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Boetje L, Lan X, van Dijken J, Kaastra G, Polhuis M, Loos K. Thiol-Ene Click Cross-linking of Starch Oleate Films for Enhanced Properties. Biomacromolecules 2023; 24:5578-5588. [PMID: 37934174 PMCID: PMC10716852 DOI: 10.1021/acs.biomac.3c00507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/08/2023]
Abstract
Biobased films were synthesized from starch oleate (DS = 2.2) cross-linked with polyethylene glycol with Mn = 2000 and 1000 g · mol-1, and ethylene glycol, all of which were esterified with either lipoic acid (LA) or 3-mercaptopropionic acid (MPA). Cross-linking was achieved through a UV-initiated thiol-ene click, and confirmed by Fourier transform infrared spectroscopy and rheometry. The films exhibit higher degradation temperatures, and an increased degree of crystallinity as cross-linker length increased. The introduction of MPA-based cross-linkers resulted in hydrophilic films, while the contact angle was barely affected by the addition of LA-based cross-linkers. A reduction in maximum strength upon introducing the cross-linkers was observed, while an increase in elongation was observed for most of the LA-based cross-linkers. Our results demonstrate the potential for tuning the mechanical and thermal properties of starch-based films through the cross-linker choice, with some formulations exhibiting increased flexibility that may be well suited for packaging applications.
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Affiliation(s)
- Laura Boetje
- Macromolecular
Chemistry & New Polymeric Materials, Zernike Institute for Advanced
Materials, University of Groningen, Nijenbogh 4, 9747AG Groningen, The Netherlands
| | - Xiaohong Lan
- Macromolecular
Chemistry & New Polymeric Materials, Zernike Institute for Advanced
Materials, University of Groningen, Nijenbogh 4, 9747AG Groningen, The Netherlands
| | - Jur van Dijken
- Macromolecular
Chemistry & New Polymeric Materials, Zernike Institute for Advanced
Materials, University of Groningen, Nijenbogh 4, 9747AG Groningen, The Netherlands
| | - Gerbrich Kaastra
- Hogeschool
Van Hall Larenstein, 8934
CJLeeuwarden, The
Netherlands
| | - Michael Polhuis
- Royal
Avebe U.A., Zernikelaan
8, 9747AA Groningen, The Netherlands
| | - Katja Loos
- Macromolecular
Chemistry & New Polymeric Materials, Zernike Institute for Advanced
Materials, University of Groningen, Nijenbogh 4, 9747AG Groningen, The Netherlands
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Halder S, Mibe Y, Rikimura S, Kuromi K, Sato H, Onoue S. Strategic application of liposomal system to R-α-lipoic acid for improvement of nutraceutical properties. Drug Dev Ind Pharm 2022; 48:239-246. [PMID: 35875919 DOI: 10.1080/03639045.2022.2105865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
R-α-lipoic acid (RLA) and dihydrolipoic acid (DHLA), a reduced form of RLA, are potent endogenous antioxidants that can reduce oxidative damage. Despite their numerous nutraceutical potentials, clinical applications of RLA are still limited due to its poor solubility and stability problems. This study aimed to develop an RLA-loaded liposome (LIP/RLA) for the improvement of nutraceutical properties. LIP/RLA was developed by typical solvent injection method. Uniform liposomes of LIP/RLA were observed by transmission electron microscopy, and the mean particle size was calculated to be ca. 150 nm from the data of dynamic light scattering. LIP/RLA could prevent the degradation of RLA even under acidic condition (pH1.2) possibly due to the encapsulation of RLA into the liposomal structure. In the release test under pH6.8 with lipase, LIP/RLA showed relatively rapid release of RLA, possibly due to the lipolysis of phospholipids by lipase. After oral administration of LIP/RLA (10 mg-RLA/kg, p.o.) in rats, the systemic exposures of RLA and DHLA increased by 2.8- and 5.8-fold, respectively. In a rat model of acute hepatic injury induced by carbon tetrachloride (CCl4) (0.7 mL-CCl4/kg, p.o.), orally-dosed LIP/RLA (3 mg-RLA/kg, p.o.) resulted in 78.7% and 86.4% reductions of plasma alanine aminotransferase, and aspartate aminotransferase, respectively; however, RLA was found to be less effective possibly due to the poor oral absorption. The RLA-loaded liposomal system might be a promising carrier for poorly water-soluble materials with poor stability under acidic conditions, as well as RLA, to improve their oral absorption and nutraceutical properties.
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Affiliation(s)
- Shimul Halder
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yasuhiko Mibe
- BioMedCore, Inc., 75-1, Ono-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0046, Japan
| | - Shingo Rikimura
- BioMedCore, Inc., 75-1, Ono-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0046, Japan
| | - Koichi Kuromi
- BioMedCore, Inc., 75-1, Ono-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0046, Japan
| | - Hideyuki Sato
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Satomi Onoue
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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Banik S, Yamada K, Sato H, Onoue S. Development of Poly(lipoic acid) Nanoparticles with Improved Oral Bioavailability and Hepatoprotective Effects of Quercetin. Mol Pharm 2022; 19:1468-1476. [PMID: 35353535 DOI: 10.1021/acs.molpharmaceut.2c00009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Quercetin (QUE)-loaded poly(lipoic acid) nanoparticles (QUE/pLA) were developed to improve chemical stability in the gastrointestinal (GI) tract, oral bioavailability (BA), and pharmacological properties of QUE. QUE/pLA was prepared by emulsion solvent evaporation with ultrasonication followed by freeze-drying. Its mean particle size was 185 nm, with a high encapsulation efficiency of QUE (84.8%). QUE/pLA exhibited sustained release of QUE with improved dissolution compared with crystalline QUE and significantly enhanced chemical stability under physiological pH in the GI tract. Orally dosed QUE/pLA (50 mg QUE/kg) in rats exhibited significantly prolonged systemic exposure, possibly due to the sustained release of QUE. The oral BAs of QUE in QUE/pLA and crystalline QUE groups were 29 and 0.19%, respectively, suggesting significant enhancement of oral absorbability, likely due to the improved stability and dissolution property of QUE in the GI tracts. In hepatic injury model rats, QUE/pLA (50 mg QUE/kg) led to marked reductions in the plasma biomarker levels of alanine aminotransferase and aspartate aminotransferase by 70 and 46%, respectively, compared with the vehicle group. QUE/pLA also showed improved antioxidant potential as evidenced by the enhanced activities of hepatic glutathione, superoxide dismutase, and a decrease in the level of malondialdehyde, a marker of lipid peroxidation. Based on these findings, QUE/pLA might be a promising option to improve both the nutraceutical and pharmaceutical properties of QUE.
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Affiliation(s)
- Sujan Banik
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Kohei Yamada
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Hideyuki Sato
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Satomi Onoue
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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Dolinina ES, Akimsheva EY, Parfenyuk EV. Development of Novel Silica-based Formulation of α-Lipoic Acid: Evaluation of Photo and Thermal Stability of the Encapsulated Drug. Pharmaceutics 2020; 12:pharmaceutics12030228. [PMID: 32143535 PMCID: PMC7150826 DOI: 10.3390/pharmaceutics12030228] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 12/16/2022] Open
Abstract
Powerful antioxidant α-lipoic acid (LA) is easily degraded under light and heating. This creates difficulties in its manufacture, storage and reduces efficiency and safety of the drug. The purpose of this work was to synthesize novel silica-based composites of LA and evaluate their ability to increase photo and thermal stability of the drug. It was assumed that the drug stabilization can be achieved due to LA-silica interactions. Therefore, the composites of LA with unmodified and organomodified silica matrixes were synthesized by sol-gel method at the synthesis pH below or above the pKa of the drug. The effects of silica matrix modification and the synthesis pH on the LA-silica interactions and kinetics of photo and thermal degradation of LA in the composites were studied. The nature of the interactions was revealed by FTIR spectroscopy. It was found that the rate of thermal degradation of the drug in the composites was significantly lower compared to free LA and mainly determined by the LA-silica interactions. However, photodegradation of LA in the composites under UV irradiation was either close to that for free drug or significantly more rapid. It was shown that kinetics of photodegradation was independent of the interactions and likely determined by physical properties of surface of the composite particles (porosity and reflectivity). The most promising composites for further development of novel silica-based formulations were identified.
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González-Henríquez CM, Pizarro GDC, Sarabia-Vallejos MA, Terraza CA, López-Cabaña ZE. In situ-preparation and characterization of silver-HEMA/PEGDA hydrogel matrix nanocomposites: Silver inclusion studies into hydrogel matrix. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.11.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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