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Alami-Milani M, Zakeri-Milani P, Valizadeh H, Salehi R, Salatin S, Naderinia A, Jelvehgari M. Novel Pentablock Copolymers as Thermosensitive Self-Assembling Micelles for Ocular Drug Delivery. Adv Pharm Bull 2017; 7:11-20. [PMID: 28507933 PMCID: PMC5426723 DOI: 10.15171/apb.2017.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 01/18/2017] [Accepted: 01/25/2017] [Indexed: 01/24/2023] Open
Abstract
Many studies have focused on how drugs are formulated in the sol state at room temperature leading to the formation of in situ gel at eye temperature to provide a controlled drug release. Stimuli-responsive block copolymer hydrogels possess several advantages including uncomplicated drug formulation and ease of application, no organic solvent, protective environment for drugs, site-specificity, prolonged and localized drug delivery, lower systemic toxicity, and capability to deliver both hydrophobic and hydrophilic drugs. Self-assembling block copolymers (such as diblock, triblock, and pentablock copolymers) with large solubility variation between hydrophilic and hydrophobic segments are capable of making temperature-dependent micellar assembles, and with further increase in the temperature, of jellifying due to micellar aggregation. In general, molecular weight, hydrophobicity, and block arrangement have a significant effect on polymer crystallinity, micelle size, and in vitro drug release profile. The limitations of creature triblock copolymers as initial burst release can be largely avoided using micelles made of pentablock copolymers. Moreover, formulations based on pentablock copolymers can sustain drug release for a longer time. The present study aims to provide a concise overview of the initial and recent progresses in the design of hydrogel-based ocular drug delivery systems.
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Affiliation(s)
- Mitra Alami-Milani
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Tabriz University of Medical Science, Tabriz, Iran
| | - Parvin Zakeri-Milani
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hadi Valizadeh
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Roya Salehi
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Science, Tabriz, Iran
| | - Sara Salatin
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Science, Tabriz, Iran
| | - Ali Naderinia
- Department of Mechanical Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Mitra Jelvehgari
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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102
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Bisht R, Jaiswal JK, Rupenthal ID. Nanoparticle-loaded biodegradable light-responsive in situ forming injectable implants for effective peptide delivery to the posterior segment of the eye. Med Hypotheses 2017; 103:5-9. [PMID: 28571808 DOI: 10.1016/j.mehy.2017.03.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/30/2017] [Indexed: 10/19/2022]
Abstract
Diseases affecting the posterior segment the eye, such as age-related macular degeneration (AMD), are the leading cause of blindness worldwide. Conventional dosage forms, such as eye drops, have to surmount several elimination mechanisms and complex barriers to achieve therapeutic concentrations at the target site often resulting in low anterior segment bioavailability (ca. 2-5%) with generally none of the drug reaching posterior segment tissues. Thus, frequent intravitreal injections are currently required to treat retinal conditions which have been associated with poor patient compliance due to pain, risk of infection, hemorrhages, retinal detachment and high treatment related costs. To partially overcome these issues, ocular implants have been developed for some posterior segment indications; however, the majority require surgical implantation and removal at the end of the intended treatment period. The transparent nature of the cornea and lens render light-responsive systems an attractive strategy for the management of diseases affecting the back of the eye. Light-responsive in situ forming injectable implants (ISFIs) offer various benefits such as ease of application in a minimally invasive manner and more site specific control over drug release. Moreover, the biodegradable nature of such implants avoids the need for surgical removal after release of the payload. Incorporating drug-loaded polymeric nanoparticles (NPs) into these implants may reduce the high initial burst release from the polymeric matrix and further sustain drug release thus avoiding the need for frequent injections as well as minimizing associated side effects. However, light-responsive systems for ophthalmic application are still in their early stages of development with limited reports on their safety and effectiveness. We hypothesize that the innovative design and properties of NP-containing light-responsive ISFIs can serve as a platform for effective management of ocular diseases requiring long term treatment.
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Affiliation(s)
- Rohit Bisht
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand; Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Jagdish K Jaiswal
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand; Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Ilva D Rupenthal
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand; Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand.
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103
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Szigiato AA, Podbielski DW, Ahmed IIK. Sustained drug delivery for the management of glaucoma. EXPERT REVIEW OF OPHTHALMOLOGY 2017. [DOI: 10.1080/17469899.2017.1280393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | - Dominik W. Podbielski
- Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, ON, Canada
| | - Iqbal Ike K. Ahmed
- Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, ON, Canada
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104
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Agrahari V, Agrahari V, Mandal A, Pal D, Mitra AK. How are we improving the delivery to back of the eye? Advances and challenges of novel therapeutic approaches. Expert Opin Drug Deliv 2016; 14:1145-1162. [DOI: 10.1080/17425247.2017.1272569] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Vibhuti Agrahari
- School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Vivek Agrahari
- School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Abhirup Mandal
- School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Dhananjay Pal
- School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Ashim K. Mitra
- School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO, USA
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105
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Kang-Mieler JJ, Dosmar E, Liu W, Mieler WF. Extended ocular drug delivery systems for the anterior and posterior segments: biomaterial options and applications. Expert Opin Drug Deliv 2016; 14:611-620. [PMID: 27551742 DOI: 10.1080/17425247.2016.1227785] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
INTRODUCTION The development of new therapies for treating various eye conditions has led to a demand for extended release delivery systems, which would lessen the need for frequent application while still achieving therapeutic drug levels in the target tissues. Areas covered: Following an overview of the different ocular drug delivery modalities, this article surveys the biomaterials used to develop sustained release drug delivery systems. Microspheres, nanospheres, liposomes, hydrogels, and composite systems are discussed in terms of their primary materials. The advantages and disadvantages of each drug delivery system are discussed for various applications. Recommendations for modifications and strategies for improvements to these basic systems are also discussed. Expert opinion: An ideal sustained release drug delivery system should be able to encapsulate and deliver the necessary drug to the target tissues at a therapeutic level without any detriment to the drug. Drug encapsulation should be as high as possible to minimize loss and unless it is specifically desired, the initial burst of drug release should be kept to a minimum. By modifying various biomaterials, it is possible to achieve sustained drug delivery to both the anterior and posterior segments of the eye.
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Affiliation(s)
- Jennifer J Kang-Mieler
- a Department of Biomedical Engineering , Illinois Institute of Technology , Chicago , IL , USA
| | - Emily Dosmar
- a Department of Biomedical Engineering , Illinois Institute of Technology , Chicago , IL , USA
| | - Wenqiang Liu
- a Department of Biomedical Engineering , Illinois Institute of Technology , Chicago , IL , USA
| | - William F Mieler
- b Department of Ophthalmology and Visual Sciences , University of Illinois at Chicago , Chicago , IL , USA
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106
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Huang W, Zhang N, Hua H, Liu T, Tang Y, Fu L, Yang Y, Ma X, Zhao Y. Preparation, pharmacokinetics and pharmacodynamics of ophthalmic thermosensitive in situ hydrogel of betaxolol hydrochloride. Biomed Pharmacother 2016; 83:107-113. [PMID: 27470557 DOI: 10.1016/j.biopha.2016.06.024] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/02/2016] [Accepted: 06/13/2016] [Indexed: 01/05/2023] Open
Abstract
Conventional ophthalmic formulations often eliminate rapidly after administration and cannot provide and maintain an adequate concentration of the drug in the precorneal area. To solve those problems, a thermosensitive in situ gelling and mucoadhesive ophthalmic drug delivery system was prepared and evaluated, the system was composed of poloxamer analogs and polycarbophil (PCP) and betaxolol hydrochloride (BH) was selected as model drug. The concentrations of poloxamer 407 (P407) (22% (w/v)) and poloxamer 188 (P188) (3.5% (w/v)) were identified through central composite design-response surface methodology (CCD-RSM). The BH in situ hydrogel (BH-HG) was liquid solution at low temperature and turned to semisolid at eye temperature. BH-HG showed good stability and biocompatibility, which fulfilled the requirements of ocular application. In vitro studies indicated that addition of PCP enhanced the viscosity of BH-HG and the release results of BH from BH-HG demonstrated a sustained release behavior of BH because of the gel dissolution. In vivo pharmacokinetics and pharmacodynamics studies indicated that the BH-HG formulation resulted in an improved bioavailability and a significantly lower intraocular pressure (IOP). The results suggested BH-HG could be potentially used as an in situ gelling system for ophthalmic delivery to enhance the bioavailability and efficacy.
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Affiliation(s)
- Weiwei Huang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, HeNan 45001, PR China
| | - Nan Zhang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, HeNan 45001, PR China
| | - Haiying Hua
- Academy of Medical and Pharmaceutical Sciences of Zhengzhou University, Zhengzhou, HeNan 450052, PR China
| | - Tuanbing Liu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, HeNan 45001, PR China
| | - Yafang Tang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, HeNan 45001, PR China
| | - Lingling Fu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, HeNan 45001, PR China
| | - Yanan Yang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, HeNan 45001, PR China
| | - Xiujie Ma
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, HeNan 45001, PR China
| | - Yongxing Zhao
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, HeNan 45001, PR China.
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107
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Thermosensitive chitosan-based hydrogel as a topical ocular drug delivery system of latanoprost for glaucoma treatment. Carbohydr Polym 2016; 144:390-9. [DOI: 10.1016/j.carbpol.2016.02.080] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 02/25/2016] [Accepted: 02/29/2016] [Indexed: 12/11/2022]
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108
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Barar J, Aghanejad A, Fathi M, Omidi Y. Advanced drug delivery and targeting technologies for the ocular diseases. BIOIMPACTS : BI 2016; 6:49-67. [PMID: 27340624 PMCID: PMC4916551 DOI: 10.15171/bi.2016.07] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Revised: 02/13/2016] [Accepted: 03/18/2016] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Ocular targeted therapy has enormously been advanced by implementation of new methods of drug delivery and targeting using implantable drug delivery systems (DDSs) or devices (DDDs), stimuli-responsive advanced biomaterials, multimodal nanomedicines, cell therapy modalities and medical bioMEMs. These technologies tackle several ocular diseases such as inflammation-based diseases (e.g., scleritis, keratitis, uveitis, iritis, conjunctivitis, chorioretinitis, choroiditis, retinitis, retinochoroiditis), ocular hypertension and neuropathy, age-related macular degeneration and mucopolysaccharidosis (MPS) due to accumulation of glycosaminoglycans (GAGs). Such therapies appear to provide ultimate treatments, even though much more effective, yet biocompatible, noninvasive therapies are needed to control some disabling ocular diseases/disorders. METHODS In the current study, we have reviewed and discussed recent advancements on ocular targeted therapies. RESULTS On the ground that the pharmacokinetic and pharmacodynamic analyses of ophthalmic drugs need special techniques, most of ocular DDSs/devices developments have been designed to localized therapy within the eye. Application of advanced DDSs such as Subconjunctival insert/implants (e.g., latanoprost implant, Gamunex-C), episcleral implant (e.g., LX201), cationic emulsions (e.g., Cationorm™, Vekacia™, Cyclokat™), intac/punctal plug DDSs (latanoprost punctal plug delivery system, L-PPDS), and intravitreal implants (I-vitaion™, NT-501, NT- 503, MicroPump, Thethadur, IB-20089 Verisome™, Cortiject, DE-102, Retisert™, Iluvein™ and Ozurdex™) have significantly improved the treatment of ocular diseases. However, most of these DDSs/devices are applied invasively and even need surgical procedures. Of these, use of de novo technologies such as advanced stimuli-responsive nanomaterials, multimodal nanosystems (NSs)/nanoconjugates (NCs), biomacromolecualr scaffolds, and bioengineered cell therapies need to be further advanced to get better compliance and higher clinical impacts. CONCLUSION Despite mankind successful battle on ocular diseases, our challenge will continue to battle the ocular disease that happen with aging. Yet, we need to understand the molecular aspects of eye diseases in a holistic way and develop ultimate treatment protocols preferably as non-invasive systems.
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Affiliation(s)
| | | | | | - Yadollah Omidi
- Research Centre for Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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109
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Al Khateb K, Ozhmukhametova EK, Mussin MN, Seilkhanov SK, Rakhypbekov TK, Lau WM, Khutoryanskiy VV. In situ gelling systems based on Pluronic F127/Pluronic F68 formulations for ocular drug delivery. Int J Pharm 2016; 502:70-9. [PMID: 26899977 DOI: 10.1016/j.ijpharm.2016.02.027] [Citation(s) in RCA: 178] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 02/14/2016] [Accepted: 02/15/2016] [Indexed: 12/15/2022]
Abstract
This study evaluated the use of Pluronic F127 and Pluronic F68 as excipients for formulating in situ gelling systems for ocular drug delivery. Thermal transitions have been studied in aqueous solutions of Pluronic F127, Pluronic F68 as well as their binary mixtures using differential scanning calorimetry, rheological measurements, and dynamic light scattering. It was established that the formation of transparent gels at physiologically relevant temperatures is observed only in the case of 20 wt% of Pluronic F127. The addition of Pluronic F68 to Pluronic F127 solutions increases the gelation temperature of binary formulation to above physiological range of temperatures. The biocompatibility evaluation of these formulations using slug mucosa irritation assay and bovine corneal erosion studies revealed that these polymers and their combinations do not cause significant irritation. In vitro drug retention study on glass surfaces and freshly excised bovine cornea showed superior performance of 20 wt% Pluronic F127 compared to other formulations. In addition, in vivo studies in rabbits demonstrated better retention performance of 20 wt% Pluronic F127 compared to Pluronic F68. These results confirmed that 20 wt% Pluronic F127 offers an attractive ocular formulation that can form a transparent gel in situ under physiological conditions with minimal irritation.
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Affiliation(s)
- Kosai Al Khateb
- Reading School of Pharmacy, University of Reading, Whiteknights, PO Box 224, Reading RG6 6AD, United Kingdom
| | | | - Marat N Mussin
- Semey State Medical University, 103 Abai Street, Semey 071400, Kazakhstan
| | | | | | - Wing Man Lau
- Reading School of Pharmacy, University of Reading, Whiteknights, PO Box 224, Reading RG6 6AD, United Kingdom.
| | - Vitaliy V Khutoryanskiy
- Reading School of Pharmacy, University of Reading, Whiteknights, PO Box 224, Reading RG6 6AD, United Kingdom.
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110
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Jain S, Spandana G, Agrawal AK, Kushwah V, Thanki K. Enhanced Antitumor Efficacy and Reduced Toxicity of Docetaxel Loaded Estradiol Functionalized Stealth Polymeric Nanoparticles. Mol Pharm 2015; 12:3871-84. [DOI: 10.1021/acs.molpharmaceut.5b00281] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sanyog Jain
- Centre for Pharmaceutical Nanotechnology, Department
of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Mohali-160062, Punjab, India
| | - Gollapalli Spandana
- Centre for Pharmaceutical Nanotechnology, Department
of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Mohali-160062, Punjab, India
| | - Ashish Kumar Agrawal
- Centre for Pharmaceutical Nanotechnology, Department
of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Mohali-160062, Punjab, India
| | - Varun Kushwah
- Centre for Pharmaceutical Nanotechnology, Department
of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Mohali-160062, Punjab, India
| | - Kaushik Thanki
- Centre for Pharmaceutical Nanotechnology, Department
of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Mohali-160062, Punjab, India
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111
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Pragatheeswaran AM, Chen SB. The influence of poly(acrylic acid) on micellization and gelation characteristics of aqueous Pluronic F127 copolymer system. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3757-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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112
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Hydrogels in ophthalmic applications. Eur J Pharm Biopharm 2015; 95:227-38. [DOI: 10.1016/j.ejpb.2015.05.016] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 05/05/2015] [Accepted: 05/21/2015] [Indexed: 12/20/2022]
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113
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Xie B, Jin L, Luo Z, Yu J, Shi S, Zhang Z, Shen M, Chen H, Li X, Song Z. An injectable thermosensitive polymeric hydrogel for sustained release of Avastin® to treat posterior segment disease. Int J Pharm 2015; 490:375-83. [PMID: 26027491 DOI: 10.1016/j.ijpharm.2015.05.071] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 05/11/2015] [Accepted: 05/26/2015] [Indexed: 10/23/2022]
Abstract
Delivery of drugs, especially bioactive macromolecules such as proteins and nucleic acids, to the posterior segment is still a significant challenge for pharmaceutical scientists. In the present study, we developed an injectable thermosensitive polymeric hydrogel for sustained release of Avastin(®) to treat posterior segment disorders. The payload of Avastin(®) to poly(lactic acid-co-glycolic acid)-poly(ethylene glycol)-poly(lactic acid-co-glycolic acid) (PLGA-PEG-PLGA) hydrogel did not influence its inherent sol-gel transition behavior, but shifted the sol-gel transition to a lower temperature. The resulting Avastin(®)/PLGA-PEG-PLGA hydrogels had a porous structure (pore size, 100 ∼ 150 μm) as determined by scanning electron microcopy (SEM), facilitating sustained Avastin(®) release over a period of up to 14 days in vitro. The PLGA-PEG-PLGA hydrogel was immediately formed in the vitreous humor after intravitreal injection, followed by slow clearance over an 8 week study period. The PLGA-PEG-PLGA hydrogel exhibited no apparent toxicity against retinal tissue, as indicated by the absence of inflammation, retinal necrosis, and stress responses, using optical coherence tomography (OCT) and histological/immunochemical analyses. Electrophysiology (ERG) examination also showed that the PLGA-PEG-PLGA hydrogel did not affect retinal function. In vivo pharmacokinetic studies indicated that the use of the PLGA-PEG-PLGA hydrogel greatly extended the release of Avastin(®) over time in the vitreous humor and retina after intravitreal injection. Together, these results demonstrated that the PLGA-PEG-PLGA hydrogel was a promising candidate for ocular drug delivery of Avastin(®)via intravitreal injection.
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Affiliation(s)
- Binbin Xie
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, 325027, PR China
| | - Ling Jin
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, 325027, PR China
| | - Zichao Luo
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, 325027, PR China; Wenzhou Institute of Biomaterials and Engineering, Wenzhou Medical University, Wenzhou, 325035, PR China
| | - Jing Yu
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, 325027, PR China; Wenzhou Institute of Biomaterials and Engineering, Wenzhou Medical University, Wenzhou, 325035, PR China
| | - Shuai Shi
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, 325027, PR China
| | - Zhaoliang Zhang
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, 325027, PR China
| | - Meixiao Shen
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, 325027, PR China
| | - Hao Chen
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, 325027, PR China.
| | - Xingyi Li
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, 325027, PR China.
| | - Zongming Song
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou, 325027, PR China.
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114
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115
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Yu S, Wang QM, Wang X, Liu D, Zhang W, Ye T, Yang X, Pan W. Liposome incorporated ion sensitive in situ gels for opthalmic delivery of timolol maleate. Int J Pharm 2015; 480:128-36. [PMID: 25615987 DOI: 10.1016/j.ijpharm.2015.01.032] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 12/31/2014] [Accepted: 01/18/2015] [Indexed: 12/30/2022]
Abstract
This study was aimed to design a liposomal based ion-sensitive in situ ophthalmic delivery system of timolol maleate (TM). The TM liposome was produced by the reverse evaporation technique coupled with pH-gradients method (REVPR), and then was incorporated into deacetylated gellan gum gels. The TM liposome was demonstrated to be a round and uniform shape in TEM pictures. Compared with the TM eye drops, the TM liposome produced a 1.93 folds increase in apparent permeability coefficients (Papp), resulting in a significant increase of the corneal penetration. The TM-loaded liposome incorporated ion sensitive in situ gels (TM L-ISG) showed longer retention time on corneal surface compared with the eye drops using gamma scintigraphy technology. Draize testing showed that TM L-ISG was non-irritant for ocular tissues. The biggest efficacy of TM L-ISG occurred 30 min after eye drops administration, and efficacy disappeared after 240min. Then, compared with the eye drops, the optimal TM L-ISG could quickly reduce the intraocular pressure and the effective time was significantly longer (P≤0.05). These results indicate that liposome incorporated ion sensitive in situ gels have a potential ability for the opthalmic delivery.
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Affiliation(s)
- Shihui Yu
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Qi-Ming Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China; Department of Pharmaceutics, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
| | - Xin Wang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Dandan Liu
- School of Biomedical & Chemical Engineering, Liaoning Institute of Science and Technology, Benxi 117004, PR China
| | - Wenji Zhang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Tiantian Ye
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Xinggang Yang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China.
| | - Weisan Pan
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China.
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116
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Agrawal AK, Urimi D, Harde H, Kushwah V, Jain S. Folate appended chitosan nanoparticles augment the stability, bioavailability and efficacy of insulin in diabetic rats following oral administration. RSC Adv 2015. [DOI: 10.1039/c5ra19115g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present study embarks upon the folic acid (FA) functionalization of chitosan nanoparticles and its implications on stability, oral bioavailability and hypoglycemic activity following oral administration.
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Affiliation(s)
- Ashish Kumar Agrawal
- Centre for Pharmaceutical Nanotechnology
- Department of Pharmaceutics
- National Institute of Pharmaceutical Education and Research (NIPER)
- Mohali
- India
| | - Dileep Urimi
- Centre for Pharmaceutical Nanotechnology
- Department of Pharmaceutics
- National Institute of Pharmaceutical Education and Research (NIPER)
- Mohali
- India
| | - Harshad Harde
- Centre for Pharmaceutical Nanotechnology
- Department of Pharmaceutics
- National Institute of Pharmaceutical Education and Research (NIPER)
- Mohali
- India
| | - Varun Kushwah
- Centre for Pharmaceutical Nanotechnology
- Department of Pharmaceutics
- National Institute of Pharmaceutical Education and Research (NIPER)
- Mohali
- India
| | - Sanyog Jain
- Centre for Pharmaceutical Nanotechnology
- Department of Pharmaceutics
- National Institute of Pharmaceutical Education and Research (NIPER)
- Mohali
- India
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Ding W, Ni W, Chen H, Yuan J, Huang X, Zhang Z, Wang Y, Yu Y, Yao K. Comparison of Drug Concentrations in Human Aqueous Humor after the Administration of 0.3% Gatifloxacin Ophthalmic Gel, 0.3% Gatifloxacin and 0.5% Levofloxacin Ophthalmic Solutions. Int J Med Sci 2015; 12:517-23. [PMID: 26078713 PMCID: PMC4466517 DOI: 10.7150/ijms.11376] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 05/25/2015] [Indexed: 11/16/2022] Open
Abstract
PURPOSE To investigate the penetration of 0.3% gatifloxacin ophthalmic gel, 0.3% gatifloxacin ophthalmic solution and 0.5% levofloxacin ophthalmic solution into aqueous humor after topical application. MATERIALS AND METHODS Age-related cataract patients (150 eyes in 150 cases) receiving phacoemulsification were randomly divided into three groups: a 0.3% gatifloxacin gel group (n=50), a 0.3% gatifloxacin solution group (n=50), and a 0.5% levofloxacin solution group (n=50). Each group was administered one drop of gel or solution every 15 minutes for four doses. Aqueous samples were collected at different time points after the last drop. High pressure liquid chromatography (HPLC) was applied to determine the concentrations. The one-way ANOVA analysis was performed. RESULTS Our data indicated that the concentration of the gatifloxacin gel group was higher than that of the gatifloxacin solution group at all time points (P <0.05); moreover, the gatifloxacin gel group exhibited higher levels than the levofloxacin solution group at 120.0 min and 180.0 min (P<0.05). Furthermore, the gatifloxacin gel produced the highest concentration at 120.0 min, and the gatifloxacin and levofloxacin solutions reached their peak values at 60.0 min. CONCLUSIONS 0.3% gatifloxacin ophthalmic gel application produced highest aqueous humor drug concentration, maintained the longest time, had the best penetration and bioavailability.
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Affiliation(s)
- Wenting Ding
- 1. From the Eye Center, Affiliated Second Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Weiling Ni
- 1. From the Eye Center, Affiliated Second Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Huilian Chen
- 1. From the Eye Center, Affiliated Second Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jingqun Yuan
- 2. Analysis Centre of Agrobiology and Environmental Sciences, Zhejiang University, Hangzhou, China
| | - Xiaodan Huang
- 1. From the Eye Center, Affiliated Second Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Zheng Zhang
- 1. From the Eye Center, Affiliated Second Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yao Wang
- 1. From the Eye Center, Affiliated Second Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yibo Yu
- 1. From the Eye Center, Affiliated Second Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ke Yao
- 1. From the Eye Center, Affiliated Second Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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118
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Multifunctional Polymeric Nano-Carriers in Targeted Drug Delivery. ADVANCES IN DELIVERY SCIENCE AND TECHNOLOGY 2015. [DOI: 10.1007/978-3-319-11355-5_15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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119
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Mucoadhesive polymers in the design of nano-drug delivery systems for administration by non-parenteral routes: A review. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2014.07.010] [Citation(s) in RCA: 333] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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120
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Famili A, Kahook MY, Park D. A Combined Micelle and Poly(Serinol Hexamethylene Urea)-Co-Poly(N-Isopropylacrylamide) Reverse Thermal Gel as an Injectable Ocular Drug Delivery System. Macromol Biosci 2014; 14:1719-29. [DOI: 10.1002/mabi.201400250] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 07/30/2014] [Indexed: 01/26/2023]
Affiliation(s)
- Amin Famili
- Department of Bioengineering; University of Colorado Denver, Department of Bioengineering; 12700 E 19th Avenue Mail Stop 8607 Aurora CO 80045 USA
| | - Malik Y. Kahook
- Department of Ophthalmology; University of Colorado Denver; Aurora CO 80045 USA
- Rocky Mountain Lions Eye Institute, University of Colorado; at Denver 1675 N. Ursula St. Mail Stop F731 Aurora CO 80045 USA
| | - Daewon Park
- Department of Bioengineering; University of Colorado Denver, Department of Bioengineering; 12700 E 19th Avenue Mail Stop 8607 Aurora CO 80045 USA
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121
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Yu J, Xu X, Yao F, Luo Z, Jin L, Xie B, Shi S, Ma H, Li X, Chen H. In situ covalently cross-linked PEG hydrogel for ocular drug delivery applications. Int J Pharm 2014; 470:151-7. [DOI: 10.1016/j.ijpharm.2014.04.053] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/08/2014] [Accepted: 04/21/2014] [Indexed: 01/15/2023]
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122
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Fusco S, Ullrich F, Pokki J, Chatzipirpiridis G, Özkale B, Sivaraman KM, Ergeneman O, Pané S, Nelson BJ. Microrobots: a new era in ocular drug delivery. Expert Opin Drug Deliv 2014; 11:1815-26. [DOI: 10.1517/17425247.2014.938633] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Stefano Fusco
- Institute of Robotics and Intelligent Systems, ETH Zurich,
Tannenstrasse 3, Zurich, 8037, Switzerland
| | - Franziska Ullrich
- Institute of Robotics and Intelligent Systems, ETH Zurich,
Tannenstrasse 3, Zurich, 8037, Switzerland
| | - Juho Pokki
- Institute of Robotics and Intelligent Systems, ETH Zurich,
Tannenstrasse 3, Zurich, 8037, Switzerland
| | - George Chatzipirpiridis
- Institute of Robotics and Intelligent Systems, ETH Zurich,
Tannenstrasse 3, Zurich, 8037, Switzerland
| | - Berna Özkale
- Institute of Robotics and Intelligent Systems, ETH Zurich,
Tannenstrasse 3, Zurich, 8037, Switzerland
| | - Kartik M Sivaraman
- Institute of Robotics and Intelligent Systems, ETH Zurich,
Tannenstrasse 3, Zurich, 8037, Switzerland
| | - Olgaç Ergeneman
- Institute of Robotics and Intelligent Systems, ETH Zurich,
Tannenstrasse 3, Zurich, 8037, Switzerland
| | - Salvador Pané
- Institute of Robotics and Intelligent Systems, ETH Zurich,
Tannenstrasse 3, Zurich, 8037, Switzerland
| | - Bradley J Nelson
- Institute of Robotics and Intelligent Systems, ETH Zurich,
Tannenstrasse 3, Zurich, 8037, Switzerland
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123
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Yang J, Yan J, Zhou Z, Amsden BG. Dithiol-PEG-PDLLA Micelles: Preparation and Evaluation as Potential Topical Ocular Delivery Vehicle. Biomacromolecules 2014; 15:1346-54. [DOI: 10.1021/bm4018879] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian Yang
- Department of Chemical Engineering, Queen’s University, Kingston, Ontario, Canada
| | - Jing Yan
- Department of Chemical Engineering, Queen’s University, Kingston, Ontario, Canada
| | - Zhihan Zhou
- Department of Chemical Engineering, Queen’s University, Kingston, Ontario, Canada
| | - Brian G. Amsden
- Department of Chemical Engineering, Queen’s University, Kingston, Ontario, Canada
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Improved stability and immunological potential of tetanus toxoid containing surface engineered bilosomes following oral administration. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2014; 10:431-40. [DOI: 10.1016/j.nano.2013.08.012] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 07/31/2013] [Accepted: 08/26/2013] [Indexed: 01/19/2023]
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125
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Xu Q, Kambhampati SP, Kannan RM. Nanotechnology approaches for ocular drug delivery. Middle East Afr J Ophthalmol 2014; 20:26-37. [PMID: 23580849 PMCID: PMC3617524 DOI: 10.4103/0974-9233.106384] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Blindness is a major health concern worldwide that has a powerful impact on afflicted individuals and their families, and is associated with enormous socio-economical consequences. The Middle East is heavily impacted by blindness, and the problem there is augmented by an increasing incidence of diabetes in the population. An appropriate drug/gene delivery system that can sustain and deliver therapeutics to the target tissues and cells is a key need for ocular therapies. The application of nanotechnology in medicine is undergoing rapid progress, and the recent developments in nanomedicine-based therapeutic approaches may bring significant benefits to address the leading causes of blindness associated with cataract, glaucoma, diabetic retinopathy and retinal degeneration. In this brief review, we highlight some promising nanomedicine-based therapeutic approaches for drug and gene delivery to the anterior and posterior segments.
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Affiliation(s)
- Qingguo Xu
- Department of Ophthalmology, Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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126
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Li J, Liu H, Liu LL, Cai CN, Xin HX, Liu W. Design and Evaluation of a Brinzolamide Drug–Resin in Situ Thermosensitive Gelling System for Sustained Ophthalmic Drug Delivery. Chem Pharm Bull (Tokyo) 2014; 62:1000-8. [DOI: 10.1248/cpb.c14-00451] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jing Li
- Department of Pharmaceutics, School of Pharmaceutical Science, Zhengzhou University
| | - Hua Liu
- Zhengzhou People’s Hospital, Yi He Hospital
| | - Li-li Liu
- Department of Pharmaceutics, School of Pharmaceutical Science, Zhengzhou University
| | - Chao-nan Cai
- Department of Pharmaceutics, School of Pharmaceutical Science, Zhengzhou University
| | | | - Wei Liu
- Department of Pharmaceutics, School of Pharmaceutical Science, Zhengzhou University
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127
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Singh J, Chhabra G, Pathak K. Development of acetazolamide-loaded, pH-triggered polymeric nanoparticulatein situgel for sustained ocular delivery:in vitro. ex vivoevaluation and pharmacodynamic study. Drug Dev Ind Pharm 2013; 40:1223-32. [DOI: 10.3109/03639045.2013.814061] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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128
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Ajazuddin, Alexander A, Khan J, Giri TK, Tripathi DK, Saraf S, Saraf S. Advancement in stimuli triggered in situ gelling delivery for local and systemic route. Expert Opin Drug Deliv 2012; 9:1573-92. [PMID: 23075325 DOI: 10.1517/17425247.2013.734806] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Current research efforts focused on the design and evaluation of drug delivery systems that are easy to administer require decreased administration frequency, and provide sustained drug release in order to increase clinical efficacy and compliance of the patients. The gel forming smart polymeric formulations offer numerous applications resemble sustained and prolonged action in contrast to conventional drug delivery systems. AREAS COVERED Article summarizes type of bioactive, sol-gel triggering factors, dose, rationales, and polymers involved in gelation with respect to their route of administration. A lot of work has been done with smart polymeric gelling system taking the advantage of stimuli (temperature and pH) triggered sol-gel phase-transition in the administered area that have great prospective in biomedical and pharmaceutical applications, particularly in target-specific controlled drug delivery systems. EXPERT OPINION Although the principle of gelation is so attractive, key issues remain to be solved which include (i) variability of the drug release, (ii) avoidance of burst release in case of depot formulation, and (iii) issues related to toxicity. Unfortunately, till now area concerning the detailed processes of the gelling formation is still not much explored. Despite this proclamation, many efforts are made in industry and institutions to improve concerned approaches. New materials and approaches enter the preclinical and clinical phases and one can be sure that this strategy will gain further clinical importance within the next years. Thus, this review article will assuredly serve as an informative tool for the innovators working in the concern area.
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Affiliation(s)
- Ajazuddin
- Rungta College of Pharmaceutical Sciences and Research, C.G., 490024, India
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