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Baron RI, Duceac IA, Morariu S, Bostănaru-Iliescu AC, Coseri S. Hemostatic Cryogels Based on Oxidized Pullulan/Dopamine with Potential Use as Wound Dressings. Gels 2022; 8:726. [PMID: 36354634 PMCID: PMC9689722 DOI: 10.3390/gels8110726] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 07/30/2023] Open
Abstract
The impetus for research into hydrogels based on selectively oxidized polysaccharides has been stimulated by the diversity of potential biomedical applications. Towards the development of a hemostatic wound dressing in this study, we creatively combined the (hemi)acetal and Schiff base bonds to prepare a series of multifunctional cryogels based on dialdehyde pullulan and dopamine. The designed structures were verified by NMR and FTIR spectroscopy. Network parameters and dynamic sorption studies were correlated with environmental scanning microscopy results, thus confirming the successful integration of the two components and the opportunities for finely tuning the structure-properties balance. The viscoelastic parameters (storage and loss moduli, complex and apparent viscosities, zero shear viscosity, yield stress) and the structural recovery capacity after applying a large deformation were determined and discussed. The mechanical stability and hemostatic activity suggest that the optimal combination of selectively oxidized pullulan and dopamine can be a promising toolkit for wound management.
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Affiliation(s)
- Raluca Ioana Baron
- Department of Polyaddition and Photochemistry, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Ioana A. Duceac
- Department of Polyaddition and Photochemistry, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Simona Morariu
- Department of Natural Polymers, Bioactive and Biocompatible Materials, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Andra-Cristina Bostănaru-Iliescu
- Laboratory of Antimicrobial Chemotherapy, “Ion Ionescu de la Brad” University of Life Sciences, 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Sergiu Coseri
- Department of Polyaddition and Photochemistry, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
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Costa KAD, Catarina AS, Leal ICR, Sathler PC, de Oliveira D, de Oliveira AASC, Cansian RL, Dallago RM, Zeni J, Paroul N. Enzymatic synthesis of ascorbyl oleate and evaluation of biological activities. Food Res Int 2022; 161:111851. [DOI: 10.1016/j.foodres.2022.111851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 08/12/2022] [Accepted: 08/21/2022] [Indexed: 11/30/2022]
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Abstract
The history of biomaterials dates back to the mists of time: human beings had always used exogenous materials to facilitate wound healing and try to restore damaged tissues and organs. Nowadays, a wide variety of materials are commercially available and many others are under investigation to both maintain and restore bodily functions. Emerging clinical needs forced the development of new biomaterials, and lately discovered biomaterials allowed for the performing of new clinical applications. The definition of biomaterials as materials specifically conceived for biomedical uses was raised when it was acknowledged that they have to possess a fundamental feature: biocompatibility. At first, biocompatibility was mainly associated with biologically inert substances; around the 1970s, bioactivity was first discovered and the definition of biomaterials was consequently extended. At present, it also includes biologically derived materials and biological tissues. The present work aims at walking across the history of biomaterials, looking towards the scientific literature published on this matter. Finally, some current applications of biomaterials are briefly depicted and their future exploitation is hypothesized.
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Todesco M, Zardin C, Iop L, Palmosi T, Capaldo P, Romanato F, Gerosa G, Bagno A. Hybrid membranes for the production of blood contacting surfaces: physicochemical, structural and biomechanical characterization. Biomater Res 2021; 25:26. [PMID: 34376256 PMCID: PMC8353781 DOI: 10.1186/s40824-021-00227-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 08/01/2021] [Indexed: 11/18/2022] Open
Abstract
Background Due to the shortage of organs’ donors that limits biological heart transplantations, mechanical circulatory supports can be implanted in case of refractory end-stage heart failure to replace partially (Ventricular Assist Device, VAD) or completely (Total Artificial Heart, TAH) the cardiac function. The hemocompatibility of mechanical circulatory supports is a fundamental issue that has not yet been fully matched; it mostly depends on the nature of blood-contacting surfaces. Methods In order to obtain hemocompatible materials, a pool of hybrid membranes was fabricated by coupling a synthetic polymer (polycarbonate urethane, commercially available in two formulations) with a decellularized biological tissue (porcine pericardium). To test their potential suitability as candidate materials for realizing the blood-contacting surfaces of a novel artificial heart, hybrid membranes have been preliminarily characterized in terms of physicochemical, structural and mechanical properties. Results Our results ascertained that the hybrid membranes are properly stratified, thus allowing to expose their biological side to blood and their polymeric surface to the actuation system of the intended device. From the biomechanical point of view, the hybrid membranes can withstand deformations up to more than 70 % and stresses up to around 8 MPa. Conclusions The hybrid membranes are suitable for the construction of the ventricular chambers of innovative mechanical circulatory support devices.
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Affiliation(s)
- Martina Todesco
- Department of Industrial Engineering, University of Padua, via Marzolo 9, 35131, Padova, Italy.,L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via Giustiniani 2, 35128, Padova, Italy
| | - Carlo Zardin
- Department of Industrial Engineering, University of Padua, via Marzolo 9, 35131, Padova, Italy
| | - Laura Iop
- Department of Cardiac, Thoracic Vascular Sciences and Public Health, University of Padova, via Giustiniani 2, 35128, Padova, Italy
| | - Tiziana Palmosi
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via Giustiniani 2, 35128, Padova, Italy.,Department of Cardiac, Thoracic Vascular Sciences and Public Health, University of Padova, via Giustiniani 2, 35128, Padova, Italy
| | - Pietro Capaldo
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via Giustiniani 2, 35128, Padova, Italy.,Department of Physics and Astronomy 'G. Galilei', University of Padova, via Marzolo 8, 35131, Padova, Italy.,CNR-INFM TASC IOM National Laboratory, S.S. 14 Km 163.5, 34012, Basovizza, Trieste, Italy
| | - Filippo Romanato
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via Giustiniani 2, 35128, Padova, Italy.,Department of Physics and Astronomy 'G. Galilei', University of Padova, via Marzolo 8, 35131, Padova, Italy.,CNR-INFM TASC IOM National Laboratory, S.S. 14 Km 163.5, 34012, Basovizza, Trieste, Italy
| | - Gino Gerosa
- L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via Giustiniani 2, 35128, Padova, Italy.,Department of Cardiac, Thoracic Vascular Sciences and Public Health, University of Padova, via Giustiniani 2, 35128, Padova, Italy
| | - Andrea Bagno
- Department of Industrial Engineering, University of Padua, via Marzolo 9, 35131, Padova, Italy. .,L.i.f.e.L.a.b. Program, Consorzio per la Ricerca Sanitaria (CORIS), Veneto Region, Via Giustiniani 2, 35128, Padova, Italy.
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