目的:为药物体外肝代谢研究方法在新药研发中的应用提供参考。方法:以"药物代谢""体外肝代谢""肝微粒体体外温孵法""肝细胞体外温孵法""肝灌流技术""肝组织切片技术""...目的:为药物体外肝代谢研究方法在新药研发中的应用提供参考。方法:以"药物代谢""体外肝代谢""肝微粒体体外温孵法""肝细胞体外温孵法""肝灌流技术""肝组织切片技术""基因重组P_(450)酶系""Drug metabolism""Liver metabolism in vitro""Metabolism of liver microsome in vitro""Liver perfusion technique""Liver biopsy technique""Recombination genetic cytochrome P_(450)"等为关键词,组合查询1996年10月-2017年4月在Pub Med、Web of Science、中国知网、中国生物医学等数据库中的相关文献,对体外肝代谢研究方法进行综述。结果与结论:共检索到相关英文文献220余篇、中文文献750余篇,其中有效文献30篇。常见的体外肝代谢研究方法有肝微粒体体外温孵法、肝细胞体外温孵法、肝灌流技术、肝组织切片技术、基因重组P_(450)酶系等。药物体外肝代谢不能全面反映体内药物的综合代谢情况,与体内的真实代谢情况存在差异,今后需结合体内实验等方法来完善药物在体内外的药物代谢转运研究;目前肝灌流技术和基因重组P_(450)酶系等体外肝代谢研究方法对设备、实验操作成本、数据处理技术等要求较高,其运用和推广仍然受到一定的约束和限制,今后需建立简单、快速、经济、高效的科学技术方法和手段。展开更多
[Objective] This study aimed to investigate the effects of temperature on determination of protein concentration with Coomassie Brilliant Blue method,thus proving advice and guidance for accurate determination of prot...[Objective] This study aimed to investigate the effects of temperature on determination of protein concentration with Coomassie Brilliant Blue method,thus proving advice and guidance for accurate determination of protein concentration.[Method] With Coomassie Brilliant Blue method,the concentrations of different bovine serum albumin samples were determined under different temperatures and incubation time.[Result] According to the standard curve,when the determination range of protein concentration was 0-100 mg/ml,the determined protein concentration was relatively stable after incubation at 20 ℃ for 20-30 min.Furthermore,the determination result of higher protein concentration with Coomassie Brilliant Blue method was less affected by various factors.[Conclusion] In determination of protein concentration with Coomassie Brilliant Blue method,temperature,sample concentration and incubation time were important factors affecting the accuracy of experimental results.展开更多
In order to investigate the effect of temperature on hatching result of fertilized peacock eggs, they were hatched under conditions of varying temperature and constant temperature respectively. The result shows that t...In order to investigate the effect of temperature on hatching result of fertilized peacock eggs, they were hatched under conditions of varying temperature and constant temperature respectively. The result shows that the hatching rate in the varying temperature treatment group (Group Ⅰ) is higher than that in the constant temperature treatment group (Group Ⅱ). It suggests that the varying temperature treatment (high temperature in the early period, medium temperature in the middle period, slightly lower temperature in the late period, and slightly higher temperature in the hulling period) is in line with the optimum temperature variation in the hatching of fertilized peacock eggs, contributing the hatching of fertilized peacock eggs.展开更多
The major population of the veined rapa whelk Rapana venosa (Valenciennes, 1846), which is an important fishery resource, is facing a large decline in China. We studied the effects of incubation temperature (16-34...The major population of the veined rapa whelk Rapana venosa (Valenciennes, 1846), which is an important fishery resource, is facing a large decline in China. We studied the effects of incubation temperature (16-34℃ at salinity 30) and salinity (5-45 at 25℃) on the incubation period and subsequent larval development. In the temperature experiment, the shortest incubation period was 12 days at 34℃, the lower temperature limit was 16~C, the longest mean shell length (1 193+17 pan) occurred at 25℃ and the highest survival rate 72.28%+5.62% was observed at 28℃. In the salinity experiment, the shortest incubation period was 15 days at 25. The salinity tolerance range was 15-40, the longest mean shell length (855-4-9 μm) and the highest survival rate 72.93%~4.85% were both observed at 35. This study demonstrated that, during the egg-mass stage, temperature and salinity regimes influence later growth and survival of larvae. These observations deepen our understanding of the ecology and conservation of natural populations of Rapana venosa.展开更多
文摘目的:为药物体外肝代谢研究方法在新药研发中的应用提供参考。方法:以"药物代谢""体外肝代谢""肝微粒体体外温孵法""肝细胞体外温孵法""肝灌流技术""肝组织切片技术""基因重组P_(450)酶系""Drug metabolism""Liver metabolism in vitro""Metabolism of liver microsome in vitro""Liver perfusion technique""Liver biopsy technique""Recombination genetic cytochrome P_(450)"等为关键词,组合查询1996年10月-2017年4月在Pub Med、Web of Science、中国知网、中国生物医学等数据库中的相关文献,对体外肝代谢研究方法进行综述。结果与结论:共检索到相关英文文献220余篇、中文文献750余篇,其中有效文献30篇。常见的体外肝代谢研究方法有肝微粒体体外温孵法、肝细胞体外温孵法、肝灌流技术、肝组织切片技术、基因重组P_(450)酶系等。药物体外肝代谢不能全面反映体内药物的综合代谢情况,与体内的真实代谢情况存在差异,今后需结合体内实验等方法来完善药物在体内外的药物代谢转运研究;目前肝灌流技术和基因重组P_(450)酶系等体外肝代谢研究方法对设备、实验操作成本、数据处理技术等要求较高,其运用和推广仍然受到一定的约束和限制,今后需建立简单、快速、经济、高效的科学技术方法和手段。
基金Supported by Natural Science Foundation of Jilin Province(201115221)~~
文摘[Objective] This study aimed to investigate the effects of temperature on determination of protein concentration with Coomassie Brilliant Blue method,thus proving advice and guidance for accurate determination of protein concentration.[Method] With Coomassie Brilliant Blue method,the concentrations of different bovine serum albumin samples were determined under different temperatures and incubation time.[Result] According to the standard curve,when the determination range of protein concentration was 0-100 mg/ml,the determined protein concentration was relatively stable after incubation at 20 ℃ for 20-30 min.Furthermore,the determination result of higher protein concentration with Coomassie Brilliant Blue method was less affected by various factors.[Conclusion] In determination of protein concentration with Coomassie Brilliant Blue method,temperature,sample concentration and incubation time were important factors affecting the accuracy of experimental results.
基金Supported by Scientific and Technological Development General Program of Beijing Municipal Education Commission(KM201412448004)~~
文摘In order to investigate the effect of temperature on hatching result of fertilized peacock eggs, they were hatched under conditions of varying temperature and constant temperature respectively. The result shows that the hatching rate in the varying temperature treatment group (Group Ⅰ) is higher than that in the constant temperature treatment group (Group Ⅱ). It suggests that the varying temperature treatment (high temperature in the early period, medium temperature in the middle period, slightly lower temperature in the late period, and slightly higher temperature in the hulling period) is in line with the optimum temperature variation in the hatching of fertilized peacock eggs, contributing the hatching of fertilized peacock eggs.
基金Supported by the National Key Technology Research and Development Program of China(Nos.2011BAD13B01,2011BAD45B01)the Chinese Academy of Science and Government Cooperation Program(No.Y12319101L)the National Marine Public Welfare Research Program of China(No.201305043)
文摘The major population of the veined rapa whelk Rapana venosa (Valenciennes, 1846), which is an important fishery resource, is facing a large decline in China. We studied the effects of incubation temperature (16-34℃ at salinity 30) and salinity (5-45 at 25℃) on the incubation period and subsequent larval development. In the temperature experiment, the shortest incubation period was 12 days at 34℃, the lower temperature limit was 16~C, the longest mean shell length (1 193+17 pan) occurred at 25℃ and the highest survival rate 72.28%+5.62% was observed at 28℃. In the salinity experiment, the shortest incubation period was 15 days at 25. The salinity tolerance range was 15-40, the longest mean shell length (855-4-9 μm) and the highest survival rate 72.93%~4.85% were both observed at 35. This study demonstrated that, during the egg-mass stage, temperature and salinity regimes influence later growth and survival of larvae. These observations deepen our understanding of the ecology and conservation of natural populations of Rapana venosa.