脾胃虚寒型慢性萎缩性胃炎患者胃经穴位电阻分析

目的：测试并分析脾胃虚寒型慢性萎缩性胃炎(chronic atrophic gastritis, CAG)患者胃经穴位的电阻值,总结疾病状态下胃经的虚实状况,用以指导针灸临床治疗。方法收集2010年1月－2013年12月中国人民解放军第306医院中医科83例脾胃虚寒型CAG患者,应用体表电阻测量法测定双侧胃经厉兑、内庭、陷谷、冲阳、解溪、丰隆、足三里、梁丘穴电阻,以穴位向外侧旁开1 cm处作为非穴区电阻对照点。采用朱氏耳廓全息检测仪,在每个穴位测量点(约0.5 cm2)自动检测20个点的电阻,以平均电阻值作为该穴的电阻值。结果冲阳穴左侧电阻值为(9.64±2.03)k?,右侧电阻值为(9.68±2.02)k?,显著低于同侧其他穴位(P＜0.01);梁丘穴左侧电阻值为(13.44±2.11)k?,右侧电阻值为(13.68±2.12)k?,显著高于同侧其他穴位(P＜0.01)。结论脾胃虚寒型CAG患者胃经穴位电阻值不同,体现了胃经诸穴的不同虚实状况和本病脾胃虚弱为本、气滞血瘀为标的基本病机。     

近红外光谱法快速测定六味地黄丸中马钱苷

目的利用近红外光谱(NIRS)法快速测定不同厂家浓缩六味地黄丸中马钱苷。方法利用HPLC法测定六味地黄丸中马钱苷,运用偏最小二乘法建立NIRS与HPLC测定值之间的多元校正模型。结果马钱苷定量校正模型的内部交叉验证均方差RMSECV为0.049 3,决定系数R2为96.62,对预测集进行预测,预测值与真实值的相关系数r2=97.17,预测均方差RMSEP为0.038 9,方法精密度RSD为1.99%,稳定性RSD为1.13%。结论 NIRS法可准确测定马钱苷,为中成药的快速、无损定量分析提供了依据。     

Isoflavonoids from Astragalus mongholicus protect PC12 cells from toxicity induced by L-glutamate

lsoflavonoids, formononetin, 9,10-dimethoxypterocarpan 3-O-beta-D-glucoside, ononin, calycosin 7-O-glc and calycosin, were isolated from the roots of Astragalus mongholicus Bunge (Leguminosae). The neuroprotective roles and direct antioxidant effects of these isoflavonoids were investigated by using PC12 cell model and DPPH (1,1-diphenyl-2-picrylhydrazyl) assay. Formononetin, ononin and calycosin were found inhibiting glutamate-induced cell injury, with an estimated 50% effective concentration (EC50) of 0.027 microg/ml, 0.047 microg/ml and 0.031 microg/ml, respectively. Pretreatment with them increased the activities of antioxidant enzymes, including superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px), and prevented the release of lactate dehydrogenase (LDH) in glutamate-injured PC12 cells. On the other hand, calycosin 7-O-glc and calycosin showed more scavenging activity to DPPH radicals than formononetin in the cell-free system. The inconsistency between the neuroprotective capabilities of isoflavonoids and their directly scavenging activity to DPPH radicals indicated that formononetin, ononin and calycosin probably depended on increasing endogenous antioxidant and stabilizing the cells' membrane structures to inhibit the cell damage induced by glutamate.     

五仁液有效成分分析

应用GC/MS联用技术研究了五仁液有效成分及其相对含量,发现五仁液中含有丰富的酚类、苯甲酸类、脂肪酸等抗微生物的有效成分。该结果证实了五仁液消毒、杀菌和治疗皮肤病的有效性。     

Differentiating Microaneurysm Pathophysiology in Diabetic Retinopathy Through Objective Analysis of Capillary Nonperfusion,Inflammation, and Pericytes

Microaneurysms are biomarkers of microvascular injury in diabetic retinopathy (DR). Impaired retinal capillary perfusion is a critical pathogenic mechanism in the development of microvascular abnormalities. Targeting fundamental molecular disturbances resulting from capillary nonperfusion, such as increased vascular endothelial growth factor expression, does not always reverse the anatomic complications of DR, suggesting that other pathogenic mechanisms independent of perfusion also play a role. We stratify the effects of capillary nonperfusion, inflammation, and pericyte loss on microaneurysm size and leakage in DR through three-dimensional analysis of 636 microaneurysms using high-resolution confocal scanning laser microscopy. Capillary nonperfusion, pericyte loss, and inflammatory cells were found to be independent predictors of microaneurysm size. Nonperfusion alone without pericyte loss or inflammation was not a significant predictor of microaneurysm leakage. Microaneurysms found in regions without nonperfusion were significantly smaller than those found in regions with nonperfusion, and their size was not associated with pericyte loss or inflammation. In addition, microaneurysm size was a significant predictor of leakage in regions with nonperfusion only. This report refines our understanding of the disparate pathophysiologic mechanisms in DR and provides a histologic rationale for understanding treatment failure for microvascular complications in DR.     

以家庭医生为核心的医养结合模式探索

老龄化问题日益加重,上海市提出的"9073"养老服务体系建设缓解了部分养老问题,但大部分选择居家养老的老人由于日托照料机构少、利用率低等问题,其护理需求无法得到满足;已入住机构养老老人的医疗护理需求因养老机构医疗护理能级不足也无法得到满足,供需失衡问题日益突出.针对目前养老中的医疗需求,政府明确提出结合社区卫生改革现况依托基层医疗服务机构探索适宜的医养结合模式.上海市长宁区程家桥街道社区卫生服务中心将家庭医生签约服务与"9073"养老服务体系相结合,探索形成以家庭医生为核心的医养结合服务新模式,逐步完善社区老年人的养老机制和服务模式.同时通过新模式的探索分析总结其优势和存在问题,并以此提出进一步政策建议.     

细胞膜生物色谱法在中药研究中的应用

中药的效应——物质基础研究一直是中药研究重点和难点，细胞膜生物色谱技术近年来在中药中应用逐渐受到关注，本文对细胞膜生物色谱法的原理、特点、应用现状进行了阐述，对其在中药研究的优势、存在的问题及对策、应用前景进行了分析和展望。通过该方法在中药效应成分分析中的不断应用，以及在实验过程的对该方法不断的完善和优化，细胞膜生物色谱法一定会在中药效应成分的研究中发挥重要的作用。     

补阳还五汤对前脑缺血再灌注损伤沙鼠p38MAPK/神经细胞凋亡通路的影响

目的:探讨补阳还五汤注射对脑缺血再灌注损伤的治疗作用及机制。方法:88只雄性蒙古沙鼠随机分成对照组、模型组和补阳还五汤高剂量组(51.48mg/kg)、低剂量组(25.74mg/kg)。Kirino的方法制作沙鼠前脑缺血模型。术后1、6h,1d、3d、7d尼氏染色观察海马区神经细胞组织形态变化,免疫组化法和Western-Blot法检测海马区磷酸化p38MAPK和Caspase-3蛋白的表达,TUNEL法检测凋亡细胞,术后7～13d八臂迷宫法测试动物学习记忆功能。结果:与对照组比较,脑缺血后海马神经元结构损伤明显、磷酸化p38MAPK表达水平、Caspase-3蛋白表达、凋亡神经细胞数量增加;大鼠的习记忆功能下降;与模型组比较,补阳还五汤组中大鼠的习记忆功能得到改善、神经元形态结构损伤减轻、磷酸化p38MAPK蛋白、Caspase-3蛋白以及神经细胞凋亡数量回降,上述变化在高剂量补阳还五汤组更为明显。结论:补阳还五汤对脑缺血再灌注损伤有治疗作用,其机制与调控p38MAPK信号通路,抑制神经细胞凋亡有关。     

重组人白介素-10对大鼠血管平滑肌细胞增殖和细胞周期的影响

目的　观察重组人白介素 10 (rhIL 10 )分别对肿瘤坏死因子 (TNF α)和血小板源性生长因子 (PDGF BB)刺激下离体大鼠胸主动脉血管平滑肌细胞增殖和细胞周期的影响。方法　体外培养大鼠胸主动脉血管平滑肌细胞 ,采用MTS/PES法确定血管平滑肌细胞的增殖状态 ,应用流式细胞术测定细胞周期。结果　与对照组相比 ,肿瘤坏死因子和血小板源性生长因子均对血管平滑肌细胞增殖具有明显的刺激作用 (P <0 0 5 )。rhIL 10单独应用对血管平滑肌细胞生长没有影响 (P >0 0 5 )。在TNF α和血小板源性生长因子分别刺激下 ,rhIL 10均可抑制血管平滑肌细胞的生长(P <0 0 5 )。流式细胞术测定的结果显示rhIL 10分别可以使TNF α和PDGF BB作用下的VSMCs大部分处于G0 /G1期 ,与对照组相比差异有显著性 (P <0 0 1)。结论　重组人白介素 10可抑制细胞因子和生长因子诱导的血管平滑肌细胞增殖     

大孔吸附树脂分离纯化消癥丸提取液工艺研究

目的研究消癥丸提取液分离纯化工艺。方法以总皂苷、总蒽醌、阿魏酸、橙皮苷比上柱量、比吸附量、比洗脱量作为考察指标,采用Z值综合评分法,优选消癥丸提取液纯化工艺。结果 AB-8型大孔树脂对以上4类成分具有良好的吸附效果,静态上样为最佳上样工艺,最佳工艺参数为提取液质量浓度0.5 g/m L,浸泡时间24 h,柱径高比1∶10,水除杂用量14 BV(BV为柱体积),80%乙醇洗脱,洗脱剂用量10 BV,洗脱体积流量2 BV/h。结论 AB-8型大孔树脂分离纯化消癥丸提取液的方法可行。