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Lavanya S, Kamath S M, Krishna Rao S, Rajapriya P, Patil S, Sundaresan S. Sustained delivery of andrographolide from 3D porous scaffolds imparting anticancer activity. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li S, Yu X, Li Y, Zhang T. Conductive polypyrrole-coated electrospun chitosan nanoparticles/poly(D,L-lactide) fibrous mat: influence of drug delivery and Schwann cells proliferation. Biomed Phys Eng Express 2022; 8. [PMID: 35168214 DOI: 10.1088/2057-1976/ac5528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/15/2022] [Indexed: 11/11/2022]
Abstract
For nerve tissue engineering (NTE), scaffolds with the ability to release drugs under control and support the rapid proliferation of cells are very important for the repair of nerve defects. This study aimed to fabricate a conductive drug-loaded fiber mat by electrospinning and assess its potential as a scaffold for Schwann cells proliferation. The conductive polypyrrole (PPy) was coated on an electrospun poly (D, L-lactide) (PLA) fibrous mat, which was simultaneously embedded with protein-loaded chitosan nanoparticles and ibuprofen as a model small molecule drug. The fibrous mat shows suitable conductivity, mechanical properties, and hydrophilicity for NTE. For drug release and degradation studies, the fibrous mat can achieve sustained release of bovine serum albumin (BSA) and ibuprofen, and the PPy coating can increase the surface wettability and conductivity while slowing down the degradation of the fibrous mat. The application of electrical stimulation (ES) to the fibrous mat can accelerate the release of ibuprofen, but there was no significant effect on the release rate of the protein. The fibrous mat showed no cytotoxicityin vitro, and Schwann cells (SCs) can adhere, grow, and proliferate well on mats. At the 120th hour of culturein vitro, the relative growth rate of SCs on the conductive drug-loaded fibrous mat reached 198.22 ± 2.34%, which was an increase of 37.93% compared to the SCs on the drug-loaded fibrous mat with ES. The density and elongation of SCs on the conductive drug-loaded fibrous mat were greater than those on the PLA fibrous mat, indicating that the conductive polypyrrole-coated electrospun chitosan nanoparticles/PLA fibrous mat has good potential for application in nerve regeneration.
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Affiliation(s)
- Siqi Li
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Xiaoling Yu
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Yuan Li
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China.,Wuhan University of Technology Sanya Science and Education Innovation Park, Sanya 572024, People's Republic of China
| | - Tian Zhang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, People's Republic of China.,Wuhan University of Technology Sanya Science and Education Innovation Park, Sanya 572024, People's Republic of China.,State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, People's Republic of China
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Gupta N, Kamath S M, Rao SK, D J, Patil S, Gupta N, Arunachalam KD. Kaempferol loaded albumin nanoparticles and dexamethasone encapsulation into electrospun polycaprolactone fibrous mat – Concurrent release for cartilage regeneration. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102666] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Fundamentals and Current Strategies for Peripheral Nerve Repair and Regeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1249:173-201. [PMID: 32602098 DOI: 10.1007/978-981-15-3258-0_12] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A body of evidence indicates that peripheral nerves have an extraordinary yet limited capacity to regenerate after an injury. Peripheral nerve injuries have confounded professionals in this field, from neuroscientists to neurologists, plastic surgeons, and the scientific community. Despite all the efforts, full functional recovery is still seldom. The inadequate results attained with the "gold standard" autograft procedure still encourage a dynamic and energetic research around the world for establishing good performing tissue-engineered alternative grafts. Resourcing to nerve guidance conduits, a variety of methods have been experimentally used to bridge peripheral nerve gaps of limited size, up to 30-40 mm in length, in humans. Herein, we aim to summarize the fundamentals related to peripheral nerve anatomy and overview the challenges and scientific evidences related to peripheral nerve injury and repair mechanisms. The most relevant reports dealing with the use of both synthetic and natural-based biomaterials used in tissue engineering strategies when treatment of nerve injuries is envisioned are also discussed in depth, along with the state-of-the-art approaches in this field.
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Manjunath Kamath S, Jaison D, Rao SK, Sridhar K, Kasthuri N, Gopinath V, Sivaperumal P, Gupta N, Shantanu Patil S. In vitro augmentation of chondrogenesis by Epigallocatechin gallate in primary Human chondrocytes - Sustained release model for cartilage regeneration. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Melatonin delivery from PCL scaffold enhances glycosaminoglycans deposition in human chondrocytes – Bioactive scaffold model for cartilage regeneration. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.08.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kamath SM, Sridhar K, Jaison D, Gopinath V, Ibrahim BKM, Gupta N, Sundaram A, Sivaperumal P, Padmapriya S, Patil SS. Fabrication of tri-layered electrospun polycaprolactone mats with improved sustained drug release profile. Sci Rep 2020; 10:18179. [PMID: 33097770 PMCID: PMC7584580 DOI: 10.1038/s41598-020-74885-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 09/28/2020] [Indexed: 12/16/2022] Open
Abstract
Modulation of initial burst and long term release from electrospun fibrous mats can be achieved by sandwiching the drug loaded mats between hydrophobic layers of fibrous polycaprolactone (PCL). Ibuprofen (IBU) loaded PCL fibrous mats (12% PCL-IBU) were sandwiched between fibrous polycaprolactone layers during the process of electrospinning, by varying the polymer concentrations (10% (w/v), 12% (w/v)) and volume of coat (1 ml, 2 ml) in flanking layers. Consequently, 12% PCL-IBU (without sandwich layer) showed burst release of 66.43% on day 1 and cumulative release (%) of 86.08% at the end of 62 days. Whereas, sandwich groups, especially 12% PCLSW-1 & 2 (sandwich layers-1 ml and 2 ml of 12% PCL) showed controlled initial burst and cumulative (%) release compared to 12% PCL-IBU. Moreover, crystallinity (%) and hydrophobicity of the sandwich models imparted control on ibuprofen release from fibrous mats. Further, assay for cytotoxicity and scanning electron microscopic images of cell seeded mats after 5 days showed the mats were not cytotoxic. Nuclear Magnetic Resonance spectroscopic analysis revealed weak interaction between ibuprofen and PCL in nanofibers which favors the release of ibuprofen. These data imply that concentration and volume of coat in flanking layer imparts tighter control on initial burst and long term release of ibuprofen.
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Affiliation(s)
- S Manjunath Kamath
- Department of Translational Medicine and Research, SRM Medical College, SRMIST, Kattankulathur, Tamil Nadu, 603203, India.
| | - K Sridhar
- Institute of Craniofacial, Aesthetic & Plastic Surgery (ICAPS), SRM Institute for Medical Sciences (SIMS), Chennai, Tamil Nadu, 600026, India
| | - D Jaison
- Nanotechnology Research Center (NRC), SRMIST, Kattankulathur, Tamil Nadu, 603203, India
| | - V Gopinath
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - B K Mohamed Ibrahim
- Institute of Craniofacial, Aesthetic & Plastic Surgery (ICAPS), SRM Institute for Medical Sciences (SIMS), Chennai, Tamil Nadu, 600026, India
| | - Nilkantha Gupta
- Department of Translational Medicine and Research, SRM Medical College, SRMIST, Kattankulathur, Tamil Nadu, 603203, India
| | - A Sundaram
- Department of Pathology, SRM Medical College, SRMIST, Kattankulathur, Tamil Nadu, 603203, India
| | - P Sivaperumal
- Department of Pharmacology, Saveetha Dental College (SDC), Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
| | - S Padmapriya
- Electrochemical Systems Laboratory, SRM Research Institute, SRMIST, Kattankulathur, Tamil Nadu, 603203, India
| | - S Shantanu Patil
- Department of Translational Medicine and Research, SRM Medical College, SRMIST, Kattankulathur, Tamil Nadu, 603203, India
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Rayner MLD, Grillo A, Williams GR, Tawfik E, Zhang T, Volitaki C, Craig DQM, Healy J, Phillips JB. Controlled local release of PPARγ agonists from biomaterials to treat peripheral nerve injury. J Neural Eng 2020; 17:046030. [PMID: 32780719 DOI: 10.1088/1741-2552/aba7cc] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
OBJECTIVE Poor clinical outcomes following peripheral nerve injury (PNI) are partly attributable to the limited rate of neuronal regeneration. Despite numerous potential drug candidates demonstrating positive effects on nerve regeneration rate in preclinical models, no drugs are routinely used to improve restoration of function in clinical practice. A key challenge associated with clinical adoption of drug treatments in nerve injured patients is the requirement for sustained administration of doses associated with undesirable systemic sideeffects. Local controlled-release drug delivery systems could potentially address this challenge, particularly through the use of biomaterials that can be implanted at the repair site during the microsurgical repair procedure. APPROACH In order to test this concept, this study used various biomaterials to deliver ibuprofen sodium or sulindac sulfide locally in a controlled manner in a rat sciatic nerve injury model. Following characterisation of release parameters in vitro, ethylene vinyl acetate tubes or polylactic-co-glycolic acid wraps, loaded with ibuprofen sodium or sulindac sulfide, were placed around directly-repaired nerve transection or nerve crush injuries in rats. MAIN RESULTS Ibuprofen sodium, but not sulindac sulfide caused an increase in neurites in distal nerve segments and improvements in functional recovery in comparison to controls with no drug treatment. SIGNIFICANCE This study showed for the first time that local delivery of ibuprofen sodium using biomaterials improves neurite growth and functional recovery following PNI and provides the basis for future development of drug-loaded biomaterials suitable for clinical translation.
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Affiliation(s)
- M L D Rayner
- Biomaterials & Tissue Engineering, UCL Eastman Dental Institute, UCL, London, United Kingdom. UCL School of Pharmacy, UCL, London, United Kingdom. UCL Centre for Nerve Engineering, London, United Kingdom
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Silva LSD, Gindri IDM, Salmoria GV, Roesler CRDM. Physicochemical characterization, drug release and mechanical analysis of ibuprofen-loaded uhmwpe for orthopedic applications. POLIMEROS 2020. [DOI: 10.1590/0104-1428.04220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Affiliation(s)
| | | | - Gean Vitor Salmoria
- Universidade Federal de Santa Catarina, Brasil; Universidade Federal de Santa Catarina, Brasil
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Haley RM, von Recum HA. Localized and targeted delivery of NSAIDs for treatment of inflammation: A review. Exp Biol Med (Maywood) 2019; 244:433-444. [PMID: 29996674 PMCID: PMC6546999 DOI: 10.1177/1535370218787770] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
IMPACT STATEMENT This work provides an overview of research currently being done exploring potential drug delivery device strategies for NSAIDs as an alternative to systemic delivery. Commentary on this field is made in an attempt to aid future experimental design, enabling researchers to determine the drugs and delivery vehicles which are most advantageous for them to pursue, as well as suggestions to standardize the reporting of such future research.
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Affiliation(s)
- Rebecca M Haley
- Department of Biomedical Engineering,
Case
Western Reserve University, Cleveland,
OH 44106, USA
| | - Horst A von Recum
- Department of Biomedical Engineering,
Case
Western Reserve University, Cleveland,
OH 44106, USA
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Structure and properties of polycaprolactone/ibuprofen rods prepared by melt extrusion for implantable drug delivery. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-1999-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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