Reduced expression of CD69 and adhesion molecules of T lymphocytes in asthmatic children receiving immunotherapy

T lymphocytes play a fundamental role in the initiation and regulation of chronic inflammatory responses in patients with asthma. CD69 is an early marker of T‐cell activation. The levels of intercellular adhesion molecule‐1 (ICAM‐1, CD54) and L ‐selectin have been reported to increase in patients with allergic diseases and asthma. The present study was therefore undertaken to investigate the expression of CD69, CD54, and L ‐selectin by T lymphocytes of children with asthma, before and after immunotherapy. Eighteen children newly diagnosed with asthma, 11 good and nine poor responders to immunotherapy, and 16 normal subjects, were enrolled in this study. The percentages of CD69⁺, CD54⁺, and CD62L⁺ cells in T lymphocytes were measured by using flow cytometry. The levels of CD69, CD54, and CD62L in serum and culture supernatants were determined by using enzyme‐linked immunosorbent assay (ELISA). The expression of CD69 and CD54 on CD3⁺ T lymphocytes was significantly higher in children with asthma than in control patients. All the patient groups expressed (spontaneously and following stimulation with phorbol myristate acetate and ionomycin together with mite‐extract proteins) greater amounts of CD69 and CD54 than did control subjects. With long‐term immunotherapy, the percentages of CD69⁺ and CD54⁺ T lymphocytes were significantly lower in patients with a good response to immunotherapy. Our results also showed significantly lower serum L ‐selectin levels following immunotherapy. In conclusion, successful immunotherapy resulted in decreased expression and production of CD69 and CD54. These results may explain, in part, the clinical efficacy of immunotherapy.     

嗜铬细胞瘤患者围手术期处理的改进

目的：探讨提高嗜铬细胞瘤患者围手术期安全性的措施。方法：对15例嗜铬细胞瘤患者、术前采用选择性α1受体阻滞剂多沙唑嗪控释片(可多华)控制高血压；11例患者采用3D DCEMRA进行肿瘤定位；术中均采用联合高容量血液稀释(AHH)和术中患者自体血回输纠正血容量。结果：除1例持续性高血压患者需联合钙离子拮抗剂和ACEI药物降压外．其余患者血压控制均为满意；根据3D DCEMRA定位选择手术径路者均顺利完成手术；AHH联合术中自体血回输使14例患者避免了异体输血。结论：本文围手术期处理改进．可多华可明显减少药物的不良反应；采用3D DCEMRA进行肿瘤定位，可增加手术安全性；AHH联合术中自体血回输可减少医疗成本和异体输血，以及由此而引起的并发症。     

加热及增加细胞内氧自由基水平对恶性胶质瘤细胞生物学特性的影响

本文就加热及同时增加细胞内氧自由基水平对恶性胶质瘤细胞存活、增殖和细胞间隙连结通讯的影响做初步观察。用Ｍ．Ｔ．Ｔ法测定胶质瘤细胞存活率；用Ｋｉ－６７抗增殖细胞核抗原单克隆抗体，通过免疫组织化学ＡＢＣ染色分析胶质瘤细胞的增殖活性；用划痕染料示踪技术观察胶质瘤细胞的细胞间隙连结通讯。结果表明，Ｈ２Ｏ２和３ＡＴ能增强加热对胶质瘤细胞存活与增殖的抑制作用，促进胶质瘤细胞间隙连结通讯的改善，存在着明显的剂量和时间效应。实验结果提示，通过内外源性增加胶质瘤细胞内的氧自由基水平，将有助于强化加热治疗胶质瘤效果，并可以减少加热的剂且，降低副作用。     

Clinical observation of Qi deficiency syndrome in 72 patients with chronic obstructive pulmonary disease treated with Yiqi Mianyi Granule

Seventy-two patients of chronic obstructive pulmonary disease (COPD) of Qi deficiency syndrome with abnormal immune indices were treated with Yiqi Mianyi Granule (YQMYG) and the efficacy was compared with that of 30 cases treated with Zhenqi fuzheng Granule (ZQFZG) for control. Results showed that the markedly effective rate of symptomatic improvement of Qi deficiency in YQMYG group was 65.3%, the total effective rate 93.1%. 88.6% of the immune indices lower than normal were corrected and 43. 7% of them were normalized, while for indices that were higher than normal the rate were 78.2% and 52.9% respectively. These results suggested that YQMYG could improve symptom of Qi Deficiency markedly, strengthen cellular immunity and regulate immune dysfunction. Its therapeutic efficacy was obviously superior to ZQFZG (P<0.Q5).     

经蝶垂体腺瘤手术后残留原因分析

目的：探讨经蝶切除垂体腺瘤手术后残留的原因，提高治疗效果；方法：回顾性分析自1992年10月至2003年1月，在我院及外院经蝶手术治疗后，MRI检查证实仍有残留的118例垂体腺瘤。结果：肿瘤主体残留在海绵窦占46．6％，鞍内37．3％，鞍上5．1％，混合9．3％，颅外1．7％；影响肿瘤根除的主要因素，肿瘤侵袭海绵窦46．6％，术者经验不足36．4％，肿瘤侵润生长9．3％，肿瘤体积巨大3．4％，出血多4．2％。针对残余瘤组织再手术者为10．1％，普通放射治疗39．0％，r刀治疗38．2％，药物治疗11．0％。结论：经蝶手术残瘤的主要原因是肿瘤侵袭海绵窦，这些病例不能或很难单纯手术根除；其次是术者经验不足和技术问题而造成。在有残瘤的病例中，有半数以上病例可以通过提高技术水平达到肿瘤的全切或次全切除。     

亚低温在治疗急性颅脑创伤中的疗效和争议

二十世纪90年代初,国内外对亚低温脑保护的作用有了新认识。动物实验研究发现亚低温对实验性颅脑外伤具有显著的治疗保护作用。大多数前瞻性临床应用研究发现30～33℃亚低温能显著降低重型颅脑伤患者的死残率。但美国Clifton教授牵头的9个医学中心合作研究发现亚低温治疗组与对照组无统计学差异.仅能显著提高GCS 6～8分、年龄<45岁、伤后6h内达到亚低温水平的病人的治疗效果。最近一项欧州5家医院多中心前瞻性随机临床研究结果令人兴奋,他们研究证明亚低温对心跳骤停脑缺血缺氧病人有显著治疗保护作用。目前国内外有关亚低温治疗的争议焦点是亚低温治疗的指征、时间窗和时程。     

PREVIOUS INTRAVENOUS CHEMOTHERAPY DOES NOT ALTER RESPONSE RATE OR SURVIVAL TIME OF PATIENTS WITH HEPATIC METASTASES FROM COLORECTAL CANCER TREATED BY HEPATIC ARTERY CHEMOTHERAPY

Background : The present paper addressed the issue of whether pretreatment with intravenous (IV) chemotherapy affects response rate or survival in patients receiving hepatic artery chemotherapy (HAC). Methods : Case note reviews of 164 patients treated in a teaching hospital from June 1990 to July 1996 were carried out. Results : The response rate and carcino-embryonic antigen (CEA) fall in the two groups was almost identical. There was a nonsignificant survival advantage in the non-pretreatment group. Conclusions : Previous administration of IV chemotherapy did not affect the CEA response of patients receiving HAC.     

金尔伦治疗急性颅脑损伤的剂量效应研究

目的探讨金尔伦(盐酸纳洛酮)在治疗大鼠液压脑损伤后神经功能恢复和病理损害程度的剂量效应.方法将104只SD大鼠随机分为4组,伤后早期分别腹腔注射0.03 mg/Kg(小剂量组)、0.3 mg/Kg(中剂量组)、3 mg/Kg(大剂量组)金尔伦和等量生理盐水(对照组),连续7 d.结果中、大剂量组动物伤后脑神经功能恢复、脑水肿减轻程度及光、电镜检查显著优于对照组及小剂量组.结论伤后早期使用中剂量和大剂量金尔伦(盐酸纳洛酮)对大鼠液压颅脑损伤有明显的治疗效果.     

小儿先心病心电图P波,QRS波时限,振幅与左房和肺动脉压力的相关分析

小儿先心病术后左房夺和肺动脉压力的监测在ＩＣＵ中十分重要。心电图是论断和评价心脏疾患的常用方法。本文分析了３２例小儿先心病手术前后（伴肺动脉高压１６例）６个肢体导联心电图中Ｐ波和ＱＲＳ波时限总和及振幅总和与左房、肺动脉压力的关系。结果表明两者均有良好的相关性（ｒ＝０．８５￣０．８８，ｒ＝０ｍ７４￣０．８０，Ｐ〈０．０１），该法简单、方便，可广泛开展，尤其在术后未放置ＰＡ和ＬＡ管或在ＩＯＵ中已拨除Ｌ