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Iranian Journal of Pharmaceutical Research
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Al-Qushawi, A., Rassouli, A., Atyabi, F., Peighambari, S., Esfandyari-Manesh, M., Shams, G., Yazdani, A. (2016). Preparation and Characterization of Three Tilmicosin-loaded Lipid Nanoparticles: Physicochemical Properties and in-vitro Antibacterial Activities. Iranian Journal of Pharmaceutical Research, 15(4), 663-676. doi: 10.22037/ijpr.2016.1927
Alwan Al-Qushawi; Ali Rassouli; Fatemeh Atyabi; Seyed Mostafa Peighambari; Mehdi Esfandyari-Manesh; Gholamreza Shams; Azam Yazdani. "Preparation and Characterization of Three Tilmicosin-loaded Lipid Nanoparticles: Physicochemical Properties and in-vitro Antibacterial Activities". Iranian Journal of Pharmaceutical Research, 15, 4, 2016, 663-676. doi: 10.22037/ijpr.2016.1927
Al-Qushawi, A., Rassouli, A., Atyabi, F., Peighambari, S., Esfandyari-Manesh, M., Shams, G., Yazdani, A. (2016). 'Preparation and Characterization of Three Tilmicosin-loaded Lipid Nanoparticles: Physicochemical Properties and in-vitro Antibacterial Activities', Iranian Journal of Pharmaceutical Research, 15(4), pp. 663-676. doi: 10.22037/ijpr.2016.1927
Al-Qushawi, A., Rassouli, A., Atyabi, F., Peighambari, S., Esfandyari-Manesh, M., Shams, G., Yazdani, A. Preparation and Characterization of Three Tilmicosin-loaded Lipid Nanoparticles: Physicochemical Properties and in-vitro Antibacterial Activities. Iranian Journal of Pharmaceutical Research, 2016; 15(4): 663-676. doi: 10.22037/ijpr.2016.1927

Preparation and Characterization of Three Tilmicosin-loaded Lipid Nanoparticles: Physicochemical Properties and in-vitro Antibacterial Activities

Article 5, Volume 15, Issue 4, Autumn 2016, Page 663-676  XML PDF (998.48 K)
Document Type: Research article
DOI: 10.22037/ijpr.2016.1927
Authors
Alwan Al-Qushawi1; Ali Rassouli1; Fatemeh Atyabi email 2; Seyed Mostafa Peighambari3; Mehdi Esfandyari-Manesh4; Gholamreza Shams5; Azam Yazdani3
1Dept. Pharmacology, Faculty of Vet Med, University of Tehran
2Dept. Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences,
3Dept. Avian Pathology, Faculty of Veterinary Medicine, University of Tehran
4Nanotechnology Research Center, Tehran University of Medical Sciences
5Dept. Pharmacology, Faculty of Veterinary Medicine, University of Tehran
Abstract
Tilmicosin (TLM) is an important antibiotic in veterinary medicine with low bioavailability and safety. This study aimed to formulate and evaluate physicochemical properties, storage stability after lyophilization and antibacterial activity of three TLM-loaded lipid nanoparticles (TLM-LNPs) including solid lipid nanoparticles (SLNs), nanostructured lipid carriers (NLCs) and lipid-core nanocapsules (LNCs). Physicochemical parameters such as particle size-mean diameter, polydispersity index, zeta potential, drug encapsulation efficiency (EE), loading capacity, and morphology of the formulations were evaluated and the effects of various cryoprotectants during lyophilization and storage for 8 weeks were also studied. The profiles of TLM release and the antibacterial activities of these TLM-LNPs suspensions (against Escherichia coli and Staphylococcus aureus) were tested in comparison with their corresponding powders. TLM-LNPs suspensions were in nano-scale range with mean diameters of 186.3±1.5, 149.6±3.0 and 85.0±1.0nm, and EE, 69.1, 86.3 and 94.3% for TLM- SLNs, TLM-NLCs and TLM- LNCs, respectively. TLM-LNCs gave the best results with significantly low particle size and high EE (p<0.05). Mannitol was the most effective cryoprotectant for lyophilization and storage of TLM-LNPs. The drug release profiles were biphasic and the release times were longer at pH 7.4 where TLM-NLCs and TLM-LNCs powders showed longer release times. In microbiological tests, S. aureus was about 4 times more sensitive than E. coli to TLM-LNPs with minimum inhibitory concentration ranges of 0.5-1.0 and 2-4 µg/ml, respectively, and TLM-LNCs exhibited the best antibacterial activities. In conclusion, TLM-LNP formulations especially TLM-LNCs and TLM-NLCs are promising carriers for TLM with better drug encapsulation capacity, and release behavior.
Keywords
Tilmicosin; lipid nanoparticles; Stability; Mannitol; Antibacterial activity
Main Subjects
Pharmacutics
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