伸筋草不同提取部位抗炎镇痛药理实验研究

采用热板法、醋酸扭体法、鼠耳二甲苯致炎法、醋酸引起腹膜炎法、大白鼠足跖浮肿法 ,比较伸筋草不同提取部位抗炎、镇痛的药效作用 ,明确伸筋草有效部位。结果 :伸筋草氯仿提取部位、正丁醇提取部位和水提取部位对热致痛有良好的镇痛作用 ,其中以氯仿提取部位作用最强 ,但 3个提取部位对醋酸引起的扭体反应无影响。 3个提取部位均对二甲苯致小鼠耳炎、醋酸致腹膜炎具有显著抑制作用 ,其中均以氯仿提取部位作用最强 ;氯仿提取部位对甲醛致大鼠踝关节肿胀有显著的消炎作用 ,而其它二个部位则无此作用。结论 :伸筋草具有显著的抗炎镇痛药理作用 ,其有效成分集中在氯仿提取部位     

牛大力对小鼠免疫功能的影响

[目的]观察牛大力水提液对小鼠免疫功能的影响.[方法]选用SPF级KM小鼠,通过计算小鼠脾脏指数、胸腺指数、廓清指数和采用血清溶血素试验法、二硝基氯苯诱导小鼠迟发型变态反应试验法,观察高、中、低剂量牛大力(剂量分别为20、10、5 g·kg-1·d-1)对正常小鼠免疫调节的影响.通过测定免疫抑制小鼠(灌胃给予40 mg·kg-1·d-1醋酸泼尼松)脾脏指数、胸腺指数以及廓清指数,观察高、中、低剂量牛大力(剂量同前)对免疫低下小鼠免疫调节的影响.[结果]牛大力对正常小鼠脾脏指数、胸腺指数以及廓清指数均无显著性影响,但能不同程度地增加免疫低下小鼠的脾脏指数、胸腺指数及廓清指数(P<0.05或P<0.01).牛大力能显著提高小鼠血清溶血素含量(P<0.05),不同程度抑制小鼠迟发型皮肤过敏反应,但差异无显著性意义(与模型组比较,P>0.05).[结论]牛大力能不同程度地提高正常小鼠和免疫功能低下小鼠的免疫功能.     

尼莫通对大鼠三叉神经刺激后血浆神经肽变化的影响

目的　观察尼莫通对三叉神经刺激后血浆神经肽变化的影响。方法　 30只 SD大鼠随机分为假手术组、刺激组及尼莫通组。采用放射免疫法测定各组血浆中 P物质 (SP)、血管活性肠肽 (VIP)、神经肽 Y(NPY)、降钙素基因相关肽 (CGRP)、β-内啡肽 (β- EP)、强啡肽 A(Dyn A)与亮啡肽 (L EK)含量。结果　与假手术组比较 ,刺激组 NPY、CGRP、SP与 VIP升高 ;与刺激组比较 ,尼莫通组 SP、NPY降低 ,β- EP升高。结论　三叉神经受刺激后 ,引起血管舒缩的神经肽大量释放 ,尼莫通可部分地抑制这种释放 ,并可导致镇痛物质β- EP的升高。     

High frequency of Machado-Joseph disease identified in Southeastern Chinese kindreds with spinocerebellar ataxia

Background  

Machado-Joseph disease (MJD), caused by a CAG repeat expansion located in exon10 of the ATXN3 gene, is now regarded as one of the most common spinocerebellar ataxia (SCA) in the world. The relative frequency of MJD among SCA has previously been estimated at about 50% in the Chinese population and has been reported to be related to the frequency of large normal alleles in some populations. Taq polymerase has been used for PCR in nearly all studies reported previously.     

2型糖尿病并发周围神经病变患者外周血白细胞介素6的改变及其临床意义

目的探讨2型糖尿病周围神经病变(DPN)患者外周血白细胞介素6(IL-6)的改变及其临床意义。方法选取100例2型糖尿病患者,分为糖尿病周围神经病变组(DPN组)50例和无糖尿病周围神经病变组(NDPN组)50例,另选择50例健康人群作为对照组(NC组)。测定外周血IL-6含量,比较三组间IL-6水平差异;应用Pearson相关分析,探讨影响血清IL-6浓度的相关影响因素;应用Logistic回归分析,了解DPN发病的独立影响因素。结果 (1)T2DM组IL-6水平显著高于NC组,DPN组IL-6水平显著高于T2DM组(均P0.01);(2)Pearson相关分析显示,血清IL-6水平与运动及感觉神经传导速度均呈负相关(r值分别为-0.488,-0.389,均P0.05),与胰岛功能指数呈负相关(r=-0.384,P0.01)。Logistic回归分析发现体质量指数、收缩压、IL-6为DPN发病的独立危险因素。结论 2型糖尿病并发周围神经病变患者外周血IL-6水平明显增加,与DPN发病密切相关。     

Platelet microparticles-containing miR-4306 inhibits human monocyte-derived macrophages migration through VEGFA/ERK1/2/NF-κB signaling pathways

Platelets are major sources of microparticles (MPs) in peripheral bloodstream, and platelet-secreted MPs (P-MPs) transfer biological information to neighboring cells. In the present study, we found that the platelet- and P-MPs-derived microRNA-4306 (miR-4306) expression were downregulated in coronary artery disease (CAD) and platelet-derived miR-4306 was an independent poor prognostic factor in CAD. Plasma miRNA-4306 mainly cofractionated with MPs instead of Argonaute2 complexes or HDL. P-MPs could effectively deliver miR-4306 into human monocyte-derived macrophages (HMDMs). MiR-4306 noticeably inhibited the HMDMs migration in vitro and reduced the number of macrophage cells in cardiac tissue in myocardial infarction mice. This functional impact of miR-4306 was mediated directly through VEGFA to inhibit ERK/NF-κB signaling. In conclusion, our study suggested that intercellular transfer of miR-4306 by platelet microparticles inhibited the HMDMs migration through VEGFA/ERK1/2/NF-κB signaling pathways.     

Mutation analysis of 218 Chinese patients with Wilson disease revealed no correlation between the canine copper toxicosis gene MURR1 and Wilson disease

Wilson disease (WD) is the most common disorder resulting in hepatic copper overload. A similar form of copper-associated cirrhosis caused by mutations of the canine copper toxicosis MURR1 gene is also observed in Bedlington terriers. Recent studies indicate that MURR1 might influence human copper metabolism and the clinical presentations of WD. However, the correlation between the MURR1 gene and the Chinese patients with WD has not been reported. In the present study, all three exons of the MURR1 gene including the intron–exon boundaries were directly sequenced in 120 unrelated healthy Chinese and 218 unrelated Chinese patients with WD. No mutations were detected in coding and splice site sequence in the human MURR1 gene. A novel polymorphism 3′+119T→A in the 3′ untranslated region (UTR) was identified in three healthy individuals and four patients with two disease-causing mutations in the ATP7B gene and a great diversity of clinical presentations. Of the ATP7B mutations reported here, Gly1268Arg is a novel one. Also, the previously described nucleotide change IVS2+63C→G was detected in 31.66% of normal chromosomes and 26.15% of WD chromosomes. The results have indicated that there is no correlation between MURR1 and WD in the Chinese population.