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Ayoub AM, Gutberlet B, Preis E, Abdelsalam AM, Abu Dayyih A, Abdelkader A, Balash A, Schäfer J, Bakowsky U. Parietin Cyclodextrin-Inclusion Complex as an Effective Formulation for Bacterial Photoinactivation. Pharmaceutics 2022; 14:pharmaceutics14020357. [PMID: 35214089 PMCID: PMC8875783 DOI: 10.3390/pharmaceutics14020357] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/27/2022] [Accepted: 02/01/2022] [Indexed: 02/04/2023] Open
Abstract
Multidrug resistance in pathogenic bacteria has become a significant public health concern. As an alternative therapeutic option, antimicrobial photodynamic therapy (aPDT) can successfully eradicate antibiotic-resistant bacteria with a lower probability of developing resistance or systemic toxicity commonly associated with the standard antibiotic treatment. Parietin (PTN), also termed physcion, a natural anthraquinone, is a promising photosensitizer somewhat underrepresented in aPDT because of its poor water solubility and potential to aggregate in the biological environment. This study investigated whether the complexation of PTN with (2-hydroxypropyl)-β-cyclodextrin (HP-β-CD) could increase its solubility, enhance its photophysical properties, and improve its phototoxicity against bacteria. At first, the solubilization behavior and complexation constant of the PTN/HP-β-CD inclusion complexes were evaluated by the phase solubility method. Then, the formation and physicochemical properties of PTN/HP-β-CD complexes were analyzed and confirmed in various ways. At the same time, the photodynamic activity was assessed by the uric acid method. The blue light-mediated photodegradation of PTN in its free and complexed forms were compared. Complexation of PTN increased the aqueous solubility 28-fold and the photostability compared to free PTN. PTN/HP-β-CD complexes reduce the bacterial viability of Staphylococcus saprophyticus and Escherichia coli by > 4.8 log and > 1.0 log after irradiation, respectively. Overall, the low solubility, aggregation potential, and photoinstability of PTN were overcome by its complexation in HP-β-CD, potentially opening up new opportunities for treating infections caused by multidrug-resistant bacteria.
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Affiliation(s)
- Abdallah Mohamed Ayoub
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (A.M.A.); (B.G.); (E.P.); (A.M.A.); (A.A.D.); (A.A.); (J.S.)
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Bernd Gutberlet
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (A.M.A.); (B.G.); (E.P.); (A.M.A.); (A.A.D.); (A.A.); (J.S.)
| | - Eduard Preis
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (A.M.A.); (B.G.); (E.P.); (A.M.A.); (A.A.D.); (A.A.); (J.S.)
| | - Ahmed Mohamed Abdelsalam
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (A.M.A.); (B.G.); (E.P.); (A.M.A.); (A.A.D.); (A.A.); (J.S.)
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Assiut 71524, Egypt
| | - Alice Abu Dayyih
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (A.M.A.); (B.G.); (E.P.); (A.M.A.); (A.A.D.); (A.A.); (J.S.)
| | - Ayat Abdelkader
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (A.M.A.); (B.G.); (E.P.); (A.M.A.); (A.A.D.); (A.A.); (J.S.)
- Assiut International Center of Nanomedicine, Al-Rajhy Liver Hospital, Assiut University, Assiut 71515, Egypt
| | - Amir Balash
- Department of Pharmaceutical Chemistry, University of Marburg, Marbacher Weg 10, 35032 Marburg, Germany;
| | - Jens Schäfer
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (A.M.A.); (B.G.); (E.P.); (A.M.A.); (A.A.D.); (A.A.); (J.S.)
| | - Udo Bakowsky
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (A.M.A.); (B.G.); (E.P.); (A.M.A.); (A.A.D.); (A.A.); (J.S.)
- Correspondence:
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