＋0.01 and 0.12_＋0.04 in the control, PCV-2, and PCV-2 ＋ KLH group, the PI of the control group was higher than that of the other groups, but without the statistical difference. PCV-2 can induce lymphocyte depletion in lymph nodes of piglets by blocking cell proliferation and promoting apoptosis. This is one o     

内脐蠕孢属、平脐蠕孢属和凸脐蠕孢属的研究

本文报道了平脐蠕孢属(Bipolaris)一个新种,一个新组合,5个新记录以及凸脐蠕孢属(Exserohilum)一个新记录。讨论了内脐蠕孢属(Drechslera)、平脐蠕孢属、凸脐蠕孢属与长蠕孢属(Helminthosporium)的关系,并就我国已报道的长蠕孢属真菌按Alcorn等~([1,3,4,5,24])人的意见,逐个进行了订正。