CN110448535A - 一种裂褶菌素胃漂浮片 - Google Patents
一种裂褶菌素胃漂浮片 Download PDFInfo
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- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
- A61K9/0065—Forms with gastric retention, e.g. floating on gastric juice, adhering to gastric mucosa, expanding to prevent passage through the pylorus
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Abstract
本发明公开了一种裂褶菌素胃漂浮片,该裂褶菌素胃漂浮片成分重量百分比为:裂褶菌素1‑15%,乙基纤维素1‑25%,聚乙二醇5‑65%、壳聚糖5‑40%,碳酸氢钠1‑20%。并具体公开了裂褶菌素胃漂浮片的制备方法,该漂浮制剂使药物吸收量增大,提高了药物生物利用度。
Description
技术领域
本发明属于医药制剂领域,具体涉及一种裂褶菌素胃漂浮片。
背景技术
裂褶菌素是由裂褶菌分泌的胞外多糖, 具有β-(1-6)分支的β-(1-3)-D 葡聚糖的独特的活性结构和良好的水溶性, 在调节免疫功能、抗肿瘤、抗辐射等方面有着显著的疗效。Tabata 发现裂褶菌素能明显的抑制肿瘤生长;小松信彦发现裂褶菌素对动物急慢性感染有防御作用, 能防御葡萄球菌、大肠杆菌、绿脓杆菌等多种细菌引起的感染;能显著增加脾脏产生抗羊红细胞抗体的细胞数, 并可增强迟发型皮肤过敏反应, 提高细胞免疫功能。多糖的生物活性与其结构有着密切的关系,王淼在文献中报道因裂褶菌素具有独特的结构,其生物活性高于其他真菌多糖。
漂浮制剂作为缓冲系统有许多潜在优势,吸收部位主要在消化道上段,而生物利用度低的药物通过漂浮制剂可以使吸收量增大。 胃内漂浮制剂原理:该制剂主要是根据流体动力学平衡控释系统原理设计的,由药物与一种或多种亲水凝胶骨架材料及其他辅助材料制成。口服与胃液接触后产生水化作用,制剂表面形成一层凝胶屏障而使制剂体积膨胀,因密度小于胃内容物的密度而漂浮于胃液上,使其不受胃排空的影响。凝胶屏障控制了外围水分的进一步渗入和凝胶内药物的扩散,并长时间保持一定的形状。随着时间的延长,水分逐渐向内渗入,一部分药物通过凝胶层扩散释放,另一部分药物则随凝胶的溶蚀而溶出,达到控制药物释放的目的。制剂漂浮于胃内容物之上的同时,药物以预期的速度从系统中缓慢释放,药物释放完全后,残留的部分从胃部排空,这样药物在胃内滞留时间延长,血药浓度波动减小。
裂褶菌素易被胃内各种酶水解,若将其制成胃内漂浮制剂,可以延长胃内滞留时间,提高生物利用度。
发明内容
本发明旨在提供一种可以延长胃内滞留时间,提高生物利用度的裂褶菌素胃漂浮片。
为实现上述发明目的,本发明一种裂褶菌素胃漂浮片,具体实施方案为:
本发明所述一种裂褶菌素胃漂浮片,该裂褶菌素胃漂浮片成分重量百分比为:裂褶菌素1-15%,乙基纤维素1-25%,聚乙二醇5-65%、壳聚糖5-40%,碳酸氢钠1-20%。
本发明所述一种裂褶菌素胃漂浮片,该裂褶菌素胃漂浮片成分重量百分比为:裂褶菌素1-12%,乙基纤维素1-22%,聚乙二醇25-55%、壳聚糖5-35%,碳酸氢钠1-15%。
本发明所述一种裂褶菌素胃漂浮片,该裂褶菌素胃漂浮片成分重量百分比为:裂褶菌素7-12%,乙基纤维素14-20%,聚乙二醇38-42%、壳聚糖22-24%,碳酸氢钠5-12%。
本发明所述一种裂褶菌素胃漂浮片,胃漂浮片的制备方法为:
1)将裂褶菌素,乙基纤维素,聚乙二醇、壳聚糖、碳酸氢钠,分别过80目筛;
2)将处方量的聚乙二醇分成2份备用;
3)将处方量3/4的聚乙二醇熔融,加入(1)混合均匀的各原辅料,300-500rpm搅拌,冷却后过40目筛;
4)将步骤3)用55-80%乙醇制软材,过14-30目筛制粒;
5)干燥,整粒,加入剩余的聚乙二醇混匀后压片。
本发明所述一种裂褶菌素胃漂浮片,步骤2)所述聚乙二醇分成2份质量比3:1。
本发明所述一种裂褶菌素胃漂浮片,步骤3)所述熔融温度为50-80 ℃。
本发明所述一种裂褶菌素胃漂浮片,步骤5)干燥温度为40-45℃。
本发明所述一种裂褶菌素胃漂浮片,该方法制备的胃漂浮片硬度为2-3kg/cm2。
本发明相较于普通裂褶菌素片的优点在于:
①降低了药品毒副反应,减少了用药次数及用药量,患者用药顺应性好;
②延长药物的作用时间,维持血药浓度平稳,药品疗效显著;
③漂浮制剂使药物吸收量增大,提高了药物生物利用度;
④本发明制备工艺简单,适合企业规模化生产,极具市场开发前景。
具体实施方式
下面实施例只为进一步说明本发明,不以任何形式限制本发明。
实施例1
处方:(制备1000片)
裂褶菌素 8g 7.6
乙基纤维素 20g 19.2
聚乙二醇 40g 38.5
壳聚糖 25g 24
碳酸氢钠 12g 11.5
实施例2
处方:(制备1000片)
裂褶菌素 8g
乙基纤维素 15g 14.4
聚乙二醇 44g 42
壳聚糖 25g
碳酸氢钠 12g
实施例3
处方:(制备1000片)
裂褶菌素 8g
乙基纤维素 18g
聚乙二醇 40g
壳聚糖 22g
碳酸氢钠 12g
实施例1-3 制备方法:
1)将裂褶菌素,乙基纤维素,聚乙二醇、壳聚糖、碳酸氢钠,分别过80目筛;
2)将处方量的聚乙二醇分成2份(质量比3:1)备用;
3)将处方量3/4的聚乙二醇熔融,熔融温度60℃,加入(1)混合均匀的各原辅料,350rpm搅拌,冷却后过40目筛;
4)将步骤3)用60%乙醇制软材,过30目筛制粒;
5)在40℃条件下干燥,整粒,加入剩余的聚乙二醇混匀后压片。
试验例1
筛选骨架材料,结果见下表:
| 种类 | 起浮时间 | 持浮力 | 颗粒外观 |
| 丙烯酸树脂Ⅳ | - | - | 粘度较大 |
| 羟丙甲纤维素 | 5分钟26秒 | 3.2h | 颗粒大小整齐,颜色均一 |
| 甲基纤维素 | 10分钟15秒 | 2.7h | 颗粒大小整齐,颜色均一 |
| 羧甲纤维素钠 | - | - | 颗粒细粉较多 |
| 乙基纤维素10mPa·s | 1分钟25秒 | 4.0h | 颗粒大小整齐,颜色均一 |
| 乙基纤维素20mPa·s | 3分钟31秒 | 3.6h | 颗粒大小整齐,颜色均一 |
注:-表示25分钟内不能浮起;25分钟内若不能浮起,将不进行后续试验。
由结果看,乙基纤维素(粘度10mPa·s)起浮时间最短、持浮力时间最长,故将其确定为裂褶菌素胃漂浮片骨架材料。
试验例2
筛选起泡剂种类,结果见下表:
| 种类 | 起浮时间 | 持浮力 | 颗粒外观 |
| 碳酸氢钠 | 1分钟26秒 | 4.2h | 颗粒大小整齐,颜色均一 |
| 碳酸钠 | 3分钟46秒 | 3.5h | 颗粒大小整齐,颜色均一 |
| 碳酸钙 | 5分钟09秒 | 1.2h | 颗粒大小整齐,颜色均一 |
由结果看,碳酸氢钠起浮时间最短、持浮力时间最长,故将其确定为裂褶菌素胃漂浮片起泡剂。
试验例3
裂褶菌素胃漂浮片硬度的确定
| 硬度(kg/cm2) | 起浮时间 |
| 1 | 25秒 |
| 2 | 3分钟06秒 |
| 3 | 4分钟11秒 |
| 4 | 5分钟11秒 |
| 大于5 | - |
注:-表示25分钟内不能浮起;25分钟内若不能浮起,将不进行后续试验。
为不影响片剂漂浮性能,同时需保证片剂在包装、运送、贮存过程中的完整性,以及在体内的正常释放,压片时调整上冲压力至片剂硬度为2-3Kg/ cm2。
试验例4
考察裂褶菌素胃漂浮片释放度考察(人工胃液)
| 释放度% | 1h | 2h | 4h | 6h | 8h | 12h |
| 实施例1 | 42.7 | 65.7 | 86.1 | 98.9 | 99.2 | 99.5 |
| 实施例2 | 22.5 | 45.6 | 60.8 | 84.9 | 96.3 | 99.6 |
| 实施例3 | 36.1 | 51.8 | 77.7 | 98.4 | 99.2 | 99.5 |
| 裂褶菌素普通片 | 99.6 | 99.8 | - | - | - | - |
由试验结果看,对比裂褶菌素普通片,褶菌素胃漂浮片具有缓释效果,作用时间长,本发明实施例2效果最优。
试验例5
本发明实施例1-3制备的裂褶菌素胃漂浮片与普通片剂对比例实验数据记录如下:
| 给药次数(次/日) | 药物作用时间(h) | 药物生物利用度(%) | 含量(%) | |
| 实施例1 | 2 | 8 | 84.2 | 99.5 |
| 实施例2 | 2 | 12 | 91.5 | 99.8 |
| 实施例3 | 2 | 8.5 | 86.7 | 99.6 |
| 裂褶菌素普通片 | 3 | 4 | 60.3 | 99.4 |
结果表明,对比裂褶菌素普通片,本发明实施例1-3药物作用时间均更长,生物利用度均提高,而本发明实施例2效果最优。
Claims (8)
1.一种裂褶菌素胃漂浮片,其特征在于,该裂褶菌素胃漂浮片成分重量百分比为:裂褶菌素1-15%,乙基纤维素1-25%,聚乙二醇5-65%、壳聚糖5-40%,碳酸氢钠1-20%。
2.根据权利要求1所述一种裂褶菌素胃漂浮片,其特征在于,该裂褶菌素胃漂浮片成分重量百分比为:裂褶菌素1-12%,乙基纤维素1-22%,聚乙二醇25-55%、壳聚糖5-35%,碳酸氢钠1-15%。
3.根据权利要求1所述一种裂褶菌素胃漂浮片,其特征在于,该裂褶菌素胃漂浮片成分重量百分比为:裂褶菌素7-12%,乙基纤维素14-20%,聚乙二醇38-42%、壳聚糖22-24%,碳酸氢钠5-12%。
4.根据权利要求1所述一种裂褶菌素胃漂浮片,其特征在于,胃漂浮片的制备方法为:
1)将裂褶菌素,乙基纤维素,聚乙二醇、壳聚糖、碳酸氢钠,分别过80目筛;
2)将处方量的聚乙二醇分成2份备用;
3)将处方量3/4的聚乙二醇熔融,加入(1)混合均匀的各原辅料,300-500rpm搅拌,冷却后过40目筛;
4)将步骤3)用55-80%乙醇制软材,过14-30目筛制粒;
5)干燥,整粒,加入剩余的聚乙二醇混匀后压片。
5.根据权利要求4所述一种裂褶菌素胃漂浮片,其特征在于步骤2)所述聚乙二醇分成2份质量比3:1。
6.根据权利要求4所述一种裂褶菌素胃漂浮片,其特征在于步骤3)所述熔融温度为50-80 ℃。
7.根据权利要求4所述一种裂褶菌素胃漂浮片,其特征在于步骤5)干燥温度为40-45℃。
8.根据权利要求4所述一种裂褶菌素胃漂浮片,其特征在于,该方法制备的胃漂浮片硬度为2-3kg/cm2。
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