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Klučáková M, Havlíková M, Mravec F, Pekař M. Diffusion of dyes in polyelectrolyte-surfactant hydrogels. RSC Adv 2022; 12:13242-13250. [PMID: 35520138 PMCID: PMC9062887 DOI: 10.1039/d2ra02379b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 04/25/2022] [Indexed: 11/21/2022] Open
Abstract
In this work, hydrogels formed by interaction of biopolymeric electrolytes and oppositely charged surfactants are studied from the point of view of their ability to incorporate model hydrophobic dyes in their micelle-like structure. Two types of hydrogels were investigated. The first type was based on cationized dextran cross-linked by sodium dodecylsulphate. The second type was prepared by interactions of hyaluronan with carbethoxypendecinium bromide (septonex). Nile red and Atto488 were used as model dyes for the diffusion experiments. The dyes were dissolved in two different media: surfactant and physiological saline. The diffusion of dyes into hydrogel was monitored over time. Effective diffusion coefficients were determined. It was found that their values are strongly influenced by the hydrogel character, the types of dye used and the solvent. The obtained effective coefficients were higher in comparison with the values determined for the diffusion in the opposite direction (release from the hydrogel). The dyes are presented as free in physiological saline and in the form of micelles or micelle aggregates in surfactants. During diffusion into the hydrogel, they can be gradually incorporated in a "pearl necklace structure" which suppresses their mobility. In contrast, this partial immobilization of dyes can increase the concentration gradient which is a driving force of diffusion. Also, the gradual incorporation of dyes into hydrogel structures influences the values of the effective diffusion coefficients.
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Affiliation(s)
- Martina Klučáková
- Brno University of Technology, Faculty of Chemistry Purkyňova 118 612 00 Brno Czech Republic
| | - Martina Havlíková
- Brno University of Technology, Faculty of Chemistry Purkyňova 118 612 00 Brno Czech Republic
| | - Filip Mravec
- Brno University of Technology, Faculty of Chemistry Purkyňova 118 612 00 Brno Czech Republic
| | - Miloslav Pekař
- Brno University of Technology, Faculty of Chemistry Purkyňova 118 612 00 Brno Czech Republic
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Kuznetsova DA, Gabdrakhmanov DR, Kuznetsov DM, Lukashenko SS, Zakharov VM, Sapunova AS, Amerhanova SK, Lyubina AP, Voloshina AD, Salakhieva DV, Zakharova LY. Polymer-Colloid Complexes Based on Cationic Imidazolium Amphiphile, Polyacrylic Acid and DNA Decamer. Molecules 2021; 26:2363. [PMID: 33921656 PMCID: PMC8072887 DOI: 10.3390/molecules26082363] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/31/2021] [Accepted: 04/15/2021] [Indexed: 11/16/2022] Open
Abstract
The solution behavior and physicochemical characteristics of polymer-colloid complexes based on cationic imidazolium amphiphile with a dodecyl tail (IA-12) and polyacrylic acid (PAA) or DNA decamer (oligonucleotide) were evaluated using tensiometry, conductometry, dynamic and electrophoretic light scattering and fluorescent spectroscopy and microscopy. It has been established that PAA addition to the surfactant system resulted in a ca. 200-fold decrease in the aggregation threshold of IA-12, with the hydrodynamic diameter of complexes ranging within 100-150 nm. Electrostatic forces are assumed to be the main driving force in the formation of IA-12/PAA complexes. Factors influencing the efficacy of the complexation of IA-12 with oligonucleotide were determined. The nonconventional mode of binding with the involvement of hydrophobic interactions and the intercalation mechanism is probably responsible for the IA-12/oligonucleotide complexation, and a minor contribution of electrostatic forces occurred. The latter was supported by zeta potential measurements and the gel electrophoresis technique, which demonstrated the low degree of charge neutralization of the complexes. Importantly, cellular uptake of the IA-12/oligonucleotide complex was confirmed by fluorescence microscopy and flow cytometry data on the example of M-HeLa cells. While single IA-12 samples exhibit roughly similar cytotoxicity, IA-12-oligonucleotide complexes show a selective effect toward M-HeLa cells (IC50 1.1 µM) compared to Chang liver cells (IC50 23.1 µM).
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Affiliation(s)
- Darya A. Kuznetsova
- FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Institute of Organic and Physical Chemistry, Arbuzov str. 8, 420088 Kazan, Russia; (D.A.K.); (D.R.G.); (D.M.K.); (S.S.L.); (A.S.S.); (S.K.A.); (A.P.L.); (A.D.V.)
| | - Dinar R. Gabdrakhmanov
- FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Institute of Organic and Physical Chemistry, Arbuzov str. 8, 420088 Kazan, Russia; (D.A.K.); (D.R.G.); (D.M.K.); (S.S.L.); (A.S.S.); (S.K.A.); (A.P.L.); (A.D.V.)
| | - Denis M. Kuznetsov
- FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Institute of Organic and Physical Chemistry, Arbuzov str. 8, 420088 Kazan, Russia; (D.A.K.); (D.R.G.); (D.M.K.); (S.S.L.); (A.S.S.); (S.K.A.); (A.P.L.); (A.D.V.)
| | - Svetlana S. Lukashenko
- FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Institute of Organic and Physical Chemistry, Arbuzov str. 8, 420088 Kazan, Russia; (D.A.K.); (D.R.G.); (D.M.K.); (S.S.L.); (A.S.S.); (S.K.A.); (A.P.L.); (A.D.V.)
| | - Valery M. Zakharov
- Kazan National Research Technological University, Karl Marx str., 68, 420015 Kazan, Russia;
| | - Anastasiia S. Sapunova
- FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Institute of Organic and Physical Chemistry, Arbuzov str. 8, 420088 Kazan, Russia; (D.A.K.); (D.R.G.); (D.M.K.); (S.S.L.); (A.S.S.); (S.K.A.); (A.P.L.); (A.D.V.)
| | - Syumbelya K. Amerhanova
- FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Institute of Organic and Physical Chemistry, Arbuzov str. 8, 420088 Kazan, Russia; (D.A.K.); (D.R.G.); (D.M.K.); (S.S.L.); (A.S.S.); (S.K.A.); (A.P.L.); (A.D.V.)
| | - Anna P. Lyubina
- FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Institute of Organic and Physical Chemistry, Arbuzov str. 8, 420088 Kazan, Russia; (D.A.K.); (D.R.G.); (D.M.K.); (S.S.L.); (A.S.S.); (S.K.A.); (A.P.L.); (A.D.V.)
| | - Alexandra D. Voloshina
- FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Institute of Organic and Physical Chemistry, Arbuzov str. 8, 420088 Kazan, Russia; (D.A.K.); (D.R.G.); (D.M.K.); (S.S.L.); (A.S.S.); (S.K.A.); (A.P.L.); (A.D.V.)
| | - Diana V. Salakhieva
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, Kremlyovskaya St. 18, 420008 Kazan, Russia;
| | - Lucia Ya. Zakharova
- FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Institute of Organic and Physical Chemistry, Arbuzov str. 8, 420088 Kazan, Russia; (D.A.K.); (D.R.G.); (D.M.K.); (S.S.L.); (A.S.S.); (S.K.A.); (A.P.L.); (A.D.V.)
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Hydrogels as Drug Delivery Systems: A Review of Current Characterization and Evaluation Techniques. Pharmaceutics 2020; 12:pharmaceutics12121188. [PMID: 33297493 PMCID: PMC7762425 DOI: 10.3390/pharmaceutics12121188] [Citation(s) in RCA: 140] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/15/2022] Open
Abstract
Owing to their tunable properties, controllable degradation, and ability to protect labile drugs, hydrogels are increasingly investigated as local drug delivery systems. However, a lack of standardized methodologies used to characterize and evaluate drug release poses significant difficulties when comparing findings from different investigations, preventing an accurate assessment of systems. Here, we review the commonly used analytical techniques for drug detection and quantification from hydrogel delivery systems. The experimental conditions of drug release in saline solutions and their impact are discussed, along with the main mathematical and statistical approaches to characterize drug release profiles. We also review methods to determine drug diffusion coefficients and in vitro and in vivo models used to assess drug release and efficacy with the goal to provide guidelines and harmonized practices when investigating novel hydrogel drug delivery systems.
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Kuznetsova DA, Gabdrakhmanov DR, Kuznetsov DM, Lukashenko SS, Zakharova LY. Polymer Colloid Complexes Based on an Imidazolium Surfactant and Polyacrylic Acid. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420110199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Klučáková M. Agarose Hydrogels Enriched by Humic Acids as the Complexation Agent. Polymers (Basel) 2020; 12:polym12030687. [PMID: 32204449 PMCID: PMC7182926 DOI: 10.3390/polym12030687] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 01/27/2023] Open
Abstract
The transport properties of agarose hydrogels enriched by humic acids were studied. Methylene blue, rhodamine 6G and Cu(II) ions were incorporated into hydrogel as diffusion probes, and then their release into water was monitored. Cu(II) ions as well as both the dyes studied in this work have high affinity to humic substances and their interactions strongly affected their diffusion in hydrogels. It was confirmed that humic acids retarded the transport of diffusion probes. Humic acids' enrichment caused the decrease in the values of effective diffusion coefficients due to their complexation with diffusion probes. In general, the diffusion of dyes was more affected by the complexation with humic acids in comparison with Cu(II) ions. The effect of complexation was selective for the particular diffusion probe. The strongest effect was obtained for the diffusion of methylene blue. It was assumed that metal ions interacted preferentially with acidic functional groups. In contrast to Cu(II) ions, dyes can interact with acidic functional groups, and the condensed cyclic structures of the dye probes supported their interactions with the hydrophobic domains of humic substances.
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Affiliation(s)
- Martina Klučáková
- Faculty of Chemistry, Brno University of Technology, Purkyňova 118/464, 612 00 Brno, Czech Republic
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