CN1771918A - 格拉司琼巴布剂及其制法 - Google Patents
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Abstract
本发明涉及医药技术领域,是5-HT3受体拮抗剂格拉司琼(Granisetron)的一种新剂型——巴布剂。格拉司琼为临床上预防和治疗因细胞毒治疗(抗肿瘤化疗和放疗)引起的恶心及呕吐等症状的药物,现有的剂型为口服剂型(如片剂、胶囊剂)和注射剂型。但是格拉司琼已有剂型存在不足,注射剂使用不便,需有专业人员帮助使用;口服给药有较强的首过代谢,且病人往往因为胃肠道反应造成服药困难。本发明以盐酸格拉司琼或其游离碱为主药,加不同的辅料制成巴布剂,通过透皮途径给药,不仅可以避免口服给药的首过效应,降低全身的血药浓度,减少毒副反应,维持恒定有效血药浓度,而且具有减少给药次数,使用方便,提高病人用药的顺应性及生活质量等优点,为格拉司琼的临床应用提供了一种新的剂型。
Description
技术领域:
本发明涉及医药技术领域,是5-HT3受体拮抗剂格拉司琼(Granisetron)的一种新剂型——巴布剂。
背景技术:
格拉司琼是强效、高选择性外周和中枢神经系统5-HT3受体拮抗剂,用于预防和治疗因细胞毒治疗(抗肿瘤化疗和放疗)引起的恶心及呕吐等症状,与其他传统型止吐药物相比,具有高效、低毒、安全可靠等优点,已广泛应用于临床。目前,该药的药物剂型有片剂、胶囊剂、注射剂,但是已有剂型存在不足,注射剂使用不便,需有专业人员帮助使用;口服给药有较强的首过代谢,且病人往往因为胃肠道反应造成服药困难;不能有效维持稳定的血药水平。
发明内容:
本发明提供一种格拉司琼的透皮给药制剂——巴布剂。
透皮给药制剂能够避免口服给药肝脏的首过效应,降低全身的血药浓度,减少毒副反应,维持恒定有效血药浓度;而且具有减少给药次数,使用方便,提高病人的顺应性等优点。因此,将格拉司琼设计成透皮给药制剂,通过缓慢持续低剂量给药,不仅能够保持其良好的治疗效果,而且克服以往剂型的不足,提高药物使用便利性和病患依从性。
格拉司琼巴布剂包括背衬层、药物储库层和防粘层三层。药物储库层由盐酸格拉司琼或其游离碱和基质组成。其基质由骨架材料、交联剂和保湿剂剂组成,亦可含有促透剂、消泡剂和交联调节剂。骨架材料选自明胶、羧甲基纤维素钠、聚乙烯吡咯烷酮、D-山梨醇、部分中和聚丙烯酸(NP-700、NP-600)、高岭土或氧化锌,可同时选用其中的1-6种化合物;交联剂选自Ca(OH)2、Al(OH)3、CaCl2、AlCl3中的一种;保湿剂为丙二醇和甘油;促透剂选自二甲基亚砜、氮酮、油酸、N-甲基吡咯烷酮类、十二烷基硫酸钠、水杨酸、薄荷脑、樟脑、柠檬烯、肉豆蔻异丙脂、水溶性氮酮,可同时选用其中的1-6种化合物,优选氮酮;消泡剂选自乙醇、异丙醇、正丁醇、戊醇、正辛醇、油酸、聚乙二醇、磷酸三丁酯、聚丙二醇中的一种;交联调节剂为柠檬酸。优选组分及配比为:盐酸格拉司琼0.2-1份,明胶1-2份,羧甲基纤维素钠2-4份,聚乙烯吡咯烷酮4-6份,D-山梨醇32-40份,部分中和聚丙烯酸(NP-700)1-2份,高岭土或氧化锌1-2份,Ca(OH)2、Al(OH)3、CaCl2或AlCl30.12-0.36份、甘油2-10份、丙二醇8-18份、蒸馏水60份;促透剂的用量为药物储库层的0.5-10%;消泡剂的用量为药物储库层的0-2%;交联调节剂的用量为药物储库层的0-1%。
本发明巴布剂的制备方法为:
1、制备(I)相溶液:按上述配比将明胶加水充分溶胀,将盐酸格拉司琼或其游离碱与D-山梨醇混合均匀后加入明胶中,充分搅拌,得(I)相溶液;
2、制备(II)相溶液:将羧甲基纤维素钠、聚乙烯吡咯烷酮、部分中和聚丙烯酸(NP-700)、保湿剂、促透剂、高岭土或氧化锌以及交联调节剂混合均匀,得(II)相溶液;
3、将(I)、(II)相溶液混合,加入规定量的交联剂,搅拌均匀,铺于无纺布上,50℃烘适当时间,覆盖上防粘膜,切割成规定大小的巴布剂,密封包装。
本发明将格拉司琼制成巴布剂,通过透皮途径给药,不仅可以避免口服给药的胃肠道刺激和肝脏的首过效应,降低全身的血药浓度,减少毒副反应,维持恒定有效的血药浓度,而且可以通过给药面积的调整控制给药剂量,也可随时中断给药,使用方便,减少给药次数,提高了病人用药的顺应性,为格拉司琼的临床应用提供了一种新的剂型。
具体实施方式:
实施例1制备-格拉司琼巴布剂
组分及配比:
明胶羧甲基纤维素钠聚乙烯吡咯烷酮D-山梨醇 | 2g4g6g38g | NP-700Ca(OH)2丙二醇高岭土 | 2g0.3g20g2g |
蒸馏水甘油聚乙二醇-200 | 60g8g1g | 氮酮盐酸格拉司琼 | 8g0.6g |
制备方法为:
1、制备(I)相溶液:按上述配比将明胶加水充分溶胀,60℃水浴下溶解,将D-山梨醇、盐酸格拉司琼混合均匀后加入明胶中,充分搅拌,得(I)相溶液。
2、制备(II)相溶液:将氮酮溶于丙二醇中,与羧甲基纤维素钠、聚乙烯吡咯烷酮、部分中和聚丙烯酸(NP-700)、高岭土、混合均匀,得(II)相溶液。
3、将(I)、(II)相溶液混合,加入甘油,聚乙二醇-200(PEG-200)、Ca(OH)2,充分搅拌,铺于无纺布上,50℃烘90分钟,覆盖上防粘膜,切割成4×5cm2的巴布剂,密封包装,即得成品巴布剂,每贴含药量10mg。
实施例2制备格拉司琼巴布剂
组分及配比:
明胶羧甲基纤维素钠聚乙烯吡咯烷酮D-山梨醇蒸馏水甘油异丙醇 | 2g4g4g32g60g10g1g | NP-700Al(OH)3丙二醇氧化锌樟脑柠檬酸(20%)盐酸格拉司琼 | 0.2g0.18g20g4g6g0.4ml0.6g |
制备方法为:
1、制备(I)相溶液(同实施例1)。
2、制备(II)相溶液:将樟脑溶于丙二醇中,与羧甲基纤维素钠、聚乙烯吡咯烷酮、部分中和聚丙烯酸(NP-700)、氧化锌、柠檬酸混合均匀,得(II)相溶液。
3、将(I)、(II)相溶液混合,加入甘油,异丙醇、Al(OH)3,充分搅拌,铺于无纺布上,50℃烘60分钟,覆盖上防粘膜,切割成4×5cm2的巴布剂,即得成品巴布剂,密封保存,每贴含药量10mg。
实施例3制备格拉司琼巴布剂
配方及配比:
明胶羧甲基纤维素钠聚乙烯吡咯烷酮D-山梨醇蒸馏水甘油油酸 | 2g3g6g36g60g10g0.5g | NP-700AlCl3丙二醇高岭土氮酮柠檬酸(20%)格拉司琼游离碱 | 0.6g0.2g20g6g8g0.4ml0.6g |
制备方法为:
1、制备(I)相溶液:(同实施例1)。
2、制备(II)相溶液:将氮酮、丙二醇与羧甲基纤维素钠、聚乙烯吡咯烷酮、NP-700、高岭土、柠檬酸混合均匀,得(II)相溶液。
3、将(I)、(II)相溶液混合,加入甘油,油酸、AlCl3,充分搅拌,铺于无纺布上,50℃烘30分钟,覆盖上防粘膜,切割成4×5cm2的巴布剂,即得成品巴布剂,密封保存,每贴含药量10mg。
采用改良Franz扩散池,将实施例1制成的格拉司琼巴布剂,进行体外透皮吸收试验,离体透皮吸收试验结果符合零级动力学过程,渗透速率为13.909μg·cm-2·h-1,24h累积透皮量为55.08%,见表1。对在化疗、放疗中均伴有严重的恶心、呕吐症状的癌症患者进行初步临床观察,巴布剂可贴于患者臂、腿、胸或腹等部位,两日一贴,结果表明85%以上的患者恶心感明显减轻,呕吐症状得到控制或消除。未见红肿瘙痒等过敏性表现。
表1格拉司琼巴布剂透过大鼠腹部皮肤的渗透情况
时间(h) | 单位面积累计透过量(μg.cm-2) | 累积透过率% |
12468121624 | 1.27±0.344.44±1.1516.24±11.7734.91±13.02656.78±17.73105.56±27.66177.39±63.41320.55±112.77 | 0.220.762.796.009.7618.1430.4855.08 |
Claims (9)
1、一种格拉司琼巴布剂,包括背衬层、药物储库层和防粘层,其特征在于药物储库层由药物盐酸格拉司琼或其游离碱和基质组成,基质由骨架材料、交联剂、保湿剂组成,骨架材料选自明胶、羧甲基纤维素钠、聚乙烯吡咯烷酮、D-山梨醇、部分中和聚丙烯酸NP-700或NP-600、高岭土或氧化锌,可同时选用其中的1-6种化合物;交联剂选自Ca(OH)2、Al(OH)3、CaCl2、AlCl3中的一种,保湿剂为丙二醇和甘油;各组分的配比为:药物0.2-1份,骨架材料40-60份,交联剂0.1-0.4份,保湿剂10-20份,蒸馏水60份。
2、按权利要求1所述的格拉司琼巴布剂,其特征在于药物储库层的组分和配比为:明胶1-2份、羧甲基纤维素钠2-4份、聚乙烯吡咯烷酮4-6份、D-山梨醇19-40份、部分中和聚丙烯酸NP-700或NP-6001-2份、高岭土或氧化锌1-2份、Ca(OH)2、Al(OH)3、CaCl2或AlCl30.12-0.36份、甘油2-10份、丙二醇8-18份、蒸馏水60份、盐酸格拉司琼或其游离碱0.2-1份。
3、如权利要求1或2所述的格拉司琼巴布剂,其特征在于基质中还含有促透剂,促透剂选自二甲基亚砜、氮酮、油酸、N-甲基吡咯烷酮类、十二烷基硫酸钠、水杨酸、薄荷脑、樟脑、柠檬烯、肉豆蔻异丙脂、水溶性氮酮,可同时选用其中的1-6种,用量为药物储库层的0.5-10%。
4、如权利要求1或2所述的格拉司琼巴布剂,其特征在于基质中还含有消泡剂,消泡剂选自乙醇、异丙醇、正丁醇、戊醇、正辛醇、油酸、聚乙二醇、磷酸三丁酯、聚丙二醇,用量为药物储库层的0-2%。
5、如权利要求3所述的格拉司琼巴布剂,其特征在于基质中还含有消泡剂,消泡剂选自乙醇、异丙醇、正丁醇、戊醇、正辛醇、油酸、聚乙二醇、磷酸三丁酯、聚丙二醇中的一种,用量为药物储库层的0-2%。
6、如权利要求1、2或5所述的格拉司琼巴布剂,其特征在于基质中还含有交联调节剂柠檬酸,用量为药物储库层的0-1%。
7、如权利要求3所述的格拉司琼巴布剂,其特征在于基质中还含有交联调节剂柠檬酸,用量为药物储库层的0-1%。
8、如权利要求4所述的格拉司琼巴布剂,其特征在于基质中还含有交联调节剂柠檬酸,用量为药物储库层的0-1%。
9、如权利要求6所述的格拉司琼巴布剂,其特征在于组分和配比如下:
明胶2g NP-700 2g
羧甲基纤维素钠4g Ca(OH)2 0.3g
聚乙烯吡咯烷酮6g 丙二醇 20g
D-山梨醇 38g 高岭土 2g
蒸馏水 60g 氮酮 8g
甘油 8g 盐酸格拉司琼 0.6g
聚乙二醇-200 1g。
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CN103222977A (zh) * | 2013-05-22 | 2013-07-31 | 南京工业大学 | 一种格拉司琼和地塞米松复方经皮控释贴剂及其制备方法 |
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CN1197575C (zh) * | 2003-06-06 | 2005-04-20 | 中国人民解放军第二军医大学 | 盐酸西替利嗪巴布剂 |
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CN102178660B (zh) * | 2011-04-19 | 2012-08-08 | 上海现代药物制剂工程研究中心有限公司 | 微孔型盐酸格拉司琼透皮贴膜及其制法 |
EP2921164A4 (en) * | 2012-11-13 | 2016-06-15 | Genic Co Ltd | STICKY COSMETIC HYDROGELIC COMPOSITION |
CN103222977A (zh) * | 2013-05-22 | 2013-07-31 | 南京工业大学 | 一种格拉司琼和地塞米松复方经皮控释贴剂及其制备方法 |
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