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  1. AU="Olvera-Sosa, Miguel"
  2. AU="Kent, N"
  3. AU=Simon Junior Hany AU=Simon Junior Hany
  4. AU="Stevens-Hernandez, Christian J"
  5. AU="Xie, Jingwei"
  6. AU="Odenigbo, Kenechukwu A"
  7. AU="Dana N. Mitzel"
  8. AU="Rothenberg, Steven"
  9. AU="Skilling, Tracey"
  10. AU=Barnett Stephen M
  11. AU="Motuzas, Juliuz"
  12. AU="Chata Quispe, Yulisa"
  13. AU="Hougaard, Anders"
  14. AU="Da Cruz ESilva, C Beir Ao"
  15. AU="Weinberg-Shukron, Ariella"
  16. AU="Frost, Patrice A"
  17. AU="Nielsen, David R"
  18. AU="Natsui, Hiroaki"
  19. AU="Ziv Ben-Ari"
  20. AU="Gönen, Murat"
  21. AU="Soliman, Essam S"
  22. AU="Poenisch, Falk"
  23. AU="Ng C."
  24. AU="Cabaton, Nicolas J"

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  1. Artikel ; Online: Core-shell chitosan/Porphyridium-exopolysaccharide microgels: Synthesis, properties, and biological evaluation

    Ruiz-Dávila, Claudia Elizabeth / Solís Andrade, Karla Ivon / Olvera-Sosa, Miguel / Palestino, Gabriela / Rosales Mendoza, Sergio

    International Journal of Biological Macromolecules. 2023 Aug., v. 246 p.125655-

    2023  

    Abstract: Advanced materials used in the biomedicine field comprises a diverse group of organic molecules, including polymers, polysaccharides, and proteins. A significant trend in this area is the design of new micro/nano gels whose small size, physical stability, ...

    Abstract Advanced materials used in the biomedicine field comprises a diverse group of organic molecules, including polymers, polysaccharides, and proteins. A significant trend in this area is the design of new micro/nano gels whose small size, physical stability, biocompatibility, and bioactivity could lead to new applications. Herein a new synthesis route is described to obtain core-shell microgels based on chitosan and Porphyridium exopolysaccharides (EPS) crosslinked with sodium tripolyphosphate (TPP). First, the synthesis of EPS-chitosan gels through ionic interactions was explored, leading to the formation of unstable gels. Alternatively, the use of TTP as crosslinker agent led to stable core-shell structures. The influence of reaction temperature, sonication time, and exopolysaccharide concentration, pH and TPP concentration were determined as a function of particle size and polydispersity index (PDI). The obtained EPS-chitosan gels were characterized by TEM, TGA, and FTIR; followed by the assessment of protein load capacity, stability upon freezing, cytotoxicity, and mucoadhesivity. Experimentation revealed that the core-shell particles size ranges 100–300 nm, have a 52 % loading capacity for BSA and a < 90 % mucoadhesivity, and no toxic effects in mammalian cell cultures. The potential application of the obtained microgels in the biomedical field is discussed.
    Schlagwörter Porphyridium ; biocompatibility ; biological assessment ; chitosan ; crosslinking ; cytotoxicity ; exopolysaccharides ; mammals ; medicine ; microgels ; pH ; particle size ; sodium tripolyphosphate ; sonication ; temperature ; Hydrogel ; Core-shell
    Sprache Englisch
    Erscheinungsverlauf 2023-08
    Erscheinungsort Elsevier B.V.
    Dokumenttyp Artikel ; Online
    ZDB-ID 282732-3
    ISSN 1879-0003 ; 0141-8130
    ISSN (online) 1879-0003
    ISSN 0141-8130
    DOI 10.1016/j.ijbiomac.2023.125655
    Datenquelle NAL Katalog (AGRICOLA)

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  2. Artikel ; Online: Core-shell chitosan/Porphyridium-exopolysaccharide microgels: Synthesis, properties, and biological evaluation.

    Ruiz-Dávila, Claudia Elizabeth / Solís-Andrade, Karla Ivón / Olvera-Sosa, Miguel / Palestino, Gabriela / Rosales-Mendoza, Sergio

    International journal of biological macromolecules

    2023  Band 246, Seite(n) 125655

    Abstract: Advanced materials used in the biomedicine field comprises a diverse group of organic molecules, including polymers, polysaccharides, and proteins. A significant trend in this area is the design of new micro/nano gels whose small size, physical stability, ...

    Abstract Advanced materials used in the biomedicine field comprises a diverse group of organic molecules, including polymers, polysaccharides, and proteins. A significant trend in this area is the design of new micro/nano gels whose small size, physical stability, biocompatibility, and bioactivity could lead to new applications. Herein a new synthesis route is described to obtain core-shell microgels based on chitosan and Porphyridium exopolysaccharides (EPS) crosslinked with sodium tripolyphosphate (TPP). First, the synthesis of EPS-chitosan gels through ionic interactions was explored, leading to the formation of unstable gels. Alternatively, the use of TTP as crosslinker agent led to stable core-shell structures. The influence of reaction temperature, sonication time, and exopolysaccharide concentration, pH and TPP concentration were determined as a function of particle size and polydispersity index (PDI). The obtained EPS-chitosan gels were characterized by TEM, TGA, and FTIR; followed by the assessment of protein load capacity, stability upon freezing, cytotoxicity, and mucoadhesivity. Experimentation revealed that the core-shell particles size ranges 100-300 nm, have a 52 % loading capacity for BSA and a < 90 % mucoadhesivity, and no toxic effects in mammalian cell cultures. The potential application of the obtained microgels in the biomedical field is discussed.
    Mesh-Begriff(e) Animals ; Chitosan/chemistry ; Microgels ; Porphyridium ; Gels/chemistry ; Ions ; Particle Size ; Mammals
    Chemische Substanzen Chitosan (9012-76-4) ; Microgels ; Gels ; Ions
    Sprache Englisch
    Erscheinungsdatum 2023-07-01
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 282732-3
    ISSN 1879-0003 ; 0141-8130
    ISSN (online) 1879-0003
    ISSN 0141-8130
    DOI 10.1016/j.ijbiomac.2023.125655
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Volltext online

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    Verfügbar in ZB MED Köln/Königswinter

    Zs.B 2374: Hefte anzeigen Standort:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  3. Artikel: Synthesis and Characterization of Innovative Microgels Based on Polyacrylic Acid and Microalgae Cell Wall and Their Potential as Antigen Delivery Vehicles.

    García-Silva, Ileana / Olvera-Sosa, Miguel / Ortega-Berlanga, Benita / Ruíz-Rodríguez, Víctor / Palestino, Gabriela / Rosales-Mendoza, Sergio

    Pharmaceutics

    2022  Band 15, Heft 1

    Abstract: In this study, hybrid polyacrylic acid ... ...

    Abstract In this study, hybrid polyacrylic acid and
    Sprache Englisch
    Erscheinungsdatum 2022-12-30
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2527217-2
    ISSN 1999-4923
    ISSN 1999-4923
    DOI 10.3390/pharmaceutics15010133
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Synthesis of Bamboo-like Multiwall Carbon Nanotube-Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II).

    Chazaro-Ruiz, Luis F / Olvera-Sosa, Miguel / Vidal, Gabriela / Rangel-Mendez, J Rene / Palestino, Gabriela / Perez, Fatima / Zhang, Wei

    Biosensors

    2020  Band 10, Heft 10

    Abstract: A poly(acrylic acid-co-itaconic acid) (PAA-co-IA)/NaOH hydrogel containing bamboo-type multiwall carbon nanotubes (B-MWCNTs) doped with nitrogen (PAA-co-IA/NaOH/B-MWCNTs) was synthesized and characterized by SEM, absorption of water, point of zero ... ...

    Abstract A poly(acrylic acid-co-itaconic acid) (PAA-co-IA)/NaOH hydrogel containing bamboo-type multiwall carbon nanotubes (B-MWCNTs) doped with nitrogen (PAA-co-IA/NaOH/B-MWCNTs) was synthesized and characterized by SEM, absorption of water, point of zero charges, infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. The possible use of the PAA-co-IA/NaOH/B-MWCNT hydrogel as an electrode modifier and pre-concentrator agent for Cd(II) sensing purposes was then evaluated using carbon paste electrodes via differential pulse voltammetry. The presence of the B-MWCNTs in the hydrogel matrix decreased its degree of swelling, stabilized the structure of the swollen gel, and favored the detection of 3 ppb Cd(II), which is comparable to the World Health Organization's allowable maximum value in drinking water. A calibration curve was obtained in the concentration range of 2.67 × 10
    Mesh-Begriff(e) Acrylates ; Cadmium/analysis ; Electrochemical Techniques ; Electrodes ; Graphite ; Hydrogels/chemistry ; Ions ; Limit of Detection ; Mercury ; Nanotubes, Carbon/chemistry ; Sodium Hydroxide/chemistry ; Succinates ; Water
    Chemische Substanzen Acrylates ; Hydrogels ; Ions ; Nanotubes, Carbon ; Succinates ; Cadmium (00BH33GNGH) ; Water (059QF0KO0R) ; Sodium Hydroxide (55X04QC32I) ; Graphite (7782-42-5) ; Mercury (FXS1BY2PGL) ; acrylic acid (J94PBK7X8S) ; itaconic acid (Q4516562YH)
    Sprache Englisch
    Erscheinungsdatum 2020-10-19
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2662125-3
    ISSN 2079-6374 ; 2079-6374
    ISSN (online) 2079-6374
    ISSN 2079-6374
    DOI 10.3390/bios10100147
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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