Three new pyridine type alkaloids,(-)-vinmajpyridines A–C(1–3),along with two known alkaloids,have been isolated from the aerial parts of Vinca major cultivated in Pakistan.Their structures have been elucidated by m...Three new pyridine type alkaloids,(-)-vinmajpyridines A–C(1–3),along with two known alkaloids,have been isolated from the aerial parts of Vinca major cultivated in Pakistan.Their structures have been elucidated by means of NMR and HRESIMS spectroscopic data.The new alkaloids were evaluated for their cytotoxicity against glioma initiating cell lines(GITC-3#and GITC-18#),glioblastoma cell lines(U-87MG and T98G),and lung cancer cell line A-549,but none of them was active at 20 lg/mL concentration.展开更多
A pot research has been conducted in Horticultural Department Nursery, Faculty of Agricultural and Forestry, Duhok University, during the period of May 15, 2012-Sep. 1, 2012. The study involved in testing the effects ...A pot research has been conducted in Horticultural Department Nursery, Faculty of Agricultural and Forestry, Duhok University, during the period of May 15, 2012-Sep. 1, 2012. The study involved in testing the effects of two amended organic media （loam ＋ sheep manure and loam ＋ peat moss （1：1）） and different concentrations of seaweed （sea force 2） extract including （0, 0.5, 1, 1.5 and 2 mL/L） on growth and flowering of Periwinkle （Vinca rosea） plant. The results showed that growing vinca plants in peat moss medium and spraying sea force 2 extract with low concentrations especially 0.5 mL/L resulted in positive significant difference in vegetative and flowering characteristics.展开更多
The present study was designed to investigate the non-alkaloid compounds from the leaves and stems of Vinca major cultivated in Yunnan Province, China. The compounds were isolated using chromatographic techniques. The...The present study was designed to investigate the non-alkaloid compounds from the leaves and stems of Vinca major cultivated in Yunnan Province, China. The compounds were isolated using chromatographic techniques. The structures were elucidated by 1D- and 2D-NMR spectroscopic methods in combination with UV, IR, and MS analyses. The 1, 1-diphenyl-2-picrylhydrazyl （DPPH）-scavenging activity of Compounds 1-7 were evaluated. One new iridoid glycoside （compound 1）, together with 11 known compounds, were isolated from Vinca major. Compounds 1, 5, and 6 showed moderate DPPH-scavenging activity, with IC50 values being 70.6, 32.8, and 62.2μmaol·L 1, respectively. In conclusion, compound 1 is a newly identified iridoid glycoside with moderate antioxidant activity.展开更多
采用常规植物石蜡切片法对蔓长春花(Vinca major L.)不同发育阶段花器官实施解剖结构研究,结果表明,蔓长春花花药壁发育属于基本类型,其由表皮、药室内壁、中层和腺质型绒毡层组成。小孢子母细胞减数分裂为同时型,四分体排列成四面体型...采用常规植物石蜡切片法对蔓长春花(Vinca major L.)不同发育阶段花器官实施解剖结构研究,结果表明,蔓长春花花药壁发育属于基本类型,其由表皮、药室内壁、中层和腺质型绒毡层组成。小孢子母细胞减数分裂为同时型,四分体排列成四面体型,成熟花粉是2-细胞型。其胚珠是直生胚珠、双珠被、厚珠心型,次生造孢细胞发育成大孢子母细胞。大孢子母细胞减数分裂形成三分体,合点端的大孢子发育为胚囊,胚囊为蓼型。展开更多
目的:观察小蔓长春花提取物(vinca minor linn extraction,VMLE)对实验性脑缺血大鼠血液及抗氧化能力的影响。方法:根据Zea-Longa线栓法制作SD大鼠右侧大脑中动脉阻塞(middle cerebral arteryocclusion,MCAO)模型,清醒后1h,即参考Beder...目的:观察小蔓长春花提取物(vinca minor linn extraction,VMLE)对实验性脑缺血大鼠血液及抗氧化能力的影响。方法:根据Zea-Longa线栓法制作SD大鼠右侧大脑中动脉阻塞(middle cerebral arteryocclusion,MCAO)模型,清醒后1h,即参考Bederson方法对模型大鼠进行神经功能缺损评分,入选大鼠被随机分为模型组(model)、尼莫地平组(nimodipine)、VMLE高、低剂量组4组,另加假手术组(sham)共5组,各组遂即分别给予相应药物灌胃2d。48h后测定大鼠血液流变学和抗氧化能力。结果:VMLE10g/kg、5g/kg均能明显降低,实验性脑缺血大鼠全血黏度、血浆黏度、红细胞压积(Hct)、红细胞聚集指数(EAI)、红细胞刚性指数(ERI);增强了SOD和GSH-PX活性,降低了MDA含量,有统计学意义(P<0.05);尼莫地平10g/kg能增强SOD和GSH-PX活性,降低了MDA含量,但对实验性脑缺血大鼠全血黏度、血浆黏度、红细胞压积无显著影响。结论:VMLE可以改善脑缺血大鼠血液流变学及抗氧化能力。展开更多
基金The authors are grateful to the National Natural Science Foundation of China(81225024)for financial support.
文摘Three new pyridine type alkaloids,(-)-vinmajpyridines A–C(1–3),along with two known alkaloids,have been isolated from the aerial parts of Vinca major cultivated in Pakistan.Their structures have been elucidated by means of NMR and HRESIMS spectroscopic data.The new alkaloids were evaluated for their cytotoxicity against glioma initiating cell lines(GITC-3#and GITC-18#),glioblastoma cell lines(U-87MG and T98G),and lung cancer cell line A-549,but none of them was active at 20 lg/mL concentration.
文摘A pot research has been conducted in Horticultural Department Nursery, Faculty of Agricultural and Forestry, Duhok University, during the period of May 15, 2012-Sep. 1, 2012. The study involved in testing the effects of two amended organic media （loam ＋ sheep manure and loam ＋ peat moss （1：1）） and different concentrations of seaweed （sea force 2） extract including （0, 0.5, 1, 1.5 and 2 mL/L） on growth and flowering of Periwinkle （Vinca rosea） plant. The results showed that growing vinca plants in peat moss medium and spraying sea force 2 extract with low concentrations especially 0.5 mL/L resulted in positive significant difference in vegetative and flowering characteristics.
基金supported by National Natural Science Foundation of China(No.81225024)National Science and Technology Support Program of China(No.2013 BAI11B02)
文摘The present study was designed to investigate the non-alkaloid compounds from the leaves and stems of Vinca major cultivated in Yunnan Province, China. The compounds were isolated using chromatographic techniques. The structures were elucidated by 1D- and 2D-NMR spectroscopic methods in combination with UV, IR, and MS analyses. The 1, 1-diphenyl-2-picrylhydrazyl （DPPH）-scavenging activity of Compounds 1-7 were evaluated. One new iridoid glycoside （compound 1）, together with 11 known compounds, were isolated from Vinca major. Compounds 1, 5, and 6 showed moderate DPPH-scavenging activity, with IC50 values being 70.6, 32.8, and 62.2μmaol·L 1, respectively. In conclusion, compound 1 is a newly identified iridoid glycoside with moderate antioxidant activity.
文摘采用常规植物石蜡切片法对蔓长春花(Vinca major L.)不同发育阶段花器官实施解剖结构研究,结果表明,蔓长春花花药壁发育属于基本类型,其由表皮、药室内壁、中层和腺质型绒毡层组成。小孢子母细胞减数分裂为同时型,四分体排列成四面体型,成熟花粉是2-细胞型。其胚珠是直生胚珠、双珠被、厚珠心型,次生造孢细胞发育成大孢子母细胞。大孢子母细胞减数分裂形成三分体,合点端的大孢子发育为胚囊,胚囊为蓼型。
文摘目的:观察小蔓长春花提取物(vinca minor linn extraction,VMLE)对实验性脑缺血大鼠血液及抗氧化能力的影响。方法:根据Zea-Longa线栓法制作SD大鼠右侧大脑中动脉阻塞(middle cerebral arteryocclusion,MCAO)模型,清醒后1h,即参考Bederson方法对模型大鼠进行神经功能缺损评分,入选大鼠被随机分为模型组(model)、尼莫地平组(nimodipine)、VMLE高、低剂量组4组,另加假手术组(sham)共5组,各组遂即分别给予相应药物灌胃2d。48h后测定大鼠血液流变学和抗氧化能力。结果:VMLE10g/kg、5g/kg均能明显降低,实验性脑缺血大鼠全血黏度、血浆黏度、红细胞压积(Hct)、红细胞聚集指数(EAI)、红细胞刚性指数(ERI);增强了SOD和GSH-PX活性,降低了MDA含量,有统计学意义(P<0.05);尼莫地平10g/kg能增强SOD和GSH-PX活性,降低了MDA含量,但对实验性脑缺血大鼠全血黏度、血浆黏度、红细胞压积无显著影响。结论:VMLE可以改善脑缺血大鼠血液流变学及抗氧化能力。
