哮喘患者外周血Treg和Th1/Th2的变化及其与哮喘病情的关系

目的：探讨哮喘患者外周血调节性T细胞（Treg）以及辅助性T细胞（Th1/Th2）的比例的变化,探讨其在哮喘的临床治疗中的作用。方法：80例哮喘患者（哮喘组）按临床表现分为急性发作期组（54例）和缓解期组（26例）,同时选择50例健康体检者。应用流式细胞仪检测上述各组外周血CD4＋CD25＋Foxp3＋Treg、CD4＋IFN-γ＋Th1和CD4＋IL-4＋Th2细胞水平,并进行统计学分析。结果：哮喘组CD4＋CD25＋Foxp3＋Treg水平亦明显低于正常对照组（P〈0.05。其中急性发作期组Treg水平明显低于缓解期组和正常对照组（P〈0.05）。而哮喘组Th1/Th2比值显著低于对照组（P〈0.05）,且在哮喘急性发作组中Th1/Th2比值显著低于缓解期组和正常对照组（P〈0.05）。结论：提示Treg和Th在哮喘的发生和发展中起着重要的作用。     

晚期非小细胞肺癌患者外周血Th17细胞和Treg细胞水平与化疗敏感相关性研究

目的:探讨晚期非小细胞肺癌患者外周血Th17细胞和Treg细胞水平和化疗敏感性相关性。方法:2选取78例晚期非小细胞肺癌患者为病例组,同时纳入健康人群40例为对照组。病例组肺癌患者采用TP方案,化疗前后采用流式细胞计数检测外周血Th17(CD4~+γ-IFN~+)、Treg(CD4~+CD25~+Foxp3~+)水平,完成2个化疗疗程后,评价化疗效果及敏感性。结果:病例组外周血Th17细胞和Treg细胞水平明显高于对照组,差异有统计学意义(p0.05)。病例组第一次和第二次化疗前外周血Th17细胞和Treg细胞水平高于化疗后水平,差异有统计学意义(p0.05)。根据WHO实体肿瘤化疗效果判定标准,CR为化疗敏感组、PR、SD为化疗有效,PD为化疗无效,将所有病例组分为化疗敏感性组、有效组和无效。第一次化疗前和第二次化疗前外周血Th17细胞和Treg细胞水平,化疗敏感组水平明显高于有效组和无效组,而有效组水平高于无效组,差异有统计学意义(p0.05)。结论:肺癌患者晚期外周血Th17细胞和Treg细胞水平明显升高,其Th17细胞和Treg细胞水平和化疗敏感性呈正相关的趋势。     

双歧杆菌对溃疡性结肠炎小鼠外周血和肠系膜淋巴结CD4~＋ CD25~＋ Foxp3~＋调节T细胞表达的影响

目的探讨双歧杆菌治疗溃疡性结肠炎与CD4＋ CD25＋ Foxp3＋调节T细胞的相关可能机制。方法采用DSS制作UC小鼠结肠炎模型,随机分成3组：正常对照（NC）组,模型（MD）组,双歧杆菌治疗（BbT）组。造模7 d后,给予双歧杆菌后续治疗7 d。评估小鼠疾病活动指数（DAI）,结肠行HE染色及病理学评分（HDS）;流式细胞仪检测外周血和肠系膜淋巴细胞中表达CD4＋ CD25＋ Foxp3＋的Treg细胞的百分比率。结果 BbT组的DAI明显低于模型组（P〈0.05）;MD组HDS明显高于正常组（P〈0.05）;BbT组的HDS明显低于模型组（P〈0.05）;模型组外周血和肠系膜淋巴细胞CD4＋ CD25＋ Foxp3＋Treg细胞占CD4＋T细胞的百分率明显低于正常组（P〈0.05）;BbT组结肠外周血和肠系膜淋巴细胞CD4＋ CD25＋ Foxp3＋Treg细胞占CD4＋T细胞的百分率明显高于模型组（P〈0.05）。结论双歧杆菌可以提高CD4＋ CD25＋ Foxp3＋Treg数量,调节机体和肠道免疫功能,对UC发挥了一定的治疗作用。     

哮喘患者外周血Treg和Th1/Th2的变化及其与哮喘病情的关系

目的:探讨哮喘患者外周血调节性T细胞(Treg)以及辅助性T细胞(Th1/Th2)的比例的变化,探讨其在哮喘的临床治疗中的作用。方法:80例哮喘患者(哮喘组)按临床表现分为急性发作期组(54例)和缓解期组(26例),同时选择50例健康体检者。应用流式细胞仪检测上述各组外周血CD4+CD25+Foxp3+Treg、CD4+IFN-γ+Th1和CD4+IL-4+Th2细胞水平,并进行统计学分析。结果:哮喘组CD4+CD25+Foxp3+Treg水平亦明显低于正常对照组(P<0.05。其中急性发作期组Treg水平明显低于缓解期组和正常对照组(P<0.05)。而哮喘组Th1/Th2比值显著低于对照组(P<0.05),且在哮喘急性发作组中Th1/Th2比值显著低于缓解期组和正常对照组(P<0.05)。结论:提示Treg和Th在哮喘的发生和发展中起着重要的作用。     

非霍奇金淋巴瘤患者外周血中CD4＋CD25＋调节性T细胞亚群变化初探

目的：检测非霍奇金淋巴瘤（non—Hodgkin’s lymphoma,NHL）患者外周血中CD4＋CD25＋调节性T细胞（CD4＋CD25＋regulatoryTcell,Treg）的改变,探讨Treg与NHL的相关性。方法：病例组（n=60）为本院收治的初诊NHL患者,对照组（n=60）为本院健康体检者,用流式细胞技术联合标记CD4、CD25检测对照组及病例组化疗前、化疗后的外周血中CD4＋CD25＋调节性T细胞的分布特点。结果：（1）病例组化疗前外周血中CD4＋细胞比例显著低于对照组（P〈0．05）,CD4＋CD25＋调节性T细胞比例显著高于对照组（P〈0．05）;（2）病例组化疗后,CD4＋细胞比例明显高于化疗前（P〈0．05）,CD4＋CD25＋调节性T细胞比例明显低于化疗前（P〈0．05）;（3）病例组化疗后CD4＋细胞比例与对照组无显著差异（P〉0．05）,而CD4＋CD25＋调节性T细胞比例显著高于对照组（P〈0．05）。结论：非霍奇金淋巴瘤患者外周血中CD4＋CD25＋调节性T细胞比例升高,存在机体免疫抑制,化疗可降低CD4＋CD25＋调节性T细胞比例。     

原发性舍格伦综合征患者血清炎症因子、外周血淋巴细胞亚群分布与病情严重程度的相关性探究

目的:探讨原发性舍格伦综合征(pSS)患者血清炎症因子、外周血淋巴细胞亚群分布与病情严重程度的相关性。方法:选取2016年1月至2018年8月我院收治的105例pSS患者为研究对象,根据病程将全部患者分为初发组(n=51)、复发组(n=22)与稳定组(n=32),并选取同期来我院体检的50例健康成人作为对照组。比较各组患者的血清肿瘤坏死因子-α(TNF-α)、白细胞介素-1β(IL-1β)与白细胞介素-32(IL-32)水平以及外周血淋巴细胞亚群分布。采用Pearson相关分析探讨pSS患者欧洲抗风湿联盟干燥综合征疾病活动指数(ESSDAI)与其血清炎症因子、外周血淋巴细胞亚群分布的相关性。结果:⑴血清TNF-α、IL-1β水平:初发组、复发组稳定组对照组;血清IL-32水平:初发组、复发组对照组,复发组稳定组。⑵外周血CD4~+/CD8~+比值:初发组、复发组、稳定组对照组;外周血Th1/Th2比值:初发组、复发组对照组;外周血Th17/Treg比值:初发组、复发组、稳定组对照组,且复发组稳定组。四组研究对象的外周血T淋巴细胞、B淋巴细胞、NK细胞的百分比比较差异均无统计学意义(P0.05)。⑶Pearson相关分析显示pSS患者的ESSDAI评分与血清TNF-α、IL-1β、IL-32水平及外周血Th17/Treg比值均呈显著正相关(r=0.271、0.306、0.251、0.198,P0.05)。结论:pSS患者的血清TNF-α、IL-1β与IL-32水平及外周血CD4~+/CD8~+、Th1/Th2、Th17/Treg比值均明显升高,其中血清TNF-α、IL-1β、IL-32水平、外周血Th17/Treg比值与疾病活动度呈明显正相关。     

急性冠脉综合征患者CD4~+T淋巴细胞亚群的变化及临床意义

目的:研究急性冠脉综合征(ACS)患者CD4+T淋巴细胞亚群的变化及临床意义。方法:收集2013年3月-2014年3月入住我院首次行冠脉成形术(PCI)治疗的ACS患者88例以及造影结果正常患者28例。分别于冠脉造影时取冠脉血流式细胞技术检测CD4+T细胞亚群Th1/Th2、Th17/Treg比例表达变化。结果:与对照组相比,ACS组患者冠脉血中Th1、Th17细胞占CD4+T淋巴细胞的百分比显著升高,而Th1、Treg细胞占CD4+T淋巴细胞的百分比显著降低,差异具有统计学意义(P0.05)。结论:ACS患者体内免疫反应增强,CD4+T淋巴细胞不同功能亚群均参与了动脉粥样硬化(AS)的发生发展,Th1、Th17可促进AS的进展和不稳定性,而Th1、Treg作用相反。     

脾虚湿蕴证溃疡性结肠炎模型构建及T淋巴细胞变化的研究

目的 构建脾虚湿蕴证溃疡性结肠炎小鼠模型及探明T淋巴细胞在该模型中的特征。方法 C57BL/6小鼠，随机分为Control组、FXY组、3%DSS组、FXY+3%DSS组和FXY+2%DSS组。采用DSS联合番泻叶(FXY)建立脾虚湿蕴证溃疡性结肠炎小鼠模型，造模结束后，HE染色观察结肠组织结构变化；ELISA法检测结肠组织炎性细胞因子的浓度，流式细胞术测定CD4/CD8 T淋巴细胞、Th1/Th2、Th17/Treg细胞水平。结果 FXY组小鼠的临床症状以腹泻为主，3%DSS组的小鼠以便血为主，而FXY+3%DSS组和FXY+2%DSS组小鼠表现出腹泻和便血同行，但FXY+3%DSS组小鼠生存率低至50%。与Control组相比，3%DSS组、FXY+3%DSS组和FXY+2%DSS组体重、结肠长度及抗炎性细胞因子IL-10、TGF-β1浓度均显著降低，而DAI、结肠重量、促炎性细胞因子TNF-α、IL-1β、IL-6浓度均显著上升；FXY+3%DSS组和FXY+2%DSS组肠系膜淋巴结中的CD4、Th1、Th17细胞百分比显著上升，而CD8、Th2、Treg细胞显著下降。结论 番泻...     

分泌性中耳炎患者外周血Th1Th2细胞及T淋巴细胞亚群水平的表达及临床意义

目的:探讨分泌性中耳炎(SOM)患者外周血T辅助细胞1(Th1)、T辅助细胞2(Th2)细胞因子及T淋巴细胞亚群水平的表达及其临床意义。方法:选取我院于2015年1月至2018年1月期间收治的SOM患者135例记为SOM组,根据病程将患者分为急性组(病程14d,49例)、亚急性组(病程14-30d,53例)、慢性组(病程30d,33例)。另外选择同期于我院进行体检的100例健康者为对照组。分别对比SOM组和对照组受试者、不同病程SOM患者外周血Th1细胞因子[干扰素(INF-γ)、白细胞介素-2(IL-2)]、Th2细胞因子[白细胞介素-4(IL-4)、白细胞介素-10(IL-10)]以及T淋巴细胞亚群[CD3~+、CD4~+、CD8~+、CD4~+/CD8~+]水平。采用Pearson相关性分析INF-γ、IL-2、IL-4、IL-10与CD3~+、CD4~+、CD8~+、CD4~+/CD8~+的相关性。结果:SOM组患者外周血INF-γ、IL-2、IL-4、IL-10水平高于对照组(P0.05);急性组患者外周血INF-γ、IL-2、IL-4、IL-10水平低于亚急性组、慢性组,亚急性组患者外周血INF-γ、IL-2、IL-4、IL-10水平低于慢性组(P0.05)。SOM组患者外周血CD3~+、CD4~+、CD4~+/CD8~+水平低于对照组,CD8~+水平高于对照组(P0.05);急性组患者外周血CD3~+、CD4~+、CD4~+/CD8~+水平高于亚急性组、慢性组,CD8~+水平低于亚急性组、慢性组,亚急性组患者外周血CD3~+、CD4~+、CD4~+/CD8~+水平高于慢性组,CD8~+水平低于慢性组(P0.05)。Pearson相关性分析结果显示,SOM患者外周血INF-γ、IL-4与CD8~+呈正相关(P0.05),IL-4与CD3~+、CD4~+呈负相关(P0.05)。结论:SOM患者外周血Th1Th2细胞因子、T淋巴细胞亚群水平均表现异常,且其水平与疾病发生和发展存在一定联系,通过监测Th1Th2细胞因子、T淋巴细胞亚群有助于评估SOM患者病情。     

外周血Treg细胞、T淋巴细胞及其亚群与早期宫颈癌的关系及对淋巴结转移的预测价值研究

摘要 目的：分析外周血Treg细胞、T淋巴细胞及其亚群与早期宫颈癌的关系及对淋巴结转移的预测价值。方法：选择我院自2017年1月至2020年12月接诊的60例接受子宫颈癌根治术及盆腔淋巴清扫术的早期宫颈癌患者作为观察组,另选同期的60例健康体检者作为对照组。比较两组外周血Treg细胞、T淋巴细胞及其亚群水平,使用受试者工作特征曲线（ROC）下面积（AUC）评价外周血Treg细胞、T淋巴细胞及其亚群对淋巴结转移的预测效能。结果：观察组外周血Treg细胞、CD8⁺T细胞水平高于对照组,CD3⁺T细胞、CD4⁺T细胞、CD4⁺/CD8⁺比值均低于对照组（P＜0.05）;观察组术后外周血Treg细胞、CD8⁺T细胞水平较术前降低,CD3⁺T细胞、CD4⁺T细胞、CD4⁺/CD8⁺比值均较术前升高（P＜0.05）;在60例早期宫颈癌患者中,发生淋巴结转移12例;淋巴结转移组术前外周血Treg细胞水平、CD8⁺T细胞高于非淋巴结转移组,CD3⁺T细胞、CD4⁺T细胞、CD4⁺/CD8⁺比值均低于非淋巴结转移组（P＜0.05）;经多因素Logistic回归分析,外周血Treg细胞、CD3⁺T细胞、CD4⁺/CD8⁺比值均是早期宫颈癌患者发生淋巴结转移的独立预测因素（P＜0.05）;经ROC曲线分析,外周血Treg细胞、CD3⁺T细胞联合CD4⁺/CD8⁺比值预测早期宫颈癌患者发生淋巴结转移的AUC为0.910。结论：外周血Treg细胞、T淋巴细胞及其亚群水平与早期宫颈癌的病情演变有关,其中外周血Treg细胞、CD3⁺T细胞联合CD4⁺/CD8⁺比值预测淋巴结转移的效能较好,值得进一步研究应用。     

六种藓类植物茎的比较解剖学研究

通过对6种藓类植物,即褶叶青藓(Brachythecium salebrosum(Web.et Mohr.)B.S.G.)、湿地匐灯藓(Plagiomnium acutum(Lindb.)Kop.)、侧枝匐灯藓(Plagiomnium maximoviczii(Lindb.)Kop.)、大凤尾藓(Fissidensnobilis Griff.)、大羽藓(Thuidium cymbifolium(Doz.et Molk.)B.S.G.)和大灰藓(Hypnum plumaeforme Wils.)嫩茎和老茎的石蜡切片和显微观察发现,同一藓类植株的嫩茎和老茎,茎结构稳定,不同种藓类植物茎横切面具有不同特征.植物体茎横切面形状、表层细胞的层数、细胞大小和细胞壁厚薄、皮层细胞大小和形状、中轴的有无以及比例等特征可以作为藓类植物的分科分类依据之一.     

Cause of Senescence of Nine Sorts of Flowers

The levels of endogenous phytohormones and respiratory rate in nine sorts of flowers such as Cymbidium faberi Rolfe, Nopalxochia ackermannii Kunth and others were investigated both at full bloom and senescence and meanwhile the effect of exogenous phytohormones on prolonging the blossoms and promoting ethylene production were tested. There is a high content of endogenous ethylene in all the long-lived flowere, about 3–16 folds higer than the short-lived ones. There is a high level of ABA at full blooming flowers of short-lived flowers, in which there is no or only some cytokinins in it, but the ratio of CTK (6BA+zeatin)/ABA is smaller(l.7). The endogenous ABA reached a much higher level at senescence in all nine sorts of flowers, so it is reasonable to consider that it is ABA which plays an important role of regulation in controlling flower's senescence. There is a much higher level of GA3 and zeatin in the long-lived flowers which is not demonstrated in the shortlived ones. The respiratory rate is one of the factors controtling the longevity of flowers, but it does not play a decided role. Application of 6BA and zeatin prolongs distinctly orchid’s longevity, however exogenous IAA through the promotive action on ethylene production, evidently extends the longevity of the flowers of the Nopalxochia ackermannii Kunth.     

Photoregulation of seed germination of wild-type and of an aurea-mutant of tomato

Seed germination of an aurea mutant of tomato ( Lycopersicon esculentum Mill.) is promoted by continuous irradiation with red, far-red or long-wavelength far-red (758 nm) light as well as by cyclic irradiations (5 min red or 5 min far-red/25 min darkness). Far-red light applied immediately after each red does not change the germination behaviour. Seed germination of the isogenic wild-type, cv. UC-105, is promoted by continuous and cyclic red light while it is inhibited by continuous and cyclic far-red light and by continious 758 nm irradiation. Far-red irradiation reverses almost completely the promoting effect of red light. The promoting effect (in the aurea mutant) and the inhibitory effect (in the wild-type) of continuous far-red light do not show photon fluence rate dependency above 20 nmol m⁻² s⁻¹. It is concluded that phytochrome controls tomato seed germination throgh low energy responses in both the wild type and the au mutant. The promoting effect of continuous and cyclic far-red light in the au mutant can be attributed to a greater sensitivity to P_fr.     

真菌类遗传学分析的知识结构教学

本文以认知结构理论为指导,讨论了真菌类遗传分析与高等动植物遗传分析的内在联系,认为利用这种内在联系进行教学可收到好的效果并说明了作者的具体教学过程。 Abstract:In the paper, the relationship between genetic analysis of Fungi and genetic analysis of high animal and plant was discussed.A good results were obtained when we adopted this method in the teaching.     

龙胆科药用植物化学成分的研究现状

龙胆科植物在我国的分布范围很广,且多数为药用植物,其多数种属的药用植物,至今其化学成分尚未被系统研究。综述了目前龙胆科药用植物的化学成分的研究现状及一般提取方法,对近年来发现的环烯醚萜及裂环烯醚萜类化合物进行了总结,为本科药用植物的更深入研究提供了参考。     

The effects of glutamine of the maintenance of embryogenic cultures of Cryptomeria japonica

Summary Embryogenic tissues of sugi (Cryptomeria japonica) were induced on a modified Campbell and Durzan (CD) medium containing 1 μM 2,4-dichlorophenoxyacetic acid (2,4-D) and 600 mg l⁻¹ glutamine, and subcultured in the medium of the same composition for over 1 yr. This resulted in a mixed culture of embryogenic and non-embryogenic cells. When embryogenic cells were isolated and cultured independently, their capacity to form embryogenic aggregates was lost. Thus, the non-embryogenic cells present within a mixed culture system were essential to the formation of embryogenic aggregates. When embryogenic tissues were isolated and cultured independently on a high glutamine-containing (2400 mg l⁻¹) medium, dry weights and endogenous levels of glutamine increased, and the tissue could generate a large number of embryogenic aggregates. Amino acid analysis of embryogenic and non-embryogenic cells from the maintenance culture indicated a higher level of glutamine was present in the latter. The high endogenous level of glutamine in the non-embryogenic portion of mixed cell masses may be the supplier of glutamine for maintaining the embryogenic property of the tissues.     

Specificity of action of piperidylcholine derivatives as substrates of cholinesterases of various origin

The review deals with study of enzymologic properties of a novel highly specific acetylcholinesterase substrate, N-(β-acetoxyethyl) piperidinium iodomethylate (“piperidylcholine”), and its 30 derivatives that were tested as effectors of cholinesterases of mammals and various species of Pacific squids. It was proven for the first time that responsible for specificity of action was structure of cyclic ammonium grouping of the alcohol part of molecule of the ester substrate. Analysis of specificity is performed based on enzymatic hydrolysis parameters—activity of catalytic center of cholinesterases and bimolecular constant of the reaction rate that are determined at optimal and low substrate concentrations. Among the specially synthesized group of thioester compounds there is revealed one more highly specific acetylcholinesterase substrate—N-(β-acetoxyethyl) piperidinium.     

Interconnection of parameters of regulation system of lipid peroxidation and of morphophysiological parameters of mouse liver

A complex analysis of seasonal fluctuations of the mean group parameters of the system of regulation of lipid peroxidation has been performed in liver of Balb/c mice. Association of lipid characteristics and morphophysiological parameters is studied in the Balb/c mouse liver. An inter-connection is revealed between the liver index and the amount of lysoforms of phospholipids, the scale and character of the interconnection differing essentially depending on proportion of phos-phatidylcholine in mouse liver phospholipids.