中文摘要：

核磁共振（NMR）波谱法是一种表征分子结构、组成变化的有效手段,能够得到生物组织中的核酸、蛋白质、脂类和糖类等生物大分子的含量、分子的空间排列和结构特征等信息,可以从分子水平上研究肿瘤与对照组织之间的差别,更深入地揭示肿瘤的发生、发展中产生的各种分子水平变化。文章对9例直肠癌组织及癌旁正常组织进行了核磁共振氢谱的测定。结果表明,直肠正常和癌变组织的核磁共振氢谱存在显著的差异,这可以通过对谱图特征峰区域积分面积相对比值的差别看出来。直肠正常组织核磁共振氢谱中A0.9/A3.0,A1.3/A3.0,A2.0/A3.0,A1.3/A0.9及A4.1/A3.0值较相应的癌组织偏大,直肠癌组织核磁共振氢谱中A3.2/A3.0值较相应正常直肠组织偏大。通过这些差异核磁共振氢谱技术有可能发展成为早期诊断直肠癌组织的一种方法。

英文摘要：

Cancer is one of the most serious diseases, a threat to human body＇s health and a causes of death. The early diagnosis of cancer and timely therapy is significant for improving the survival. Owing to the complexity and limit of conventional medical diagnosis, misdiagnosis of ten occurs in many cases. NMR spectroscopy is an effective technique for characterizing molecular structure and component changes. The component and structural information of nucleic acid, protein, lipid and glucide in the biologic tissues can also be distinguished from NMR data. In the present paper, a new method was developed for the diagnosis of tumor using the advanced physical chemistry （NMR） and biomedicine technique. Nine rectum tissue samples and their corresponding normal tissues of rectum were measured using NMR spectroscopy. Each tissue sample obtained from the operation was quickly separated into two parts averagely： one was dipped into 10% formalin solution and prepared for conventional pathological examination; the other was preserved in liquid nitrogen for further NMR detection. Before NMR detection, the corresponding sample was thawed at room temperature and was dipped into 0. 5 mL D2O. Dioxane was used as external reference. The obtained NMR spectra were analyzed and compared by OMNIC5.0^TM and SPSS 11. 0^TM Software. The differences of metabolite in the tissues samples were studied and a method for the diagnosis of cancer using NMR data was initially explored. The result indicates that the ^1H NMR spectra of rectum cancer tissues are significantly different from those of their corresponding normal rectum tissues. This is shown by the differences in the integral area ratio at characteristic peak region. A0. 9/A3.0, A1.3/A3.0, A2. 0/ A3.0, A1.3/A0.9 and A4. 1/A3. 0 of the normal rectum tissues are higher than those of their corresponding cancer tissues, but A3.2/A3.0 is lower than that of the rectum cancer tissues. From the above result it is concluded that the concentration of fatty acid, inositol and lactate is lower