Preparation and Optimization of Meropenem-Loaded Solid Lipid Nanoparticles: In Vitro Evaluation and Molecular Modeling

被引:0
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作者
Ellen K. G. Mhango
Rahul S. Kalhapure
Mahantesh Jadhav
Sandeep J. Sonawane
Chunderika Mocktar
Suresh Vepuri
Mahmoud Soliman
Thirumala Govender
机构
[1] University of KwaZulu-Natal,Discipline of Pharmaceutical Sciences, School of Health Sciences
来源
AAPS PharmSciTech | 2017年 / 18卷
关键词
antibacterial; Box-Behnken design; meropenem; molecular modeling; solid lipid nanoparticles;
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学科分类号
摘要
Encapsulation of antibiotics into nanocarriers has the potential to overcome resistance and disadvantages associated with conventional dosage forms as well as increase half-life of an antibiotic. Encapsulation of meropenem (MRPN) into solid lipid nanoparticles (SLNs) remains unexplored among the limited work reported on nanoformulation incorporating MRPN. The study aimed to use an experimental design, to optimize MRPN-loaded SLNs, and to undertake in vitro and in silico evaluations. A Box-Behnken design (BBD) was used to optimize manufacturing conditions of glycerol monostearate (GMS) SLNs loaded with MRPN. The SLNs were prepared using hot homogenization and ultrasonication method. Optimized MRPN-SLNs showed particle size, zeta potential, and entrapment efficiency of 112.61 ± 0.66 nm, −20.43 ± 0.99 mV, and 89.94 ± 1.26%, respectively. The morphology of the SLNs revealed nearly spherical shaped particles. Differential scanning calorimetry and X-ray diffraction analysis showed that meropenem was present in amorphous form in the SLNs. Controlled in vitro MRPN release from SLNs was achieved and followed the Korsmeyer-Peppas model (R2 = 0.9679). Prolonged in vitro antibacterial activity against Escherichia coli was also observed. The molecular modeling showed that both hydrophobic interactions and hydrogen bonding led to a stable MRPN-GMS complex formation, which was confirmed by its low heat of formation (−5536.13 kcal/mol). This stable complex could have contributed to the controlled release of MRPN from the SLNs and subsequent sustained antibacterial activity.
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页码:2011 / 2025
页数:14
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