CN101600435A - 多发性硬化症治疗剂 - Google Patents
多发性硬化症治疗剂 Download PDFInfo
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- CN101600435A CN101600435A CNA2008800032965A CN200880003296A CN101600435A CN 101600435 A CN101600435 A CN 101600435A CN A2008800032965 A CNA2008800032965 A CN A2008800032965A CN 200880003296 A CN200880003296 A CN 200880003296A CN 101600435 A CN101600435 A CN 101600435A
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- multiple sclerosis
- chlorphenyl
- pyridazin
- benzyl
- administration
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Abstract
本发明提供一种对多发性硬化症具有高的有效性、安全性优异、能够口服给药的多发性硬化症的预防和/或治疗剂。该多发性硬化症的预防和/或治疗剂将2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物作为有效成分。
Description
技术领域
本发明涉及一种新型的多发性硬化症的预防和/或治疗剂。
背景技术
多发性硬化症是一种表现为因脑和脊髓的脱髓引起的中枢性功能不全,引起视觉障碍、运动障碍等的疾病,是一种被日本厚生劳动省指定为特殊疾病的原因不明的疑难疾病。在欧美,在困扰年轻成年人的神经疾病中发病率最高,每10万人中有50人左右。在日本的发病率估计每10万人中有8~9人左右,推测大约有1万2000个患者。多发性硬化症发病时,多数情况下,症状是反复缓解和复发(复发缓解型)。多发性硬化症尤其多发于30岁前后,随着年龄增加复发减少,但是一部分患者的病状急剧发展(慢性进行型)。在患者的病变部位可以确认T细胞和巨噬细胞的浸润,这些细胞被认为在中枢神经内破坏髓磷脂蛋白、破坏髓鞘,其结果引起神经障碍(非专利文献1)。脱髓斑在整个中枢神经系统分布广泛,高发部位为视神经、脑干、脊髓、小脑等。病状基于神经障碍引起的部位而不同,表现为四肢麻痹、震颤、疲劳、视神经障碍、排尿·排便障碍等各种症状。发病的详细机制等有很多不明之处,但由于免疫抑制剂显示效果,可以认为不是自身免疫疾病的一种(非专利文献2)。另外,也有报道称,在多发性硬化症的发病中,与伴随病毒、细菌的感染的免疫系统的活化相关(非专利文献3)。
实际上,在多发性硬化症的病变部位,可以发现特征性的T细胞、单核细胞/巨噬细胞的浸润,暗示这些细胞产生的Th1型细胞因子(干扰素γ等)与病状相关联(非专利文献4)。由此,考虑通过抑制这些细胞向病变部位的浸润,能够期待取得对多发性硬化症的治疗效果。
作为目前的治疗方法,在发病期使用类固醇剂,在缓解期使用干扰素β(IFNβ)制剂、格拉默(glatiramer)制剂。IFNβ制剂作用于T细胞并调节干扰素γ的产生量,并且通过使抗原提呈细胞的抗原提呈降低(非专利文献5)而抑制免疫应答的增强,与多发性硬化症的症状的延缓发展以及复发频率的减少相关。但是,即使将这些药剂进行给药,平均每年也有0.8次左右的复发发生,现状是至今仍没有能够确实防止复发的方法(非专利文献6)。另外,这需要频繁地进行皮下给药,存在发热·皮下溃疡等副作用的问题,依从性方面也对患者造成极大的负担,因此,能够通过口服给药的药剂具有极大的意义。另一方面,有报告称对于重症进行性的患者,免疫抑制剂环磷酰胺的脉冲疗法是有效的,但是,白血球减少、脱毛等副作用强,要求谨慎给药。根据这种状况,强烈希望开发一种有效的治疗方法。
另一方面,作为公知物质的2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮,如专利文献1中的记载,具有优异的抑制白介素-1β的产生的作用,适用于风湿、关节炎、骨质疏松症、炎症性肠炎、免疫缺陷综合症、败血症、肝炎、肾炎、虚血性疾病、胰岛素依赖型糖尿病、动脉硬化、帕金森病、阿尔茨海默氏病、白血病等的预防、治疗。但是,至今没有对多发性硬化症的应用进行过报道。
专利文献1:国际公开号WO99/25697号小册子
非专利文献1:Noseworthy等;N Engl J Med.343卷13号938-52页(2000)
非专利文献2:Neuhaus等;Trends Pharmacol Sci.24卷3号131-8页(2003)
非专利文献3:Tejada-Simon等;Ann Neurol.53卷189-97页(2003)
非专利文献4:Bielekova等;Nat Med.6卷1167-75页(2000)
非专利文献5:Joseph等;J Neuroimmunol.20卷1号39-44页(1988)
非专利文献6:The IFNB Multiple Sclerosis Study Group;Neurology43卷4号655-61页(1993)
发明内容
本发明的目的在于提供一种对多发性硬化症具有高的有效性、安全性优异、能够口服给药的多发性硬化症的预防和/或治疗剂。
本发明的发明者们对以上现状进行深入的研究,结果发现通过将2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮进行给药,能够确认优异的对多发性硬化症的症状的抑制作用,从而完成本发明。
即,本发明提供如下的技术方案。
1)一种多发性硬化症的预防和/或治疗剂,其将2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物作为有效成分。
2)一种多发性硬化症的预防和/或治疗用医药组合物,其含有2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物以及药学上可接受的载体。
3)一种多发性硬化症的预防和/或治疗方法,将有效量的2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物进行给药。
4)2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物在制造多发性硬化症的预防和/或治疗药中的使用。
5)2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物用于预防和/或治疗多发性硬化症。
发明效果
本发明的多发性硬化症的预防和/或治疗剂能够口服给药,显示优异的多发性硬化症的抑制作用,对多发性硬化症的预防和/或治疗有效。
附图说明
图1是表示对实验性自身免疫性脑脊髓炎得分的变化的药剂效果的图。
图2是表示对最大发病得分的药剂效果的图。
图3是表示对实验性自身免疫性脑脊髓炎小鼠脊髓中F4/80的mRNA表达量的药剂效果的图。
图4是表示对实验性自身免疫性脑脊髓炎小鼠脊髓中TNF-α的mRNA表达量的药剂效果的图。
图5是表示对实验性自身免疫性脑脊髓炎小鼠脊髓中IL-1β的mRNA表达量的药剂效果的图。
图6是表示对实验性自身免疫性脑脊髓炎小鼠脊髓中IL-6的mRNA表达量的药剂效果的图。
具体实施方式
本发明的多发性硬化症的预防和/或治疗剂中所使用的2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮是公知物质,例如可以利用国际公开第99/25697号公报记载的方法或其类似方法进行制造。
另外,2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮能够在以水合物为代表的溶剂化物的形态下存在,这些溶剂化物也包含于本发明中。
如后述的实施例所示,通过将2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物进行给药,在使用作为多发性硬化症的动物模型而被广泛认可的实验性自我免疫性脑脊髓炎模型小鼠的评价体系中,暗示对脊髓的巨噬细胞浸润的抑制作用,显示优异的多发性硬化症的抑制作用。因此,根据本发明,能够进行多发性硬化症的发病预防、复发预防、发展抑制、治疗,并且能够改善其病况。
本发明的多发性硬化症的预防和/或治疗剂的给药形态,没有特别限定,可以根据治疗目的进行适当选择,例如可以列举片剂、胶囊剂、颗粒剂、薄膜包衣剂、散剂、糖浆剂等口服给药形态或注射剂、栓剂、吸入剂、经皮吸收剂、滴眼剂、滴鼻剂等非口服给药形态。优选作成口服给药制剂。
在适合这些给药形态的医药制剂中,除了药学上可接受的载体,例如淀粉类、乳糖、蔗糖、甘露醇、硅酸等赋形剂以及增量剂;琼脂、碳酸钙、马铃薯或木薯淀粉、藻酸、复合硅酸盐等崩解剂;羟基丙基甲基纤维素、甲基纤维素、羧甲基纤维素钠、藻酸盐、明胶、聚乙烯吡咯烷酮、蔗糖、阿拉伯树胶等结合剂;滑石、硬脂酸钙、硬脂酸镁、固形聚乙二醇类、十二烷基硫酸钠或其混合物等润滑剂;乳糖、玉米淀粉等稀释剂;柠檬酸、磷酸、酒石酸、乳酸等有机酸、盐酸等无机酸、氢氧化钠、氢氧化钾等氢氧化碱、三乙醇胺、二乙醇胺、二异丙醇胺等有机胺类等缓冲剂;对羟基安息香酸酯类、苯扎氯铵等防腐剂;硬脂酸钙、硬脂酸镁、十二烷基硫酸钠等阴离子性表面活性剂,苯扎氯铵、苄索氯铵、西吡氯铵等阳离子性表面活性剂,单硬脂酸甘油酯、蔗糖脂肪酸酯、聚氧乙烯硬化蓖麻油、聚氧乙烯山梨糖醇酐脂肪酸酯、聚氧乙烯脂肪酸酯、聚氧化乙烯烷基醚等非离子性表面活性剂等的乳化剂;亚硫酸钠、亚硫酸氢钠、二丁基羟基甲苯、丁基羟基茴香醚、乙二胺四乙酸等稳定剂以外,必要时还可以适当地组合使用矫味剂、分散剂、保存剂、香料等。
本发明中,2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物的给药量,可以考虑患者的体重、年龄、性别、症状等方面适当选择,通常情况下,成人每天给药2~320mg,优选4~160mg,分1次或数次进行给药。
实施例
以下通过列举实施例,对本发明进行更具体的说明,但是本发明的技术范围不被这些实施例限定。
实施例1
对实验性自身免疫性脑脊髓炎模型小鼠给药2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮(以下表示为药剂A),评价症状。实验性自身免疫性脑脊髓炎模型通过用作为髓鞘的构成蛋白的髓磷脂蛋白免疫小鼠,在中枢神经系统内通过T细胞引发自身免疫性炎症。在该模型中,发生T细胞、单核细胞/巨噬细胞向中枢系统的浸润,可知为显示与多发性硬化症的病状相似的表现的模型。
A材料和方法
动物使用7周龄雌性C57BL/6(日本Charles River(株))。关于使小鼠发生实验性自身免疫性脑脊髓炎的致敏用乳液,将MyelinOligodendrocyte Glycoprotein(MOG)35-55(Alexis Biochemical)和Adjuvant complete freund H37 Ra(DIFCO)以MOG浓度为2mg/mL等量添加,使用Handy Micro Homogenizer((株)Microtec Nition制),在冰浴下均质化调制。将调制成的乳液0.1mL向小鼠的尾根部进行皮内给药,进行初次致敏。同日,对尾部静脉给药溶解于生理盐水的Purtussis toxin 500ng/0.3mL。初次致敏2天后,同样进行静脉给药Purtussis toxin 500ng/0.3mL,进行追加致敏。从初次致敏的第二天到致敏后42天后,将药剂A以30mg/kg在早晨(9:00~11:00)和傍晚(15:30~17:30)两次口服给药。IFNβ(日本Schering)隔天以10000国际单位/个体进行皮下给药。
实验性自身免疫性脑脊髓炎的症状根据以下项目进行得分评价。
0 没有症状
1 尾部乏力或者步行异常
2 尾部乏力并且步行异常
3 1只的四肢麻痹
4 2只以上的四肢麻痹
5 死亡
B 结果
图1表示得分评价的变化,表1表示各个体的发病时间的解析,图2表示各个体的最大得分的解析结果。结果以全部例数10只的平均值±标准误差表示。检定使用非参数Dunnett试验。
实验中,对照组在致敏后16天后发生死亡例,IFNβ给药组在致敏后12天、37天、40天后发生死亡例。另一方面,药剂A给药组没有出现死亡例。通过药剂A的口服给药,表现与IFNβ大约同等的实验性自身免疫性脑脊髓炎得分的改善(图1),另外,出现得分2以上的发病延迟的倾向(表1),并且,各个体的最大实验性自身免疫性脑脊髓炎得分出现降低的倾向(图2)。
[表1]
实验性自身免疫性脑脊髓炎发病开始天数的解析结果
*p<0.05使用Dunnett与对照组相比(Versus Control using Dunnett)
实施例2
A材料和方法
将实验例1中使用的小鼠在第42天取出脊髓,使用ISOGEN(Nippon Gene)精制RNA。作为比较,同样从没有致敏的正常小鼠中取出脊髓以供测定。由获得的RNA使用逆转录酶合成cDNA,根据Applied Biosystems社的实验方案,通过使用TaqMan探针的real-timePCR方法对各种基因(F4/80、TNF-α、IL-1β、IL-6)的mRNA量进行定量(ABI PRISM7900HT系统;Applied Biosystems社)。同时测定核糖体RNA量,用于校正。
B结果
实验性自身免疫性脑脊髓炎模型中,显示各种基因的mRNA量都比正常小鼠高。相对于此,药剂A给药小鼠中,在单核细胞/巨噬细胞系细胞特异性表达的F4/80的mRNA表达量降低,暗示脊髓中单核细胞/巨噬细胞系细胞的浸润受到抑制。另外,也能够确认主要通过这些细胞产生、显示与多发性硬化症的病状紧密相关性的TNF-α、IL-1β、IL-6等细胞因子量的表达受到抑制。另一方面,IFNβ给药小鼠中,IL-1β、IL-6表达受到抑制,但TNFα的表达没有受到抑制。并且,F4/80的mRNA的表达抑制与药剂A相比较弱。
根据以上结果,本发明的药剂A或其溶剂化物,对多发性硬化症的发病预防、复发预防、发展抑制、治疗、病状改善等有效,作为多发性硬化症的预防和/或治疗剂有效。
Claims (6)
1.一种多发性硬化症的预防和/或治疗剂,其特征在于:
将2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物作为有效成分。
2.如权利要求1所述的多发性硬化症的预防和/或治疗剂,其特征在于:其是口服给药制剂。
3.2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物在制造多发性硬化症的预防和/或治疗药中的使用。
4.如权利要求3所述的使用,其特征在于:
所述预防和/或治疗药是口服给药用医药。
5.一种多发性硬化症的预防和/或治疗方法,其特征在于:
将有效量的2-苄基-5-(4-氯苯基)-6-[4-(甲硫基)苯基]-2H-哒嗪-3-酮或其溶剂化物进行给药。
6.如权利要求5所述的方法,其特征在于:
给药方式是口服给药。
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JP (1) | JPWO2008093495A1 (zh) |
KR (1) | KR20090114371A (zh) |
CN (1) | CN101600435A (zh) |
AU (1) | AU2008211480A1 (zh) |
BR (1) | BRPI0805841A2 (zh) |
CA (1) | CA2669563A1 (zh) |
EA (1) | EA200970720A1 (zh) |
MX (1) | MX2009008059A (zh) |
TW (1) | TW200838535A (zh) |
WO (1) | WO2008093495A1 (zh) |
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EP2017266A1 (en) * | 1997-11-19 | 2009-01-21 | Kowa Co., Ltd. | Pyridazine derivatives and medicines containing the same as effective ingredients |
KR100770327B1 (ko) * | 2000-09-18 | 2007-10-25 | 에자이 알앤드디 매니지먼트 가부시키가이샤 | 피리다지논 및 트리아지논 화합물류 및 그들의 의약 용도 |
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2008
- 2008-01-28 CN CNA2008800032965A patent/CN101600435A/zh active Pending
- 2008-01-28 JP JP2008556026A patent/JPWO2008093495A1/ja active Pending
- 2008-01-28 US US12/516,595 patent/US20100075972A1/en not_active Abandoned
- 2008-01-28 MX MX2009008059A patent/MX2009008059A/es unknown
- 2008-01-28 EA EA200970720A patent/EA200970720A1/ru unknown
- 2008-01-28 EP EP08710303A patent/EP2127653A1/en not_active Withdrawn
- 2008-01-28 TW TW097103099A patent/TW200838535A/zh unknown
- 2008-01-28 BR BRPI0805841-5A patent/BRPI0805841A2/pt not_active IP Right Cessation
- 2008-01-28 WO PCT/JP2008/000099 patent/WO2008093495A1/ja active Application Filing
- 2008-01-28 CA CA002669563A patent/CA2669563A1/en not_active Abandoned
- 2008-01-28 AU AU2008211480A patent/AU2008211480A1/en not_active Abandoned
- 2008-01-28 KR KR1020097015733A patent/KR20090114371A/ko not_active Application Discontinuation
Also Published As
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MX2009008059A (es) | 2009-08-12 |
WO2008093495A1 (ja) | 2008-08-07 |
TW200838535A (en) | 2008-10-01 |
JPWO2008093495A1 (ja) | 2010-05-20 |
BRPI0805841A2 (pt) | 2011-08-30 |
AU2008211480A1 (en) | 2008-08-07 |
CA2669563A1 (en) | 2008-08-07 |
KR20090114371A (ko) | 2009-11-03 |
US20100075972A1 (en) | 2010-03-25 |
EP2127653A1 (en) | 2009-12-02 |
EA200970720A1 (ru) | 2009-12-30 |
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