Ahmadi Negar, Rincón María, Silva-Abreu Marcelle, Sosa Lilian, Pesantez-Narvaez Jessica, Calpena Ana Cristina, Rodríguez-Lagunas María J, Mallandrich Mireia
Departament de Farmàcia, Tecnologia Farmacèutica, i Fisicoquímica, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain.
Departament de Ciència de Materials i Química Física, Facultat de Química, Universitat de Barcelona (UB), 08028 Barcelona, Spain.
Gels. 2023 May 29;9(6):448. doi: 10.3390/gels9060448.
Pranoprofen (PRA)-loaded nanostructured lipid carriers (NLC) have been dispersed into blank gels composed of 1% of Carbomer 940 (PRA-NLC-Car) and 3% of Sepigel 305 (PRA-NLC-Sep) as a novel strategy to refine the biopharmaceutical profile of PRA, for dermal administration in the treatment of skin inflammation that may be caused by possible skin abrasion. This stratagem intends to improve the joining of PRA with the skin, improving its retention and anti-inflammatory effect. Gels were evaluated for various parameters such as pH, morphology, rheology, and swelling. In vitro drug release research and ex vivo permeation through the skin were carried out on Franz diffusion cells. Additionally, in vivo assays were carried out to evaluate the anti-inflammatory effect, and tolerance studies were performed in humans by evaluating the biomechanical properties. Results showed a rheological profile common of semi-solid pharmaceutical forms for dermal application, with sustained release up to 24 h. In vivo studies using PRA-NLC-Car and PRA-NLC-Sep in mice and hairless rats histologically demonstrated their efficacy in an inflammatory animal model study. No signs of skin irritation or modifications of the skin's biophysical properties were identified and the gels were well tolerated. The results obtained from this investigation concluded that the developed semi-solid formulations represent a fitting drug delivery carrier for PRA's transdermal delivery, enhancing its dermal retention and suggesting that they can be utilized as an interesting and effective topical treatment for local skin inflammation caused by a possible abrasion.
负载普拉洛芬(PRA)的纳米结构脂质载体(NLC)已分散到由1%卡波姆940(PRA-NLC-Car)和3%Sepigel 305(PRA-NLC-Sep)组成的空白凝胶中,作为改善PRA生物药剂学特性的新策略,用于经皮给药治疗可能由皮肤擦伤引起的皮肤炎症。该策略旨在改善PRA与皮肤的结合,提高其滞留性和抗炎效果。对凝胶进行了pH值、形态、流变学和溶胀等各种参数的评估。在Franz扩散池上进行了体外药物释放研究和经皮离体渗透研究。此外,还进行了体内试验以评估抗炎效果,并通过评估生物力学性能在人体中进行了耐受性研究。结果显示出适合用于皮肤给药的半固体制剂的流变学特征,药物可持续释放长达24小时。在小鼠和无毛大鼠中使用PRA-NLC-Car和PRA-NLC-Sep进行的体内研究在组织学上证明了它们在炎症动物模型研究中的疗效。未发现皮肤刺激迹象或皮肤生物物理性质的改变,且凝胶耐受性良好。该研究所得结果表明,所开发的半固体制剂是PRA经皮给药的合适药物递送载体,可增强其在皮肤中的滞留性,并表明它们可用作治疗可能由擦伤引起的局部皮肤炎症的有趣且有效的局部治疗方法。