Ara es mostren els items 1-18 de 18

  • Bacteria-responsive multilayer coatings comprising polycationic nanospheres for bacteria biofilm prevention on urinary catheters 

    Francesko, Antonio; Macedo Fernandes, Margarida Maria; Ivanova, Kristina Dimitrova; Tzanov, Tzanko (2016-01-21)
    Article
    Accés restringit per política de l'editorial
    This work reports on the development of infection-preventive coatings on silicone urinary catheters that contain in their structure and release on demand antibacterial polycationic nanospheres. Polycationic aminocellulose ...
  • Effect of thiol-functionalisation on chitosan antibacterial activity: interaction with a bacterial membrane model 

    Macedo Fernandes, Margarida Maria; Francesko, Antonio; Torrent Burgués, Juan; Tzanov, Tzanko (2013-01-12)
    Article
    Accés restringit per política de l'editorial
    The antibacterial activity of chitosan modified with the thiol-containing 2-iminothiolane HCl (TC-IMI) and N-acetyl- L -cysteine (TC-NAC) was studied by Langmuir film balance technique using a dipalmitoylphos- phatidylglycerol ...
  • Enzymatic functionalization of cork surface with antimicrobial hybrid biopolymer/silver nanoparticles 

    Francesko, Antonio; Blandon, Lucas; Vázquez, Mario; Petkova Petkova, Petya Stoyanova; Morató Farreras, Jordi; Pfeifer, Annett; Heinze, Thomas; Mendoza Gómez, Ernesto; Tzanov, Tzanko (2015-05-13)
    Article
    Accés obert
    Laccase-assisted assembling of hybrid biopolymer-silver nanoparticles and cork matrices into an antimicrobial material with potential for water remediation is herein described. Amino-functional biopolymers were first used ...
  • Enzyme-assisted formation of hybrid biopolymer hydrogels incorporating active phenolic nanospheres 

    Petkova Petkova, Petya Stoyanova; Francesko, Antonio; Tzanov, Tzanko (2015-02-01)
    Article
    Accés restringit per política de l'editorial
    This work is about the synthesis of hybrid nanocomposite hydrogels comprising a thiolated chitosan platform that incorporates epigallocatechin gallate nanospheres as active polyphenolic agents for wound healing applications. ...
  • Escherichia coli and pseudomonas aeruginosa eradication by nano-penicillin G 

    Macedo Fernandes, Margarida Maria; Ivanova, Kristina Dimitrova; Francesko, Antonio; Rivera, Diana; Torrent Burgués, Juan; Mendoza Gómez, Ernesto; Tzanov, Tzanko (2016-06-09)
    Article
    Accés restringit per política de l'editorial
    The transformation of penicillin G into nano/micro-sized spheres (nanopenicillin) using sonochemical technology was explored as a novel tool for the eradication of Gram-negative bacteria and their biofilms. Known by its ...
  • Functional biopolymer-based matrices for modulation of chronic wound enzyme activities 

    Francesko, Antonio; Soares da Costa, Diana; Reis, Rui L.; Pashkuleva, Iva; Tzanov, Tzanko (2012-10-13)
    Article
    Accés restringit per política de l'editorial
    Collagen, collagen/hyaluronic acid (HA) and collagen/HA/chitosan (CS) sponges loaded with epigallocatechin gallate (EGCG), catechin (CAT) and gallic acid (GA) were developed and evaluated as active chronic wound dressings. ...
  • GAGs-thiolated chitosan assemblies for chronic wounds treatment: control of enzyme activity and cell attachment 

    Francesko, Antonio; Soares da Costa, Diana; Lisboa, Patricia; Reis, Rui L.; Tzanov, Tzanko; Iva Hristova, Pashkuleva (2012-04-20)
    Article
    Accés restringit per política de l'editorial
    Multilayered polyelectrolyte coatings comprising thiolated chitosan (TC) and glycosaminoglycans (GAGs), chondroitin sulphate and hyaluronic acid, were built using a layer-by-layer approach. The surface activity of these ...
  • Inhibition of deleterious chronic wound enzymes with plant polyphenols 

    Díaz González, María; Rocasalbas Lozano, Guillem; Francesko, Antonio; Touriño Eirín, Sonia; Torres, Josep Lluis; Tzanov, Tzanko (2012-01-18)
    Article
    Accés restringit per política de l'editorial
    The chronic wound environment is characterized by high concentrations of reactive oxygen species (ROS) and elevated levels of myeloperoxidase (MPO) and collagenases, together impairing the healing process. Therefore, the ...
  • Laccase-assisted formation of bioactive chitosan/gelatin hydrogel stabilized with plant polyphenols 

    Rocasalbas Lozano, Guillem; Francesko, Antonio; Touriño Eirín, Sonia; Fernández Francos, Xavier; Guebitz, Georg M.; Tzanov, Tzanko (2012-11-02)
    Article
    Accés restringit per política de l'editorial
    Laccase-assisted simultaneous cross-linking and functionalization of chitosan/gelatin blends with phenolic compounds from Hamamelis virginiana was investigated for the development of bioactive hydrogel dressings. The ...
  • Multifuncional biopolymer-bases materials for modulatig the activites of chromic wound enzymes 

    Francesko, Antonio (Universitat Politècnica de Catalunya, 2012-11-29)
    Tesi
    Accés obert
    This thesis focuses on the development of active multifunctional dressing materials and nanoparticle formulations with suitable exploitation characteristics for chronic wounds treatment. Chronic wounds a growing clinical ...
  • One-step sonochemical preparation of redox-responsive nanocapsules for glutathione mediated RNA release 

    Francesko, Antonio; Macedo Fernandes, Margarida Maria; Tzanov, Tzanko; Perelshtein, Illana; Benisvy Aharonovich, Lena; Gedanken, Aharon (Royal Society of Chemistry, 2014-07-09)
    Article
    Accés restringit per política de l'editorial
    Efficient RNA delivery to targeted cells requires the use of stable interactive carriers that provide RNA protection during the extracellular transit and trigger release once internalised. One strategy to avoid the premature ...
  • Quorum-quenching and matrix-degrading enzymes in multilayer coatings synergistically prevent bacterial biofilm formation on urinary catheters 

    Ivanova, Kristina Dimitrova; Macedo Fernandes, Margarida Maria; Francesko, Antonio; Mendoza Gómez, Ernesto; Tzanov, Tzanko (2015-12-02)
    Article
    Accés obert
    Bacteria often colonize in-dwelling medical devices and grow as complex biofilm communities of cells embedded in a self-produced extracellular polymeric matrix, which increases their resistance to antibiotics and the host ...
  • Sensor materials for the detection of human neutrophil elastase and cathepsin G activity in wound ¿uid 

    Wehrschuetz-Sigl, Eva; Guebitz, Georg M.; Van der Palen, Job; Hasmann, Andrea; Gewessler, Ulrike; Hulla, Elisabet; Schneider, Konstantin P.; Binder, Barbara; Francesko, Antonio; Tzanov, Tzanko; Schintler, Michael (2011-04-13)
    Article
    Accés restringit per política de l'editorial
    Human neutrophil elastase (HNE) and cathepsin G (CatG) are involved in the pathogenesis of a number of inflammatory disorders. These serine proteinases are released by neutrophils and monocytes in case of infection. Wound ...
  • Simultaneous sonochemical-enzymatic coating of medical textiles with antibacterial ZnO nanoparticles 

    Petkova Petkova, Petya Stoyanova; Francesko, Antonio; Perelshtein, Ilana; Gedanken, Aharon; Tzanov, Tzanko (2016-03-01)
    Article
    Accés restringit per política de l'editorial
    The antimicrobial finishing is a must for production of medical textiles, aiming at reducing the bioburden in clinical wards and consequently decreasing the risk of hospital-acquired infections. This work reports for the ...
  • Size and aging effects on antimicrobial efficiency of silver nanoparticles coated on polyamide fabrics activated by atmospheric DBD plasma 

    Zille, Andrea; Macedo Fernandes, Margarida Maria; Francesko, Antonio; Tzanov, Tzanko; Fernandes Sousa, Marta; Oliveira, Fernando R.; Almeida Torres, Luís; Amorim Lago, Teresa; Carneiro, Noémia; Esteves, Maria Fernanda; Souto, António Pedro (2015-06-09)
    Article
    Accés obert
    This work studies the surface characteristics, antimicrobial activity, and aging effect of plasma-pretreated polyamide 6,6 (PA66) fabrics coated with silver nanoparticles (AgNPs), aiming to identify the optimum size of ...
  • Sonochemical coating of textiles with hybrid ZnO/chitosan antimicrobial nanoparticles 

    Petkova Petkova, Petya Stoyanova; Francesko, Antonio; Macedo Fernandes, Margarida Maria; Mendoza Gómez, Ernesto; Perelshtein, Ilana; Aharon, Gedanken; Tzanov, Tzanko (2014-01-09)
    Article
    Accés restringit per política de l'editorial
    Textiles are good substrates for growth of microorg anisms especially under moisture and temperature conditions found in hospitals. Microbia l shedding from the body occurs continuously at contact of the patient with ...
  • Sonochemically processed cationic nanocapsules: Efficient antimicrobials with membrane disturbing capacity 

    Fernandes, Margarida M.; Francesko, Antonio; Torrent Burgués, Juan; Carrión Fité, Francisco Javier; Macedo Fernandes, Margarida Maria; Tzanov, Tzanko; Heinze, Thomas (2014-03-08)
    Article
    Accés restringit per política de l'editorial
    Bacterial-mediated diseases are a major healthcare concern worldwide due to the rapid spread of antibiotic-resistant bacteria. One strategy to manage the bacterial infections while avoiding the emergence of resistant strains ...
  • Tannic Acid NPs - Synthesis and immobilization on to a solid surface in a one – step process and their antibacterial and anti-inflammatory properties 

    Perelshtein, Ilana; Ruderman, Elena; Francesko, Antonio; Fernandes, Margarida M.; Tzanov, Tzanko; Macedo Fernandes, Margarida Maria; Gedanken, Aharon (2013-12-14)
    Article
    Accés restringit per política de l'editorial
    Tannic acid nanoparticles were synthesized from an aqueous solution without the use of stabilizers via a sonochemical process. In order to avoid the dissolution of the formed nanoparticles, the sonochemical reaction was ...