A simple, sensible and reliable HPLC-DAD fingerprint analysis method for the raw materials of Oxytropisfalcata and Oxytropis chiliophylla, both of which were used as ＂Er-Da-Xia＂ in Tibetan medicines, was developed a...A simple, sensible and reliable HPLC-DAD fingerprint analysis method for the raw materials of Oxytropisfalcata and Oxytropis chiliophylla, both of which were used as ＂Er-Da-Xia＂ in Tibetan medicines, was developed and then subsequently applied to analyze samples collected from different locations or times. 19 common fingerprint peaks for O. falcata, 24 for O. chiliophylla, and 11 for the two herbs were designated respectively, including 7 identified characteristic peaks existing in both herbs and 1 uniquely presenting in O. chiliophylla. Although there were some slight differences in the chemicals of O. falcata and O. chiliophylla, the main components of both herbs were consistent generally. The results provided scientific basis, at least from the chemical point of view, for the reasonablity of two herbs being used as the same drug in Tibetan medicines and for the necessary of further investigation on their detailed chemical and pharmacological differences.展开更多
Dear Editor,High-yield,high-quality,and stress-tolerant forage crops are crucial for the sustainable development of grass-based livestock husbandry.Medicago species are among the most important legume forage crops wor...Dear Editor,High-yield,high-quality,and stress-tolerant forage crops are crucial for the sustainable development of grass-based livestock husbandry.Medicago species are among the most important legume forage crops worldwide.Alfalfa(Medicago sativa subsp.sativa,M.sativa ssp.sativa),a crop known as the“Queen of the Forages”,has high biomass productivity,high nutritional value,and good adaptability.展开更多
目的探讨藏药莪达夏(OFB)对低氧性肺动脉高压(HPH)的干预作用及机制。方法选取130~150 g SPF级雄性SD大鼠60只,按照随机数字表法将其分为空白组、造模组、红景天组、低剂量组、中剂量组、高剂量组,每组10只。空白组大鼠饲养于青海大学SP...目的探讨藏药莪达夏(OFB)对低氧性肺动脉高压(HPH)的干预作用及机制。方法选取130~150 g SPF级雄性SD大鼠60只,按照随机数字表法将其分为空白组、造模组、红景天组、低剂量组、中剂量组、高剂量组,每组10只。空白组大鼠饲养于青海大学SPF级实验动物房,其余5组大鼠饲养于青海大学低压氧舱构建HPH模型;红景天组灌胃红景天醇提物200 mg/(kg·d),低、中、高剂量组分别灌胃OFB醇提物100、200、400 mg/(kg·d),空白组及造模组灌胃生理盐水,持续4周。比较各组大鼠右心室收缩压(RVSP)及右心肥厚指数(RVHI);评估各组大鼠肺动脉重塑程度;Western blot法及RT-qPCR检测各组大鼠葡萄糖-6-磷酸脱氢酶(G6PD)蛋白和mRNA表达;免疫组织化学染色法观察大鼠肺组织G6PD含量及分布;观察各组大鼠血清G6PD水平及肺组织NADP+/NADPH、总谷胱甘肽/氧化型谷胱甘肽(T-GSH/GSSG)、NADPH氧化酶(NOX)变化。结果造模组RVSP、RVHI高于空白组(P<0.05);低、中、高剂量组RVSP、RVHI低于造模组(P<0.05);中剂量组RVSP高于低剂量组(P<0.05);高剂量组RVSP低于中剂量组,RVHI高于中剂量组(P<0.05)。造模组血管壁面积占总血管面积的百分比(WA%)、血管壁厚度占血管外径的百分率(WT%)高于空白组(P<0.05);低、中、高剂量组WA%低于造模组(P<0.05),中剂量组WT%低于造模组(P<0.05);中剂量组WA%、WT%低于低剂量组(P<0.05)。造模组肺泡周围小血管G6PD阳性面积占比低于空白组(P<0.05);低、中、高剂量组肺泡周围小血管G6PD阳性面积占比低于造模组(P<0.05);高剂量组肺泡周围小血管G6PD阳性面积占比高于低剂量组(P<0.05)。造模组G6PD蛋白和mRNA表达低于空白组(P<0.05);低、中、高G6PD蛋白和mRNA表达低于造模组(P<0.05)。低剂量组肺组织NOX活力低于造模组(P<0.05);中剂量组血清G6PD及肺组织T-GSH/GSSG水平低于造模组(P<0.05);中剂量组血清G6PD水平低于低剂量组(P<0.05);高剂量组肺组织NADP+/NADPH、T-GSH/GSSG水平及NOX活力低于造模组(P<0.05)。结论400 mg/kg浓度OFB醇提物干预HPH效果最佳,其作用机制可能与下调G6PD减少磷酸戊糖途径下游信号传导有关。展开更多
基金National Natural Science Foundation of China (Grant No.21372015 and 20872006)
文摘A simple, sensible and reliable HPLC-DAD fingerprint analysis method for the raw materials of Oxytropisfalcata and Oxytropis chiliophylla, both of which were used as ＂Er-Da-Xia＂ in Tibetan medicines, was developed and then subsequently applied to analyze samples collected from different locations or times. 19 common fingerprint peaks for O. falcata, 24 for O. chiliophylla, and 11 for the two herbs were designated respectively, including 7 identified characteristic peaks existing in both herbs and 1 uniquely presenting in O. chiliophylla. Although there were some slight differences in the chemicals of O. falcata and O. chiliophylla, the main components of both herbs were consistent generally. The results provided scientific basis, at least from the chemical point of view, for the reasonablity of two herbs being used as the same drug in Tibetan medicines and for the necessary of further investigation on their detailed chemical and pharmacological differences.
基金supported by Biological Breeding-National Science and Technology Major Project(2023ZD04073)the National Natural Science Foundation of China(32341022,32325035)+3 种基金Fundamental Research Funds for Central Nonprofit Scientific Institution(1610392024008)Hainan Seed Industry Laboratory(B23CJ0208)Hohhot Key R&D Project(2023-JBGS-S-1)Inner Mongolia Center of Pratacultural Technology Innovation(CCPTZX2023B01)。
文摘Dear Editor,High-yield,high-quality,and stress-tolerant forage crops are crucial for the sustainable development of grass-based livestock husbandry.Medicago species are among the most important legume forage crops worldwide.Alfalfa(Medicago sativa subsp.sativa,M.sativa ssp.sativa),a crop known as the“Queen of the Forages”,has high biomass productivity,high nutritional value,and good adaptability.
