UPLC测定醉鱼草不同部位中4种黄酮类成分

目的:建立超高效液相色谱(UPLC)同时测定醉鱼草Buddleja lindleyana茎、叶、花、果实中蒙花苷、木犀草素、金合欢-7-O-β-D-葡萄糖苷、金合欢素4种黄酮类成分含量方法,比较在醉鱼草各个部位中4种成分的分布情况。方法:采用Waters Acquity BEH C18色谱柱(2.1 mm×50 mm,1.7μm),流动相乙腈-0.1%甲酸水溶液(梯度洗脱),流速0.15 m L·min-1,检测波长330 nm,柱温30℃,进样体积2μL。结果:蒙花苷、木犀草素、金合欢-7-O-β-D-葡萄糖苷和金合欢素的进样量分别在0.002 0~0.600 3μg(r=0.999 7),0.000 4~0.040 1μg(r=0.999 9),0.000 4~0.039 9μg(r=0.999 9),0.000 2~0.020 0μg(r=0.999 9)和峰面积呈良好的线性关系,仪器精密度及方法重复性均良好,符合定量测定要求。平均回收率分别为100.2%,97.1%,94.3%,92.4%,RSD分别为0.7%,1.1%,2.3%,1.9%。结论:4种黄酮类成分含量在醉鱼草不同部位存在较大差异,其中醉鱼草花中4种黄酮总含量最高,通过比较各不同部位成分的含量差异,为醉鱼草的进一步开发利用提供实验依据。该检测方法操作简单,分离效果好,灵敏度高,可用于醉鱼草不同部位中多个黄酮成分的含量测定。     

UPLC法测定冠脉康片中3种成分含量

目的:建立UPLC法同时测定冠脉康片中3种成分(三七皂苷R_1、人参皂苷Rg_1及人参皂苷Rb1)的含量。方法:采用Waters ACQUITY UPLCBEH C_(18)柱(5mm×210mm,1.7μm),以乙腈-水溶液为流动相,梯度洗脱,流速为0.6mL·min-1,检测波长为203nm,柱温为25℃。结果:人参皂苷Rg1、人参皂苷Rb_1及三七皂苷R_1的线性范围分别为0.003 8~0.041 8μg(r=0.999 7)、0.062 4~0.686 4μg(r=0.999 7)、0.005 8~0.063 8μg(r=0.999 9);平均加样回收率分别为101.24%、98.12%、100.33%;RSD(n=6)分别为1.34%、1.82%、1.55%。结论:该方法稳定、快速、专属性强,可用于冠脉康片中人参皂苷Rg1、人参皂苷Rb1及三七皂苷R_1的含量测定及其质量控制。     

HPLC-UV-ELSD同时测定玄参中5种成分的含量

目的:采用HPLC-UV-ELSD同时测定玄参药材中桃叶珊瑚苷、哈帕苷、哈帕俄苷、安哥拉苷C、肉桂酸的含量.方法:应用SHIMADZU C_(18)色谱柱(4.6 mm×250 mm,5μm);以乙腈-0.4%醋酸溶液为流动相,进行二元梯度洗脱;紫外检测波长为280 nm,蒸发光散射检测器漂移管温度105℃.结果:桃叶珊瑚苷、哈巴苷、哈巴俄苷、安哥拉苷C和肉桂酸5种成分能够达到很好的分离.其线性范围分别是0.752 0～13.54 μg,r=0.999 3(n=6):0.828 0～14.90 μg,r=0.999 4(n=6):0.636 0～11.45μg,r=0.999 7(n=6);0.544 0～9.792 μg,r=0.999 7(n=6);0.010 8～0.193 9μg,r=0.999 9(n=6).平均回收率分别为98.12%,RSD 2.3%(n=6);99.14%,RSD 1.5%(n=6):100.2%,RSD 1.9%(n=6):98.17%,RSD 1.7%(n=6);100.4%,RSD 0.50%(n=6).结论:该方法可同时测定玄参药材中上述5种成分的含量.     

UPLC测定不同产地菟丝子药材中6种黄酮类成分的含量

目的:采用UPLC建立同时测定菟丝子药材中金丝桃苷、异槲皮苷、紫云英苷、槲皮素、山柰酚、异鼠李素6种黄酮类成分含量的方法。方法:以内蒙古产菟丝子为代表建立菟丝子药材中6种黄酮类成分的定量方法,用此方法测定12批不同产地菟丝子药材中6种黄酮类成分的含量。色谱条件为Agilent Eclipse Plus C_(18)色谱柱(2.1 mm×50 mm,1.8μm),流动相乙腈-0.1%甲酸水梯度洗脱,流速0.21 m L·min~(-1),柱温30℃,检测波长360 nm。结果:金丝桃苷、异槲皮苷、紫云英苷、槲皮素、山柰酚、异鼠李素分别在0.046 8~0.748 8μg(r=0.999 9),0.024 2~0.387 2μg(r=0.999 9),0.088 2~1.411 2μg(r=0.999 9),0.002 3~0.037 0μg(r=0.999 7),0.028 8~0.460 8μg(r=0.999 6)和0.002 3~0.037 0μg(r=0.999 4)线性关系良好,检出限分别为0.292 5,0.302 5,0.367 5,0.289 0,0.360 0,0.286 0 mg·L~(-1),定量限分别为0.877 5,1.210 0,1.470 0,1.012 0,1.260 0,1.215 5 mg·L~(-1)。平均回收率分别为99.95%,99.78%,99.53%,99.38%,100.03%,99.35%,RSD分别为1.0%,1.2%,1.0%,1.4%,1.1%,0.5%。12批来自不同产地的菟丝子6种黄酮类成分含量差异较大。结论:该方法专属性强、重复性好、快速、稳定、可控,为科学评价及有效控制菟丝子药材的质量提供依据。     

HPLC-CAD法测定不同产地柴胡药材中柴胡皂苷

目的建立HPLC-CAD法测定不同产地柴胡中柴胡皂苷a、柴胡皂苷b2、柴胡皂苷d的含有量。方法柴胡甲醇提取液的分析采用Waters C18柱(4.6 mm×15 0 mm,5μm);流动相乙腈-水,梯度洗脱;体积流量1.0 m L/min;柱温20℃;CAD检测器。结果 3种柴胡皂苷分别在0.088~8.8μg(r=0.999 1)、0.044~4.4μg(r=0.999 0)、0.088~8.8μg(r=0.998 5)范围内线性关系良好,平均加样回收率99.04%~100.42%。结论该方法操作简便,结果准确,重复性好,可用于柴胡药材的质量评价。     

UPLC法同时测定痛泻要方及其破壁饮片中7种活性成分的含量

目的建立超高效液相色谱(UPLC)法同时测定痛泻要方(TXYF)及其破壁饮片中芍药内酯苷、芍药苷、升麻素、芸香柚皮苷、5-O-甲基维斯阿米醇苷、橙皮苷、川陈皮素7种成分的含量,为痛泻要方破壁饮片的质量控制提供依据。方法以UPLC法,色谱柱为Waters Acquity UPLC BEH C_(18)(100 mm×2.1 mm,1.7μm)为色谱柱,采用乙腈-0.1%甲酸为流动相,梯度洗脱;流速:0.3 m L·min~(-1);检测波长为240 nm;柱温35℃;进样量2μL。测定痛泻要方饮片及破壁饮片中芍药内酯苷、芍药苷、升麻素、芸香柚皮苷、5-O-甲基维斯阿米醇苷、橙皮苷、川陈皮素7种成分的含量。结果芍药内酯苷、芍药苷、升麻素、芸香柚皮苷、5-O-甲基维斯阿米醇苷、橙皮苷、川陈皮素分别在0.031 4~1.006μg(r=0.999 8),0.103 8~3.32μg(r=0.999 8),0.007 8~0.248μg(r=0.999 4),0.02~0.64μg(r=0.999 9),0.013 4~0.43μg(r=1),0.012 7~0.407μg(r=0.999 8),0.000 5~0.015 5μg(r=0.999 8)浓度范围内呈现良好的线性关系;平均回收率:痛泻要方饮片分别为99.67%、99.68%、99.75%、99.70%、99.19%、99.92%、99.85%;痛泻要方破壁饮片分别为99.41%、100.06%、99.62%、99.92%、99.77%、99.97%、99.91%(n=9)。结论该方法简便、快速、精确、重复性良好,结果准确可靠,可用于痛泻要方饮片及破壁饮片的质量控制。     

HPLC法测定柴胡疏肝胶囊中柴胡皂苷a、d的含量

目的建立同时测定柴胡疏肝胶囊中柴胡皂苷a、d含量的方法。方法采用高效液相色谱法,色谱柱为Agilent C18柱(250 mm x 4.6mm,5μm),流动相为乙腈-水(梯度洗脱),流速为1.0mL/mi n,柱温为30℃,检测波长为210nm,进样量为10μL。结果柴胡皂苷a、d检测浓度分别在2.958~19.72μg/μL(r=0.999 8),3.09~20.6μg/μL(r=0.999 7)范围内与各自峰面积积分值呈良好的线性关系;平均加样回收率分别为99.33%、99.53%,RSD分别为0.84%、0.64%(n=6)。结论本方法简便、准确、重复性好,可用于柴胡疏肝胶囊的质量控制。     

双波长RP-HPLC法同时测定败酱草中5种有机酸类成分的含量

目的建立双波长反相高效液相色谱法(RP-HPLC)同时测定败酱草中5种有机酸类成分原儿茶酸、绿原酸、咖啡酸、异绿原酸A、异绿原酸C的含量。方法采用反相高效液相色谱法,色谱柱:Odyssil C18(250mm×4.6 mm,5μm);以乙腈-0.1%磷酸溶液(10∶90)作为流动相,梯度洗脱;检测波长:260、327 nm;流速:1.0 mL·min~(-1);柱温:30℃。结果原儿茶酸、绿原酸、咖啡酸、异绿原酸A、异绿原酸C进样量分别在0.813～19.833μg(r=0.999 7),0.902～19.853μg(r=0.999 8),0.767～19.799μg(r=0.999 6),0.887～20.001μg(r=0.999 8)和1.048～19.877μg(r=0.999 7)范围内与峰面积线性关系良好,平均加样回收率分别为104.19%(RSD=2.76%,n=6),98.36%(RSD=1.89%,n=6),102.02%(RSD=2.81%,n=6),99.34%(RSD=1.94%,n=6),105.03%(RSD=3.37%,n=6)。结论该方法灵敏度高、专属性强、重复性好,可为败酱草药材质量控制标准的建立提供参考。     

降压片质量标准提高研究

目的:建立降压片的质量控制方法。方法:采用薄层色谱法对降压片中决明子、山楂进行定性鉴别;HPLC法测定黄芩中黄芩苷、汉黄芩苷、黄芩素、汉黄芩素含量,色谱柱为Agilent ZORBAX SB-C18(250 mm×4.6 mm,5μm);柱温为30℃;流动相为甲醇(A)-0.2%磷酸溶液(B),梯度洗脱;流速为1.0 m L·min-1;检测波长为278 nm。结果:TLC斑点清晰、分离度好,阴性无干扰;黄芩苷、汉黄芩苷、黄芩素、汉黄芩素分别在0.118 0~2.360 0μg(r=0.999 9)、0.046 6~0.932 0μg(r=0.999 8)、0.048 7~0.974 0μg(r=0.999 9)、0.039 7~0.794 0μg(r=0.999 9)与峰面积呈良好的线性关系;平均回收率分别为98.58%(RSD为1.14%,n=6)、98.48%(RSD为0.83%,n=6)、98.99%(RSD为0.77%,n=6)、99.28%(RSD为0.78%,n=6)。结论:本方法简便、准确,能有效控制降压片的质量。     

辽宁省5种老鹳草中5种活性成分的含量测定

目的:建立HPLC同时测定老鹳草属5种老鹳草中原儿茶酸、没食子酸、柯里拉京、鞣花酸和金丝桃苷含量的方法。方法:采用Agilent TC-C18色谱柱(4.6 mm×250 mm,5μm),流动相0.1%磷酸-乙腈梯度洗脱,流速1.0 m L·min-1,检测波长280 nm,柱温30℃。结果:原儿茶酸、没食子酸、柯里拉京、鞣花酸和金丝桃苷5种成分的线性范围分别为0.500~5.000μg(r=0.999 5),0.075~0.750μg(r=0.999 7),1.790~17.900μg(r=0.999 9),0.580~5.800μg(r=0.999 6),0.065~0.650μg(r=0.999 6),平均回收率在94.05%~102.58%,RSD在1.6%~2.9%。结论:该方法简单、准确,具有良好的重复性和稳定性,可为老鹳草药材的质量评价提供一定的参考依据。     

列当属、肉苁蓉属和草苁蓉属植物传统药物学调查

通过野外资源调查、整理各大标本馆标本原始记录和查阅文献记载等方法,系统整理、总结、归纳了列当属、肉苁蓉属和草苁蓉属民族药用植物种类、功效及民间使用情况,结果表明列当属6种药用植物在4个少数民族间作为7种民族药应用,草苁蓉属2种药用植物在8个少数民族间作为10种民族药应用,肉苁蓉属2种药用植物在3个少数民族间作为3种民族药应用,且同种药用植物常作不同民族药;发现3属植物的传统疗效主要集中在补肾壮阳、止血和止痛3个方面,并且该传统疗效与现代药理研究结果基本吻合。因此深入研究植物种类丰富的列当属植物资源对缓解肉苁蓉植物资源匮乏局面和扩大药源具有积极意义。     

厚朴与凹叶厚朴群体遗传学研究

目的:对厚朴与凹叶厚朴的群体遗传学进行研究,为中药厚朴的质量控制提供分子生药学方面的依据。方法:对厚朴与凹叶厚朴15个居群应用2个叶绿体基因间序列psbA-trnH和trnL-trnF进行PCR扩增并测序,计算厚朴与凹叶厚朴单倍型频率,用程序HaploNst分析遗传多样性和遗传结构,应用TCS version 1.13软件构建单倍型网状进化树。结果:厚朴与凹叶厚朴均无特有单倍型存在,但单倍型频率存在显著差异,已开始出现遗传分化的趋势,NST略大于GST。结论:厚朴与凹叶厚朴在遗传上已出现遗传分化的趋势,但尚未完全分化成彼此独立的单系。     

追风伞中黄酮类成分的研究

目的:对追风伞中的黄酮类成分进行分离、鉴定。方法:追风伞干燥全草用95%乙醇溶液加热回流提取,减压回收乙醇,浓缩液依次用石油醚、氯仿萃取后,水层部分利用大孔吸附树脂、硅胶柱色谱、反相Rp-18柱色谱及重结晶等方法进行分离及纯化,并通过1H-NMR,13C-NMR,EI-MS及理化常数对分离化合物进行结构鉴定。结果:从追风伞提取物中分离鉴定9个黄酮类化合物,分别为:木犀草素(1),木犀草素-4′-O-β-D-葡萄糖苷(2),刺槐素-7-O-β-D-葡萄糖苷(3),芦丁(4),刺槐素(5),槲皮素(6),槲皮素-3-O-β-D-葡萄糖苷(7),山柰酚-3-O-β-D-葡萄糖苷(8),异鼠李素-3-O-β-D-葡萄糖苷(9)。结论:所得化合物均为首次从追风伞中分离鉴定。     

金银花类药用植物IspE和IspH基因克隆和生物信息学分析

目的:克隆金银花类药用植物4-二磷酸胞苷-2-C-甲基赤藓糖激酶(4-diphosphocytidyl-2-C-methyl-D-erythritol kinase,IspE)和4-羟基-3-甲基-2-邻苯基二磷酸还原酶(4-hydroxy-3-methylbut-2-enyl diphosphate reductase,IspH)基因,并对其基因序列、蛋白特性和转录活性进行分析、比较.方法:从忍冬Lonicera japonica转录组测序结果中分析获得了IspE,IspH基因.分别以忍冬、红白忍冬L.japonica var.chinensis、红腺忍冬L.hypoglauca和水忍冬L.dasystyla新鲜花蕾为材料,利用RT-PCR技术克隆获得了4种金银花类药用植物IspE和IspH基因的全长cDNA.运用生物信息学分析软件,预测编码蛋白的结构和功能,并通过RT-PCR检测IspE和IspH在忍冬、红白忍冬、红腺忍冬、水忍冬花蕾中的转录情况.结果:金银花类药用植物IspE基因含有1个完整的开放阅读框,长度为1 221 bp,编码406个氨基酸;IspH含有一个完整的开放阅读框,长度为1 380 bp,编码459个氨基酸.IspE和IspH均为非分泌蛋白,均定位于叶绿体中.RT-PCR分析结果表明在忍冬、红腺忍冬和水忍冬的花蕾中IspE,IspH基因的转录水平没有显著差异,但红白忍冬花蕾中IspE,IspH基因的转录水平均显著高于忍冬.结论:克隆获得忍冬、红白忍冬、红腺忍冬和水忍冬中IspE,IspH基因,并证实了其在不同金银花类药用植物中的表达,为进一步研究IspE,IspH基因对萜类化合物生物合成和花香气以及颜色的影响奠定了基础.     

红药根的化学成分研究

采用硅胶、Sephadex LH-20、高效制备液相等方法,对红药根的甲醇提取物进行分离纯化,通过质谱（MS）、波谱数据分析（¹H,¹³C-NMR）进行结构鉴定。从红药根的甲醇提取物中分离7个化合物,分别鉴定为plantainoside A（1）,plantainoside B（2）,calcedarioside C（3）,calcedarioside D（4）,platyphylloside（5）,hirsutanonol（6）和hirsutanonol-5-O-β-D-glucopyranoside（7）。化合物均5~7为首次从该科物中分离得到。     

牡荆子的化学成分

目的:研究牡荆子的化学成分。方法:采用反复硅胶柱色谱、ODS、制备高效液相色谱法及重结晶等方法对牡荆子提取物进行分离纯化,根据波谱数据结合理化性质解析所得化合物的结构。结果:从牡荆子醋酸乙酯萃取部分分离得到8个化合物,分别鉴定为紫花牡荆素(casticin,1),去四氢铁杉脂素(detetrahydroconidendrin,2),6-羟基-4β-(4-羟基-3-甲氧基苯基)-3α-羟甲基-7-甲氧基-3,4-二氢-2-萘醛(6-hydroxy-4β-(4-hydroxy-3-methoxyphenyl)-3α-hydroxymethyl-7-methoxy-3,4-dihydro-2-naphthaldehyde,3),对羟基苯甲酸乙酯(ethyl p-hydroxybenzoate,4),5,4’-二羟基-3,6,7,8,3’-五甲氧基黄酮(5,4’-dihydroxy-3,6,7,8,3’-pentamethoxyflavone,5),5-羟基-6,7,3’,4’-四甲氧基黄酮(5-hydroxy-6,7,3’,4’-tetramethoxyflavone,6),5,4’-二羟基-6,7,8,3’-四甲氧基黄酮(5,4’-dihydroxy-6,7,8,3’-tetramethoxyflavone,7),异落叶松脂素(isolariciresinol,8)。结论:化合物4,5,7为首次从该属植物中分得,化合物2为首次从该植物中分得。     

丛枝菌根真菌与哈茨木霉菌合用对连作丹参生长及质量的影响

该文探讨田间条件下丛枝菌根真菌(AMF)与哈茨木霉菌合用对丹参生长及质量的影响。采用田间小区试验来进行研究,使用HPLC测定丹参地上部分和地下部分有效成分含量,通过形态观察并计算根部发病率,并结合方差统计学方法对各指标的测定结果进行分析。结果显示,单独接种AMF以及AMF与哈茨木霉菌合用能够有效的降低连作丹参根部病害的发生率,其中AMF与哈茨木霉菌合用效果更佳,比CK组降低了61.50%。几种处理对丹参生物量影响没有显著差异,但都能提高丹参根部各种有效成分的含量。单独接种AMF以及AMF+哈茨木霉都能显著提高丹参根中丹酚酸B的含量(P<0.05),其中AMF对丹酚酸B促进作用最明显,提高了27.97%;接种AMF能显著提高丹参根丹参酮I和丹参酮ⅡA的含量(P<0.05),其中丹参酮I约提高了70.14%;丹参酮ⅡA约提高了51.42%。另外,单独接种AMF以及AMF+哈茨木霉均能显著提高丹参根中隐丹参酮的含量,提高了约30.67%。从而得出单独接种AMF以及AMF+哈茨木霉能够有效减低连作丹参病害的发生率,同时提高连作丹参药材的质量。     

髯丝蛛毛苣苔和吊石苣苔抗菌活性成分研究

目的 研究髯丝蛛毛苣苔和吊石苣苔的抗菌活性成分.方法 以小檗碱为阳性对照,利用纸片扩散法进行抗菌活性研究,液体培养法进行活性成分筛选;采用各种色谱法对高活性部位分离,运用多种波谱技术鉴定结构.结果 从髯丝蛛毛苣苔醋酸乙酯部位分离得到5个化合物β-谷甾醇(1),E-3,4-二甲氧基肉桂酸(2),barbinervic acid (3),3β,19α-二羟基-12-烯-28-乌苏酸(4),28-O-β-D-glucopyranosyl pomolic acid(5).从吊石苣苔醋酸乙酯部位分离得到3个化合物 5,7-二羟基-6,8,4'-三甲氧基黄酮(6),5,6,4'-三羟基-7,8-二甲氧基黄酮(7),5-羟基-6,8,4'-三甲氧基黄酮-7-O-β-D-葡萄糖苷(8).化合物3,4,6对金黄色葡萄球菌(SA)、耐甲氧西林葡萄球菌(MRSA)和β-内酰胺酶阳性的金黄色葡萄球菌(ESBLs-SA)具有抑制活性.其中化合物3(IC50 0.098 g·L-1)抑制SA活性最好;化合物4(IC50 0.130 g·L-1)抑制MRSA活性最好;化合物3(IC50 0.270mg·L-1)抑制ESBLs-SA活性最好.结论 化合物1～5为首次从植物中分离得到,7,8为首次从该科植物中分离得到.     

Substantiation of the ethnopharmacological use of Conyza sumatrensis (Retz.) E.H.Walker in the treatment of malaria through in-vivo evaluation in Plasmodium berghei infected mice

Ethnopharmacological relevance

Scientific validation of ethnopharmacologically used plants and their utilization for therapeutic interventions can be a source of affordable treatment especially for neglected diseases in endemic areas. Conyza sumatrensis is a plant which finds its use in treating malaria like fevers but lacks proper scientific validation. Our study has tried to address this gap by authenticating its traditional use for the treatment of malaria.

Aim of the study

Evaluate the antimalarial activity of extracts derived from Conyza sumatrensis for its ethnopharmacological validation.

Materials and methods

Shade dried leaves were extracted with varying concentrations of ethanol and concentrated for bio-evaluation. Swiss albino mice infected with 1×10⁶ parasitized red blood cells, were orally administered with test extracts for 7 days in two sets of experiments. The first set was used to evaluate alcoholic, hydroalcoholic and aqueous extracts while the second set was used to evaluate the dose response of alcoholic extract ranging from 500–1600 mg/kg. Mean survival time, parasitaemia and haemoglobin levels were considered to interpret the antimalarial potential. Phytochemical analysis for the presence of flavonoids, alkaloids tannins, total phenolics, riboflavin and thiamine was also carried out.

Results

Among the three extracts administered at 1000 mg/kg, chemo suppression was significantly (p<0.001) observed in the alcoholic extract (62.59±12.52%) followed by hydroalcoholic (41.81±19.04%, p<0.01) and aqueous (32.04±19.04%, P<0.05) indicating that the active constituents leach out in ethanol. The dose response study involving the ethanol extract concluded the optimum dose to be 1000 mg/kg, as also evidenced by the haemoglobin levels.

Conclusion

The plant exhibits moderate antimalarial activity which can be further prospected for active fractions or pure molecules for adjunctive therapy.     

Antimalarial and safety evaluation of Pluchea lanceolata (DC.) Oliv. & Hiern: In-vitro and in-vivo study

Ethnopharmacological relevance

Many of the effective therapeutic strategies have been derived from ethnopharmacologically used natural products. Pluchea lanceolata is an herb employed in Indian folk medicine for malaria like fever but it lacks proper pharmacological intervention.

Aim of the study

To evaluate antimalarial and safety profile of Pluchea lanceolata: an in-vitro, in-vivo for its ethnopharmacological validation.

Materials and methods

Methanol, butanol, ethyl acetate, chloroform, hexane extracts and its isolate, taraxasterol acetate (TxAc) were obtained from air dried aerial part of Pluchea lanceolata. These were tested in-vitro against chloroquine-sensitive strain of Plasmodium falciparum NF54 by measuring the parasite specific lactate dehydrogenase activity. The most potent hexane extract and TxAc were further validated for in-vivo antimalarial and safety evaluation. TxAc, a pentacyclic-triterpene isolated from the most active fraction was further evaluated with special emphasis on inflammatory mediators involved in malaria pathogenesis. Murine malaria was induced by intra-peritoneal injection of Plasmodium berghei infected red blood cells to the male Swiss inbred mice. Mice were orally treated following Peters 4-Day suppression test. In-vivo antimalarial efficacy was examined by evaluating the parasitaemia, percent survival, mean survival time, blood glucose, haemoglobin and pro-inflammatory mediators involved in malaria pathogenesis.

Results

Hexane extract and TxAc showed promising antimalarial activity in-vitro and in-vivo condition. TxAc attributed in inhibition of the pro-inflammatory cytokines as well as afford to significant increase in the blood glucose and haemoglobin level when compared with vehicle treated infected mice. We have not observed the synergistic action of combinations of chloroquine and TxAc from our experimental results. In-vitro and in-vivo safety evaluation study revealed that hexane extract is non toxic at higher concentration.

Conclusion

Present study further validates the ancient Indian traditional knowledge and use of Pluchea lanceolata as an antimalarial agent. Study confirms the suitability of Pluchea lanceolata as a candidate for further studies to obtain a prototype for antimalarial medicine.