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Formulation and comparative evaluation of HPMC and water soluble chitosan-based sparfloxacin nanosuspension for ophthalmic delivery

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Abstract

Ophthalmic nanosuspensions (ONS) have shown a potential for ophthalmic delivery over the conventional ocular formulations. The objective of the study was to assess the effect of surfactants and polymers on particle size and drug release. Sparfloxacin ONS were prepared by optimizing the concentration of HPMC E5 and water soluble chitosan by using solvent diffusion method followed by probe sonication. The Poloxamer 407 and Kolliphor P188 were used as a surfactant. The produced nanosuspensions were characterized for particle size, shape, zeta potential and drug release. The average particle size of the nanosuspension was 300 to 500 nm. The in vitro drug release study showed that the optimized nanosuspension of water soluble chitosan sustained drug release up to 9 h compared to 6 h for the hydroxypropylmethylcellulose (HPMC) nanosuspension. Further, the sparfloxacin ONS formulation showed excellent ocular tolerance and biocompatibility as determined by hen’s egg test chorioallantoic membrane (HET CAM) and resazurin assay on Vero cell lines. Moreover, optimized formulation was found to be stable, isotonic, non-toxic with higher in vitro and in vivo antimicrobial potential.

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Authors and Affiliations

  1. KLE University’s College of Pharmacy, Nehru Nagar, Belagavi, Karnataka, 590010, India

    Nitin Prabhakar Ambhore, Panchaxari Mallapa Dandagi & Anand Panchakshari Gadad

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  1. Nitin Prabhakar Ambhore
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  2. Panchaxari Mallapa Dandagi
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  3. Anand Panchakshari Gadad
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Correspondence to Nitin Prabhakar Ambhore.

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Statement of human and animal rights

All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000 (5). Informed consent was obtained from all patients for being included in the study. All institutional and national guidelines for the care and use of laboratory animals were followed.

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The authors declare that they have no competing interests.

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Ambhore, N.P., Dandagi, P.M. & Gadad, A.P. Formulation and comparative evaluation of HPMC and water soluble chitosan-based sparfloxacin nanosuspension for ophthalmic delivery. Drug Deliv. and Transl. Res. 6, 48–56 (2016). https://doi.org/10.1007/s13346-015-0262-y

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