探讨蝙蝠蛾被毛孢菌丝体(Mycelium of Hirsutella hepiali Chen et Shen,MHCS)对代谢综合征的影响及作用机制。首先采用游离脂肪酸与MHCS处理肝细胞,检测自噬相关的LC3、p62水平与脂滴堆积。其次高脂喂养小鼠建立代谢综合征模型,将50周...探讨蝙蝠蛾被毛孢菌丝体(Mycelium of Hirsutella hepiali Chen et Shen,MHCS)对代谢综合征的影响及作用机制。首先采用游离脂肪酸与MHCS处理肝细胞,检测自噬相关的LC3、p62水平与脂滴堆积。其次高脂喂养小鼠建立代谢综合征模型,将50周龄小鼠随机分为:对照组、模型组、给药组。干预至80周龄后每组随机抽取15只小鼠,测量口服葡萄糖耐量、空腹血糖、胰岛素、胰岛素样生长因子(IGF-1)水平,计算胰岛素抵抗指数(IRI);检测肝脏组织中LC3、p62与炎症相关p-NF-κB p65、NF-κB p65、IL-6与CXCL-8水平;观察肝脏内空泡面积、脂滴堆积与纤维化病理改变;其余小鼠继续饲养至110周龄,统计死亡率。结果表明,MHCS显著上调游离脂肪酸处理的肝细胞自噬水平,给药组小鼠口服葡萄糖耐量、胰岛素抵抗显著改善,自噬水平显著增加,炎症显著缓解,肝脏病理改善且生存率显著增高。提示MHCS可能通过激活肝脏自噬,改善小鼠代谢综合征。展开更多
Among 39 species of microbial strains,Rhodococcus sp.AS 4.1147 possessed the ability to selectively acetylate puerarin（1） at C-6 position of the glucosyl moiety.The structure of the acetylated product,6’’-O-acetyl...Among 39 species of microbial strains,Rhodococcus sp.AS 4.1147 possessed the ability to selectively acetylate puerarin（1） at C-6 position of the glucosyl moiety.The structure of the acetylated product,6’’-O-acetylpuerarin（2） was determined by the analysis of MS,NMR spectroscopic data.The isolated yield of 2 was 22.2%.展开更多
桑(Morus alba L.)为桑科(Moraceae)桑属(Morus)落叶乔木,其叶、枝、根(皮)和果均为中国传统中药。桑的药理活性成分主要包括黄酮类、生物碱类、甾类及香豆素类化合物等,具有降血糖、降血脂、降血压、抗氧化、抗炎、抗菌、抗肿瘤和免疫...桑(Morus alba L.)为桑科(Moraceae)桑属(Morus)落叶乔木,其叶、枝、根(皮)和果均为中国传统中药。桑的药理活性成分主要包括黄酮类、生物碱类、甾类及香豆素类化合物等,具有降血糖、降血脂、降血压、抗氧化、抗炎、抗菌、抗肿瘤和免疫调节等药理活性。本文对桑及其主要成分的药理活性、药代动力学以及基于细胞色素P450和转运蛋白的药物相互作用进行综述。展开更多
The sponge-associated fungus Nectria sp.HLS206,which belongs to the order of Hypocreales,was isolated from the marine sponge Gelliodes carnosa collected from the South China Sea.The secondary metabolites of the fungus...The sponge-associated fungus Nectria sp.HLS206,which belongs to the order of Hypocreales,was isolated from the marine sponge Gelliodes carnosa collected from the South China Sea.The secondary metabolites of the fungus were isolated.From the solid cultures,five compounds were purified,which are chalmicrin（1）,hypocrealesate（2）,fucosterol（3）,stigmasterol（4） and β-sitosterol（5）.The structures of the 5 compounds were elucidated by ESI-MS,1D and 2D NMR spectra（COSY,HMQC and HMBC）.To the best of our knowledge,it is the first time compound 1 was isolated from the order of Hypocreales,and the spectral data of compound 2 are also firstly reported.展开更多
文摘探讨蝙蝠蛾被毛孢菌丝体(Mycelium of Hirsutella hepiali Chen et Shen,MHCS)对代谢综合征的影响及作用机制。首先采用游离脂肪酸与MHCS处理肝细胞,检测自噬相关的LC3、p62水平与脂滴堆积。其次高脂喂养小鼠建立代谢综合征模型,将50周龄小鼠随机分为:对照组、模型组、给药组。干预至80周龄后每组随机抽取15只小鼠,测量口服葡萄糖耐量、空腹血糖、胰岛素、胰岛素样生长因子(IGF-1)水平,计算胰岛素抵抗指数(IRI);检测肝脏组织中LC3、p62与炎症相关p-NF-κB p65、NF-κB p65、IL-6与CXCL-8水平;观察肝脏内空泡面积、脂滴堆积与纤维化病理改变;其余小鼠继续饲养至110周龄,统计死亡率。结果表明,MHCS显著上调游离脂肪酸处理的肝细胞自噬水平,给药组小鼠口服葡萄糖耐量、胰岛素抵抗显著改善,自噬水平显著增加,炎症显著缓解,肝脏病理改善且生存率显著增高。提示MHCS可能通过激活肝脏自噬,改善小鼠代谢综合征。
基金supported by Beijing Natural Science Foundation(7143181)Basic Scientific Research Operation Cost of State-leveled Public Welfare Scientific Research Institutions(2013CHX13,2007CHX08)+1 种基金the National Natural Science Foundation of China(No.20602042)the National High Technology Research and Development Program of China(2012AA092104)
基金The Science & Technology Project of Guangdong Province (Grant No. 2011A080403020)the Program for New Century Excellent Talents in University (Grant No. NCET-06-0155)
文摘Among 39 species of microbial strains,Rhodococcus sp.AS 4.1147 possessed the ability to selectively acetylate puerarin（1） at C-6 position of the glucosyl moiety.The structure of the acetylated product,6’’-O-acetylpuerarin（2） was determined by the analysis of MS,NMR spectroscopic data.The isolated yield of 2 was 22.2%.
文摘桑(Morus alba L.)为桑科(Moraceae)桑属(Morus)落叶乔木,其叶、枝、根(皮)和果均为中国传统中药。桑的药理活性成分主要包括黄酮类、生物碱类、甾类及香豆素类化合物等,具有降血糖、降血脂、降血压、抗氧化、抗炎、抗菌、抗肿瘤和免疫调节等药理活性。本文对桑及其主要成分的药理活性、药代动力学以及基于细胞色素P450和转运蛋白的药物相互作用进行综述。
基金National Science and Technology Project of China(Grant No.2009ZX09301-003-4-1)
文摘The sponge-associated fungus Nectria sp.HLS206,which belongs to the order of Hypocreales,was isolated from the marine sponge Gelliodes carnosa collected from the South China Sea.The secondary metabolites of the fungus were isolated.From the solid cultures,five compounds were purified,which are chalmicrin（1）,hypocrealesate（2）,fucosterol（3）,stigmasterol（4） and β-sitosterol（5）.The structures of the 5 compounds were elucidated by ESI-MS,1D and 2D NMR spectra（COSY,HMQC and HMBC）.To the best of our knowledge,it is the first time compound 1 was isolated from the order of Hypocreales,and the spectral data of compound 2 are also firstly reported.
