白细胞介素—1和阿片肽促进大鼠大脑皮层神经细…

对白细胞介素－１（ＩＬ－１）、脑啡肽、β－内啡肽及即刻早期基因ｃ－ｆｏｓ、ｃ－ｊｕｎ与癫痫发病机理的研究。结果显示ＩＬ－１、ＩＬ－１受体拮抗剂、β－内啡肽、抗β－内啡肽抗血清、亮－脑啡肽（ＬＥ）均能促进大脑皮层神经细胞ｃ－ｆｏｓ、ｃ－ｊｕｎ ｍＲＮＡ表达，但ＩＬ－１受体拮抗剂、抗β－内啡肽抗血清促ｃ－ｆｏｓ、ｃ－ｊｕｎ ｍＲＮＡ表达量明显低于ＩＬ－１、ＬＥ及β－内啡肽的作用，并能部分抑制后者的作用     

IL-6、IL-1β、TNFα对人胎大脑神经细胞c-fos、c-jun的表达调控

目的：探讨ＩＬ－６、ＩＬ－１β、ＴＮＦα在大脑神经细胞体外发育过程中对原癌基因ｃ－ｆｏｓ、ｃ－ｊｕｎ的表达调控规律。方法：应用人胎大脑神经细胞无血清原代培养模型。通过ＤＮＡ－ＲＮＡ斑点杂交,采用计算机图像分析系统测定杂交点的平均灰度值。结果：ｃ－ｆｏｓ、ｃ－ｊｕｎ的表达均在ＩＬ－６、ＩＬ－１β、ＴＮＦα作用后１５～３０ｍｉｎ开始上调,１ｈ达高峰,而后下降。结论：这些细胞因子均在转录水平上促进神经细胞ｃ－ｆｏｓ、ｃ－ｊｕｎ的表达。为分析其生物学效应的分子机制奠定基础。     

白细胞介素6诱导小鼠T细胞杂交瘤细胞c－fos基因表达

本文应用Ｎｏｒｔｈｅｒｎｂｌｏｔ和斑点杂交技术，观察了ｒＩＬ－６对ＩＬ－６依赖株小鼠Ｔ细胞杂交瘤细胞ＭＨ６０的ｃ－ｆｏｓ基因表达的诱导作用。结果表明：ｒＩＬ－６可明显诱导ＭＨ６０细胞ｃ－ｆｏｓ基因表达，具有剂量效应关系，且表达程度与ＩＬ－６刺激ＭＨ６０细胞增殖速率相平行，提示ＩＬ－６促肿瘤细胞分裂增殖效应是由活化ｃ－ｆｏｓ基因所介导的。     

白细胞介素—1与阿片肽在大鼠大脑皮层细胞中的相互作用

白细胞介素－１（ＩＬ－１）及阿片肽作为免疫与神经系统之间调节的介质与中枢神经系统生理及病理生理的变化密切相关，我们探讨了ＩＬ－１和阿片肽在培养在大鼠脑皮层神经细胞中的相互作用。结果表明，ＩＬ－１β明显促进大脑皮层细胞前脑啡肽原ｍＲＮＡ表达及亮脑啡肽分泌增加，对β－内啡肽分泌有一定影响，ＩＬ－１受体拮抗剂能抑制ＩＬ－１的作用，亮脑啡肽不能促进大脑皮层神经细胞ＩＬ－１βｍＲＮＡ表达及ＩＬ－１活性改变。     

白细胞介素－1与阿片肽在大鼠大脑皮层细胞中的相互作用

白细胞介素－１（ＩＬ－１）及阿片肽作为免疫与神经系统之间调节的介质与中枢神经系统生理及病理生理的变化密切相关。我们探讨了ＩＬ－１和阿片肽在培养的大鼠脑皮层神经细胞中的相互作用。结果表明，ＩＬ－１β明显促进大脑皮层细胞前脑啡肽原ｍＲＮＡ表达及亮脑啡肽分泌增加；对β－内啡肽分泌有一定影响；ＩＬ－１受体拮抗剂能抑制ＩＬ－１的作用；亮脑啡肽不能促进大脑皮层神经细胞ＩＬ－１βｍＲＮＡ表达及ＩＬ－１活性改变。提示在大脑皮层神经细胞中，ＩＬ－１和阿片肽间仅存在单向作用，ＩＬ－１对中枢神经系统的部分作用可能依赖于阿片肽的神经调节作用。     

bax和c—fos基因在肝癌及肝硬变细胞中的表达

本实验用免疫组化技术ＡＢＣ法,测定了肝几肝硬化细胞中的ｂａｘ和ｃ－ｆｏｓ蛋白。结果表明：癌组的ｂａｘ和ｃ－ｆｏｓ基因表达均显著增高,提示,ｃ－ｆｏｓ基因激活,导致肝癌的发生,同时,促细胞凋亡基因ｂａｘ表达增强,细胞凋亡剧烈。     

食管癌及癌旁组织中EGR-1、c-fos、cyclin D1的表达

目的：研究ＥＧＲ－１、ｃ－ｆｏｓ、ｃｙｃｌｉｎＤ１３种基因ｍＲＮＡ及其相应蛋白在人食管癌癌变过程中的表达水平及其相关性,并探讨其与食管癌的发生、发展及生物学行为的关系。方法：原位杂交法检测４７例食管鳞状细胞癌及其癌旁、上切缘中３种基因的ｍＲＮＡ、免疫组化ＳＡＢＣ法检测蛋白表达水平。结果：３种基因原位杂交、免疫 化阳性表达产物均分别定位于胞浆及胞核中,ＥＧＲ－１ｍＲＮＡ、ｃｆｏｓｍＲＮＡ、ｃｙｃｌｉ     

白细胞介素6诱导小鼠T细胞杂交瘤细胞c—fos基因表达

本文应用Ｎｏｒｔｈｅｒｎ ｂｌｏｔ和斑点杂交技术，观察了ｒＩＬ－６对ＩＬ－６依赖株小鼠Ｔ细胞杂交瘤细胞ＭＨ６０的ｃ－ｆｏｓ基因表达的诱导作用。结果表明：ｒＩＬ－６可明显诱导ＭＨ６０细胞ｃ－ｆｏｓ基因表达，具有剂量效应关系。且表达程度与ＩＬ－Ｔ刺激ＭＨ６０细胞增殖速率相平行。提示ＩＬ－６促肿瘤瘤细胞分裂增殖效庆是由活化ｃ－ｆｏｓ基因所介导的。     

红藻氨酸致大鼠脊髓损伤过程中c—fos mRNA和Fos的表达变化

为探讨即早反应基因在神经损伤过程中的变化规律，用原位分子杂交和ＰＡＰ免疫组织化学方法观察了大鼠脊髓内注射红藻氨酸后１ｈ至１４ｄ的不同时间点，Ｌ１－３脊髓腹，背角神经元中ｃ－ｆｏｓ ｍＲＮＡ和Ｆｏｓ免疫阳性信号的变化。结果表明，ＫＡ致脊髓损伤后２－８ｈ脊髓腹角运动神经元中ｃ－ｆｏｓ ｍＲＮＡ的表达和Ｆｏｓ免疫组织化学阳性反应明显增加，１２ｈ恢复至正常水平，伤后３ｄ又明显增强；而脊髓背角神经元内仅在伤     

SOMAN诱发惊厥后c—fos在大鼠杏仁核簇一氧化氮神经元中的表达

运用ＦＯＳ免疫组化结合ＮＡＤＰＨ－ｄ组化双重标记技术，研究了ｓｏｍａｎ诱发惊厥大鼠杏仁核内ｃ－ｆｏｓ高表达神经地与ＮＡＤＰＨ－ｄ阳性神经元之间的关系。结果显示；在ｓｏｍａｎ诱发惊后的１．５和４８ｈ，杏仁核族凤ｃ－ｆｏｓ呈现持纽过度表达。ＦＯＳ免疫阳性神经元的分布具有显著的亚核定位特征。     

CELLULAR KINETIC AND PHENOTYPIC HETEROGENEITY IN AND AMONG BURKITT'S AND BURKITT-LIKE LYMPHOMAS

This study asks whether the known genotypic heterogeneity within and between endemic or sporadic Burkitt's lymphomas (eBLs and sBLs, n=10 each), and Burkitt-like lymphomas (BLLs, n-12), is reflected in divergent cytokinetics and related immunophenotypes. There was strong evidence that eBL and BLL grow markedly faster than sBL, as shown by differences in mitotic and apoptotic indices. Furthermore, in BLL, the median percentage of neoplastic cells immunoreactive for the bcl-2 protein was much higher than that observed in eBL and sBL. The reverse was true for the median fraction of cells containing c-myc protein. In eBL and sBL, the median fraction of bcl-6 protein-positive cells reached values above 50 per cent, while cells of 8/12 BLLs did not contain detectable amounts of this protein. This observation indicates that in this respect, eBL and sBL resemble normal germinal centres of lymphatic tissue much more than do BLL. Evidence for infection of neoplastic cells by the Epstein-Barr virus (EBV) was observed in 9/10 cases of eBL and in 3/10 of sBL, but not in BLL. EBV-positive lymphomas were associated with distinctly lower apoptotic indices and smaller median percentages of bcl-6-positive cells than EBV-negative tumours. © 1997 John Wiley & Sons, Ltd.     

VIRAL AND CHEMICAL LEUKEMOGENESIS AND HOST CONDITIONING

To clarify the pathogenesis of murine leukemia of viral and chemical origin, it is necessary to consider certain fundamental observations on host conditioning factors which appear to be responsible for determining the type of leukemia developed and the age of leukemia occurrence. In this short survey the author will present the data of experiments in our laboratory dealing with Gross leukemia in mice and chemical-induced leukemia in mice and rats.     

RACE AND COLOUR IN INTERNAL AND EXTERNAL REALITY

To understand the psychological origins and impact of racism, two assumptions are proposed. The first is that racism develops out of internal paranoid schizoid splits. The second relates to the manner in which these splits are organized. The history of racial exploitation provides powerful projection highways that can be used to maintain these internal splits. Reciprocal projective identification between internal and external white part-objects and internal and external black part-objects locates desirable aspects of the self in white objects and undesirable aspects in black objects. Some of the resulting complex defences and identifications are illustrated using case material.     

PERSONALITY AND RESPIRATORY RESPONSES TO SOUND AND LIGHT

Respiratory amplitude (RA) and respiratory rate (RR) parameters were examined in student subjects (Ss) following stimulation with five intensities of sound and five intensities of light. All Ss completed the MMPI and were then divided into high and low ego strength (Es) groups on the basis of their scores on the Barron scale. These groups were balanced for alertness-drowsiness by EEG criteria. High Es Ss responded with a greater increase in RA than low Es Ss and there was a strong trend for high Es Ss to respond less than low Es Ss in RR. Both RA and RR increased following stimulation with the greatest changes following greater intensities of stimulation in both modalities. Light induced a greater increase in RA and RR than sound.     

人胎肺细胞增殖与凋亡及其与发育分化的关系

用原位核酸末端杂交和免疫细胞化学技术,分别观察28例16～32周人胎肺组织不同发育阶段的增殖与凋亡的表达特征。实验结果表明:支气管粘膜上皮细胞在胎肺发育的早、中期(即假腺期和小管期),细胞的凋亡与增殖均明显较晚期旺盛,而且两者均于胎肺发育的小管期达到最高峰;但凋亡与增殖细胞在不同发育时期各有不同的定位,提示细胞的凋亡与增殖行为在胎肺管腔发生及分支延伸过程中有不同作用。     

桡,尺动脉肌,皮支的解剖学研究

目的:为手外科提供桡、尺动脉分出的肌、皮支.材料和方法:用福尔马林常规固定的成尸上肢69(男61,女8)侧,解剖观测桡、尺动脉分支的部位、支数及外径.主要结果:从尺、桡动脉壁两侧发出分支,大部分为不对称性分支间距不等,平均(3.0～15.0)mm.桡动脉平均分出15.8支,其中肌支10.3支,筋膜皮支5.5支.尺动脉平均分出12.4支,其中肌支7.6支,筋膜皮支4.8支.结论:桡、尺动脉分出肌、皮支,皮支为前臂筋膜瓣、皮瓣的血管蒂.