在印度阿育吠陀传统医学中,南非醉茄Withania somnifera Dun.是滋补强壮药,用于防治多种疾病,被称作“印度人参”。该植物中的醉茄素 A 和醉茄内酯 D 具免疫抑制活性。作者研究了该植物根70%乙醇提取物的活性部位 B(BF)的抗应激活性。...在印度阿育吠陀传统医学中,南非醉茄Withania somnifera Dun.是滋补强壮药,用于防治多种疾病,被称作“印度人参”。该植物中的醉茄素 A 和醉茄内酯 D 具免疫抑制活性。作者研究了该植物根70%乙醇提取物的活性部位 B(BF)的抗应激活性。该植物根阴干后磨成粗粉,用70%乙醇渗漉提取10次,提取物再用水提取5次,得到水溶部分,该部位继续分离得4个不含醉茄内酯的次级部位,将次级部位进行耐缺氧和游泳等应激试验,得到活性最强的部位BF,用 BF 进一步作以下研究:对小鼠缺氧时间和游泳时间的影响、对游泳诱导的大鼠胃溃疡的作用。展开更多
To investigate genetic mechanisms of high altitude adaptations of animals living in the Tibetan Plateau, three mitochondrial genomes （mt-genome） of Tibetan horses living in Naqu （4,500 m） of Tibetan, Zhongdian （3...To investigate genetic mechanisms of high altitude adaptations of animals living in the Tibetan Plateau, three mitochondrial genomes （mt-genome） of Tibetan horses living in Naqu （4,500 m） of Tibetan, Zhongdian （3,300 m） and Deqin （3,100 m） of Yunnan province were sequenced. The structures and lengths of these three mt-genomes are similar to the Cheju horse, which is related to Tibetan horses, but little shorter than the Swedish horse. The pair-wise identity of these three horses on nucleotide level is more than 99.3%. When the gene encoding the mitochondrial protein of Tibetan horses was analyzed, we found that NADH6 has higher non-synonymous mutation rate in all of three Tibetan horses. This implies that NADH6 may play a role in Tibetan horses＇ high altitude adaptation. NADH6 is one of the subunits of the complex I in the respiratory chain. Furthermore, 7 D-loop sequences of Tibetan horse from different areas were sequenced, and the phylogeny tree was constructed to study the origin and evolutionary history of Tibetan horses. The result showed that the genetic diverse was high among Tibetan horses. All of Tibetan horses from Naqu were clustered into one clade, and Tibetan horses from Zhongdian and Deqin were clustered into others clades. The first molecular evidence of Tibetan horses indicated in this study is that Tibetan horse population might have multiple origins.展开更多
基金Tianjin Science and Technology Plan Project:Study on the action mechanism of Traditional Chinese Medicine against new coronavirus(Omicron)(22ZXGBSY00020)2022 Chinese Medicine Clinical Efficacy Improvement Project of the State Administration of Traditional Chinese Medicine.
文摘在印度阿育吠陀传统医学中,南非醉茄Withania somnifera Dun.是滋补强壮药,用于防治多种疾病,被称作“印度人参”。该植物中的醉茄素 A 和醉茄内酯 D 具免疫抑制活性。作者研究了该植物根70%乙醇提取物的活性部位 B(BF)的抗应激活性。该植物根阴干后磨成粗粉,用70%乙醇渗漉提取10次,提取物再用水提取5次,得到水溶部分,该部位继续分离得4个不含醉茄内酯的次级部位,将次级部位进行耐缺氧和游泳等应激试验,得到活性最强的部位BF,用 BF 进一步作以下研究:对小鼠缺氧时间和游泳时间的影响、对游泳诱导的大鼠胃溃疡的作用。
基金This work was supported by a grant from Special Foundation of President of the Chinese Academy of Sciences & the Grant of Sub-project of National Basic Research Program of China (No. 2006CB504103).
文摘To investigate genetic mechanisms of high altitude adaptations of animals living in the Tibetan Plateau, three mitochondrial genomes （mt-genome） of Tibetan horses living in Naqu （4,500 m） of Tibetan, Zhongdian （3,300 m） and Deqin （3,100 m） of Yunnan province were sequenced. The structures and lengths of these three mt-genomes are similar to the Cheju horse, which is related to Tibetan horses, but little shorter than the Swedish horse. The pair-wise identity of these three horses on nucleotide level is more than 99.3%. When the gene encoding the mitochondrial protein of Tibetan horses was analyzed, we found that NADH6 has higher non-synonymous mutation rate in all of three Tibetan horses. This implies that NADH6 may play a role in Tibetan horses＇ high altitude adaptation. NADH6 is one of the subunits of the complex I in the respiratory chain. Furthermore, 7 D-loop sequences of Tibetan horse from different areas were sequenced, and the phylogeny tree was constructed to study the origin and evolutionary history of Tibetan horses. The result showed that the genetic diverse was high among Tibetan horses. All of Tibetan horses from Naqu were clustered into one clade, and Tibetan horses from Zhongdian and Deqin were clustered into others clades. The first molecular evidence of Tibetan horses indicated in this study is that Tibetan horse population might have multiple origins.
