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Arango MC, Vásquez Vásquez L, Parra ACH, Rueda-Mira S, Jaramillo-Quiceno N, Cerisuelo JP, Cháfer A, Álvarez-López C. Evaluation of Sericin/Polyvinyl Alcohol Mixtures for Developing Porous and Stable Structures. Biomimetics (Basel) 2025; 10:27. [PMID: 39851744 PMCID: PMC11762549 DOI: 10.3390/biomimetics10010027] [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: 12/10/2024] [Revised: 12/28/2024] [Accepted: 01/03/2025] [Indexed: 01/26/2025] Open
Abstract
Fibrous by-products, including defective or double cocoons, are obtained during silk processing. These cocoons primarily contain fibroin and sericin (SS) proteins along with minor amounts of wax and mineral salts. In conventional textile processes, SS is removed in the production of smooth, lustrous silk threads, and is typically discarded. However, SS has garnered attention for its antioxidant, antibacterial, biocompatible, and anticancer properties as well as its excellent moisture absorption, making it a promising polymer for biomedical applications. Owing to its functional groups (carboxyl, amino, and hydroxyl), SS can blend and crosslink with other polymers, thereby improving the mechanical properties of sericin-based materials. This study explored the effects of different SS/polyvinyl alcohol (PVA) ratios on porous scaffolds fabricated via freeze-drying, focusing on the mechanical stability, water absorption, and protein release in phosphate-buffered saline (PBS). The scaffold morphology revealed reduced porosity with higher SS content, while increased PVA content led to material folding and layering. A greater PVA content enhanced water absorption, mechanical properties, and thermal stability, although SS release decreased. These results demonstrate that scaffold properties can be tailored by optimizing the SS/PVA ratio to suit specific biomedical applications.
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Affiliation(s)
- Maria C. Arango
- Agroindustrial Research Group, Department of Chemical Engineering, Universidad Pontificia Bolivariana, Cq. 1 #70-01, Medellín 050031, Colombia; (L.V.V.); (A.C.H.P.); (S.R.-M.); (N.J.-Q.); (C.Á.-L.)
- Materials Technology and Sustainability (MATS), Department of Chemical Engineering, Universitat de València, Av. de la Universitat s/n, 46100 Burjassot, Spain
| | - Leander Vásquez Vásquez
- Agroindustrial Research Group, Department of Chemical Engineering, Universidad Pontificia Bolivariana, Cq. 1 #70-01, Medellín 050031, Colombia; (L.V.V.); (A.C.H.P.); (S.R.-M.); (N.J.-Q.); (C.Á.-L.)
| | - Akemy Carolina Homma Parra
- Agroindustrial Research Group, Department of Chemical Engineering, Universidad Pontificia Bolivariana, Cq. 1 #70-01, Medellín 050031, Colombia; (L.V.V.); (A.C.H.P.); (S.R.-M.); (N.J.-Q.); (C.Á.-L.)
| | - Santiago Rueda-Mira
- Agroindustrial Research Group, Department of Chemical Engineering, Universidad Pontificia Bolivariana, Cq. 1 #70-01, Medellín 050031, Colombia; (L.V.V.); (A.C.H.P.); (S.R.-M.); (N.J.-Q.); (C.Á.-L.)
| | - Natalia Jaramillo-Quiceno
- Agroindustrial Research Group, Department of Chemical Engineering, Universidad Pontificia Bolivariana, Cq. 1 #70-01, Medellín 050031, Colombia; (L.V.V.); (A.C.H.P.); (S.R.-M.); (N.J.-Q.); (C.Á.-L.)
| | - Josep Pasqual Cerisuelo
- Materials Technology and Sustainability (MATS), Department of Chemical Engineering, Universitat de València, Av. de la Universitat s/n, 46100 Burjassot, Spain
| | - Amparo Cháfer
- Materials Technology and Sustainability (MATS), Department of Chemical Engineering, Universitat de València, Av. de la Universitat s/n, 46100 Burjassot, Spain
| | - Catalina Álvarez-López
- Agroindustrial Research Group, Department of Chemical Engineering, Universidad Pontificia Bolivariana, Cq. 1 #70-01, Medellín 050031, Colombia; (L.V.V.); (A.C.H.P.); (S.R.-M.); (N.J.-Q.); (C.Á.-L.)
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Yuan Y, Nasri M, Manayi A, Zhang J, Wu C, Jeon TJ, Kang L. Sericin coats of silk fibres, a degumming waste or future material? Mater Today Bio 2024; 29:101306. [PMID: 39534681 PMCID: PMC11554926 DOI: 10.1016/j.mtbio.2024.101306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 10/18/2024] [Accepted: 10/20/2024] [Indexed: 11/16/2024] Open
Abstract
Silk is a fibrous biopolymer with a recorded history in the textile industries for centuries. This fibre is constituted of two different proteins: fibroin and sericin, of which the latter accounting for approximately 20-30 % of the silk mass. Silk sericin (SSER) was previously considered as a waste by-product in silk fibroin extraction. SSER has recently garnered significant scientific interest due to its extensive biological and pharmacological properties. These include antioxidant effects, biocompatibility, low immunogenicity, controlled biodegradability, and the ability to induce cell proliferation. This review covers studies about various aspects of this emerging material, namely, its general morphology, specific structure, molecular weight, features of different layers, and gene sequences. The impact of different extraction methods and the application of extracted SSER based on molecular weight are discussed. Additionally, the characteristic functional groups in the amino acids of sericin facilitate its applications in regenerative medicine, wound healing, drug delivery, textile, environment, and energy, in various forms like hydrogels, films, scaffolds, and conduits. SSER-based materials offer great potentials for multi-functional applications in the upcoming decades, showcasing adaptability for various functional uses and promising future technological advancements.
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Affiliation(s)
- Yunong Yuan
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Pharmacy and Bank Building A15, Science Road, New South Wales 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW, 2006, Australia
| | - Mohammad Nasri
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Pharmacy and Bank Building A15, Science Road, New South Wales 2006, Australia
| | - Azadeh Manayi
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Pharmacy and Bank Building A15, Science Road, New South Wales 2006, Australia
- Medicinal Plants Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Junying Zhang
- Department of TCMs Pharmaceuticals, China Pharmaceutical University, Nanjing, 210009, China
| | - Chunyong Wu
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, 210009, China
| | - Tae-Joon Jeon
- Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
| | - Lifeng Kang
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Pharmacy and Bank Building A15, Science Road, New South Wales 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW, 2006, Australia
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Naser SS, Gupta A, Choudhury A, Yadav A, Sinha A, Kirti A, Singh D, Kujawska M, Kaushik NK, Ghosh A, De S, Verma SK. Biophysical translational paradigm of polymeric nanoparticle: Embarked advancement to brain tumor therapy. Biomed Pharmacother 2024; 179:117372. [PMID: 39208668 DOI: 10.1016/j.biopha.2024.117372] [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: 06/02/2024] [Revised: 08/23/2024] [Accepted: 08/26/2024] [Indexed: 09/04/2024] Open
Abstract
Polymeric nanoparticles have emerged as promising contenders for addressing the intricate challenges encountered in brain tumor therapy due to their distinctive attributes, including adjustable size, biocompatibility, and controlled drug release kinetics. This review comprehensively delves into the latest developments in synthesizing, characterizing, and applying polymeric nanoparticles explicitly tailored for brain tumor therapy. Various synthesis methodologies, such as emulsion polymerization, nanoprecipitation, and template-assisted fabrication, are scrutinized within the context of brain tumor targeting, elucidating their advantages and limitations concerning traversing the blood-brain barrier. Furthermore, strategies pertaining to surface modification and functionalization are expounded upon to augment the stability, biocompatibility, and targeting prowess of polymeric nanoparticles amidst the intricate milieu of the brain microenvironment. Characterization techniques encompassing dynamic light scattering, transmission electron microscopy, and spectroscopic methods are scrutinized to evaluate the physicochemical attributes of polymeric nanoparticles engineered for brain tumor therapy. Moreover, a comprehensive exploration of the manifold applications of polymeric nanoparticles encompassing drug delivery, gene therapy, imaging, and combination therapies for brain tumours is undertaken. Special emphasis is placed on the encapsulation of diverse therapeutics within polymeric nanoparticles, thereby shielding them from degradation and enabling precise targeting within the brain. Additionally, recent advancements in stimuli-responsive and multifunctional polymeric nanoparticles are probed for their potential in personalized medicine and theranostics tailored for brain tumours. In essence, this review furnishes an all-encompassing overview of the recent strides made in tailoring polymeric nanoparticles for brain tumor therapy, illuminating their synthesis, characterization, and multifaceted application.
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Affiliation(s)
- Shaikh Sheeran Naser
- KIIT School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Abha Gupta
- KIIT School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Anmol Choudhury
- KIIT School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Anu Yadav
- KIIT School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Adrija Sinha
- KIIT School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Apoorv Kirti
- KIIT School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Deobrat Singh
- Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala SE-751 20, Sweden
| | | | - Nagendra Kumar Kaushik
- Plasma Bioscience Research Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, South Korea.
| | - Aishee Ghosh
- Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala SE-751 20, Sweden.
| | - Sriparna De
- Department of Allied Health Sciences, Brainware University, 398, Ramkrishnapur Road, Kolkata 700125, India.
| | - Suresh K Verma
- KIIT School of Biotechnology, KIIT University, Bhubaneswar, Odisha 751024, India.
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Santinon C, Borges A, Simões M, Gonçalves ASC, Beppu MM, Vieira MGA. Visible-light photoactivated proanthocyanidin and kappa-carrageenan coating with anti-adhesive properties against clinically relevant bacteria. Int J Biol Macromol 2024; 263:130611. [PMID: 38447837 DOI: 10.1016/j.ijbiomac.2024.130611] [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: 12/20/2023] [Revised: 02/14/2024] [Accepted: 03/02/2024] [Indexed: 03/08/2024]
Abstract
The increase of bacterial resistance to antibiotics is a growing concern worldwide and the search for new therapies could cost billions of dollars and countless lives. Inert surfaces are major sources of contamination due to easier adhesion and formation of bacterial biofilms, hindering the disinfection process. Therefore, the objective of this study was to develop a photoactivatable and anti-adhesive kappa-carrageenan coating using proanthocyanidin as a photosensitizer. The complete reduction (>5-log10 CFU/cm3) of culturable cells of Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa pathogens was achieved after 30 min of exposure to visible light (420 nm; 30 mW/cm2) with 5 % (w/v) of the photosensitizer. Cell membrane damage was confirmed by measuring potassium leakage, epifluorescence microscopy and bacterial motility analysis. Overall, visible light irradiation on coated solid surfaces mediated by proanthocyanidin showed no cytotoxicity and inactivated clinically important pathogens through the generation of reactive oxygen species, inhibiting bacterial initial adhesion. The developed coating is a promising alternative for a wide range of applications related to surface disinfection and food biopreservation.
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Affiliation(s)
- Caroline Santinon
- ªSchool of Chemical Engineering, University of Campinas - UNICAMP, Albert Einstein Av., 500, 13083-852 Campinas, SP, Brazil
| | - Anabela Borges
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, s/n, 4200-465 Porto, Portugal
| | - Manuel Simões
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, s/n, 4200-465 Porto, Portugal
| | - Ariana S C Gonçalves
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, s/n, 4200-465 Porto, Portugal
| | - Marisa Masumi Beppu
- ªSchool of Chemical Engineering, University of Campinas - UNICAMP, Albert Einstein Av., 500, 13083-852 Campinas, SP, Brazil
| | - Melissa Gurgel Adeodato Vieira
- ªSchool of Chemical Engineering, University of Campinas - UNICAMP, Albert Einstein Av., 500, 13083-852 Campinas, SP, Brazil.
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Vieira WT, Nicolini MVS, da Silva MGC, Nascimento LDO, Vieira MGA. κ-Carrageenan/sericin polymer matrix modified with different crosslinking agents and thermal crosslinking: Improved release profile of mefenamic acid. Int J Biol Macromol 2024; 262:129823. [PMID: 38296146 DOI: 10.1016/j.ijbiomac.2024.129823] [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: 09/04/2023] [Revised: 12/27/2023] [Accepted: 01/26/2024] [Indexed: 02/10/2024]
Abstract
The crosslinking of the polymer matrix with compatible macromolecules results in a three-dimensional network structure that offers an enhancement in the controlled release properties of the material. In this sense, this work aimed to improve the release profile of mefenamic acid (MAC) through crosslinking strategies. κ-Carrageenan/sericin crosslinked blend was obtained by covalent and thermal crosslinking and the different formulations were characterized. The gastroresistant potential and release profile were evaluated in the dissolution assay. The effect and characterization of the particles were investigated. Multiple units presented high entrapment efficiency (94.11-104.25), high drug loading (36.50-47.50 %) and adequate particle size (1.34-1.57 mm) with rough surface and visually spherical shape. The Weibull model showed that drug release occurred by relaxation, erosion and Fickian diffusion. Material stability and absence of MAC -polymer interactions were demonstrated by FTIR and thermogravimetric analysis. DSC showed a stable character of MAC in the drug-loaded beads. Moreover, the application studies of κ-Car/Ser/carboxymethylcellulose in the in vitro intestine mode showed that the crosslinked blend increased cell viability (>85 %), while free MAC exhibited a cytotoxic effect. Finally, the crosslinked k-Car/Ser blend MAC -loaded showed promising properties of a sustained release form of anti-inflammatory drug.
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Affiliation(s)
- Wedja Timóteo Vieira
- University of Campinas, School of Chemical Engineering, Albert Einstein Av. 500, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-852, Brazil
| | - Maria Vitória Silva Nicolini
- University of Campinas, School of Chemical Engineering, Albert Einstein Av. 500, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-852, Brazil
| | - Meuris Gurgel Carlos da Silva
- University of Campinas, School of Chemical Engineering, Albert Einstein Av. 500, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-852, Brazil
| | - Laura de Oliveira Nascimento
- University of Campinas, School of Pharmaceutical Sciences, Cândido Portinari, St. 200, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-871, Brazil
| | - Melissa Gurgel Adeodato Vieira
- University of Campinas, School of Chemical Engineering, Albert Einstein Av. 500, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-852, Brazil.
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Vieira WT, da Silva MGC, de Oliveira Nascimento L, Vieira MGA. Development and characterization of crosslinked k-carrageenan/sericin blend with covalent agents or thermal crosslink for indomethacin extended release. Int J Biol Macromol 2023; 246:125558. [PMID: 37392907 DOI: 10.1016/j.ijbiomac.2023.125558] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 06/03/2023] [Accepted: 06/23/2023] [Indexed: 07/03/2023]
Abstract
Modified release of multiparticulate pharmaceutical forms is a key therapeutic strategy to reduce side effects and toxicity caused by high and repeated doses of immediate-release oral drugs. This research focused on the encapsulation of indomethacin (IND) in the crosslinked k-Car/Ser polymeric matrix by covalent and thermal methods to evaluate drug delivery modulation and properties of the crosslinked blend. Therefore, the entrapment efficiency (EE %), drug loading (DL %) and physicochemical properties of the particles were investigated. The particles presented a spherical shape and a rough surface with a mean diameter of 1.38-2.15 mm (CCA) and 1.56-1.86 mm (thermal crosslink). FTIR investigation indicated the presence of IDM in the particles and X-ray pattern showed the maintenance of crystallinity of IDM. The in vitro release in acidic medium (pH 1.2) and phosphate buffer saline solution (pH 6.8) was 1.23-6.81 % and 81-100 %, respectively. Considering the results, the formulations remained stable after 6 months. The Weibull equation was adequately fitted for all formulations and a diffusion mechanism, swelling and relaxation of chain were observed. IDM-loaded k-carrageenan/sericin/CMC increases cell viability (> 75 % for neutral red and > 81 % for MTT). Finally, all formulations present gastro-resistance, pH response and altered release and have the potential to be used as drug delivery careers.
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Affiliation(s)
- Wedja Timóteo Vieira
- University of Campinas, School of Chemical Engineering, Albert Einstein Av., 500, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-852, Brazil
| | - Meuris Gurgel Carlos da Silva
- University of Campinas, School of Chemical Engineering, Albert Einstein Av., 500, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-852, Brazil
| | - Laura de Oliveira Nascimento
- University of Campinas, School of Pharmaceutical Sciences, Cândido Portinari, St. 200, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-871, Brazil
| | - Melissa Gurgel Adeodato Vieira
- University of Campinas, School of Chemical Engineering, Albert Einstein Av., 500, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-852, Brazil.
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Vieira WT, da Silva MGC, de Oliveira Nascimento L, Vieira MGA. k-Carrageenan/sericin-based multiparticulate systems: A novel gastro-resistant polymer matrix for indomethacin delivery. Int J Biol Macromol 2023; 232:123381. [PMID: 36731703 DOI: 10.1016/j.ijbiomac.2023.123381] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 02/01/2023]
Abstract
This study aimed to develop a natural and multiparticulate carrier of k-carrageenan (k-Car) and sericin (Ser) for encapsulation of indomethacin (IND) in order to minimize gastrointestinal effects caused by immediate-release. Increasing the amount of IND in the formulations subtly reduced the entrapment efficiency (EE) and drug loading (DL) due to matrix saturation. Sericin was essential to improve EE and DL when compared to pure k-Car (EE > 90 % and DL > 47 %) with suitable particle sizes (1.3461 ± 0.1891-1.7213 ± 0.1586 mm). The incorporation and integrity of IND in the particles were confirmed by analytical techniques of HPLC, XRD, FTIR, and SEM. Additionally, the k-Car/Ser matrix was pH-responsive with low IND release at pH 1.2 and extended-release at pH 6.8. The Weibull model had an adequate fit to the experimental data with R2aju 0.950.99 and AIC 82.4-24.9, with curves in parabolic profile (b < 1) and indicative of a controlled drug-release mechanism by diffusion. Besides, k-Car/Ser/IND and placebo were not cytotoxic (cell viability > 85 % at 150-600 μM) for the Caco-2 cell line. Therefore, the polymeric matrix is gastro-resistant, stable, and biocompatible to carry indomethacin and deliver it to the intestinal environment.
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Affiliation(s)
- Wedja Timóteo Vieira
- University of Campinas, School of Chemical Engineering, Av. Albert Einstein, 500, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-852, Brazil
| | - Meuris Gurgel Carlos da Silva
- University of Campinas, School of Chemical Engineering, Av. Albert Einstein, 500, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-852, Brazil
| | - Laura de Oliveira Nascimento
- University of Campinas, School of Pharmaceutical Sciences, Rua Cândido Portinari, 200, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-871, Brazil
| | - Melissa Gurgel Adeodato Vieira
- University of Campinas, School of Chemical Engineering, Av. Albert Einstein, 500, Cidade Universitária "Zeferino Vaz", Campinas, SP 13083-852, Brazil.
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Mefenamic acid modified-release by encapsulation in a k-carrageenan/sericin blend. J IND ENG CHEM 2023. [DOI: 10.1016/j.jiec.2023.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Development of a Sericin Hydrogel to Deliver Anthocyanins from Purple Waxy Corn Cob (Zea mays L.) Extract and In Vitro Evaluation of Anti-Inflammatory Effects. Pharmaceutics 2022; 14:pharmaceutics14030577. [PMID: 35335953 PMCID: PMC8951468 DOI: 10.3390/pharmaceutics14030577] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/03/2022] [Accepted: 03/04/2022] [Indexed: 12/04/2022] Open
Abstract
Sericin-alginate hydrogel formulations with purple waxy corn (Zea mays L.) cob extract (PWCC) for topical anti-inflammatory application are developed and evaluated. The physical properties such as viscosity, pH, and anthocyanin release are examined and in vitro anti-inflammatory activities, such as NO inhibition and IL-6, IL-1β, TNF-α, iNOS, and COX-2 expression, are evaluated in LPS-stimulated RAW 264.7 murine macrophages. The sericin-alginate hydrogel is prepared by physical crosslinking through the ionic interaction of the polymers combined with anthocyanin from PWCC at pH 6.5. The hydrogel formulation with 2.00% w/v sericin, 0.20% w/v alginate, and 0.15% w/v PWCC (SN6) shows a suitable viscosity for topical treatment, the highest nitric oxide inhibition (79.43%), no cytotoxicity, and reduced expression of IL-6, IL-1β, and TNF-α mediators. Moreover, the SN6 formulation displays a sustained anthocyanin release over 8–12 h, which correlates with the Korsmeyer–Peppas model. The FT-IR spectrum of SN6 confirmed interaction of the sericin polymer with anthocyanins from PWCC via H-bonding by the shifted peak of amide I and amide III. In addition, the anthocyanin is stable in sericin hydrogels under heating-cooling storage conditions. Therefore, we suggest that this hydrogel formulation has potential as an anti-inflammatory agent. The formulation will be further investigated for in vivo studies and clinical trials in the future.
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da Costa TB, da Silva MGC, Vieira MGA. Biosorption of lanthanum using sericin/alginate/polyvinyl alcohol beads as a natural cation exchanger in a continuous fixed-bed column system. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Babaev M, Lobov A, Shishlov N, Zakharova E, Orlov A, Baymiev A, Kolesov S. Nanoparticles of self-organizing ionic complexes based on a copolymer of N,N′-diallyl-N,N′-dimethylammonium chloride with N-vinylpyrrolidone modified by betulonic acid. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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