CN111184942A - 一种治疗黄褐斑的可溶性微针 - Google Patents
一种治疗黄褐斑的可溶性微针 Download PDFInfo
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Abstract
本发明公开了一种治疗黄褐斑的可溶性微针,它是由如下重量体积百分比的原料制成:氨甲环酸0.1~0.5份,基质材料3000~10000份,赋形材料100~2000份,水凝胶0.5‑3.0份,溶剂100‑500份。本发明可溶性微针,具有传输速度快,能够实现精确给药的特点,消除了普通注射引起皮肤损伤、痛疼及感染的副作用,克服了传统的透皮给药贴片难以实现大分子药物输送的缺点,药物缓释作用延长,效果显著,具备临床推广应用价值。
Description
技术领域
本发明具体涉及一种治疗黄褐斑的可溶性微针,属于医疗美容领域。
背景技术
黄褐斑的发病率在人群中的发病率普遍偏高,表现为对称性的黄褐色斑片,常无明显自觉症状,虽不危及生命,但因其发病率高,涉及人群广,病情反复发作,治疗困难,损容甚至毁容事件时有发生,在社会交往频繁,关注容貌的今天,给患者升学、就业、社交及婚姻家庭均带来诸多困扰。目前临床治疗方法众多,外用药物如氢醌、维甲酸类制剂等,不但副作用大,且效果不显著,而激光对黑素细胞增多的先天性色素沉着有非常好疗效,但对获得性色素性疾病黑变病、黄褐斑不但无效,有时甚至会加重症状。
2017年《柳叶刀》首次展示了一种用于接种疫苗的可溶解微针贴片,这种疫苗贴片属于快速释药型,可以瞬间穿透皮肤,封装在微针中的疫苗在针头溶解后释放出来,几分钟后,这些贴片就可以像使用过的绷带一样安全丢弃,将替代已经百余年的注射器接种技术,是医疗界的一大创举。Machekposhti等.Biocompatible polymer microneedle fortopical/dermal delivery of tranexamic acid[J]公开了一种载氨甲环酸的生物相容性聚合物微针,用于治疗黄褐斑,但其成分组成和制备方法较复杂,还含有如偶氮二异丁腈的剧毒性成分,安全性不高。
发明内容
为解决上述问题,一种治疗黄褐斑的可溶性微针,它是由如下重量体积百分比的原料制成:
氨甲环酸0.1~0.5份,基质材料100-500份,赋形材料100~2000份,水凝胶100-600份(其中透明质酸、),溶剂3000~10000份;
所述基质材料为聚乳酸、左旋聚乳酸、聚乳酸羟基乙酸共聚物中任意一种或几种;
所述赋形材料为聚乙烯醇、聚乙烯醇衍生物、羧甲基纤维素、聚乙烯毗咯烷酮、聚乙烯吡咯烷酮衍生物、乳糖、山梨糖醇中任意一种或几种;
所述水凝胶为透明质酸、N-异丙基丙烯酰胺、聚丙烯酸、壳聚糖、聚多巴胺中任意一种或几种溶液;
所述溶剂为去离子水、无水二氯甲烷、无水三氯甲烷、丙酮中任意两种或几种。
进一步地,所述基质材料为聚乳酸羟基乙酸共聚物;
所述赋形材料为聚乙烯醇和羧甲基纤维素;
所述水凝胶为透明质酸溶液;
所述溶剂为无水二氯甲烷。
进一步地,它是由如下重量体积百分比的原料制成:
氨甲环酸0.2份;聚乳酸羟基乙酸共聚物200份;赋形材料500份;透明质酸溶液100份;无水二氯甲烷6000份;所述赋形材料是质量比1:3的聚乙烯醇和羧甲基纤维素组成的混合物。
进一步地,所述透明质酸溶液是透明质酸溶解于去离子水制成的浓度为2%,g/ml的溶液。
本发明还提供了一种制备前述可溶性微针的方法,它包括如下步骤:
1)按配比称取原料;
2)取透明质酸溶液,加氨甲环酸溶解备用;取聚乳酸羟基乙酸共聚物,加无水二氯甲烷混匀备用;
3)将步骤2)所得溶液混匀,再加入赋形材料混匀,注入微针模具,室温干燥0.5~2h,脱模后即得。
进一步地,所述微针模具的制备方法为:
取聚二甲基硅氧烷固体,用激光雕刻机在其表面打孔,再依次用乙醇、水超声清洗60min,120℃烘干,即得。
更进一步地,所述孔为圆锥形,长度500,600,800,1000或1200μm,直径150,200或250μm;所述聚二甲基硅氧烷固体表面共8*8,5*5或10*10个孔位,孔位间距为0.06~0.12mm。
进一步地,所述注入用设备为电动注塑机,优选电动注塑机BattenfeldMicroPower5。
本发明最后提供了一种前述可溶性微针在制备治疗色素增多和/或色素紊乱的药物中的用途。
进一步地,所述药物是治疗黄褐斑的药物。
本发明可溶性微针,具有传输速度快,能够实现精确给药的特点,消除了普通注射引起皮肤损伤、痛疼及感染的副作用,克服了传统的透皮给药贴片难以实现大分子药物输送的缺点。本发明通过多功能水凝胶的调节作用,使药物缓释作用延长,效果显著,具备临床推广应用价值。
显然,根据本发明的上述内容,按照本领域的普通技术知识和惯用手段,在不脱离本发明上述基本技术思想前提下,还可以做出其它多种形式的修改、替换或变更。
以下通过实施例形式的具体实施方式,对本发明的上述内容再作进一步的详细说明。但不应将此理解为本发明上述主题的范围仅限于以下的实例。凡基于本发明上述内容所实现的技术均属于本发明的范围。
附图说明
图1本发明可溶性微针数码相机图
图2本发明可溶性微针扫描电镜图
图3氨甲环酸微针贴片治疗效果
具体实施方式
实施例1、本发明载氨甲环酸可溶性微针制备
1)微针模具制备:取聚二甲基硅氧烷固体,用激光雕刻机在其表面打孔,孔洞为圆锥形,其长度为500μm,直径为150μm,共8*8个孔位,孔位间距0.08mm,再依次用乙醇、水超声清洗60min,120℃烘干,即得
2)取透明质酸2μg,加入98μL去离子水中搅拌均匀得浓度为2%,g/ml的水凝胶,将0.2μg氨甲环酸加入该水凝胶中混匀;取200μg聚乳酸羟基乙酸共聚物(PLGA)加入6000μL无水二氯乙烷1200r/min搅拌均匀;
3)将上述两者混匀后,依次加入125μg聚乙烯醇和375μg羧甲基纤维素后,180℃用磁力搅拌机匀速搅拌2-5h,得到均匀的糊状物,用电动注塑机Battenfeld MicroPower5注入步骤1)的微针模具中,室温干燥0.5~2h,脱模后即得。
实施例2、本发明载氨甲环酸可溶性微针制备
1)微针模具制备:取聚二甲基硅氧烷固体,用激光雕刻机在其表面打孔,孔洞为圆锥形,长度为600μm,直径为200μm,共5*5个孔位,孔位间距0.12mm,再依次用乙醇、水超声清洗60min,120℃烘干,即得
2)取透明质酸2μg,加入98μL去离子水中搅拌均匀得浓度为2%,g/ml的水凝胶,将0.2μg氨甲环酸加入该水凝胶中混匀;取200μg聚乳酸羟基乙酸共聚物(PLGA)加入6000μL无水二氯乙烷1200r/min搅拌均匀;
3)将上述两者混匀后,依次加入125μg聚乙烯醇和375μg羧甲基纤维素后,180℃用磁力搅拌机匀速搅拌2-5h,得到均匀的糊状物,用电动注塑机Battenfeld MicroPower5注入步骤1)的微针模具中,室温干燥0.5~2h,脱模后即得。
实施例3、本发明载氨甲环酸可溶性微针制备
1)微针模具制备:取聚二甲基硅氧烷固体,用激光雕刻机在其表面打孔,孔洞为圆锥形,长度为1000μm,直径为250μm,共个10*10孔位,孔位间距0.06mm,再依次用乙醇、水超声清洗60min,120℃烘干,即得
2)取透明质酸2μg,加入98μL去离子水中搅拌均匀得浓度为2%,g/ml的水凝胶,将0.2μg氨甲环酸加入该水凝胶中混匀;取200μg聚乳酸羟基乙酸共聚物(PLGA)加入6000μL无水二氯乙烷1200r/min搅拌均匀;
3)将上述两者混匀后,依次加入125μg聚乙烯醇和375μg羧甲基纤维素后,180℃用磁力搅拌机匀速搅拌2-5h,得到均匀的糊状物,用电动注塑机Battenfeld MicroPower5注入步骤1)的微针模具中,室温干燥0.5~2h,脱模后即得。
实施例4、本发明载氨甲环酸可溶性微针制备
1)微针模具制备:取聚二甲基硅氧烷固体,用激光雕刻机在其表面打孔,孔洞为圆锥形,长度为1200μm,直径为200μm,共个10*10孔位,孔位间距0.06mm,再依次用乙醇、水超声清洗60min,120℃烘干,即得
2)取透明质酸2μg,加入98μL去离子水中搅拌均匀得浓度为2%,g/ml的水凝胶,将0.2μg氨甲环酸加入该水凝胶中混匀;取200μg聚乳酸羟基乙酸共聚物(PLGA)加入6000μL无水二氯乙烷1200r/min搅拌均匀;
3)将上述两者混匀后,依次加入125μg聚乙烯醇和375μg羧甲基纤维素后,180℃用磁力搅拌机匀速搅拌2-5h,得到均匀的糊状物,用电动注塑机Battenfeld MicroPower5注入步骤1)的微针模具中,室温干燥0.5~2h,脱模后即得。
以下通过试验例来说明本发明的有益效果。
实验例1临床试验
1、试验方法
选取30例女性面部黄褐斑患者,年龄28~55岁,诊断标准参照《黄褐斑的临床诊断及疗效标准》,根据随机对照表,单数患者左侧面部为实验侧(实施例1制备的微针贴片),右侧为对照侧(涂抹市售氨甲环酸注射液);双数患者右侧面部为实验侧(实施例1制备的微针贴片,图1~图2),左侧为对照侧(涂抹市售氨甲环酸注射液)。治疗12周,对比效果。
2、疗效和皮肤受损判定标准
疗效:参照《黄褐斑的临床诊断及疗效标准》,基本治愈:皮损面积少>90%,色素基本消退;显效:皮损面积减少>60%,色素明显变淡;好转:皮损面积减少>30%,色素变淡;无效:色素无明显改变。
皮肤受损:参照《黄褐斑的临床治疗后下降指数诊断及疗效标准》中皮损评分标准评分,同时,通过问卷形式,调查患者对疗效的满意度,分为非常满意(改善≥75%)、满意(改善50%~75%)、一般(改善25%~50%)、不满意(改善≤25%),统计满意率。满意率=(非常满意+满意+一般)例数/总例数×100%。
3、结果
黄褐斑疗效结果见表1,图3,皮肤受损情况见表2~表3。
表1疗效比较(例,%)
表2患者治疗前后皮损评分及治疗后下降指数比较
表3自我评价(例,%)
从上述结果可见:本发明可溶性微针有效率达90%,满意度达80%,整体疗效,且均未见色素减退、接触性皮炎等不良反应,安全性高。
综上,本发明可溶性微针,具有传输速度快,能够实现精确给药的特点,消除了普通注射引起皮肤损伤、痛疼及感染的副作用,克服了传统的透皮给药贴片难以实现大分子药物输送的缺点。本发明通过多功能水凝胶的调节作用,使药物缓释作用延长,效果显著,具备临床推广应用价值。
Claims (10)
1.一种治疗黄褐斑的可溶性微针,其特征在于:它是由如下重量体积份的原料制成:
氨甲环酸0.1~0.5份,基质材料100-500份,赋形材料100~2000份,水凝胶100-600份,溶剂3000~10000份;
所述基质材料为聚乳酸、左旋聚乳酸、聚乳酸羟基乙酸共聚物中任意一种或几种;
所述赋形材料为聚乙烯醇、聚乙烯醇衍生物、羧甲基纤维素、聚乙烯吡咯烷酮、聚乙烯吡咯烷酮衍生物、乳糖、山梨糖醇中任意一种或几种;
所述水凝胶为透明质酸、N-异丙基丙烯酰胺、聚丙烯酸、壳聚糖、聚多巴胺中任意一种或几种的溶液;
所述溶剂为去离子水、无水二氯甲烷、无水三氯甲烷、丙酮中任意一种或几种。
2.根据权利要求1所述可溶性微针,其特征在于:
所述基质材料为聚乳酸羟基乙酸共聚物;
所述赋形材料为聚乙烯醇和羧甲基纤维素;
所述水凝胶为透明质酸溶液;
所述溶剂为无水二氯甲烷。
3.根据权利要求2所述可溶性微针,其特征在于:它是由如下重量体积份的原料制成:
氨甲环酸0.2份;聚乳酸羟基乙酸共聚物200份;赋形材料500份;透明质酸溶液100份;无水二氯甲烷6000份;所述赋形材料是质量比1:3的聚乙烯醇和羧甲基纤维素组成的混合物。
4.根据权利要求3所述可溶性微针,其特征在于:所述透明质酸溶液是透明质酸溶解于去离子水制成的浓度为2%,g/ml的溶液。
5.一种制备权利要求3或4所述可溶性微针的方法,其特征在于:它包括如下步骤:
1)按配比称取原料;
2)取透明质酸溶液,加氨甲环酸溶解备用;取聚乳酸羟基乙酸共聚物,加无水二氯甲烷混匀备用;
3)将步骤2)所得溶液混匀,再加入赋形材料混匀,注入微针模具,室温干燥0.5~2h,脱模后即得。
6.根据权利要求5所述的制备方法,其特征在于:所述微针模具的制备方法为:
取聚二甲基硅氧烷固体,用激光雕刻机在其表面打孔,再依次用乙醇、水超声清洗60min,120℃烘干,即得。
7.根据权利要求6所述的制备方法,其特征在于:所述孔为圆锥形,长度500,600,800,1000或1200μm,直径150,200或250μm;所述聚二甲基硅氧烷固体表面共8*8,5*5或10*10个孔位,孔位间距为0.06~0.12mm。
8.根据权利要求5所述制备方法,其特征在于:所述注入用设备为电动注塑机,优选电动注塑机Battenfeld MicroPower5。
9.权利要求1~3任意一项所述的可溶性微针在制备治疗色素增多和/或色素紊乱的药物中的用途。
10.根据权利要求9所述的用途,其特征在于:所述药物是治疗黄褐斑的药物。
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