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Pandey M, Choudhury H, binti Abd Aziz A, Bhattamisra SK, Gorain B, Su JST, Tan CL, Chin WY, Yip KY. Potential of Stimuli-Responsive In Situ Gel System for Sustained Ocular Drug Delivery: Recent Progress and Contemporary Research. Polymers (Basel) 2021; 13:1340. [PMID: 33923900 PMCID: PMC8074213 DOI: 10.3390/polym13081340] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/15/2021] [Accepted: 03/20/2021] [Indexed: 12/19/2022] Open
Abstract
Eyesight is one of the most well-deserved blessings, amid all the five senses in the human body. It captures the raw signals from the outside world to create detailed visual images, granting the ability to witness and gain knowledge about the world. Eyes are exposed directly to the external environment; they are susceptible to the vicissitudes of diseases. The World Health Organization has predicted that the number of individuals affected by eye diseases will rise enormously in the next decades. However, the physical barriers of the eyes and the problems associated with conventional ocular formulations are significant challenges in ophthalmic drug development. This has generated the demand for a sustained ocular drug delivery system, which serves to deliver effective drug concentration at a reduced frequency for consistent therapeutic effect and better patient treatment adherence. Recent advancement in pharmaceutical dosage design has demonstrated that a stimuli-responsive in situ gel system exhibits the favorable characteristics for providing sustained ocular drug delivery and enhanced ocular bioavailability. Stimuli-responsive in situ gels undergo a phase transition (solution-gelation) in response to the ocular environmental temperature, pH, and ions. These stimuli transform the formulation into a gel at the cul de sac to overcome the shortcomings of conventional eye drops, such as rapid nasolacrimal drainage and short contact time with the ocular surface This review highlights the recent successful research outcomes of stimuli-responsive in situ gelling systems in treating in vivo models with glaucoma and various ocular infections. Additionally, it also presents the mechanism, recent development, and safety considerations of stimuli-sensitive in situ gel as the potential sustained ocular delivery system for treating common eye disorders.
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Affiliation(s)
- Manisha Pandey
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia
- Centre for Bioactive Molecules and Drug Delivery, Institute for Research, Development and Innovation, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Hira Choudhury
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia
- Centre for Bioactive Molecules and Drug Delivery, Institute for Research, Development and Innovation, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Azila binti Abd Aziz
- Department of Chemical and Environmental Engineering, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia;
| | - Subrat Kumar Bhattamisra
- Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia;
| | - Bapi Gorain
- School of Pharmacy, Faculty of Health and Medical Sciences, Taylor’s University, Subang Jaya 47500, Selangor, Malaysia;
- Center for Drug Delivery and Molecular Pharmacology, Faculty of Health and Medical Sciences, Taylor’s University, Subang Jaya 47500, Selangor, Malaysia
| | - Jocelyn Sziou Ting Su
- Undergraduate, School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia; (J.S.T.S.); (C.L.T.); (W.Y.C.); (K.Y.Y.)
| | - Choo Leey Tan
- Undergraduate, School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia; (J.S.T.S.); (C.L.T.); (W.Y.C.); (K.Y.Y.)
| | - Woon Yee Chin
- Undergraduate, School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia; (J.S.T.S.); (C.L.T.); (W.Y.C.); (K.Y.Y.)
| | - Khar Yee Yip
- Undergraduate, School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia; (J.S.T.S.); (C.L.T.); (W.Y.C.); (K.Y.Y.)
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Zhou J, Krishnan N, Jiang Y, Fang RH, Zhang L. Nanotechnology for virus treatment. NANO TODAY 2021; 36:101031. [PMID: 33519948 PMCID: PMC7836394 DOI: 10.1016/j.nantod.2020.101031] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 04/14/2023]
Abstract
The continued emergence of novel viruses poses a significant threat to global health. Uncontrolled outbreaks can result in pandemics that have the potential to overburden our healthcare and economic systems. While vaccination is a conventional modality that can be employed to promote herd immunity, antiviral vaccines can only be applied prophylactically and do little to help patients who have already contracted viral infections. During the early stages of a disease outbreak when vaccines are unavailable, therapeutic antiviral drugs can be used as a stopgap solution. However, these treatments do not always work against emerging viral strains and can be accompanied by adverse effects that sometimes outweigh the benefits. Nanotechnology has the potential to overcome many of the challenges facing current antiviral therapies. For example, nanodelivery vehicles can be employed to drastically improve the pharmacokinetic profile of antiviral drugs while reducing their systemic toxicity. Other unique nanomaterials can be leveraged for their virucidal or virus-neutralizing properties. In this review, we discuss recent developments in antiviral nanotherapeutics and provide a perspective on the application of nanotechnology to the SARS-CoV-2 outbreak and future virus pandemics.
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Affiliation(s)
- Jiarong Zhou
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA, 92093, USA
| | - Nishta Krishnan
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA, 92093, USA
| | - Yao Jiang
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA, 92093, USA
| | - Ronnie H Fang
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA, 92093, USA
| | - Liangfang Zhang
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA, 92093, USA
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Advancement on Sustained Antiviral Ocular Drug Delivery for Herpes Simplex Virus Keratitis: Recent Update on Potential Investigation. Pharmaceutics 2020; 13:pharmaceutics13010001. [PMID: 33374925 PMCID: PMC7821943 DOI: 10.3390/pharmaceutics13010001] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/11/2020] [Accepted: 12/15/2020] [Indexed: 12/19/2022] Open
Abstract
The eyes are the window to the world and the key to communication, but they are vulnerable to multitudes of ailments. More serious than is thought, corneal infection by herpes simplex viruses (HSVs) is a prevalent yet silent cause of blindness in both the paediatric and adult population, especially if immunodeficient. Globally, there are 1.5 million new cases and forty thousand visual impairment cases reported yearly. The Herpetic Eye Disease Study recommends topical antiviral as the front-line therapy for HSV keratitis. Ironically, topical eye solutions undergo rapid nasolacrimal clearance, which necessitates oral drugs but there is a catch of systemic toxicity. The hurdle of antiviral penetration to reach an effective concentration is further complicated by drugs’ poor permeability and complex layers of ocular barriers. In this current review, novel delivery approaches for ocular herpetic infection, including nanocarriers, prodrugs, and peptides are widely investigated, with special focus on advantages, challenges, and recent updates on in situ gelling systems of ocular HSV infections. In general congruence, the novel drug delivery systems play a vital role in prolonging the ocular drug residence time to achieve controlled release of therapeutic agents at the application site, thus allowing superior ocular bioavailability yet fewer systemic side effects. Moreover, in situ gel functions synergistically with nanocarriers, prodrugs, and peptides. The findings support that novel drug delivery systems have potential in ophthalmic drug delivery of antiviral agents, and improve patient convenience when prolonged and chronic topical ocular deliveries are intended.
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Muhtadi WK, Novitasari L, Danarti R, Martien R. Development of polymeric nanoparticle gel prepared with the combination of ionic pre-gelation and polyelectrolyte complexation as a novel drug delivery of timolol maleate. Drug Dev Ind Pharm 2020; 46:1844-1852. [PMID: 32901561 DOI: 10.1080/03639045.2020.1821053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE The purpose of this study was to overcome the undesired systemic absorption of skin topical administration of timolol maleate (TM) by developing the TM nanoparticle gel. METHODS TM-loaded nanoparticle (TMNP) was prepared by ionic pre-gelation of pectin (PCN) and calcium ions (CI) followed with polyelectrolyte complex using chitosan (CHI). TMNP was characterized by measuring the particle size, polydispersity index, zeta potential, encapsulation efficiency (EE), and the interaction between formula constituents. TM-loaded nanoparticle gel (TMNG) was prepared by using hydroxypropyl methylcellulose (HPMC) and was characterized by measuring the spreadability, pH, viscosity, and drug content. The drug release kinetics were analyzed using DDSolver add-in program. RESULTS TMNP possessed particle size of 175.2 ± 19.7 nm, polydispersity index of 0.528 ± 0.113, zeta potential of -10.86 ± 0.87 mV, and EE of 27.45 ± 2.34%. The electrostatic interactions between PCN, CI, and CHI that formed the nanoparticles were confirmed by the result of vibrational spectroscopy analysis. TMNG possessed spreadability of 60.80 ± 1.38 cm2, pH of 5.154 ± 0.004, viscosity of 269.07 ± 5.83 cP, and drug content of 107.38 ± 1.77%. TM showed a sustained release manner within 24 h by following Korsmeyer-Peppas kinetical model with non-Fickian release mechanism. CONCLUSION The prepared nanoparticle gel can be an effective controlled release system of TM that administered topically on the skin surface.
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Affiliation(s)
- Wildan Khairi Muhtadi
- Department of Pharmaceutics, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia.,Sekolah Tinggi Ilmu Farmasi (STIFAR) Riau, JalanKamboja, Tampan, Pekanbaru, Indonesia
| | - Laras Novitasari
- Department of Pharmaceutics, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Retno Danarti
- Department of Dermatology and Venereology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Farmako Sekip Utara, Yogyakarta, Indonesia
| | - Ronny Martien
- Department of Pharmaceutics, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia
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Morais AIS, Wang X, Vieira EG, Viana BC, Silva-Filho EC, Osajima JA, Afewerki S, Corat MAF, Silva HS, Marciano FR, Ruiz-Esparza GU, Stocco TD, de Paula MMM, Lobo AO. Electrospraying Oxygen-Generating Microparticles for Tissue Engineering Applications. Int J Nanomedicine 2020; 15:1173-1186. [PMID: 32110015 PMCID: PMC7037066 DOI: 10.2147/ijn.s237334] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 01/14/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The facile preparation of oxygen-generating microparticles (M) consisting of Polycaprolactone (PCL), Pluronic F-127, and calcium peroxide (CPO) (PCL-F-CPO-M) fabricated through an electrospraying process is disclosed. The biological study confirmed the positive impact from the oxygen-generating microparticles on the cell growth with high viability. The presented technology could work as a prominent tool for various tissue engineering and biomedical applications. METHODS The oxygen-generated microparticles fabricated through electrospraying processes were thoroughly characterization through various methods such as X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) analysis, and scanning electron microscopy (SEM)/SEM-Energy Dispersive Spectroscopy (EDS) analysis. RESULTS The analyses confirmed the presence of the various components and the porous structure of the microparticles. Spherical shape with spongy characteristic microparticles were obtained with negative charge surface (ζ = -16.9) and a size of 17.00 ± 0.34 μm. Furthermore, the biological study performed on rat chondrocytes demonstrated good cell viability and the positive impact of increasing the amount of CPO in the PCL-F-CPO-M. CONCLUSION This technological platform could work as an important tool for tissue engineering due to the ability of the microparticles to release oxygen in a sustained manner for up to 7 days with high cell viability.
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Affiliation(s)
- Alan IS Morais
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science and Engineering Graduate Program, UFPI-Federal University of Piauí, Teresina, PICEP 64049-550, Brazil
| | - Xichi Wang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430022, People’s Republic of China
- Division of Engineering in Medicine, Department of Medicine, Harvard Medical School, Brigham & Women´s Hospital, Cambridge, MA02139, USA
- Harvard-MIT Division of Health Science and Technology, Massachusetts Institute of Technology, MIT, Cambridge, MA02139, USA
| | - Ewerton G Vieira
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science and Engineering Graduate Program, UFPI-Federal University of Piauí, Teresina, PICEP 64049-550, Brazil
| | - Bartolomeu C Viana
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science and Engineering Graduate Program, UFPI-Federal University of Piauí, Teresina, PICEP 64049-550, Brazil
- Department of Physics, UFPI-Federal University of Piauí, Teresina, PICEP 64049-550, Brazil
| | - Edson C Silva-Filho
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science and Engineering Graduate Program, UFPI-Federal University of Piauí, Teresina, PICEP 64049-550, Brazil
| | - Josy A Osajima
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science and Engineering Graduate Program, UFPI-Federal University of Piauí, Teresina, PICEP 64049-550, Brazil
| | - Samson Afewerki
- Division of Engineering in Medicine, Department of Medicine, Harvard Medical School, Brigham & Women´s Hospital, Cambridge, MA02139, USA
- Harvard-MIT Division of Health Science and Technology, Massachusetts Institute of Technology, MIT, Cambridge, MA02139, USA
| | - Marcus AF Corat
- Multidisciplinary Center for Biological Research, University of Campinas (UNICAMP), Campinas13083-877, Brazil
| | - Heurison S Silva
- Department of Physics, UFPI-Federal University of Piauí, Teresina, PICEP 64049-550, Brazil
| | - Fernanda R Marciano
- Department of Physics, UFPI-Federal University of Piauí, Teresina, PICEP 64049-550, Brazil
| | - Guillermo U Ruiz-Esparza
- Division of Engineering in Medicine, Department of Medicine, Harvard Medical School, Brigham & Women´s Hospital, Cambridge, MA02139, USA
- Harvard-MIT Division of Health Science and Technology, Massachusetts Institute of Technology, MIT, Cambridge, MA02139, USA
| | - Thiago D Stocco
- Multidisciplinary Center for Biological Research, University of Campinas (UNICAMP), Campinas13083-877, Brazil
- Faculty of Physiotherapy, Santo Amaro University, São Paulo04829-300, Brazil
| | - Mirian MM de Paula
- Multidisciplinary Center for Biological Research, University of Campinas (UNICAMP), Campinas13083-877, Brazil
| | - Anderson O Lobo
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science and Engineering Graduate Program, UFPI-Federal University of Piauí, Teresina, PICEP 64049-550, Brazil
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Chen H, Wang JH, Liu CD, Wang Y, Fu YN, Wang D, Sun H, Peng Y, Jiang M, Pu DJ. The effect of amphiphilic N,N,N-trimethyl-O-octadecyl chitosan on the oral bioavailability of acyclovir. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.02.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Yang X, Shah SJ, Wang Z, Agrahari V, Pal D, Mitra AK. Nanoparticle-based topical ophthalmic formulation for sustained release of stereoisomeric dipeptide prodrugs of ganciclovir. Drug Deliv 2015; 23:2399-2409. [PMID: 25564964 DOI: 10.3109/10717544.2014.996833] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Poly(d,l-lactic-co-glycolic acid) (PLGA) nanoparticles (NP) of Val-Val dipeptide monoester prodrugs of ganciclovir (GCV) including L-Val-L-Val-GCV (LLGCV), L-Val-D-Val-GCV (LDGCV) and D-Val-L-Val-GCV (DLGCV) were formulated and dispersed in thermosensitive PLGA-PEG-PLGA polymer gel for the treatment of herpes simplex virus type 1 (HSV-1)-induced viral corneal keratitis. Nanoparticles containing prodrugs of GCV were prepared by a double-emulsion solvent evaporation technique using various PLGA polymers with different drug/polymer ratios. Nanoparticles were characterized with respect to particle size, entrapment efficiency, polydispersity, drug loading, surface morphology, zeta potential and crystallinity. Prodrugs-loaded NP were incorporated into in situ gelling system. These formulations were examined for in vitro release and cytotoxicity. The results of optimized entrapment efficiencies of LLGCV-, LDGCV- and DLGCV-loaded NP are of 38.7 ± 2.0%, 41.8 ± 1.9%, and 45.3 ± 2.2%; drug loadings 3.87 ± 0.20%, 2.79 ± 0.13% and 3.02 ± 0.15%; yield 85.2 ± 3.0%, 86.9 ± 4.6% and 76.9 ± 2.1%; particle sizes 116.6 ± 4.5, 143.0 ± 3.8 and 134.1 ± 5.2 nm; and zeta potential -15.0 ± 4.96, -13.8 ± 5.26 and -13.9 ± 5.14 mV, respectively. Cytotoxicity studies suggested that all the formulations are non-toxic. In vitro release of prodrugs from NP showed a biphasic release pattern with an initial burst phase followed by a sustained phase. Such burst effect was completely eliminated when NP were suspended in thermosensitive gels with near zero-order release kinetics. Prodrugs-loaded PLGA NP dispersed in thermosensitive gels can thus serve as a promising drug delivery system for the treatment of anterior eye diseases.
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Affiliation(s)
- Xiaoyan Yang
- a Division of Pharmaceutical Sciences, School of Pharmacy , University of Missouri - Kansas City , Kansas City , MO , USA
| | - Sujay J Shah
- a Division of Pharmaceutical Sciences, School of Pharmacy , University of Missouri - Kansas City , Kansas City , MO , USA
| | - Zhiying Wang
- a Division of Pharmaceutical Sciences, School of Pharmacy , University of Missouri - Kansas City , Kansas City , MO , USA
| | - Vibhuti Agrahari
- a Division of Pharmaceutical Sciences, School of Pharmacy , University of Missouri - Kansas City , Kansas City , MO , USA
| | - Dhananjay Pal
- a Division of Pharmaceutical Sciences, School of Pharmacy , University of Missouri - Kansas City , Kansas City , MO , USA
| | - Ashim K Mitra
- a Division of Pharmaceutical Sciences, School of Pharmacy , University of Missouri - Kansas City , Kansas City , MO , USA
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Ramyadevi D, Rajan KS. Synthesis of hybrid polymer blend nanoparticles and incorporation into in situ gel foam spray for controlled release therapy using a versatile synthetic purine nucleoside analogue antiviral drug. RSC Adv 2015. [DOI: 10.1039/c4ra16537c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Antiviral drug loaded nanoparticles is incorporated intoin situgel for controlled release therapy. Chemical and physical interactions of drug and polymers in the system influenced their characteristics and drug release mechanism.
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Affiliation(s)
- Durai Ramyadevi
- School of Chemical and Biotechnology (SCBT)
- SASTRA University
- Thanjavur – 613401
- India
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