1
|
Venugopal D, Vishwakarma S, Sharma N, Kaur I, Samavedi S. Evaluating the protective effects of dexamethasone and electrospun mesh combination on primary human mixed retinal cells under hyperglycemic stress. Int J Pharm 2024; 651:123768. [PMID: 38176477 DOI: 10.1016/j.ijpharm.2024.123768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/21/2023] [Accepted: 01/01/2024] [Indexed: 01/06/2024]
Abstract
Chronic inflammation is a leading cause of neurodegeneration and vision loss in hyperglycemia-associated conditions such as diabetic retinopathy. Corticosteroid injections are widely used for treatment but suffer from limitations such as rapid drug clearance, short drug half-lives and frequent administration. While drug release from biomaterial carriers can overcome these shortcomings, evaluating the combined effects of corticosteroids and polymeric matrices under hyperglycemic stress is an important step towards aiding translation. In this study, we investigated the effects of dexamethasone (DEX) and electrospun mesh combination on primary human mixed retinal cells under normal and hyperglycemic culture conditions. DEX-incorporated poly(lactide-co-glycolide) (PLGA) meshes were prepared and characterized for architecture, chemistry, drug distribution and in vitro release. The meshes exhibited cumulative in vitro drug release of 39.5 % over 2 months at a near constant rate. Under normal culture conditions, DEX-PLGA meshes promoted significantly higher viability of mixed retinal cells than the control groups but without adverse phenotypic activation. Under hyperglycemic conditions, DEX supplementation resulted in higher viability than the control, although the highest viability was achieved only when DEX was added to cells cultured on PLGA fibers. The combination of DEX and PLGA fibers also promoted higher mRNA expression of the antioxidant GSH under hyperglycemia. Importantly, the largest reduction in the production of pro-inflammatory cytokines viz., MMP-9, IL-6, IL-8 and VEGF-R1 was observed for the DEX and PLGA combination. Our study reveals a combined effect of DEX and electrospun fibers in combating hyperglycemia-driven pro-inflammatory responses, which can aid the development of DEX-loaded electrospun implants for diabetes-driven retinal conditions.
Collapse
Affiliation(s)
- Dhivya Venugopal
- Department of Chemical Engineering, Indian Institute of Technology Hyderabad, India
| | - Sushma Vishwakarma
- Prof Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad, India; Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Neha Sharma
- Prof Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad, India; Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Inderjeet Kaur
- Prof Brien Holden Eye Research Centre, LV Prasad Eye Institute, Hyderabad, India.
| | - Satyavrata Samavedi
- Department of Chemical Engineering, Indian Institute of Technology Hyderabad, India.
| |
Collapse
|
2
|
Hu Y, Wang Y, Wen X, Pan Y, Cheng X, An R, Gao G, Chen HY, Ye D. Responsive Trimodal Probes for In Vivo Imaging of Liver Inflammation by Coassembly and GSH-Driven Disassembly. RESEARCH 2020; 2020:4087069. [PMID: 33029587 PMCID: PMC7520820 DOI: 10.34133/2020/4087069] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 08/06/2020] [Indexed: 12/14/2022]
Abstract
Noninvasive in vivo imaging of hepatic glutathione (GSH) levels is essential to early diagnosis and prognosis of acute hepatitis. Although GSH-responsive fluorescence imaging probes have been reported for evaluation of hepatitis conditions, the low penetration depth of light in liver tissue has impeded reliable GSH visualization in the human liver. We present a liver-targeted and GSH-responsive trimodal probe (GdNPs-Gal) for rapid evaluation of lipopolysaccharide- (LPS-) induced acute liver inflammation via noninvasive, real-time in vivo imaging of hepatic GSH depletion. GdNPs-Gal are formed by molecular coassembly of a GSH-responsive Gd(III)-based MRI probe (1-Gd) and a liver-targeted probe (1-Gal) at a mole ratio of 5/1 (1-Gd/1-Gal), which shows high r 1 relaxivity with low fluorescence and fluorine magnetic resonance spectroscopic (19F-MRS) signals. Upon interaction with GSH, 1-Gd and 1-Gal are cleaved and GdNPs-Gal rapidly disassemble into small molecules 2-Gd, 2-Gal, and 3, producing a substantial decline in r 1 relaxivity with compensatory enhancements in fluorescence and 19F-MRS. By combining in vivo magnetic resonance imaging (1H-MRI) with ex vivo fluorescence imaging and 19F-MRS analysis, GdNPs-Gal efficiently detect hepatic GSH using three independent modalities. We noninvasively visualized LPS-induced liver inflammation and longitudinally monitored its remediation in mice after treatment with an anti-inflammatory drug, dexamethasone (DEX). Findings highlight the potential of GdNPs-Gal for in vivo imaging of liver inflammation by integrating molecular coassembly with GSH-driven disassembly, which can be applied to other responsive molecular probes for improved in vivo imaging.
Collapse
Affiliation(s)
- Yuxuan Hu
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yuqi Wang
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xidan Wen
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yifan Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Xiaoyang Cheng
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Ruibing An
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Guandao Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Deju Ye
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| |
Collapse
|
3
|
Joy N, Samavedi S. Identifying Specific Combinations of Matrix Properties that Promote Controlled and Sustained Release of a Hydrophobic Drug from Electrospun Meshes. ACS OMEGA 2020; 5:15865-15876. [PMID: 32656407 PMCID: PMC7345396 DOI: 10.1021/acsomega.0c00954] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
Despite advances in the development of degradable polymers for drug delivery, effective translation of drug-loaded materials is often hindered due to a poor understanding of matrix property combinations that promote controlled and sustained release. In this study, we investigated the influence of dominant factors on the release of a hydrophobic glucocorticoid dexamethasone (DEX) from electrospun meshes. Polycaprolactone meshes released 98% of the drug within 24 h, while poly(l-lactide) meshes exhibited negligible release even after 28 days despite both polymers being slow-degrading. Differences in drug-polymer interactions and drug-polymer miscibility-but neither matrix degradation nor differences in bulk hydrophobicity-influenced DEX release from these semi-crystalline matrices. Poly(d,l-lactide-co-glycolide) 50:50 meshes possessing two different fiber diameters exhibited a sequential burst and sustained release, while poly(d,l-lactide-co-glycolide) 85:15 meshes cumulatively released 26% drug in a controlled manner. Although initial drug release from these matrices was driven by differences in matrix architecture and solid-state drug solubility, release toward the later stages was influenced by a combination of fiber swelling and matrix degradation as evidenced by gross and microstructural changes to the mesh network. We suggest that drug release from polymeric matrices can be better understood via investigation of critical matrix characteristics influencing release, as well as concomitant examination of drug-polymer interactions and miscibility. Our findings offer rational matrix design criteria to achieve controlled/extended drug release for promoting sustained biological responses.
Collapse
|
4
|
Controlled release of doxycycline within core/shell
poly(ε‐caprolactone)
/poly(ethylene oxide) fibers via coaxial electrospinning. J Appl Polym Sci 2020. [DOI: 10.1002/app.49273] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
5
|
Alves PE, Soares BG, Lins LC, Livi S, Santos EP. Controlled delivery of dexamethasone and betamethasone from PLA electrospun fibers: A comparative study. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.05.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
6
|
Xu X, Wang L, Luo Z, Ni Y, Sun H, Gao X, Li Y, Zhang S, Li Y, Wei S. Facile and Versatile Strategy for Construction of Anti-Inflammatory and Antibacterial Surfaces with Polydopamine-Mediated Liposomes Releasing Dexamethasone and Minocycline for Potential Implant Applications. ACS APPLIED MATERIALS & INTERFACES 2017; 9:43300-43314. [PMID: 29140074 DOI: 10.1021/acsami.7b06295] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Reducing early nonbacterial inflammation induced by implanted materials and infection resulting from bacterial contamination around the implant-abutment interface could greatly decrease implant failure rates, which would be of clinical significance. In this work, we presented a facile and versatile strategy for the construction of anti-inflammatory and antibacterial surfaces. Briefly, the surfaces of polystyrene culture plates were first coated with polydopamine and then decorated with dexamethasone plus minocycline-loaded liposomes (Dex/Mino liposomes), which was validated by contact angle goniometry, quartz crystal microbalance, and fluorescence microscopy. Dex/Mino liposomes were dispersed on functional surfaces and the drug release kinetics exhibited the sustained release of dexamethasone and minocycline. Our results demonstrated that the Dex/Mino liposome-modified surfaces had good biocompatibility. Additionally, liposomal dexamethasone reduced proinflammatory mediator expression (particularly IL-6 and TNF-α) in lipopolysaccharide-stimulated human gingival fibroblasts and human mesenchymal stem cells. Moreover, liposomal minocycline prevented the adhesion and proliferation of Porphyromonas gingivalis (Gram-negative bacteria) and Streptococcus mutans (Gram-positive bacteria). These findings demonstrate that an anti-inflammatory and antibacterial surface was developed, using dopamine as a medium and combining a liposomal delivery device, which has potential for use to reduce implant failure rates. Accordingly, the surface modification strategy presented could be useful in biofunctionalization of implant materials.
Collapse
Affiliation(s)
- Xiao Xu
- Central Laboratory/Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology , Beijing 100081, P. R. China
| | - Lixin Wang
- Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University , Beijing 100038, P. R. China
| | - Zuyuan Luo
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, P. R. China
| | - Yaofeng Ni
- Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University , Beijing 100038, P. R. China
| | - Haitao Sun
- Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University , Beijing 100038, P. R. China
| | - Xiang Gao
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University , Chongqing 401147, P. R. China
| | - Yongliang Li
- Central Laboratory/Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology , Beijing 100081, P. R. China
| | - Siqi Zhang
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, P. R. China
| | - Yan Li
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, P. R. China
| | - Shicheng Wei
- Central Laboratory/Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology , Beijing 100081, P. R. China
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, P. R. China
| |
Collapse
|
7
|
Sharifi F, Sooriyarachchi AC, Altural H, Montazami R, Rylander MN, Hashemi N. Fiber Based Approaches as Medicine Delivery Systems. ACS Biomater Sci Eng 2016; 2:1411-1431. [DOI: 10.1021/acsbiomaterials.6b00281] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Farrokh Sharifi
- Department
of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | | | - Hayriye Altural
- Department
of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Reza Montazami
- Department
of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
- Center
of Advanced Host Defense Immunobiotics and Translational Medicine, Iowa State University, Ames, Iowa 50011, United States
| | - Marissa Nichole Rylander
- Department
of Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Nastaran Hashemi
- Department
of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
- Center
of Advanced Host Defense Immunobiotics and Translational Medicine, Iowa State University, Ames, Iowa 50011, United States
| |
Collapse
|
8
|
Jiang X, Huang J. Adsorption of Rhodamine B on two novel polar-modified post-cross-linked resins: Equilibrium and kinetics. J Colloid Interface Sci 2016; 467:230-238. [DOI: 10.1016/j.jcis.2016.01.031] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/11/2016] [Accepted: 01/14/2016] [Indexed: 11/26/2022]
|
9
|
Keeler GD, Durdik JM, Stenken JA. Effects of delayed delivery of dexamethasone-21-phosphate via subcutaneous microdialysis implants on macrophage activation in rats. Acta Biomater 2015; 23:27-37. [PMID: 25985913 DOI: 10.1016/j.actbio.2015.05.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/25/2015] [Accepted: 05/11/2015] [Indexed: 12/25/2022]
Abstract
Macrophage activation is of interest in the biomaterials field since macrophages with an M(Dex) characteristic phenotype, i.e., CD68(+)CD163(+), are believed to result in improved integration of the biomaterial as well as improved tissue remodeling and increased biomaterial longevity. To facilitate delivery of a macrophage modulator, dexamethasone-21-phosphate (Dex), microdialysis probes were subcutaneously implanted in male Sprague-Dawley rats. Dex localized delivery was delayed to the third day post implantation as a means to alter macrophage activation state at an implant site. To better elucidate the molecular mechanisms associated with M(Dex) macrophage activation, CCL2 was quantified in dialysates, gene expression ratios were determined from excised tissue surrounding the implant, histological analyses, and immunohistochemical analyses (CD68, CD163) were performed. Delayed Dex infusion resulted in the up-regulation of IL-6 at the transcript level in the tissue in contact with the microdialysis probe and decreased CCL2 concentrations collected in dialysates. Histological analyses showed increased cellular density as compared to controls in response to delayed Dex infusion. Dex delayed infusion resulted in an increased percentage of CD68(+)CD163(+), M(Dex), macrophages in the tissue surrounding the microdialysis probe as compared to probes that served as controls.
Collapse
Affiliation(s)
- Geoffrey D Keeler
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, USA; Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA
| | - Jeannine M Durdik
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, USA; Department of Biological Sciences, University of Arkansas, Fayetteville, AR 72701, USA
| | - Julie A Stenken
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, USA; Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA.
| |
Collapse
|
10
|
Li YF, Rubert M, Yu Y, Besenbacher F, Chen M. Delivery of dexamethasone from electrospun PCL–PEO binary fibers and their effects on inflammation regulation. RSC Adv 2015. [DOI: 10.1039/c5ra03099d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Differences in surface topography, chemical composition, wettability and release kinetics of the anti-inflammatory drug dexamethasone among different PCL–PEO fibers collectively affected the regulation of inflammatory related gene expression.
Collapse
Affiliation(s)
- Yan-Fang Li
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- DK-8000 Aarhus C
- Denmark
- Institute of Nanoscience and Nanotechnology
| | - Marina Rubert
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Ying Yu
- Institute of Nanoscience and Nanotechnology
- Central China Normal University
- Wuhan 430079
- China
| | - Flemming Besenbacher
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Menglin Chen
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| |
Collapse
|
11
|
Najafi-Taher R, Derakhshan MA, Faridi-Majidi R, Amani A. Preparation of an ascorbic acid/PVA–chitosan electrospun mat: a core/shell transdermal delivery system. RSC Adv 2015. [DOI: 10.1039/c5ra03813h] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Core/shell l-ascorbic acid/poly(vinyl alcohol)–chitosan (ASC/PVA–CS) nanofibers were successfully prepared utilizing coaxial electrospinning and their characteristics were compared with monolithic blend PVA–CS–ASC nanofibers.
Collapse
Affiliation(s)
- Roqiye Najafi-Taher
- Department of Medical Nanotechnology
- School of Advanced Technologies in Medicine
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Mohammad Ali Derakhshan
- Department of Medical Nanotechnology
- School of Advanced Technologies in Medicine
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Reza Faridi-Majidi
- Department of Medical Nanotechnology
- School of Advanced Technologies in Medicine
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Amir Amani
- Department of Medical Nanotechnology
- School of Advanced Technologies in Medicine
- Tehran University of Medical Sciences
- Tehran
- Iran
| |
Collapse
|