1
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Facchin M, Gatto V, Samiolo R, Conca S, Santandrea D, Beghetto V. May 1,3,5-Triazine derivatives be the future of leather tanning? A critical review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 345:123472. [PMID: 38320686 DOI: 10.1016/j.envpol.2024.123472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/03/2024] [Accepted: 01/30/2024] [Indexed: 02/13/2024]
Abstract
Leather is produced by a multi-step process among which the tanning phase is the most relevant, transforming animal skin collagen into a stable, non-putrescible material used to produce a variety of different goods, for the footwear, automotive, garments, and sports industry. Most of the leather produced today is tanned with chromium (III) salts or alternatively with aldehydes or synthetic tannins, generating high environmental concern. Over the years, high exhaustion tanning systems have been developed to reduce the environmental impact of chromium salts, which nevertheless do not avoid the use of metals. Chrome-free alternatives such as aldehydes and phenol based synthetic tannins, are suffering from Reach restrictions due to their toxicity. Thus, the need for environmentally benign and economically sustainable tanning agents is increasingly urgent. In this review, the synthesis, use and tanning mechanism of a new class of tanning agents, 1,3,5-triazines derivatives, have been reported together with organoleptic, physical mechanical characteristics of tanned leather produced. Additionally environmental performance and economic data available for 1,3,5-triazines have been compared with those of a standard basic chromium sulphate tanning process, evidencing the high potentiality for sustainable, metal, aldehyde, and phenol free leather manufacturing.
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Affiliation(s)
- Manuela Facchin
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, Via Torino 155, 30172, Mestre, Italy
| | - Vanessa Gatto
- Crossing S.r.l., Viale della Repubblica 193/b, 31100, Treviso, Italy
| | - Riccardo Samiolo
- Crossing S.r.l., Viale della Repubblica 193/b, 31100, Treviso, Italy
| | - Silvia Conca
- Crossing S.r.l., Viale della Repubblica 193/b, 31100, Treviso, Italy
| | - Domenico Santandrea
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, Via Torino 155, 30172, Mestre, Italy
| | - Valentina Beghetto
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, Via Torino 155, 30172, Mestre, Italy; Crossing S.r.l., Viale della Repubblica 193/b, 31100, Treviso, Italy; Consorzio Interuniversitario per le Reattività Chimiche e La Catalisi (CIRCC), Via C. Ulpiani 27, 70126, Bari, Italy.
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2
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Mandal A, Dhineshkumar E, Murugan E. Collagen Biocomposites Derived from Fish Waste: Doped and Cross-Linked with Functionalized Fe 3O 4 Nanoparticles and Their Comparative Studies with a Green Approach. ACS OMEGA 2023; 8:24256-24267. [PMID: 37457468 PMCID: PMC10339420 DOI: 10.1021/acsomega.3c01106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 06/20/2023] [Indexed: 07/18/2023]
Abstract
Collagen-based nanobiocomposites can reabsorb and are biodegradable. These properties are effectively controlled by the number of cross-links. This study demonstrates an effortless and proficient approach for the functionalization of Fe3O4 NPs for cross-linking collagen obtained from biowaste, viz., fish scales of Lates Calcarifer, a marine origin. The size of Fe3O4 NPs (10-40 nm) was confirmed using particle size analysis. The physico-chemical properties of the aminosilane-coated Fe3O4 NPs cross-linked via succinylated collagen (FFCSC) were characterized using different analytical techniques and compared with succinylated collagen doped with Fe3O4 NPs (FDSC). Thermogravimetric analysis indicates cross-linked product FFCSC to be more stable than the FDSC. Also, the antibacterial effect was more pronounced for FFCSC than for FDSC nanobiocomposites. FFCSC exhibited improved mechanical properties which are essential for materials used for wound dressing purposes. Moreover, the cell viability of fibroblasts (3T3-L1) and their morphology studied by SEM and fluorescence microscopy showed biocompatibility of both FDSC and FFCSC. Thus, the current investigation, involves a waste to wealth approach where the collagen-based nanobiocomposites present an easy way to recycle the biowaste to value-added products using simple and clean methods, which are suitable for use in biomedical and environmental applications.
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Affiliation(s)
- Abhishek Mandal
- Department
of Physical Chemistry, School of Chemical Sciences, University of Madras, Maramalai Campus, Guindy, Chennai 600 025, India
- Department
of Biotechnology, School of Life Sciences, Pondicherry University, R. V. Nagar, Kalapet, Puducherry 605 014, India
| | - Ezhumalai Dhineshkumar
- Dr.
Krishnamoorthi Foundation for Advanced Scientific Research, Vellore 632 001, Tamil Nadu, India
| | - Eagambaram Murugan
- Department
of Physical Chemistry, School of Chemical Sciences, University of Madras, Maramalai Campus, Guindy, Chennai 600 025, India
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3
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Pinilla-Torres AM, Carrión-García PY, Sánchez-Domínguez CN, Gallardo-Blanco H, Sánchez-Domínguez M. Modification of Branched Polyethyleneimine Using Mesquite Gum for Its Improved Hemocompatibility. Polymers (Basel) 2021; 13:2766. [PMID: 34451303 PMCID: PMC8399277 DOI: 10.3390/polym13162766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/06/2021] [Accepted: 08/09/2021] [Indexed: 01/14/2023] Open
Abstract
In the present study, the modification of branched polyethyleneimine (b-PEI) was carried out using mesquite gum (MG) to improve its hemocompatibility to be used in biomedical applications. In the copolymer synthesis process (carboxymethylated mesquite gum grafted polyethyleneimine copolymer (CBX-MG-PEI), an MG carboxymethylation reaction was initially carried out (carboxymethylated mesquite gum (CBX-MG). Subsequently, the functionalization between CBX-MG and b-PEI was carried out using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) and N-hydroxysuccinimide (NHS) as crosslinking agents. The synthesis products were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). Thermogravimetric analysis showed that CBX-MG and CBX-MG-PEI presented a lower decomposition temperature than MG. The CBX-MG-PEI has a high buffer capacity in the pH range of 4 to 7, similar to the b-PEI. In addition, the CBX-MG-PEI showed an improvement in hemocompatibility in comparison with the b-PEI. The results showed a non-hemolytic property at doses lower than 0.1 µg/mL (CBX-MG-PEI). These results allow us to propose that this copolymer be used in transfection, polymeric nanoparticles, and biomaterials due to its physicochemical and hemocompatibility properties.
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Affiliation(s)
- Ana M. Pinilla-Torres
- Grupo de Química Coloidal e Interfacial Aplicada a Nanomateriales y Formulaciones, Centro de Investigación en Materiales Avanzados, S.C. (CIMAV, S.C.), Unidad Monterrey, Apodaca 66628, Mexico;
| | - Paola Y. Carrión-García
- Departamento de Bioquímica y Medicina Molecular, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico; (P.Y.C.-G.); (C.N.S.-D.)
| | - Celia N. Sánchez-Domínguez
- Departamento de Bioquímica y Medicina Molecular, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico; (P.Y.C.-G.); (C.N.S.-D.)
| | - Hugo Gallardo-Blanco
- Departamento de Genética, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico
| | - Margarita Sánchez-Domínguez
- Grupo de Química Coloidal e Interfacial Aplicada a Nanomateriales y Formulaciones, Centro de Investigación en Materiales Avanzados, S.C. (CIMAV, S.C.), Unidad Monterrey, Apodaca 66628, Mexico;
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4
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Orasugh JT, Dutta S, Das D, Pal C, Zaman A, Das S, Dutta K, Banerjee R, Ghosh SK, Chattopadhyay D. Sustained release of ketorolac tromethamine from poloxamer 407/cellulose nanofibrils graft nanocollagen based ophthalmic formulations. Int J Biol Macromol 2019; 140:441-453. [DOI: 10.1016/j.ijbiomac.2019.08.143] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/14/2019] [Accepted: 08/16/2019] [Indexed: 12/20/2022]
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5
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Beghetto V, Gatto V, Conca S, Bardella N, Scrivanti A. Polyamidoamide Dendrimers and Cross-Linking Agents for Stabilized Bioenzymatic Resistant Metal-Free Bovine Collagen. Molecules 2019; 24:molecules24193611. [PMID: 31591356 PMCID: PMC6803940 DOI: 10.3390/molecules24193611] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 09/30/2019] [Accepted: 10/02/2019] [Indexed: 01/27/2023] Open
Abstract
The work reports the use of polyamidoamine dendrimers (PAMAM) and a cross-linking agent, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide/N-hydroxysuccinimide (EDC/NHS) or 4-(4,6-dimethoxy[1,3,5]triazin-2-yl)-4-methyl-morpholinium chloride (DMTMM), for the thermal stabilization of dermal bovine collagen. The efficiency of EDC/NHS/PAMAM and DMTMM/PAMAM in the cross-linking of collagen is correlated to the increase of the collagen shrinkage temperature (Ts), measured by differential scanning calorimetry (DSC). An alternative enzymatic protocol was adopted to measure the degradability of EDC/NHS/PAMAM tanned hides; these data are correlated to the thermal stability values measured by DSC. In the presence of PAMAMs, EDC/NHS provides very high stabilization of bovine dermal collagen, giving Ts of up to 95 °C, while DMTMM achieves lower stabilization. Preliminary tanning tests carried out in best reaction conditions show that EDC/NHS/PAMAM could be an interesting, environmentally-sustainable tanning system which is completely free of metals, formaldehyde, and phenols. Two new unreported dendrimeric species were synthesized and employed.
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Affiliation(s)
- Valentina Beghetto
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari Venice, Via Torino 155, 30172 Mestre (Venice), Italy.
- Crossing Ltd., Viale della Repubblica 193/b, 31100 Treviso, Italy.
| | - Vanessa Gatto
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari Venice, Via Torino 155, 30172 Mestre (Venice), Italy.
- Crossing Ltd., Viale della Repubblica 193/b, 31100 Treviso, Italy.
| | - Silvia Conca
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari Venice, Via Torino 155, 30172 Mestre (Venice), Italy.
| | - Noemi Bardella
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari Venice, Via Torino 155, 30172 Mestre (Venice), Italy.
| | - Alberto Scrivanti
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari Venice, Via Torino 155, 30172 Mestre (Venice), Italy.
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6
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Wu Q, Shan T, Zhao M, Mai S, Gu L. The inhibitory effect of carboxyl-terminated polyamidoamine dendrimers on dentine host-derived matrix metalloproteinases in vitro in an etch-and-rinse adhesive system. ROYAL SOCIETY OPEN SCIENCE 2019; 6:182104. [PMID: 31824679 PMCID: PMC6837191 DOI: 10.1098/rsos.182104] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Accepted: 09/08/2019] [Indexed: 06/10/2023]
Abstract
The biomimetic remineralization of collagen fibrils has increased interest in restoring the demineralized dentine generated by dental caries. Carboxyl-terminated polyamidoamine dendrimers (PAMAM-COOH), hyperbranched polymeric macromolecules, can act as non-collagenous proteins to induce biomimetic remineralization on a dentine organic matrix. However, in vivo remineralization is an extremely time-consuming process; before complete remineralization, demineralized dentine collagen fibrils are susceptible to degradation by host-derived matrix metalloproteinases (MMPs). Therefore, we examined the effect of fourth-generation PAMAM-COOH (G4-PAMAM-COOH) on the collagenolytic activities of endogenous MMPs, the interaction between G4-PAMAM-COOH and demineralized dentine collagen and the influence of G4-PAMAM-COOH pre-treatment on resin-dentine bonding. G4-PAMAN-COOH not only inhibited exogenous soluble rhMMP9 but also hampered the proteolytic activities of dentine collagen-bound MMPs. Cooperated with the results of G4-PAMAM-COOH absorption and desorption, FTIR spectroscopy provided evidence for the exclusive electrostatic interaction rather than hydrogen or covalent bonding between G4-PAMAM-COOH and dentine collagen. Furthermore, G4-PAMAM-COOH pre-treatment showed no damage to resin-dentine bonding because it did not significantly decrease the elastic modulus of the demineralized dentine, degree of conversion, penetration of the adhesive into the dentinal tubules or ultimate tensile strength. Thus, G4-PAMAM-COOH can effectively inactivate MMPs, retard the enzymolysis of collagen by MMPs and scarcely influence the application of resin-dentine bonding.
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Affiliation(s)
| | | | | | | | - Lisha Gu
- Author for correspondence: Lisha Gu e-mail:
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7
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PAMAM (generation 4) incorporated gelatin 3D matrix as an improved dermal substitute for skin tissue engineering. Colloids Surf B Biointerfaces 2017; 155:128-134. [DOI: 10.1016/j.colsurfb.2017.04.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 02/26/2017] [Accepted: 04/03/2017] [Indexed: 11/18/2022]
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8
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Bax DV, Davidenko N, Gullberg D, Hamaia SW, Farndale RW, Best SM, Cameron RE. Fundamental insight into the effect of carbodiimide crosslinking on cellular recognition of collagen-based scaffolds. Acta Biomater 2017; 49:218-234. [PMID: 27915017 DOI: 10.1016/j.actbio.2016.11.059] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 10/26/2016] [Accepted: 11/28/2016] [Indexed: 01/31/2023]
Abstract
Research on the development of collagen constructs is extremely important in the field of tissue engineering. Collagen scaffolds for numerous tissue engineering applications are frequently crosslinked with 1-ethyl-3-(3-dimethylaminopropyl-carbodiimide hydrochloride (EDC) in the presence of N-hydroxy-succinimide (NHS). Despite producing scaffolds with good biocompatibility and low cellular toxicity the influence of EDC/NHS crosslinking on the cell interactive properties of collagen has been overlooked. Here we have extensively studied the interaction of model cell lines with collagen I-based materials after crosslinking with different ratios of EDC in relation to the number of carboxylic acid residues on collagen. Divalent cation-dependent cell adhesion, via integrins α1β1, α2β1, α10β1 and α11β1, were sensitive to EDC crosslinking. With increasing EDC concentration, this was replaced with cation-independent adhesion. These results were replicated using purified recombinant I domains derived from integrin α1 and α2 subunits. Integrin α2β1-mediated cell spreading, apoptosis and proliferation were all heavily influenced by EDC crosslinking of collagen. Data from this rigorous study provides an exciting new insight that EDC/NHS crosslinking is utilising the same carboxylic side chain chemistry that is vital for native-like integrin-mediated cell interactions. Due to the ubiquitous usage of EDC/NHS crosslinked collagen for biomaterials fabrication this data is essential to have a full understanding in order to ensure optimized collagen-based material performance. STATEMENT OF SIGNIFICANCE Carbodiimide stabilised collagen is employed extensively for the fabrication of biologically active materials. Despite this common usage, the effect of carbodiimide crosslinking on cell-collagen interactions is unclear. Here we have found that carbodiimide crosslinking of collagen inhibits native-like, whilst increasing non-native like, cellular interactions. We propose a mechanistic model in which carbodiimide modifies the carboxylic acid groups on collagen that are essential for cell binding. As such we feel that this research provides a crucial, long awaited, insight into the bioactivity of carbodiimide crosslinked collagen. Through the ubiquitous use of collagen as a cellular substrate we feel that this is fundamental to a wide range of research activity with high impact across a broad range of disciplines.
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9
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Clarke D, Molinaro S, Tyuftin A, Bolton D, Fanning S, Kerry JP. Incorporation of commercially-derived antimicrobials into gelatin-based films and assessment of their antimicrobial activity and impact on physical film properties. Food Control 2016. [DOI: 10.1016/j.foodcont.2015.12.037] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Kim HJ, Lee S, Yun HW, Yin XY, Kim SH, Choi BH, Kim YJ, Kim MS, Min BH. In vivo degradation profile of porcine cartilage-derived extracellular matrix powder scaffolds using a non-invasive fluorescence imaging method. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 27:177-90. [PMID: 26679994 DOI: 10.1080/09205063.2015.1120262] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
We present a non-invasive fluorescence method for imaging of scaffold degradation in vivo by quantifying the degradation of porcine cartilage-derived extracellular matrix powder (PCP).Three-dimensional porous scaffolds should be biocompatible and bioresorbable, with a controllable degradation and resorption rate to match tissue growth. However, in vivo scaffold degradation and tissue ingrowth processes are not yet fully understood. Unfortunately, current analysis methods require animal sacrifice and scaffold destruction for the quantification of scaffold degradation and cannot monitor the situation in real time. In this study, Cy3, a fluorescent dye, was used for visualizing PCP and a real-time degradation profile was obtained quantitatively by a non-invasive method using an imaging system in which the reduction in fluorescence intensity depended on PCP scaffold degradation. Real-time PCP scaffold degradation was confirmed through changes in the volume and morphology of the scaffold using micro-computed tomography and microscopy. Our results suggest that extracellular matrix degradation was induced by collagen degradation because of the binding between Cy3 and collagen. This non-invasive real-time monitoring system for scaffold degradation will increase our understanding of in vivo matrix and/or scaffold degradation.
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Affiliation(s)
- Hyeon Joo Kim
- a Cell Therapy Center, Ajou University Medical Center , Suwon-si , Republic of Korea
| | - Soyeon Lee
- b Department of Molecular Science & Technology , Ajou University , Suwon-si , Republic of Korea
| | - Hee-Woong Yun
- b Department of Molecular Science & Technology , Ajou University , Suwon-si , Republic of Korea
| | - Xiang Yun Yin
- c Department of Orthopaedic Surgery , School of Medicine, Ajou University , Suwon-si , Republic of Korea
| | - Soon Hee Kim
- a Cell Therapy Center, Ajou University Medical Center , Suwon-si , Republic of Korea
| | - Byung Hyune Choi
- d Department of Biomedical Sciences , College of Medicine, Inha University , Incheon , Republic of Korea
| | - Young Jick Kim
- a Cell Therapy Center, Ajou University Medical Center , Suwon-si , Republic of Korea
| | - Moon Suk Kim
- b Department of Molecular Science & Technology , Ajou University , Suwon-si , Republic of Korea
| | - Byoung-Hyun Min
- a Cell Therapy Center, Ajou University Medical Center , Suwon-si , Republic of Korea.,b Department of Molecular Science & Technology , Ajou University , Suwon-si , Republic of Korea.,c Department of Orthopaedic Surgery , School of Medicine, Ajou University , Suwon-si , Republic of Korea
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11
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Mandal A, Sekar S, Chandrasekaran N, Mukherjee A, Sastry TP. Synthesis, characterization and evaluation of collagen scaffolds crosslinked with aminosilane functionalized silver nanoparticles: in vitro and in vivo studies. J Mater Chem B 2015; 3:3032-3043. [DOI: 10.1039/c4tb02124j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
This work presents a novel approach for functionalization of silver nanoparticles and cross-linking them with collagen to form FSCSC scaffolds suitable for clinical applications.
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Affiliation(s)
- Abhishek Mandal
- Centre for Nano-Biotechnology
- VIT University
- Vellore 632014
- India
- Bio-Products Laboratory
| | - Santhanam Sekar
- Bio-Products Laboratory
- Council of Scientific and Industrial Research (CSIR)-Central Leather Research Institute
- Chennai
- India
| | | | | | - Thotapalli P. Sastry
- Bio-Products Laboratory
- Council of Scientific and Industrial Research (CSIR)-Central Leather Research Institute
- Chennai
- India
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12
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Plonska-Brzezinska ME, Bobrowska DM, Sharma A, Rodziewicz P, Tomczyk M, Czyrko J, Brzezinski K. Triple helical collagen-like peptide interactions with selected polyphenolic compounds. RSC Adv 2015. [DOI: 10.1039/c5ra15469c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Because collagen is the most abundant component of connective tissue, it is an excellent biomaterial in numerous medical applications.
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Affiliation(s)
- M. E. Plonska-Brzezinska
- Institute of Chemistry
- Faculty of Chemistry and Biology
- University of Bialystok
- 15-399 Bialystok
- Poland
| | - D. M. Bobrowska
- Institute of Chemistry
- Faculty of Chemistry and Biology
- University of Bialystok
- 15-399 Bialystok
- Poland
| | - A. Sharma
- Laboratoire de Chimie Moléculaire
- Ecole Polytechnique
- CNRS
- 91128 Palaiseau Cedex
- France
| | - P. Rodziewicz
- Institute of Chemistry
- Faculty of Chemistry and Biology
- University of Bialystok
- 15-399 Bialystok
- Poland
| | - M. Tomczyk
- Department of Pharmacognosy
- Faculty of Pharmacy
- Medical University of Bialystok
- 15-230 Bialystok
- Poland
| | - J. Czyrko
- Institute of Chemistry
- Faculty of Chemistry and Biology
- University of Bialystok
- 15-399 Bialystok
- Poland
| | - K. Brzezinski
- Institute of Chemistry
- Faculty of Chemistry and Biology
- University of Bialystok
- 15-399 Bialystok
- Poland
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13
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Affiliation(s)
- Stephen A. Madison
- Unilever R&D, 40 Merritt Boulevard, Trumbull, Connecticut 06611, United States
| | - Joseph O. Carnali
- Unilever R&D, 40 Merritt Boulevard, Trumbull, Connecticut 06611, United States
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14
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do Nascimento ASF, Gondim ACS, Cajazeiras JB, Correia JLA, Pires ADF, do Nascimento KS, da Silva ALC, Nagano CS, Assreuy AMS, Cavada BS. Purification and partial characterization of a novel lectin fromDioclea lasiocarpaMart seeds with vasodilator effects. J Mol Recognit 2012. [DOI: 10.1002/jmr.2222] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Antônia Sâmia F. do Nascimento
- Laboratório de Moléculas Biologicamente Ativas (Biomol-Lab), Department of Biochemistry and Molecular Biology; Federal University of Ceará; Av. Humberto Monte s/n, Bloco 907, Lab. 1075, Campus do Pici; Zip code 60.400-970; Fortaleza; CE; Brazil
| | - Ana Cláudia S. Gondim
- Laboratório de Moléculas Biologicamente Ativas (Biomol-Lab), Department of Biochemistry and Molecular Biology; Federal University of Ceará; Av. Humberto Monte s/n, Bloco 907, Lab. 1075, Campus do Pici; Zip code 60.400-970; Fortaleza; CE; Brazil
| | - João B. Cajazeiras
- Laboratório de Moléculas Biologicamente Ativas (Biomol-Lab), Department of Biochemistry and Molecular Biology; Federal University of Ceará; Av. Humberto Monte s/n, Bloco 907, Lab. 1075, Campus do Pici; Zip code 60.400-970; Fortaleza; CE; Brazil
| | - Jorge Luis A. Correia
- Laboratório de Moléculas Biologicamente Ativas (Biomol-Lab), Department of Biochemistry and Molecular Biology; Federal University of Ceará; Av. Humberto Monte s/n, Bloco 907, Lab. 1075, Campus do Pici; Zip code 60.400-970; Fortaleza; CE; Brazil
| | - Alana de F. Pires
- Laboratório de Fisio-farmacologia da Inflamação (LAFFIN), Institute of Biomedical Sciences; State University of Ceará; Av. Paranjana 1700; Zip code 60740-903; Fortaleza; CE; Brazil
| | - Kyria S. do Nascimento
- Laboratório de Moléculas Biologicamente Ativas (Biomol-Lab), Department of Biochemistry and Molecular Biology; Federal University of Ceará; Av. Humberto Monte s/n, Bloco 907, Lab. 1075, Campus do Pici; Zip code 60.400-970; Fortaleza; CE; Brazil
| | - André Luis C. da Silva
- Laboratório de Biotecnologia Molecular (LabBMol), Department of Biochemistry and Molecular Biology; Federal University of Ceará; Av. Humberto Monte s/n, Bloco 907, Lab. 1090, Campus do Pici; Zip code 60.440-970; Fortaleza; CE; Brazil
| | - Celso S. Nagano
- Laboratório de Espectrometria de Massa aplicado a Proteínas (LEMAP); Federal University of Ceará; Av. Humberto Monte s/n, Bloco 825, Campus do Pici; Zip code 60.455-970; Fortaleza; CE; Brazil
| | - Ana Maria S. Assreuy
- Laboratório de Fisio-farmacologia da Inflamação (LAFFIN), Institute of Biomedical Sciences; State University of Ceará; Av. Paranjana 1700; Zip code 60740-903; Fortaleza; CE; Brazil
| | - Benildo S. Cavada
- Laboratório de Moléculas Biologicamente Ativas (Biomol-Lab), Department of Biochemistry and Molecular Biology; Federal University of Ceará; Av. Humberto Monte s/n, Bloco 907, Lab. 1075, Campus do Pici; Zip code 60.400-970; Fortaleza; CE; Brazil
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15
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Vidal BDC, Mello MLS. Collagen type I amide I band infrared spectroscopy. Micron 2010; 42:283-9. [PMID: 21134761 DOI: 10.1016/j.micron.2010.09.010] [Citation(s) in RCA: 248] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Revised: 09/16/2010] [Accepted: 09/25/2010] [Indexed: 12/23/2022]
Abstract
Collagen fiber structure and organization have been found to vary in different tendon types. Differences have been reported in the FT-IR spectra of the amide I band of collagen-containing structures. In the present study, the FT-IR spectral characteristics of the amide I band of the bovine flexor tendon and the extended rat tail tendon were compared by using the diamond attenuated total reflectance technique. The objective was to associate FT-IR spectral characteristics in tendons with their different collagen fiber supraorganization and biomechanical properties. Nylon 6 and poly-L-lysine were used as polyamide models. Each of these materials was found to exhibit molecular order and crystallinity, as revealed by their birefringence. The following FT-IR parameters were evaluated: amide I band profile, absorption peaks and areas, and the 1655 cm⁻¹/1690 cm⁻¹ absorbance ratio. The amide I area and the 1655 cm⁻¹/1690 cm⁻¹ absorbance ratio were significantly higher for the bovine flexor tendon, indicating that its collagen fibers are richer in pyridinoline-type cross-linking, proline and/or hydroxyproline and H-bonding, and that these fibers are more packed and supraorganizationally ordered than those in the rat tail tendon. This conclusion is additionally supported by differences in collagen solubility and biochemical/biomechanical properties of the tendons.
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Affiliation(s)
- Benedicto de Campos Vidal
- Department of Anatomy, Cell Biology, and Physiology and Biophysics, Institute of Biology, University of Campinas (UNICAMP), 13083-863 Campinas (SP), Brazil.
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Ward J, Kelly J, Wang W, Zeugolis DI, Pandit A. Amine functionalization of collagen matrices with multifunctional polyethylene glycol systems. Biomacromolecules 2010; 11:3093-101. [PMID: 20942484 DOI: 10.1021/bm100898p] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A method to functionalize collagen-based biomaterials with free amine groups was established in an attempt to improve their potential for tethering of bioactive molecules. Collagen sponges were incorporated with amine-terminated multifunctional polyethylene glycol (PEG) derivatives after N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide and N-hydroxysuccinimide (EDC/NHS) cross-linking. The extent of the incorporation of different amounts and different numbers of active moieties of amine-terminated PEG systems into the collagen scaffolds was evaluated using ninhydrin assay, Fourier transform infrared spectrophotometry (FTIR), collagenase degradation assay, denaturation temperature measurements, and in vitro cell studies. A 3% 8-arm amine-terminated PEG was found to be the minimum required effective concentration to functionalize EDC/NHS stabilized collagen scaffolds. EDC/NHS stabilized scaffolds treated with 3% 8-arm amine-terminated PEG exhibited significantly improved denaturation temperature and resistance to collagenase degradation over non-cross-linked scaffolds (p < 0.002). Biological evaluation using 3T3 cells demonstrated that the produced scaffolds facilitated maintenance of the cells' morphology, metabolic activity, and ability to proliferate in vitro. Overall, our results indicate that amine-terminated PEG systems can be used as means to enhance the functionality of collagenous structures.
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Affiliation(s)
- John Ward
- Department of Plastic and Reconstructive Surgery, University Hospital of Galway, Galway, Ireland, and Network of Excellence for Functional Biomaterials (NFB), National University of Ireland, Galway (NUI Galway), Galway, Ireland
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Henry JA, Pandit A. Perspective on biomaterials used in the surgical treatment of morbid obesity. Obes Rev 2009; 10:324-32. [PMID: 19243516 DOI: 10.1111/j.1467-789x.2008.00551.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Morbid obesity is defined as having a body mass index greater than or equal to 40.0 kg m(-2), or 37.0 kg m(-2) with comorbidities. Bariatric surgery remains the most effective treatment for morbid obesity. Bariatric procedures such as sleeve gastrectomy, vertical banded gastroplasty and adjustable gastric banding all generate excess body-weight loss typically over 3-5 years. The biomaterials used during these procedures, namely silicone, polypropylene, expanded polytetrafluoroethylene and titanium, are all non-degradable biomaterials. Hence, their presence in vivo exceeds the functional requirement of an implant to treat morbid obesity. Accordingly, research into non-invasive and reversible surgical procedures has increased, particularly in light of the dramatic increase in paediatric obesity. Tissue engineering is an alternative approach to treat morbid obesity, as it incorporates both engineering and biological principles into the design and development of an implant to surgically treat morbid obesity. It is hypothesized that a biodegradable polymer to treat morbid obesity could be developed to effectively promote excess weight loss. The aim of this review is to discuss morbid obesity with regards to its aetiology, prevalence and current modalities of treatment. Specifically, the shortcomings of the biomaterials currently used to surgically treat morbid obesity shall be reviewed, and alternative biomaterials shall be proposed.
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Affiliation(s)
- J A Henry
- National Centre for Biomedical Engineering Science, National University of Ireland, Galway, Ireland
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