1
|
Matijaković Mlinarić N, Marušić K, Brkić AL, Marciuš M, Fabijanić TA, Tomašić N, Selmani A, Roblegg E, Kralj D, Stanić I, Njegić Džakula B, Kontrec J. Microplastics encapsulation in aragonite: efficiency, detection and insight into potential environmental impacts. Environ Sci Process Impacts 2024. [PMID: 38623703 DOI: 10.1039/d4em00004h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Plastic pollution in aquatic ecosystems has become a significant problem especially microplastics which can encapsulate into the skeletons of organisms that produce calcium carbonates, such as foraminifera, molluscs and corals. The encapsulation of microplastics into precipitated aragonite, which in nature builds the coral skeleton, has not yet been studied. It is also not known how the dissolved organic matter, to which microplastics are constantly exposed in aquatic ecosystems, affects the encapsulation of microplastics into aragonite and how such microplastics affect the mechanical properties of aragonite. We performed aragonite precipitation experiments in artificial seawater in the presence of polystyrene (PS) and polyethylene (PE) microspheres, untreated and treated with humic acid (HA). The results showed that the efficiency of encapsulating PE and PE-HA microspheres in aragonite was higher than that for PS and PS-HA microspheres. The mechanical properties of resulting aragonite changed after the encapsulation of microplastic particles. A decrease in the hardness and indentation modulus of the aragonite samples was observed, and the most substantial effect occurred in the case of PE-HA microspheres encapsulation. These findings raise concerns about possible changes in the mechanical properties of the exoskeleton and endoskeleton of calcifying marine organisms such as corals and molluscs due to the incorporation of pristine microplastics and microplastics exposed to dissolved organic matter.
Collapse
Affiliation(s)
| | - Katarina Marušić
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | | | - Marijan Marciuš
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Tamara Aleksandrov Fabijanić
- The Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia
| | - Nenad Tomašić
- Department of Geology, Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb, Croatia
| | - Atiđa Selmani
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, 8010 Graz, Austria
| | - Eva Roblegg
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, 8010 Graz, Austria
| | - Damir Kralj
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Ivana Stanić
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Branka Njegić Džakula
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Jasminka Kontrec
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| |
Collapse
|
2
|
Matijaković Mlinarić N, Wawrzaszek B, Kowalska K, Selmani A, Učakar A, Vidmar J, Kušter M, Van de Velde N, Trebše P, Sever Škapin A, Jerman I, Abram A, Zore A, Roblegg E, Bohinc K. Poly(Allylamine Hydrochloride) and ZnO Nanohybrid Coating for the Development of Hydrophobic, Antibacterial, and Biocompatible Textiles. Nanomaterials (Basel) 2024; 14:570. [PMID: 38607105 PMCID: PMC11013899 DOI: 10.3390/nano14070570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/13/2024]
Abstract
In healthcare facilities, infections caused by Staphylococcus aureus (S. aureus) from textile materials are a cause for concern, and nanomaterials are one of the solutions; however, their impact on safety and biocompatibility with the human body must not be neglected. This study aimed to develop a novel multilayer coating with poly(allylamine hydrochloride) (PAH) and immobilized ZnO nanoparticles (ZnO NPs) to make efficient antibacterial and biocompatible cotton, polyester, and nylon textiles. For this purpose, the coated textiles were characterized with profilometry, contact angles, and electrokinetic analyzer measurements. The ZnO NPs on the textiles were analyzed by scanning electron microscopy and inductively coupled plasma mass spectrometry. The antibacterial tests were conducted with S. aureus and biocompatibility with immortalized human keratinocyte cells. The results demonstrated successful PAH/ZnO coating formation on the textiles, demonstrating weak hydrophobic properties. Furthermore, PAH multilayers caused complete ZnO NP immobilization on the coated textiles. All coated textiles showed strong growth inhibition (2-3-log reduction) in planktonic and adhered S. aureus cells. The bacterial viability was reduced by more than 99%. Cotton, due to its better ZnO NP adherence, demonstrated a slightly higher antibacterial performance than polyester and nylon. The coating procedure enables the binding of ZnO NPs in an amount (<30 µg cm-2) that, after complete dissolution, is significantly below the concentration causing cytotoxicity (10 µg mL-1).
Collapse
Affiliation(s)
- Nives Matijaković Mlinarić
- Faculty of Health Sciences, University of Ljubljana, Zdravstvena Pot 5, 1000 Ljubljana, Slovenia; (N.M.M.); (P.T.); (A.Z.)
| | - Barbara Wawrzaszek
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Pl. Maria Curie-Skłodowska 3, 20-031 Lublin, Poland; (B.W.); (K.K.)
| | - Klaudia Kowalska
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Pl. Maria Curie-Skłodowska 3, 20-031 Lublin, Poland; (B.W.); (K.K.)
| | - Atiđa Selmani
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, 8010 Graz, Austria; (A.S.); (E.R.)
| | - Aleksander Učakar
- Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia; (A.U.); (J.V.); (M.K.); (A.A.)
| | - Janja Vidmar
- Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia; (A.U.); (J.V.); (M.K.); (A.A.)
| | - Monika Kušter
- Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia; (A.U.); (J.V.); (M.K.); (A.A.)
| | - Nigel Van de Velde
- National Institute of Chemistry, Hajdrihova Ulica 19, 1000 Ljubljana, Slovenia; (N.V.d.V.); (I.J.)
| | - Polonca Trebše
- Faculty of Health Sciences, University of Ljubljana, Zdravstvena Pot 5, 1000 Ljubljana, Slovenia; (N.M.M.); (P.T.); (A.Z.)
| | - Andrijana Sever Škapin
- Slovenian National Building and Civil Engineering Institute, Dimčeva Ulica 12, 1000 Ljubljana, Slovenia;
- Faculty of Polymer Technology—FTPO, Ozare 19, 2380 Slovenj Gradec, Slovenia
| | - Ivan Jerman
- National Institute of Chemistry, Hajdrihova Ulica 19, 1000 Ljubljana, Slovenia; (N.V.d.V.); (I.J.)
| | - Anže Abram
- Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia; (A.U.); (J.V.); (M.K.); (A.A.)
| | - Anamarija Zore
- Faculty of Health Sciences, University of Ljubljana, Zdravstvena Pot 5, 1000 Ljubljana, Slovenia; (N.M.M.); (P.T.); (A.Z.)
| | - Eva Roblegg
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, 8010 Graz, Austria; (A.S.); (E.R.)
| | - Klemen Bohinc
- Faculty of Health Sciences, University of Ljubljana, Zdravstvena Pot 5, 1000 Ljubljana, Slovenia; (N.M.M.); (P.T.); (A.Z.)
| |
Collapse
|
3
|
Najmi Z, Mlinarić NM, Scalia AC, Cochis A, Selmani A, Učakar A, Abram A, Zore A, Delač I, Jerman I, Van de Velde N, Vidmar J, Bohinc K, Rimondini L. Antibacterial evaluation of different prosthetic liner textiles coated by CuO nanoparticles. Heliyon 2024; 10:e23849. [PMID: 38192822 PMCID: PMC10772625 DOI: 10.1016/j.heliyon.2023.e23849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 12/03/2023] [Accepted: 12/13/2023] [Indexed: 01/10/2024] Open
Abstract
Prosthetic liners are mainly used as an interface between residual limbs and prosthetic sockets to minimize physical and biological damage to soft tissue. However, the closed and moist conditions within liners and the amputee's skin provide a suitable environment for bacterial growth to cause infections. This study aimed to coat a comprehensive variant material with copper oxide nanoparticles (CuO NPs) and compare their surface analysis and antibacterial properties. These materials were covered with CuO NPs solution at a concentration of 70 μg mL-1 to achieve this purpose. After drying, their surface characteristics were analyzed by measuring zeta potential, contact angle, surface roughness, and fiber arrangement. Cu-released concentration from the coatings into the acetate buffer solution by inductively coupled plasma mass spectrometry indicated that lycra and nylon quickly released Cu ions to concentrations up to ∼0.2 μg mL-1 after 24 h, causing low metabolic activity of human bone-marrow mesenchymal stem cells (bMSC) in the indirect assay. Antibacterial activity of the coated specimens was evaluated by infecting their surfaces with the Gram-positive bacteria Staphylococcus epidermidis, reporting a significant ∼40 % reduction of metabolic activity for x-dry after 24 h; in addition, the number of viable bacterial colonies adhered to the surface of this material was reduced by ∼23 times in comparison with non-treated x-dry that were visually confirmed by scanning electron microscope. In conclusion, CuO NPs x-dry shows optimistic results to pursue further experiments due to its slow speed of Cu release and prolonged antibacterial activity, as well as its compatibility with human cells.
Collapse
Affiliation(s)
- Ziba Najmi
- Department of Health Sciences, Center for Translational Research on Autoimmune and Allergic Diseases-CAAD, Università Del Piemonte Orientale UPO, Corso Trieste 15/A, 28100, Novara, NO, Italy
| | | | - Alessandro Calogero Scalia
- Department of Health Sciences, Center for Translational Research on Autoimmune and Allergic Diseases-CAAD, Università Del Piemonte Orientale UPO, Corso Trieste 15/A, 28100, Novara, NO, Italy
| | - Andrea Cochis
- Department of Health Sciences, Center for Translational Research on Autoimmune and Allergic Diseases-CAAD, Università Del Piemonte Orientale UPO, Corso Trieste 15/A, 28100, Novara, NO, Italy
| | - Atiđa Selmani
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, 8010, Graz, Austria
| | | | - Anže Abram
- Institut Jožef Stefan, Jamova Cesta 39, 1000, Ljubljana, Slovenia
| | - Anamarija Zore
- University of Ljubljana, Zdravstvena Pot, 1000, Ljubljana, Slovenia
| | - Ida Delač
- Institute of Physics, Bijenička Cesta 46, 10000, Zagreb, Croatia
| | - Ivan Jerman
- National Institute of Chemistry, Hajdrihova Ulica 19, 1000, Ljubljana, Slovenia
| | - Nigel Van de Velde
- National Institute of Chemistry, Hajdrihova Ulica 19, 1000, Ljubljana, Slovenia
| | - Janja Vidmar
- Department of Environmental Sciences, Jožef Stefan Institute, Jamova Cesta 39, 1000, Ljubljana, Slovenia
| | - Klemen Bohinc
- University of Ljubljana, Zdravstvena Pot, 1000, Ljubljana, Slovenia
| | - Lia Rimondini
- Department of Health Sciences, Center for Translational Research on Autoimmune and Allergic Diseases-CAAD, Università Del Piemonte Orientale UPO, Corso Trieste 15/A, 28100, Novara, NO, Italy
| |
Collapse
|
4
|
Selmani A, Siboulet B, Špadina M, Foucaud Y, Dražić G, Radatović B, Korade K, Nemet I, Kovačević D, Dufrêche JF, Bohinc K. Cation Adsorption in TiO 2 Nanotubes: Implication for Water Decontamination. ACS Appl Nano Mater 2023; 6:12711-12725. [PMID: 37533543 PMCID: PMC10391741 DOI: 10.1021/acsanm.3c00916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/13/2023] [Indexed: 08/04/2023]
Abstract
TiO2 nanotubes constitute very promising nanomaterials for water decontamination by the removal of cations. We combined a range of experimental techniques from structural analyses to measurements of the properties of aqueous suspensions of nanotubes, with (i) continuous solvent modeling and (ii) quantum DFT-based simulations to assess the adsorption of Cs+ on TiO2 nanotubes and to predict the separation of metal ions. The methodology is set to be operable under realistic conditions, which, in this case, include the presence of CO2 that needs to be treated as a substantial contaminant, both in experiments and in models. The mesoscopic model, based on the Poisson-Boltzmann equation and surface adsorption equilibrium, predicts that H+ ions are the charge-determining species, while Cs+ ions are in the diffuse layer of the outer surface with a significant contribution only at high concentrations and high pH. The effect of the size of nanotubes in terms of the polydispersity and the distribution of the inner and outer radii is shown to be a third-order effect that is very small when the nanotube layer is not very thick (ranging from 1 to 2 nm). Besides, DFT-based molecular dynamics simulations demonstrate that, for protonation, the one-site and successive association assumption is correct, while, for Cs+ adsorption, the size of the cation is important and the adsorption sites should be carefully defined.
Collapse
Affiliation(s)
- Atiđa Selmani
- Division
of Physical Chemistry, Ruđer Bošković
Institute, Bijenička
Cesta 54, 10000 Zagreb, Croatia
- Pharmaceutical
Technology & Biopharmacy, Institute
of Pharmaceutical Sciences, University of Graz, A-8010, Graz, Austria
| | - Bertrand Siboulet
- ICSM,
Université Montpellier, CEA, CNRS, ENSCM, 30207 Bagnols-sur-Ceze, France
| | - Mario Špadina
- Division
of Physical Chemistry, Ruđer Bošković
Institute, Bijenička
Cesta 54, 10000 Zagreb, Croatia
- Faculty
of Health Sciences, University of Ljubljana, Zdravstvena 5, SI-1000 Ljubljana, Slovenia
| | - Yann Foucaud
- ICSM,
Université Montpellier, CEA, CNRS, ENSCM, 30207 Bagnols-sur-Ceze, France
| | - Goran Dražić
- Laboratory
for Materials Chemistry, National Institute
of Chemistry, Hajdrihova ulica 19, SI-1000 Ljubljana, Slovenia
| | | | - Karla Korade
- Faculty of
Science, University of Zagreb, Horvatovac 102A, 10 000 Zagreb, Croatia
| | - Ivan Nemet
- Faculty of
Science, University of Zagreb, Horvatovac 102A, 10 000 Zagreb, Croatia
| | - Davor Kovačević
- Faculty of
Science, University of Zagreb, Horvatovac 102A, 10 000 Zagreb, Croatia
| | | | - Klemen Bohinc
- Faculty
of Health Sciences, University of Ljubljana, Zdravstvena 5, SI-1000 Ljubljana, Slovenia
| |
Collapse
|
5
|
Selmani A, Jeitler R, Auinger M, Tetyczka C, Banzer P, Kantor B, Leitinger G, Roblegg E. Investigation of the Influence of Wound-Treatment-Relevant Buffer Systems on the Colloidal and Optical Properties of Gold Nanoparticles. Nanomaterials (Basel) 2023; 13:1878. [PMID: 37368307 DOI: 10.3390/nano13121878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/28/2023]
Abstract
Biocompatible gold nanoparticles (AuNPs) are used in wound healing due to their radical scavenging activity. They shorten wound healing time by, for example, improving re-epithelialization and promoting the formation of new connective tissue. Another approach that promotes wound healing through cell proliferation while inhibiting bacterial growth is an acidic microenvironment, which can be achieved with acid-forming buffers. Accordingly, a combination of these two approaches appears promising and is the focus of the present study. Here, 18 nm and 56 nm gold NP (Au) were prepared with Turkevich reduction synthesis using design-of-experiments methodology, and the influence of pH and ionic strength on their behaviour was investigated. The citrate buffer had a pronounced effect on the stability of AuNPs due to the more complex intermolecular interactions, which was also confirmed by the changes in optical properties. In contrast, AuNPs dispersed in lactate and phosphate buffer were stable at therapeutically relevant ionic strength, regardless of their size. Simulation of the local pH distribution near the particle surface also showed a steep pH gradient for particles smaller than 100 nm. This suggests that the healing potential is further enhanced by a more acidic environment at the particle surface, making this strategy a promising approach.
Collapse
Affiliation(s)
- Atiđa Selmani
- Pharmaceutical Technology & Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, 8010 Graz, Austria
| | - Ramona Jeitler
- Pharmaceutical Technology & Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, 8010 Graz, Austria
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, 8010 Graz, Austria
| | - Michael Auinger
- Institute of Chemical Technologies and Analytics, TU Wien, Getreidemarkt 9/164, 1060 Vienna, Austria
| | - Carolin Tetyczka
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, 8010 Graz, Austria
| | - Peter Banzer
- Institute of Physics, NAWI Graz, University of Graz, Universitätsplatz 5, 8010 Graz, Austria
| | - Brian Kantor
- Institute of Physics, NAWI Graz, University of Graz, Universitätsplatz 5, 8010 Graz, Austria
| | - Gerd Leitinger
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria
| | - Eva Roblegg
- Pharmaceutical Technology & Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, 8010 Graz, Austria
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, 8010 Graz, Austria
| |
Collapse
|
6
|
Kiss T, Ambrus R, Abdelghafour MM, Zeiringer S, Selmani A, Roblegg E, Budai-Szűcs M, Janovák L, Lőrinczi B, Deák Á, Bernkop-Schnürch A, Katona G. Preparation and detailed characterization of the thiomer chitosan-cysteine as a suitable mucoadhesive excipient for nasal powders. Int J Pharm 2022; 626:122188. [PMID: 36089213 DOI: 10.1016/j.ijpharm.2022.122188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/04/2022] [Accepted: 09/05/2022] [Indexed: 10/14/2022]
Abstract
The therapeutic application of nasal powders requires the development of novel mucoadhesive excipients. Thiolated polymers exhibit significant potential for this purpose based on their increased mucoadhesion attributable to the formation of disulfide bonds between the polymer and mucus surface. A chitosan-cysteine (chit-cyst) conjugate was synthesized using 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and N-hydroxysuccinimide in aqueous solution. The synthetic yield and synthesis conditions were optimized, and the efficiency of the reaction was evaluated. Rheological measurements revealed that the polymer derivative exhibited increased mucoadhesive properties in comparison to chitosan powder. To characterize the polymer, a novel purity investigation method was developed and verified to investigate the residual l-cysteine content. The results revealed that l-cysteine was not detectable in the resultant polymer matrix. Based on the cytotoxicity studies, chit-cyst was found to be safe for nasal application. Thereafter, nasal powder formulations were prepared using the polymer and the antiparkinsonian drug levodopa methyl ester hydrochloride by freeze-drying to investigate their nasal applicability. Based on the in vitro studies, these powders might be suitable for reducing the off periods of Parkinson's disease because of their expected higher in vivo mucoadhesion.
Collapse
Affiliation(s)
- Tamás Kiss
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary
| | - Rita Ambrus
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary
| | - Mohamed M Abdelghafour
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla sqr. 1, H-6720 Szeged, Hungary; Department of Chemistry, Zagazig University, EG-44519 Zagazig, Egypt
| | - Scarlett Zeiringer
- Institute of Pharmaceutical Science, Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Universitätsplatz 1, A-8010 Graz, Austria
| | - Atiđa Selmani
- Institute of Pharmaceutical Science, Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Universitätsplatz 1, A-8010 Graz, Austria
| | - Eva Roblegg
- Institute of Pharmaceutical Science, Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Universitätsplatz 1, A-8010 Graz, Austria
| | - Mária Budai-Szűcs
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary
| | - László Janovák
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla sqr. 1, H-6720 Szeged, Hungary
| | - Bálint Lőrinczi
- Institute of Pharmaceutical Chemistry, University of Szeged, Szeged, Eötvös str. 6, H-6720 Szeged, Hungary
| | - Ágota Deák
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla sqr. 1, H-6720 Szeged, Hungary
| | - Andreas Bernkop-Schnürch
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80-22, A-6020 Innsbruck, Austria
| | - Gábor Katona
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary.
| |
Collapse
|
7
|
Jeitler R, Glader C, Tetyczka C, Zeiringer S, Absenger-Novak M, Selmani A, Fröhlich E, Roblegg E. Investigation of Cellular Interactions of Lipid-Structured Nanoparticles With Oral Mucosal Epithelial Cells. Front Mol Biosci 2022; 9:917921. [PMID: 35677878 PMCID: PMC9170126 DOI: 10.3389/fmolb.2022.917921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/04/2022] [Indexed: 11/13/2022] Open
Abstract
Lipid-based nanosystems enable intracellular delivery of drugs in the oral cavity for the treatment of local diseases. To rationally design such systems, suitable matrix compositions and particle properties need to be identified, and manufacturing technologies that allow reproducible production have to be applied. This is a prerequisite for the reliable and predictable performance of in-vitro biological studies. Here, we showed that solid lipid nanoparticles (SLN, palmitic acid) and nanostructured lipid carriers (NLC, palmitic acid and oleic acid in different ratios) with a size of 250 nm, a negative zeta potential, and a polydispersity index (PdI) of less than 0.3 can be reproducibly prepared by high-pressure homogenization using quality by design and a predictive model. SLN and NLC were colloidally stable after contact with physiological fluid and did not form agglomerates. The in-vitro studies clearly showed that besides particle size, surface charge and hydrophobicity, matrix composition had a significant effect. More specifically, the addition of the liquid lipid oleic acid increased the cellular uptake capacity without changing the underlying uptake mechanism. Regardless of the matrix composition, caveolin-mediated endocytosis was the major route of uptake, which was confirmed by particle localization in the endoplasmic reticulum. Thus, this work provides useful insights into the optimal composition of lipid carrier systems to enhance the intracellular uptake capacity of drugs into the oral mucosa.
Collapse
Affiliation(s)
- R. Jeitler
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
| | - C. Glader
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
- Research Center Pharmaceutical Engineering GmbH, Graz, Austria
| | - C. Tetyczka
- Research Center Pharmaceutical Engineering GmbH, Graz, Austria
| | - S. Zeiringer
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
| | - M. Absenger-Novak
- Center for Medical Research, Medical University of Graz, Graz, Austria
| | - A. Selmani
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
| | - E. Fröhlich
- Center for Medical Research, Medical University of Graz, Graz, Austria
| | - E. Roblegg
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
- Research Center Pharmaceutical Engineering GmbH, Graz, Austria
- *Correspondence: E. Roblegg,
| |
Collapse
|
8
|
Selmani A, Kovačević D, Bohinc K. Nanoparticles: From synthesis to applications and beyond. Adv Colloid Interface Sci 2022; 303:102640. [PMID: 35358806 DOI: 10.1016/j.cis.2022.102640] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/04/2022] [Accepted: 03/06/2022] [Indexed: 12/18/2022]
Abstract
In modern-day research, nanoparticles (size < 100nm) are an indispensable tool for various applications, especially in the field of biomedicine. Although enormous efforts have been made to understand the properties and specificities of nanoparticles, many questions are still not answered and the new ones arise. In this review we summarize current trends in the nanoparticle synthesis and characterization and interpret the stability of nanoparticles in various media from aqueous solutions to biological milieu important for the in vitro and in vivo studies. To get more detailed insight into nanoparticle charging properties and interactions of nanoparticles with interfaces the theoretical models are presented. Finally, the overview of nanoparticle applications is given and the future prospects are discussed.
Collapse
Affiliation(s)
- Atiđa Selmani
- Department of Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, 8010 Graz, Austria.
| | - Davor Kovačević
- Division of Physical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Klemen Bohinc
- Faculty of Health Sciences, University of Ljubljana, Zdravstvena pot 5, SI-1000 Ljubljana, Slovenia.
| |
Collapse
|
9
|
Selmani A, Seibert E, Tetyczka C, Kuehnelt D, Vidakovic I, Kornmueller K, Absenger-Novak M, Radatović B, Vinković Vrček I, Leitinger G, Fröhlich E, Bernkop-Schnürch A, Roblegg E, Prassl R. Thiolated Chitosan Conjugated Liposomes for Oral Delivery of Selenium Nanoparticles. Pharmaceutics 2022; 14:pharmaceutics14040803. [PMID: 35456640 PMCID: PMC9032237 DOI: 10.3390/pharmaceutics14040803] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/01/2022] [Accepted: 04/05/2022] [Indexed: 02/01/2023] Open
Abstract
This study aimed to design a hybrid oral liposomal delivery system for selenium nanoparticles (Lip-SeNPs) to improve the bioavailability of selenium. Thiolated chitosan, a multifunctional polymer with mucoadhesive properties, was used for surface functionalization of Lip-SeNPs. Selenium nanoparticle (SeNP)-loaded liposomes were manufactured by a single step microfluidics-assisted chemical reduction and assembling process. Subsequently, chitosan-N-acetylcysteine was covalently conjugated to the preformed Lip-SeNPs. The Lip-SeNPs were characterized in terms of composition, morphology, size, zeta potential, lipid organization, loading efficiency and radical scavenging activity. A co-culture system (Caco-2:HT29-MTX) that integrates mucus secreting and enterocyte-like cell types was used as a model of the human intestinal epithelium to determine adsorption, mucus penetration, release and transport properties of Lip-SeNPs in vitro. Thiolated Lip-SeNPs were positively charged with an average size of about 250 nm. Thiolated Lip-SeNPs tightly adhered to the mucus layer without penetrating the enterocytes. This finding was consistent with ex vivo adsorption studies using freshly excised porcine small intestinal tissues. Due to the improved mucoadhesion and retention in a simulated microenvironment of the small intestine, thiolated Lip-SeNPs might be a promising tool for oral selenium delivery.
Collapse
Affiliation(s)
- Atiđa Selmani
- Department of Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, 8010 Graz, Austria; (A.S.); (C.T.); (E.R.)
| | - Elisabeth Seibert
- Division of Biophysics, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria; (E.S.); (I.V.); (K.K.)
| | - Carolin Tetyczka
- Department of Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, 8010 Graz, Austria; (A.S.); (C.T.); (E.R.)
| | - Doris Kuehnelt
- Institute of Chemistry, Analytical Chemistry, NAWI Graz, University of Graz, 8010 Graz, Austria;
| | - Ivan Vidakovic
- Division of Biophysics, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria; (E.S.); (I.V.); (K.K.)
| | - Karin Kornmueller
- Division of Biophysics, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria; (E.S.); (I.V.); (K.K.)
| | - Markus Absenger-Novak
- Center for Medical Research, Medical University of Graz, 8010 Graz, Austria; (M.A.-N.); (E.F.)
| | - Borna Radatović
- Center of Excellence for Advanced Materials and Sensing Devices, Institute of Physics, 10000 Zagreb, Croatia;
| | | | - Gerd Leitinger
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria;
| | - Eleonore Fröhlich
- Center for Medical Research, Medical University of Graz, 8010 Graz, Austria; (M.A.-N.); (E.F.)
| | - Andreas Bernkop-Schnürch
- Department of Pharmaceutical Technology, Center for Chemistry and Biomedicine, Institute of Pharmacy, University of Innsbruck, 6020 Innsbruck, Austria;
| | - Eva Roblegg
- Department of Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, 8010 Graz, Austria; (A.S.); (C.T.); (E.R.)
| | - Ruth Prassl
- Division of Biophysics, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria; (E.S.); (I.V.); (K.K.)
- Correspondence: ; Tel.: +43-316-385-71695
| |
Collapse
|
10
|
Perečinec MG, Babić S, Čižmek L, Selmani A, Popović NT, Sikirić MD, Strunjak-Perović I, Čož-Rakovac R. Selenite as a Lipid Inductor in Marine Microalga Dunaliella tertiolecta: Comparison of One-Stage and Two-Stage Cultivation Strategies. Appl Biochem Biotechnol 2021; 194:930-949. [PMID: 34586600 DOI: 10.1007/s12010-021-03659-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 09/03/2021] [Indexed: 11/25/2022]
Abstract
Microalgae have emerged as one of the most promising alternative sources of biofuels due to their high lipid accumulation ability. High lipid content is of pivotal importance for biodiesel production. In order to obtain high lipid content, modifications of culture conditions and development of an efficient lipid induction method are called for. In the present study, the possibility of using selenium in a form of sodium selenite as a lipid inductor in marine microalga Dunaliella tertiolecta was investigated during one- and two-stage cultivation modes. The effects of selenite on algal growth, pigment content, oxidative stress, and neutral lipid content were determined during both cultivation modes. The results revealed that the two-stage cultivation on 10.00-40.00 mg L-1 of selenite resulted in up to twofold higher algal cell density compared to the one-stage cultivation. Selenite concentrations from 2.50 to 20.00 mg L-1 increased lipid peroxidation during both cultivation modes, emphasizing the selenite-induced oxidative stress accompanied by the increased lipid accumulation in microalgae cells. During one- and two-stage cultivation on 20.00 mg L-1 of selenite, lipid content increased 2.39- and 5.73-fold at days 9 and 14 of cultivation, respectively. Moreover, the highest obtained neutral lipid content during the two-stage cultivation was 5.40-fold higher than lipid content obtained during the one-stage cultivation. Collectively, these results suggest that the two-stage cultivation strategy, initiated with optimal culture conditions for biomass production and followed by the addition of selenite as a stress inductor, can be successfully deployed to enhance the lipid content in D. tertiolecta.
Collapse
Affiliation(s)
- Maja Galić Perečinec
- Laboratory for Aquaculture Biotechnology, Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
- Centre of Excellence for Marine Bioprospecting (BioProCro), Ruđer Bošković Institute, Zagreb, Croatia
| | - Sanja Babić
- Laboratory for Aquaculture Biotechnology, Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia.
- Centre of Excellence for Marine Bioprospecting (BioProCro), Ruđer Bošković Institute, Zagreb, Croatia.
| | - Lara Čižmek
- Laboratory for Aquaculture Biotechnology, Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
- Centre of Excellence for Marine Bioprospecting (BioProCro), Ruđer Bošković Institute, Zagreb, Croatia
| | - Atiđa Selmani
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry Zagreb, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
| | - Natalija Topić Popović
- Laboratory for Aquaculture Biotechnology, Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
- Centre of Excellence for Marine Bioprospecting (BioProCro), Ruđer Bošković Institute, Zagreb, Croatia
| | - Maja Dutour Sikirić
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry Zagreb, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
| | - Ivančica Strunjak-Perović
- Laboratory for Aquaculture Biotechnology, Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
- Centre of Excellence for Marine Bioprospecting (BioProCro), Ruđer Bošković Institute, Zagreb, Croatia
| | - Rozelindra Čož-Rakovac
- Laboratory for Aquaculture Biotechnology, Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
- Centre of Excellence for Marine Bioprospecting (BioProCro), Ruđer Bošković Institute, Zagreb, Croatia
| |
Collapse
|
11
|
Voss S, Jung-Sievers C, Pfadenhauer LM, Rehfuess E, Selmani A, Coenen M. Entwicklung eines logischen Modells zu kommunalen Strategien der Gesundheitsförderung und Prävention am Beispiel der Präventionskette „Gut und gesund aufwachsen in Freiham“. Das Gesundheitswesen 2021. [DOI: 10.1055/s-0041-1732199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- S Voss
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie - IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| | - C Jung-Sievers
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie - IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| | - LM Pfadenhauer
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie - IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| | - E Rehfuess
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie - IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| | - A Selmani
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie - IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| | - M Coenen
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie - IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| |
Collapse
|
12
|
Selmani A, Coenen M, Rehfuess E, Voss S, Jung-Sievers C, Robert M. EVIDENZBASIERTE GESUNDHEITSINDIZES UND -INDIKATOREN BEI KINDERN UND JUGENDLICHEN FÜR DIE EVALUATION VON GESUNDHEITSFÖRDERUNGSPROJEKTEN. Das Gesundheitswesen 2021. [DOI: 10.1055/s-0041-1732192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- A Selmani
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie – IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| | - M Coenen
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie – IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| | - E Rehfuess
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie – IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| | - S Voss
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie – IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| | - C Jung-Sievers
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie – IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| | - M Robert
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie – IBE, Lehrstuhl für Public Health und Versorgungsforschung, Ludwig-Maximilians-Universität München
- Pettenkofer School of Public Health
| |
Collapse
|
13
|
Selmani A, Ulm L, Kasemets K, Kurvet I, Erceg I, Barbir R, Pem B, Santini P, Marion ID, Vinković T, Krivohlavek A, Sikirić MD, Kahru A, Vinković Vrček I. Stability and toxicity of differently coated selenium nanoparticles under model environmental exposure settings. Chemosphere 2020; 250:126265. [PMID: 32109702 DOI: 10.1016/j.chemosphere.2020.126265] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/13/2020] [Accepted: 02/17/2020] [Indexed: 06/10/2023]
Abstract
This study, motivated to fill the knowledge gap on environmental safety of selenium nanoparticles (SeNPs), provides information on the stability and environmental safety of four differently coated SeNPs rendering both positive and negative surface charges. The stability and dissolution behaviour of SeNPs were determined in an aquatic model media of different ionic strength to provide information regarding the environmental fate of SeNPs in different environmental conditions. The environmental safety of SeNPs was evaluated by acute regulatory toxicity tests using Daphina magna and Vibrio fischeri as model organisms. Agglomeration was observed for all studied SeNPs in test media with higher ionic strength caused by the disruption of surface charge leading to electrostatic instability. Toxicity of SeNPs on both aquatic species was dose-dependent and increased with exposure time. The obtained data indicated that all of the tested SeNPs could be classified as harmful to the natural bacteria V. fischeri and harmful to toxic to crustaceans D. magna, but dependent on the coating agent used for SeNPs stabilization. Although SeNPs have attracted great interest for use in biomedicine, this study demonstrated that their ecotoxicological effects should be considered during the design of new of SeNPs-based products.
Collapse
Affiliation(s)
- Atiđa Selmani
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - Lea Ulm
- Department of Environmental Protection and Health Ecology, Andrija Štampar Teaching Institute of Public Health, Mirogojska cesta 16, 10000, Zagreb, Croatia
| | - Kaja Kasemets
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618, Tallinn, Estonia
| | - Imbi Kurvet
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618, Tallinn, Estonia
| | - Ina Erceg
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - Rinea Barbir
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000, Zagreb, Croatia
| | - Barbara Pem
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000, Zagreb, Croatia
| | - Paula Santini
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - Ida Delač Marion
- Center of Excellence for Advanced Materials and Sensing Devices, Institute of Physics, Bijenička 46, 10000, Zagreb, Croatia
| | - Tomislav Vinković
- University of Josip Juraj Strossmayer in Osijek, Faculty of Agrobiotechnical Sciences, Vladimira Preloga 1, 31000, Osijek, Croatia
| | - Adela Krivohlavek
- Department of Environmental Protection and Health Ecology, Andrija Štampar Teaching Institute of Public Health, Mirogojska cesta 16, 10000, Zagreb, Croatia
| | - Maja Dutour Sikirić
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618, Tallinn, Estonia; Estonian Academy of Sciences, Kohtu 6, 10130, Tallinn, Estonia.
| | - Ivana Vinković Vrček
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000, Zagreb, Croatia.
| |
Collapse
|
14
|
Vrandečić K, Ćosić J, Ilić J, Ravnjak B, Selmani A, Galić E, Pem B, Barbir R, Vinković Vrček I, Vinković T. Antifungal activities of silver and selenium nanoparticles stabilized with different surface coating agents. Pest Manag Sci 2020; 76:2021-2029. [PMID: 31943745 DOI: 10.1002/ps.5735] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/19/2019] [Accepted: 01/14/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Extensive and growing use of different chemical pesticides that affect both the environment and human health raises a need for new and more suitable methods to deal with plant pathogens. Nanotechnology has enabled the use of materials at the nanoscale with exceptional functionality in different economic domains including agricultural production. This study aimed to evaluate antifungal potential of selenium nanoparticles (SeNPs) and silver nanoparticles (AgNPs) stabilized with different surface coatings and characterized by different surface charge on plant pathogenic fungi Macrophomina phaseolina, Sclerotinia sclerotiorum and Diaporthe longicolla. RESULTS AgNPs were coated with three different stabilizing agents: mono citrate (MC-AgNPs), cetyltrimethyl ammonium bromide (CTAB-AgNPs) and polyvinylpyrrolidon (PVP-AgNPs). SeNPs were coated with poly-l-lysine (PLL-SeNPs), polyacrylic acid (PAA-SeNPs), and polyvinylpyrrolidon (PVP-SeNPs). Seven different concentrations (0.1, 0.5, 1, 5, 10, 50 and 100 mg L-1 ) of nanoparticles were applied. All AgNPs and SeNPs significantly inhibited the growth of the tested fungi. Among the tested NPs, PVP-AgNPs showed the best inhibitory effect on the tested plant pathogenic fungi, especially against S. sclerotiorum. The similar inhibition of the sclerotia formation was observed for S. sclerotiorum treated with PLL-SeNPs. CONCLUSION Obtained results provides new insights on fungicide effect of AgNPs and SeNPs stabilized with different coating agents on different plant pathogens. Further work should focus on detailed risk/benefit ratio assessment of using SeNPs or AgNPs in agriculture taking into account whole agroecosystem. © 2020 Society of Chemical Industry.
Collapse
Affiliation(s)
- Karolina Vrandečić
- Faculty of Agrobiotechnical Sciences Osijek, University of Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | - Jasenka Ćosić
- Faculty of Agrobiotechnical Sciences Osijek, University of Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | - Jelena Ilić
- Faculty of Agrobiotechnical Sciences Osijek, University of Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | - Boris Ravnjak
- Faculty of Agrobiotechnical Sciences Osijek, University of Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | | | - Emerik Galić
- Faculty of Agrobiotechnical Sciences Osijek, University of Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| | - Barbara Pem
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Rinea Barbir
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | | | - Tomislav Vinković
- Faculty of Agrobiotechnical Sciences Osijek, University of Josip Juraj Strossmayer in Osijek, Osijek, Croatia
| |
Collapse
|
15
|
Rončević S, Nemet I, Zagorec V, Selmani A. A facile size tunable one-pot synthesis of dipicolinate@nZVI core–shell nanoparticles: material properties for trace cadmium ion removal. NEW J CHEM 2020. [DOI: 10.1039/d0nj02775h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dipicolinic acid capped iron nanoparticles were obtained by a facile one-pot chemical synthesis and the ellipsoidal forms of PDCA@nZVI nanoparticles showed enhanced adsorption of cadmium ions at trace levels.
Collapse
Affiliation(s)
- Sanda Rončević
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- 10000 Zagreb
- Croatia
| | - Ivan Nemet
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- 10000 Zagreb
- Croatia
| | - Viktor Zagorec
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- 10000 Zagreb
- Croatia
| | | |
Collapse
|
16
|
Selmani A, Lützenkirchen J, Kučanda K, Dabić D, Redel E, Delač Marion I, Kralj D, Domazet Jurašin D, Dutour Sikirić M. Tailoring the stability/aggregation of one-dimensional TiO 2(B)/titanate nanowires using surfactants. Beilstein J Nanotechnol 2019; 10:1024-1037. [PMID: 31165029 PMCID: PMC6541377 DOI: 10.3762/bjnano.10.103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 05/02/2019] [Indexed: 05/13/2023]
Abstract
The increased utilization of one-dimensional (1D) TiO2 and titanate nanowires (TNWs) in various applications was the motivation behind studying their stability in this work, given that stability greatly influences both the success of the application and the environmental impact. Due to their high abundance in aqueous environments and their rich technological applicability, surfactants are among the most interesting compounds used for tailoring the stability. The aim of this paper is to determine the influence of surfactant molecular structure on TNW stability/aggregation behavior in water and aqueous NaBr solution by dynamic and electrophoretic light scattering. To accomplish this, two structurally different quaternary ammonium surfactants (monomeric DTAB and the corresponding dimeric 12-2-12) at monomer and micellar concentrations were used to investigate TNW stability in water and NaBr. It was shown that TNWs are relatively stable in Milli-Q water. However, the addition of NaBr induces aggregation, especially as the TNW mass concentration increases. DTAB and 12-2-12 adsorb on TNW surfaces as a result of the superposition of favorable electrostatic and hydrophobic interactions. As expected, the interaction of TNWs with 12-2-12 was stronger than with DTAB, due to the presence of two positively charged head groups and two hydrophobic tails. As a consequence of the higher adsorption of 12-2-12, TNWs remained stable in both media, while DTAB showed an opposite behavior. In order to gain more insight into changes in the surface properties after surfactant adsorption on the TNW surface, a surface complexation model was employed. With this first attempt to quantify the contribution of the surfactant structure on the adsorption equilibrium according to the observed differences in the intrinsic log K values, it was shown that 12-2-12 interacts more strongly with TNWs than DTAB. The modelling results enable a better understanding of the interaction between TNWs and surfactants as well as the prediction of the conditions that can promote stabilization or aggregation.
Collapse
Affiliation(s)
- Atiđa Selmani
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia
| | - Johannes Lützenkirchen
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Kristina Kučanda
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10002 Zagreb, Croatia
- current affiliation: Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Dario Dabić
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10002 Zagreb, Croatia
- current affiliation: Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, Marulićev trg 19, 10000 Zagreb, Croatia
| | - Engelbert Redel
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Ida Delač Marion
- Center of Excellence for Advanced Materials and Sensing Devices, Institute of Physics, Bijenička 46, 10000 Zagreb, Croatia
| | - Damir Kralj
- Laboratory for Precipitation Processes, Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia
| | - Darija Domazet Jurašin
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia
| | - Maja Dutour Sikirić
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia
| |
Collapse
|
17
|
Puerto Valencia LM, Weber A, Spegel H, Bögle R, Selmani A, Heinze S, Herr C. Yoga in the workplace and health outcomes: a systematic review. Occup Med (Lond) 2019; 69:195-203. [DOI: 10.1093/occmed/kqz033] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- L M Puerto Valencia
- Institute for Medical Informatics, Biometry and Epidemiology (IBE) at the Ludwig-Maximilians-Universität München, Munich, Germany
- Department of Occupational and Environmental Health/Epidemiology, Bavarian Health and Food Safety Authority (LGL), Munich, Germany
| | - A Weber
- Department of Occupational and Environmental Health/Epidemiology, Bavarian Health and Food Safety Authority (LGL), Munich, Germany
| | - H Spegel
- Department of Occupational and Environmental Health/Epidemiology, Bavarian Health and Food Safety Authority (LGL), Munich, Germany
| | - R Bögle
- Yoga Forum München e.V, Munich, Germany
- Center for Behavioural Medicine, Kothrud, Pune, India
| | - A Selmani
- Department of Occupational and Environmental Health/Epidemiology, Bavarian Health and Food Safety Authority (LGL), Munich, Germany
| | - S Heinze
- Department of Occupational and Environmental Health/Epidemiology, Bavarian Health and Food Safety Authority (LGL), Munich, Germany
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | - C Herr
- Department of Occupational and Environmental Health/Epidemiology, Bavarian Health and Food Safety Authority (LGL), Munich, Germany
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| |
Collapse
|
18
|
Pem B, González-Mancebo D, Moros M, Ocaña M, Becerro AI, Pavičić I, Selmani A, Babič M, Horák D, Vinković Vrček I. Biocompatibility assessment of up-and down-converting nanoparticles: implications of interferences with in vitro assays. Methods Appl Fluoresc 2018; 7:014001. [DOI: 10.1088/2050-6120/aae9c8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
19
|
Špadina M, Gourdin-Bertin S, Dražić G, Selmani A, Dufrêche JF, Bohinc K. Charge Properties of TiO 2 Nanotubes in NaNO 3 Aqueous Solution. ACS Appl Mater Interfaces 2018; 10:13130-13142. [PMID: 29620855 DOI: 10.1021/acsami.7b18737] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Charging of material surfaces in aqueous electrolyte solutions is one of the most important processes in the interactions between biomaterials and surrounding tissue. Other than a biomaterial, titania nanotubes (TiO2 NTs) represent a versatile material for numerous applications such as heavy metal adsorption or photocatalysis. In this article, the surface charge properties of titania NTs in NaNO3 solution were investigated through electrophoretic mobility and polyelectrolyte colloid titration measuring techniques. In addition, we used high-resolution transmission electron microscopy imaging to determine the morphology of TiO2 NTs. A theoretical model based on the classical density functional theory coupled with the charge regulation method in terms of mass action law was developed to understand the experimental data and to provide insights into charge properties at different physical conditions, namely, pH and NaNO3 concentration. Two intrinsic protonation constants and surface site density have been obtained. The electrostatic properties of the system in terms of electrostatic potentials and ion distributions were calculated and discussed for various pH values. The model can quantitatively describe the titration curve as a function of pH for higher bulk salt concentrations and the difference in the equilibrium amount of charges between the inner and outer surfaces of TiO2 NTs. Calculated counterion (NO3-) distributions show a pronounced decrease of NO3- ions for high bulk pH (both inside and outside TiO2 NT) because of the strong electric field. With the decrease of bulk pH or the increase of the salt concentration, NO3- is able to accumulate near the TiO2 NTs surfaces.
Collapse
Affiliation(s)
- Mario Špadina
- Institut de Chimie Séparative de Marcoule (ICSM), UMR 5257, CEA, Université de Montpellier, CNRS, ENSCM, BP 17171, F-30207 Bagnols-sur-Ceze , France
| | - Simon Gourdin-Bertin
- Institut de Chimie Séparative de Marcoule (ICSM), UMR 5257, CEA, Université de Montpellier, CNRS, ENSCM, BP 17171, F-30207 Bagnols-sur-Ceze , France
| | - Goran Dražić
- Laboratory for Materials Chemistry , National Institute of Chemistry , SI-1000 Ljubljana , Slovenia
| | - Atiđa Selmani
- Division of Physical Chemistry , Ruđer Boškovic Institute , 10000 Zagreb , Croatia
| | - Jean-François Dufrêche
- Institut de Chimie Séparative de Marcoule (ICSM), UMR 5257, CEA, Université de Montpellier, CNRS, ENSCM, BP 17171, F-30207 Bagnols-sur-Ceze , France
| | - Klemen Bohinc
- Faculty of Health Sciences , University of Ljubljana , Zdravstvena 5 , SI-1000 Ljubljana , Slovenia
| |
Collapse
|
20
|
Selmani A, Tavera-Vázquez A, Garza C, Castillo R. Tuning the Viscoelastic-Gel Transition of Single-Wall Carbon Nanotubes Embedded in pH-Responsive Polyelectrolyte Solutions. J Phys Chem B 2018; 122:348-359. [PMID: 29211472 DOI: 10.1021/acs.jpcb.7b09112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present the detailed rheological changes that occur when small quantities of single-wall carbon nanotubes are dispersed in a poly(acrylic acid) water solution, around the overlap polymer concentration, up to the gel point. Here, pH is used to tune the gel formation. Suspensions of nanotubes at pH ≤ 5 are exfoliated and dispersed by the polymer. Contacts between the nanotubes are mainly through polymer entangling, and the suspension is viscoelastic. At pH > 5, the polymer is charged, and the solution is not a good solvent for the nanotubes anymore. Nanotube bundles covered with polymer are formed and mechanically percolate along the fluid until they become arrested. As a consequence, the rheological behavior is dominated by a mesoscale superstructure formed by nanotubes and polymer, where viscoelasticity is lost and the suspension becomes elastic. At pH ≥ 9, the surroundings for the nanotubes are worse, bundles and flocs grow to a larger extent, and they can be observable by scanning microscopies. When the suspension becomes a critical gel, the relaxation moduli can be modeled by a power law in the frequency domain in agreement with the model developed by Winter and co-workers.
Collapse
Affiliation(s)
- Atiđa Selmani
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute , Bijenička cesta, 54, 10000 Zagreb, Croatia.,Instituto de Física, Universidad Nacional Autónoma de México , P.O. Box 20-364, 01000, México City, México
| | - Antonio Tavera-Vázquez
- Instituto de Física, Universidad Nacional Autónoma de México , P.O. Box 20-364, 01000, México City, México
| | - Cristina Garza
- Instituto de Física, Universidad Nacional Autónoma de México , P.O. Box 20-364, 01000, México City, México
| | - Rolando Castillo
- Instituto de Física, Universidad Nacional Autónoma de México , P.O. Box 20-364, 01000, México City, México
| |
Collapse
|
21
|
Buljan Meić I, Kontrec J, Domazet Jurašin D, Selmani A, Njegić Džakula B, Maltar-Strmečki N, Lyons DM, Plodinec M, Čeh M, Gajović A, Sikirić MD, Kralj D. How similar are amorphous calcium carbonate and calcium phosphate? A comparative study of amorphous phase formation conditions. CrystEngComm 2018. [DOI: 10.1039/c7ce01693j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Precipitation domains of ACP and ACP increase with the complexity of the system, the ACP one being always larger.
Collapse
|
22
|
Selmani A, Coha I, Magdić K, Čolović B, Jokanović V, Šegota S, Gajović S, Gajović A, Jurašin D, Dutour Sikirić M. Multiscale study of the influence of cationic surfactants on amorphous calcium phosphate precipitation. CrystEngComm 2015. [DOI: 10.1039/c5ce01516b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different effects that surfactant monomers and micelles exert on different length scales during CaPs formation in solution can lead to similar effects on the microscale.
Collapse
Affiliation(s)
- A. Selmani
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- 10000 Zagreb, Croatia
| | - I. Coha
- Division for Marine and Environmental Research
- Ruđer Bošković Institute
- Bijenička cesta 54
- 10000 Zagreb, Croatia
| | - K. Magdić
- Division for Marine and Environmental Research
- Ruđer Bošković Institute
- Bijenička cesta 54
- 10000 Zagreb, Croatia
| | - B. Čolović
- Vinča Institute of Nuclear Sciences
- University of Belgrade
- 11001 Belgrade, Serbia
| | - V. Jokanović
- Vinča Institute of Nuclear Sciences
- University of Belgrade
- 11001 Belgrade, Serbia
| | - S. Šegota
- Division for Marine and Environmental Research
- Ruđer Bošković Institute
- Bijenička cesta 54
- 10000 Zagreb, Croatia
| | - S. Gajović
- Croatian Institute for Brain Research
- School of Medicine
- University of Zagreb
- 10000 Zagreb, Croatia
| | - A. Gajović
- Division of Materials Physics
- Ruđer Bošković Institute
- 10000 Zagreb, Croatia
| | - D. Jurašin
- Division of Physical Chemistry
- Ruđer Bošković Institute
- 10000 Zagreb, Croatia
| | - M. Dutour Sikirić
- Division of Physical Chemistry
- Ruđer Bošković Institute
- 10000 Zagreb, Croatia
| |
Collapse
|
23
|
Beattie JK, Djerdjev AM, Gray-Weale A, Kallay N, Lützenkirchen J, Preočanin T, Selmani A. pH and the surface tension of water. J Colloid Interface Sci 2014; 422:54-7. [DOI: 10.1016/j.jcis.2014.02.003] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 01/30/2014] [Accepted: 02/04/2014] [Indexed: 11/17/2022]
|
24
|
Preočanin T, Selmani A, Lindqvist-Reis P, Heberling F, Kallay N, Lützenkirchen J. Surface charge at Teflon/aqueous solution of potassium chloride interfaces. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.07.025] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
25
|
Preočanin T, Stipić F, Selmani A, Kallay N. Surface Potential of Polycrystalline Hematite in Aqueous Medium. International Journal of Electrochemistry 2011. [DOI: 10.4061/2011/412731] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The surface potential of polycrystalline hematite in aqueous sodium perchlorate environment as a function of pH was examined. Surface potential of hematite was obtained from measured electrode potential of a nonporous polycrystalline hematite electrode. Acidic solution was titrated with base, and the backward titration with acid was performed. Substantial hysteresis was obtained which enabled location of the point of zero potential and equilibrium values of surface potentials. The theoretical interpretation of the equilibrium data was performed by applying the surface complexation model and the thermodynamic equilibrium constants for the first and the second step of surface protonation was obtained aslogK1∘=11.3;logK2∘=2.8.
Collapse
Affiliation(s)
- Tajana Preočanin
- Laboratory of Physical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102A, 10000 Zagreb, Croatia
| | - Filip Stipić
- Laboratory of Physical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102A, 10000 Zagreb, Croatia
| | - Atiđa Selmani
- Laboratory of Physical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102A, 10000 Zagreb, Croatia
| | - Nikola Kallay
- Laboratory of Physical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102A, 10000 Zagreb, Croatia
| |
Collapse
|
26
|
Tremblay A, Tremblay S, Favis BD, Selmani A, L'Esperance G. Locating the Modifier in a Polymer Blend by Electron Energy-Loss Spectroscopy. Macromolecules 2002. [DOI: 10.1021/ma00117a067] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
27
|
Chenite A, Chaput C, Wang D, Combes C, Buschmann MD, Hoemann CD, Leroux JC, Atkinson BL, Binette F, Selmani A. Novel injectable neutral solutions of chitosan form biodegradable gels in situ. Biomaterials 2000; 21:2155-61. [PMID: 10985488 DOI: 10.1016/s0142-9612(00)00116-2] [Citation(s) in RCA: 865] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A novel approach to provide, thermally sensitive neutral solutions based on chitosan/polyol salt combinations is described. These formulations possess a physiological pH and can be held liquid below room temperature for encapsulating living cells and therapeutic proteins; they form monolithic gels at body temperature. When injected in vivo the liquid formulations turn into gel implants in situ. This system was used successfully to deliver biologically active growth factors in vivo as well as an encapsulating matrix for living chondrocytes for tissue engineering applications. This study reports for the first time the use of polymer/polyol salt aqueous solutions as gelling systems, suggesting the discovery of a prototype for a new family of thermosetting gels highly compatible with biological compounds.
Collapse
Affiliation(s)
- A Chenite
- Center for Applied Research on Polymers, Chemical Engineering Department and Institute of Biomedical Engineering, Ecole Polytechnique of Montreal, PQ, Canada.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Parente V, Fredriksson C, Selmani A, Lazzaroni R, Brédas JL. Theoretical Characterization of the Vibrational Properties at the Aluminum/trans-Polyacetylene Interface. J Phys Chem B 1997. [DOI: 10.1021/jp963881y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- V. Parente
- Centre de Recherche en Electronique et Photonique Moléculaires, Service de Chimie des Matériaux Nouveaux, Université de Mons-Hainaut, B-7000 Mons, Belgium, and Centre de Recherche Appliquée sur les Polymères (CRASP), Département de Génie Chimique, Ecole Polytechnique de Montréal, P.O. Box 6079, Station Centre-Ville, Montréal, Québec H3C 3A7, Canada
| | - C. Fredriksson
- Centre de Recherche en Electronique et Photonique Moléculaires, Service de Chimie des Matériaux Nouveaux, Université de Mons-Hainaut, B-7000 Mons, Belgium, and Centre de Recherche Appliquée sur les Polymères (CRASP), Département de Génie Chimique, Ecole Polytechnique de Montréal, P.O. Box 6079, Station Centre-Ville, Montréal, Québec H3C 3A7, Canada
| | - A. Selmani
- Centre de Recherche en Electronique et Photonique Moléculaires, Service de Chimie des Matériaux Nouveaux, Université de Mons-Hainaut, B-7000 Mons, Belgium, and Centre de Recherche Appliquée sur les Polymères (CRASP), Département de Génie Chimique, Ecole Polytechnique de Montréal, P.O. Box 6079, Station Centre-Ville, Montréal, Québec H3C 3A7, Canada
| | - R. Lazzaroni
- Centre de Recherche en Electronique et Photonique Moléculaires, Service de Chimie des Matériaux Nouveaux, Université de Mons-Hainaut, B-7000 Mons, Belgium, and Centre de Recherche Appliquée sur les Polymères (CRASP), Département de Génie Chimique, Ecole Polytechnique de Montréal, P.O. Box 6079, Station Centre-Ville, Montréal, Québec H3C 3A7, Canada
| | - J. L. Brédas
- Centre de Recherche en Electronique et Photonique Moléculaires, Service de Chimie des Matériaux Nouveaux, Université de Mons-Hainaut, B-7000 Mons, Belgium, and Centre de Recherche Appliquée sur les Polymères (CRASP), Département de Génie Chimique, Ecole Polytechnique de Montréal, P.O. Box 6079, Station Centre-Ville, Montréal, Québec H3C 3A7, Canada
| |
Collapse
|
29
|
Rivard CH, Chaput C, Rhalmi S, Selmani A. [Bio-absorbable synthetic polyesters and tissue regeneration. A study of three-dimensional proliferation of ovine chondrocytes and osteoblasts]. Ann Chir 1996; 50:651-8. [PMID: 9035439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The tissue engineering area henceforth calls more and more for bioabsorbable substrata made of biopolymers (collagen, laminin...) or polymers (PLA, PLGA, PGA...) to realize the three-dimensional culture of tissue equivalents. The poly (beta-hydroxybutyrate-beta-hydroxyvalerate), a biopolymer considered as being biodegradable and biocompatible, has been recently introduced for orthopaedic biomaterials and regeneration purposes. In our study, a PHB/9% HV polymer was transformed into 3D foams, then applied to the culture 3D of ovine chondrocytes (fibrous rings & growth plates) and osteoblasts (periostum). Sponges made of bovine type I collagen were used as references. Orthopaedic cells were isolated, prepared and sown by simple injection to the geometrical center of the substrata, then incubated from 0 to 35 days by changing the culture medium all 4 days. Maximal densities were reached after 21 days: 18-24.10(6) cells/g for the chondrocytes, 8-10.10(6) cells/g for the osteoblasts. The cellular proliferation was more marked, with highest cell densities, for the collagen sponges. Laser confocal microscopy shows that the cellular diffusion take place throughout the entire volume of the porous artificial substrata. Future studies will allow to apply the porous bioabsorbable substrata to high-density cell cultures, to the tissue engineering and regeneration, for example for orthopaedic tissues: cartilage, fibrocartilage and bone.
Collapse
Affiliation(s)
- C H Rivard
- Laboratoire de Biomécanique Orthopédique, Hôpital Sainte-Justine, Montréal, Québec, Canada
| | | | | | | |
Collapse
|
30
|
|
31
|
Elfeninat F, Fredriksson C, Sacher E, Selmani A. A theoretical investigation of the interactions between thiophene and vanadium, chromium, copper, and gold. J Chem Phys 1995. [DOI: 10.1063/1.469349] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
32
|
Shi MK, Martinu L, Sacher E, Selmani A, Wertheimer MR, Yelon A. Angle-resolved XPS study of plasma-treated teflon PFA surfaces. SURF INTERFACE ANAL 1995. [DOI: 10.1002/sia.740230209] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
33
|
Abstract
A natural poly(hydroxybutyrate-co-9% hydroxyvalerate) copolyester was processed into a three-dimensional porous foam structure by salt leaching/solvent casting with previously sieved sodium chloride salts. Laboratory-built P(HB-9% HV) foams and commercial collagen sponges were cut into small rectangular specimens, sterilized, and prewetted using ethanol, rinsed with Dulbecco's minimum essential medium + 10% serum culture media, and seeded with fibroblasts isolated from canine anterior cruciate ligaments. The fibroblast cultures into such porous substrates were performed from 0 to 35 days by incubation (5% CO2) at 37 degrees C. It demonstrated that the P(HB-HV) sustained a cell proliferation rate similar to that observed in collagen sponges, up to at least 35 days, with a maximal cell density on the day 28 in culture. On the other hand, the P(HB-HV) materials kept their structural integrity during the culture period while the collagen foams contracted greatly. Further, the total protein production after 4 weeks in culture was found to be twice as high (190 +/- 10%) in the P(HB-9% HV) foam than in the collagen foam. Porous P(HB-HV) materials appear to be adequate polymeric substrates for cell cultures. However, further evaluations are still required to confirm such preliminary results.
Collapse
Affiliation(s)
- C H Rivard
- Department of Orthopaedic Surgery, Hôpital Sainte-Justine, Montréal, Canada
| | | | | | | | | |
Collapse
|
34
|
Fredriksson C, Lazzaroni R, Brédas JL, Ouhlal A, Selmani A. Metal/conjugated polymer interfaces: A local density functional study of aluminum/polyene interactions. J Chem Phys 1994. [DOI: 10.1063/1.466678] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
35
|
|
36
|
Selmani A, Elfeninat F, Hliwa M. Electronic and geometric structures of the high- and low-spin multiplets of the Cr(C6H6) π complex. Chem Phys Lett 1993. [DOI: 10.1016/0009-2614(93)85094-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
37
|
|
38
|
|
39
|
Selmani A, Wassom CE. Effect of Mild Drought on Chlorophyll Fluorescence and Morphological Traits in Young Maize Seedlings. ACTA ACUST UNITED AC 1991. [DOI: 10.2307/3627855] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
40
|
|