复方治疗慢性肾衰海洋新药的初步研究

该论文在褐藻多糖硫酸酯已有研究工作的基础上,参考中药治肾病领域有关文献,结合中医药理论,组方成治疗慢性肾衰复方海洋新药-复方褐藻多糖硫酸酯,并进行了复方褐藻多糖硫酸酯的部分药学、初步药效学和急性毒性试验的研究.

Evaluation of bioeffects of a long-term administering ChangLe on rat by proton NMR method and biochemical examination

High resolution H-1 nuclear magnetic resonance ( NMR) spectroscopy has been employed to assess long-term toxicological effects of ChangLe (a kind of rare earth complex applied in agriculture). Male Wistar rats were administrated orally with ChangLe at doses of 0, 0.1, 0.2, 2.0, 10 and 20 mg/kg body weight daily, respectively, for 6 months. Urine was collected at-day 30, 60, go and serum samples were taken after 6 months. Many low-molecular weight metabolites were identified by H-1 NMR spectra of rat urine. A decrease in citrate and an increase in ketone bodies, creatinine, DMA, DMG, TMAO, and taurine in the urine of the rats. receiving high doses were found by H-1 NMR spectra. These may mean that high-dosage of ChangLe impairs the specific region of liver and kidney, such as renal tubule and mitochondria. The decrease in citrate and the increase in succinate and alpha-ketoglutarate were attributed to a combination of the inhibition of certain citric acid enzymes, renal tubular acidosis and the abnormal fatty acid catabolism. The information of the renal capillary necrosis could be derived from the increase in DMIA, DMG and TMAO. The increase in taurine was due to hepatic mitochondria dysfunction. The conclusions were supported by the results of biochemical measure. merits and enzymatic assay.

治疗慢性肾功能衰竭的海洋复方新药初步研究

本论文在FPS研究的基础上，结合中医配伍理论，研究将FPS与几味传统中药－大黄、黄芪、泽泻、益母草的提取物组合成治疗慢性肾功能衰竭的海洋复方新药物。由于FPS研究相对成熟，故对复方药物中FPS外其它组分（以下简称复方）的提取、分离工艺以及制定复方质量的标准和检测方法等药学内容进行研究，为下一步新药的开发打下基础。 1. 对复方的醇提与水提进行了比较，确定了复方最佳提取方法－醇提。采用正交实验设计方法对醇提工艺进行优化，以复方中主要有效成分的含量为指标进行综合评价，得到了复方提取的最佳工艺：8倍量95％乙醇回流提取两次，1.5h/次，并对该提取工艺进行了验证实验，结果表明本工艺提取物中各主要有效成分的含量均较高，是可靠可行的。 2. 采用微波水提法，对复方中的单味药－黄芪的主要有效成分黄芪皂苷的提取进行了研究，通过正交实验设计方法优选出了最佳提取工艺为20倍量水、微波功率800 W、对60目黄芪提取两次、15 min/次。将该工艺与传统乙醇回流提取方法进行了对比，结果表明该工艺快速、经济、有较好的皂苷提取率，是黄芪皂苷提取的很好的方法。 3. 进行缺FPS的褐藻糖含量测定阴性对照实验，结果阴性无干扰，褐藻糖含量测定可以作为控制复方质量的一个指标。分别做缺大黄和缺黄芪阴性对照实验，结果总蒽醌和总皂苷含量测定阴性干扰较大，大黄素含量测定阴性无干扰，确定大黄素含量测定为控制复方质量的另一指标。 4. 进行复方提取物质量控制指标之一－大黄素含量测定的分析方法学研究，找到了一稳定可行的方法－HPLC方法，该方法测定条件为：流动相甲醇与0.1%磷酸比例为85：15，柱温40℃，通过ODS柱分离，用二极管阵列检测器在436 nm下测定含量。该方法测定复方提取物中大黄素含量精密度高、专一性好、干扰小，可用来控制复方的质量。