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.     

中药提高AIDS患者免疫功能的研究

艾滋病在我国已进入快速传播期，积极开展中医药治疗艾滋病研究具有重要意义。中医学理论认为，艾滋病的病因不外“正虚”、“邪侵”两端。即邪毒入侵和精亏气虚；病机为脏腑虚损和气血津液失常；临床和实验研究已发现一批治疗艾滋病有效的中药，作用机理主要是抑制艾滋病病毒，调整免疫功能和控制机会性感染；其中以增强患者免疫功能最具有中医特色。     

青蒿琥酯皮肤擦剂在小鼠和兔体内的药代动力学研究

将青蒿琥酯溶于苯二甲酸二甲酯,加适量氨酮制成皮肤擦剂。给兔脱毛后,皮肤涂抹此擦剂25mg/kg后,血药浓度达峰时间平均为2 h,峰浓度平均为1.80μg/ml。药物在兔体内平均驻留时间为3.54 h,清除半衰期约为2.46 h。给小鼠脱毛皮肤涂抹擦剂6.7,31.3和71.4 mg/kg,血药浓度在给药后0.5～4 h达高峰,峰浓度分别为0.82,2.05和7.11μg/ml,体内药物平均驻留时间为3.39,2.79及3.54 h,清除半衰期为2.35,1.93及2.45 h。可见,给兔及小鼠皮肤擦剂后,青蒿琥酯吸收良好,血药浓度维持时间较长。     

环氧丙烷对实验动物肝脏的影响

用环氧丙烷对大鼠进行实验性肝中毒研究的结果表明:一定剂量的环氧丙烷可引起大鼠血清GPT、GOT活性升高;病理形态学检查肝组织呈炎症反应。     

中医治疗胆汁反流性胃炎的研究近况

近年来由于胃镜的普及,胆汁反流性胃炎的检出率大大增加,该病逐渐受到人们的重视,已成为消化系的常见多发病。西医目前尚无特效药物治疗。中医药治疗本病无论基础方加减,还是辨证论治,均取得较好疗效,具有一定优势。现对近2年来中医药治疗胆汁反流性胃炎的进展作一综述。     

心血管疾病并发焦虑抑郁症状2050例心理干预治疗分析

目的:了解心血管疾病并发焦虑抑郁症状的情况并探讨心理干预等对焦虑抑郁症状的影响。方法:对住院的2050例心血管疾病并发焦虑抑郁症状的患者进行回顾性分析。结果:心血管疾病患者中并发有焦虑抑郁症状者占56%;其常表现为类似心绞痛、左心衰竭症状,可并发有心律失常;高血压病并发有焦虑抑郁患者对血压升高的耐受性差,动态血压检查以非勺型改变者居多;单纯使用心血管药物治疗效果欠佳,心理干预,焦虑抑郁症状严重者结合抗焦虑抑郁药物疗效显著。结论:心血管疾病患者常并发焦虑抑郁症状,心理干预治疗等可有效改善患者的症状。     

CD44v7/8基因表达与宫颈癌关系的探讨

目的探讨宫颈癌组织中CD44v7/8基因的异常表达及临床意义。方法1986～2000年沈阳医学院附属中心医院采用免疫组化的方法随机测定59例宫颈癌、18例尖锐湿疣和18例慢性宫颈炎组织中CD44v7/8基因的表达情况。结果宫颈癌、尖锐湿疣及慢性宫颈炎3种疾病中CD44v7/8表达阳性率分别为76.27%、11.11%和11.11%,宫颈癌组的CD44v7/8表达分别高于慢性宫颈炎组及尖锐湿疣组,且差异非常显著(P<0.01)。慢性宫颈炎组及尖锐湿疣组比较差异无显著性(P>0.05)。结论CD44v7/8蛋白的表达增强与宫颈癌的发生、发展及和局部浸润转移有关。     

淋巴瘤样肉芽肿与韦格内肉芽肿临床特点的比较

目的 总结淋巴瘤样肉芽肿病(lym phom atoid granulom atosis,LG)与韦格内肉芽肿( egener granulo Wm atosis,W G)的临床特点,从临床上加以鉴别。 方法 回顾性总结我院与北京协和医院 1989 年以来收治的 6 例 LG和20 例 W G 患者的临床资料,并进行比较。 结果 发热、咳嗽及呼吸困难在 LG 中较常见,流涕、鼻衄及关节痛以W G 为多,肺受累以 LG 为多,耳鼻喉、眼及肾病变在 W G 中明显增多,皮肤受损两者相似。W G 患者常有 c-ANCA 阳性及尿沉渣异常。 LG X 线胸片为双侧多发结节,边界不清,多无肺门、纵隔淋巴结肿大; G 则为双侧多发边界清晰W的结节, 易形成空洞, 肺门和纵隔淋巴结可肿大。LG 病理改变为血管中心性淋巴增生性病变, 浸润的细胞主要是小淋巴细胞和不同数量大的不典型淋巴细胞; 而在 W G 中可见坏死性血管炎及大量中性白细胞、浆细胞及少量嗜酸细胞浸润形成的肉芽肿, 部分有多核巨细胞。W G 经治疗后, 多数患者病情缓解; 则疗效不佳。 结论 LG 和 W G 在临 LG床表现、实验室检查、 影像及病理诸方面的差异有利于两者的鉴别诊断。     

刺五加冲剂中异秦皮素的薄层扫描

刺五加冲剂中异秦皮素的测定法为:先用氯仿回流提取,在硅胶G薄层板上用环已烷-氯仿-95%乙醇(4∶12∶1)为展开剂,将异秦皮素与其它成分分离后。再用岛津CS-910型双波长薄层扫描仪进行荧光扫描(激发波长365nm,发射波长500nm)。回收率为101.6%(n=5),变异系数为3.6%。