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Antioxidant and cardioprotective effects of Ilex cornuta on myocardial ischemia injury

Chinese Journal of Natural Medicines 2017年第2期15卷 94-104页

作者： YUAN Yan PAN Shu YANG Shi-Lin LIU Yan-Li xu qiong-ming Department of Pharmacology College of Pharmaceutical ScienceSoochow UniversitySuzhou 215123China Department of Pharmaceutical Chemistry Guizhou UniversityGuiyang 550025China Department of Pharmacognosy College of Pharmaceutical ScienceSoochow UniversitySuzhou 215123China

Previous studies have indicated that the Ilex genus exhibits antioxidant, neuroprotective, hepatoprotective, and antiinflammatory activities. However, the pharmacologic action and mechanisms of Ilex cornuta against cardiac diseases have not yet been explored. The present study was designed to investigate the antioxidant and cardioprotective effects of Ilex cornuta root with in vitro and in vivo models. The anti-oxidative effects of the extract of Ilex cornuta root(ICR) were measured by 2, 2-diphenyl-1- picrylhydrazyl(DPPH) free-radical scavenging and MTT assays as well as immunoassay. Furthermore, a rat model of myocardial ischemia was established to investigate the cardioprotective effect of ICR in vivo. Eight compounds were isolated and identified from ICR and exhibited DPPH free-radical scavenging activities. They also could increase cell viability and inhibit morphological changes induced by H_2O_2 or Na_2S_2O_4 in H9c2 cardiomyocytes, followed by increasing the SOD activities and decreasing the MDA and ROS levels. In addition, it could suppress the apoptosis of cardiomyocytes. In the rat model of myocardial ischemia, ICR decreased myocardial infarct size and suppressed the activities of LDH and CK. Furthermore, ICR attenuated histopathological alterations of heart tissues and the MDA levels, while increasing SOD activities in serum. In conclusion, these results suggest that ICR has cardioprotective activity and could be developed as a new food supplement for the prevention of ischemic heart disease.

关键词： Ilex cornuta Myocardial ischemia Antioxidant Apoptosis

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Three new triterpenoids isolated from the aerial parts of Ilex cornuta and protective effects against H2O2-induced myocardial cell injury

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Chinese Journal of Natural Medicines 2017年第2期15卷 115-120页

作者： LI Shan-Shan LIU Yan-Li xu qiong-ming MAO Chen-Mei YANG Shi-Lin Children's Hospital of Soochow University Suzhou 215003China College of Pharmaceutical Sciences Soochow UniversitySuzhou 215123China

In the present study, three new triterpenoids, 23-hydroxyurs-12, 18-dien-28-oic acid 3β-O-α-L-arabinopyranoside(1), 23-hydroxyurs-12, 18-dien-28-oic acid 3β-O-β-D-glucuronopyranoside-6-O-methyl ester(2), and urs-12, 18-dien-28-oic acid 3β-O-β-D-glucuronopyranoside-6-O-methyl ester(3), and a known triterpenoid, 3β-hydroxy-urs-2, 18-dien-28-oic acid(4, randialic acid B), were isolated from the aerial parts of Ilex cornuta. Their structures were identified by the spectroscopic analyses(IR, ESI-MS, HR-ESI-MS, and 1D and 2D NMR) and chemical reactions. Compound 4 showed significant cell-protective effects against H_2O_2-induced H9c2 cardiomyocyte injury. Compounds 1-4 did not show any significant DPPH radical scavenging activity.

关键词： Ilex cornuta Aquifoliaceae Triterpenoids Cardiomyocytes Oxidative injury

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Laboratory Evaluation of the Molluscicidal Activity of Pulsatilla Chinensis(Bunge)Regel Saponins against the Snail Oncomelania Hupensis

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Biomedical and Environmental Sciences 2012年第2期25卷 224-229页

作者： CHEN Yan Qin xu qiong ming LIU Yan Li LI Xiao Ran YANG Shi Lin ZHUGE Hong Xiang Department of Parasitology Medical College of Soochow UniversitySuzhou 215123JiangsuChina Medical College of Nanyang Nanyang 473000HenanChina College of Pharmacy Medical College of Sooehow UniversitySuzhou 215123JiangsuChina

Objective To observe the toxicity of Pulsatilla chinensis（Bunge） Regel saponins（PRS） against Oncomelania hupensis（***）.Methods *** snails were exposed to 40% and 80% of 24 h LC50 of PRS for 24 h,and then choline esterase（CHE）,alanine aminotransferase（ALT）,alkaline phosphatase（ALP）,lactate dehydrogenase（LDH） activities in cephalopodium and liver of snails were ***（NIC） was used as the reference *** fish lethality test was evaluated to non-target aquatic species of *** The molluscicidal activity of PRS（LC50 at 24 h：0.48 mg/L） was similar to that of NIC（LC50 at 24 h：0.16 mg/L）.Significant alterations about CHE,ALP,and ALT activities both in the cephalopodium and the liver of snails were observed when *** was exposed to 40% and 80% LC50 of PRS or NIC for 24 *** and NIC could not affect LDH activity in the cephalopodium and the *** toxicity to fish of PRS was observed up to the highest concentration tested than *** PRS,as compared with the reference molluscicide NIC,is thought to be used for the control of harmful vector snails safely.

关键词： Oncomelania hupensis Molluscicidal activity Saponin Pulsatilla chinensis (Bunge) Regel Niclosamide

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斑蝥素及其衍生物的谱学研究

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波谱学杂志 2009年第1期26卷 126-135页

作者：汪俊许琼明孙晓飞苏州大学药学院江苏苏州215123

研究了斑蝥素、去甲斑蝥素以及去甲斑蝥酸钠结构的光波谱特征,为控制该原料和产品的质量提供依据,并对用喷雾干燥法制备的去甲斑蝥酸-壳聚糖固体分散体的红外光谱进行分析研究.通过紫外光谱、红外光谱、核磁共振氢谱和质谱手段对各化合... 详细信息

研究了斑蝥素、去甲斑蝥素以及去甲斑蝥酸钠结构的光波谱特征,为控制该原料和产品的质量提供依据,并对用喷雾干燥法制备的去甲斑蝥酸-壳聚糖固体分散体的红外光谱进行分析研究.通过紫外光谱、红外光谱、核磁共振氢谱和质谱手段对各化合物进行结构分析.样品斑蝥素、去甲斑蝥素、去甲斑蝥酸钠及去甲斑蝥酸-壳聚糖固体分散体的光波谱均符合其结构特征.研究表明紫外光谱、红外光谱、核磁共振氢谱和质谱是确定已知化合物结构的有效手段,可为斑蝥素衍生物的原料及产品提供定性定量依据.

关键词：斑蝥素衍生物紫外光谱红外光谱核磁共振氢谱质谱

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大豆荚的化学成分研究

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中草药 2015年第3期46卷 344-347页

作者：张蒙许琼明王桃云杨世林苏州大学药学院江苏苏州215123 苏州科技学院化学生物与材料工程学院江苏苏州215009

目的研究大豆Glycine max荚的化学成分。方法利用反复硅胶柱色谱法、Sephadex LH-20凝胶柱色谱法、中压柱色谱及半制备高效液相色谱等方法分离纯化,通过NMR、MS等谱学技术鉴定化合物结构。结果从大豆荚乙醇提取物中分离得到14个化合物,... 详细信息

目的研究大豆Glycine max荚的化学成分。方法利用反复硅胶柱色谱法、Sephadex LH-20凝胶柱色谱法、中压柱色谱及半制备高效液相色谱等方法分离纯化,通过NMR、MS等谱学技术鉴定化合物结构。结果从大豆荚乙醇提取物中分离得到14个化合物,分别鉴定为4,4′-二苯甲烷二氨基甲酸乙酯（1）、2,6-二甲氧基-1,4-对苯醌（2）、杜仲树脂酚（3）、蒲公英萜酮（4）、羽扇豆烯酮（5）、7,3′,4′-三羟基黄酮（6）、考迈斯托醇（7）、3-吲哚甲酸（8）、芹菜素（9）、phaseol（10）、7,4′-二羟基黄酮（11）、豆甾醇（12）、β-谷甾醇（13）、胡萝卜苷（14）。结论化合物1~5为首次从大豆属植物中分离得到,化合物6为首次从该植物中分离得到。

关键词：大豆 4,4′-二苯甲烷二氨基甲酸乙酯 2,6-二甲氧基-1,4-对苯醌杜仲树脂酚蒲公英萜酮羽扇豆烯酮

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Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science China Chemistry 2025年第1期68卷 288-296页

作者： Shuai Liu Wen-Qiang xu Ying-Tong Di Man-Cheng Tang Ding-Kang Chen ming-ming Cao Yao-Wen Chang Hong-Yu Tang Chun-Mao Yuan Jun-Bo Yang Zhi-Li Zuo Han Guo Zi-Fei xu Ying Zeng Yun-Dong Wu Xiao-Jiang Hao Key Laboratory of Phytochemistry and Natural Medicines (Chinese Academy of Sciences) Kunming Institute of Botany Chinese Academy of Sciences University of Chinese Academy of Sciences Lab of Computational Chemistry and Drug Design State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Shenzhen Bay Laboratory State Key Laboratory of Microbial Metabolism School of Life Sciences & Biotechnology Shanghai Jiao Tong University State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Molecular Biology Experimental Center Germplasm Bank of Wild Species in Southwest China Kunming Institute of Botany Chinese Academy of Sciences Yunnan Key Laboratory for Wild Plant Resources Kunming Institute of Botany Chinese Academy of Sciences Research Unit of Chemical Biology of Natural Anti-Virus Products Chinese Academy of Medical Sciences

In the intricate process of natural product biosynthesis, a metabolon can enhance metabolic flux by associating sequential enzymes. A fungal metabolon, comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G, is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide B. Using notoamide E as a substance, Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation, followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium unit. Subsequently,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol rearrangement. This provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

关键词： metabolon Diels-Alder reaction semipinacol rearrangement biosynthesis notoamides spiro polycyclic alkaloids

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Enhancement of motor functional recovery in thoracic spinal cord injury: voluntary wheel running versus forced treadmill exercise

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Neural Regeneration Research 2025年第3期20卷 836-844页

作者： Do-Hun Lee Dan Cao Younghye Moon Chen Chen Nai-Kui Liu Xiao-ming xu Wei Wu Spinal Cord and Brain Injury Research Group Stark Neurosciences Research InstituteIndiana University School of MedicineIndianapolisINUSA Department of Neurological Surgery Indiana University School of MedicineIndianapolisINUSA Department of Neuroscience Baylor College of MedicineHoustonTXUSA

Spinal cord injury necessitates effective rehabilitation strategies, with exercise therapies showing promise in promoting recovery. This study investigated the impact of rehabilitation exercise on functional recovery and morphological changes following thoracic contusive spinal cord injury. After a 7-day recovery period after spinal cord injury, mice were assigned to either a trained group(10 weeks of voluntary running wheel or forced treadmill exercise) or an untrained group. Bi-weekly assessments revealed that the exercise-trained group, particularly the voluntary wheel exercise subgroup, displayed significantly improved locomotor recovery, more plasticity of dopaminergic and serotonin modulation compared with the untrained group. Additionally, exercise interventions led to gait pattern restoration and enhanced transcranial magnetic motor-evoked potentials. Despite consistent injury areas across groups, exercise training promoted terminal innervation of descending axons. In summary, voluntary wheel exercise shows promise for enhancing outcomes after thoracic contusive spinal cord injury, emphasizing the role of exercise modality in promoting recovery and morphological changes in spinal cord injuries. Our findings will influence future strategies for rehabilitation exercises, restoring functional movement after spinal cord injury.

关键词： behavioral assessment motor function neural plasticity running wheel exercise spinal cord injury treadmill exercise voluntary exercise

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枸骨茎的化学成分研究

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中草药 2016年第6期47卷 891-896页

作者：毛晨梅李杉杉许琼明杨世林苏州大学附属儿童医院江苏苏州215000 苏州大学医学部药学院江苏苏州215123

目的对冬青科冬青属植物枸骨Ilex cornuta茎进行化学成分研究,并考察分得化合物的自由基清除能力。方法利用硅胶、中压柱色谱及半制备高效液相色谱等方法,对枸骨茎的化学成分进行系统分离;通过质谱、核磁共振谱等光谱数据鉴定化合物结构... 详细信息

目的对冬青科冬青属植物枸骨Ilex cornuta茎进行化学成分研究,并考察分得化合物的自由基清除能力。方法利用硅胶、中压柱色谱及半制备高效液相色谱等方法,对枸骨茎的化学成分进行系统分离;通过质谱、核磁共振谱等光谱数据鉴定化合物结构;利用DPPH清除自由基实验测定化合物1~9的抗氧化活性。结果从枸骨茎50%乙醇提取物中分离并鉴定了15个化合物,分别为3,4-二咖啡酰奎宁酸（1）、3,4,5-三咖啡酰奎宁酸（2）、4,5-二咖啡酰奎宁酸甲酯（3）、3,4-二咖啡酰奎宁酸甲酯（4）、3,5-二咖啡酰奎宁酸甲酯（5）、3,4,5-三咖啡酰奎宁酸甲酯（6）、丁香醛（7）、没食子酸乙酯（8）、二氢芥子醇（9）、2,6-二甲氧基-1,4-苯醌（10）、牛蒡苷元（11）、1-O-香草酸-6-（3″,5″-二甲氧基没食子酰）-β-D-吡喃葡萄糖苷（12）、木质素苷（13）、（＋）-（7S,8S）-3,5-二甲氧基-4-羟基苯基丙三醇-8-O-β-D-吡喃葡萄糖苷（14）、夏佛托苷（15）。结论化合物6、8~10、14、15为首次从该属植物中分离得到,化合物2、7、11、12为首次从该植物中分离得到;化合物1~6具有显著的清除自由基作用。

关键词：枸骨抗氧化活性 3,4-二咖啡酰奎宁酸 3,4,5-三咖啡酰奎宁酸 4,5-二咖啡酰奎宁酸甲酯 3,4-二咖啡酰奎宁酸甲酯 3,5-二咖啡酰奎宁酸甲酯 3,4,5-三咖啡酰奎宁酸甲酯丁香醛

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Regulation and function of endoplasmic reticulum autophagy in neurodegenerative diseases

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Neural Regeneration Research 2025年第1期20卷 6-20页

作者： Xiu-Yun Zhao De-En xu ming-Lei Wu Ji-Chuan Liu Zi-Ling Shi Quan-Hong Ma Department of Neurology and Clinical Research Center of Neurological Disease the Second Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina Institute of Neuroscience&Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases Soochow UniversitySuzhouJiangsu ProvinceChina Department of Neurology Jiangnan University Medical CenterWuxiJiangsu ProvinceChina

The endoplasmic reticulum,a key cellular organelle,regulates a wide variety of cellular *** reticulum autophagy,one of the quality control systems of the endoplasmic reticulum,plays a pivotal role in maintaining endoplasmic reticulum homeostasis by controlling endoplasmic reticulum turnover,remodeling,and *** this review,we briefly describe the endoplasmic reticulum quality control system,and subsequently focus on the role of endoplasmic reticulum autophagy,emphasizing the spatial and temporal mechanisms underlying the regulation of endoplasmic reticulum autophagy according to cellular *** also summarize the evidence relating to how defective or abnormal endoplasmic reticulum autophagy contributes to the pathogenesis of neurodegenerative *** summary,this review highlights the mechanisms associated with the regulation of endoplasmic reticulum autophagy and how they influence the pathophysiology of degenerative nerve *** review would help researchers to understand the roles and regulatory mechanisms of endoplasmic reticulum-phagy in neurodegenerative disorders.

关键词： autophagy endoplasmic reticulum endoplasmic reticulum autophagy endoplasmic reticulum quality control system endoplasmic reticulum receptors endoplasmic reticulum-associated degradation neurodegeneration neurodegenerative disease selective autophagy unfolded protein response

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白头翁皂苷D体外抗肝癌作用及其机制研究

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中草药 2014年第22期45卷 3295-3301页

作者：岳文华徐坤冯育林张天许琼明杨世林刘艳丽江西中医药大学药学院江西南昌330000 苏州大学药学院江苏苏州215123 铜仁市人民医院药学部贵州铜仁554300

目的探讨白头翁皂苷D体外抗肝癌作用及其相关机制。方法采用MTT法考察白头翁皂苷D对人肝癌细胞BEL-7402增殖的影响,同时观察BEL-7402细胞形态的变化,采用集落形成实验考察白头翁皂苷D对BEL-7402细胞集落形成的影响;Hoechest 33342染色观... 详细信息

目的探讨白头翁皂苷D体外抗肝癌作用及其相关机制。方法采用MTT法考察白头翁皂苷D对人肝癌细胞BEL-7402增殖的影响,同时观察BEL-7402细胞形态的变化,采用集落形成实验考察白头翁皂苷D对BEL-7402细胞集落形成的影响;Hoechest 33342染色观察BEL-7402细胞凋亡的形态变化;流式细胞术检测BEL-7402细胞凋亡率和线粒体膜电位的变化;采用Western blotting法检测BEL-7402细胞Bcl-2和Caspase-3蛋白的表达。结果 MTT结果显示白头翁皂苷D对BEL-7402细胞增殖有抑制作用;集落形成实验结果显示白头翁皂苷D能明显抑制BEL-7402细胞集落的形成,白头翁皂苷D(25.00μg/m L)能显著诱导BEL-7402细胞凋亡;白头翁皂苷D(18.75、25.00μg/m L)能显著降低BEL-7402细胞线粒体膜电位;白头翁皂苷D(12.50、18.75、25.00μg/m L)可显著上调BEL-7402细胞中Caspase-3的表达;白头翁皂苷D(25.00μg/m L)可显著下调Bcl-2的表达。结论白头翁皂苷D有良好的体外抗肝癌作用,其机制与调节线粒体途径凋亡相关蛋白Bcl-2、Caspase-3的表达有关。

关键词：抗肿瘤肝癌细胞凋亡线粒体途径

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