乙酰螺旋霉素口腔黏附片的性质研究

目的研究乙酰螺旋霉素口腔黏附片的性质。方法以卡波姆934P和羟丙甲基纤维素（HPMC,K4M）为黏附材料,制备乙酰螺旋霉素口腔黏附片,并对其体外膨胀率、黏附力、体外释放度及口腔黏膜滞留性进行考察。结果＂-3卡波姆934P与HPMC的比例为1：1时,各项考察指标均符合要求,体外释药特性符合Higuchi方程,具有较好的缓释性。结论乙酰螺旋霉素口腔黏附片质量理想,值得进一步研究。     

大蒜油口腔黏附片的研究

目的 研制大蒜油口腔黏附片,并考察其生物黏附性及释药性能.方法 采用羟丙基甲基纤维素(HPMC)和卡波姆(Carbopol 934P)为黏附材料,制备不同处方配比的大蒜油口腔黏附片,测定其体外溶胀百分率、黏附力和黏附时间,并采用浆法测定释放度.结果 以HPMC: Carbopol 934P为3:1的处方制得的口腔黏附片较好.结论 成功制备了大蒜油口腔黏附片.     

硫酸沙丁胺醇鼻用原位凝胶的制备及体外释放度考察

目的:制备硫酸沙丁胺醇pH敏感型鼻用凝胶,并考察其体外释放度和黏附力。方法:以卡波姆-934为凝胶基质,采用羟丙基甲基纤维素(HPMC)调节胶凝强度,并考察凝胶体外释放度、黏附力等指标,优选基质处方。结果:鼻用凝胶基质为0.5%卡波姆-934、2%HPMC,其10 h内体外释放度为98.9%,黏附力为72.1 g/cm~2。结论:优选的基质处方可用于制备硫酸沙丁胺醇pH敏感型鼻用凝胶,其质量符合要求。     

法莫替丁生物黏附缓释片释放机制研究木

目的 探讨法莫替丁生物黏附缓释片的释药机制及影响因素.方法 以羟丙基甲基纤维素(HPMC)为骨架材料,卡波姆为生物黏附材料,乳糖为辅料制备生物黏附缓释片,运用Ritger-Peppas方程释放指教n值,评价HPMC、卡渡姆和乳糖对释药速率的影响.结果 生物黏附片的释药速率随HPMC、卡波姆含量增高而减慢,乳糖可以加快释药速率,经处方筛选优化后制备的法莫替丁生物黏附缓释片的释放,是Fick扩散和凝胶骨架溶蚀两种机制的协同作用结果.结论 HPMC、卡波姆和乳糖均可影响法莫替丁生物黏附片中主药的释放,生物黏附缓释片的释药过程可用Ritger-Peppas方程进行描述.     

丁卡因口腔粘附片的研制

目的:研制丁卡因口腔粘附片。考察不同辅料的体外膨胀行为及释药性能。方法:采用聚维酮(PVP)、羟丙甲纤维素(HPMC)、羟丙纤维素(L-HPC)及卡波姆934(CP_(934))为生物粘附材料,以不同配比制备丁卡因口腔粘附片,桨板法测定其释放度。结果:采用CP/HPC、CP/HPMC配比作为粘附材料取得良好效果。     

6-巯基嘌呤结肠黏附缓释微丸的处方筛选及体外释放的研究

目的:制备6-巯基嘌呤结肠黏附缓释微丸,并对释药特性进行研究.方法:以羟丙甲基纤维素K4M和卡波姆为黏附性骨架材料,乳糖为赋形剂.采用湿法制粒包衣锅滚圆法制备载药微丸,并进行Eud-ragit S100包衣.采用正交试验设计进行处方筛选,确定生物黏附材料HPMC、卡波姆的用量及配比与制剂体外释放度的关系.结果:所得微丸的制备工艺简单,微丸大小均匀,能达到缓释12 h的试验设计要求.结论:HPMC、卡波姆的用量及配比对释药速率均有较大影响.优选处方微丸的释药特性符合设计要求.     

咪康唑颊贴缓释片的黏附性能测试方法的建立及处方优化

目的建立咪康唑颊贴缓释片的黏附性能测试方法并优化处方。方法采用自制黏附力测定装置,运用正交试验法,考察乳蛋白和卡波姆974的比例,乳蛋白和卡波姆974的总量,HPMC的用量三个主要影响因素,对咪康唑颊贴缓释片的黏附力和溶胀速率的影响。结果当乳蛋白∶卡波姆974=2∶1,乳蛋白和卡波姆974总量为30 mg,HPMC的量为20 mg时,咪康唑颊贴片的黏附性能最好,可以满足口腔颊贴缓释片的要求。结论自制的黏附力测定装置可以用于咪康唑颊贴缓释片的黏附性能测试。     

冬凌草甲素纳米结晶黏附性缓释片的制备及体外评价

目的制备冬凌草甲素纳米结晶黏附片,考察其体外释放性、黏附性和结晶药物形态。方法采用高压均质法将冬凌草甲素制成纳米结晶,以羟丙甲纤维素(HPMC)和卡波姆为生物黏附材料,甘露醇为稀释剂和支架剂制备冬凌草纳米结晶生物黏附性缓释片。采用紫外分光光度法测定冬凌草甲素的含量,采用正交设计结合多元线性回归,以累计释放率为主要考察指标,考察了HPMC、卡波姆、甘露醇的用量对药物溶出的影响,确定了片剂的优化处方,并对片剂的黏附性和体外药物释放做了考察。结果最佳处方含HPMC31.0%,卡波姆21.7%,甘露醇7.44%。片剂中药物以纳米结晶形式从片剂中溶出,而且具有黏附和缓释作用。结论以最佳制备工艺条件制备纳米结晶片,制备工艺简单,重现性好。同时体外实验表明,冬凌草甲素纳米结晶生物黏附性缓释片显示了纳米结晶与生物黏附的双重优点。     

喷昔洛韦眼用温度敏感原位凝胶的制备及评价（英文）

目的研制以普朗尼克F127为主要基质的喷昔洛韦制剂,以提高其眼部生物利用度。方法通过将HPMC K4M或卡波姆934P与普朗尼克F127复合使用,制备了喷昔洛韦的温度敏感原位凝胶。以胶凝温度、流变学、药物释放特性、药代动力学及眼部刺激性等为指标进行筛选,得到最优化处方。结果使用HPMC K4M或者卡波姆934P均能降低凝胶的胶凝温度,略微增加其粘度,延缓体系中药物的释放速率;药物释放为非Fick扩散;所有处方均未表现出眼部刺激或对角膜的损伤;含卡波姆934P和普朗尼克F127的凝胶体系的眼部生物利用度最高。结论含普朗尼克F127的喷昔洛韦制剂能够以滴眼液的形式给药,而达到眼部温度时可形成凝胶;体内外评价结果表明,含有HPMC K4M或卡波姆934P以及低浓度普朗尼克F127（12%）的喷昔洛韦制剂,提高了药物在眼部的生物利用度,是一种很有前景的眼部给药系统。     

丁卡因口腔粘附片的研制

目的：研制丁卡因口腔粘附片。考察不同辅料的体外膨胀行为及释药性能。方法：采用聚维酮（PVP），羟丙甲纤维素（HPMC），羟丙纤维素（L-HPC）及卡波姆934（CP934）为生物粘附材料，以不同配比制备丁卡因口腔粘附片，桨板法测定其释放度。结果：采用CP/HPC，CP/HPMC配比作为粘附材料取得良好效果。     

芬太尼口腔粘附片的处方研究

研究了芬太尼口腔粘附片的处方，考查了ＨＰＭＣ粘度及Ｃａｒｂｏｐｏｌ的用量对粘附片粘附性及体外释药的影响     

Development and in vitro evaluation of buccoadhesive carvedilol tablets

Buccoadhesive tablets of carvedilol were prepared using HPMC K4M, HPMC K15M and Carbopol 934 as mucoadhesive polymers. Fifteen formulations were developed with varying concentrations of polymers. Formulations of the BC or BD series were composed of HPMC K4M or HPMC K15M in ratios of 1:1 to 1:5 whereas in the BE series Carbopol 934 was used (1:0.25 to 1:1.50). The formulations were tested for in vitro drug release, in vitro bioadhesion, moisture absorption and in vitro drug permeation through porcine buccal mucosa. Formulation BC3 showed maximum release of the drug (88.7 +/- 0.4%) with the Higuchi model release profile and permeated 21.5 +/- 2.9% of the drug (flux 8.35 +/- 0.291 microg h(-1)cm(-2)) permeation coefficient 1.34 +/- 0.05 cm h(-1)) through porcine buccal membrane. BC3 formulation showed 1.62 +/- 0.15 N of peak detachment force and 0.24 +/- 0.11 mJ of work of adhesion. FTIR results showed no evidence of interaction between the drug and polymers. XRD study revealed that the drug is in crystalline form in the polymer matrix. The results indicate that suitable bioadhesive buccal tablets with desired permeability could be prepared.     

A novel ketoconazole bioadhesive effervescent tablet for vaginal delivery: design, in vitro and 'in vivo' evaluation

Bioadhesive tablet formulations of ketoconazole for vaginal delivery were studied. Carbomer (Carbopol 974P, Carbopol 934P), hydroxypropylmethyl cellulose (HPMC) and hydroxypropyl cellulose (HPC) were used as candidate bioadhesive polymers. Effervescent was incorporated into the formulations as a disintegration agent. The swelling behavior and bioadhesive strength of the drug-free tablets were investigated. Carbopol 934P was selected as biopolymer in combination with HPMC or HPC at different ratios to develop five drug-loaded formulations. The swellings, tackiness and in vitro release were studied on the tablets. A good sustained effect and a moderate bioadhesion were obtained with the tablets. The formulation containing 100 mg of effervescent, with the Carbopol 934P:HPC ratio of 1:9, seemed to be the optimum one for the tablet. In vivo drug residence tests were carried out by administering the preferred formulation to female rats. The results showed that the drug remaining followed a one-order model. Even after 24 h of administration in vagina of rats, 17% of the original employed drug was retained on the vaginal tissue. Our study may provide a potential vaginal tablet formulation of ketoconazole against Candida albicans.     

以HPMC为骨架的盐酸丁螺环酮缓释片的制备

以HPMC单用或与卡波姆934p合用，制备盐酸丁螺环酮缓释片并进行体外释放度的测定。结果表明本品可持续释药24h，且加入卡波姆比单用HPMC为骨架具有更好的缓释效果。     

Development of a buccal bioadhesive nicotine tablet formulation for smoking cessation

Bioadhesive buccal tablet formulations for delivery of nicotine into the oral cavity were developed. Carbomer (Carbopol)974P NF) (CP) and alginic acid sodium salt (NaAlg) were used as bioadhesive polymers in combination with hydroxypropyl methylcellulose (HPMC) at different ratios. Magnesium carbonate was incorporated into the formulations as a pH increasing agent. In vitro release and bioadhesion studies were performed on the developed tablets. In the formulations containing CP:HPMC, the NHT released increased with the increasing HPMC concentration whereas a decrease was observed with increasing HPMC concentration in formulations containing NaAlg:HPMC. The bioadhesive properties of the tablets containing NaAlg:HPMC was not affected by the concentration of the NaAlg (P>0.05) but increased significantly with the increasing CP concentration (P>0.05). A decrease in pH of the dissolution medium to acidic values was avoided by incorporation of magnesium hydroxide into the formulations. The developed formulations released NHT for 8h period, and remained intact except for the formulation containing CP:HPMC at 20:80 ratio.     

制霉菌素口腔粘附片的研制及粘附性考察

目的:研制制霉菌素口腔粘附片,并考察其生物粘附性。方法:以卡波姆(CP)、羟丙基甲基纤维素(HPMC)为粘附材料和缓释骨架制备不同处方配比的制霉菌素口腔粘附片,测定其粘附力、粘附时间、溶胀百分比和表面pH值。结果:不同处方配比制备的粘附片生物粘附性差异较大,以CP∶HPMC为1∶1的处方制备的粘附片效果较好。结论:成功制备了制霉菌素口腔粘附片,其可用于进一步的体内、外研究。     

影响葛根总黄酮生物粘附片体外释放度的因素研究

目的 :探讨影响葛根总黄酮生物粘附片释放度的主要因素。方法 :以羟丙基甲基纤维素 (HPMC)与卡波姆 (CP)为生物粘附材料和骨架材料、乳糖为致孔剂制备葛根总黄酮生物粘附片 ;采用转篮法测定释放度 ,以0 1mol/LHCl为溶出介质 ,转速为100r/min ,测定累积释放度 ,同时考察HPMC用量、CP用量、致孔剂种类、乳糖用量、压片颗粒大小、介质 pH等因素对释放度的影响。结果与结论 :HPMC用量、CP用量、致孔剂种类、乳糖用量、压片时颗粒大小、介质 pH等因素对生物粘附片溶出均有明显影响