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Cidade do Carmo C, Brito M, Oliveira JP, Marques A, Ferreira I, Baptista AC. Cellulose Acetate and Polycaprolactone Fibre Coatings on Medical-Grade Metal Substrates for Controlled Drug Release. Polymers (Basel) 2024; 16:2006. [PMID: 39065323 PMCID: PMC11280613 DOI: 10.3390/polym16142006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/03/2024] [Accepted: 07/07/2024] [Indexed: 07/28/2024] Open
Abstract
This study explores a method that has the potential to be cost effective in inhibiting biofilm formation on metallic prostheses, thereby preventing rejection or the requirement for replacement. A cost-effective metal alloy used in biomedical implants was chosen as the substrate, and ibuprofen (Ibu), a well-known anti-inflammatory drug, was selected for drug release tests for its widespread availability and accessibility. Multilayer coatings consisting of cellulose acetate (CA), polycaprolactone (PCL), and chitosan (CHI), with or without ibuprofen (Ibu) content, were applied onto medical-grade stainless steel (SS-316 type) through electrospinning, electrospray, or blow spinning. The adhesion of the CA, PCL, and layered CA/PCL membranes, with thicknesses ranging from 20 to 100 μm, to SS substrates varied between 0.15 N and 0.22 N without CHI, which increased to 0.21 and 0.74 N, respectively, when a CHI interlayer was introduced by electrospraying between the SS and the coatings. Although drug release in a simulated body fluid (SBF) medium is predominantly governed by diffusion-driven mechanisms in all single- and multilayer coatings, a delayed release was noted in CA coatings containing Ibu when overlaid with a PCL coating produced by blow spinning. This suggests avenues for further investigations into combinations of multilayer coatings, both with and without drug-imbued layers.
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Affiliation(s)
- Catarina Cidade do Carmo
- CENIMAT|i3N, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (C.C.d.C.); (M.B.); (J.P.O.); (A.M.)
| | - Miguel Brito
- CENIMAT|i3N, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (C.C.d.C.); (M.B.); (J.P.O.); (A.M.)
| | - J. P. Oliveira
- CENIMAT|i3N, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (C.C.d.C.); (M.B.); (J.P.O.); (A.M.)
| | - Ana Marques
- CENIMAT|i3N, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (C.C.d.C.); (M.B.); (J.P.O.); (A.M.)
- Physics Department, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
| | - Isabel Ferreira
- CENIMAT|i3N, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (C.C.d.C.); (M.B.); (J.P.O.); (A.M.)
| | - Ana Catarina Baptista
- CENIMAT|i3N, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal; (C.C.d.C.); (M.B.); (J.P.O.); (A.M.)
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Abdelgader A, Govender M, Kumar P, Choonara YE. A Novel Intrauterine Device for the Spatio-Temporal Release of Norethindrone Acetate as a Counter-Estrogenic Intervention in the Genitourinary Syndrome of Menopause. Pharmaceutics 2024; 16:587. [PMID: 38794250 PMCID: PMC11124343 DOI: 10.3390/pharmaceutics16050587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/16/2024] [Accepted: 04/24/2024] [Indexed: 05/26/2024] Open
Abstract
The genitourinary syndrome of menopause (GSM) is a widely occurring condition affecting millions of women worldwide. The current treatment of GSM involves the use of orally or vaginally administered estrogens, often with the risk of endometrial hyperplasia. The utilization of progestogens offers a means to counteract the effects of estrogen on the endometrial tissue, decreasing unwanted side effects and improving therapeutic outcomes. In this study, a norethindrone acetate (NETA)-loaded, hollow, cylindrical, and sustained release platform has been designed, fabricated, and optimized for implantation in the uterine cavity as a counter-estrogenic intervention in the treatment of GSM. The developed system, which comprises ethyl cellulose (EC) and polycaprolactone (PCL), has been statistically optimized using a two-factor, two-level factorial design, with the mechanical properties, degradation, swelling, and in vitro drug release of NETA from the device evaluated. The morphological characteristics of the platform were further investigated through scanning electron microscopy in addition to cytocompatibility studies using NIH/3T3 cells. Results from the statistical design highlighted the platform with the highest NETA load and the EC-to-PCL ratio that exhibited favorable release and weight loss profiles. The drug release data for the optimal formulation were best fitted with the Peppas-Sahlin model, implicating both diffusion and polymer relaxation in the release mechanism, with cell viability results noting that the prepared platform demonstrated favorable cytocompatibility. The significant findings of this study firmly establish the developed platform as a promising candidate for the sustained release of NETA within the uterine cavity. This functionality serves as a counter-estrogenic intervention in the treatment of GSM, with the platform holding potential for further advanced biomedical applications.
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Affiliation(s)
| | | | | | - Yahya E. Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa
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Chen Z, Aziz T, Sun H, Ullah A, Ali A, Cheng L, Ullah R, Khan FU. Advances and Applications of Cellulose Bio-Composites in Biodegradable Materials. JOURNAL OF POLYMERS AND THE ENVIRONMENT 2023; 31:2273-2284. [PMID: 0 DOI: 10.1007/s10924-022-02561-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/17/2022] [Indexed: 05/27/2023]
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Terbinafine Nanohybrid: Proposing a Hydrogel Carrying Nanoparticles for Topical Release. Pharmaceutics 2023; 15:pharmaceutics15030841. [PMID: 36986702 PMCID: PMC10056099 DOI: 10.3390/pharmaceutics15030841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/17/2023] [Accepted: 02/22/2023] [Indexed: 03/08/2023] Open
Abstract
A poloxamer 407 (P407)—Casein hydrogel was chosen to carry polycaprolactone nanoparticles carrying terbinafine (PCL-TBH-NP). In this study, terbinafine hydrochloride (TBH) was encapsulated into polycaprolactone (PCL) nanoparticles, which were further incorporated into a poloxamer-casein hydrogel in a different addition order to evaluate the effect of gel formation. Nanoparticles were prepared by the nanoprecipitation technique and characterized by evaluating their physicochemical characteristics and morphology. The nanoparticles had a mean diameter of 196.7 ± 0.7 nm, PDI of 0.07, negative ζ potential (−0.713 mV), high encapsulation efficiency (>98%), and did not show cytotoxic effects in primary human keratinocytes. PCL-NP modulated terbinafine was released in artificial sweat. Rheological properties were analyzed by temperature sweep tests at different addition orders of nanoparticles into hydrogel formation. The rheological behavior of nanohybrid hydrogels showed the influence of TBH-PCL nanoparticles addition in the mechanical properties of the hydrogel and a long-term release of the nanoparticles from it.
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Yang X, Wang Q, Zhang A, Shao X, Liu T, Tang B, Fang G. Strategies for sustained release of heparin: A review. Carbohydr Polym 2022; 294:119793. [PMID: 35868762 DOI: 10.1016/j.carbpol.2022.119793] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/18/2022] [Accepted: 06/25/2022] [Indexed: 11/28/2022]
Abstract
Heparin, a sulfate-containing linear polysaccharide, has proven preclinical and clinical efficacy for a variety of disorders. Heparin, including unfractionated heparin (UFH), low-molecular-weight heparin (LMWH), and ultra-low-molecular-weight heparin (ULMWH), is administered systematically, in the form of a solution in the clinic. However, it is eliminated quickly, due to its short half-life, especially in the case of UFH and LMWH. Frequent administration is required to ensure its therapeutic efficacy, leading to poor patient compliance. Moreover, heparin is used to coat blood-contacting medical devices to avoid thrombosis through physical interaction. However, the short-term durability of heparin on the surface of the stent limits its further application. Various advanced sustained-release strategies have been used to prolong its half-life in vivo as preparation technologies have improved. Herein, we briefly introduce the pharmacological activity and mechanisms of action of heparin. In addition, the strategies for sustained release of heparin are comprehensively summarized.
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Affiliation(s)
- Xuewen Yang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Qiuxiang Wang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Aiwen Zhang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Xinyao Shao
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Tianqing Liu
- NICM Health Research Institute, Western Sydney University, Westmead, NSW 2145, Australia
| | - Bo Tang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China.
| | - Guihua Fang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China.
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Liu M, Zhang S, Ye Y, Liu X, He J, Wei L, Zhang D, Zhou J, Cai J. Robust Electrospinning-Constructed Cellulose Acetate@Anthocyanin Ultrafine Fibers: Synthesis, Characterization, and Controlled Release Properties. Polymers (Basel) 2022; 14:polym14194036. [PMID: 36235984 PMCID: PMC9571753 DOI: 10.3390/polym14194036] [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: 08/15/2022] [Revised: 09/17/2022] [Accepted: 09/22/2022] [Indexed: 12/02/2022] Open
Abstract
Anthocyanin has attracted increasing attention due to its superior biological activity. However, the inherently poor stability of anthocyanin limits its practical applications. In this study, a fast and straightforward method was developed to improve the stability of anthocyanin. Cellulose acetate ultrafine fiber-loaded anthocyanin (CA@Anthocyanin UFs) was prepared by robust electrospinning, and the potential application of cellulose acetate ultrafine fibers (CA UFs) as a bioactive substance delivery system was comprehensively investigated. The experimental results showed that CA@Anthocyanin UFs had protective effects on anthocyanin against temperature, light, and pH. The results of the artificially simulated gastric fluid (pH = 2.0) indicated that the CA@Anthocyanin UFs had a controllable release influence on anthocyanin. A 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging assay suggested that the CA@Anthocyanin UFs still had an excellent antioxidant activity similar to anthocyanin. This work demonstrated the potential application of robust electrospinning-constructed cellulose acetate ultrafine fibers in bioactive substance delivery and controlled release systems, as well as its prospects in green packaging due to the nature of this environmentally friendly composite.
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Affiliation(s)
- Mingzhu Liu
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Shilei Zhang
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Yuanyuan Ye
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Xiaoqing Liu
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Jiangling He
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
- Correspondence: (J.H.); (J.C.)
| | - Lingfeng Wei
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Die Zhang
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Jiaojiao Zhou
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Jie Cai
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
- Correspondence: (J.H.); (J.C.)
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Liu Y, Chen X, Gao Y, Yu DG, Liu P. Elaborate design of shell component for manipulating the sustained release behavior from core–shell nanofibres. J Nanobiotechnology 2022; 20:244. [PMID: 35643572 PMCID: PMC9148457 DOI: 10.1186/s12951-022-01463-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 05/18/2022] [Indexed: 12/15/2022] Open
Abstract
Background The diversified combination of nanostructure and material has received considerable attention from researchers to exploit advanced functional materials. In drug delivery systems, the hydrophilicity and sustained–release drug properties are in opposition. Thus, difficulties remain in the simultaneous improve sustained–release drug properties and increase the hydrophilicity of materials. Methods In this work, we proposed a modified triaxial electrospinning strategy to fabricate functional core–shell fibres, which could elaborate design of shell component for manipulating the sustained-release drug. Cellulose acetate (CA) was designed as the main polymeric matrix, whereas polyethylene glycol (PEG) was added as a hydrophilic material in the middle layer. Cur, as a model drug, was stored in the inner layer. Results Scanning electron microscopy (SEM) results and transmission electron microscopy (TEM) demonstrated that the cylindrical F2–F4 fibres had a clear core–shell structure. The model drug Cur in fibres was verified in an amorphous form during the X-ray diffraction (XRD) patterns, and Fourier transformed infrared spectroscopy (FTIR) results indicated good compatibility with the CA matrix. The water contact angle test showed that functional F2–F4 fibres had a high hydrophilic property in 120 s and the control sample F1 needed over 0.5 h to obtain hydrophilic property. In the initial stage of moisture intrusion into fibres, the quickly dissolved PEG component guided the water molecules and rapidly eroded the internal structure of functional fibres. The good hydrophilicity of F2–F4 fibres brought relatively excellent swelling rate around 4600%. Blank outer layer of functional F2 fibres with 1% PEG created an exciting opportunity for providing a 96 h sustained-release drug profile, while F3 and F4 fibres with over 3% PEG provided a 12 h modified drug release profile to eliminate tailing–off effect. Conclusion Here, the functional F2–F4 fibres had been successfully produced by using the advanced modified triaxial electrospinning nanotechnology with different polymer matrices. The simple strategy in this work has remarkable potential to manipulate hydrophilicity and sustained release of drug carriers, meantime it can also enrich the preparation approaches of functional nanomaterials. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01463-0.
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Addressing the Needs of the Rapidly Aging Society through the Development of Multifunctional Bioactive Coatings for Orthopedic Applications. Int J Mol Sci 2022; 23:ijms23052786. [PMID: 35269928 PMCID: PMC8911303 DOI: 10.3390/ijms23052786] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 02/27/2022] [Accepted: 02/28/2022] [Indexed: 12/15/2022] Open
Abstract
The unprecedented aging of the world's population will boost the need for orthopedic implants and expose their current limitations to a greater extent due to the medical complexity of elderly patients and longer indwelling times of the implanted materials. Biocompatible metals with multifunctional bioactive coatings promise to provide the means for the controlled and tailorable release of different medications for patient-specific treatment while prolonging the material's lifespan and thus improving the surgical outcome. The objective of this work is to provide a review of several groups of biocompatible materials that might be utilized as constituents for the development of multifunctional bioactive coatings on metal materials with a focus on antimicrobial, pain-relieving, and anticoagulant properties. Moreover, the review presents a summary of medications used in clinical settings, the disadvantages of the commercially available products, and insight into the latest development strategies. For a more successful translation of such research into clinical practice, extensive knowledge of the chemical interactions between the components and a detailed understanding of the properties and mechanisms of biological matter are required. Moreover, the cost-efficiency of the surface treatment should be considered in the development process.
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Marques‐Almeida T, Fernandes LC, Correia DM, Tubio CR, Lanceros‐Mendez S, Ribeiro C. Piezoelectric biodegradable poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) based electrospun fiber mats with tailored porosity. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Teresa Marques‐Almeida
- Center of Physics University of Minho Braga Portugal
- CEB ‐ Centre of Biological Engineering University of Minho Braga Portugal
| | - Liliana C. Fernandes
- Center of Physics University of Minho Braga Portugal
- BCMaterials, Basque Center for Materials, Applications and Nanostructures Leioa Spain
| | - Daniela M. Correia
- Center of Physics University of Minho Braga Portugal
- Centre of Chemistry and CQ‐VR University of Trás‐os‐Montes e Alto Douro Vila Real Portugal
| | - Carmen R. Tubio
- BCMaterials, Basque Center for Materials, Applications and Nanostructures Leioa Spain
| | - Senentxu Lanceros‐Mendez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures Leioa Spain
- IKERBASQUE Basque Foundation for Science Bilbao Spain
| | - Clarisse Ribeiro
- Center of Physics University of Minho Braga Portugal
- CEB ‐ Centre of Biological Engineering University of Minho Braga Portugal
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Singh B, Kim K, Park MH. On-Demand Drug Delivery Systems Using Nanofibers. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3411. [PMID: 34947758 PMCID: PMC8707398 DOI: 10.3390/nano11123411] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/14/2021] [Accepted: 12/14/2021] [Indexed: 11/21/2022]
Abstract
On-demand drug-delivery systems using nanofibers are extensively applicable for customized drug release based on target location and timing to achieve the desired therapeutic effects. A nanofiber formulation is typically created for a certain medication and changing the drug may have a significant impact on the release kinetics from the same delivery system. Nanofibers have several distinguishing features and properties, including the ease with which they may be manufactured, the variety of materials appropriate for processing into fibers, a large surface area, and a complex pore structure. Nanofibers with effective drug-loading capabilities, controllable release, and high stability have gained the interest of researchers owing to their potential applications in on-demand drug delivery systems. Based on their composition and drug-release characteristics, we review the numerous types of nanofibers from the most recent accessible studies. Nanofibers are classified based on their mechanism of drug release, as well as their structure and content. To achieve controlled drug release, a suitable polymer, large surface-to-volume ratio, and high porosity of the nanofiber mesh are necessary. The properties of nanofibers for modified drug release are categorized here as protracted, stimulus-activated, and biphasic. Swellable or degradable polymers are commonly utilized to alter drug release. In addition to the polymer used, the process and ambient conditions can have considerable impacts on the release characteristics of the nanofibers. The formulation of nanofibers is highly complicated and depends on many variables; nevertheless, numerous options are available to accomplish the desired nanofiber drug-release characteristics.
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Affiliation(s)
- Baljinder Singh
- Department of Convergence Science, Sahmyook University, Seoul 01795, Korea;
| | - Kibeom Kim
- Convergence Research Center, Nanobiomaterials Institute, Sahmyook University, Seoul 01795, Korea;
| | - Myoung-Hwan Park
- Department of Convergence Science, Sahmyook University, Seoul 01795, Korea;
- Convergence Research Center, Nanobiomaterials Institute, Sahmyook University, Seoul 01795, Korea;
- Department of Chemistry and Life Science, Sahmyook University, Seoul 01795, Korea
- N to B Co., Ltd., Business Incubator Center, Hwarang-ro, Nowon-gu, Seoul 01795, Korea
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