盐酸氯普鲁卡因的临床研究进展

盐酸氯普鲁卡因属苯甲酸酯类的局部麻醉药,是在普鲁卡因的结构基础上引入-Cl基因,在化学结构上形成了麻醉效应强、麻醉后恢复快的优点.可以安全广泛的应用于临床麻醉.此文就盐酸氯普鲁卡因的硬膜外麻醉、脊髓麻醉、局部浸润麻醉、外周神经阻滞和区域静脉麻醉等方面的临床研究进展进行综述.     

速效救心丸干预心肌缺血/再灌注大鼠线粒体通透性转换孔及心肌细胞凋亡

目的观察速效救心丸(川芎、冰片)对心肌缺血/再灌注大鼠线粒体通透性转换孔及心肌细胞凋亡的影响。方法将55只SPF级Wistar大鼠随机分为空白组,模型组,速效救心丸低、中、高剂量组(每组11只)。药物组给予对应剂量的速效救心丸混悬液灌胃,空白组与模型组给予同等容积的双蒸水灌胃,连续灌胃7 d结束后结扎左冠状动脉前降支建立心肌缺血/再灌注大鼠模型。观察速效救心丸干预后心肌线粒体通透性转换孔(MPTP)、细胞色素C的表达情况,并采用TUNEL检测心肌细胞凋亡,HE染色观察大鼠心肌细胞形态。结果与空白组比较,模型组MPTP开放程度增加,细胞色素C水平升高(P0.05),TUNEL的阳性反应面积率显著上升(P0.01)。速效救心丸高、中、低剂量组的TUNEL阳性反应面积率等较模型组降低(P0.01),但药物组间比较无统计学差异。速效救心丸高剂量组的MPTP开放程度(P0.05)、细胞色素C水平(P0.01)较模型组降低。结论速效救心丸对大鼠心肌缺血/再灌注损伤具有一定的保护作用,其机制可能与抑制MPTP的开放有关。     

广藿香内生真菌撕裂耙齿菌A878次级代谢产物研究

目的 研究药用植物广藿香Pogostemon cablin内生真菌撕裂耙齿菌Irpex laceratus A878的活性次级代谢产物。方法 运用硅胶、Sephadex LH-20、HPLC等多种柱色谱技术以及重结晶方法对发酵产物进行分离纯化,并利用¹H-和¹³C-NMR、UV等谱学方法鉴定化合物结构。采用SRB法和Griess法测定化合物的生物活性。结果 从广藿香内生真菌撕裂耙齿菌A878固体发酵产物中分离鉴定了2个新化合物和10个已知化合物。分别为撕裂耙齿菌内酯A(1)、撕裂耙齿菌内酯B(2)、细胞松弛素H(3)、细胞松弛素J(4)、18-甲氧基细胞松弛素J(5)、去乙酰基细胞松弛素H(6)、细胞松弛素J₃(7)、拟茎点霉(口山)酮A(8)、狄瑟酚A(9)、桔青霉三酚A(10)、(22E,24R)-麦角甾-5,7,22-三烯-3β-醇(11)和1S,2R,4S-三羟基-对-薄荷烷(12)。结论 化合物1、2为新的吡喃内酯类化合物。活性研究表明化合物4、5和9对人神经癌SF-268细胞、人乳腺癌MCF-7细胞、人肝癌H...     

榄香烯对肺腺癌PC9/ZD细胞株吉非替尼耐药的逆转作用

目的:探讨β-榄香烯体外逆转人肺腺癌细胞PC9耐吉非替尼的作用及其机制。方法:使用噻唑蓝(MTT)比色法测定不同药物处理对耐吉非替尼的肺腺癌细胞株PC9/ZD的抑制率,FCM检测各组细胞的凋亡情况,Western blot检测PC9/ZD各组细胞磷酸化细胞外调节激酶(p-Erk)及磷酸化AKT(p-Akt)的表达水平。结果:MTT实验结果显示PC9/ZD的联合用药组抑制率(41.69±5.06)%和单药组抑制率(38.20±5.54)%分别与吉非替尼对照组比较,差异有统计学意义(P<0.05);流式细胞检测结果显示与吉非替尼对照组比较,联合用药组的凋亡率(15.17±2.01)%与单药组的凋亡率(7.59±1.35)%与吉非替尼对照组(5.63±1.19)%比较作用显著;Western blot检测检测发现,联合用药组的p-Akt和P-Erk蛋白表达量明显减少。结论:β-榄香烯具有逆转PC9/ZD细胞耐吉非替尼的作用,可能与下调耐药细胞内p-Erk、p-Akt表达水平相关。     

RPS20 miRNA质粒载体的CT26细胞转染条件优化研究

目的探讨阳离子脂质体法转染CT26细胞适宜的转染条件,为小鼠体内以RNA干扰法进行脾虚证相关基因RPS20的功能鉴定提供参考。方法以6孔培养板培养CT26细胞,利用阳离子脂质体转染pcDNATM6.2-GW/EmGFP-miR-neg Control plasmid进入CT26细胞,荧光显微镜、流式细胞仪两种方式观察不同剂量的质粒和转染试剂对转染效率的影响。结果荧光显微镜下细胞计数法检测转染效率,4.0μg和6.0μg质粒的转染效率无明显差异;流式细胞仪检测转染效率,以Lipofectamine2000 15.0μL+质粒4μg转染效率最高,平均为25.3%。结论 6孔培养板,4.0μg质粒+15.0 μL Lipofectamine2000为CT26细胞优化的转染条件。     

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??OBJECTIVE To evaluate the efficacy, safety and economy of tramadol and hydromorphone combined with flurbiprofen axetil in the treatment of PCIA for postoperative cesarean through the empirical study, optimize the drug treatment program and provide certain evidence-based medicine and pharmacoeconomics basis for clinical use of drugs. METHODS Included 240 cases of maternal, these maternal need to use PCIA for postoperative analgesia and meet the inclusion and exclusion criteria. The maternal samples included in the study were divided into two groups: tramadol(tramadol 2 mg ??kg^-1+flurbiprofen axetil 5 mg??kg^-1) and hydromorphone(hydromorphone 0.04 mg ??kg^-1+flurbiprofen axetil 5 mg??kg^-1). The efficacy index, safety index and cost index of the two groups were observed. The effectiveness, adverse reactions and cost data were collected. Statistical analysis and cost effectiveness analysis were used to evaluate the economic effects of the two groups. RESULTS The analgesic effect of tramadol group was same as the hydromorphone group, but the total cost of analgesia in tramadol group was lower than that in hydromorphone group, the results of the minimum cost analysis showed that the tramadol regimen was superior and the results were stable. CONCLUSION The PCIA regimen of tramadol group is superior to that of the hydromorphone group, considering the efficacy, safety and economy.     

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??OBJECTIVE To establish a capillary zone electrophoresis(CZE)-based method for charge heterogeneity analysis of IgG2 monoclonal antibody. METHODS The concentrations of TETA and EACA, pH of separation buffer and temperature of capillary were optimized, to obtain a method which can efficiently separate the charge variants of IgG2 mabs. The reproducibility and repeatability of the optimized CZE method were validated and a battery of mabs were evaluated. RESULTS The separation effect was significantly influenced by TETA/EACA concentration, pH and separation temperature. Through a series of optimization, a CZE method which showed good resolution and precision(RSD of area percentage was below 3.0% was established and the method parameters were as below: 400 mmol??L^-1 EACA/0.05% TETA, pH 6.2, separation under 30 kV voltage at 35 ??. This method was also suitable for IgG1 and IgG4 mabscharge heterogeneity analysis. Based on the specific electrophorogram and migration time, it could also be used as an identification method for monoclonal antibodies. CONCLUSION The optimized CZE method can efficiently separate the charge variants of IgG2 mabs and shows good precision and specificity, which can be used to analyze the charge heterogeneity and identification of monoclonal antibodies.     

提取时间、溶剂对丹参提取物质量的影响研究

目的：研究提取时间、溶剂对丹参中主要活性成分含量的影响，为GEP建设提供基础数据和理论指导。方法：用HPLC在不同提取时间下分别测定丹参90％乙醇提取液和水提取液中丹酚酸B和丹参酮ⅡA的含量。结果：提取时间和提取溶剂对丹参提取液中丹酚酸B和丹参酮ⅡA的含量影响显著。结论：丹参中丹酚酸类成分宜用水提取，提取的时间为40～50min；丹参酮类成分宜用乙醇提取，时间为20～30min。     

神经心理因素与贝尔麻痹针刺治疗疗效关系观察

目的研究神经心理因素对贝尔麻痹针刺治疗和总体预后的影响。方法选择贝尔麻痹患者50例,分为手法组和非手法组进行针刺治疗,采用针灸疗效主观感受量表、卡特尔人格因素测试、汉密尔顿焦虑量表(HAMA)进行评分,采用House-Brackmann分级标准评定治疗效果。结果通过House Brackmann评分,针刺治疗总有效率78.0%(39/50);且手法组疗效[89.2%(25/28)]优于非手法组[63.6%(14/22)],差异有统计学意义(P0.01);针刺得气感受进行视觉模拟评分结果显示,与非手法组比较,手法组患者得气分值及医者得气分值高于非手法组(P0.01);通过卡特尔人格因素测试(16PF)测试,乐群性、聪慧性、兴奋性、敢为性、独立性人群较为容易得气,且人格因素与疗效有明显相关性;通过HAMA评分,焦虑者占92.0%(46/50),且焦虑程度与疗效呈负相关(r=-0.9491,P0.05)。结论神经心理因素在贝尔麻痹的治疗中发挥着重要作用,应采取药物、针灸、心理干预及康复治疗等多种手段结合以改善预后。     

人参药材色谱指纹图谱分析方法研究

目的:采用HPLC法建立了人参药材指纹图谱。方法:色谱柱:Zorbax SB-C18柱(250 mm×4.6 mm,5μm),流动相:乙腈-水(梯度洗脱),检测波长:203 nm,柱温:40℃,流速:1.0 mL/m in,分析时间:90 m in。结果:共标示出人参药材指纹图谱中18个共有峰。利用指纹图谱相似度测试软件,以夹角余弦为测度,测得10批人参药材指纹图谱相似度结果均在0.90~1.00之间。结论:本实验所建立的人参药材指纹图谱分析方法准确、重复性好,为有效控制人参药材的质量提供了可靠依据。