2型糖尿病患者血清总同型半胱氨酸、叶酸水平与T淋巴细胞亚群的相关性研究

目的观察血清总同型半胱氨酸(total homocysteine,t Hcy)、叶酸水平及外周血T淋巴细胞亚群在2型糖尿病(type 2dibaetes mellitus,T2DM)患者中的变化,探讨t Hcy、叶酸与T2DM细胞免疫间的关联性。方法 2014年7月—2015年4月采用流式细胞术和化学发光免疫分析技术分别检测74例单纯T2DM、44例糖尿病肾病(diabetic nephopathy,DN)患者及124例健康对照血清中t Hcy、叶酸水平和外周血T淋巴细胞亚群变化。计量资料比较采用t检验,计数资料比较采用χ2检验,数据间关联性分析采用Pearson相关分析,P0.05为差异有统计学意义。结果 T2DM组与对照组患者叶酸、t Hcy、CD3+细胞、CD3+CD4+细胞、CD3+CD8+细胞比较,差异均有统计学意义(t=13.152、8.305、13.052、15.814、8.524,均P0.05);单纯T2DM组与糖尿病肾病(diabetic nephropathy,DN)组患者的叶酸、t Hcy、CD3+细胞、CD3+CD4+细胞、CD3+CD8+细胞比较,差异均有统计学意义(t=4.494、4.326、3.765、6.750、5.459,均P0.05)。血清t Hcy水平与叶酸水平、CD3+细胞、CD3+CD8+细胞呈负相关(r=-0.300、-0.116、-0.130,均P0.05),与CD3+CD4+正相关(r=0.267,P0.05)。血清叶酸水平与CD3+CD4+细胞呈负相关(r=-0.108,P0.05)。结论高t Hcy可能通过T细胞介导的免疫损伤在T2DM的发生发展中起作用,叶酸也会对T2DM的细胞免疫产生影响。     

卡提素调节支气管哮喘细胞免疫变化的研究

本文用卡提素防治支气管哮喘,并观察治疗前后患者细胞免疫变化,结果显示卡提素治疗后T_3~+(成熟T细胞)、T_4~+(辅助/诱导T细胞)、T_4~+均较治疗前显著升高,说明卡提素作为免疫增强剂可改善支气管哮喘患者的细胞免疫功能。因此,对于该病患者于每年好发季节前应用卡提素做预防性治疗,可减少或减轻哮喘的急性发作。     

肾综合征出血热患者T细胞亚群数量与白细胞介素2,4水平变化的关系

采用ABC免疫组化染色法及单克隆抗体夹心法ELISA，同步检测了34例肾综合征出血热（HFRS）患者外周血T细胞亚群数量和血清白细胞介素2和4（IL－2、IL－4）水平。发现HFRS病程中各T细胞亚群数量均有不同程度的升高，其中CDS阳性T细胞在各病期均有升高。IL－4水平升高仅见于发热期．而IL－2的升高主要在低血压期和少尿期。病程中有CD4／CD8比值的下降甚至倒置。这种比值的变化与IL－2和IL－4的动态变化有一定的相关性。结果揭示，在HFRS发病机理中存在Thl型和Th2型免疫反应等多种免疫病理机制。     

淋巴细胞亚群在成人麻疹患者中的变化及其临床意义

随着麻疹疫苗的广泛应用，麻疹发病的年龄有后移现象，成人麻疹的发病率明显增加。麻疹的发病机制除了与麻疹病毒侵入细胞直接引起细胞病变外，全身性迟发型超敏性细胞免疫反应在麻疹的发病机制中起了非常重要的作用。在成人麻疹的发病过程中，检测其细胞免疫功能的变化，尚少见报道。为了解成人麻疹细胞免疫功能状况，探究其发病机制，我们对2006年1～5月无锡地区住院的成人麻疹患者外周血T细胞亚群（CD3、CD4、CD8）及自然杀伤细胞（NK细胞）、细胞毒性T细胞（CTL细胞）进行了检测，并对它们的相互关系进行了分析。     

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.     

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。     

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。