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Wang Y, Wang C. Novel Eye Drop Delivery Systems: Advance on Formulation Design Strategies Targeting Anterior and Posterior Segments of the Eye. Pharmaceutics 2022; 14:pharmaceutics14061150. [PMID: 35745723 PMCID: PMC9229693 DOI: 10.3390/pharmaceutics14061150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/18/2022] [Accepted: 05/25/2022] [Indexed: 11/30/2022] Open
Abstract
Eye drops are the most common and convenient route of topical administration and the first choice of treatment for many ocular diseases. However, the ocular bioavailability of traditional eye drops (i.e., solutions, suspensions, and ointments) is very low because of ophthalmic physiology and barriers, which greatly limits their therapeutic effect. Over the past few decades, many novel eye drop delivery systems, such as prodrugs, cyclodextrins, in situ gels, and nanoparticles, have been developed to improve ophthalmic bioavailability. These novel eye drop delivery systems have good biocompatibility, adhesion, and propermeation properties and have shown superior performance and efficacy over traditional eye drops. Therefore, the purpose of this review was to systematically present the research progress on novel eye drop delivery systems and provide a reference for the development of dosage form, clinical application, and commercial transformation of eye drops.
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Qian R, Jing B, Jiang D, Gai Y, Zhu Z, Huang X, Gao Y, Lan X, An R. Multi-antitumor therapy and synchronous imaging monitoring based on exosome. Eur J Nucl Med Mol Imaging 2022; 49:2668-2681. [DOI: 10.1007/s00259-022-05696-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 01/19/2022] [Indexed: 02/06/2023]
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Zhou C, Chen Y, Huang M, Ling Y, Yang L, Zhao G, Chen J. A new type of dual temperature sensitive triblock polymer (P(AM- co-AN)- b-PDMA- b-PNIPAM) and its self-assembly and gel behavior. NEW J CHEM 2021. [DOI: 10.1039/d0nj06153k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A dual-action polymer (P(AM-co-AN)-b-PDMA-b-PNIPAM) and its sol–gel behavior only through simple temperature changes.
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Affiliation(s)
- Cheng Zhou
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Yan Chen
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Mingjun Huang
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Yi Ling
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Liming Yang
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Guochen Zhao
- Shandong Provincial Key Laboratory of High Strength Lightweight Metallic Materials
- Advanced Materials Institute
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan 250014
- China
| | - Jie Chen
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
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Colloidal (Gd0.98Nd0.02)2O3 nanothermometers operating in a cell culture medium within the first and second biological windows. J RARE EARTH 2020. [DOI: 10.1016/j.jre.2019.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Madni A, Rahem MA, Tahir N, Sarfraz M, Jabar A, Rehman M, Kashif PM, Badshah SF, Khan KU, Santos HA. Non-invasive strategies for targeting the posterior segment of eye. Int J Pharm 2017; 530:326-345. [PMID: 28755994 DOI: 10.1016/j.ijpharm.2017.07.065] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/20/2017] [Accepted: 07/21/2017] [Indexed: 01/02/2023]
Abstract
The safe and effective treatment of eye diseases has been remained a global myth. Several advancements have been done and various drug delivery and treatment techniques have been suggested. The Posterior segment disorders are the leading cause of visual impairments and blindness. Targeting the therapeutic agents to the anterior and posterior segments of the eye has attracted extensive attention from the scientific community. Significant key factors in the success of ocular therapy are the development of safe, effective, economic and non-invasive novel drug delivery systems. These specialized non-invasive ocular drug delivery systems revolutionized the drug delivery strategies by overcoming the limitations, provided targeted delivery to the ocular tissues by avoiding larger doses, and reducing the toxicity encountered by the conventional approaches. These non-invasive systems are fabricated by ingredients encompassing biodegradability, biocompatibility, mucoadhesion, solubility and permeability enhancement and stimuli responsiveness. The variety of routes are utilized to provide minimally invasive drug delivery to the patients without any discomfort and pain. This review is focused on the brief introduction, types, significance, preparation techniques, components and mechanism of drug release of non-invasive systems, including in situ gelling systems, microspheres, iontophoresis, nanoparticles, nanosuspensions and specialized novel emulsions.
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Affiliation(s)
- Asadullah Madni
- Department of Pharmacy, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan.
| | - Muhammad Abdur Rahem
- Department of Pharmacy, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan
| | - Nayab Tahir
- Department of Pharmacy, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan; Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Muhammad Sarfraz
- Department of Pharmacy, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan
| | - Abdul Jabar
- Department of Pharmacy, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan
| | - Mubashar Rehman
- Department of Pharmacy, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan
| | - Prince Muhammad Kashif
- Department of Pharmacy, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan
| | - Syed Faisal Badshah
- Department of Pharmacy, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan
| | - Kifayat Ullah Khan
- Department of Pharmacy, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan
| | - Hélder A Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland; Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014 Helsinki, Finland.
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Wang R, Zhang X, Zhang Z, Zhong H, Chen Y, Zhao E, Vasilescu S, Liu L. Modified FIR thermometry for surface temperature sensing by using high power laser. OPTICS EXPRESS 2017; 25:848-856. [PMID: 28157972 DOI: 10.1364/oe.25.000848] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The FIR (fluorescence intensity ratio) technique for optical thermometry has attracted considerable attention over recent years due to its high sensitivity and high spatial resolution. However, it is thought that a heating effect induced by incident light may lead to temperature overestimations, which in turn impedes the reliability of this technique for applications which require high levels of accuracy. To further improve the FIR technique, this paper presents a modified calibration expression, which is suitable for surface temperature sensing, based on the temperature distribution (calculated through COMSOL software). In addition, this modified method is verified by the experimental data.
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Hui L, Qin S, Yang L. Upper Critical Solution Temperature Polymer, Photothermal Agent, and Erythrocyte Membrane Coating: An Unexplored Recipe for Making Drug Carriers with Spatiotemporally Controlled Cargo Release. ACS Biomater Sci Eng 2016; 2:2127-2132. [PMID: 33465888 DOI: 10.1021/acsbiomaterials.6b00459] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
"On-demand" drug release within target site is critical for targeted drug delivery systems. We herein integrate the advantages of upper critical solution temperature (UCST) polymers, photothermal agent, and red blood cell (RBC) membrane coating into a single drug delivery nanosystem and, for the first time, achieve remotely controlled UCST polymer-based drug delivery system that undergoes "on-demand" drug release within specified zone. When in laser-off state, the resulting nanosystem demonstrates significantly diminished drug self-leakage, owing to shielding by the RBC membrane coating. Upon laser irradiation, this system undergoes responsive drug release, likely because of particle swelling due to its UCST polymer component's hydrophobic-to-hydrophilic transition triggered by the rapid localized heating generated by its preloaded photothermal agent via photothermal effects. As a result, this drug delivery system exhibits spatiotemporally controlled cytotoxicity to cultured cells, efficiently eradicating irradiated cancerous cells without appreciably impacting nonirradiated ones, those ∼0.7 cm away from the irradiation zone. This work may open an avenue to thermosensitive drug delivery systems potentially "ideal" for intravenous administration and inspire future efforts on biomedical applications of UCST polymers.
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Affiliation(s)
- Liwei Hui
- CAS Key Laboratory of Soft Matter Chemistry and §School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026 China
| | - Shuai Qin
- CAS Key Laboratory of Soft Matter Chemistry and School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026 China
| | - Lihua Yang
- CAS Key Laboratory of Soft Matter Chemistry and School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026 China
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