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钩藤水提物Batch-2对6-羟多巴胺诱导的SH-SY5Y细胞损伤的神经保护作用(英文) 被引量:5
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作者 石振华 XI Zhao-Wilsor +5 位作者 王浩 关鹏 于鹏 常彦忠 段相林 赵保路 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2010年第7期769-778,共10页
以前的药理学研究表明,钩藤水溶性提取物C-MED-100TM不仅具有抗氧化活性,而且还具有很好的DNA修复和免疫功能.Batch-2是一种新的水溶性钩藤提取物,而它的自由基清除能力及神经保护作用还未见报道.首先检测了batch-2对六羟多巴胺诱导的SH... 以前的药理学研究表明,钩藤水溶性提取物C-MED-100TM不仅具有抗氧化活性,而且还具有很好的DNA修复和免疫功能.Batch-2是一种新的水溶性钩藤提取物,而它的自由基清除能力及神经保护作用还未见报道.首先检测了batch-2对六羟多巴胺诱导的SH-SY5Y细胞损伤的神经保护作用机制,然后利用红外光谱、HPLC和分光光度技术对batch-2的组成成分进行了分析.结果表明,batch-2具有清除各种自由基的能力,尤其是对羟自由基的清除(25mg/L的batch-2对羟自由基的清除率为60%),batch-2可剂量依赖性地抑制6-羟多巴胺诱导的细胞凋亡、脂质过氧化水平、线粒体膜电位的降低和细胞内活性氧和一氧化氮的增加.同时,batch-2抑制了由6-羟多巴胺诱导的SH-SY5Y细胞内iNOS和NF-κB蛋白的上调.结果表明,batch-2对六羟多巴胺诱导的SH-SY5Y细胞损伤的神经保护作用是通过清除活性氧和一氧化氮、抑制iNOS和NF-κB表达实现的.成分分析表明,batch-2中的多酚和奎宁酸含量分别为6.43%和0.0958%.上述结果显示,batch-2的抗氧化机制部分类似于EGCG.对于帕金森病的预防,batch-2是一个潜在具有很好的神经保护作用的天然抗氧化剂. 展开更多
关键词 绒毛钩藤(uncaria tomentosa) 抗氧化剂 帕金森氏病 活性氧 6-羟多巴胺 电子顺磁共振
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Relief of osteoarthritis with a herbal-amino acid supplement: A randomized double-blind placebo controlled trial 被引量:1
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作者 Mark J.S. Miller Ross Butler 《Advances in Bioscience and Biotechnology》 2012年第4期504-510,共7页
A redox active medicinal plant and L-leucine mixture (HLM) was investigated in subjects with established osteoarthritis of the knee in a multi-center, rando- m-ized, placebo-controlled, double-blind clinical trial. A ... A redox active medicinal plant and L-leucine mixture (HLM) was investigated in subjects with established osteoarthritis of the knee in a multi-center, rando- m-ized, placebo-controlled, double-blind clinical trial. A total of 96 subjects with osteoarthritis were enrolled and randomized to either placebo (n = 38) or HLM treatment group (n = 38). The HLM group re- ceived a combination of Uncaria tomentosa (300 mg), Boswellia serrata (200 mg), Lepidium meyenii (1000 mg) and L-Leucine (700 mg) given as 3 capsules once a day. The placebo group received matching capsules with carboxymethylcellulose. The treatment period was 8 weeks, with assessments made at days 7, 14, 28 and 56. The primary outcome was reduction in total WOMAC score. VAS pain, tolerability, investigator assessments, use of rescue medication (acetominophen), and safety assessments of vital signs and laboratory assessments were included. Subject randomization was effective for age, gender and disease severity. In the placebo group 32/38 subjects completed the trial and for HLM 35/38. WOMAC scores (pain, stiffness, physical performance and total) steadily declined over the course of the 8 week study in both groups, but the magnitude was significantly greater for HLM (P < 0.05). Total WOMAC was reduced 46.5% for HLM and 25.4 % for placebo. VAS pain was reduced 21.8% in the placebo group (p < 0.002) but the changes were significantly greater (37.8% p < 0.03) with HLM treatment. Investigator’s global assessment rating of good-excellent was 24/35 (69%) for HLM and 14/32 (44%) for placebo (P = 0.05). Rescue medication consumption and tolerability were comparable for HLM and placebo. No safety issues were evident with either group. As expected a placebo effect was observed, nevertheless HLM was clearly more effective in relieving the symptoms of osteoarthritis. This HLM represents a safe and effective new approach to the management of osteoarthritis symptoms. 展开更多
关键词 OsTEOARTHRITIs Dietary sUPPLEMENT cats claw L-LEUCINE BOsWELLIA sERRATA Maca uncaria tomentosa LEPIDIUM Meyenii Inflammation Cartilage Flexibility Pain Quality of Life stiffness Arthritis Nutraceutical Natural Product
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