International course on Laboratory Animal Science, Utrecht, The Netherlands, July 9–20, 2007

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International course on Laboratory Animal Science, Utrecht, The Netherlands, July 9–20, 2007     

肝癌和肝硬化患者CAl9-9水平分析

为了观察分析肝癌和肝硬化患者血清CA19-9水平的差异,我们对肝癌和肝硬化患者进行了血清CA19-9的检测,现报告如下。 对象和方法 一、对象: (一)正常对照组:43例(男34,女19),平均年龄31.5岁。经体检均无异常及肝病史。 (二)病例组:肝硬化34例(男24,女l0),平均年龄51岁。原发性肝癌32例(男23,女9),平均年龄48岁。其中AFP阳性27例,阴性5例。所有患者均经临床、B超、CT及术后病理诊断和血清学检查确诊。 二、方法: (一)标本采集:被检者清晨空腹抽取静脉血3ml,分离血清,-20℃保存待检。 (二)方法:CA19-9采用IRMA法,试剂盒由天津新传生物有限公司提供,按说明书操作。测定仪器为西安262厂生产的6011型γ动免疫计数仪。     

9p—综合征

本文报告一例13岁男孩9号染色体短臂部分缺失(p22→pter)。他与以前所报导的9p-病例具有许多共同特征,如智力发育迟缓,眼距宽,长人中,颈短宽,颈蹼,乳头间距远离以及外生殖器异常等。但不同的是本例具有多指与早熟现象。患者出生时,母亲和父亲的年龄分别为25和50岁,健康,非血缘结婚。父系第一代亲属中有一个男性是智力迟缓,母系第一代亲属中有一个男性为Down氏综合征,父母体检正常。病孩出生体重2.95公斤,身长43公分,生后哭声弱,紫绀,双手均有尺侧多指,8岁10个月时身长147公分,睾丸、生殖器和阴毛发育接近成人。骨龄13岁,血清睾酮含     

IL-9的研究进展

多种免疫细胞能够分泌细胞因子IL-9,例如Th2、Th9、Th17、Treg细胞、NKT细胞、肥大细胞等。最近有关IL-9的研究又有新进展,本文就IL-9的细     

白细胞介素9研究进展

虽然IL-2无疑是最有潜力和广泛活性的T细胞生长因子,但T细胞生长调节远比这复杂得多。在最近几年中,已经越来越清楚IL-2并不是唯一控制T细胞生长的因子,有几种细胞因子,包括IL-4、GM-CSF和人体中IL-1与IL-6的结合,都可诱导IL-2非依赖性T细胞的增殖。几年以前,Uyttenhove等人建立了许     

9例Komoto综合征

我院从１９９４年１２月～１９９６年１２月,共收治Ｋｏｍｏｔｏ综合征患者９例（男２例,女７例）,年龄３～３７岁。２例母孕期前３个月有感冒病史;５例有家族遗传史,均为父系遗传,其中１例女性１９岁子宫发育不良,原发性闭经;９例患者的临床表现见表１。用标准Ｇ...     

Th9与哮喘

人类和动物疾病模型中CD4+Th细胞在获得性免疫应答中发挥着重要的作用。在很长的一段时间内,我们对于其亚群的认识局限于Th1和Th2细胞。但是随着我们对于其分化特点、机制的认识快速进步,最近几年其新的亚群包括Treg(调节性T细胞)和Th17细胞陆续被发现。新近研究表明,在某些特定条件(如IL-4和TGF-β同时存在)下,存在着不同于Th1、Th2和Th17的CD4+Th细胞亚群,即Th9细胞。他们有着独特的分化机制和免疫应答机制,可以产生大量的IL-9。IL-9参与Th2类炎症及病理反应,故其曾被广泛地看作Th2类细胞因子,但与其他Th2类细胞因子如IL-4、IL-5、IL-13等相比,IL-9拥有不同类型的调节作用和生物活性。IL-9是参与免疫应答和免疫调节的重要细胞因子,其可以作用于多种免疫细胞和炎症细胞,在过敏反应中发挥重要作用。本文结合动物和人类过敏疾病模型,简要综述Th9细胞的生物学特征以及其在过敏性哮喘中可能的作用机制。     

Study on Singularity of Chaotic Signal Based on Wavelet Transform

INTRODUCTION The significant information of a signal is often carried by singular characteristics or irregular struc-tures of the signal, for example, the most important information of ECG(electrocardiogram) or EEG isoften presented at the transient points of a signal, such as those points near peaks. The singular charac-teristics of these transient points are more obvious than the smooth parts of signals. Therefore,to studythe singularity of a signal is a meaningful work. Those analysi…     

Can you rely on Treg cells on the rebound?

FoxP3⁺ regulatory T (Treg) cells comprise a highly dynamic population that restrains autoreactivity. Although complete or long‐term depletion of Foxp3⁺CD4⁺ Treg cells in adult mice has been shown to result in chronic inflammation and autoimmune disease, the impact of transient Treg‐cell depletion on self‐reactive responses is poorly defined. A new study published in this issue of the European Journal of Immunology [Eur. J. Immunol. 2014. 44: 3621–3631] shows that, although transient depletion of Treg cells in mice is swiftly followed by recovery of Treg‐cell numbers, the “rebounded” population fails to maintain tolerance, culminating in severe autoimmune gastritis. This commentary explores new questions about the quantitative and qualitative aspects of Treg‐cell function in immunological tolerance raised by this study and others.     

Do genes on rat chromosomes 9, 13, 16, 18, and 20 contribute to regulation of breathing?

As part of a large scale, high through-put physiologic genomics study, we sought to determine whether genes on rat chromosomes 9, 13, 16, 18, and 20 contribute to phenotypic differences in the control of breathing between two inbred rat strains (SS/Mcw and BN/Mcw). Through a chromosomal substitution breeding strategy, we created 5 consomic rat strains (SS.BN9, SS.BN13, SS.BN16, SS.BN18, and SS.BN20), which were BN/Mcw homozygous at only one chromosome and SS/Mcw homozygous at all other chromosomes. Standard plethsmography was used to assess eupneic breathing and ventilatory responses to CO(2) (FI(CO(2))=0.07) and hypoxia (FI(CO(2))=0.12), and Pa(CO(2)) during treadmill exercises provided the index of the exercise hyperpnea. There were no robust differences in eupneic breathing between any strains. The ventilatory response to CO(2) was 150% greater (P<0.001) in the SS/Mcw rats than in the BN/Mcw rats and all consomic strains had the SS/Mcw phenotype. Hyperventilation during hypoxia did not differ between the parental and the consomic strains, but ventilation during hypoxia was greater (P<0.001) in the SS/Mcw than in the BN/Mcw, and the SS.BN9, and SS.BN18 appeared to acquire this BN/Mcw phenotype. The hyperventilation during treadmill walking was greater (P<0.006) in the BN/Mcw and the SS.BN18 rats than in the SS/Mcw rats. Finally, the duration of the apnea following an augmented breath (post sigh apnea, PSA) was greater (P<0.001) in the BN/Mcw and the SS.BN9 rats than all other strains. We conclude that the robust difference between the parental strains in ventilatory CO(2) sensitivity is not due to genotypic differences on the 5 chromosomes studied to date, but genotypic differences on chromosomes 9 and 18 contribute to differences in ventilatory responses to hypoxia, exercise, and/or to the differences in the PSA.     

MMP-9-siRNA对乳腺癌细胞中MMP-9表达的影响

目的:探讨MMP-9小分子干扰RNA(MMP-9-siRNA)对乳腺癌MDA-MB-231细胞中MMP-9表达的影响.方法:化学合成针对MMP-9的小分子干扰RNA(MMP-9-siRNA),并将其转染到乳腺癌MDA-MB-231细胞.本实验分为空白组(不转染任何siRNA)、对照组(转染Control-siRNA 50 nmol/L)和实验组(又分为3个亚组,分别转染10、50、100 nmol/L MMP-9-siRNA)3组.应用RT-PCR法及Western blot法分别在mRNA水平及蛋白水平检测并比较空白组、对照组和实验组中MMP-9表达及其差异.结果:RT-PCR结果显示,对照组MMP-9 mRNA表达率为99.2%±4.9%,与空白组比较差异无统计学意义(P＞0.05);实验组10、50、100 nmol/L MMP-9-siRNA 3个亚组MDA-MB-231细胞MMP-9 mRNA表达率分别为80.3%±5.0%、65.2%±4.5%、55.9%±5.1%,与空白组比较差异有统计学意义(P＜0.05).Western blot结果显示,对照组蛋白表达率为101.7%±3.1%,与空白组比较差异无统计学意义(P＞0.05);实验组 10、50、100 nmol/L MMP-9-siRNA 3个亚组MDA-MB-231细胞MMP-9蛋白质表达率分别为77.6%±3.9%、62.7%±4.1%、55.0%±4.8%,与空白组比较差异有统计学意义(P＜0.05).结论:构建的MMP-9-siRNA能够抑制MDA-MB-231细胞中MMP-9的表达,为基因水平治疗乳腺癌提供实验依据.     

9号环状染色体伴9-三体综合征一例

患儿 男,1月18天,因咳嗽2天入院,无发热及气喘,无呕吐及腹泻,以"支气管炎"收入院.既往20天前因"新生儿肺炎"治疗1周治愈出院.患儿系G2P2,孕38周顺产,出生体重2.7 kg,其父36岁,其母35岁,非近亲婚配,其姐10岁,父母及姐姐身高、体重、智力正正常,外貌无特殊.