CN100534434C - 透明质酸钠地塞米松脂肪乳制剂及其应用 - Google Patents
透明质酸钠地塞米松脂肪乳制剂及其应用 Download PDFInfo
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- CN100534434C CN100534434C CNB2006100428081A CN200610042808A CN100534434C CN 100534434 C CN100534434 C CN 100534434C CN B2006100428081 A CNB2006100428081 A CN B2006100428081A CN 200610042808 A CN200610042808 A CN 200610042808A CN 100534434 C CN100534434 C CN 100534434C
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- Medicinal Preparation (AREA)
Abstract
本发明公开了透明质酸钠地塞米松脂肪乳制剂的配方和用于制备治疗关节炎的药物应用,配方包含的主要组分有地塞米松或地塞米松衍生物,作为乳剂包材、缓释剂的卵磷脂,作为乳剂制剂稳定剂、软组织和骨关节润滑剂、消炎辅助剂的透明质酸钠,作为抗氧化剂的维生素E,由全部或部分上述原料制备的透明质酸钠地塞米松脂肪乳制剂,该制剂有效的利用了脂肪乳递药技术和透明质酸钠对软组织和骨关节润滑和抗炎辅助功能,显著的增加了制剂的黏度,提高了制剂的稳定性,延长了制剂的缓释性能,增强了药物的抗炎作用,有效降低了关节炎引起的疼痛,使各项关节炎症状均获得显著性改善。由于该制剂具有良好的生物相容性,能在体内完全代谢,且副作用轻微。
Description
技术领域
本发明涉及一种药物,特别是一种透明质酸钠地塞米松脂肪乳制剂,该制剂能够作为用于制备治疗关节炎的药物应用。
背景技术
骨关节炎(Osteoarthritis,OA)是一种由多种原因所致的慢性退行性关节病变,以关节软骨变性、破坏及骨质增生为主要特征[1]。其发病与年龄、体质量、炎症、外伤、遗传等多种因素有关,无明显地域及种族差异,是人类致残的重要病因之一[2]。临床上尚缺乏有效的根治措施和药物。
以下是发明人经检索给出的参考文献:
[1]Hunter DJ,Felson DT.Osteoarthritis.BMJ.2006.Mar 18;332(7542):639-42。
[2]Anderson JJ,Felson DT.Factors associated with osteoarthritis of theknee in the first national health and nutrition examination survey(HANES I).Evidence for an association with overweight,race,and physical demands ofwork.Am J Epidemiol,1988,28:179-189。
[3]陈涛,惠民权,傅经国,王九成,脂肪乳药物制剂的研究进展;世界最新医学信息文摘,2004,(5):19-22。
[4]刘克敏,陈维钧。透明质酸关节内注射治疗骨关节炎。中华实验外科杂志,1993,4:164-165。
[5]Stein A,Yassouridis A,Szopko C,Helmke K,Stein C.Intraarticularmorphine versus dexamethasone in chronic arthritis.Pain.1999,83(3):525-532。
[6]赵海鹰,地塞米松临床应用近况。医药导报,1999,(1):50。
发明内容
本发明旨在利用透明质酸钠和脂肪乳的协同优势,制备可以供临床治疗和控制关节炎的地塞米松药物乳剂,为临床上预防与治疗关节炎提供有效而价廉的药物。
为了实现上述任务,本发明采取如下的技术解决方案:
一种透明质酸钠地塞米松脂肪乳制剂,其特征在于,制得的该制剂中含有:
作为药物的地塞米松或地塞米松衍生物,其用量在0.1~40mg·ml-1;
作为脂肪乳包材、缓释剂的卵磷脂,其用量在(0.1%~10%);
作为乳剂制剂稳定剂、软组织和骨关节润滑剂、消炎辅助剂的透明质酸钠,其用量占制剂体积比的0.001-3%;
作为抗氧化剂的维生素E,其用量占制剂体积比的0-1%。
上述地塞米松衍生物为地塞米松的脂肪酸衍生物,或其他脂溶性化合物修饰的地塞米松衍生物。
上述脂肪乳包材、缓释剂的卵磷脂是蛋黄卵磷脂、大豆卵磷脂、氢化蛋黄卵磷脂、氢化大豆卵磷脂或人工合成卵磷脂。
脂肪乳(lipid emulsion or fat emulsion)是近年来发展较快的药物新剂型,具有很高的临床和经济价值[3]。脂肪乳是以植物油(主要成分为脂肪酸甘油三酯)、磷脂乳化剂、等渗剂和注射用水制成的稳定的水包油型(O/W)乳剂,可供静脉或肌肉局部注射,能完全被机体代谢和利用。脂肪乳的安全性能好,无刺激,是临床治疗中广泛使用的新剂型之一。脂肪乳的粒径小且分布均匀,稳定性好,具有多功能的定向药物载,能明显降低药物的毒副作用,减少药物的刺激性,提高生物利用度,并具有长效缓释作用。
透明质酸钠(sodium hyaluronate)是由N-乙酰葡萄糖醛酸反复交替形成的一种高分子多糖体外源性生物材料,具有高度的粘弹性、可塑性、以及良好的生物相容性,在预防粘连和修复软组织方面有明显作用。透明质酸钠可以形成无序的纤维网络结构隔离在组织表面,形成隔离空间,产生生物屏障,因此可阻碍外源性组织细胞靠近损伤处,从而抑制粘连。使炎症浆膜与正常浆膜隔离。它还可以抑制粒细胞的游走及活性,刺激巨噬细胞作用,抑制炎证反应,减少术后粘连的形成。透明质酸钠与蛋白质形的复合物覆盖在关节表面,保护关节软骨,起到润滑、缓冲作用[4]。同时可与疼痛受体结合或与某些致痛的大分子物质结合,减轻或消除关节疼痛。有效抑制缓激肽等炎症介质引起的关节软骨退变,防止关节粘连、挛缩。是骨关节炎理想的润滑剂,外科、妇科、骨科手术、肌腱手术良好的防粘剂。
地塞米松属于肾上腺皮质激素类药物,有抗炎和抗免疫作用。在一般剂量下,激素主要通过抑制前列腺素的合成达到抗炎作用。它能降低毛细血管的通透性,抑制炎性浸润和渗出,并能使细胞间质的水肿消退,缓解关节肿痛。在慢性炎症和急性炎症的后期,激素可抑制成纤维细胞的增生和肉芽组织的形[5]成,从而减轻炎症引起的疤痕和粘连。激素对于控制活动期类风湿关节炎的炎症还是很有帮助的。但是,长程用药或超大剂量用药可引起柯兴(cushing’s)综合征、肱或股骨头缺血性坏死、骨质疏松或骨折(包括脊椎压缩性骨折、长骨病理性骨折)、肌无力、肌萎缩、低血钾综合征、胃肠道刺激(恶心、呕吐)、胰腺炎、消化性溃疡或肠穿孔等严重的副作用[6]。
将地塞米松制备成透明质酸钠脂肪乳制剂,可以保持药物在注射局部的高浓度,防止了药物进入血液,即减少了全身给药引起的毒副作用,又强化了局部的治疗效果。溶解在大豆油中的地塞米松可以缓慢扩散到炎症部位,起到了缓释的效果,可以显著减少用药次数和延长药物的作用时间。而加入透明质酸钠可以提高药物制剂的稳定性,增加药物在关节腔的附着力,可以提高药物的治疗效果。
综上所述,本发明综合了脂肪乳制剂递药技术和透明质酸钠对治疗关节炎的物理化学功能,具有以下五大优势:
(1)本发明可将难溶性和脂溶性的地塞米松或地塞米松衍生物药物包封在脂肪乳制剂中避免了使用有副作用的助溶剂;
(2)药物包封在脂肪乳制剂中可以增加药物的吸收、增强药效;
(3)脂肪乳制剂具有缓释作用,可以延长药物的作用时间;
(4)加入透明质酸钠可以提高药物制剂的稳定性,增加药物在关节腔的附着力;
(5)可以帮助和提高药物的局部定位释药,从而提高药物的治疗效果。避免了全身给药或药物进入血液引起的毒副作用。
具体实施方式
本发明对透明质酸钠地塞米松脂肪乳制剂配方所列药物在处方中的用量范围进行了验证。在本发明的工艺和条件下,当脂肪乳处方除了卵磷脂用量依药物的用量相应调整外,其他组分和用量保持固定不变,地塞米松或地塞米松衍生物药物的用量在0.1~40mg·ml-1范围内的任一用量都保证可以制成稳定的最终产品。虽然原则上药物的含量在0.1mg·ml-1以下也可以制成稳定的脂肪乳制剂,但是其药物浓度达不到有效的药用浓度,已无临床意义,故不在实施例中加以考察。
一、透明质酸钠地塞米松脂肪乳制剂制备实施例
1、不同浓度药物的脂肪乳制剂(仅以棕榈酸地塞米松为例)
实施例1:
低含量棕榈酸地塞米松脂肪乳的制剂(0.1mg·ml-1棕榈酸地塞米松)
处方:
棕榈酸地塞米松 | 100mg |
大豆油(注射用) | 99.0g |
卵磷脂(注射用) | 12g |
维生素E(注射用) | 20ml |
透明质酸钠 | 10ml |
甘油 | 22g |
注射用水 | 加至1000ml |
取大豆油99g,加入卵磷脂12g,在氮气保护的条件下,加热至75℃,搅拌约10min使卵磷脂充分溶解,然后加入棕榈酸地塞米松100mg和20ml维生素E,溶解混匀。另取注射用水800ml,加入甘油22g。在氮气保护的条件下,将棕榈酸地塞米松磷脂油溶液加入甘油水溶液中,制成初乳,然后加入10ml透明质酸钠,混匀,并调节总量至1000ml。高压均质机均质7-8次,均质压力为100MPa,至粒径范围在180nm-300nm,调节pH 7.0-8.0,过滤,分装,通入氮气,密封。115℃灭菌30min,灯检合格后,包装,在25℃以下贮藏。
实施例2:
高含量棕榈酸地塞米松脂肪乳的制剂(40mg·ml-1棕榈酸地塞米松)
处方:
棕榈酸地塞米松 | 40g |
大豆油(注射用) | 99.0g |
卵磷脂(注射用) | 12g |
维生素E(注射用) | 20ml |
透明质酸钠 | 10ml |
甘油 | 22g |
注射用水 | 加至1000ml |
取大豆油99g,加入卵磷脂12g,在氮气保护的条件下,加热至75℃,搅拌约10min使卵磷脂充分溶解,然后加入棕榈酸地塞米松40g和20ml维生素E,溶解混匀。另取注射用水800ml,加入甘油22g。在氮气保护的条件下,将棕榈酸地塞米松磷脂油溶液加入甘油水溶液中,制成初乳,然后加入10ml透明质酸钠,混匀,并调节总量至1000ml。高压均质机均质7-8次,均质压力为100MPa,至粒径范围在180nm-300nm,调节pH 7.0-8.0,过滤,分装,通入氮气,密封。115℃灭菌30min,灯检合格后,包装,在25℃以下贮藏。
实施例3:
低含量棕榈酸地塞米松脂肪乳的制剂(5mg·ml-1棕榈酸地塞米松)
棕榈酸地塞米松 | 500mg |
大豆油(注射用) | 99.0g |
卵磷脂(注射用) | 12g |
维生素E(注射用) | 20ml |
透明质酸钠 | 10ml |
甘油 | 22g |
注射用水 | 加至1000ml |
制备方法同实施例2。
2、不同浓度透明质酸钠的脂肪乳制剂(仅以棕榈酸地塞米松为例)
实施例4:
低含量透明质酸钠地塞米松脂肪乳制剂(0.001%v/v透明质酸钠)
处方:
棕榈酸地塞米松 | 500mg |
大豆油(注射用) | 99.0g |
卵磷脂(注射用) | 12g |
维生素E(注射用) | 20ml |
透明质酸钠 | 1ml |
甘油 | 22g |
注射用水 | 加至1000ml |
取大豆油99g,加入卵磷脂12g,在氮气保护的条件下,加热至75℃,搅拌约10min使卵磷脂充分溶解,然后加入棕榈酸地塞米松500mg和20ml维生素E,溶解混匀。另取注射用水800ml,加入甘油22g。在氮气保护的条件下,将棕榈酸地塞米松磷脂油溶液加入甘油水溶液中,制成初乳,然后加入1ml透明质酸钠,混匀,并调节总量至1000ml。高压均质机均质7-8次,均质压力为100MPa,至粒径范围在180nm-300nm,调节pH 7.0-8.0,过滤,分装,通入氮气,密封。115℃灭菌30min,灯检合格后,包装,在25℃以下贮藏。
实施例5:
高含量透明质酸钠地塞米松脂肪乳的制剂(3%v/v透明质酸钠)
处方:
棕榈酸地塞米松 | 40g |
大豆油(注射用) | 99.0g |
卵磷脂(注射用) | 12g |
维生素E(注射用) | 20ml |
透明质酸钠 | 30ml |
甘油 | 22g |
注射用水 | 加至1000ml |
取大豆油99g,加入卵磷脂12g,在氮气保护的条件下,加热至75℃,搅拌约10min使卵磷脂充分溶解,然后加入棕榈酸地塞米松40g和20ml维生素E,溶解混匀。另取注射用水800ml,加入甘油22g。在氮气保护的条件下,将棕榈酸地塞米松磷脂油溶液加入甘油水溶液中,制成初乳,然后加入30ml透明质酸钠,混匀,并调节总量至1000ml。高压均质机均质7~8次,均质压力为100MPa,至粒径范围在180nm~300nm,调节pH 7.0-8.0,过滤,分装,通入氮气,密封。115℃灭菌30min,灯检合格后,包装,在25℃以下贮藏。
二、透明质酸钠地塞米松脂肪乳剂局部给药对兔骨关节炎的实验研究
2.1透明质酸钠地塞米松脂肪乳剂局部给药对兔骨关节炎的治疗作用
2.1.1材料和方法
动物:
健康雄性新西兰白兔40只,体重2-3Kg;6-8月龄;随机分为正常组、模型组、地塞米松脂肪乳剂组与透明质酸钠地塞米松脂肪乳剂组,每组各10只。
试剂:
白介素1(IL-1)、白介素6(IL-6)、肿瘤坏死因子α(TNF-α)和基质金属蛋白酶3(MMP-3)试剂盒由美国DSL生产。丙二醛(MDA)、超氧化物歧化酶(SOD)和考马斯亮蓝蛋白试剂盒由南京建成生物工程研究所提供。建立Hulth模型:
参考文献(吴海山,钱其荣,顾其胜:关节内注射透明质酸 钠预防兔骨关节炎的实验研究。中华骨科杂志,1996,16:37-39。),以3%戊巴比妥钠30mg/Kg静脉麻醉,随机选取左/右膝手术。做髌内侧切口,切断前、后交叉韧带,切除内侧半月板并切断内侧副韧带,注意保护关节软骨面不受损伤,逐层缝合切口。术后不固定伤肢,分笼饲养。
给药方法:
给药组动物于术后当时分别在关节内注射地塞米松脂肪乳剂与透明质酸钠地塞米松脂肪乳剂各1ml,其中透明质酸钠地塞米松脂肪乳剂含有透明质酸钠1%(体积比)及地塞米松4mg·ml-1;地塞米松脂肪乳剂含有地塞米松4mg·ml-1。其后每间隔1周注射一次,直至处死。对照组则注射等量生理盐水。
观察指标:
(1)组织形态学改变,按术前分组,于术后12周处死动物,立即解剖膝关节,在手术显微镜下观察,参照文献(吴海山,钱其荣,顾其胜:关节内注射透明质酸钠预防兔骨关节炎的实验研究。中华骨科杂志,1996,16:37-39。)对骨关节炎的分度方法将其软骨退变程度分为I度:软骨表面软化但平滑;II度:软骨变薄出现小纤维束状变;III度:软骨明显纤维束状变;IV度:磨损性纤维束状变伴软骨下骨外露及骨硬化。
(2)Mankin’s评分:取股骨内髁关节软骨标本进行常规固定,脱钙,石蜡包埋,切片,HE染色,在光学显微镜下观察。并按Mankin’s评分标准评分(文献:Mankin HJ,Dorfman H,Lippielo L,et al.Biochemical andmetabolic abnormalities in articular cartilage from osteoarthritic human hips.II.Correlation of morphology with biochemical and metabolic data.J Bone JointSurg,1971,53:523-531)。(3)生化指标:①关节滑液内白介素-1(IL-1);②白介素-6(IL-6);③肿瘤坏死因子α(TNF-α);④基质金属蛋白酶3(MMP-3);以上四项取关节滑液离心后样本,采用双抗夹心ELISA法,分别测定。⑤滑膜中超氧化物歧化酶(SOD)活性测定:将所切除的滑膜组织制成10%组织匀浆,邻苯三酚法测定SOD活性。⑥丙二醛(MDA)测定:动物处死前经耳缘静脉取血50μl,硫代巴比妥酸(TBA)的分光光度法测定血浆MDA含量。
统计学处理:
数据用均数±标准差(x±s)表示,用SPSS 11.0统计学软件进行独立样本均数的t检验。
2.1.2结果
2.1.2.1组织形态学改变
大体及手术显微镜下观察,模型组10只动物分度结果为III度3只IV度7只,表明模型复制成功。与模型组相比,透明质酸钠地塞米松脂肪乳剂治疗组与地塞米松脂防乳剂治疗组的软骨退变程度显著降低,与地塞米松脂肪乳剂治疗组的软骨退变程度相比,透明质酸钠地塞米松脂肪乳剂治疗组显效更明显,见表1。
表1经透明质酸钠地塞米松脂肪乳剂治疗,兔OA模型组织形态学评级
组别 | 正常 | I | II | III | IV |
正常 | 10 | ||||
模型 | 3 | 7 | |||
地塞米松脂肪乳剂 | 1 | 5 | 4 | ||
透明质酸钠地塞米松脂肪乳剂 | 3 | 6 | 1 |
2.1.2.2光镜观察
采用Mankin’s分级评分方法计分,模型组得分为(5.94±1.02)与正常对照组(0.48±0.08)评分水平显著升高(P<0.01)。与模型组相比,透明质酸钠地塞米松脂肪乳剂组得分(2.01±0.72)地塞米松脂肪乳剂组的评分(3.64±0.81)分别明显降低(P<0.01),并且透明质酸钠地塞米松脂肪乳剂组评分显著低于地塞米松脂肪乳剂组(P<0.01),表明透明质酸钠地塞米松脂肪乳剂对兔OA模型具更显著的效果。
2.1.2.3骨关节滑液和血液生化指标测定
透明质酸钠地塞米松脂肪乳剂组和地塞米松脂肪乳剂组与模型组的关节滑液内白介素-1(IL-1)、白介素-6(IL-6)、肿瘤坏死因子α(TNF-α)、基质金属蛋白酶3(MMP-3)含量及血液中丙二醛(MDA)水平相比,显著降低(P<0.05),同时关节滑膜中超氧化物歧化酶(SOD)活性显著提高(P<0.05),且透明质酸钠地塞米松脂肪乳剂组作用更显著,见表2、3。
表2经透明质酸钠地塞米松脂肪乳剂治疗,兔OA模型关节滑液内IL-1、IL-6、TNF-α、MMP-3的变化
组别 | IL-1(ng·L<sup>-1</sup>) | IL-6(ng·L<sup>-1</sup>) | TNF-α(ng·L<sup>-1</sup>) | MMP-3(μg·L<sup>-1</sup>) |
正常 | 9.84±0.33 | 10.21±0.24 | 11.98±0.66 | 11.08±0.42 |
模型 | 15.67±0.43<sup>*</sup> | 16.37±0.57 | 23.07±.035 | 18.22±0.20 |
地塞米松脂肪乳剂 | 12.34±0.63 | 13.11±0.39<sup>*</sup> | 14.98±0.68<sup>*</sup> | 14.29±0.33<sup>*</sup> |
透明质酸钠地塞米松脂肪乳剂 | 10.55±0.31<sup>**</sup> | 11.08±0.41<sup>**</sup> | 12.55±0.38<sup>**</sup> | 12.04±0.11<sup>**</sup> |
注:与模型组比较,*P<0.01;与模型组比较,**P<0.01;与地塞米松脂肪乳剂组比较,**P<0.05。
表3经透明质酸钠地塞米松脂肪乳剂治疗,兔OA模型关节滑膜SOD活力及血液MDA水平的变化
组别 | MDA(mmol·L<sup>-1</sup>) | SOD(μ·mg<sup>-1</sup>·pro) |
正常 | 1.62±0.22 | 128.60±6.37 |
模型 | 3.32±0.37 | 54.13±5.28 |
地塞米松脂肪乳剂 | 2.39±0.44<sup>*</sup> | 89.59±7.01<sup>*</sup> |
透明质酸钠地塞米松脂肪乳剂 | 1.70±0.24<sup>**</sup> | 111.69±4.88<sup>**</sup> |
注:与模型组比较,*P<0.01;与模型组比较,**P<0.01;与地塞米松脂肪乳剂组比较,**P<0.05。
2.1.3结论
骨关节炎(Osteoarthritis,OA)是一种由多种原因所致的慢性退行性关节病变,临床表现为关节软骨变性、破坏及骨质增生,目前尚缺乏有效的根治措施和药物。临床上常采用透明质酸关节内注射进行治疗,可以缓解疼痛,减轻症状。透明质酸是一种粘多糖,在关节内由滑膜的B细胞分泌,是关节滑液中以及软骨基质内的重要成分,对关节滑膜的润滑、软骨的保护以及滑液的维持均产生重要作用(文献:Peyron JG,Balazs ES.Preliminaryclinical assessment of Nahyaluronate injection into human arthritic joint.Pathologic Biology,1974,74:731)。研究显示地塞米松关节内注射也对OA具有治疗作用。地塞米松属于肾上腺皮质激素类药物,有抗炎和免疫抑制作用。主要通过抑制前列腺素的合成达到抗炎效果。它能降低毛细血管的通透性,抑制炎性浸润和渗出,并能使细胞间质的水肿消退,达到预防和治疗OA的目的。实验中采用的透明质酸钠地塞米松脂肪乳剂是将地塞米松包封在脂肪乳制剂中同时加入透明质酸钠,制剂增加了药物协同作用,使主药的吸收增加、药效增强,并且具有缓释作用。由于提高了药物在关节腔的附着力,可以促进药物的局部定位释药,避免药物进入血液引起的毒副作用。
本实验采用Hulth法建立兔膝OA模型。应用透明质酸钠地塞米松脂肪乳剂关节内注射,以观察其对兔膝关节组织形态学的影响及Mankin’s分级评分情况,实验结果显示,与模型组比较,透明质酸钠地塞米松脂肪乳剂和地塞米松脂肪乳剂均使兔膝OA模型软骨退变程度显著降低,同时将透明质酸钠地塞米松脂肪乳剂组与地塞米松脂肪乳剂组的药效进行对比,发现透明质酸钠地塞米松脂肪乳剂组对抑制兔OA模型软骨退变具更显著的效果。
IL-1、IL-6、TNF-α及MMP-3都是机体免疫系统调节骨代谢的主要蛋白质因子,是参与膝OA发病进程中的重要介质(文献:Mathieu P.Interleukin-1:Its role,Its dosage,the difficulties in advances in arthritis.Results of a“pilot”study with diacerheine(ART so)in gonarthrosis.Rev Prat 1999;(Suppl13):S15-18;郭世绂,性激素和细胞因子与骨性关节炎及骨质疏松的关系.国外医学内分泌分册2003;23(2),98-100;Cawston T,Billillgton C,CleaverC,et al.There gulation of MMPs and TIMOs in cartilage turnover.Ann NYAcad Sci 1999;87(8),120-129)。实验通过检测模型组及治疗组的以上各项指标,表明透明质酸钠地塞米松脂肪乳剂及地塞米松脂肪乳剂均能明显降低兔膝关节OA模型关节滑液内IL-1、IL-6、TNF-α、MMP-3水平。进一步对比实验发现透明质酸钠地塞米松脂肪乳剂与地塞米松脂肪乳剂相比具有更显著的药理活性。
MDA、SOD是检测机体氧自由基水平的常用配对指标,MDA含量高低又间接反映机体细胞受自由基攻击的严重程度,而SOD活力高低间接反映机体清除氧自由基能力,SOD是体内氧自由基的高效清除剂,抑制过氧化反应,参与机体的抗感染免疫机制,抑制炎症反应,所以它的活性影响着炎症发展。透明质酸钠地塞米松脂肪乳剂能明显降低兔膝关节OA模型血液中丙二醛(MDA)水平,同时显著提高模型动物关节滑膜中过氧化物歧化酶(SOD)活性。且作用显著性强于地塞米松脂肪乳剂。
据此,申请人认为:透明质酸钠地塞米松脂肪乳剂对OA有治疗作用且强于地塞米松脂肪乳剂。透明质酸钠地塞米松脂肪乳剂关节内注射不仅可以提高关节内透明质酸的绝对含量,发挥其在软骨基质代谢中的作用,而且可以模拟关节滑液的物理作用,保护关节软骨,减缓退变的发生。同时还可抑制炎症,阻断参与OA发病进程中的重要的介质及其反应,从而达到预防和治疗OA的目的。另外,由于该制剂具有良好的生物相容性,能在体内完全代谢,且副作用轻微。因此这一新制剂的应用为预防及治疗OA提供了一种新的途径。
Claims (2)
1.一种治疗关节炎的透明质酸钠地塞米松脂肪乳制剂,其特征在于,制得该透明质酸钠地塞米松脂肪乳制剂的配方组成为:
棕榈酸地塞米松:100mg~40g,注射用大豆油:99.0g,注射用卵磷脂:12g,注射用维生素E:20ml,透明质酸钠:10ml,甘油:22g,加注射用水至脂肪乳制剂总体积为1000ml。
2.权利要求1所述的治疗关节炎的透明质酸钠地塞米松脂肪乳制剂的制备方法,其特征在于:
取大豆油99g,加入卵磷脂12g,在氮气保护的条件下,加热至75℃,搅拌约10min使卵磷脂充分溶解,然后加入棕榈酸地塞米松和20ml维生素E,溶解均匀,另取注射用水800ml,加入甘油22g,在氮气保护的条件下,将棕榈酸地塞米松磷脂油溶液加入甘油水溶液中,制成初乳,然后加入10ml透明质酸钠,混匀,加注射用水至脂肪乳制剂总体积为1000ml,高压均质机均质7-8次,均质压力为100Mpa,至粒径范围在180nm-300nm,调节pH7.0-8.0,过滤,分装,通入氮气,密封,115℃灭菌30min,灯检合格后,包装,在25℃以下储藏。
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