Tourette综合征的神经心理和血浆催乳素含量及其关系的初步研究

本研究采用中国修订的韦氏儿童智力量表（ＷＩＳＣ－ＣＲ）、韦氏儿童记忆量表（ＷＭＳＣ－ＣＲ），艾森克个性问卷（ＥＰＱ）和Ａｃｈｅｎｂａｃｈ儿童行为量表（ＡＣＢＣ），对３９例（未用药组２２例，用药组１７例）７～１４岁Ｔｏｕｒｅｔｔｅ综合征（ＴＳ）患儿进行测试，同时采用放射免疫方法测定其血浆催乳素（ＰＲＬ）含量，并与１８例正常对照组比较。结果表明：ＴＳ患儿智力测验和记忆测验中的背数、译码和视觉再生分测验量表分低于对照组。其个性测验中的神经质（Ｎ）和精神质（Ｐ）量表Ｔ分高于对照组，掩饰性（Ｌ）量表Ｔ分低于对照组。其ＡＣＢＣ总分高于对照组。用药组的记忆商（ＭＱ）、理解记忆和累加分测验量表分低于未用药组，ＴＳ患儿的血浆催乳素含量高于对照组。相关分析表明血浆催乳素含量与ＡＣＢＣ总分和精神抑制药物如氟哌啶醇和泰必利等因素有关。我们的初步研究提示ＴＳ患儿存在不同程度的神经心理缺陷，催乳素可能参与ＴＳ发病过程，氟哌啶醇和泰必利等精神抑制药物可能对ＴＳ患儿的记忆功能有影响以及可以导致血浆催乳素分泌增加，为ＴＳ的防治干预提供了一定的理论依据。     

抗病毒剂研究──Ⅳ．6－氨基－9－（N~4′－芳香基取代乙醛缩氨基硫脲）嘌呤衍生物的合成

合成了６个６－氨基－９－（Ｎ~４′－芳香基取代乙醛缩氨基硫脲）嘌呤衍生物，并进行了抗核型多角体病毒（ＮＰＶ）活性实验。结果显示该类化合物对ＮＰＶ的抑制活性可达６７％。     

消毒剂敌菲特的研究

经全面考察研究,敌菲特缓释消毒灭菌剂具有良好的消毒灭菌效果,对细菌繁殖体、病毒和细菌芽孢均可完全灭活;即使在—20℃低温条件下,对枯黑变种芽孢仍具很好的杀灭效果。此外,该消毒剂基本克服了氯制剂对金属腐蚀性的缺陷;原药性能基本稳定。     

Dose fractionation of radiolabeled antibodies in patients with metastatic colon cancer.

Twelve patients with metastatic colon cancer were treated with 131I-chimeric B72.3 (IgG-4) at total doses of 28 or 36 mCi/m2 in two or three weekly fractions. Bone marrow suppression was the only significant side effect. The degree of bone marrow suppression adjusted for whole-body dose was modestly but statistically significantly (p = 0.04) less than that seen with identical doses given as a single infusion for the total dose of 36 mCi/m2. Nine of twelve patients developed an antibody response to ch B72.3, which altered the kinetics of radiolabeled antibody in four patients given a second course of therapy. One patient had a minor response that lasted 4 mo. Fractionation of this particular radiolabeled antibody at the dose schedule used produced a modest increase in the therapeutic window in regard to administered dose.     

Link protein shows species variation in its susceptibility to proteolysis.

Human cartilage link protein exists as three native components, while equine, bovine, and porcine cartilage link protein exist as two and Swarm rat chondrosarcoma link protein exists as only one component. These nonhuman link protein components represent intact protein structures, and there is little evidence for proteolytically modified forms in nonhuman tissues. In human cartilage, the proteolytic production of modified link proteins increases with age, whereas high amounts of such products were not seen in the nonhuman tissues. However, the small amounts of link protein fragments that were observed in the nonhuman cartilages were of a similar size to their human counterparts. On digestion of human proteoglycan aggregate with stromelysin, rapid modification of the link protein components occurred, whereas the aggregates from nonhuman cartilages showed incomplete cleavage of their link protein components. The relative resistance of nonhuman link protein to stromelysin may in part be due to a unique amino acid substitution present near the enzymic cleave site.     

血清Ⅳ型胶原对肝纤维化诊断价值的研究

对３２例肝硬化（ＬＣ），２３例慢性活动性肝炎（ＣＡＨ），２１例慢性迁延性肝炎（ＣＰＨ），１６例非肝病（ＮＨＤ）和３０例正常对照者采用一步夹心酶免疫法测定了血清Ⅳ型胶原（Ⅳ－Ｃ）水平。结果表明，慢性肝病组血清Ⅳ－Ｃ水平显著高于正常对照组（Ｐ＜０．０２），ＬＣ及ＣＡＨ患者血清Ⅳ－Ｃ水平显著高于ＣＰＨ患者，以活动性肝硬化患者最高。在轻度肝纤维化时Ⅳ－Ｃ阳性率明显高于血清Ⅲ型前胶原及单胺氧化酶。血清Ⅳ－Ｃ含量与肝纤维化、肝内炎症、坏死程度及肝窦壁Ⅳ－Ｃ免疫组化染色反应强度显著相关。提示血清Ⅳ－Ｃ不仅是诊断早期肝纤维化的重要指标，而且能反映肝窦毛细血管化程度。     

茶碱和双丁酰-cAMP对巨噬细胞水解酶影响的细胞化学观察

本文通过细胞体外培养,细胞化学定量分析等方法,观察了茶碱和双丁酰-cAMP对C_(57)BL/6J小鼠腹腔巨噬细胞酸性磷酸酶、α-醋酸萘酚酯酶的作用和影响.卡介苗活化的巨噬细胞与固有巨噬细胞相比,其酸性磷酸酶、α-醋酸萘酚酯酶活性明显升高.卡介苗活化的巨噬细胞在茶碱或双丁酰-cAMP作用下。酸性磷酸酶、α-醋酸萘酚酯酶活性明显受到抑制.茶碱或双丁酰-cAMP对固有巨噬细胞的酸性磷酸酶、α-醋酸萘酚酯酶无抑制作用.     

Effect of Cycloheximide on the Adaptive Response Induced by Low Dose Radiation

Human lymphocytes pre-exposed to 10 mGy or 50mGy of X-rays become less sensitive to subsequent large dose irradiation,exhibited lower rate of chromosome aberration than expected.This adaptive response could be inhibited by cycloheximide,a protein synthesis inhibitor for successive 2h period ranging from 0.5h before to 4h after the low dose exposure,indicating that the adaptive response was directly related with the protein synthesis.