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Wyszukujesz frazę "chitosan hydrogels" wg kryterium: Wszystkie pola


Wyświetlanie 1-6 z 6
Tytuł:
Structural and biological characteristics of self-organising chitosan hydrogels
Autorzy:
Pieklarz, Katarzyna
Tylman, Michał
Modrzejewska, Zofia
Galita, Grzegorz
Majsterek, Ireneusz
Powiązania:
https://bibliotekanauki.pl/articles/2131528.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
biomaterials
chitosan
cytotoxicity
self-organising hydrogels
structural properties
tissue engineering
Opis:
Creating innovative methods of treatment and regeneration of damaged tissues or organs is a key challenge of the twenty-first century. The aim of this study was to determine the possibility of producing and characterising the properties of self-organising chitosan hydrogels prepared with the use of chitosan lactate/chloride and disodium hydrogen phosphate dodecahydrate as a cross-linking agent. The structure and supramolecular architecture of the biomaterials were evaluated by Fourier-transform infrared spectroscopy and polarised optical microscopy. Biological studies assessed cytotoxicity by contact with a human colon adenocarcinoma cell line. The colourimetric resazurin assay showed that the obtained chitosan hydrogels are non-cytotoxic materials. Thus, self-organising biomaterials hold great promise for application in tissue engineering.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2021, 26; 191-199
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation and characterization of a new generation of chitosan hydrogels containing pyrimidine ribonucleotides
Autorzy:
Pieklarz, Katarzyna
Tylman, Michał
Modrzejewska, Zofia
Powiązania:
https://bibliotekanauki.pl/articles/1034023.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
biomaterial
chitosan
hydrogel
neural tissue regeneration
Opis:
Damage to the nervous system, in particular spinal cord injuries, is a burden for the patient and is usually the cause of irreversible disability. The progress observed in the last decade in the fields of biology, biomaterial engineering and neurosurgery has created new treatment solutions while preventing further neurodegenerative processes. The most important research is focused on the implementation of polymer structures in clinical practice, especially chitosan hydrogels, which are the scaffolds for regenerating axons. This article presents a new generation of biomaterials that have the ability to gel in response to temperature changes; they are intended for injectable scaffolds for nerve cell cultures. Two types of hydrogels were prepared based on chitosan lactate and chitosan chloride using uridine 5’-monophosphate disodium salt. The structure of the systems was observed under a scanning electron microscope and examined using Fourier transform infrared spectroscopy. In addition, thermal properties were tested using differential scanning calorimetry.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2020, 25; 192-200
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural characteristics of thermosensitive chitosan glutaminate hydrogels
Autorzy:
Modrzejewska, Zofia
Nawrotek, Katarzyna
Zarzycki, R
Douglas, Timothz
Powiązania:
https://bibliotekanauki.pl/articles/1035319.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
chitosan
hydrogel
natural polymer
structural properties
Opis:
Hydrogels that possess the ability of gelling in response to changes in the local environment, such as pH or temperature, have been examined extensively recently. In this paper the properties of thermosensitive chitosan hydrogels prepared with the use of chitosan glutaminate and -glycerophosphate are presented. The sol/gel transition point was determined based on the rheological properties. The structure of gels was observed under the Scanning Electron Microscopy (SEM) and was investigated by thermogravimetric (TG) and differential themogravimetric (DTG) analy¬sis and infrared (IR) spectroscopy. The crystallinity of gel structure was determined by X-ray Diffraction analysis (XRD).
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2013, 18, 18; 93-105
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cytotoxicity of chitosan based thermo-sensitive hydrogels intended for nervous tissue engineering
Autorzy:
Nawrotek, Katarzyna
Modrzejewska, Zofia
Paluch, Danuta
Zarzycki, Roman
Rusak, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1034899.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
Chitosan
biomaterial
hydrogel
nervous tissue regeneration
Opis:
The damage to the central nervous system is one of the most difficult cases of trauma to treat. Over the last few years, increasing attention has been focused on the development of strategies based on biomaterials for regeneration and repair of the spinal cord injury. In particular, materials in the form of hydrogels based on chitosan are being actively investigated due to their intrinsic properties that are favorable in spinal cord tissue regeneration. The purpose of this study was to develop a thermo-gelling chitosan solution that will be prepared with the use of acids that naturally occur in the human nervous tissue. For this purpose, two types of chitosan gels were prepared based on chitosan glutamate and chitosan lactate. In order to reduce toxic action of the system obtained gels were conditioned in distilled water with pH 5.00. The changes in the structures of systems obtained were determined with the use of FTIR method. Biocompatibility was primarily evaluated through cytotoxicity testing by MTT assay with respect to mouse fibroblast cells.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2015, 20; 222-235
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural research of thermosensitive chitosan-collagen gels containing alp
Autorzy:
Skwarczyńska, Agata
Biniaś, Dorota
Modrzejewska, Zofia
Powiązania:
https://bibliotekanauki.pl/articles/1034675.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
alkaline phosphatase
chitosan
collagen
thermosensitive hydrogels
Opis:
Introducing collagen, which is basic ingredient of bone tissue, into the structure of chitosan gels which are formed at the physiological body temperature, is aimed at creating the so-called biomimetic structures, i.e. close in their composition to the natural composition of bone tissue. Within the research the influence of collagen on structural properties of thermosensitive chitosan gels and the influence of ALP on structural properties of chitosan and chitosan-collagen gels was determined.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2016, 21; 176-186
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the addition of collagen on the rheological properties of chitosan chloride solutions
Autorzy:
Owczarz, Piotr
Rył, Anna
Modrzejewska, Zofia
Dziubiński, Marek
Powiązania:
https://bibliotekanauki.pl/articles/1034555.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
chitosan
collagen
rheology
thermosensitive hydrogels
viscoelastic behaviour
Opis:
Colloidal solutions of chitosan of crab origin with the addition of collagen obtained from cowhide were studied. Were presents the influence of collagen concentration and the method of preparing the sample on the obtained mechanical properties of the solutions and the observed phase transition temperature. Rheological measurements were performed to determine the viscoelastic properties and phase transition temperatures of these solutions. The study was conducted in the temperature range of 5–60°C with the use of classical techniques of rotational rheometry in the cone-plate measurement system. A significant influence of a collagen addition to chitosan chloride solutions on the viscoelastic properties of the systems was observed. The addition of collagen in all the cases increased the sol–gel phase transition temperature in comparison with the chitosan chloride solution containing β-glycerophosphate.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2017, 22; 176-189
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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