CN1238950A - 青蒿素类药物与咯萘啶的复方制剂抗疟药物 - Google Patents

青蒿素类药物与咯萘啶的复方制剂抗疟药物 Download PDF

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CN1238950A
CN1238950A CN 98115332 CN98115332A CN1238950A CN 1238950 A CN1238950 A CN 1238950A CN 98115332 CN98115332 CN 98115332 CN 98115332 A CN98115332 A CN 98115332A CN 1238950 A CN1238950 A CN 1238950A
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malaridine
artemisinin
artemisine
artemether
medicines
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CN1109546C (zh
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肖树华
施晓华
李南高
王存志
张楚成
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KPC Pharmaceuticals Inc
National Institute of Parasitic Diseases of Chinese Center for Disease Control and Prevention
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INST OF PARASITIC DISEASES CHI
Kunming Pharmaceutical Corp
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Abstract

本发明属于一种由青蒿素类药物与咯萘啶为主复方而成的抗疟药物。青蒿素类药物半衰期短复燃率高。本发明产品本质上含有(重量比)青蒿素类药物35~80份,咯萘啶2—10份,同时还含有常规的药用辅料。所说的青蒿素类药物包括:青蒿素、双氢青蒿素、蒿甲醚、蒿乙醚、青蒿琥酯、蒿醚林酸等。上述构成所得的抗疟制剂,毒性小、稳定性好,疗效提高,两药按上述比例组合有明显的增效作用和降低复燃率作用。

Description

青蒿素类药物与咯萘啶的复方制剂抗疟药物
本发明属于一种由青蒿素类药物与咯萘啶为主复方而成的抗疟药物。
青蒿素类药物是中国发明的从中药青蒿、黄花蒿、云南大头黄花蒿中提取的青蒿素及其半合成衍生物,以蒿甲醚为代表,为一类高效新型抗疟剂。迄今尚未出现与现有抗疟药的交叉耐药性。本类药物已在全球疟区应用于恶性疟的治疗,取得了明显的经济效益和社会效益。本类药半衰期短,复燃率稍高,亦有可能诱发产生耐药性。有报道青蒿素的复燃率很高,实际上基本不在临床上应用。其他青蒿素衍生物也存在类似问题。
本发明的目的是克服青蒿素类药物的上述缺点,提供一种高疗效,低复燃率的抗疟药物。
本发明根据世界抗疟药研究与发展趋势,以及青蒿素类药物的作用特点,通过长期的反复试验、对比、分析和筛选,将其与长效的抗疟药物咯萘啶经科学组方而得复方制剂。咯萘啶亦为我国发明的一类高效、低毒的新型抗疟药,其半衰期长,两药复合组方后,可互补增效以提高疗效,降低复燃率,延缓抗药性的产生。
本发明产品本质上含有(重量比)青蒿素类药物35~80份,咯萘啶2-10份,同时还含有常规的药用辅料。本发明产品最好按每剂量含有35-80mg青蒿素类药物及2-10mg咯萘啶制成口服制剂。
所说的青蒿素类药物包括:青蒿素、双氢青蒿素、蒿甲醚、蒿乙醚、青蒿琥酯、蒿醚林酸等。
上述构成所得的抗疟制剂,毒性小、稳定性好,疗效提高,两药按上述比例组合有明显的增效作用和降低复燃率作用。这可由以下实验结果证实:一、蒿甲醚和咯萘啶单用对鼠疟红内期抑制作用的观察
方法:采用四天抑制法,即小鼠do接种p.berghei ANKA株感染rbc,每鼠500万,4小时后ig首剂药物,连续给药4天,查血,求原虫血症转阴率。药物均用1%西黄蓍胶配制,结果如下:
                        蒿甲醚对鼠疟的抑制作用
    剂量(mg/kg×4)           动物数    转阴鼠数
          3.89             10        0
          4.86             10        1
          6.08             10        3
          7.6             10        6
          9.5             10        7
          ED50        7.38(6.16-8.85)
          ED95        14.81(10.48-19.95)
                         咯萘啶对鼠疟的抑制作用
    剂量(mg/kg×4)     动物数     转阴鼠数
    0.63     10     0
    0.84     10     2
    1.13     10     8
    1.5     10     10
    ED50     0.97(0.88-1.08)
    ED95     1.27(1.07-1.52)
二、蒿甲醚和咯萘啶合用对鼠疟红内期抑制作用
实验方法同上。分别求蒿甲醚和咯萘啶配伍应用时各药的ED95,并作等效图,得知合并用药的作用方式为相加。三、蒿甲醚和咯萘啶合并应用对感染伯氏疟原虫小鼠的实验治疗
方法:昆明鼠do腹腔接种p.berghei ANKA株感染rbc,每鼠500万,d3待原虫血症达5-10%后连续给药3天,查血,求原虫血症转阴率。药物均用1%西黄蓍胶配制,咯萘啶和蒿甲醚按1比15配成混合物。结果如下:
 药物       剂量(mg/kg×3)     动物数     转阴鼠数
蒿甲醚      36.9                  10           246.1                  10           557.6                  10           572.0                  10           590.0                  10           6ED95 376.8(187.5-786.6)
咯萘啶      1.2                   10           01.5                   10           21.9                   10           52.3                   10           52.9                   10           7ED95 4.3(2.7-6.8)
蒿甲醚与咯萘啶    10.8                   9         0(15∶1)     14.4                   10        119.2                   10        625.6                   9         7ED95 30.1(22.5-40.3)
混合物的合并作用方式由公式法计算,公式如下:1/混合物的预期ED95=a/A化合物的ED95+b/BA化合物的ED95
(a,b分别为A、B化合物在混合物中所占的比例,a+b=1)
将实验结果代入上述公式计算得预期ED95=58.7。
根据keplinger,ML等,预期ED95与实测ED95的比值小于0.75为拮抗作用,0.75-1.75为相加作用,大于1.75为增效作用。
本实验实测ED95为30.1,预期ED95/实测ED95=1.95(>1.75),因此合并用药作用方式判为增效作用。四、蒿甲醚和咯萘啶合用对感染伯氏疟原虫小鼠远期复燃的影响
蒿甲醚和咯萘啶合并应用与单独应用相比,无论对感染药物敏感的疟原虫ANKA株小鼠或氯喹抗性的伯氏疟原虫RL NAKA株小鼠原血虫症转阴快,远期复燃较迟,复燃率低。
和现有技术相比,本发明产品的优点是药效高,复燃率低。
实施例1:
将蒿甲醚50g、咯萘啶3g、羧甲基淀粉钠15.6g、微晶纤维素15g、药用淀粉180g、吐温-801g、硬脂酸镁4g,通过制粒、压为1000片、包装而成复方蒿甲醚咯萘啶片剂。本品每次服用一片,每日三次,五天一疗程。
实施例2:
将蒿甲醚40g、咯萘啶3.5g、羧甲基淀粉钠12.48g、低取代羟丙基纤维素7克、药用淀粉250g、吐温-800.8g、硬脂酸镁3.2g,通过制粒、干燥、胶囊分装为1000粒、包装而成复方蒿甲醚咯萘啶胶囊剂。本品每次一粒,每日三次,五天一疗程。
以上实施例仅为了对本发明作进一步的说明,而发明的范围不受所举实施例的局限。

Claims (4)

1、一种青蒿素类药物与咯萘啶的复方制剂抗疟药物,其特征是本质上含有(重量比)青蒿素类药物35~80份,咯萘啶2-10份,同时还含有常规的药用辅料。
2、如权利要求1所说的抗疟药物,其特征是按每剂量含有35-80mg青蒿素类药物及2-10mg咯萘啶制成口服制剂。
3、如权利要求1所说的抗疟药物,其特征是所说的青蒿素类药物为青蒿素、双氢青蒿素、蒿甲醚、蒿乙醚、青蒿琥酯、蒿醚林酸。
4、如权利要求3所说的抗疟药物,其特征所说的青蒿素类药物为蒿甲醚。
CN98115332A 1998-06-17 1998-06-17 青蒿素类药物与咯萘啶的复方制剂抗疟药物 Expired - Lifetime CN1109546C (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010130147A1 (zh) * 2009-05-12 2010-11-18 重庆通天药业有限公司 乳酸咯萘啶及其药物组合物和用途
CN113350334A (zh) * 2021-02-05 2021-09-07 中国中医科学院中药研究所 一种含有双氢青蒿素的抗疟药物

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68906345T2 (de) * 1988-10-07 1993-10-28 Hoechst Ag Antimalariazusammenstellungen, gebrauchmachend von Quinidin, Artemisinin und ihren Derivaten.
CA2105773A1 (en) * 1992-02-07 1993-08-08 Anton Alexander Poltera Antimalarial synergistic compositions containing benflumetol

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010130147A1 (zh) * 2009-05-12 2010-11-18 重庆通天药业有限公司 乳酸咯萘啶及其药物组合物和用途
CN113350334A (zh) * 2021-02-05 2021-09-07 中国中医科学院中药研究所 一种含有双氢青蒿素的抗疟药物

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Address after: 200025 Luwan District Road, Ruijin, No. two, No. 207, Shanghai

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