抗癌及癌化学预防药物的研究:3-乙酰香豆素衍生物的合成及其抗致突活性与结构间的关系

合成了25个3-乙酰香豆素衍生物,其中22个未见报道。体外抗致突活性筛选表明其中部分化合物有不同程度的抗致突活性,并对5,7,8位取代的结构与活性间的关系进行了初步的分析。     

Humoral immunoreactivity to gliadin and to tissue transglutaminase is present in some patients with multiple myeloma

Background

Multiple myeloma (MM) is a clonal B-cell disorder with many immunological disturbances. The aim of this work was to assess whether some of food antigens contribute to the imbalance of immune response by screening the sera of MM patients for their immunoreactivity to food constituent gliadin, to tissue transglutaminase-2 (tTG-2) and to Ro/SSA antigen. Sera from 61 patients with MM in various stages of disease, before, or after some cycles of conventional therapy were analyzed by commercial Binding Site ELISA tests. The control group consisted of 50 healthy volunteers. Statistical analysis of data obtained was performed by Mann Whitney Test.

Results

The higher serum IgA immunoreactivity to gliadin was found in 14/56 patients and in one of control people. The enhanced serum IgG immunoreactivity to gliadin was found in only two of tested patients and in two controls. The enhanced IgA immunoreactivity to tTG-2 was found in 10/49 patients' sera, while 4/45 patients had higher serum IgG immunoreactivity. The enhanced serum IgG immunoreactivity to RoSSÀ antigen was found in 9/47 analyzed MM patients' sera. Statistical analysis of data obtained revealed that only the levels of anti-tTG-2 IgA immunoreactivity in patients with MM were significantly higher than these obtained in healthy controls (P < 0.02)

Conclusion

Data obtained showed the existence of the enhanced serum immunoreactivity to gliadin, tTG-2 and Ro/SSA antigens in some patients with MM. These at least partially could contribute to the immunological imbalance frequently found in this disease.     

缩血管活性因子内皮素在缺血性心脏病中的作用及中医药干预效应

目的:总结内皮素在缺血性心脏病中的病理生理意义。方法:应用计算机检索维普、万方和中文生物医学期刊(光盘)数据库2000-01/2006-12相关缺血性心脏病及内皮素方面的文献,检索词“缺血性心脏病,内皮素”,限定文献语言种类为中文。同时计算机检索Medline数据库2000-01/2006-12相关缺血性心脏病及内皮素方面的文献,检索词“ischemic heart disease,endothelin”,限定文献语言种类为English。对资料进行初审,选取包括缺血性心脏病及内皮素方面的文献,开始查找全文。纳入标准:内皮素在缺血性心脏病中的作用及中医药的干预效应。排除标准:内皮素在其他疾病中的作用。结果:共检索到200余篇关于缺血性心脏病及内皮素方面的文献,最终纳入29篇符合标准的文献。内皮素是极强的缩血管活性因子,在缺血性心脏病中具有重要的病理生理意义,中医药从缺血性心脏病的发病机制及病理环节着手,进行干预,大量研究资料表明,中医药在保护内皮细胞功能、治疗缺血性心脏病方面疗效肯定,在目前寻找和研究新型有效的内皮素受体拮抗剂具有广阔的发展前景。结论:内皮素在心血管疾病中具有重要意义,但其治疗缺血性心脏病保护内皮功能的具体机制还有待进一步探讨。