Antiinflammatory and analgesic effect of herbal cocktail Hongbaekjeong via inhibition of proinflammatory cytokines and prostaglandin E2 release

Though Hongbaekjeong(HBJ),a hebal mixture of three medicinal plants,has been traditionally used for arthritis and muscular pain,its scientific evidence still remains unclear.Thus,in the present study,analgesic and anti-inflammatory mechanism of HBJ was evaluated in vitro and in vivo.HBJ significantly reduced NO production and prostaglandin E2(PGE2)release and also attenuated the expression of cyclooxygenase 2(COX-2)in lipopolysaccharides(LPS)and interferon(IFN)-c treated RAW 264.7 cells.Furthermore,HBJ abrogated the production of proinflammatory cytokines such as interleukin(IL)1b,IL-6,IL-8 and monocyte chemoattractant protein-1(MCP-1)in LPS and IFN-c treated RAW 264.7 cells.In addition,HBJ significantly decreased the number of writhing syndrome induced by acetic acid,and also increased latency in hot-plate method and tail flick test in mice.Consistently,HBJ significantly reduced the edema volume in the hind paw of the rats with arthritis induced by Freund’s complete adjuvant(FCA)compared to untreated control.Collectively,our findings demonstrate the antiinflammatory and analgesic potential of HBJ via inhibition of proinflammatory cytokines and PGE2 release for treatment of arthritis and muscular pain.     

PGE patterns of ores of Dajing Cu-polymetallic deposit in Linxi County,Inner Mongolia: Indicator to source of metallogenic elements

By comparing PGE patterns of sulfide ores with that of basic-ultrabasic dikes occurring in the Dajing Cu-polymetallic deposit, we discover that there are similar positive slopes between the basic-ultrabasic dikes and the black ores composed mainly of sphalerite and galena, reflecting affinity of their source. The PGE patterns of the yellow ores composed basically of chalcopyrite, arsenopyrite and pyrite are actually different. One is close to the pattern of the mantle lherzolite, and others resemble the pattern of the basic rocks. However, the concentrations of Ru are higher in the yellow ores, reflecting that sulfur attains or approaches saturation in their parent magma. The PGE characteristics of ores and dikes show that the magmas derived from the deep of crust and the metallogenic elements were supplied mainly by growth material of the crust. In addition, the mantle-derived magma also offered some elements.     

美洲大蠊提取物CⅡ-3抗炎作用及机制研究

目的:研究美洲大蠊提取物CⅡ-3抗急性炎症的作用,并探讨其可能的作用机制。方法:采用二甲苯致大鼠耳肿胀和角叉菜胶致小鼠足跖肿胀法急性炎症模型考察美洲大蠊提取物CⅡ-3抗急性炎症的作用。结果:50、100mg/kg的CⅡ-3对大鼠耳肿胀有明显抑制作用;100、200mg/kg的CⅡ-3对小鼠足跖肿胀有非常明显的抑制作用,且能显著降低小鼠炎足浸泡液中炎症介质PGE2、组胺和MDA的含量,并能提高炎症组织中SOD的活性。结论:美洲大蠊提取物CⅡ-3对急性炎症具有较好的抑制作用,其抗炎作用可能与减少炎症介质的含量和清除自由基有关。     

Re-Os isotopes and PGE geochemistry of black shales and intercalated Ni-Mo polymetallic sulfide bed from the Lower Cambrian Niutitang Formation, South China

The paleo oceanenvironmentalchangeduringthePrecambrian Cambriantransitionisakeyissuere latedtothecausesforanexplosiveradiationofdiffer entmetazoanphyladuringtheEarlyCambrianera .Thechemicalandisotopiccompositionsofmarinesed iments (carbonates ,phosphorites ,siliceousrocks ,andblackshales)recordthechangingcompositionandphysicalconditionsoftheseawaterinwhichtheserocksaccumulated .Organiccarbon richblackshalesfrommarineenvironmentsarecommonlyenrichedinanumberoftraceelementssuchasNi,Mo ,V ,Co ,…     

高速大规模集成电路网络的快速部分高斯消元仿真方法

提出了一种时域内含互连线的高速非线性大规模集成电路网络的快速部分高斯消元仿真方法。将电路分析改进节点导纳矩阵方程的导纳矩阵〖Ｙ〗中含有非线性电路元件贡献的行移到最上方的位置,由于线性元件对〖Ｙ〗矩阵的贡献不随时间变化,因此在每个时间采用点上只需对〖Ｙ〗最上方的几行实施斯消元法。应用实例表明,部分高斯消元仿真方法具有速度快、精度高和功能强的显著优点。     

痛风Ⅰ号水提物治疗痛风及镇痛的实验研究

目的：探讨痛风Ⅰ号对痛风的治疗作用。方法：采用大鼠痛风性关节炎模型及镇痛实验方法，研究痛风Ⅰ号水提物的抗痛风作用及初步机制和镇痛作用。结果：痛风Ⅰ号水提物大剂量有明显抑制大鼠足跖肿胀作用，并可抑制炎性组织中PGE2的生物合成，同时具有一定的镇痛作用。结论：痛风Ⅰ号水提物对痛风有一定的治疗作用，值得进一步研究。     

前列腺素E1与心肌保护研究进展

本文通过阐述前列腺素E1（PGE1）对缺血性心肌损伤及缺血再灌注过程中的抗炎作用，抑制血小板功能，减少氧自由基的产生，减轻钙超载等重要环节的影响，以及减轻细胞凋亡的调节作用等，揭示其在心肌保护中的作用机制。     

前列腺素E1治疗肺心病合并心力衰竭40例疗效观察

目的：探讨前列腺素E1在肺心病心衰中的治疗作用。方法：对本院1997年6月至200l年6月80例肺心病心衰患进行随机对比性研究、分析。结果：治疗一疗程后，治疗组总有效率92．5％，对照组总有效率72．5％，两组的临床疗效有显性差异。结论：肺心病心衰患使用外源性前列腺素E1可获得较好疗效。     

厚藤提取物对胶原诱导关节炎模型大鼠的治疗作用研究

为探究厚藤（Ipomoea pes-caprae）提取物对胶原诱导关节炎（Collagen-induced Arthritis,CIA）模型大鼠的治疗作用,本研究采用牛Ⅱ型胶原诱导建立CIA大鼠模型,观察厚藤提取物高、中、低剂量组（2.271 2,1.135 6,0.567 8 g/kg）对CIA大鼠踝关节肿胀、足跖肿胀、关节炎症评分、踝关节病理切片及血清中前列腺素E2（Prostaglandin E2,PGE2）、类风湿因子（Rheumatoid Factor,RF）、C-反应蛋白（C-reactive Protein,CRP）表达水平的影响。结果表明：与模型组相比,给药干预后,踝关节肿胀度、足跖肿胀度有减轻趋势但无显著性差异（P>0.05）;厚藤提取物高、中剂量组能显著降低关节炎症指数、PGE2、CRP水平（P<0.05,P<0.01）;厚藤提取物各剂量组均能显著降低RF水平（P<0.01）。踝关节病理切片结果显示,厚藤提取物高、中剂量组病变程度相比于模型组均得到减轻。综上可知,厚藤提取物对CIA大鼠具有较好的治疗作用,能减轻关节肿胀、缓解滑膜炎症状,这可能与减少PGE2、RF、CRP表达有关。     

Platinum-group element （PGE） geochemistry of the Emeishan basalts in the Pan-Xi area, SW China

Mantle plume represents massive mantle-derived magma activity and mainly causes the generation of the magma-associated deposits. The economically impor- tant magmatic deposits include Cu-Ni-PGE, V-Ti-Fe, and chromite deposits, e.g., the Bushveld giant PGE…