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Al-Mahallawi AM, Abdelbary AA, El-Zahaby SA. Norfloxacin loaded nano-cubosomes for enhanced management of otitis externa: In vitro and in vivo evaluation. Int J Pharm 2021; 600:120490. [PMID: 33744451 DOI: 10.1016/j.ijpharm.2021.120490] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 02/21/2021] [Accepted: 03/10/2021] [Indexed: 02/07/2023]
Abstract
The research's goal is to design and formulate nano-structured cubosomes loaded with norfloxacin (NFX)formanagement of otitis externa. In this study, glyceryl monooleate (GMO) as lipid phase, Cremophor EL as surfactant and either Pluronic F108 or Pluronic F127 as stabilizer were the used ingredients. The nano-cubosomal formulation "CUB 1" (its dispersed phase is composed of GMO (95%), Cremophor EL (2.5%) and Pluronic F108 (2.5%)) was the best achieved one. It had small particles size (216.75 ± 2.47 nm), good polydispersity index (0.339 ± 0.012) and acceptable zeta potential (-41.2 ± 2.262 mV). Images obtained after transmission electron microscopy examination ensured nearly cubic shape of formed nanoparticles with excellent dispersibility. Moreover, micrographs of rabbit ear skin specimens examined by confocal laser microscopy ensured good permeation capability of nano-structured cubosomes.In addition, in vivoskin deposition results revealed that higher amount of NFX was deposited in the rabbit ear skin throughout the study period (10 h) compared to drug suspension. Additionally, histopathological results proved that NFX loaded cubosomes can be safely applied topically on ear skin without any signs of inflammation nor skin irritation. Accordingly, these results anticipated the nano-structured cubosomal capabilities as a favorable nano-carrier for dermal NFX delivery to external ear skin for enhancing the management of otitis externa.
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Affiliation(s)
- Abdulaziz M Al-Mahallawi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt; Department of Pharmaceutics, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, Egypt
| | - Aly A Abdelbary
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt; School of Life and Medical Sciences, University of Hertfordshire Hosted by Global Academic Foundation, Cairo, Egypt
| | - Sally A El-Zahaby
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Pharos University in Alexandria, Alexandria, Egypt.
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Murgia S, Falchi AM, Meli V, Schillén K, Lippolis V, Monduzzi M, Rosa A, Schmidt J, Talmon Y, Bizzarri R, Caltagirone C. Cubosome formulations stabilized by a dansyl-conjugated block copolymer for possible nanomedicine applications. Colloids Surf B Biointerfaces 2015; 129:87-94. [PMID: 25829131 DOI: 10.1016/j.colsurfb.2015.03.025] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 01/23/2015] [Accepted: 03/09/2015] [Indexed: 12/31/2022]
Abstract
We present here an innovative, fluorescent, monoolein-based cubosome dispersion. Rather than embedded within the monoolein palisade, the fluorescent imaging agent, namely dansyl, was conjugated to the terminal ethylene oxide moieties of the block copolymer Pluronic F108. We discuss the physicochemical and photophysical properties of this fluorescent Pluronic and of a cubosome formulation stabilized by a mixture of dansyl-conjugated and non-conjugated Pluronic, also including an anticancer drug (quercetin). Furthermore, we performed biocompatibility tests against HeLa cells to assess internalization and cytotoxicity features of this nanoparticles aqueous dispersion. Cryo-TEM, SAXS, and DLS analysis, proved the bicontinuous cubic inner nanostructure and the morphology of this fluorescent cubosome dispersion, while photophysical measurements and biocompatibility results basically validate their potential use for theranostic nanomedicine applications.
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Affiliation(s)
- Sergio Murgia
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Angela Maria Falchi
- Dipartimento di Scienze Biomediche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA) , Italy.
| | - Valeria Meli
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Maura Monduzzi
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Antonella Rosa
- Dipartimento di Scienze Biomediche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA) , Italy.
| | - Judith Schmidt
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.
| | - Yeshayahu Talmon
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.
| | - Ranieri Bizzarri
- Istituto di Biofisica, CNR, U.O. Pisa, Via G Moruzzi 1, 56124 Pisa, Italy.
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
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