Samia M Omar1,2, Nabila A Maziad3, Nourhan M El-Tantawy4. 1. Department of pharmaceutics, Faculty of Pharmacy, Helwan University, Cairo, Egypt. omarsamia3@hotmail.com. 2. Department of Pharmaceutics, Faculty of Pharmacy, Princess Nora Bint Abdul Rahman University, Riyadh, Saudi Arabia. omarsamia3@hotmail.com. 3. Department of Polymer Chemistry, National Center for Radiation Research and Technology, Atomic Energy Authority, Nasr City, Cairo, Egypt. 4. Department of pharmaceutics, Faculty of Pharmacy, Helwan University, Cairo, Egypt.
Abstract
PURPOSE: Preparation of Isoniazid (INH) loaded nanogel particles using gamma radiation as safe, simple, cheap and reproducible technique for promoting mycobacterial killing in a lower-dose system aiming in developing of drug resistance. METHODS: Polymeric pH-sensitive nanogels were prepared by gamma radiation-induced polymerization of Acrylic acid (AAc) or Itaconic acid (IA), in aqueous solution of polyvinylpyrrolidone (PVP), as template polymer. The prepared nanogels were utilized for encapsulation of INH. 31X22 factorial design was employed for optimization and exploring the effect of radiation dose (X1) (30-50kGy), ratio of PVP: acid (X2) (50:50-30:70) and type of acid (X3) on the prepared nanogel characterization RESULTS: The optimized levels of X1, X2 and X3 were (50 KGy, 30:70 and Itaconic acid, respectively), with a desirability of 0.959. In-vitro INH release rate from the prepared nanogels decreased with increasing gamma radiation doses, with the predominance of the diffusion mechanism for drug release pattern. In addition, it was perceived that the minimum inhibitory concentration (MIC) of INH loaded PVP/PIA nanogels on Mycobacteria Tuberculosis was 8 folds lower than that of INH solution. CONCLUSION: The prospective of PVP-K90/PIA was recommended as a smart candidate for delivery of INH with promising achievements against tuberculosis than free drug. Graphical abstract Mechanism of formation and loading of Isoniazid PVP/PIA nanogel.
PURPOSE: Preparation of Isoniazid (INH) loaded nanogel particles using gamma radiation as safe, simple, cheap and reproducible technique for promoting mycobacterial killing in a lower-dose system aiming in developing of drug resistance. METHODS: Polymeric pH-sensitive nanogels were prepared by gamma radiation-induced polymerization of Acrylic acid (AAc) or Itaconic acid (IA), in aqueous solution of polyvinylpyrrolidone (PVP), as template polymer. The prepared nanogels were utilized for encapsulation of INH. 31X22 factorial design was employed for optimization and exploring the effect of radiation dose (X1) (30-50kGy), ratio of PVP: acid (X2) (50:50-30:70) and type of acid (X3) on the prepared nanogel characterization RESULTS: The optimized levels of X1, X2 and X3 were (50 KGy, 30:70 and Itaconic acid, respectively), with a desirability of 0.959. In-vitro INH release rate from the prepared nanogels decreased with increasing gamma radiation doses, with the predominance of the diffusion mechanism for drug release pattern. In addition, it was perceived that the minimum inhibitory concentration (MIC) of INH loaded PVP/PIA nanogels on Mycobacteria Tuberculosis was 8 folds lower than that of INH solution. CONCLUSION: The prospective of PVP-K90/PIA was recommended as a smart candidate for delivery of INH with promising achievements against tuberculosis than free drug. Graphical abstract Mechanism of formation and loading of IsoniazidPVP/PIA nanogel.
Authors: S G Franzblau; R S Witzig; J C McLaughlin; P Torres; G Madico; A Hernandez; M T Degnan; M B Cook; V K Quenzer; R M Ferguson; R H Gilman Journal: J Clin Microbiol Date: 1998-02 Impact factor: 5.948
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