共查询到18条相似文献，搜索用时 250 毫秒
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重症肺炎患者免疫功能的初步研究 总被引：1，自引：0，他引：1
目的 对重症肺炎患者的免疫功能变化进行研究。方法 用荧光单抗CD3^ ,CD4^ ,CD25^ ,CD95^ ,CD3^ /CD25^ ,CD8^ /CD28^ ,CD8^ /CD28^-,CD19^ 对淋巴细胞标记和计数。结果 重症肺炎患者体内CD3^ ,CD95^ ,CD3^ /CD25^ ,CD8^ /CD28^ 减少，CD4^ ,CD25^ ,CD19^ 无明显变化，而CD8^ /CD28^-增加。结论 重症肺炎患者B淋巴细胞变化不大，T淋巴细胞因大量凋亡而总数减少，亚群的变化又造成免疫功能紊乱，在临床治疗过程中需改善患者免疫功能。 相似文献
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目的：探讨再生障碍性贫血患者治疗前后外周血T淋巴细胞亚群检测的变化及其在不同治疗中的意义。为合理治疗提供依据。方法：采用流式细胞技术检测40例再生障碍性贫血患者治疗前后外周血T淋巴细胞亚群检测的变化及CD4＋／CD8＋,并根据其比值与正常对照组比较将患者分为比值正常型、比值倒置和比值超高型3个免疫亚型。同时按常规治疗和联合免疫抑制治疗进行疗效比较。结果：单独常规治疗时。3个亚型组之间疗效无明显差异;联合免疫抑制治疗时,比值正常型患者的总有效率与常规治疗组无显著差异,而免疫倒置型和免疫异常型（比值减低和增高）患者总有效率较同组常规治疗疗效均显著提高（P〈0．05）,也显著高于比值正常者（P〈0．05）。结论：大多数再生障碍性贫血患者存在着CD4＋／CD8＋的失调。再生障碍性贫血患者的发病机制与免疫异常有密切的相关性。T淋巴细胞亚群检测对临床了解病情和发病机制、合理选择治疗方案、提高诊断和治疗水平都具有重要价值。 相似文献
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探讨大众健美操对Ⅱ型糖尿病患者血红蛋白A1c和T细胞的影响机制.方法:30名Ⅱ型糖尿病女性患者,进行为期6个月的大众健美操训练,在训练前后测定血红蛋白A1c、全血计数和T淋巴细胞亚群的变化情况.结果:大众健美操训练后,患者的血红蛋白A1c、T淋巴细胞计数以及CD4+、CD8+和CD4+/CD8+发生显著性变化.结论:大众健美操训练可以通过对血红蛋白A1c和T细胞的影响,提高Ⅱ型糖尿病患者的免疫机能,改善病情. 相似文献
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目的:探讨原发性肾病综合症患儿T细胞亚群变化的临床意义。方法:运用SPA花环法检测30原发性肾病综合症患儿活动期和缓解期T细胞亚群的变化。结果:活动期CD3 、CD4 、CD4/CD8低于缓解期,差异显著(P<0.01)与对照组比有统计学差异(P<0.01),缓解期与对照组无统计学差异(P>0.05)。结论:原发性肾病综合症患儿免疫功能低下,T细胞亚群可作为检测其变化的指标之一。 相似文献
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淋巴细胞是机体重要的免疫细胞,淋巴细胞数量和功能的变化能反映机体的免疫水平。本文通过综述的方法论述了运动对淋巴细胞数量、T淋巴细胞及亚群、B淋巴细胞、NK细胞和淋巴细胞凋亡的影响 相似文献
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淋巴细胞是机体重要的免疫细胞,淋巴细胞数量和功能的变化能反映机体的免疫水平。本文通过综述的方法论述了运动对淋巴细胞数量、T淋巴细胞及亚群、B淋巴细胞、NK细胞和淋巴细胞凋亡的影响 相似文献
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对３０例头颈癌患者手术前后的Ｔ淋巴细胞亚群变化进行观察，结果表明：头颈患者的ＣＤ＋８较对照组明显升高（Ｐ＜０．０１），ＣＤ＋４／ＣＤ＋８值比健康人显著降低（Ｐ＜０．０１），且有随临床分期增加而ＣＤ＋８升高及ＣＤ＋４／ＣＤ＋８比值下降的趋势，Ⅰ－Ⅱ期与Ⅲ－Ⅳ期相比有显著性差异（Ｐ＜０．０１）；而手术后ＣＤ＋８逐渐下降，ＣＤ＋４／ＣＤ＋８值却较术前有明显回升，术前与术后比较有显著性差异（Ｐ＜０．０１）．说明头颈癌患者存在着明显的细胞免疫功能紊乱，并随病情的发展而加重；而彻底切除肿瘤是迅速恢复机体细胞免疫功能的有效手段．提示：Ｔ淋巴细胞亚群检测对头颈癌患者的病情发展、免疫功能评定及疗效观察具有一定参考价值 相似文献
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为了更加全面和深入的研究分析黄芪单剂对递增负荷运动员身体免疫机能的影响及机理,在总结前人研究成果的基础上,选用了反映人体免疫机能变化较为敏感和可靠的T淋巴细胞亚群的部分指标,采用对免疫指标变化影响较为直接和有效的"运动"模型来实现预期目的。通过实验我们得出结论:在中等强度运动负荷过程中,连续服用6周黄芪单剂就可以使运动员身体免疫机能得到较明显的改善。 相似文献
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目的寻找在SLE分子发病机制中起关键作用的致病基因的候选基因。方法通过高密度基因芯片技术，得到初发性SLE患者外周血单核细胞及T、B淋巴细胞亚群的基因表达谱，在差异表达显著的基因中挑选4个位于SLE易感区段的基因，通过TaqMan实时PCR技术在55例SLE患者中验证基因的差异表达。结果得到初发性SLE患者外周血单核细胞及T、B淋巴细胞亚群的基因表达谱，确定TRIM，KLRCl，IL-4R及EGR-1基因为SLE易感基因的候选基因，实时PCR结果证明：SLE患者外周血单核细胞中，TRIM基因△Ct值显著低于正常人对照（P〈0．05），基因表达水平为正常对照的2．43倍，IL-4R基因与EGRl基因的△Ct值显著高于正常人对照（P〈0．05），基因表达水平分别为正常对照的0．33倍、0.26倍，KLRCl基因的△Ct值显著高于正常人对照（P〈0．01），基因表达水平为正常对照的0.56倍，在SLE患者外周血T细胞亚群中，TRIM基因△Ct值显著低于正常人对照（P〈0．01），基因表达水平为正常对照的2．94倍，IL4R基因与EGRl基因的△Ct值显著高于正常人对照（P〈0．01），基因表达水平分别为正常对照的0.32、0.21倍，LRCl基因的△Ct值显著高于正常人对照（P〈0．01），基因表达水平为正常对照的0.56倍。在SLE患者外周血B淋巴细胞亚群中，由于B细胞淋巴亚群所占淋巴细胞比率过低，基因检测数据不稳定，故未作统计学分析。结论在系统性红斑狼疮的发病中，患者外周血单核细胞及T、B淋巴细胞亚群细胞基因表达水平发生了改变，主要集中于-系列免疫相关基因，其中TRIM，KLRC1，IL-4R及EGR-1基因在患者群中变化显著，初步断定为SLE易感基因的候选基因。 相似文献
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Sanju Jalla Sunil Sazawal Saikat Deb Robert E. Black Maharaj K. Bhan 《Indian journal of clinical biochemistry : IJCB》2002,17(1):69-74
The development of monoclonal antibodies combined with flow cytometry has revolutionized the analysis of lymphocyte subsets.
These newer methods using the Q-prep leucocyte preparation system require only 1–2 ml of blood as compared to 10 ml required
traditionally. One of the main impediments in the use of this superior technology in Indian laboratories has been the high
cost of reagents. This study evaluated methods to reduce the cost of assays. In the first experiment from 26 healthy subjects,
2ml venous blood samples in EDTA (ethylenediamine tetra-acetate) were obtained. Each sample was divided into two equal portions,
one portion was stained using diluted monoclonal antibody, whereas the other portion was stained using standard concentrations
of antibodies. In the second experiment, blood samples from 12 subjects were again divided into 2 portions; one portion of
each pair was processed using commercial Q-prep reagents while the other portion was processed using our own reagents. In
the first experiment, which evaluated use of a diluted antibody against the standard recommended concentrations, a 5-tube
panel that estimated CD3, CD4, CD8, CD20 was used. In the second experiment CD3, CD4 and CD8 were estimated. The total cost
per sample for a 5-panel estimation was however reduced from $39.11 to $1.10.
Given the proven advantages of using a whole blood stain-lyse method for T cell subset estimations, its use should be encouraged
in developing country settings. With the suggested methods the whole blood Q-prep could be performed at appreciably reduced
costs, without loss in precision. 相似文献
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淋巴细胞亚群的功能及其辐射效应 总被引：1，自引：0，他引：1
应用淋巴细胞单克隆抗体(McAb)的Panning法或亲和层析分纯 CD_4~+、CD_8~+、B细胞和非CD_4~+细胞,也应用PHA、ConA、PWM和LPS分别激活淋巴细胞,然后用~3H-TdR按入、集落形成及羟基磷灰石方法,探讨了各亚群淋巴细胞的调节功能及其辐射效应.实验结果表明PWM能激活CD_4~+、非CD_4~+和B细胞,PWM细胞能诱导LPS细胞转化,其中一种细胞受照即失去协同作用,PWM细胞受照影响更严重.ConA能激活CD_4~+和CD_8~+细胞,两者均可抑制LPS细胞转化,并能互相增强抑制效应,受照后消失.辐射敏感性比较:ConA细胞和PHA细胞大于PWM细胞,PWM细胞大于LPS细胞,CD_8~+细胞和B细胞大于CD_4~+细胞。 相似文献
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Manorama Swain Truptirekha Swain Binoy Kumar Mohanty 《Indian journal of clinical biochemistry : IJCB》2005,20(1):9-17
Background: Autoimmune thyroid disease (AITD), a common organ specific autoimmune disorder is seen mostly in women between
30–50 yrs of age. Thyroid autoimmunity can cause several forms of thyroiditis ranging from hypothyroidism (Hashimoto’s thyroiditis)
to hyperthyroidism (Graves’Disease). Prevalence rate of autoimmune mediated hypothyroidism is about 0.8 per 100 and 95% among
them are women. Graves’ disease is about one tenth as common as hypothyroidism and tends to occur more in younger individuals.
Both these disorders share many immunologic features and the disease may progress from one state to other as the autoimmune
process changes. Genetic, environmental and endogenous factors are responsible for initiation of thyroid autoimmunity. At
present the only confirmed genetic factor lies in HLA complex (HLA DR-3) and the T cell regulatory gene (CTLA 4). A number
of environmental factors like viral infection, smoking, stress & iodine intake are associated with the disease progression.
The development of antibodies to thyroid peroxidase (TPO) thyroglobulin (TG) and Thyroid stimulating hormone receptor (TSH
R) is the main hallmark of AITD. Circulating T Lymphocytes are increased in AITD and thyroid gland is infiltrated with CD4+
and CD8+ T Cells. Wide varieties of cytokines are produced by infiltrated immune cells, which mediate cytotoxicity leading
to thyroid cell destruction. Circulating antibodies to TPO and TG are measured by immunofluorescense, hemagglutination, ELISA
& RIA. TSHR antibodies of Graves’ disease can be measured in bioassays or indirectly in assays that detect antibody binding
to the receptor. 相似文献
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Mariangela Mortato Laura Blasi Giovanna Barbarella Simona Argentiere Giuseppe Gigli 《Biomicrofluidics》2012,6(4)
Herein proposed is a simple system to realize hands-free labeling and simultaneous detection of two human cell lines within a microfluidic device. This system was realized by novel covalent immobilization of pH-responsive poly(methacrylic acid) microgels onto the inner glass surface of an assembled polydimethylsiloxane/glass microfluidic channel. Afterwards, selected thiophene labeled monoclonal antibodies, specific for recognition of CD4 antigens on T helper/inducer cells and CD19 antigens on B lymphocytes cell lines, were encapsulated in their active state by the immobilized microgels. When the lymphocytes suspension, containing the two target subpopulations, was flowed through the microchannel, the physiological pH of the cellular suspension induced the release of the labeled antibodies from the microgels and thus the selective cellular staining. The selective pH-triggered staining of the CD4- and CD19-positive cells was investigated in this preliminary experimental study by laser scanning confocal microscopy. This approach represents an interesting and versatile tool to realize cellular staining in a defined module of lab-on-a-chip devices for subsequent detection and counting. 相似文献
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定期给荷瘤小鼠注射或灌服一定剂量浓度的绞股蓝浸出液后,小鼠体质增强,胸腺的萎缩速度减慢,每克体重的胸腺和脾脏重均显著高于对照组.胸腺与脾脏每克重细胞数增多.每克体重的瘤重明显降低,瘤细胞数减少,取荷瘤小鼠胸腺淋巴细胞与瘤细胞离体混合培养后,被致敏的淋巴细胞的“粘瘤”和“钻瘤”作用加强,癌细胞发生轻度皱缩,淋巴细胞钻入的癌细胞发生裂解,碎片逐渐增多,而淋巴细胞的形态和数量无变化.实验结果表明:纹股蓝浸出液具有增强荷瘤小鼠免疫力和抑制;肿瘤生长的作用。 相似文献