克隆氏病8例临床分析

克隆氏病为临床少见病 ,本文统计了本院 1995年 1月～ 1998年 5月收治的克隆氏病患者 8例 ,总结其临床特征如下。1　资料与方法1 1　一般资料 :本文 8例患者其中男 4例 ,女 4例。年龄最小 15岁 ,最大 71岁 ,平均年龄 34 2 5岁。首次发病年龄以 2 0～ 2 5岁居多 ,8例患者中均无家族史。1 2　临床表现 :8例患者均出现腹痛、腹泻、腹胀 ,其中发热 5例 ,恶心呕吐 1例 ,食欲不振 5例 ,消瘦 6例 ;查体 :腹部压痛 8例 ,贫血 5例 ,右下腹肿块 2例 ,肝肿大 1例 ,脾肿大 4例 ;并发症 :瘘管形成 1例 ,脓肿 2例 ,肠梗阻 2例 ,中毒性巨结肠 1例。1 3　辅…     

Changes in T .lymphocyte subsets after severe traumatic brain inJury

BACKGROUND： Besides local changes of cranial parenchymal cells, hemorrhage, etc., severe traumatic brain injuries also cause the changes of total body fluid and various functions, and the changes of lymphocytes and T lymphocyte subsets should be paid more attention to. OBJECTIVE： To reveal the changing laws of T lymphocyte subsets after severe traumatic brain injury, and compare with mild to moderate brain injury. DESIGN： A comparative observation. SETTINGS： Department of Neurosurgery, Longgang District Buji People＇s Hospital of Shenzhen City; Central Laboratory of Shenzhen Hospital of Prevention and Cure for Chronic Disease. PARTICIPANTS： All the subjects were selected from the Department of Neurosurgery, Longgang District Buji People＇s Hospital of Shenzhen City from August 2002 to August 2005. Thirty patients with severe brain injury, whose Glasgow coma score （GCS） was ≤ 8 points, were taken as the experimental group, including 21 males and 9 females, aging 16 - 62 years. Meanwhile, 30 patients with mild traumatic brain injury were taken as the control group （GCS ranged 14- 15 points）, including 18 males and 12 females, aging 15 -58 years. All the subjects were in admission at 6 hours after injury, without disease of major organs before injury Informed consents were obtained from all the patients or their relatives. METHODS： （1） The T lymphocytes and the subsets in peripheral blood were detected with immunofluorescent tricolor flow cytometry at l, 3, 7 and 14 days after injury in both groups. （2） The conditions of pulmonary infections were observed at 4 days after injury. The differences of measurement data were compared with the t test. MAIN OUTCOME MEASURES： Changes of T lymphocytes subsets at 1 - 14 days after severe and mild or moderate traumatic injury. RESULTS： Finally, 28 and 25 patients with mild to moderate traumatic brain injury, whereas 25 and 21 patients with severe traumatic brain injury were analyzed at 7 and 14 days respectively, and the missed ones died due to the development of disease. （1） Changes of T lymphocyte subsets： At 1 and 3 days after injury, CD3, CD4, CD8, CD4/CD8 began to decrease, whereas CD8 increased in the experimental group, which were very significantly different from those in the control group （t =2.77 - 3.26, P 〈 0.01）, and began to recover at 7 days, which were significantly different from those in the control group （t = 2.06 - 2.24, P 〈 0.05）, and generally recovered to the normal levels at 14 days （P 〉 0.05）. （2） Conditions of pulmonary infections： At 4 days after injury, the rate of pulmonary infection was significantly different between the experimental group and control group [73% （22/30）, 0, x2=37.29, P 〈 0.01]. CONCLUSION： Patients with severe traumatic brain injury suffer from damages of cellular immune function at early period （within 7 days）, and they are easily to be accompanied by pulmonary infections.     

Epo多克隆抗体对抗Epo活性的研究

促红细胞生成素(Erythropoieti Epo)是促进骨髓红系祖细胞生长、增殖、分化和成熟的主要刺激因子,在高原红细胞增多症(HAPC)发病机理中起关键性作用。本文采用Epo多克隆抗体作为Epo拮抗剂,观察其抑制红系增殖、分化和成熟的作用,为临床应用Epo抗体治疗高原红细胞增多症提供理论依据。作者随机选取高原红细胞增多症患者8例,对其均进行临床检查及血液化验,于髂骨抽取骨髓,分离单个核细胞,在高原现场(海拔3680m)做以下条件骨髓培养:空白对照培养(既不加Epo,亦不加Epo抗体);加Epo常规培养(加Epo,但不加Epo抗体);加Epo抗体实验培养(既加Ep…     

CD4+CD8+和CD4+/CD8+比值在乙型肝炎发病机制中的意义

目的 探讨T细胞亚群在乙型病毒性肝炎发病中的作用。方法选择不同类型的肝炎病人，比较分析其外周血CD4^ 、CD^ 和CD4^ ／CD^ 比值。结果 各型乙型病毒性肝炎患者血清中CD4^ 细胞及CD4^ ／CD^ 比值均低于正常对照组，而且急性肝炎大于慢性肝炎(轻中度)大于慢性肝炎(重度)；CD^ 细胞则相反(P＜0．05)。结论 人体外周血CD4^ 、CD8^ 绝对数和CD4^ ／CD^ 比值影响着HBV感染后的患者的临床表现。     

稳定表达nucleostemin—siRNA的肿瘤细胞克隆的筛选和鉴定

目的：用脂质体法建立nucleostemin（NS）基因特异性siRNA阳性细胞克隆，为深入研究NS基因在胃癌细胞增殖调控中的作用和机制提供理想的生物学模型。方法：试剂盒法将真核表达载体PCDNA4／C—NS—silencer质粒大量扩增，然后以限制性切酶PVUI酶切线性化处理，用LipofectamineTM2000Reagent将PCDNA4／C—NS—silencer及其对照空载体转染胃癌SGC-7901细胞，经Zeocin抗生素压力筛选后用PCR方法鉴定细胞克隆外源基因整合阳性。结果：经Zeocin抗生素压力筛选后两组细胞均收获多个细胞克隆；PCR结果表明两组细胞克隆外源基因整合阳性。结论：成功建立表达NS～siRNA的胃癌SGC-7901细胞克隆。     

免疫"妥协"和骨髓增生异常综合征细胞克隆

骨髓增生异常综合征(MDS)是一类恶性造血干／祖细胞克隆性疾病，以无效造血和高风险进展为急性白血病为特征，WHO分类将其归入髓系肿瘤。在该病的发生、发展过程中，负有监视并清除恶性克隆功能的免疫系统也发生了异常改变，其突出特征是对恶性造血克隆无足量反应，妥协(compromise)以至耐受(tolerance)，以至MDS逐步向白血病转化。现对此方面研究进展综述如下。     

不同负荷运动训练对大鼠血清β-内啡肽、皮质酮和血浆T淋巴细胞亚群的影响

目的：观察长时间不同负荷运动训练对大鼠免疫系统功能和内分泌系统反应的影响。 方法：实验于2005-06／08在淮阴师范学院体育系运动生化实验室完成。选择健康雄性SD大鼠24只，随机分3组，对照组、120min训练组、60min训练组，每组8只。对照组：平时不运动，自由饮食。60min训练组：前1周每天适应训练30min。然后每天无负重游泳1次，60min／次，共8周。120min训练组：适应期每天游泳增加10min，直至每天游泳120min，共8周。运动条件：玻璃钢游泳池150cm&;#215;60cm&;#215;70cm，水深60cm，约为大鼠身长2倍，水温（31&;#177;1）℃。大鼠末次游泳24h后，依次麻醉，从腹腔动脉处各取血5mL置于洁净的离心玻璃试管中，室温放置0．5h低温分离血清（4℃，3000r／min，10min），-30℃保存，采用放射免疫法测定血清β-内啡肽、皮质酮、白细胞介素2的含量，从腹主动脉取血2mL, 置于一个加抗凝剂的玻璃试管中，采用酶标法测定血浆T细胞亚群（CD3^＋，CD4^＋，CD8^＋）数目。 结果：纳入动物24只，均进入结果分析。①大鼠体质量的变化：训练后对照组、60min训练组，120min训练组的体质量较训练前有显著增加，120min训练组的体质量增长率显著低于60min训练组和对照组；60min训练组的体质量增长率显著高于对照组。②大鼠下丘脑和血清β-内啡肽以及血清皮质酮水平：与对照组相比，120min训练组训练后下丘脑和血清中β-内啡肽水平显著升高，60min训练组下丘脑中β-内啡肽含量显著升高，血清中含量显著降低。与对照组相比，120min训练组血清中皮质酮水平显著升高，60min训练组大鼠血清中的皮质酮水平显著降低。③大鼠血浆T淋巴细胞亚群数目及血清白细胞介素2：与对照组相比，120min训练组训练后血清白细胞介素2含量显著下降，60min训练组血清中自细胞介素2水平显著升高。与对照组相比，60min训练组血清CD3^＋，CD4^＋数目显著升高，CD8^＋数目差异无显著性，120min训练组CD3^＋,CD4^＋含量显著升高。 结论：不同负荷运动训练对大鼠免疫功能和神经内分泌的影响不同，两系统之间的内部机制需进一步探讨。     

药物转复室上性心动过速76例疗效观察

室上性心动过速是房窒结以上异位起博点发生快速异常冲动伴／不伴房室结析返或心肌旁道。大多数是阵发性室上性心动过速心电图表现为QRS波群形态正常，PR间期整齐。临床表现：突然发作伴有心悸焦虑不安、眩晕、心前区疼痛，直至发生舒张性心力衰竭或休克。我院2000年6月～2005年6月间门诊，住院经药物转复室上性心动过速41例76例次的临床资料，现报告如下。