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    Wyświetlanie 1-8 z 8
    Tytuł:
    Novel injectable, self-gelling hydrogel-microparticle composites for bone regeneration consisting of gellan gum and calcium and magnesium carbonate microparticles
    Autorzy:
    Douglas, T. E. L.
    Łapa, A.
    Reczyńska, K.
    Krok-Borkowicz, M.
    Pietryga, K.
    Samal, S. K.
    Schaubroeck, D.
    Boone, M.
    Voort, P. van der
    Schamphelaere, K. de
    Stevens, C. V.
    Bliznuk, V.
    Parakhonskiy, B. V.
    Cnudde, V.
    Pamuła, E.
    Skirtach, A. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/285607.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    hydrogels
    bone regeneration
    composites
    Źródło:
    Engineering of Biomaterials; 2016, 19, 138; 111
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of titanium dioxide addition on physical and biological properties of Na2O-B2O3-P2O5 and CaO-Na2O-P2O5 glasses
    Autorzy:
    Kalwasińska, O.
    Gajc, M.
    Kłos, A.
    Orliński, K.
    Pawlak, D. A.
    Krok-Borkowicz, M.
    Rumian, Ł.
    Pietryga, K.
    Reczyńska, K.
    Pamuła, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/285502.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    phosphate glasses
    bioactive glasses
    titanium dioxide
    tissue engineering
    Opis:
    Two types of phosphate glasses 50Na2O-20B2O3-30P2O5 (NBP) and 30CaO-20Na2O-50P2O5 (CNP) with different content of TiO2 (0, 3 and 5 mol%) have been prepared by melt-quenching process. TiO2 was added to increase glass network stability. Physical properties of glasses were investigated by density measurements, differential scanning calorimetry and degradation in phosphate buffered saline (PBS). Biological performance of glasses in a direct contact with osteoblast-like MG-63 cells was analysed with the use of resazurin test and live-dead staining. The results show that TiO2 addition increased density, glass transition temperature (Tg) and melting temperature (Tm) of both types of glasses. In the case of NBP glasses presence of TiO2 resulted in their fast degradation in PBS and acidification of cell culture medium. As a consequence such glasses did not support cell adhesion and growth, but they can be considered for e.g. drug delivery systems. On the other hand addition of TiO2 to CNP glasses resulted in enhanced cell adhesion and viability. Particularly positive results were found for CNP glass containing 5% TiO2, so it can be a good candidate as a scaffold material for bone tissue engineering.
    Źródło:
    Engineering of Biomaterials; 2016, 19, 134; 2-7
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of mineralization conditions on the effectiveness of enzymatic mineralization of hydrogels
    Autorzy:
    Pietryga, K.
    Reczyńska, K.
    Pamuła, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/285814.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    enzymatic mineralization
    hydrogels
    bone tissue engineering
    Opis:
    Polysaccharide hydrogels are widely used in food industry and medicine. Gellan gum (GG) recently gained a lot of attention as a promising material for tissue regeneration proposes due to its excellent biocompatibility and similarity to natural extracellular matrix. However, in unmineralized form it is not suitable for bone tissue engineering because of weak mechanical properties. Enzymatic mineralization (e.g. using alkaline phosphatase – ALP) is one of the methods of calcifying of hydrogels and it resembles natural processes occurring during bone healing. The aim of this research was to investigate mineralization of hydrogels and to improve properties of gellan gum scaffolds by adjusting processing conditions. Since ALP does not form with GG covalent bonds, during incubation in mineralization medium (solution of calcium glycerophosphate - CaGP) it is diffusing from the samples. Therefore, mineralization effectiveness depends on the interplay between incoming CaGP and outgoing ALP molecules. We hypothesize that better CaGP availability, especially in the first hours of incubation, can result in more effective and homogenous precipitation of calcium phosphates (CaP) in GG samples. To this end, samples with different GG and ALP concentration were subjected to two different mineralization regimes (more and less frequent CaGP exchanges). We proved that better CaGP availability (more frequent CaGP exchange) resulted in better mechanical properties (Young’s modulus) and more effective mineral formation (higher dry mass percentage) of the samples compared to the same samples mineralized with lower accessibility of CaGP. This may be related to the fact, that in presence of fresh organic substrates, more CaP are formed in the outer parts of the samples at the beginning of the process, that limit ALP diffusion and allow more uniform mineralization.
    Źródło:
    Engineering of Biomaterials; 2015, 18, 131; 2-7
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Superparamagnetic iron oxide nanoparticles as versatile drug delivery carriers
    Autorzy:
    Reczyńska, K.
    Marszałek, M.
    Zarzycki, A.
    Reczyński, W.
    Chrzanowski, W.
    Pamuła, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/284204.pdf
    Data publikacji:
    2018
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    nanoparticles
    iron oxide
    silica coating
    Źródło:
    Engineering of Biomaterials; 2018, 21, 148; 104
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of pre-coarsening on architectural and mechanical properties of highly porous titanium dioxide scaffolds for bone tissue engineering
    Autorzy:
    Reczyńska, K.
    Rumian, Ł.
    Pamuła, E.
    Haugen, H. J.
    Tiainen, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/284566.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    bone tissue engineering
    porous titanium
    biomaterials
    Źródło:
    Engineering of Biomaterials; 2014, 17, no. 128-129; 96-98
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of saturated fatty acids on human lung epithelial cells
    Autorzy:
    Reczyńska, K.
    Pamuła, E.
    Chrzanowski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/286111.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    epithelial cells
    fatty acid
    human lung
    Źródło:
    Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 55
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The spread of Impatiens parviflora DC. in Central European oak forests - another stage of invasion?
    Autorzy:
    Reczynska, K.
    Swierkosz, K.
    Dajdok, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/56626.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Impatiens parviflora
    spread
    Central Europe
    oak forest
    invasive plant
    long-term change
    plant species
    species composition
    forest vegetation
    small balsam
    Opis:
    In this study, we examine the pattern of occurrence of Impatiens parviflora in Central European oak forests over time and its ecological requirements within these types of communities. Research was based on phytosociological data collected in 3776 relevés. A modified TWINSPAN algorithm were used to distinguish the groups of oak forests. The ecological preferences of the I. parviflora and studied communities as well as differences between invaded and non-invaded vegetation plots were analyzed using mean weighted Ellenberg indicator values (EIVs). Finally, both the temporal pattern of I. parviflora participation and changes in its coverage in the studied communities were analyzed. Our study confirmed a high adaptability of this species with respect to temperature, moisture, soil reaction and nutrients and determined its broad ecological optimum in oak forests. However, it also revealed both a greater sensitivity of some communities within Central European oak forests to the invasion of I. parviflora and differences in habitat conditions between invaded and non-invaded vegetation plots. This suggests that the habitat niche of I. parviflora within oak forests is not accidental. The analysis of temporal changes in the frequency of I. parviflora confirmed a 20% increase in relevés over the last 50 years. However, we did not identify any statistically significant rise in the coverage of I. parviflora in oak forests specifically during the studied period.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2015, 84, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of sintering conditions on microstructure and mechanical properties of titanium dioxide scaffolds for the treatment of bone tissue defects
    Autorzy:
    Rumian, Ł.
    Reczyńska, K.
    Wrona, M.
    Tiainen, H.
    Haugen, H. J.
    Pamuła, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/307325.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    porowatość
    inżynieria tkankowa
    ditlenek tytanu
    właściwości mechaniczne
    porosity
    titanium dioxide
    bone tissue engineering
    mechanical properties
    polymer sponge replication
    ceramic scaffolds
    Opis:
    In this study the attempts to improve mechanical properties of highly-porous titanium dioxide scaffolds produced by polymer sponge replication method were investigated. Particularly the effect of two-step sintering at different temperatures on microstructure and mechanical properties (compression test) of the scaffolds were analysed. To this end microcomputed tomography and scanning electron microscopy were used as analytical methods. Our experiments showed that the most appropriate conditions of manufacturing were when the scaffolds were heat-treated at 1500 °C for 1 h followed by sintering at 1200 °C for 20 h. Such scaffolds exhibited the highest compressive strength which was correlated with the highest linear density and the lowest size of grains. Moreover, grain size distribution was narrower with predominating fraction of fine grains 10–20 μm in size. Smaller grains and higher linear density suggested that in this case densification process prevailed over undesirable process of grain coarsening, which finally resulted in improved mechanical properties of the scaffolds.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2015, 17, 1; 3-9
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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