1
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Tsigara AS, Banti CN, Hatzidimitriou A, Hadjikakou SK. Tetracycline: structural characterization and antimicrobial properties of its water-soluble di-anionic bi-sodium salt. Dalton Trans 2024; 53:12080-12089. [PMID: 38869456 DOI: 10.1039/d4dt01384k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
The new water-soluble di-anionic bi-sodium salt of tetracycline (TC), an antibiotic in clinical use, with the formula {[TC]2-[Na+(MeOH)(H2O)] [Na+]·(H2O)}n (TCNa) was synthesized. The compound was characterized by m.p., attenuated total reflectance-Fourier transform infra-red (ATR-FTIR) spectroscopy, and ultraviolet (UV) and proton nuclear magnetic resonance (1H NMR) spectroscopy in the solid state and in solution. The molecular weight (MW) was determined by cryoscopy. The crystal structure of TCNa was also determined by X-ray crystallography. The antibacterial activity of TCNa was evaluated against the bacterial species Pseudomonas aeruginosa (P. aeruginosa), Escherichia coli (E. coli), Staphylococcus epidermidis (S. epidermidis) and Staphylococcus aureus (S. aureus) by means of minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and inhibition zones (IZs). Moreover, the ability of the compound to eradicate biofilm formation was also evaluated. The results are compared with those obtained for the commercially available drug TCH2. The in vitro and in vivo toxicities of TCNa were tested against human corneal epithelial cells (HCECs) and Artemia salina.
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Affiliation(s)
- Afroditi S Tsigara
- Biological Inorganic Chemistry Laboratory, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
| | - Christina N Banti
- Biological Inorganic Chemistry Laboratory, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
| | - Antonios Hatzidimitriou
- Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Greece
| | - Sotiris K Hadjikakou
- Biological Inorganic Chemistry Laboratory, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
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2
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Kum OK, Chan KM, Morningstar-Kywi N, MacKay JA, Haworth IS. Pharmacokinetic model of human exposure to ciprofloxacin through consumption of fish. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 106:104359. [PMID: 38163528 DOI: 10.1016/j.etap.2023.104359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/28/2023] [Indexed: 01/03/2024]
Abstract
Fluoroquinolones are broad-spectrum antibiotics that accumulate in the environment. To assess human exposure through the food chain, we developed a pharmacokinetic model of fluoroquinolone accumulation in fish and a human pharmacokinetic model to predict gastrointestinal concentrations of ciprofloxacin, a common fluoroquinolone, following consumption of fish. At 70 ng/L ciprofloxacin, the average in North American surface waters, the fish steady-state concentration was calculated to be 7.5 × 10-6 µg/g. Upon human consumption of the FDA-recommended portion of 113 g of fish containing this ciprofloxacin level, the predicted human intestinal concentration was 2 × 10-6 µg/mL. At 4 × 106 ng/L (4 µg/mL) ciprofloxacin, the highest recorded environmental measurement, these numbers were 0.42 µg/g in fish and 0.1 µg/mL in the human intestine. Thus, based on the ciprofloxacin MIC for E. coli of 0.13 µg/mL, background environmental ciprofloxacin levels are unlikely to be problematic, but environmental pollution can result in high intestinal levels that may cause gut dysbiosis and antibiotic resistance.
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Affiliation(s)
- Oguz Kaan Kum
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, 1985 Zonal Avenue, Los Angeles, CA 90089, United States
| | - Karen M Chan
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, 1985 Zonal Avenue, Los Angeles, CA 90089, United States
| | - Noam Morningstar-Kywi
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, 1985 Zonal Avenue, Los Angeles, CA 90089, United States; Simulations Plus, Inc., Lancaster, CA 93534, United States
| | - J Andrew MacKay
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, 1985 Zonal Avenue, Los Angeles, CA 90089, United States
| | - Ian S Haworth
- Department of Pharmacology and Pharmaceutical Sciences, Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences, University of Southern California, 1985 Zonal Avenue, Los Angeles, CA 90089, United States.
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3
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Sikder S, Toha M, Anik AH, Sultan MB, Alam M, Parvin F, Tareq SM. A comprehensive review on the fate and impact of antibiotic residues in the environment and public health: A special focus on the developing countries. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2024; 96:e10987. [PMID: 38342763 DOI: 10.1002/wer.10987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/07/2024] [Accepted: 01/08/2024] [Indexed: 02/13/2024]
Abstract
The widespread application of antibiotics in human and veterinary medicine has led to the pervasive presence of antibiotic residues in the environment, posing a potential hazard to public health. This comprehensive review aims to scrutinize the fate and impact of antibiotic residues, with a particular focus on the context of developing nations. The investigation delves into the diverse pathways facilitating the entry of antibiotics into the environment and meticulously examines their effects on human health. The review delineates the current state of antibiotic residues, evaluates their exposure in developing nations, and elucidates existing removal methodologies. Additionally, it probes into the factors contributing to the endurance and ecotoxicity of antibiotic residues, correlating these aspects with usage rates and associated mortalities in these nations. The study also investigates removal techniques for antibiotic residues, assessing their efficiency in environmental compartments. The concurrent emergence of antibiotic-resistant bacteria, engendered by antibiotic residues, and their adverse ecological threats underscore the necessity for enhanced regulations, vigilant surveillance programs, and the adoption of sustainable alternatives. The review underlines the pivotal role of public education and awareness campaigns in promoting responsible antibiotic use. The synthesis concludes with strategic recommendations, strengthening the imperative for further research encompassing comprehensive monitoring, ecotoxicological effects, alternative strategies, socio-economic considerations, and international collaborations, all aimed at mitigating the detrimental effects of antibiotic residues on human health and the environment. PRACTITIONER POINTS: Antibiotic residues are widely distributed in different environmental compartments. Developing countries use more antibiotics than developed countries. Human and veterinary wastes are one of the most responsible sources of antibiotic pollution. Antibiotics interact with biological systems and trigger pharmacological reactions at low doses. Antibiotics can be removed using modern biological, chemical, and physical-chemical techniques.
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Affiliation(s)
- Sadia Sikder
- Department of Environmental Science, Bangladesh University of Professionals (BUP), Bangladesh
- Department of Environmental Science and Disaster Management, Daffodil International University, Birulia, Savar, Dhaka, Bangladesh
| | - Mohammad Toha
- Department of Environmental Science, Bangladesh University of Professionals (BUP), Bangladesh
| | - Amit Hasan Anik
- Department of Environmental Science, Bangladesh University of Professionals (BUP), Bangladesh
| | - Maisha Binte Sultan
- Department of Environmental Science, Bangladesh University of Professionals (BUP), Bangladesh
| | - Mahbub Alam
- Department of Environmental Science, Bangladesh University of Professionals (BUP), Bangladesh
- Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - Fahmida Parvin
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka, Bangladesh
| | - Shafi M Tareq
- Department of Environmental Science, Bangladesh University of Professionals (BUP), Bangladesh
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka, Bangladesh
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4
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Muñoz-Sánchez S, Heredero-Bermejo I, de la Mata FJ, García-Gallego S. Bifunctional Carbosilane Dendrimers for the Design of Multipurpose Hydrogels with Antibacterial Action. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:266-274. [PMID: 38222939 PMCID: PMC10783294 DOI: 10.1021/acs.chemmater.3c02027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 01/16/2024]
Abstract
The emergence of antibiotic resistance is a serious global health problem. There is an incessant demand for new antimicrobial drugs and materials that can address this global issue from different angles. Dendritic hydrogels have appeared as a promising strategy. A family of bifunctional amphiphilic carbosilane dendrimers was designed and employed as nanosized cross-linking points for the synthesis of high-swelling hydrogels using the highly efficient Thiol-Ene click reaction for their preparation. Both stoichiometric and off-stoichiometric conditions were studied, generating hydrogels with pendant hydroxyl or alkene moieties. These hydrogels were found to be tunable antibacterial materials. They can easily be postmodified with relevant antibiotic moieties through covalent attachment on the hydroxyl or alkene pendant groups, generating ammonium-decorated networks with temperature and pH-responsive properties. Additionally, they can efficiently encapsulate drugs with poor solubility in water, like ciprofloxacin, and perform a sustained release over time, as demonstrated in preliminary assays against Staphylococcus aureus.
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Affiliation(s)
- Silvia Muñoz-Sánchez
- University
of Alcala, Department of Organic and Inorganic
Chemistry and Research Institute in Chemistry “Andrés
M. Del Río” (IQAR), 28805 Madrid, Spain
| | | | - Francisco Javier de la Mata
- University
of Alcala, Department of Organic and Inorganic
Chemistry and Research Institute in Chemistry “Andrés
M. Del Río” (IQAR), 28805 Madrid, Spain
- Networking
Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Institute
Ramón y Cajal for Health Research (IRYCIS), 28034 Madrid, Spain
| | - Sandra García-Gallego
- University
of Alcala, Department of Organic and Inorganic
Chemistry and Research Institute in Chemistry “Andrés
M. Del Río” (IQAR), 28805 Madrid, Spain
- Networking
Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Institute
Ramón y Cajal for Health Research (IRYCIS), 28034 Madrid, Spain
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5
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Hamed R, Abu Alata W, Abu-Sini M, Abulebdah DH, Hammad AM, Aburayya R. Development and Comparative Evaluation of Ciprofloxacin Nanoemulsion-Loaded Bigels Prepared Using Different Ratios of Oleogel to Hydrogels. Gels 2023; 9:592. [PMID: 37504471 PMCID: PMC10379317 DOI: 10.3390/gels9070592] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023] Open
Abstract
Nanoemulsions and bigels are biphasic delivery systems that can be used for topical applications. The aim of this study was to incorporate an oil-in-water ciprofloxacin hydrochloride nanoemulsion (CIP.HCl NE) into two types of bigels, Type I (oleogel (OL)-in-hydrogel (WH)) and Type II (WH-in-OL) to enhance drug penetration into skin and treat topical bacterial infections. Bigels were prepared at various ratios of OL and WH (1:1, 1:2, and 1:4). Initially, CIP.HCl NE was prepared and characterized in terms of droplet size, zeta potential, polydispersity index, morphology, and thermodynamic and chemical stability. Then CIP.HCl NE was dispersed into the OL or WH phase of the bigel. The primary physical stability studies showed that Type I bigels were physically stable, showing no phase separation. Whereas Type II bigels were physically unstable, hence excluded from the study. Type I bigels were subjected to microstructural, rheological, in vitro release, antimicrobial, and stability studies. The microscopic images showed a highly structured bigel network with nanoemulsion droplets dispersed within the bigel network. Additionally, bigels exhibited pseudoplastic flow and viscoelastic properties. A complete drug release was achieved after 4-5 h. The in vitro and ex vivo antimicrobial studies revealed that bigels exhibited antimicrobial activity against different bacterial strains. Moreover, stability studies showed that the rheological properties and physical and chemical stability varied based on the bigel composition over three months. Therefore, the physicochemical and rheological properties, drug release rate, and antimicrobial activity of Type I bigels could be modified by altering the OL to WH ratio and the phase in which the nanoemulsion dispersed in.
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Affiliation(s)
- Rania Hamed
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan
| | - Wala'a Abu Alata
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan
| | - Mohammad Abu-Sini
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan
| | - Dina H Abulebdah
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan
| | - Alaa M Hammad
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan
| | - Rafa Aburayya
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan
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6
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Stancheva R, Paunova-Krasteva T, Topouzova-Hristova T, Stoitsova S, Petrov P, Haladjova E. Ciprofloxacin-Loaded Mixed Polymeric Micelles as Antibiofilm Agents. Pharmaceutics 2023; 15:pharmaceutics15041147. [PMID: 37111633 PMCID: PMC10145464 DOI: 10.3390/pharmaceutics15041147] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 03/29/2023] [Accepted: 04/03/2023] [Indexed: 04/29/2023] Open
Abstract
In this work, mixed polymeric micelles (MPMs) based on a cationic poly(2-(dimethylamino)ethyl methacrylate)-b-poly(ε-caprolactone)-b-poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA29-b-PCL70-b-PDMAEMA29) and a non-ionic poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (PEO99-b-PPO67-b-PEO99) triblock copolymers, blended at different molar ratios, were developed. The key physicochemical parameters of MPMs, including size, size distribution, and critical micellar concentration (CMC), were evaluated. The resulting MPMs are nanoscopic with a hydrodynamic diameter of around 35 nm, and the ζ-potential and CMC values strongly depend on the MPM's composition. Ciprofloxacin (CF) was solubilized by the micelles via hydrophobic interaction with the micellar core and electrostatic interaction between the polycationic blocks, and the drug localized it, to some extent, in the micellar corona. The effect of a polymer-to-drug mass ratio on the drug-loading content (DLC) and encapsulation efficiency (EE) of MPMs was assessed. MPMs prepared at a polymer-to-drug mass ratio of 10:1 exhibited very high EE and a prolonged release profile. All micellar systems demonstrated their capability to detach pre-formed Gram-positive and Gram-negative bacterial biofilms and significantly reduced their biomass. The metabolic activity of the biofilm was strongly suppressed by the CF-loaded MPMs indicating the successful drug delivery and release. The cytotoxicity of empty and CF-loaded MPMs was evaluated. The test reveals composition-dependent cell viability without cell destruction or morphological signs of cell death.
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Affiliation(s)
- Rumena Stancheva
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. bl. 103-A, 1113 Sofia, Bulgaria
| | - Tsvetelina Paunova-Krasteva
- The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Akad. G. Bonchev St. bl. 26, 1113 Sofia, Bulgaria
| | - Tanya Topouzova-Hristova
- Faculty of Biology, Sofia University "St. K. Ohridski", 8 D. Tsankov Blvd., 1164 Sofia, Bulgaria
| | - Stoyanka Stoitsova
- The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Akad. G. Bonchev St. bl. 26, 1113 Sofia, Bulgaria
| | - Petar Petrov
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. bl. 103-A, 1113 Sofia, Bulgaria
| | - Emi Haladjova
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St. bl. 103-A, 1113 Sofia, Bulgaria
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7
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Singh S, Lundborg CS, Diwan V. Factors influencing the adsorption of antibiotics onto activated carbon in aqueous media. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:2260-2269. [PMID: 36378179 DOI: 10.2166/wst.2022.334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Widespread use of antibiotics for treating human and animal ailments has increased their discharge in the environment through excreta. Moreover, unscientific disposal of unused antibiotics has further increased their presence in the environmental matrices. Thus, occurrence of used and/or discarded antibiotics in water resources is becoming a growing concern across the globe. Antibiotics and their residues in the aquatic environment are emerging contaminants which pose a serious threat to the aquatic biota as well as human beings by enhancing antibiotic resistance. Various methods are being adopted for the removal of these contaminants. Adsorption over activated carbon is one such promising method which is environmentally friendly, cost-effective, and efficient. However, there are various factors which affect the overall process efficiency, such as, properties of activated carbon/antibiotics/reaction medium etc. In this article, emphasis has been laid down on evaluating these factors, so that the experimental procedures may be optimized to obtain the highest possible removal efficiency for antibiotics in the aqueous media.
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Affiliation(s)
- Surya Singh
- Division of Environmental Monitoring and Exposure Assessment (Water & Soil), ICMR - National Institute for Research in Environmental Health, Bhopal 462 030, India E-mail:
| | | | - Vishal Diwan
- Division of Environmental Monitoring and Exposure Assessment (Water & Soil), ICMR - National Institute for Research in Environmental Health, Bhopal 462 030, India E-mail: ; Department of Global Public Health, Karolinska Institutet, Stockholm 171 77, Sweden
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8
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Uhljar LÉ, Alshweiat A, Katona G, Chung M, Radacsi N, Kókai D, Burián K, Ambrus R. Comparison of Nozzle-Based and Nozzle-Free Electrospinning for Preparation of Fast-Dissolving Nanofibers Loaded with Ciprofloxacin. Pharmaceutics 2022; 14:pharmaceutics14081559. [PMID: 36015184 PMCID: PMC9413034 DOI: 10.3390/pharmaceutics14081559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 07/21/2022] [Accepted: 07/26/2022] [Indexed: 11/16/2022] Open
Abstract
The study aimed to prepare ciprofloxacin-loaded polyvinylpyrrolidone electrospun nanofibers for oral drug delivery, using a conventional nozzle-based and a lab-built nozzle-free electrospinning equipment. To produce nanofibers, electrospinning is the process most often used. However, from the industry’s point of view, conventional electrospinning does not have sufficiently high productivity. By omitting the nozzle, productivity can be increased, and so the development of nozzle-free processes is worthwhile. In this study, a solution of ciprofloxacin and polyvinylpyrrolidone was electrospun under similar conditions, using both single-nozzle and nozzle-free methods. The two electrospinning methods were compared by investigating the morphological and physicochemical properties, homogeneity, in vitro drug release, and cytotoxicity. The stability of the nanofibers was monitored from different aspects in a 26 month stability study. The results showed that the use of the nozzle-free electrospinning was preferable due to a higher throughput, improved homogeneity, and the enhanced stability of nanofiber mats, compared to the nozzle-based method. Nevertheless, fast dissolving nanofibers loaded with poorly water-soluble ciprofloxacin were produced by both electrospinning methods. The beneficial properties of these nanofibers can be exploited in innovative drug development; e.g., nanofibers can be formulated into orodispersible films or per os tablets.
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Affiliation(s)
- Luca Éva Uhljar
- Faculty of Pharmacy, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös Street 6, 6720 Szeged, Hungary; (L.É.U.); (G.K.)
| | - Areen Alshweiat
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, The Hashemite University, Zarqa 13133, Jordan;
| | - Gábor Katona
- Faculty of Pharmacy, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös Street 6, 6720 Szeged, Hungary; (L.É.U.); (G.K.)
| | - Michael Chung
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, King’s Buildings, Edinburgh EH9 3FB, UK; (M.C.); (N.R.)
| | - Norbert Radacsi
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, King’s Buildings, Edinburgh EH9 3FB, UK; (M.C.); (N.R.)
| | - Dávid Kókai
- Department of Medical Microbiology and Immunobiology, University of Szeged, Dóm Square 10, 6720 Szeged, Hungary; (D.K.); (K.B.)
| | - Katalin Burián
- Department of Medical Microbiology and Immunobiology, University of Szeged, Dóm Square 10, 6720 Szeged, Hungary; (D.K.); (K.B.)
| | - Rita Ambrus
- Faculty of Pharmacy, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös Street 6, 6720 Szeged, Hungary; (L.É.U.); (G.K.)
- Correspondence:
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9
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Hickey A, Merz J, Al Mamari HH, Friedrich A, Marder TB, McGlacken GP. Iridium-Catalyzed Borylation of 6-Fluoroquinolines: Access to 6-Fluoroquinolones. J Org Chem 2022; 87:9977-9987. [PMID: 35839386 PMCID: PMC9368603 DOI: 10.1021/acs.joc.2c00973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
The Ir-catalyzed C–H borylation of fluoroquinolines
has
been realized. The quinoline boronic ester formed undergoes a range
of
important transformations of relevance to medicinal chemistry. Judicious
choice of the substituent at C4 on the quinoline facilitated the unmasking
of a fluoroquinolone—the core structure of many antibiotics.
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Affiliation(s)
- Aobha Hickey
- School of Chemistry & Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 YN60, Ireland
| | - Julia Merz
- Institute for Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Hamad H Al Mamari
- Institute for Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.,Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al Khoudh 123 Muscat, Sultanate of Oman
| | - Alexandra Friedrich
- Institute for Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Todd B Marder
- Institute for Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Gerard P McGlacken
- School of Chemistry & Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 YN60, Ireland.,Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 YN60, Ireland
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10
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Pedro SN, Gomes ATPC, Oskoei P, Oliveira H, Almeida A, Freire MG, Silvestre AJD, Freire CSR. Boosting antibiotics performance by new formulations with deep eutectic solvents. Int J Pharm 2022; 616:121566. [PMID: 35151818 DOI: 10.1016/j.ijpharm.2022.121566] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/01/2022] [Accepted: 02/07/2022] [Indexed: 11/26/2022]
Abstract
The critical scenario of antimicrobial resistance to antibiotics highlights the need for improved therapeutics and/or formulations. Herein, we demonstrate that deep eutectic solvents (DES) formulations are very promising to remarkably improve the solubility, stability and therapeutic efficacy of antibiotics, such as ciprofloxacin. DES aqueous solutions enhance the solubility of ciprofloxacin up to 430-fold while extending the antibiotic stability. The developed formulations can improve, by 2 to 4-fold, the susceptibility of Gram-negative (Escherichia coli and Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus) bacteria to the antibiotic. They also improve the therapeutic efficacy at concentrations where bacteria present resistance, without promoting tolerance development to ciprofloxacin. Furthermore, the incorporation of DES decreases the toxicity of ciprofloxacin towards immortalized human epidermal keratinocytes (HaCat cells). The results herein reveal the pioneering use of DES in fluoroquinolone-based formulations and their impact on the antibiotic's characteristics and on its therapeutic action.
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Affiliation(s)
- Sónia N Pedro
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Ana T P C Gomes
- CESAM, Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Párástu Oskoei
- CESAM, Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Helena Oliveira
- CESAM, Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Adelaide Almeida
- CESAM, Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Mara G Freire
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Armando J D Silvestre
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Carmen S R Freire
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
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11
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Antibacterial nanofibers of pullulan/tetracycline-cyclodextrin inclusion complexes for Fast-Disintegrating oral drug delivery. J Colloid Interface Sci 2021; 610:321-333. [PMID: 34923270 DOI: 10.1016/j.jcis.2021.12.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/01/2021] [Accepted: 12/03/2021] [Indexed: 12/16/2022]
Abstract
Tetracycline is a widely used antibiotic suffering from poor water solubility and low bioavailability. Here, hydroxypropyl-beta-cyclodextrin (HPβCD) was used to form inclusion complexes (IC) of tetracycline with 2:1 M ratio (CD:drug). Then, tetracycline-HPβCD-IC was mixed with pullulan- a non-toxic, water-soluble biopolymer - to form nanofibrous webs via electrospinning. The electrospinning of pullulan/tetracycline-HPβCD-IC was yielded into defect-free nanofibers collected in the form of a self-standing and flexible material with the loading capacity of ∼ 7.7 % (w/w). Pullulan/tetracycline nanofibers was also generated as control sample having the same drug loading. Tetracycline was found in the amorphous state in case of pullulan/tetracycline-HPβCD nanofibers due to inclusion complexation. Through inclusion complexation with HPβCD, enhanced aqueous solubility and faster release profile were provided for pullulan/tetracycline-HPβCD-IC nanofibers compared to pullulan/tetracycline one. Additionally, pullulan/tetracycline-HPβCD-IC nanofibers readily disintegrated when wetted with artificial saliva while pullulan/tetracycline nanofibers were not completely absorbed by the same simulate environment. Electrospun nanofibers showed promising antibacterial activity against both gram-positive and gram-negative bacteria. Briefly, our findings indicated that pullulan/tetracycline-HPβCD-IC nanofibers could be an attractive material as orally fast disintegrating drug delivery system for the desired antibiotic treatment thanks to its promising physicochemical and antibacterial properties.
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Abioye A, Naqvi M, Pattni D, Adepoju-Bello AA. Non-intuitive Behavior of Polymer-Ciprofloxacin Nanoconjugate Suspensions: a Tool for Flexible Oral Drug Delivery. AAPS PharmSciTech 2021; 22:229. [PMID: 34467444 DOI: 10.1208/s12249-021-02105-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/31/2021] [Indexed: 12/20/2022] Open
Abstract
Ciprofloxacin (CPX) is prone to spontaneous self-aggregation and formation of supramolecular dimers (π - π stacking) due to its complicated surface chemistry which has been associated with its anomalous solubility and instability in aqueous systems particularly near neutral pH. The surface characteristic of ciprofloxacin was modified through non-intuitive counterion interaction between CPX and diethylaminoethyl dextran (DDEX) to form nanoconjugate assembly. The CPX-DDEX nanoconjugate was confirmed by FTIR, SEM, DSC, TGA, and 1H-NMR. The DSC thermograms showed a remarkable 20% reduction in the melting temperature (Tm) of CPX from 268.57±1.11°C to 214.36±1.0211°C and 78% reduction in enthalpy of fusion (ΔHf) from 59.84 kJ/mol (180.59 J/g) to 12.90 kJ/mol (38.92 J/g), indicating increased solubility and dissolution efficiency. DDEX polymer alone exhibited pseudoplastic characteristics however with more viscous rather than elastic response, while the CPX-DDEX nanoconjugate suspensions exhibited remarkable elastic behavior with significantly increased storage modulus (G') thus controlling and extending the release of CPX. The reconstituted freeze-dried CPX-DDEX nanoconjugate suspension was chemically stable throughout the 90-day study both in the refrigerator and at controlled room temperature, while the aqueous suspension of pure CPX without DDEX was only stable for 72 and 24 h, respectively. The dissolution efficiency of the CPX-DDEX nanoconjugate suspensions increased with increasing molar concentration of DDEX to a maximum of 100% at 50 μM of DDEX followed by a remarkable decrease within the 3-week study. It was apparent that the dissolution efficiency was governed by a critical balance between the CPX solubility and the viscoelastic characteristics of the polymeric nanoassembly. This study demonstrates the potential application of polymer-drug nanoconjugation formulation design to stabilization and flexible delivery of CPX from aqueous suspension systems. Graphical abstract.
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Hernández P, Aguilar‐Lira GY, Islas G, Rodriguez JA. Development of a New Voltammetric Methodology for the Determination of Ciprofloxacin in Beef Samples Using a Carbon Paste Electrode Modified with Nafion and Fullerenes. ELECTROANAL 2021. [DOI: 10.1002/elan.202060525] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P. Hernández
- Universidad Politécnica de Francisco I. Madero Área de Energía, Domicilio Conocido Tepatepec C.P. 42640 Hidalgo México
| | - G. Y. Aguilar‐Lira
- Universidad Autónoma del Estado de Hidalgo Carretera Pachuca-Tulancingo Área Académica de Química, Km 4.5 Col. Carboneras, Mineral de la Reforma C.P. 42184 Hidalgo México
| | - G. Islas
- Universidad Politécnica de Francisco I. Madero Área de Energía, Domicilio Conocido Tepatepec C.P. 42640 Hidalgo México
| | - J. A. Rodriguez
- Universidad Autónoma del Estado de Hidalgo Carretera Pachuca-Tulancingo Área Académica de Química, Km 4.5 Col. Carboneras, Mineral de la Reforma C.P. 42184 Hidalgo México
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Flynn J, Ryan A, Hudson SP. Pre-formulation and delivery strategies for the development of bacteriocins as next generation antibiotics. Eur J Pharm Biopharm 2021; 165:149-163. [PMID: 34020021 DOI: 10.1016/j.ejpb.2021.05.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 05/06/2021] [Accepted: 05/12/2021] [Indexed: 10/21/2022]
Abstract
Bacteriocins, a class of antimicrobial peptide produced by bacteria, may offer a potential alternative to traditional antibiotics, an important step towards mitigating the ever-increasing antimicrobial resistance crisis. They are active against a range of clinically relevant Gram-positive and Gram-negative bacteria. Bacteriocins have been discussed in the literature for over a century. Although they are used as preservatives in food, no medicine based on their antimicrobial activity exists on the market today. In order to formulate them into clinical antibiotics, pre-formulation studies on their biophysical and physicochemical properties that will influence their activity in vivo and their stability during manufacture must be elucidated. Thermal, pH and enzymatic stability of bacteriocins are commonly studied and regularly reported in the literature. Solubility, permeability and aggregation properties on the other hand are less frequently reported for many bacteriocins, which may contribute to their poor clinical progression. Promising cytotoxicity studies report that bacteriocins exhibit few cytotoxic effects on a variety of mammalian cell lines, at active concentrations. This review highlights the lack of quantitative data and in many cases even qualitative data, on bacteriocins' solubility, stability, aggregation, permeability and cytotoxicity. The formulation strategies that have been explored to date, proposed routes of administration, trends in in vitro/in vivo behaviour and efforts in clinical development are discussed. The future promise of bacteriocins as a new generation of antibiotics may require tailored local delivery strategies to fulfil their potential as a force to combat antimicrobial-resistant bacterial infections.
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Affiliation(s)
- James Flynn
- Department of Chemical Sciences, SSPC, the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Ireland
| | - Aoibhín Ryan
- Department of Chemical Sciences, SSPC, the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Ireland
| | - Sarah P Hudson
- Department of Chemical Sciences, SSPC, the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Ireland.
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Uhljar LÉ, Kan SY, Radacsi N, Koutsos V, Szabó-Révész P, Ambrus R. In Vitro Drug Release, Permeability, and Structural Test of Ciprofloxacin-Loaded Nanofibers. Pharmaceutics 2021; 13:pharmaceutics13040556. [PMID: 33921031 PMCID: PMC8071406 DOI: 10.3390/pharmaceutics13040556] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 12/16/2022] Open
Abstract
Nanofibers of the poorly water-soluble antibiotic ciprofloxacin (CIP) were fabricated in the form of an amorphous solid dispersion by using poly(vinyl pyrrolidone) as a polymer matrix, by the low-cost electrospinning method. The solubility of the nanofibers as well as their in vitro diffusion were remarkably higher than those of the CIP powder or the physical mixture of the two components. The fiber size and morphology were optimized, and it was found that the addition of the CIP to the electrospinning solution decreased the nanofiber diameter, leading to an increased specific surface area. Structural characterization confirmed the interactions between the drug and the polymer and the amorphous state of CIP inside the nanofibers. Since the solubility of CIP is pH-dependent, the in vitro solubility and dissolution studies were executed at different pH levels. The nanofiber sample with the finest morphology demonstrated a significant increase in solubility both in water and pH 7.4 buffer. Single medium and two-stage biorelevant dissolution studies were performed, and the release mechanism was described by mathematical models. Besides, in vitro diffusion from pH 6.8 to pH 7.4 notably increased when compared with the pure drug and physical mixture. Ciprofloxacin-loaded poly(vinyl pyrrolidone) (PVP) nanofibers can be considered as fast-dissolving formulations with improved physicochemical properties.
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Affiliation(s)
- Luca Éva Uhljar
- Interdisciplinary Excellence Centre, Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös Street 6, H-6720 Szeged, Hungary; (L.É.U.); (P.S.-R.)
| | - Sheng Yuan Kan
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, King’s Buildings, Edinburgh EH9 3FB, UK; (S.Y.K.); (N.R.); (V.K.)
| | - Norbert Radacsi
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, King’s Buildings, Edinburgh EH9 3FB, UK; (S.Y.K.); (N.R.); (V.K.)
| | - Vasileios Koutsos
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, King’s Buildings, Edinburgh EH9 3FB, UK; (S.Y.K.); (N.R.); (V.K.)
| | - Piroska Szabó-Révész
- Interdisciplinary Excellence Centre, Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös Street 6, H-6720 Szeged, Hungary; (L.É.U.); (P.S.-R.)
| | - Rita Ambrus
- Interdisciplinary Excellence Centre, Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös Street 6, H-6720 Szeged, Hungary; (L.É.U.); (P.S.-R.)
- Correspondence:
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Lage ALA, Marciano AC, Venâncio MF, da Silva MAN, Martins DCDS. Water-soluble manganese porphyrins as good catalysts for cipro- and levofloxacin degradation: Solvent effect, degradation products and DFT insights. CHEMOSPHERE 2021; 268:129334. [PMID: 33360938 DOI: 10.1016/j.chemosphere.2020.129334] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 12/05/2020] [Accepted: 12/13/2020] [Indexed: 06/12/2023]
Abstract
Synthetic manganese porphyrins (MnPs), in the presence of oxidants, were employed for the degradation of fluoroquinolone antibiotics. Ciprofloxacin (CIP) and levofloxacin (LEV) degradation by iodosylbenzene, iodobenzene diacetate, H2O2 and meta-chloroperbenzoic acid using water-soluble MnP catalysts yielded thirteen and nine products, respectively, seven of which have been proposed for the first time. The MnP catalysts have demonstrated the ability to degrade these antibiotics to a high degree (up to 100% degradation). The structures of the degradation products were proposed based on mass spectrometry analysis, and density functional theory calculations could confirm how the substituent moieties attached to the basic chemical structure of the fluoroquinolones influence the degradation reactions. CIP has been shown to be a more reactive substrate towards the porphyrinic catalysts tested because of its three-membered ring. However, the catalysts could almost completely degrade LEV, highlighting the ability of these porphyrins to act as catalysts to degrade environmental pollutants.
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Affiliation(s)
- Ana Luísa Almeida Lage
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil
| | - Aline Capelão Marciano
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil
| | - Mateus Fernandes Venâncio
- Departamento de Físico-Química, Instituto de Química, Universidade Federal da Bahia, Campus Universitário de Ondina, 40170-110, Salvador, BA, Brazil
| | - Mirra Angelina Neres da Silva
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil
| | - Dayse Carvalho da Silva Martins
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil.
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17
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Strzempek W, Korzeniowska A, Kowalczyk A, Roth WJ, Gil B. Detemplated and Pillared 2-Dimensional Zeolite ZSM-55 with Ferrierite Layer Topology as a Carrier for Drugs. Molecules 2020; 25:molecules25153501. [PMID: 32752039 PMCID: PMC7435734 DOI: 10.3390/molecules25153501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 07/22/2020] [Accepted: 07/29/2020] [Indexed: 01/26/2023] Open
Abstract
The present studies were conducted to show the potential of 2D zeolites as effective and non-toxic carriers of drugs. Layered zeolites exhibit adjustable interlayer porosity which can be exploited for controlled drug delivery allowing detailed investigation of the drug release because the structure of the carrier is known exactly. This study was conducted with model drugs ciprofloxacin and piracetam, and ZSM-55 with ca 1 nm thick layers, in detemplated and pillared forms. The release profiles differed from the commercial, crystalline forms of drugs-the release rate increased for ciprofloxacin and decreased for piracetam. To understand the dissolution mechanisms the release data were fitted to Korsmeyer-Peppas equation, showing Fickian (for pillared) and anomalous (for detemplated sample) transport. FT-IR studies showed that strong interaction carrier-drug may be responsible for the modified, slowed down release of piracetam while better solubility and faster release of ciprofloxacin was attributed to formation of the protonated form resulting in weaker interaction with the zeolite than in the pure crystalline form. Two independent tests on L929 mice fibroblasts (ToxiLight and PrestoBlue) showed that ZSM-55, in moderate concentrations may be safely used as a carrier of drug molecules, not having negative effect on the cells viability or proliferation rate.
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18
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Saleem MU, Nasiri MI, Zaman SU, Khan N, Azeem M. Formulation development and characterization of cellulose/ polyacrylic acid – based polymers on the release of celecoxib from extended release tablets. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02201-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Said Suliman A, Tom R, Palmer K, Tolaymat I, Younes HM, Arafat B, Elhissi AMA, Najlah M. Development, characterization and stability evaluation of ciprofloxacin-loaded parenteral nutrition nanoemulsions. Pharm Dev Technol 2020; 25:579-587. [PMID: 31967908 DOI: 10.1080/10837450.2020.1720237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In this study, two licensed total parenteral nanoemulsion formulations (Clinoleic® and Intralipid®) were loaded with ciprofloxacin (CP). The physicochemical characteristics and stability profiles of the formulations were investigated using a range of drug concentrations. Furthermore, formulation stability was evaluated over a period of six months at room temperature (RT) or 4 °C. Loading CP into nanoemulsions resulted in no significant differences in their measured droplet size, polydispersity index (PI), zeta potential, and pH. Drug entrapment efficiency (EE) was relatively high for all formulations, regardless of nanoemulsion type, and the drug release was sustained over 24 h. Stability studies of all formulations were performed at 4 °C and RT for 180 and 60 days, respectively. At 4 °C for 180 days, both Clinoleic® and Intralipid® formulations at a range of drug concentrations (1-10 mg/ml) showed high stabilities measured periodically by the average droplet sizes, PI, pH, and zeta potential values. Similar results, but pH values, were shown when the formulations for both nanoemulsion stored at RT for 60 days. Overall, this study has shown that CP was successfully loaded into clinically licensed TPN lipid nanoemulsions. The resultant CP-loaded nanoemulsion formulations demonstrated desirable physicochemical properties and were stable upon storage at 4 °C for up to six months.
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Affiliation(s)
- Ammar Said Suliman
- Pharmaceutical Research Group, School of Allied Health, Faculty of Health, Education, Medicine, and Social Care, Anglia Ruskin University, Chelmsford, UK
| | - Rose Tom
- Pharmaceutical Research Group, School of Allied Health, Faculty of Health, Education, Medicine, and Social Care, Anglia Ruskin University, Chelmsford, UK
| | - Kirsty Palmer
- Pharmaceutical Research Group, School of Allied Health, Faculty of Health, Education, Medicine, and Social Care, Anglia Ruskin University, Chelmsford, UK
| | - Ibrahim Tolaymat
- Pharmaceutical Research Group, School of Allied Health, Faculty of Health, Education, Medicine, and Social Care, Anglia Ruskin University, Chelmsford, UK
| | - Husam M Younes
- Office of Vice President for Research & Graduate Studies, Qatar University, Doha, Qatar
| | - Basel Arafat
- Pharmaceutical Research Group, School of Allied Health, Faculty of Health, Education, Medicine, and Social Care, Anglia Ruskin University, Chelmsford, UK
| | - Abdelbary M A Elhissi
- Office of Vice President for Research & Graduate Studies, Qatar University, Doha, Qatar.,Pharmaceutical Sciences Section, College of Pharmacy, Qatar University, Doha, Qatar
| | - Mohammad Najlah
- Pharmaceutical Research Group, School of Allied Health, Faculty of Health, Education, Medicine, and Social Care, Anglia Ruskin University, Chelmsford, UK
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20
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Kao YT, Kaminski TS, Postek W, Guzowski J, Makuch K, Ruszczak A, von Stetten F, Zengerle R, Garstecki P. Gravity-driven microfluidic assay for digital enumeration of bacteria and for antibiotic susceptibility testing. LAB ON A CHIP 2020; 20:54-63. [PMID: 31774415 DOI: 10.1039/c9lc00684b] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The alarming dynamics of antibiotic-resistant infections calls for the development of rapid and point-of-care (POC) antibiotic susceptibility testing (AST) methods. Here, we demonstrated the first completely stand-alone microfluidic system that allowed the execution of digital enumeration of bacteria and digital antibiograms without any specialized microfluidic instrumentation. A four-chamber gravity-driven step emulsification device generated ∼2000 monodisperse 2 nanoliter droplets with a coefficient of variation of 8.9% of volumes for 95% of droplets within less than 10 minutes. The manual workload required for droplet generation was limited to the sample preparation, the deposition into the sample inlet of the chip and subsequent orientation of the chip vertically without an additional pumping system. The use of shallow chambers imposing a 2D droplet arrangement provided superior stability of the droplets against coalescence and minimized the leakage of the reporter viability dye between adjacent droplets during long-term culture. By using resazurin as an indicator of the growth of bacteria, we were also able to reduce the assay time to ∼5 hours compared to 20 hours using the standard culture-based test.
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Affiliation(s)
- Yu-Ting Kao
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. and Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - Tomasz S Kaminski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Witold Postek
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Jan Guzowski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Karol Makuch
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Artur Ruszczak
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Felix von Stetten
- Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany and Hahn-Schickard, Georges-Koehler-Allee 103, 79110, Freiburg, Germany
| | - Roland Zengerle
- Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany and Hahn-Schickard, Georges-Koehler-Allee 103, 79110, Freiburg, Germany
| | - Piotr Garstecki
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
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Cherif NF, Constantino VRL, Hamdaoui O, Leroux F, Taviot-Guého C. New insights into two ciprofloxacin-intercalated arrangements for layered double hydroxide carrier materials. NEW J CHEM 2020. [DOI: 10.1039/d0nj00045k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Highly ciprofloxacin loaded layered double hydroxide.
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Affiliation(s)
- Nawal Fodil Cherif
- Institut de Chimie de Clermont-Ferrand
- UMR-CNRS 6296
- Université Clermont Auvergne
- 63171 Aubière
- France
| | | | - Oualid Hamdaoui
- Chemical Engineering Department
- College of Engineering
- King Saud University
- Riyadh 11421
- Saudi Arabia
| | - Fabrice Leroux
- Institut de Chimie de Clermont-Ferrand
- UMR-CNRS 6296
- Université Clermont Auvergne
- 63171 Aubière
- France
| | - Christine Taviot-Guého
- Institut de Chimie de Clermont-Ferrand
- UMR-CNRS 6296
- Université Clermont Auvergne
- 63171 Aubière
- France
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Ren J, Chen D, Yu Y, Li H. Solubility of dicarbohydrazide bis[3-(5-nitroimino-1,2,4-triazole)] in common pure solvents and binary solvents at different temperatures. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190728. [PMID: 31827826 PMCID: PMC6894552 DOI: 10.1098/rsos.190728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 10/07/2019] [Indexed: 05/14/2023]
Abstract
The solubility of dicarbohydrazide bis[3-(5-nitroimino-1,2,4-triazole)] (DCBNT) was first measured under the different pure solvents and binary solvents by the dynamic method over the temperature range of 290-360 K at atmospheric pressure. Results in all the solvents were positively correlated with temperature, namely increased with increasing temperature. The experiment data were correlated by the Apelblat equation, the Yaws equation and the polynomial equation. The conclusion showed that these three models all agreed well with the experimental data. Simultaneously, the dissolution enthalpy, dissolution entropy and Gibbs free energy of DCBNT in different solvents were calculated from the solubility data by using the Apelblat model. The results indicate that the dissolution process of DCBNT in these solvents is driven by entropy, which provides theoretical guidance for further research on the crystallization of DCBNT.
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Affiliation(s)
- Jianrong Ren
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, Sichuan 621900, People's Republic of China
- College of Environment and Safety Engineering, North University of China, Taiyuan 030051, People's Republic of China
| | - Dong Chen
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, Sichuan 621900, People's Republic of China
| | - Yanwu Yu
- College of Environment and Safety Engineering, North University of China, Taiyuan 030051, People's Republic of China
| | - Hongzhen Li
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, Sichuan 621900, People's Republic of China
- Author for correspondence: Hongzhen Li e-mail:
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Zhang P, Li Y, Cao Y, Han L. Characteristics of tetracycline adsorption by cow manure biochar prepared at different pyrolysis temperatures. BIORESOURCE TECHNOLOGY 2019; 285:121348. [PMID: 31004949 DOI: 10.1016/j.biortech.2019.121348] [Citation(s) in RCA: 174] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/10/2019] [Accepted: 04/13/2019] [Indexed: 05/16/2023]
Abstract
This study aimed to explore the feasibility of using cow manure biochar (CMBC) for adsorption of tetracycline for realizing farm waste treatment and recycling. Three kinds of pyrolysis-temperature CMBCs were prepared and characterized. There were significant differences in the specific surface area, pores structure, surface charge, and oxygen-containing functional groups. The effect of adsorption was not only related to the physicochemical properties of CMBC but also the dosage, solution pH, and ambient temperature. CMBC showed surface heterogeneity, and the adsorption of tetracycline was mainly chemical. Controlling the rate of adsorption was achieved by combining internal particle diffusion and liquid film diffusion. Furthermore, the adsorption was a spontaneous and endothermic process. The use of CMBC as an adsorbent for tetracycline represents a new method for treating and recycling waste in farms. These results could aid in further studies on the adsorption mechanism and optimizing the adsorption process.
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Affiliation(s)
- Peizhen Zhang
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Yanfei Li
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Yaoyao Cao
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Lujia Han
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China.
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Jang HM, Kan E. A novel hay-derived biochar for removal of tetracyclines in water. BIORESOURCE TECHNOLOGY 2019; 274:162-172. [PMID: 30504099 DOI: 10.1016/j.biortech.2018.11.081] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/20/2018] [Accepted: 11/22/2018] [Indexed: 05/04/2023]
Abstract
The biochars derived from alfalfa (AF) and bermudagrass (BG), the abundant grass hays to cows, were prepared, characterized and used for removal of tetracycline (TC) in water. The alfalfa-derived biochar (AF-BC) has exhibited outstanding TC adsorption capacity (372 mg/g), which was about 8-fold higher than that of bermudagrass-derived biochar (BG-BC). In addition, the TC adsorption capacity of AF-BC was comparable with those of the commercial activated carbons under the same conditions. The surface structure, chemistry and high ash contents of AF-BC suggested the hydrogen bonding, electrostatic interactions and surface complexation between AF-BC and TC. Furthermore, hydroxyapatite (HAP; Ca5(PO4)3OH) and calcite (CaCO3) on the surface of AF-BC may also contribute to adsorption of TC via surface complexation, hydrogen bonding and electrostatic interactions. The alkaline desorption-driven regeneration of TC-spent AF-BC led to effective adsorption-desorption for multiple cycles, which indicated AF-BC could be a cost-effective adsorbent for TC in water and wastewater.
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Affiliation(s)
- Hyun Min Jang
- Department of Agricultural and Biological Engineering & Texas A&M AgriLife Research Center at Stephenville, Texas A&M University, USA
| | - Eunsung Kan
- Department of Agricultural and Biological Engineering & Texas A&M AgriLife Research Center at Stephenville, Texas A&M University, USA; Department of Wildlife, Sustainability, and Ecosystem Sciences, Tarleton State University, USA.
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25
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Jang HM, Yoo S, Choi YK, Park S, Kan E. Adsorption isotherm, kinetic modeling and mechanism of tetracycline on Pinus taeda-derived activated biochar. BIORESOURCE TECHNOLOGY 2018. [PMID: 29536870 DOI: 10.1016/j.biortech.2018.03.013] [Citation(s) in RCA: 232] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The objective of this study was to evaluate the adsorption of tetracycline (TC) on the Pinus taeda-derived activated biochar (BC). After NaOH activation, the well-developed porous surface structure was observed with a significantly increase in surface area (959.9 m2/g). The kinetic and isotherm studies indicated that hydrogen bonding and π-π interaction on the heterogeneous surface would be the possible mechanisms, while intra-particle diffusion was considered as the major limitation for the adsorption of TC on the activated BC. The maximum adsorption capacity of the activated BC (274.8 mg TC/g BC) was higher than those of various activated BCs from the previous studies while it was similar to those of commercial activated carbons. It indicated that the activated BC had the high potential for TC removal in water.
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Affiliation(s)
- Hyun Min Jang
- Texas A&M AgriLife Research Center, 1229 North US Highway 281, Stephenville, TX 76401, USA
| | - Seunghyun Yoo
- North Carolina State University, Department of Forest Biomaterials, 2820 Faucette Blvd, Raleigh, NC 27607, USA
| | - Yong-Keun Choi
- Texas A&M AgriLife Research Center, 1229 North US Highway 281, Stephenville, TX 76401, USA; Office of Sponsored Projects, Tarleton State University, 1333 W. Washington, Stephenville, TX 76401, USA
| | - Sunkyu Park
- North Carolina State University, Department of Forest Biomaterials, 2820 Faucette Blvd, Raleigh, NC 27607, USA
| | - Eunsung Kan
- Texas A&M AgriLife Research Center, 1229 North US Highway 281, Stephenville, TX 76401, USA; Office of Sponsored Projects, Tarleton State University, 1333 W. Washington, Stephenville, TX 76401, USA.
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26
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Choi SW, Kim J. Therapeutic Contact Lenses with Polymeric Vehicles for Ocular Drug Delivery: A Review. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1125. [PMID: 29966397 PMCID: PMC6073408 DOI: 10.3390/ma11071125] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 06/28/2018] [Accepted: 06/29/2018] [Indexed: 12/22/2022]
Abstract
The eye has many barriers with specific anatomies that make it difficult to deliver drugs to targeted ocular tissues, and topical administration using eye drops or ointments usually needs multiple instillations to maintain the drugs’ therapeutic concentration because of their low bioavailability. A drug-eluting contact lens is one of the more promising platforms for controllable ocular drug delivery, and, among various manufacturing methods for drug-eluting contact lenses, incorporation of novel polymeric vehicles with versatile features makes it possible to deliver the drugs in a sustained and extended manner. Using the diverse physicochemical properties of polymers for nanoparticles or implants that are selected according to the characteristics of drugs, enhancement of encapsulation efficiency and prolonged drug release are possible. Even though therapeutic contact lenses with polymeric vehicles allow us to achieve sustained ocular drug delivery, drug leaching during storage and distribution and the possibility of problems related to surface roughness due to the incorporated vehicles still need to be discussed before application in a real clinic. This review highlights the overall trends in methodology to develop therapeutic contact lenses with polymeric vehicles and discusses the limitations including comparison to cosmetically tinted soft contact lenses.
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Affiliation(s)
- Seung Woo Choi
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University (SKKU), Suwon 16419, Korea.
| | - Jaeyun Kim
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University (SKKU), Suwon 16419, Korea.
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea.
- Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University (SKKU), Suwon 16419, Korea.
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Pignatello R, Leonardi A, Fuochi V, Petronio Petronio G, Greco AS, Furneri PM. A Method for Efficient Loading of Ciprofloxacin Hydrochloride in Cationic Solid Lipid Nanoparticles: Formulation and Microbiological Evaluation. NANOMATERIALS 2018; 8:nano8050304. [PMID: 29734771 PMCID: PMC5977318 DOI: 10.3390/nano8050304] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/09/2018] [Accepted: 05/02/2018] [Indexed: 11/16/2022]
Abstract
The aim of the study was the production of solid lipid nanoparticles (SLN) loaded with ciprofloxacin (CIP) through two different production techniques, quasi-emulsion solvent diffusion (QESD) and solvent injection (SI). In order to efficaciously entrap the commercial salt form (hydrochloride) of the antibiotic in these lipid systems, a conversion of CIP hydrochloride to the free base was realized in situ, through the addition of triethylamine. To ensure physical stability to the carriers over time and ameliorate the interaction with bacterial cell membranes, positively charged SLN were produced by addition of the cationic lipid didecyldimethylammonium bromide (DDAB). Homogeneous SLN populations with a mean particle sizes of 250–350 nm were produced by both methods; drug encapsulation was over 85% for most samples. The SLN were physically stable for up to nine months both at 4 °C and 25 °C, although the former condition appears more suitable to guarantee the maintenance of the initial particle size distribution. As expected, CIP encapsulation efficiency underwent a slight reduction after nine months of storage, although the initial high drug content values would ensure a residual concentration of the antibiotic in the SLN still appropriate to exert an acceptable antibacterial activity. Selected SLN formulations were subjected to an in vitro microbiological assay against different bacterial strains, to verify the effect of nanoencapsulation on the cell growth inhibitory activity of CIP. In general, CIP-SLN produced without DDAB showed MIC values for CIP comparable to those of the free drug. Conversely, addition of increasing percentages of the cationic lipid, reflected by a progressive increase of the positive value of the Zeta potential, showed a variety of MIC values against the various bacterial strains, but with values 2–4 order of dilution lower than free CIP. An hypothesis of the effect of the cationic lipid upon the increased antibacterial activity of CIP in the nanocarriers is also formulated.
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Affiliation(s)
- Rosario Pignatello
- Section of Pharmaceutical Technology, Department of Drug Sciences, University of Catania, 95125 Catania, Italy.
- NANO-i, Research Centre on Ocular Nanotechnology, University of Catania, 95125 Catania, Italy.
| | - Antonio Leonardi
- Section of Pharmaceutical Technology, Department of Drug Sciences, University of Catania, 95125 Catania, Italy.
| | - Virginia Fuochi
- Section of Microbiology, Department of Biomedical and Biotechnological Sciences, BIOMETEC, University of Catania, 95125 Catania, Italy.
| | - Giulio Petronio Petronio
- Section of Microbiology, Department of Biomedical and Biotechnological Sciences, BIOMETEC, University of Catania, 95125 Catania, Italy.
| | - Antonio S Greco
- Section of Pharmaceutical Technology, Department of Drug Sciences, University of Catania, 95125 Catania, Italy.
| | - Pio Maria Furneri
- Section of Microbiology, Department of Biomedical and Biotechnological Sciences, BIOMETEC, University of Catania, 95125 Catania, Italy.
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Ho DK, Costa A, De Rossi C, de Souza Carvalho-Wodarz C, Loretz B, Lehr CM. Polysaccharide Submicrocarrier for Improved Pulmonary Delivery of Poorly Soluble Anti-infective Ciprofloxacin: Preparation, Characterization, and Influence of Size on Cellular Uptake. Mol Pharm 2018; 15:1081-1096. [PMID: 29425049 DOI: 10.1021/acs.molpharmaceut.7b00967] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The majority of the currently used and developed anti-infectives are poorly water-soluble molecules. The poor solubility might lead to limited bioavailability and pharmacological action of the drug. Novel pharmaceutical materials have thus been designed to solve those problems and improve drug delivery. In this study, we propose a facile method to produce submicrocarriers (sMCs) by electrostatic gelation of anionic ß-cyclodextrin (aß-CD) and chitosan. The average hydrodynamic size ranged from 400 to 900 nm by carefully adjusting polymer concentrations and N/C ratio. The distinct host-guest reaction of cyclodextrin derivative is considered as a good approach to enhance solubility, and prevent drug recrystallization, and thus was used to develop sMC to improve the controlled release profile of a poorly soluble and clinically relevant anti-infective ciprofloxacin. The optimal molar ratio of ciprofloxacin to aß-CD was found to be 1:1, which helped maximize encapsulation efficiency (∼90%) and loading capacity (∼9%) of ciprofloxacin loaded sMCs. Furthermore, to recommend the future application of the developed sMCs, the dependence of cell uptake on sMCs size (500, 700, and 900 nm) was investigated in vitro on dTHP-1 by both flow cytometry and confocal microscopy. The results demonstrate that, regardless of their size, an only comparatively small fraction of the sMCs were taken up by the macrophage-like cells, while most of the carriers were merely adsorbed to the cell surface after 2 h incubation. After continuing the incubation to reach 24 h, the majority of the sMCs were found intracellularly. However, the sMCs had been designed to release sufficient amount of drug within 24 h, and the subsequent phagocytosis of the carrier may be considered as an efficient pathway for its safe degradation and elimination. In summary, the developed sMC is a suitable system with promising perspectives recommended for pulmonary extracellular infection therapeutics.
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Affiliation(s)
- Duy-Khiet Ho
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Saarland University , D-66123 Saarbrücken , Germany.,Department of Pharmacy , Saarland University , D-66123 Saarbrücken , Germany
| | - Ana Costa
- I3S, Instituto de Investigação e Inovação em Saúde Universidade do Porto , 4200-135 Porto , Portugal.,Instituto Nacional de Engenharia Biomédica (INEB), Universidade do Porto , 4200-135 Porto , Portugal.,Instituto Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto , 4050-313 Porto , Portugal
| | - Chiara De Rossi
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Saarland University , D-66123 Saarbrücken , Germany
| | - Cristiane de Souza Carvalho-Wodarz
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Saarland University , D-66123 Saarbrücken , Germany
| | - Brigitta Loretz
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Saarland University , D-66123 Saarbrücken , Germany
| | - Claus-Michael Lehr
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Saarland University , D-66123 Saarbrücken , Germany.,Department of Pharmacy , Saarland University , D-66123 Saarbrücken , Germany
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Surov AO, Voronin AP, Drozd KV, Churakov AV, Roussel P, Perlovich GL. Diversity of crystal structures and physicochemical properties of ciprofloxacin and norfloxacin salts with fumaric acid. CrystEngComm 2018. [DOI: 10.1039/c7ce02033c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The crystallization of norfloxacin and ciprofloxacin – antibacterial fluoroquinolone compounds – with fumaric acid resulted in the isolation of six distinct solid forms of the drugs with different stoichiometries and hydration levels.
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Affiliation(s)
- Artem O. Surov
- Institution of the Russian Academy of Sciences
- G.A. Krestov Institute of Solution Chemistry RAS
- Ivanovo
- Russia
| | - Alexander P. Voronin
- Institution of the Russian Academy of Sciences
- G.A. Krestov Institute of Solution Chemistry RAS
- Ivanovo
- Russia
| | - Ksenia V. Drozd
- Institution of the Russian Academy of Sciences
- G.A. Krestov Institute of Solution Chemistry RAS
- Ivanovo
- Russia
| | | | - Pascal Roussel
- UCCS UMR 8181 University des Sciences et Technologies de Lille-1
- Lille
- France
| | - German L. Perlovich
- Institution of the Russian Academy of Sciences
- G.A. Krestov Institute of Solution Chemistry RAS
- Ivanovo
- Russia
- Department of Chemistry
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30
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Lim LM, Tran TT, Cheow WS, Hadinoto K. Re-evaluating the presumed superiority of amorphous nanoparticles over amorphous microscale solid dispersion in solubility enhancement of poorly soluble drugs. Eur J Pharm Sci 2017; 109:455-463. [DOI: 10.1016/j.ejps.2017.09.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 09/01/2017] [Accepted: 09/02/2017] [Indexed: 12/25/2022]
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31
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Yu H, Hadinoto K. Impacts of dextran sulfate’s chain length on the characteristics of its self-assembled colloidal complex formed with amphiphilic small-molecule drug. Int J Biol Macromol 2017; 103:493-500. [DOI: 10.1016/j.ijbiomac.2017.05.095] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 05/04/2017] [Accepted: 05/16/2017] [Indexed: 10/19/2022]
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32
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Ali I, Suhail M, Asnin L. Chiral separation of quinolones by liquid chromatography and capillary electrophoresis. J Sep Sci 2017; 40:2863-2882. [PMID: 28510993 DOI: 10.1002/jssc.201700200] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 05/02/2017] [Accepted: 05/02/2017] [Indexed: 12/29/2022]
Abstract
The quinolones are derivatives of oxoquinolines and mostly known for their antibacterial and antiviral activities. Many quinolones are chiral compounds having asymmetric centers and important due to their enantioselective biological activities. In order to study the biological activities of quinolone enantiomers, to control the manufacturing of homochiral drugs and to prepare necessary quantities of pure enantiomers for preclinical or clinical trials, respective chiral separation methods are urgently needed. In this context, the present review discusses chromatographic and electrophoretic methods for the enantioseparation of chiral quinolones and provides some useful information on their physical and pharmaceutical properties. The drawbacks of currently used techniques are revealed and ways to overcome them are outlined. Moreover, recommendations for an optimal choice of a separation protocol are given.
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Affiliation(s)
- Imran Ali
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi, India
| | - Mohd Suhail
- Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi, India
| | - Leonid Asnin
- Perm National Research Polytechnic University, Perm, Russia
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33
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Solubility and bioavailability enhancement of ciprofloxacin by induced oval-shaped mono-6-deoxy-6-aminoethylamino-β-cyclodextrin. Carbohydr Polym 2017; 163:118-128. [DOI: 10.1016/j.carbpol.2017.01.073] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 12/23/2016] [Accepted: 01/19/2017] [Indexed: 11/22/2022]
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34
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The effect of the solvent employed in the synthesis of hydrogels of poly (acrylamide-co-methyl methacrylate) on their structure, properties and possible biomedical applications. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Lee B, Jeong D, Joo SW, Choi JM, Lee JY, Cho E, Park S, Jung S. Preparation of Hydroxypropyl Cyclosophoraose/Dextran Microspheres for the Controlled Release of Ciprofloxacin. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.11001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Benel Lee
- Department of Systems Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Center for Biotechnology Research in UBITA (CBRU); Konkuk University; Seoul 05029 South Korea
| | - Daham Jeong
- Department of Systems Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Center for Biotechnology Research in UBITA (CBRU); Konkuk University; Seoul 05029 South Korea
| | - Sang-Woo Joo
- Department of Systems Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Center for Biotechnology Research in UBITA (CBRU); Konkuk University; Seoul 05029 South Korea
| | - Jae Min Choi
- Department of Systems Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Center for Biotechnology Research in UBITA (CBRU); Konkuk University; Seoul 05029 South Korea
| | - Jae Yung Lee
- Department of Biological Science; Mokpo National University; Jeonnam 59626 Korea
| | - Eunae Cho
- Institute for Ubiquitous Information Technology and Applications (UBITA), Center for Biotechnology Research in UBITA (CBRU); Konkuk University; Seoul 05029 Korea
| | - Seyeon Park
- Department of Applied Chemistry; Dongduk Women's University; Seoul 02748 South Korea
| | - Seunho Jung
- Department of Systems Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Center for Biotechnology Research in UBITA (CBRU); Konkuk University; Seoul 05029 South Korea
- Institute for Ubiquitous Information Technology and Applications (UBITA), Center for Biotechnology Research in UBITA (CBRU); Konkuk University; Seoul 05029 Korea
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36
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Ciprofloxacin: pH-dependent SERS signal and its detection in spiked river water using LoC-SERS. Anal Bioanal Chem 2016; 408:8393-8401. [DOI: 10.1007/s00216-016-9957-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 08/26/2016] [Accepted: 09/19/2016] [Indexed: 01/18/2023]
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37
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Scaffaro R, Botta L, Maio A, Mistretta MC, La Mantia FP. Effect of Graphene Nanoplatelets on the Physical and Antimicrobial Properties of Biopolymer-Based Nanocomposites. MATERIALS 2016; 9:ma9050351. [PMID: 28773475 PMCID: PMC5503009 DOI: 10.3390/ma9050351] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 04/29/2016] [Accepted: 05/02/2016] [Indexed: 12/15/2022]
Abstract
In this work, biopolymer-based nanocomposites with antimicrobial properties were prepared via melt-compounding. In particular, graphene nanoplatelets (GnPs) as fillers and an antibiotic, i.e., ciprofloxacin (CFX), as biocide were incorporated in a commercial biodegradable polymer blend of poly(lactic acid) (PLA) and a copolyester (BioFlex®). The prepared materials were characterized by scanning electron microscopy (SEM), and rheological and mechanical measurements. Moreover, the effect of GnPs on the antimicrobial properties and release kinetics of CFX was evaluated. The results indicated that the incorporation of GnPs increased the stiffness of the biopolymeric matrix and allowed for the tuning of the release of CFX without hindering the antimicrobial activity of the obtained materials.
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Affiliation(s)
- Roberto Scaffaro
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università di Palermo, UdR INSTM di Palermo, Viale delle Scienze, Palermo 90128, Italy.
| | - Luigi Botta
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università di Palermo, UdR INSTM di Palermo, Viale delle Scienze, Palermo 90128, Italy.
| | - Andrea Maio
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università di Palermo, UdR INSTM di Palermo, Viale delle Scienze, Palermo 90128, Italy.
| | - Maria Chiara Mistretta
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università di Palermo, UdR INSTM di Palermo, Viale delle Scienze, Palermo 90128, Italy.
| | - Francesco Paolo La Mantia
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università di Palermo, UdR INSTM di Palermo, Viale delle Scienze, Palermo 90128, Italy.
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38
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Baskakova A, Awwad S, Jiménez JQ, Gill H, Novikov O, Khaw PT, Brocchini S, Zhilyakova E, Williams GR. Electrospun formulations of acyclovir, ciprofloxacin and cyanocobalamin for ocular drug delivery. Int J Pharm 2016; 502:208-18. [DOI: 10.1016/j.ijpharm.2016.02.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 02/10/2016] [Accepted: 02/11/2016] [Indexed: 12/20/2022]
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Solliec M, Roy-Lachapelle A, Sauvé S. Development of a suspect and non-target screening approach to detect veterinary antibiotic residues in a complex biological matrix using liquid chromatography/high-resolution mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:2361-2373. [PMID: 26563707 DOI: 10.1002/rcm.7405] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 09/11/2015] [Accepted: 09/22/2015] [Indexed: 06/05/2023]
Abstract
RATIONALE Swine manure can contain a wide range of veterinary antibiotics, which could enter the environment via manure spreading on agricultural fields. A suspect and non-target screening method was applied to swine manure samples to attempt to identify veterinary antibiotics and pharmaceutical compounds for a future targeted analysis method. METHODS A combination of suspect and non-target screening method was developed to identify various veterinary antibiotic families using liquid chromatography coupled with high-resolution mass spectrometry (LC/HRMS). The sample preparation was based on the physicochemical parameters of antibiotics for the wide scope extraction of polar compounds prior to LC/HRMS analysis. The amount of data produced was processed by applying restrictive thresholds and filters to significantly reduce the number of compounds found and eliminate matrix components. RESULTS The suspect and non-target screening was applied on swine manure samples and revealed the presence of seven common veterinary antibiotics and some of their relative metabolites, including tetracyclines, β-lactams, sulfonamides and lincosamides. However, one steroid and one analgesic were also identified. The occurrence of the identified compounds was validated by comparing their retention times, isotopic abundance patterns and fragmentation patterns with certified standards. CONCLUSIONS This identification method could be very useful as an initial step to screen for and identify emerging contaminants such as veterinary antibiotics and pharmaceuticals in environmental and biological matrices prior to quantification.
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Affiliation(s)
- Morgan Solliec
- Department of Chemistry, Université de Montréal, Montréal, QC, Canada
| | | | - Sébastien Sauvé
- Department of Chemistry, Université de Montréal, Montréal, QC, Canada
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40
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Tewes F, Brillault J, Lamy B, O'Connell P, Olivier JC, Couet W, Healy AM. Ciprofloxacin-Loaded Inorganic-Organic Composite Microparticles To Treat Bacterial Lung Infection. Mol Pharm 2015; 13:100-12. [PMID: 26641021 DOI: 10.1021/acs.molpharmaceut.5b00543] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Ciprofloxacin (CIP) is an antibiotic that has been clinically trialed for the treatment of lung infections by aerosolization. However, CIP is rapidly systemically absorbed after lung administration, increasing the risk for subtherapeutic pulmonary concentrations and resistant bacteria selection. In the presence of calcium, CIP forms complexes that reduce its oral absorption. Such complexation may slow down CIP absorption from the lung thereby maintaining high concentration in this tissue. Thus, we developed inhalable calcium-based inorganic-organic composite microparticles to sustain CIP within the lung. The aerodynamics and micromeritic properties of the microparticles were characterized. FTIR and XRD analysis suggest that the inorganic component of the particles comprised amorphous calcium carbonate and amorphous calcium formate, and that CIP and calcium interact in a 1:1 stoichiometry in the particles. CIP was completely released from the microparticles within 7 h, with profiles showing a slight dependence on pH (5 and 7.4) compared to the dissolution of pure CIP. Transport studies of CIP across Calu-3 cell monolayers, in the presence of various calcium concentrations, showed a decrease of up to 84% in CIP apparent permeability. The apparent minimum inhibitory concentration of CIP against Pseudomonas aeruginosa and Staphylococcus aureus was not changed in the presence of the same calcium concentration. These results indicate that the designed particles should provide sustained levels of CIP with therapeutic effect in the lung. With these microparticles, it should be possible to control CIP pharmacokinetics within the lung, based on controlled CIP release from the particles and reduced apparent permeability across the epithelial barrier due to the cation-CIP interaction.
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Affiliation(s)
- Frederic Tewes
- INSERM U 1070, Pôle Biologie-Santé, Faculté de Médecine & Pharmacie, Université de Poitiers , CHU de Poitiers, 86022 Poitiers Cedex, France.,School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, University of Dublin , Dublin 2, Ireland
| | - Julien Brillault
- INSERM U 1070, Pôle Biologie-Santé, Faculté de Médecine & Pharmacie, Université de Poitiers , CHU de Poitiers, 86022 Poitiers Cedex, France
| | - Barbara Lamy
- INSERM U 1070, Pôle Biologie-Santé, Faculté de Médecine & Pharmacie, Université de Poitiers , CHU de Poitiers, 86022 Poitiers Cedex, France
| | - Peter O'Connell
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, University of Dublin , Dublin 2, Ireland
| | - Jean-Christophe Olivier
- INSERM U 1070, Pôle Biologie-Santé, Faculté de Médecine & Pharmacie, Université de Poitiers , CHU de Poitiers, 86022 Poitiers Cedex, France
| | - William Couet
- INSERM U 1070, Pôle Biologie-Santé, Faculté de Médecine & Pharmacie, Université de Poitiers , CHU de Poitiers, 86022 Poitiers Cedex, France
| | - Anne Marie Healy
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, University of Dublin , Dublin 2, Ireland
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Khan DD, Lagerbäck P, Cao S, Lustig U, Nielsen EI, Cars O, Hughes D, Andersson DI, Friberg LE. A mechanism-based pharmacokinetic/pharmacodynamic model allows prediction of antibiotic killing from MIC values for WT and mutants. J Antimicrob Chemother 2015; 70:3051-60. [DOI: 10.1093/jac/dkv233] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Accepted: 07/07/2015] [Indexed: 11/13/2022] Open
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Surov AO, Manin AN, Voronin AP, Drozd KV, Simagina AA, Churakov AV, Perlovich GL. Pharmaceutical salts of ciprofloxacin with dicarboxylic acids. Eur J Pharm Sci 2015; 77:112-21. [DOI: 10.1016/j.ejps.2015.06.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 05/20/2015] [Accepted: 06/08/2015] [Indexed: 12/11/2022]
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Cheow WS, Kiew TY, Hadinoto K. Combining inkjet printing and amorphous nanonization to prepare personalized dosage forms of poorly-soluble drugs. Eur J Pharm Biopharm 2015; 96:314-21. [PMID: 26325060 DOI: 10.1016/j.ejpb.2015.08.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 08/22/2015] [Accepted: 08/25/2015] [Indexed: 10/23/2022]
Abstract
Inkjet printing of drug nanosuspension on edible porous substrates was carried out for the first time with the objective of preparing personalized dosage forms of poorly soluble drugs. Amorphous drug-polysaccharide nanoparticle complex (or drug nanoplex in short) was used as the nanosuspension ink, instead of the conventional crystalline nanodrug. The amorphous drug nanoplex exhibited low propensity to Ostwald ripening growth, high colloidal stability, and supersaturation generation capability making it ideal for printing. Nanoplexes of ciprofloxacin - a BCS Class IV compound - prepared by complexation with dextran sulfate were used as the nanosuspension ink at two different sizes (i.e. ≈265nm and 188nm). Inkjet printing was performed on cellulose substrate at 0.25% (w/v) nanosuspension concentration and 5% (w/v) polyethylene glycol. For both nanoplex sizes, the results indicated that the printed dose could be increased by increasing the number of droplets dispensed. However, exact correlations between the achievable dose and the number of droplets dispensed were not evident, which was likely caused by the spatial non-homogeneity in the nanosuspension concentration. Compared to the larger nanoplex, printed nanodrugs of the smaller nanoplex consistently exhibited higher payload with better batch-to-batch reproducibility (<6%). The maximum achievable payload was equal to ≈2.5μg/cm(2), which was multifold higher than that achieved had inkjet printing of ciprofloxacin solution been performed. Nevertheless, print substrate with higher liquid uptake capacity is needed to increase the payload nearer to the therapeutic dose. Lastly, the drug release and non-cytotoxicity of the printed nanodrug were successfully established in vitro.
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Affiliation(s)
| | - Tie Yi Kiew
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459
| | - Kunn Hadinoto
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459.
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44
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Baelo A, Levato R, Julián E, Crespo A, Astola J, Gavaldà J, Engel E, Mateos-Timoneda MA, Torrents E. Disassembling bacterial extracellular matrix with DNase-coated nanoparticles to enhance antibiotic delivery in biofilm infections. J Control Release 2015; 209:150-8. [DOI: 10.1016/j.jconrel.2015.04.028] [Citation(s) in RCA: 146] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 04/20/2015] [Accepted: 04/21/2015] [Indexed: 12/11/2022]
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45
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Sabrah AH, Yassen GH, Spolnik KJ, Hara AT, Platt JA, Gregory RL. Evaluation of Residual Antibacterial Effect of Human Radicular Dentin Treated with Triple and Double Antibiotic Pastes. J Endod 2015; 41:1081-4. [DOI: 10.1016/j.joen.2015.03.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 02/12/2015] [Accepted: 03/02/2015] [Indexed: 02/04/2023]
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46
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Feio MJ, Sousa I, Ferreira M, Cunha-Silva L, Saraiva RG, Queirós C, Alexandre JG, Claro V, Mendes A, Ortiz R, Lopes S, Amaral AL, Lino J, Fernandes P, Silva AJ, Moutinho L, de Castro B, Pereira E, Perelló L, Gameiro P. Fluoroquinolone–metal complexes: A route to counteract bacterial resistance? J Inorg Biochem 2014; 138:129-143. [DOI: 10.1016/j.jinorgbio.2014.05.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 05/16/2014] [Accepted: 05/20/2014] [Indexed: 10/25/2022]
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47
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Young PM, Crapper J, Philips G, Sharma K, Chan HK, Traini D. Overcoming Dose Limitations Using the Orbital® Multi-Breath Dry Powder Inhaler. J Aerosol Med Pulm Drug Deliv 2014; 27:138-47. [DOI: 10.1089/jamp.2013.1080] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Paul M. Young
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, The University of Sydney, NSW 2037, Australia
| | - John Crapper
- Pharmaxis Ltd., Frenchs Forest, Sydney, NSW 2086, Australia
| | - Gary Philips
- Pharmaxis Ltd., Frenchs Forest, Sydney, NSW 2086, Australia
| | - Ketan Sharma
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, The University of Sydney, NSW 2037, Australia
| | - Hak-Kim Chan
- Advanced Drug Delivery Group, Faculty of Pharmacy (A15), University of Sydney, Sydney, NSW 2006, Australia
| | - Daniela Traini
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, The University of Sydney, NSW 2037, Australia
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48
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Ong HX, Traini D, Salama R, Anderson SD, Daviskas E, Young PM. The Effects of Mannitol on the Transport of Ciprofloxacin across Respiratory Epithelia. Mol Pharm 2013; 10:2915-24. [DOI: 10.1021/mp400030n] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hui Xin Ong
- Respiratory
Technology, Woolcock
Institute of Medical Research and Discipline of Pharmacology, Sydney
Medical School, The University of Sydney, NSW 2037, Australia
| | - Daniela Traini
- Respiratory
Technology, Woolcock
Institute of Medical Research and Discipline of Pharmacology, Sydney
Medical School, The University of Sydney, NSW 2037, Australia
| | - Rania Salama
- Respiratory
Technology, Woolcock
Institute of Medical Research and Discipline of Pharmacology, Sydney
Medical School, The University of Sydney, NSW 2037, Australia
| | - Sandra D. Anderson
- Department of Respiratory and
Sleep Medicine, Royal Prince Alfred Hospital, Camperdown, New South
Wales, Australia
| | - Evangelia Daviskas
- Department of Respiratory and
Sleep Medicine, Royal Prince Alfred Hospital, Camperdown, New South
Wales, Australia
| | - Paul M. Young
- Respiratory
Technology, Woolcock
Institute of Medical Research and Discipline of Pharmacology, Sydney
Medical School, The University of Sydney, NSW 2037, Australia
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49
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Pereira JF, Vicente F, Santos-Ebinuma VC, Araújo JM, Pessoa A, Freire MG, Coutinho JA. Extraction of tetracycline from fermentation broth using aqueous two-phase systems composed of polyethylene glycol and cholinium-based salts. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.02.025] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Alves F, Oliveira FS, Schröder B, Matos C, Marrucho IM. Synthesis, characterization, and liposome partition of a novel tetracycline derivative using the ionic liquids framework. J Pharm Sci 2013; 102:1504-12. [PMID: 23450634 DOI: 10.1002/jps.23487] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 01/10/2013] [Accepted: 02/01/2013] [Indexed: 11/10/2022]
Abstract
Recently, efforts have been put on the development of new drug formulations using ionic liquid framework. In this work, two different species of abroad-spectrum polyketide antibiotic, tetracycline, are studied in terms of some important properties for antibiotics such as solubility in water and hydrophilic-hydrophobic balance. Tetracycline was used as cation, whereas docusate, a biocompatible anion, which enables the tailoring of the hydrophilicity of salts, was chosen as the anion. The developed innovative ion pair, tetracycline docusate, was characterized in terms of its thermal stability, water solubility, octanol-water, and liposome-water partition coefficients, using UV-vis spectrophotometry because of the absorbance of tetracycline around 270 nm. Egg yolk phosphatidylcholine liposomes were used as cell membrane models, and the interactions of both tetracycline hydrochloride and tetracycline docusate with the liposomes were quantified by determination of the partition coefficient using derivative spectrophotometry. A theoretical model based on simple partition drugs between two different media was used to determine the partition coefficient in liposomes.
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Affiliation(s)
- Filipa Alves
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
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