In this study, to explore the radiation protection effects of Lyophyllum Decastes Sing (LDS), a hot distilled-water extract of LDS was orally administered at a dosage of 250mg/kg every other day for a period of 2 we...In this study, to explore the radiation protection effects of Lyophyllum Decastes Sing (LDS), a hot distilled-water extract of LDS was orally administered at a dosage of 250mg/kg every other day for a period of 2 weeks in irradiated mice. An automatic blood cell counter was used to measure white blood cells (lymphocytes, monocyte, and granulocytes) one day before X-ray irradiation, and 3 hours, 12 hours, 24 hours, 3 days, 7 days, 15 days and 30 days after irradiation. The Dunnett test was used to examine statistical significance of differences. The peripheral blood cell counts in the Lyophyllum-administered non-irradiation group revealed an increase in the numbers of ieukocytes, lymphocytes and monocytes. For 2 Gy whole body radiation, a significant statistical difference was found between the X-ray group and the Lyophyllum plus X-ray group in the numbers of leukocytes, lymphocytes and monocytes. The results suggest that Lyophyllum restrains blood cell-count falling after irradiation, which is probably mediated at least in part by hemopoietic function, and NK and LAK activities seems to play a role in preventing secondary irffections associated with irradiation.展开更多
采用层析分离法从食药兼用真菌鹿茸菇(Lyophyllum decastes)的子实体中纯化得到了一种新纤溶酶,采用Edman降解法测定了该酶N-端氨基酸序列。结果显示,鹿茸菇子实体经干燥、粉碎、浸提后获得的含纤溶酶的粗酶液,依次经过盐析、Octyl-Seph...采用层析分离法从食药兼用真菌鹿茸菇(Lyophyllum decastes)的子实体中纯化得到了一种新纤溶酶,采用Edman降解法测定了该酶N-端氨基酸序列。结果显示,鹿茸菇子实体经干燥、粉碎、浸提后获得的含纤溶酶的粗酶液,依次经过盐析、Octyl-Sepharose Fast Flow疏水相互作用层析、SP-Sepharose High Performance离子交换层析和Source 15PHE疏水相互作用层析分离后获得单一组分的纤溶酶,酶比活力达到了4105.78 U/mg,纯化倍数为206.09,酶活力回收率为30.91%。Native-PAGE电泳和SDS-PAGE电泳检测结果均表明,该纤溶酶纯度达到了电泳纯,相对分子量为30.9 kDa。Edman降解法测定纤溶酶的N-端氨基酸序列为:Gly-Ala-Val-Thr-Gln-Cys-Asn-Ala-Pro-Trp-Gly-Leu,经过NCBI数据库比对,该纤溶酶为一种新纤溶酶。本文的研究为纤溶酶的研发提供了新的思路和方法。展开更多
文摘In this study, to explore the radiation protection effects of Lyophyllum Decastes Sing (LDS), a hot distilled-water extract of LDS was orally administered at a dosage of 250mg/kg every other day for a period of 2 weeks in irradiated mice. An automatic blood cell counter was used to measure white blood cells (lymphocytes, monocyte, and granulocytes) one day before X-ray irradiation, and 3 hours, 12 hours, 24 hours, 3 days, 7 days, 15 days and 30 days after irradiation. The Dunnett test was used to examine statistical significance of differences. The peripheral blood cell counts in the Lyophyllum-administered non-irradiation group revealed an increase in the numbers of ieukocytes, lymphocytes and monocytes. For 2 Gy whole body radiation, a significant statistical difference was found between the X-ray group and the Lyophyllum plus X-ray group in the numbers of leukocytes, lymphocytes and monocytes. The results suggest that Lyophyllum restrains blood cell-count falling after irradiation, which is probably mediated at least in part by hemopoietic function, and NK and LAK activities seems to play a role in preventing secondary irffections associated with irradiation.
文摘采用层析分离法从食药兼用真菌鹿茸菇(Lyophyllum decastes)的子实体中纯化得到了一种新纤溶酶,采用Edman降解法测定了该酶N-端氨基酸序列。结果显示,鹿茸菇子实体经干燥、粉碎、浸提后获得的含纤溶酶的粗酶液,依次经过盐析、Octyl-Sepharose Fast Flow疏水相互作用层析、SP-Sepharose High Performance离子交换层析和Source 15PHE疏水相互作用层析分离后获得单一组分的纤溶酶,酶比活力达到了4105.78 U/mg,纯化倍数为206.09,酶活力回收率为30.91%。Native-PAGE电泳和SDS-PAGE电泳检测结果均表明,该纤溶酶纯度达到了电泳纯,相对分子量为30.9 kDa。Edman降解法测定纤溶酶的N-端氨基酸序列为:Gly-Ala-Val-Thr-Gln-Cys-Asn-Ala-Pro-Trp-Gly-Leu,经过NCBI数据库比对,该纤溶酶为一种新纤溶酶。本文的研究为纤溶酶的研发提供了新的思路和方法。