AIM： To study isolation and chemical characterization of pectin derived from the common cranberry Vaccin/um oxycoccos L. （oxycoccusan OP） and the testing of its preventive effect on experimental colitis. METHODS： ...AIM： To study isolation and chemical characterization of pectin derived from the common cranberry Vaccin/um oxycoccos L. （oxycoccusan OP） and the testing of its preventive effect on experimental colitis. METHODS： Mice were administrated orally with OP two days prior to a rectal injection of 5% acetic acid and examined for colonic damage 24 h later. Colonic inflammation was characterized by macroscopical injury and enhanced levels of myeloperoxidase activity measured spectrophotometrically with o-phenylene diamine as the substrate. The mucus contents of the colon were determined by the Alcian blue dye binding method. Vascular permeability was estimated using 4% Evans blue passage after i.p. injection of 0.05 mol/L acetic acid. RESULTS： In the mice treated with OP, colonic macroscopic scores （1.1 ± 0.4 vs 2.7, P 〈 0.01） and the total square area of damage （10 ± 2 vs 21 ± 7, P 〈 0.01） were significantly reduced when compared with the vehicle-treated colitis group. OP was shown to decrease the tissue myeloperoxidase activity in colons （42 ± 11 vs 112 ± 40, P 〈 0.01） and enhance the amount of mucus of colitis mice （0.9 ± 0.1 vs 0.4 ± 0.1, P 〈 0.01）. The level of colonic malondialdehyde was noted to decrease in OP-pretreated mice （3.6 ± 0.7 vs 5.1 ± 0.8, P 〈 0.01）. OP was found to decrease the inflammatory status of mice as was determined by reduction of vascular permeability （161 ± 34 vs 241 ± 21, P 〈 0.01）. Adhesion of peritoneal neutrophils and macrophages was also shown to decrease after administration of OP （141 ± 50 vs 235 ± 37, P 〈 0.05）. CONCLUSION： Thus, a preventive effect of pectin from the common cranberry, namely oxycoccusan OP, on acetic acid-induced colitis in mice was detected. A reduction of neutrophil infiltration and antioxidant action may be implicated in the protective effect of oxycoccusan.展开更多
目的:分析外来植物药蔓越莓研究文献,依据中医药理论探讨蔓越莓的中药药性,为蔓越莓与中药配伍的临床合理使用及产品开发提供理论依据。方法:选取Web of Science(Wo S)及pubmed数据库中外来药物蔓越莓的相关英文文献,对196篇临床实验,14...目的:分析外来植物药蔓越莓研究文献,依据中医药理论探讨蔓越莓的中药药性,为蔓越莓与中药配伍的临床合理使用及产品开发提供理论依据。方法:选取Web of Science(Wo S)及pubmed数据库中外来药物蔓越莓的相关英文文献,对196篇临床实验,140篇活性成分文献进行研究与分析,并结合中医理论对蔓越莓的中药药性进行初步探讨。结果:蔓越莓的中药药性为性味归经为酸、甘,凉;归肾、膀胱、脾经。功效主治为清热通淋,化脂降浊,健脾益气。用于湿热淋证,高脂血症,脾气虚弱,倦怠无力。结论:概括归纳蔓越莓的性味归经、功效主治及用法用量,赋予其中药药性,使其成为新"外来中药",可以为蔓越莓与中药的配伍及临床应用提供理论依据,能更好地在医疗保健行业中推广应用,研发新产品。展开更多
研究蔓越莓对中波紫外线(UVB)诱导的人表皮角质形成细胞(Ha Ca T)光损伤的保护作用。用3个不同剂量的蔓越莓果汁预处理Ha Ca T细胞6 h,采用60 m J/cm^2强度UVB照射细胞;然后用MTT法检测细胞的生存率,吸取细胞上清液采用比色法检测丙二醛...研究蔓越莓对中波紫外线(UVB)诱导的人表皮角质形成细胞(Ha Ca T)光损伤的保护作用。用3个不同剂量的蔓越莓果汁预处理Ha Ca T细胞6 h,采用60 m J/cm^2强度UVB照射细胞;然后用MTT法检测细胞的生存率,吸取细胞上清液采用比色法检测丙二醛(MDA)、羟脯氨酸(Hyp)的含量和超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、乳酸脱氢酶(LDH)的活性变化,用荧光法检测细胞内活性氧自由基(ROS)含量,用倒置显微镜和流式细胞仪观察检测细胞凋亡状况。UVB辐射对Ha Ca T细胞造成比较严重的损伤;相比于空白对照组,UVB辐射模型组Ha Ca T细胞活性下降了29.54%,SOD和GSH-Px活性极显著降低(P<0.01);相比于模型组,蔓越莓各剂量组可显著提高UVB照射后Ha Ca T细胞的活力(P<0.05或P<0.01),提高SOD和GSH-Px活性(P<0.01),减少MDA和ROS含量(P<0.05或P<0.01),并且降低LDH活性和增加Hyp含量(P<0.01),呈剂量依赖关系,从而降低UVB所导致的细胞损伤及凋亡率升高。蔓越莓可以明显减少UVB诱导Ha Ca T细胞的氧化损伤和凋亡,具有显著的光保护功效,其作用机制与增强细胞抗氧化能力、加速清除氧自由基以及促进胶原蛋白合成有关。展开更多
Many food and plant extracts have shown in vitro antiHelicobacter pylori(H.pylori)activity,but are less effective in vivo.The anti-H.pylori effects of these extracts are mainly permeabilitization of the membrane,anti-...Many food and plant extracts have shown in vitro antiHelicobacter pylori(H.pylori)activity,but are less effective in vivo.The anti-H.pylori effects of these extracts are mainly permeabilitization of the membrane,anti-adhesion,inhibition of bacterial enzymes andbacterial grown.We,herein,review treatment effects of cranberry,garlic,curcumin,ginger and pistacia gum against H.pylori in both in vitro,animal studies and in vivo studies.展开更多
基金the Program of Presidium of the Russian Acad.Sci. <>, the Russian Fund forBasic Research, No. 06-04-48079 the Program for LeadingScientific Schools, No. 5796.2006.4
文摘AIM： To study isolation and chemical characterization of pectin derived from the common cranberry Vaccin/um oxycoccos L. （oxycoccusan OP） and the testing of its preventive effect on experimental colitis. METHODS： Mice were administrated orally with OP two days prior to a rectal injection of 5% acetic acid and examined for colonic damage 24 h later. Colonic inflammation was characterized by macroscopical injury and enhanced levels of myeloperoxidase activity measured spectrophotometrically with o-phenylene diamine as the substrate. The mucus contents of the colon were determined by the Alcian blue dye binding method. Vascular permeability was estimated using 4% Evans blue passage after i.p. injection of 0.05 mol/L acetic acid. RESULTS： In the mice treated with OP, colonic macroscopic scores （1.1 ± 0.4 vs 2.7, P 〈 0.01） and the total square area of damage （10 ± 2 vs 21 ± 7, P 〈 0.01） were significantly reduced when compared with the vehicle-treated colitis group. OP was shown to decrease the tissue myeloperoxidase activity in colons （42 ± 11 vs 112 ± 40, P 〈 0.01） and enhance the amount of mucus of colitis mice （0.9 ± 0.1 vs 0.4 ± 0.1, P 〈 0.01）. The level of colonic malondialdehyde was noted to decrease in OP-pretreated mice （3.6 ± 0.7 vs 5.1 ± 0.8, P 〈 0.01）. OP was found to decrease the inflammatory status of mice as was determined by reduction of vascular permeability （161 ± 34 vs 241 ± 21, P 〈 0.01）. Adhesion of peritoneal neutrophils and macrophages was also shown to decrease after administration of OP （141 ± 50 vs 235 ± 37, P 〈 0.05）. CONCLUSION： Thus, a preventive effect of pectin from the common cranberry, namely oxycoccusan OP, on acetic acid-induced colitis in mice was detected. A reduction of neutrophil infiltration and antioxidant action may be implicated in the protective effect of oxycoccusan.
文摘目的:分析外来植物药蔓越莓研究文献,依据中医药理论探讨蔓越莓的中药药性,为蔓越莓与中药配伍的临床合理使用及产品开发提供理论依据。方法:选取Web of Science(Wo S)及pubmed数据库中外来药物蔓越莓的相关英文文献,对196篇临床实验,140篇活性成分文献进行研究与分析,并结合中医理论对蔓越莓的中药药性进行初步探讨。结果:蔓越莓的中药药性为性味归经为酸、甘,凉;归肾、膀胱、脾经。功效主治为清热通淋,化脂降浊,健脾益气。用于湿热淋证,高脂血症,脾气虚弱,倦怠无力。结论:概括归纳蔓越莓的性味归经、功效主治及用法用量,赋予其中药药性,使其成为新"外来中药",可以为蔓越莓与中药的配伍及临床应用提供理论依据,能更好地在医疗保健行业中推广应用,研发新产品。
文摘研究蔓越莓对中波紫外线(UVB)诱导的人表皮角质形成细胞(Ha Ca T)光损伤的保护作用。用3个不同剂量的蔓越莓果汁预处理Ha Ca T细胞6 h,采用60 m J/cm^2强度UVB照射细胞;然后用MTT法检测细胞的生存率,吸取细胞上清液采用比色法检测丙二醛(MDA)、羟脯氨酸(Hyp)的含量和超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、乳酸脱氢酶(LDH)的活性变化,用荧光法检测细胞内活性氧自由基(ROS)含量,用倒置显微镜和流式细胞仪观察检测细胞凋亡状况。UVB辐射对Ha Ca T细胞造成比较严重的损伤;相比于空白对照组,UVB辐射模型组Ha Ca T细胞活性下降了29.54%,SOD和GSH-Px活性极显著降低(P<0.01);相比于模型组,蔓越莓各剂量组可显著提高UVB照射后Ha Ca T细胞的活力(P<0.05或P<0.01),提高SOD和GSH-Px活性(P<0.01),减少MDA和ROS含量(P<0.05或P<0.01),并且降低LDH活性和增加Hyp含量(P<0.01),呈剂量依赖关系,从而降低UVB所导致的细胞损伤及凋亡率升高。蔓越莓可以明显减少UVB诱导Ha Ca T细胞的氧化损伤和凋亡,具有显著的光保护功效,其作用机制与增强细胞抗氧化能力、加速清除氧自由基以及促进胶原蛋白合成有关。
文摘Many food and plant extracts have shown in vitro antiHelicobacter pylori(H.pylori)activity,but are less effective in vivo.The anti-H.pylori effects of these extracts are mainly permeabilitization of the membrane,anti-adhesion,inhibition of bacterial enzymes andbacterial grown.We,herein,review treatment effects of cranberry,garlic,curcumin,ginger and pistacia gum against H.pylori in both in vitro,animal studies and in vivo studies.
