HPLC-ELSD法测定积雪草中积雪草苷的含量

目的:建立积雪草中主要生物活性成分积雪草苷的HPLC-ELSD含量测定方法.方法:应用LabAlliance ELSD MODEL-200蒸发光散射检测器;色谱柱为Aichrom Reliasil C18柱(250 mm×4.6 mm,5μm),以甲醇-水(55:45)为流动相,流速1.0 mL/min,柱温为35℃,测定积雪草苷的含量.结果:积雪草苷在1.216～6.08 μg之间呈良好的线性关系(r=0.9994),精密度、重现性RSD均小于2%,平均回收率为97.1%.结论:此方法简便快速、选择性好,适用于积雪草中积雪草苷的质量分析.     

积雪草化学成分研究

目的研究积雪草Centella asiatica的化学成分。方法采用各种色谱技术进行分离纯化,通过理化性质和波谱分析进行结构鉴定。结果从积雪草中共分离得到14个化合物,其结构鉴定为β-谷甾醇(Ⅰ)、二十六醇辛酸酯(Ⅱ)、山柰酚(Ⅲ)、槲皮素(Ⅳ)、胡萝卜苷(Ⅴ)、香草酸(Ⅵ)、丁二酸(Ⅶ)、积雪草酸(Ⅷ)、羟基积雪草酸(Ⅸ)、ter-minolic acid(Ⅹ)、积雪草苷(Ⅺ)、积雪草二糖苷(Ⅻ)、羟基积雪草苷、积雪草苷-B。结论化合物为一新化合物;羟基积雪草酸和terminolic acid、羟基积雪草苷和积雪草苷-B为两对同分异构体。     

手性流动相添加剂法测定积雪草中积雪草总苷的量及其总苷特征图谱

目的 以β-环糊精为流动相添加剂,拆分积雪草药材及其总苷中羟基积雪草苷和积雪草苷,建立羟基积雪草苷和积雪草苷的定量测定方法,同时建立积雪草总苷的高效液相色谱特征图谱。方法 采用 Dikma Diamonsil^TM C₁₈ (250 mm×4.6 mm, 5 μm) 色谱柱;流动相为乙腈-2 mmol/L β-环糊精溶液 (24∶76);柱温 30 ℃;体积流量 1.0 mL/min;检测波长 205 nm;理论塔板数按积雪草苷峰计算应不低于 4 000。结果 β-环糊精的加入很好地分离积雪草药材及其总苷中的羟基积雪草苷和积雪草苷,满足了定量分析的要求,其中有效成分羟基积雪草苷和积雪草苷的线性范围分别为 0.181～18.1 μg (r=0.999 98) 和 0.195～19.5 μg (r=0.999 98) ,积雪草药材的平均加样回收率 (n=9) 分别为 101.2% 和 101.6%,积雪草总苷的平均加样回收率 (n=9) 分别为 100.3% 和 99.3%,11 批次的积雪草总苷样品的高效液相色谱特征图谱中确定 6 个共有峰作为定性的指标峰。结论 本法简便快速、结果准确、重现性好,可用于积雪草药材及其总苷的质量控制。     

毛细管区带电泳法测定积雪草配方颗粒中积雪草苷的含量

目的:建立测定积雪草配方颗粒中积雪草苷含量的毛细管区带电泳法(CZE).方法:积雪草配方颗粒用甲醇超声提取,用未涂渍熔融石英毛细管(内径75 μm ,长度48.5 cm,有效长度40 cm),以25 mmol*L-1硼砂溶液(含50%甲醇)为背景电解质溶液(pH 9.1),运行电压27 kV,温度23℃,压力进样5 kPa×5 s, 检测波长为206 nm.结果:在11 min内积雪草苷与内标及其他成分能达到基线分离,最低检测限0.010 3 mg*ml-1,积雪草苷在0.048 6～0.173 5 mg*ml-1范围内呈良好的线性关系 (r=0.999 8),加样回收率为(97.6±2.6)%,低、中、高3种浓度的日内和日间的精密度结果分别为3.5%、2.1%、2.6%和4.1%、2.8%、3.7%,3个批号的样品中积雪草苷的含量分别为(0.39±0.01)%、(1.17±0.02)%、(1.74±0.04)%.结论:毛细管电泳法测定结果准确可靠,方法简便、快速、环保,可用于样品中积雪草苷的含量测定.     

积雪草甙、羟基积雪草甙对体外培养人胚胎成纤维细胞的影响

目的研究积雪草甙（asiaticoside,Ad）和羟基积雪草甙（madecassoside,Md）对体外培养人胚胎成纤维细胞（Human embryonic skin fibroblasts,HESFb）增殖过程的影响。方法在不同浓度（0μg/ml、10μg/ml、50μg/ml、100μg/ml、200μg/ml、400μg/ml）Ad和Md的环境下对人胚胎细胞进行体外培养,用CCK-8试剂盒通过酶标仪检测不同培养时间（0、1、2、3、4、5d）HESFb的OD值,用SPSS13.0统计软件进行统计分析。结果在实验时间内Ad和Md在10μg/ml、50μg/ml、100μg/ml、200μg/ml浓度时均对人胚胎成纤维细胞的增殖有促进作用,200μg/ml浓度时最明显,且Ad比Md作用强。两组在400μg/ml浓度时均有抑制作用。结论在一定浓度和培养时间内一定剂量的Ad和Md对体外培养的HESFb增殖有促进作用,同剂量相比Ad比Md明显。而较高剂量的时候均可出现抑制作用。     

复方积雪草颗粒提取工艺研究

目的 研究复方积雪草颗粒最佳提取工艺。方法 采用正交试验法进行优选，HPLC法测定积雪草苷、黄芪甲苷的含量。结果 乙醇浓度、溶媒量、提取时间、提取次数对积雪草苷、黄芪甲苷提取率均有显著影响。结论最佳提取工艺为药材10倍量50％乙醇，提取2次，每次3h。     

滴定法测定积雪草中积雪草总苷元含量

目的建立一种快速测定积雪草总苷元的方法。方法用一定体积过量的氢氧化钠乙醇标准溶液（0．1mmol／L）中和积雪草总苷元,再以酚酞为指示剂,用盐酸乙醇标准溶液（0．1mmol／L）反滴定过量的氢氧化钠,根据盐酸乙醇标准溶液的消耗量计算出积雪草总苷元含量。结果测定含量25％-80％的积雪草总苷元样品5份,平均相对标准偏差RSD=1．92％。平均加样回收率R=98．3％。结论该方法简单、准确、快捷,适用于积雪草总苷元的产品质量控制。     

伞形科天胡荽亚科植物化学成分和药理作用

对伞形科天胡荽亚科的天胡荽属和积雪草属植物的化学成分和药理作用进行了综述.     

积雪草苷的抗惊厥作用研究

目的 研究积雪草苷的抗惊厥作用,观察不同剂量积雪草苷对小鼠中枢镇静作用.方法 采用戊巴比妥钠诱导睡眠实验考察积雪草苷对中枢的镇静催眠作用,采用硝酸士的宁所致小鼠惊厥实验考查积雪草苷的抗惊厥作用.结果 积雪草苷对中枢神经不产生镇静催眠作用;同时使小鼠出现惊厥的时间与死亡时间明显延长.结论 积雪草苷具有良好的抗惊厥作用.     

积雪草苷改善阿尔茨海默病大鼠记忆能力

目的:探讨积雪草苷对Aβ1-42诱导阿尔茨海默病模型大鼠学习记忆能力,海马细胞线粒体形态影响。方法:60只SD大鼠随机分为模型组、假手术组、空白组,积雪草苷5、15、45 mg.kg-1组,Morris水迷宫检测大鼠空间和学习记忆能力,HE染色观察大鼠海马区细胞病理改变,免疫组化检测β淀粉样沉积,电镜观察大鼠海马细胞线粒体结构改变。结果:与假手术组相比,模型组大鼠逃避潜伏期显著增加、跨越平台次数显著降低,与模型组比较,积雪草苷干预组大鼠学习记忆能力明显改善,有统计学意义(P<0.05)。与模型组比较,积雪草苷干预组大鼠海马区细胞形态完整,β淀粉样沉积明显减少,电镜结果线粒体结构比较完整,肿胀明显减轻,呈剂量依赖性,其中积雪草苷5mg.kg-1改善不明显。结论:积雪草苷能够改善Aβ1-42致阿尔茨海默病模型大鼠的学习记忆能力,改善海马细胞线粒体结构。     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

Dr.Zhang Ren''''s Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.     

Luo Lingjie''''s Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

猪肺磷脂注射液联合经鼻持续气道正压通气对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性的影响

目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P＜0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P＜0.05),PaCO2均随观察时间的延长而降低(P＜0.05).观察组治疗有效率为87.5％,显著高于对照组的70.0％ (P ＜0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P＜0.05),且观察组明显低于对照组(P＜0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.     

Survey and practice of reporting quality of randomized controlled clinical trials on traditional Chinese medicine

Evidence obtained from randomized controlled trials （RCTs） has been generally accepted as the gold standard in the evaluation of clinical effectiveness. Readers need to understand the trial design, implementation, results, analysis and interpretation, so as to fully Jnderstand the results of RCTs. Thus, the investigators of RCTs have to report these items in a complete, accurate and clear manner. Since 1998, we have conducted several evaluations on the reporting quality of RCTs published in Chinese journals on traditional Chinese medicine （TCM） and results have shown that there is an urgent need for higher quality RCTs on TCM.     

TCM Treatment of Ankylosing Spondylitis by Tonifying the Kidney and Strengthening the Governor Vessel

Ankylosing spondylitis is a chronic and progressive disorder with inflammation mainly involving the central axis joints. It mainly affects the cervical spine and the lumbosacral area, with the pathogenesis closely related to the kidney and the Governor Vessel (GV). TCM holds that the syndrome is deficiency in origin and excess in superficiality, which is due to insufficiency of the kidney, deficiency of GV, and blocking of the channels with the invasion of exogenous evil, leading to poor circulation of qi and blood and malnutrition of the bones, muscles and joints. The TCM method of tonifying the kidney and strengthening GV to regulate circulation of qi and blood and check the arthralgia pain should be adopted, with the Kidney-Tonifying and GV Strengthening Decoction (益肾强督汤) prescribed.     

IMPROVING P-gp EXPRESSION IN HUMAN MONONUCLEAR CELLS IN VITRO TRANSFECTED BY MULTIDRUG RESISTANCE-1 mRNA

CHEMOTHERAPY playsa greatrolein the treat- ment of malignanttumors,especiallyingynecolo- gicalones.But inanticancerchemotherapy,leuko-cytopeniaisfrequentlytheprimarydose-limitingsideeffect factor.Moreover,cancersarefrequentlychemoresistantbe-causeof overexpressionof P-glycoprotein(P-gp), which isencodedby multidrugresistancegene (MDR1 ) and detectableinup to50% ofhuman cancersand renderscellsresistancetoanticancerdrugs.The safetyand potentialtherapeuticbenefitof mdr1 gene transferredto h…