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Development of a topical liposomal formulation of Amphotericin B for the treatment of cutaneous leishmaniasis.
International Journal for Parasitology: Drugs and Drug Resistance ( IF 4 ) Pub Date : 2019-09-23 , DOI: 10.1016/j.ijpddr.2019.09.004
Mahmoud Reza Jaafari 1 , Mahdi Hatamipour 2 , Seyedeh Hoda Alavizadeh 1 , Azam Abbasi 2 , Zahra Saberi 2 , Sima Rafati 3 , Yasaman Taslimi 3 , Akram Miramin Mohammadi 4 , Ali Khamesipour 4
Affiliation  

BACKGROUND Currently, there is no topical treatment available for any form of cutaneous leishmaniasis (CL) in most of the endemic areas. The aim of the current study was to develop a topical nano-liposomal Amphotericin B (AmB) for the treatment of CL. METHODOLOGY/PRINCIPAL FINDINGS Liposomes containing 0.1, 0.2 and 0.4% AmB (Lip-AmB) were formulated and characterized for the size, entrapment efficiency, long term stability, and skin penetration properties using Franz diffusion cells. Liposomes diameters were around 100 nm with no change during more than 20 months' storage either at 4 °C or at room temperature. Franz diffusion cells studies showed that almost 4% of the applied formulations penetrated across the skin and the highest skin retention (73.92%) observed with Lip-AmB 0.4%. The median effective doses (ED50), the doses of AmB required to kill 50% of L. major amastigotes were 0.151, 0.151, and 0.0856 (μg/mL) in Lip-AmB 0.1, 0.2, 0.4%, respectively. Lip-AmB 0.4% caused 80% reduction in fluorescence intensity of GFP+ L. tropica infected macrophages at 5 μg/mL of AmB concentration. Topical Lip-AmB was applied twice a day for 4 weeks to the skin of BALB/c mice to treat lesions caused by L. major. Results showed the superiority of Lip-AmB 0.4% compared to Lip-AmB 0.2 and 0.1%. The parasite was completely cleared from the skin site of infection and spleens at week 8 and 12 post-infection in mice treated with Lip-AmB 0.4%. The results suggest that topical Lip-AmB 0.4% may be a useful tool in the treatment of CL and merits further investigation.

中文翻译:

两性霉素B局部脂质体制剂的开发,用于治疗皮肤利什曼病。

背景技术目前,在大多数流行地区没有针对任何形式的皮肤利什曼病(CL)的局部治疗。本研究的目的是开发一种局部纳米脂质体两性霉素B(AmB)来治疗CL。方法学/主要发现配制含有0.1%,0.2%和0.4%AmB的脂质体(Lip-AmB),并使用Franz扩散池对脂质体的大小,包封率,长期稳定性和皮肤渗透特性进行表征。脂质体直径约为100 nm,在4°C或室温下保存20个月以上,没有变化。Franz扩散池研究表明,几乎有4%的应用制剂渗透到整个皮肤,使用0.4%的Lip-AmB观察到的皮肤保留率最高(73.92%)。中位有效剂量(ED50),在Lip-AmB中,杀死50%的主要变形杆菌所需的AmB剂量分别为0.151、0.151和0.0856(μg/ mL),分别为0.1%,0.2%和0.4%。在5μg/ mL的AmB浓度下,0.4%的Lip-AmB导致GFP + tropic。L感染的巨噬细胞的荧光强度降低80%。每天两次将局部Lip-AmB应用于BALB / c小鼠的皮肤,持续4周,以治疗由大肠利兹氏菌引起的病变。结果显示Lip-AmB 0.4%优于Lip-AmB 0.2和0.1%。在用0.4%Lip-AmB处理的小鼠中,感染后第8周和第12周,寄生虫已从感染和脾脏的皮肤部位完全清除。结果表明,局部Lip-AmB 0.4%可能是治疗CL的有用工具,值得进一步研究。在5μg/ mL的AmB浓度下,0.4%的Lip-AmB导致GFP + tropic。L感染的巨噬细胞的荧光强度降低80%。每天两次将局部Lip-AmB应用于BALB / c小鼠的皮肤,持续4周,以治疗由大肠利兹氏菌引起的病变。结果显示Lip-AmB 0.4%优于Lip-AmB 0.2和0.1%。在用0.4%Lip-AmB处理的小鼠中,感染后第8周和第12周,寄生虫已从感染和脾脏的皮肤部位完全清除。结果表明,局部Lip-AmB 0.4%可能是治疗CL的有用工具,值得进一步研究。在5μg/ mL的AmB浓度下,0.4%的Lip-AmB导致GFP + tropic。L感染的巨噬细胞的荧光强度降低80%。每天两次将局部Lip-AmB应用于BALB / c小鼠的皮肤,持续4周,以治疗由大肠利兹氏菌引起的病变。结果显示Lip-AmB 0.4%优于Lip-AmB 0.2和0.1%。在用0.4%Lip-AmB处理的小鼠中,感染后第8周和第12周,寄生虫已从感染和脾脏的皮肤部位完全清除。结果表明,局部Lip-AmB 0.4%可能是治疗CL的有用工具,值得进一步研究。结果显示Lip-AmB 0.4%优于Lip-AmB 0.2和0.1%。在用0.4%Lip-AmB处理的小鼠中,感染后第8周和第12周,寄生虫已从感染和脾脏的皮肤部位完全清除。结果表明,局部Lip-AmB 0.4%可能是治疗CL的有用工具,值得进一步研究。结果显示Lip-AmB 0.4%优于Lip-AmB 0.2和0.1%。在用0.4%Lip-AmB处理的小鼠中,感染后第8周和第12周,寄生虫已从感染和脾脏的皮肤部位完全清除。结果表明,局部Lip-AmB 0.4%可能是治疗CL的有用工具,值得进一步研究。
更新日期:2019-11-01
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