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Santos AM, Júnior JA, Cézar SV, Araújo AA, Júnior LJ, Aragón DM, Serafini MR. Cyclodextrin inclusion complexes improving antibacterial drug profiles: an update systematic review. Future Microbiol 2023; 18:1363-1379. [PMID: 37910070 DOI: 10.2217/fmb-2023-0124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 08/29/2023] [Indexed: 11/03/2023] Open
Abstract
Aim: The study aimed to review experimental models using cyclodextrins to improve antibacterial drugs' physicochemical characteristics and biological activities. Methods: The following terms and their combinations were used: cyclodextrins and antibacterial agents in title or abstract, and the total study search was conducted over a period up to October 2022. The review was carried out using PubMed, Scopus and Embase databases. A total of 1580 studies were identified, of which 27 articles were selected for discussion in this review. Results: The biological results revealed that the antibacterial effect of the inclusion complexes was extensively improved. Cyclodextrins can enhance the therapeutic effects of antibiotics already existing on the market, natural products and synthetic molecules. Conclusion: Overall, CDs as drug-delivery vehicles have been shown to improve antibiotics solubility, stability, and bioavailability, leading to enhanced antibacterial activity.
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Affiliation(s)
- Anamaria M Santos
- Postgraduate Program in Health Sciences, Federal University of Sergipe, Aracaju, 49060-100, Sergipe, Brazil
| | - José Acn Júnior
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Sergipe,São Cristóvão, 49060-100, Sergipe, Brazil
| | - Silvia Vs Cézar
- Department of Pharmacy,Federal University of Sergipe, São Cristóvão, 49060-100, Sergipe, Brazil
| | - Adriano As Araújo
- Postgraduate Program in Health Sciences, Federal University of Sergipe, Aracaju, 49060-100, Sergipe, Brazil
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Sergipe,São Cristóvão, 49060-100, Sergipe, Brazil
- Department of Pharmacy,Federal University of Sergipe, São Cristóvão, 49060-100, Sergipe, Brazil
| | - Lucindo Jq Júnior
- Postgraduate Program in Health Sciences, Federal University of Sergipe, Aracaju, 49060-100, Sergipe, Brazil
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Sergipe,São Cristóvão, 49060-100, Sergipe, Brazil
| | - Diana M Aragón
- Departamento de Farmacia, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá D.C., Colombia
| | - Mairim R Serafini
- Postgraduate Program in Health Sciences, Federal University of Sergipe, Aracaju, 49060-100, Sergipe, Brazil
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Sergipe,São Cristóvão, 49060-100, Sergipe, Brazil
- Department of Pharmacy,Federal University of Sergipe, São Cristóvão, 49060-100, Sergipe, Brazil
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Bhattacharyya P, Parmar PR, Basak S, Dubey KK, Sutradhar S, Bandyopadhyay D, Chakrabarti S. Metal organic framework-derived recyclable magnetic coral Co@Co 3O 4/C for adsorptive removal of antibiotics from wastewater. Environ Sci Pollut Res Int 2023; 30:50520-50536. [PMID: 36795201 PMCID: PMC9932418 DOI: 10.1007/s11356-023-25846-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 02/06/2023] [Indexed: 04/16/2023]
Abstract
The menace posed by antibiotic contamination to humanity has increased due to the absence of efficient antibiotic removal processes in the conventional waste water treatment methods from the hospitals, households, animal husbandry, and pharma industry. Importantly, only a few commercially available adsorbents are magnetic, porous, and have the ability to selectively bind and separate various classes of antibiotics from the slurries. Herein, we report the synthesis of a coral-like Co@Co3O4/C nanohybrid for the remediation of three different classes of antibiotics - quinolone, tetracycline, and sulphonamide. The coral like Co@Co3O4/C materials are synthesized via a facile room temperature wet chemical method followed by annealing in a controlled atmosphere. The materials demonstrate an attractive porous structure with an excellent surface-to-mass ratio of 554.8 m2 g-1 alongside superior magnetic responses. A time-varying adsorption study of aqueous nalidixic acid solution on Co@Co3O4/C nanohybrids indicates that these coral-like Co@Co3O4/C nanohybrids could achieve a high removal efficiency of 99.98% at pH 6 in 120 min. The adsorption kinetics data of Co@Co3O4/C nanohybrids follow a pseudo-second-order reaction kinetics suggesting a chemisorption effect. The adsorbent has also shown its merit in reusability for four adsorption-desorption cycles without showing significant change in the removal efficiency. More in-depth studies validate that the excellent adsorption capability of Co@Co3O4/C adsorbent attributing to the electrostatic and π-π interaction between adsorbent and various antibiotics. Concisely, the adsorbent manifests the potential for the removal of a wide range of antibiotics from the water alongside showing their utility in the hassle-free magnetic separation.
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Affiliation(s)
- Puja Bhattacharyya
- Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida, 201303, India
| | - Prathu Raja Parmar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Sanchari Basak
- Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida, 201303, India
| | - Kashyap Kumar Dubey
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, 110067, India
| | | | - Dipankar Bandyopadhyay
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
- School of Health Sciences and Technology, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Sandip Chakrabarti
- Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida, 201303, India.
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Esim O, Kiymaci ME, Hascicek C. Ciprofloxacin HCl-loaded Albumin Nanoparticles for the Treatment of Recurrent Urinary Tract Infections: Preparation, Optimization, and Evaluation of Antibacterial Activity. J Pharm Innov 2023. [DOI: 10.1007/s12247-023-09709-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Ibrahim UH, Devnarain N, Mohammed M, Omolo CA, Gafar MA, Salih M, Pant A, Shunmugam L, Mocktar C, Khan R, Oh JK, Govender T. Dual acting acid-cleavable self-assembling prodrug from hyaluronic acid and ciprofloxacin: A potential system for simultaneously targeting bacterial infections and cancer. Int J Biol Macromol 2022; 222:546-561. [PMID: 36150574 DOI: 10.1016/j.ijbiomac.2022.09.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/14/2022] [Accepted: 09/19/2022] [Indexed: 11/05/2022]
Abstract
The incidence and of bacterial infections, and resulting mortality, among cancer patients is growing dramatically, worldwide. Several therapeutics have been reported to have dual anticancer and antibacterial activity. However, there is still an urgent need to develop new drug delivery strategies to improve their clinical efficacy. Therefore, this study aimed to develop a novel acid cleavable prodrug (HA-Cip) from ciprofloxacin and hyaluronic acid to simultaneously enhance the anticancer and antibacterial properties of Cip as a superior drug delivery system. HA-Cip was synthesised and characterised (FT-IR, HR-MS, and H1 NMR). HA-Cip generated stable micelles with an average particle size, poly dispersion index (PDI) and zeta potential (ZP) of 237.89 ± 25.74 nm, 0.265 ± 0.013, and -17.82 ± 1.53 mV, respectively. HA-Cip showed ≥80 % cell viability against human embryonic kidney 293 cells (non-cancerous cells), ˂0.3 % haemolysis; and a faster pH-responsive ciprofloxacin release at pH 6.0. HA-Cip showed a 5.4-fold improvement in ciprofloxacin in vitro anticancer activity against hepatocellular cancer (HepG2) cells; and enhanced in vitro antibacterial activity against Escherichia coli and Klebsiella pneumoniae at pH 6.0. Our findings show HA-Cip as a promising prodrug for targeted delivery of ciprofloxacin to efficiently treat bacterial infections associated, and/or co-existing, with cancer.
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Affiliation(s)
- Usri H Ibrahim
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Nikita Devnarain
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Mahir Mohammed
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Calvin A Omolo
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa; United States International University-Africa, School of Pharmacy and Health Sciences, Department of Pharmaceutics, P. O. Box 14634-00800, Nairobi, Kenya.
| | - Mohammed A Gafar
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Mohammed Salih
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Amit Pant
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Letitia Shunmugam
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban, South Africa
| | - Chunderika Mocktar
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Rene Khan
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban, South Africa
| | - Jung Kwon Oh
- Department of Chemistry and Biochemistry, School of Arts and Sciences, Concordia University, 7141 Sherbrooke St. W., Montreal, QC, Canada
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa.
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Kavanagh ON. Alkalising agents in urinary tract infections: theoretical contraindications, interactions and synergy. Ther Adv Drug Saf 2022; 13:20420986221080794. [PMID: 35321040 PMCID: PMC8935415 DOI: 10.1177/20420986221080794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 01/26/2022] [Indexed: 12/04/2022] Open
Abstract
Introduction: Alkalising agents have the potential to enhance the efficacy of many antimicrobial agents used in the treatment of Urinary Tract Infections; they also have the potential to cause significant patient harm if used incorrectly. This work seeks to illustrate and quantify these risks and synergies by modelling drug solubility and supersaturation against pharmacokinetic data for commonly used antibiotic agents. Methods: Solubility-pH relationships are employed to quantify the crystalluria risk for compounds which may be reasonably expected to be co-prescribed—or co-administered—with urinary alkalisers (amoxicillin, nitrofurantoin, trimethoprim, sulfamethoxazole and ciprofloxacin). These results are correlated against reports of crystalluria in the literature and in the EU Adverse Drug Reaction database. Results and Discussion: We find a correlation between the maximum theoretical supersaturation attainable and crystalluria reports for sulfamethoxazole, amoxicillin and ciprofloxacin. Shifts in urine pH which can be induced by alkalising agents may produce supersaturated states (and thus induce crystalluria) and may also affect antimicrobial efficacy. The importance of employing biorelevant media to improve predictive capacity of this analysis is also discussed. Conclusion: Despite their widespread use, alkalising agents have significant effects on the pharmacokinetics of the most common drugs used to treat UTIs. With self-care set to increase, all OTC products should be critically re-evaluated to ensure patient safety, particularly within contexts where healthcare professionals are not involved in treatment selection. This analysis suggests a need for consistency across patient and healthcare professional documents to improve clarity. Plain Language Summary OTC Alkalising agents need additional warning information
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Emami S, Lerno LA, Taha AY. Antibiotic standards stored as a mixture in water: methanol are unstable at various temperatures irrespective of pH and glass container silanization. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2021; 39:61-73. [PMID: 34854803 DOI: 10.1080/19440049.2021.1982150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
It is well-established that antibiotics stored individually at their optimal pH and in appropriate solvents are stable over time. However, limited information exists on the stability of antibiotics from multiple classes when prepared and stored as a mixture prior to multiresidue analysis by mass spectrometry. This study tested the stability of antibiotic standard mixtures from eight classes [amphenicols, tetracyclines, sulfonamides, quinolones, macrolides, β-lactams, lincosamides and miscellaneous (i.e., trimethoprim)] in relation to the water:methanol ratio, presence of sodium hydroxide base (to solubilise quinolones), storage temperature, and container type including plain and silanized glass vials. Antibiotics were analysed by ultra-high-performance liquid chromatography coupled to tandem mass spectrometry. Several antibiotics, mainly quinolones, tetracyclines and macrolides, were unstable when stored as mixtures for one week regardless of the water:methanol ratio, storage temperature (4, -20 or -80 °C) and presence/absence of sodium hydroxide. Silanization of glassware improved the storage stability of quinolones and macrolides but reduced the stability of tetracyclines and other antibiotics including florfenicol amine, penicillin G, erythromycin and sulfadiazine. Our results show that several antibiotics in water:methanol are unstable when stored as a mixture and suggest a limited advantage of using base or silanized glass vials for the preparation and storage of antibiotic standards mixed together. Freshly prepared antibiotic standard mixtures are recommended for multi-residue quantitation of antibiotics.Abbreviations AMOX: amoxicillin; AMP: ampicillin; AZ: azithromycin; CAP: chloramphenicol; CE: collision energy; CTC: chlortetracycline; CIP: ciprofloxacin; DOX: doxycycline; ENO: enoxacin; ENRO: enrofloxacin; ERYTH: erythromycin; FF: florfenicol; FFA: florfenicol amine; FLU: flumequine; HDPE: high-density polyethylene; LC-MS/MS: liquid chromatography-tandem mass spectrometry; LIN: lincomycin; MRM: multiple reaction monitoring; NOR: norfloxacin; OFL-D3: ofloxacin-D3; OXO: oxolinic acid; OTC: oxytetracycline; PEN-G: penicillin G; PEN-V: penicillin V; ROX: roxithromycin; SDM: sulfadimethoxine; SDZ: sulfadiazine; SMX: sulfamethoxazole; SMZ-D4: sulfamethazine-D4; SSZ: sulfasalazine; TC: tetracycline; TAP: thiamphenicol; TILM: tilmicosin; TRIM: trimethoprim; TL: tolerance limit; VIRG: virginiamycin; UPLC-MS/MS: ultra-high pressure liquid chromatography-tandem mass spectrometry.
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Affiliation(s)
- Shiva Emami
- Department of Food Science and Technology, College of Agriculture and Environmental Sciences, University of California, Davis, CA, USA
| | - Larry A Lerno
- Food Safety and Measurement Facility, University of California, Davis, CA, USA
| | - Ameer Y Taha
- Department of Food Science and Technology, College of Agriculture and Environmental Sciences, University of California, Davis, CA, USA
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Adesanya T, Zvomuya F, Farenhorst A. Phytoextraction of ciprofloxacin and sulfamethoxaxole by cattail and switchgrass. Chemosphere 2021; 279:130534. [PMID: 33892459 DOI: 10.1016/j.chemosphere.2021.130534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/26/2021] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
Cattail (Typha latifolia L.) and switchgrass (Panicum virgatum L.) can effectively remove inorganic contaminants from soils and biosolids, but their role in the attenuation of organic contaminants, such as antimicrobials, is currently poorly understood. Uptake by plants is one of several mechanisms by which plant-assisted attenuation of antimicrobials can be achieved. The objectives of this growth room study were to evaluate the plant uptake of ciprofloxacin (CIP) and sulfamethoxazole (SMX) and examine their partitioning between plant roots and aboveground biomass (AGB). Plant uptake of the two 14C labeled antimicrobials was studied at two environmentally relevant concentrations (5 and 10 μg L-1). Plants were destructively sampled every 3-4 d during the 21-d growth period. Accumulation of CIP and SMX in both plant species was greater in the roots than in the AGB. The percentage uptake values of the two antimicrobials were significantly greater for cattail (34% for CIP, 20% for SMX) than for switchgrass (10% for both CIP and SMX). Translocation factors of the two antimicrobials were <1 for both plants, indicating slow movement of the antimicrobials from the roots to the shoots. For cattail roots, the BCF for CIP (1.58 L g-1) was significantly greater than that for SMX (0.8 L g-1). By comparison, BCFs for switchgrass roots did not differ significantly between CIP (0.88 L g-1) and SMX (1.13 L g-1). These results indicate greater potential for cattail to phytoextract CIP and SMX and significantly contribute to the attenuation of these antimicrobials in systems designed for the phytoremediation of contaminated wastewater.
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Affiliation(s)
- Theresa Adesanya
- Department of Soil Science, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Francis Zvomuya
- Department of Soil Science, University of Manitoba, Winnipeg, Manitoba, Canada.
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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] [What about the content of this article? (0)] [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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Capellades G, Neurohr C, Briggs N, Rapp K, Hammersmith G, Brancazio D, Derksen B, Myerson AS. On-Demand Continuous Manufacturing of Ciprofloxacin in Portable Plug-and-Play Factories: Implementation and In Situ Control of Downstream Production. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00117] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gerard Capellades
- Department of Chemical Engineering, Massachusetts Institute of Technology, E19-502D, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - Clemence Neurohr
- Department of Chemical Engineering, Massachusetts Institute of Technology, E19-502D, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - Naomi Briggs
- Department of Chemical Engineering, Massachusetts Institute of Technology, E19-502D, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - Kersten Rapp
- Department of Chemical Engineering, Massachusetts Institute of Technology, E19-502D, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - Gregory Hammersmith
- Department of Chemical Engineering, Massachusetts Institute of Technology, E19-502D, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - David Brancazio
- Department of Chemical Engineering, Massachusetts Institute of Technology, E19-502D, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - Bridget Derksen
- Department of Chemical Engineering, Massachusetts Institute of Technology, E19-502D, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
| | - Allan S. Myerson
- Department of Chemical Engineering, Massachusetts Institute of Technology, E19-502D, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
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Zhu S, Wang P, Yang XB, Jin C, Qiu R. Coupling experiments with calculations to understand the thermodynamics evolution for the sorption of zwitterionic ciprofloxacin on oxidizing-aged pyrogenic chars in the aquatic system. J Hazard Mater 2021; 411:125101. [PMID: 33482506 DOI: 10.1016/j.jhazmat.2021.125101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/22/2020] [Accepted: 01/07/2021] [Indexed: 06/12/2023]
Abstract
Oxidized aging due to the long-term exposure can significantly alter the sorption of pyrogenic chars (i.e., biochar, BC) towards antibiotics, which determined their fates in natural environments. In this study, the sorption of ciprofloxacin (CIP) on the oxidizing-aged BCs was studied linking the experimental thermodynamics and theoretical calculations. Results revealed that Q0 of CIP negatively correlated with their average site energies (Em), while pore-normalized Q0 on aged BCs were 2-6 folds higher than fresh BCs. From competitive sorption, it is proposed that the transformation of CIP± to CIP+ occurred and the π+-π electron donor-acceptor interaction and Coulombic attraction onto the aged BCs played a critical role. These two specific interactions with CIP were thermodynamically improved when aging degree increased and favored the free energies (ΔaG) of sorption by 2-5 kJ mol-1. Based on the identified relationship between experimental ΔOA-ΔG0 with Ea through DFT calculations, the contributions of the specific interactions to antibiotic sorption on aged BCs were quantified. This study provided an in-depth understanding of how the aging process affects the sorption of zwitterionic antibiotics on BCs and also possibilities to predict the fate of antibiotics in the presence of BCs over a long-term period.
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Affiliation(s)
- Shishu Zhu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Pan Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Xiao-Bao Yang
- Department of Physics, South China University of Technology, Guangzhou 510640, PR China
| | - Chao Jin
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Rongliang Qiu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China.
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Abdel-Rahman IM, Mustafa M, Mohamed SA, Yahia R, Abdel-Aziz M, Abuo-Rahma GEDA, Hayallah AM. Novel Mannich bases of ciprofloxacin with improved physicochemical properties, antibacterial, anticancer activities and caspase-3 mediated apoptosis. Bioorg Chem 2021; 107:104629. [PMID: 33482607 DOI: 10.1016/j.bioorg.2021.104629] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/12/2020] [Accepted: 01/03/2021] [Indexed: 12/26/2022]
Abstract
The design, synthesis and identification of a novel series of Mannich bases of ciprofloxacin was reported. Naphthol derivatives 2a and 2b showed highly potent cytotoxic activity among the tested compounds. Compound 2a showed broad spectrum antiproliferative activity with GI50 of 2.5-6.79 µM with remarkable selectivity towards renal and prostate cancers with selectivity ratios ranging from 0.17 to 6.79. Independently, 2a showed outstanding activity against colon cancer HOP-92 cell lines with IC50 of 6.66 µM while 2b showed highly potent activity against ovarian cancer cell lines with IC50 of 0.97 µM. Results showed that 2b induced cell cycle arrest at G2/M phase and apoptosis; compound 2b showed over-expression of caspase-3 protein level (449.2 ± 7.95) compared to doxorubicin (578.7 ± 14.4 pg/mL). Meanwhile, compounds 2a and 2b experienced outstanding activity against both Gram-positive and Gram-negative microorganisms. Interestingly, compound 2j experienced high activity against Escherichia coli and Pseudomonas aeruginosa with MIC of 0.036 and 0.043, respectively. Compound 2d revealed 27 folds and 22 folds, respectively increasing of activity over ciprofloxacin against Staphylococcus aureus and MRSA(reference strain). Compound 2d showed high activity against Staphylococcus aureus, MRSA (reference strain) and MRSA (clinical strain) with MIC of 0.57, 0.52, 0.082 µg/mL, respectively. Interestingly, the most active tested compounds were found to have promising physicochemical and drug likeness properties. The Mannich bases 2j, 2d and 2g showed promising antibacterial activities, while naphthols 2a and 2b showed promising antiproliferative and antibacterial activities that require further optimization.
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Affiliation(s)
- Islam M Abdel-Rahman
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, New-Minia, 61519 Minia, Egypt
| | - Muhamad Mustafa
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, New-Minia, 61519 Minia, Egypt
| | - Soad A Mohamed
- Department of Pharmaceutics, Faculty of Pharmacy, Deraya University, New-Minia, 61519 Minia, Egypt
| | - Ramadan Yahia
- Department of Microbiology, Faculty of Pharmacy, Deraya University, New-Minia, 61519 Minia, Egypt
| | - Mohamed Abdel-Aziz
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, 61519 Minia, Egypt
| | - Gamal El-Din A Abuo-Rahma
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, New-Minia, 61519 Minia, Egypt; Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, 61519 Minia, Egypt.
| | - Alaa M Hayallah
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, New-Minia, 61519 Minia, Egypt; Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Sphinx University, New-Assiut, Egypt.
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Santos MM, Alves C, Silva J, Florindo C, Costa A, Petrovski Ž, Marrucho IM, Pedrosa R, Branco LC. Antimicrobial Activities of Highly Bioavailable Organic Salts and Ionic Liquids from Fluoroquinolones. Pharmaceutics 2020; 12:pharmaceutics12080694. [PMID: 32717808 PMCID: PMC7464485 DOI: 10.3390/pharmaceutics12080694] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/28/2020] [Accepted: 07/13/2020] [Indexed: 12/16/2022] Open
Abstract
As the development of novel antibiotics has been at a halt for several decades, chemically enhancing existing drugs is a very promising approach to drug development. Herein, we report the preparation of twelve organic salts and ionic liquids (OSILs) from ciprofloxacin and norfloxacin as anions with enhanced antimicrobial activity. Each one of the fluoroquinolones (FQs) was combined with six different organic hydroxide cations in 93-100% yield through a buffer-assisted neutralization methodology. Six of those were isomorphous salts while the remaining six were ionic liquids, with four of them being room temperature ionic liquids. The prepared compounds were not toxic to healthy cell lines and displayed between 47- and 1416-fold more solubility in water at 25 and 37 °C than the original drugs, with the exception of the ones containing the cetylpyridinium cation. In general, the antimicrobial activity against Klebsiella pneumoniae was particularly enhanced for the ciprofloxacin-based OSILs, with up to ca. 20-fold decreases of the inhibitory concentrations in relation to the parent drug, while activity against Staphylococcus aureus and the commensal Bacillus subtilis strain was often reduced. Depending on the cation-drug combination, broad-spectrum or strain-specific antibiotic salts were achieved, potentially leading to the future development of highly bioavailable and safe antimicrobial ionic formulations.
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Affiliation(s)
- Miguel M. Santos
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (A.C.); (Ž.P.)
- Correspondence: (M.M.S.); (R.P.); (L.C.B.)
| | - Celso Alves
- MARE–Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, 2520-641 Peniche, Portugal; (C.A.); (J.S.)
| | - Joana Silva
- MARE–Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, 2520-641 Peniche, Portugal; (C.A.); (J.S.)
| | - Catarina Florindo
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal; (C.F.); (I.M.M.)
| | - Alexandra Costa
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (A.C.); (Ž.P.)
| | - Željko Petrovski
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (A.C.); (Ž.P.)
| | - Isabel M. Marrucho
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal; (C.F.); (I.M.M.)
| | - Rui Pedrosa
- MARE–Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, 2520-641 Peniche, Portugal; (C.A.); (J.S.)
- Correspondence: (M.M.S.); (R.P.); (L.C.B.)
| | - Luís C. Branco
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (A.C.); (Ž.P.)
- Correspondence: (M.M.S.); (R.P.); (L.C.B.)
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Brillault J, Tewes F. Control of the Lung Residence Time of Highly Permeable Molecules after Nebulization: Example of the Fluoroquinolones. Pharmaceutics 2020; 12:pharmaceutics12040387. [PMID: 32340298 PMCID: PMC7238242 DOI: 10.3390/pharmaceutics12040387] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/05/2020] [Accepted: 04/07/2020] [Indexed: 12/29/2022] Open
Abstract
Pulmonary drug delivery is a promising strategy to treat lung infectious disease as it allows for a high local drug concentration and low systemic side effects. This is particularly true for low-permeability drugs, such as tobramycin or colistin, that penetrate the lung at a low rate after systemic administration and greatly benefit from lung administration in terms of the local drug concentration. However, for relatively high-permeable drugs, such as fluoroquinolones (FQs), the rate of absorption is so high that the pulmonary administration has no therapeutic advantage compared to systemic or oral administration. Formulation strategies have thus been developed to decrease the absorption rate and increase FQs’ residence time in the lung after inhalation. In the present review, some of these strategies, which generally consist of either decreasing the lung epithelium permeability or decreasing the release rate of FQs into the epithelial lining fluid after lung deposition, are presented in regards to their clinical aspects.
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Affiliation(s)
- Julien Brillault
- INSERM U-1070, Pôle Biologie Santé, 86000 Poitiers, France
- UFR Médecine-Pharmacie, Université de Poitiers, 86073 Poitiers, France
- Correspondence: (J.B.); (F.T.)
| | - Frédéric Tewes
- INSERM U-1070, Pôle Biologie Santé, 86000 Poitiers, France
- UFR Médecine-Pharmacie, Université de Poitiers, 86073 Poitiers, France
- Correspondence: (J.B.); (F.T.)
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Faccendini A, Ruggeri M, Miele D, Rossi S, Bonferoni MC, Aguzzi C, Grisoli P, Viseras C, Vigani B, Sandri G, Ferrari F. Norfloxacin-Loaded Electrospun Scaffolds: Montmorillonite Nanocomposite vs. Free Drug. Pharmaceutics 2020; 12:pharmaceutics12040325. [PMID: 32260441 PMCID: PMC7238150 DOI: 10.3390/pharmaceutics12040325] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 12/11/2022] Open
Abstract
Infections in nonhealing wounds remain one of the major challenges. Recently, nanomedicine approach seems a valid option to overcome the antibiotic resistance mechanisms. The aim of this study was the development of three types of polysaccharide-based scaffolds (chitosan-based (CH), chitosan/chondroitin sulfate-based (CH/CS), chitosan/hyaluronic acid-based (CH/HA)), as dermal substitutes, to be loaded with norfloxacin, intended for the treatment of infected wounds. The scaffolds have been loaded with norfloxacin as a free drug (N scaffolds) or in montmorillonite nanocomposite (H—hybrid-scaffolds). Chitosan/glycosaminoglycan (chondroitin sulfate or hyaluronic acid) scaffolds were prepared by means of electrospinning with a simple, one-step process. The scaffolds were characterized by 500 nm diameter fibers with homogeneous structures when norfloxacin was loaded as a free drug. On the contrary, the presence of nanocomposite caused a certain degree of surface roughness, with fibers having 1000 nm diameters. The presence of norfloxacin–montmorillonite nanocomposite (1%) caused higher deformability (90–120%) and lower elasticity (5–10 mN/cm2), decreasing the mechanical resistance of the systems. All the scaffolds were proven to be degraded via lysozyme (this should ensure scaffold resorption) and this sustained the drug release (from 50% to 100% in 3 days, depending on system composition), especially when the drug was loaded in the scaffolds as a nanocomposite. Moreover, the scaffolds were able to decrease the bioburden at least 100-fold, proving that drug loading in the scaffolds did not impair the antimicrobial activity of norfloxacin. Chondroitin sulfate and montmorillonite in the scaffolds are proven to possess a synergic performance, enhancing the fibroblast proliferation without impairing norfloxacin’s antimicrobial properties. The scaffold based on chondroitin sulfate, containing 1% norfloxacin in the nanocomposite, demonstrated adequate stiffness to sustain fibroblast proliferation and the capability to sustain antimicrobial properties to prevent/treat nonhealing wound infection during the healing process.
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Affiliation(s)
- Angela Faccendini
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (A.F.); (M.R.); (D.M.); (S.R.); (M.C.B.); (P.G.); (B.V.); (F.F.)
| | - Marco Ruggeri
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (A.F.); (M.R.); (D.M.); (S.R.); (M.C.B.); (P.G.); (B.V.); (F.F.)
| | - Dalila Miele
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (A.F.); (M.R.); (D.M.); (S.R.); (M.C.B.); (P.G.); (B.V.); (F.F.)
| | - Silvia Rossi
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (A.F.); (M.R.); (D.M.); (S.R.); (M.C.B.); (P.G.); (B.V.); (F.F.)
| | - Maria Cristina Bonferoni
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (A.F.); (M.R.); (D.M.); (S.R.); (M.C.B.); (P.G.); (B.V.); (F.F.)
| | - Carola Aguzzi
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, Campus of Cartuja, 18071 Granada, Spain; (C.A.); (C.V.)
| | - Pietro Grisoli
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (A.F.); (M.R.); (D.M.); (S.R.); (M.C.B.); (P.G.); (B.V.); (F.F.)
| | - Cesar Viseras
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, Campus of Cartuja, 18071 Granada, Spain; (C.A.); (C.V.)
| | - Barbara Vigani
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (A.F.); (M.R.); (D.M.); (S.R.); (M.C.B.); (P.G.); (B.V.); (F.F.)
| | - Giuseppina Sandri
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (A.F.); (M.R.); (D.M.); (S.R.); (M.C.B.); (P.G.); (B.V.); (F.F.)
- Correspondence: ; Tel.: +0039-0382-987728
| | - Franca Ferrari
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (A.F.); (M.R.); (D.M.); (S.R.); (M.C.B.); (P.G.); (B.V.); (F.F.)
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Bizi M, El Bachra F. Evaluation of the ciprofloxacin adsorption capacity of common industrial minerals and application to tap water treatment. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2019.11.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Dionísio R, Daniel D, Alkimin GDD, Nunes B. Multi-parametric analysis of ciprofloxacin toxicity at ecologically relevant levels: Short- and long-term effects on Daphnia magna. Environ Toxicol Pharmacol 2020; 74:103295. [PMID: 31786495 DOI: 10.1016/j.etap.2019.103295] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 10/09/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
The increased presence of emergent compounds, such as pharmaceuticals drugs, in the aquatic compartment has been acknowledged as an evolving environmental issue whose consequences are not yet fully characterized. Specific classes of pharmaceutical drugs, such as fluoroquinolone antibiotics, can exert toxic effects to non-target species with ecological significance, since these compounds are environmentally stable and persistent, and may interact with some of the key physiologic processes of organisms. Despite such characteristics, knowledge about the effects of these drugs is still scarce, especially to non-target organisms. The present study aimed to evaluate the effects of chronic and acute exposures of the cladoceran Daphnia magna to the fluoroquinolone antibiotic ciprofloxacin. Putative toxic effects were assessed, following acute and chronic exposures to ecologically relevant concentrations of ciprofloxacin, through enzymatic (cholinesterase - ChEs, catalase - CAT, glutathione S-transferases - GSTs) and non-enzymatic (thiobarbituric acid reactive substances - TBARS, glycogen - Gly) biomarkers. In addition, we also determined behavioural (swimming distance - SD) and morphological (body length of the first brood - BL1B) endpoints in animals exposed to this drug. Ciprofloxacin acute exposure resulted in increased CAT and ChEs activities, and inhibited GSTs activity. After chronic exposure, ChEs activity was significantly inhibited, while GSTs activity was significantly enhanced. TBARS levels were only increased at higher concentrations of ciprofloxacin. CAT activity and Gly content did not evidence a clear and significant pattern of variation. SD was slightly inhibited during dark cycles. BL1B presented a significant decrease for animals subjected to an intermediate concentration. Results showed that even ecologically relevant concentrations of ciprofloxacin may cause oxidative stress in individuals of D. magna. The present study showed important data that corroborate the occurrence of significant biochemical alterations in key features of an aquatic organism when exposed to relevant levels of a widely used antibiotic, establishing essential links between environmental exposure to this specific drug and putative toxic challenges that may result in irreversible changes and damages, especially at the individual level. However, changes in the size of neonates suggest that population alterations are likely to occur under real scenarios of chronic contamination by this drug.
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Affiliation(s)
- Ricardo Dionísio
- Departamento de Biologia, Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - David Daniel
- Departamento de Biologia, Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Gilberto Dias de Alkimin
- Departamento de Biologia, Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Bruno Nunes
- Departamento de Biologia, Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Abioye A, Sanyaolu A, Dudzinska P, Adepoju-Bello AA, Coker HAB. Chitosan-induced Synergy for Extended Antimicrobial Potency and Enhanced In Vitro Drug Release of Free Base Ciprofloxacin Nanoplexes. Pharm Nanotechnol 2019; 8:33-53. [PMID: 31642799 DOI: 10.2174/2211738507666191021102256] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 10/01/2019] [Accepted: 10/07/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Ciprofloxacin free base is practically insoluble in aqueous medium (0.0011 and 0.09 mg/mL at 25 and 37°C respectively). Its inorganic salt form (ciprofloxacin hydrochloride) is more soluble in water (1.35 mg/mL) however when administered orally, it exhibits decreased solubility in the stomach due to common ion effects. Ciprofloxacin free base was used in this study because of its greater hydrophobicity than its hydrochloride salt, which is required for effective permeability and potent antibacterial activity. OBJECTIVE The purpose of this study is to enhance oral solubility and bacterial cell permeability of the free base ciprofloxacin (CPX) using a single step CPX-chitosan (CT) selfassembly to form nanoplexes with organic counterions. It was envisioned that this would allow the delivery of larger amounts of active drug into the microorganisms. METHODS Ciprofloxacin-chitosan nanocomplex (nanoplex) was prepared using low energy electrostatic self-assembly technique previously described. Formation of eutectic nanoplex was confirmed using FTIR, DSC, TGA and SEM. The saturated solubility, in vitro release kinetics and mechanism of drug release were determined using mathematical models. Potency and synergism were determined from the inhibition zones, minimum inhibitory concentration (MIC) and Fractional Inhibitory Concentration (FIC) of the nanoplexes using Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. RESULTS Formation of CPX-CT eutectic adduct polymeric nanoplexes was confirmed with FT-IR and DSC and SEM revealed the conversion of rod-like crystals of CPX (117 μm long) into spherical nanostructures (23-503 nm) dictated by pH, ionic strength and concentration of CT. The solubility of free base CPX increased to a maximum of 32.77 mg/mL compared to 0.0011-0.09 mg/mL reported in literature and dissolution efficiency increased to a maximum of 100% within 72 h. The synergistic effect of CT on antimicrobial activity of CPX was quantified, for the first time, using Fractional Inhibitory Concentration (FIC) of the nanoplexes. FIC was less than 0.5 in both Gram positive (0.031-0.250) and Gram negative (0.036-0.281) microorganisms used in this study, confirming synergistic enhancement of antimicrobial efficacy of CPX. CONCLUSION It is evident that the design of drug-polymer nanocomplex formulation provides a platform for the synergistic enhancement of therapeutic potency of antibiotics.
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Affiliation(s)
- Amos Abioye
- Lloyd L. Gregory School of Pharmacy, Palm Beach Atlantic University, West Palm Beach, Florida, FL, United States
| | | | - Paulina Dudzinska
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, LE1 9BH, United Kingdom
| | | | - Herbert A B Coker
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Lagos, Lagos, Nigeria
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Pirsaheb M, Moradi S, Shahlaei M, Wang X, Farhadian N. Simultaneously implement of both weak magnetic field and aeration for ciprofloxacin removal by Fenton-like reaction. J Environ Manage 2019; 246:776-784. [PMID: 31228691 DOI: 10.1016/j.jenvman.2019.06.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 05/14/2019] [Accepted: 06/10/2019] [Indexed: 06/09/2023]
Abstract
This study evaluates the ability of heterogeneous Fenton-like reaction (nano zero-valent iron (NZVI)/H2O2) in combination with weak magnetic field (WMF) under continuous oxygen supply by air bubbling for pollutant abatement (using ciprofloxacin as a model pollutant). The considered operating variables were initial pH, catalyst dosage, reaction time and different intensities of magnetic field. Results indicated that NZVI/H2O2/aeration/weak magnetic field could effectively decompose ciprofloxacin at neutral condition and higher removal rates are observed at higher pH and NZVI concentrations. Superimposing a weak magnetic field leads to 20% enhancement in ciprofloxacin removal by catalytic Fenton under aeration condition. Employing simultaneously magnetic field induction and aeration exhibit excellent capability to the NZVI oxidation and significantly increased the dissolution rate of iron. Based on Fourier transform infrared spectroscopy, transformation products of NZVI are Fe3O4 and FeO(OH). The faster mass transport due to Lorentz and field gradient force, more oxygen diffusion to the iron surface and promoted electrochemical reactions results in more OH° production. Generation of weak magnetic field by permanent magnets and using aeration for both mixing and in situ oxygen supply significantly enhanced the Fenton reaction performance. This combination technology doesn't need any energy input and costly chemicals hence can be used easily for wastewater treatment applications.
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Affiliation(s)
- Meghdad Pirsaheb
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sajad Moradi
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohsen Shahlaei
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Xiangke Wang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, PR China
| | - Negin Farhadian
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Mu Y, Huang C, Li H, Chen L, Zhang D, Yang Z. Electrochemical degradation of ciprofloxacin with a Sb-doped SnO2 electrode: performance, influencing factors and degradation pathways. RSC Adv 2019; 9:29796-29804. [PMID: 35531541 PMCID: PMC9071943 DOI: 10.1039/c9ra04860j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 09/04/2019] [Indexed: 11/21/2022] Open
Abstract
Sb-doped SnO2 electrodes were prepared with the practical sol–gel method and were used for the electrocatalytic degradation of ciprofloxacin (CIP) in aqueous solution. Results from the electrochemical characterization (including cyclic voltammetry, linear sweep voltammetry, and electrochemical impedance spectroscopy) showed that the electrode with 16 coating times (SSO-16) had the highest oxygen evolution potential of 2.2 V (vs. SCE) and the highest electrochemically active area of 3.74 cm2. The results of scanning electron microscopy and X-ray diffraction showed that the coating times could affect the surface morphology and crystal structure of the electrodes, and the SSO-16 electrode had a denser surface, higher crystallinity, and smaller grain size (28.6 nm). Moreover, the experimental parameters for CIP degradation with SSO-16 were optimized, and the removal ratio of CIP reached to almost 100% within 60 min. In addition, the possible degradation pathways of CIP were proposed. And the stability and reusability of the SSO-16 electrode were also studied. These results are valuable for the preparation of high electrocatalytic performance electrodes by a sol–gel coating method for electrochemical degradation of antibiotics. Sb-doped SnO2 electrodes with different coating times were prepared by an optimum sol–gel method and the application on the electrocatalytic degradation of ciprofloxacin in aqueous solution were investigated.![]()
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Affiliation(s)
- Yanguang Mu
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| | - Cong Huang
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| | - Haipu Li
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| | - Leilei Chen
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| | - Ding Zhang
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| | - Zhaoguang Yang
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
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Abstract
Liposomes have been widely researched as drug delivery systems; however, the solid state form of drug inside the liposome, whether it is in solution or in a solid state, is often not studied. The solid state properties of the drug inside the liposomes are important, as they dictate the drug release behavior when the liposomes come into contact with physiological fluid. Recently, a new approach of making liposomal ciprofloxacin nanocrystals was proposed by the use of an additional freeze-thawing step in the liposomal preparation method. This paper aims to determine the solid state properties of ciprofloxacin inside the liposomes after this additional freeze-thawing cycle using cryo-TEM, small-angle X-ray scattering (SAXS), and cross-polarized light microscopy (CPLM). Ciprofloxacin precipitated in the ciprofloxacin hydrate crystal form with a unit cell dimension of 16.7 Å. The nanocrystals also showed a phase transition at 93 °C, which represents dehydration of the hydrate crystals to the anhydrate form of ciprofloxacin, verified by temperature-dependent SAXS measurements. Furthermore, the dependence of the solid state form of the nanocrystals on pH was investigated in situ, and it was shown that the liposomal ciprofloxacin nanocrystals retained their crystalline form at pH 6-10. Understanding the solid state attributes of nanocrystals inside liposomes provides improved understanding of drug dissolution and release as well as opening avenues to new applications where the nanosized crystals can provide a dissolution benefit.
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Affiliation(s)
| | - Stephen Mudie
- SAXS/WAXS Beamline , Australian Synchrotron , Clayton , Victoria 3168 , Australia
| | - David Cipolla
- Insmed Inc. , 10 Finderne Avenue , Building 10, Bridgewater , New Jersey 08807-3365 , United States
| | - Thomas Rades
- Department of Pharmacy , University of Copenhagen , Copenhagen 2100 , Denmark
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Cuprys A, Pulicharla R, Lecka J, Brar SK, Drogui P, Surampalli RY. Ciprofloxacin-metal complexes -stability and toxicity tests in the presence of humic substances. Chemosphere 2018; 202:549-559. [PMID: 29587236 DOI: 10.1016/j.chemosphere.2018.03.117] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/15/2018] [Accepted: 03/17/2018] [Indexed: 06/08/2023]
Abstract
The co-contamination of ciprofloxacin (CIP) with metal ions results in alteration of CIP mobility, antimicrobial activity and distribution/development of the antibiotic-resistance genes. In this study, the stability of five CIP-Me complexes [Me = Al(III), Co(II), Cu(II), Fe(III), Mg] was investigated in the presence of humic substances (HS) at two temperatures 18 ± 2 °C and 4 ± 1 °C for seven days period. The most stable complexes were CIP-Al, CIP-Cu, and CIP-Co with the stability constants (K) at 18 °C 35.5 ± 1.4 11.5 ± 1.5 and 11.7 ± 1.5 respectively. At lower temperature (4 °C), the stability constants decreased: 1-fold for CIP-Al, 14-fold for CIP-Co and 2-fold for CIP-Cu. The presence of humic substances decreased the stability of complexes. The chemical reactions of Fe3+ in water at circumneutral pH resulted in stability alteration. The formation of CIP-Mg complexes at lower temperatures and in the presence of HS was limited. In ultrapure water, CIP-Me complexes exhibit higher toxicity towards Gram-negative Enterobacter aeruginosa (ranged between 0.125 and 0.5 μg/ml). However, the presence of HS reduced the antimicrobial activity of CIP-Me complexes by at least 2-fold. Gram-positive representative, Bacillus subtilis was not affected by the presence of metal ions and/or HS. The toxicity toward B. subtilis for the complexes was equal to toxicity of CIP alone (MIC = 0.25 μg/ml). This suggested the different susceptibility to CIP and its complexes.
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Affiliation(s)
- Agnieszka Cuprys
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada
| | - Rama Pulicharla
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada
| | - Joanna Lecka
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada
| | - Satinder Kaur Brar
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada.
| | - Patrick Drogui
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada
| | - R Y Surampalli
- Global Institute for Energy, Environment and Sustainability, P.O. Box 14354, Lenexa, KS 66285, USA
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Amin M, Abbas NS, Hussain MA, Sher M, Edgar KJ. Design of cellulose ether-based macromolecular prodrugs of ciprofloxacin for extended release and enhanced bioavailability. Int J Biol Macromol 2018; 113:719-28. [DOI: 10.1016/j.ijbiomac.2018.02.142] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/13/2018] [Accepted: 02/22/2018] [Indexed: 11/18/2022]
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Garnero C, Chattah AK, Aloisio C, Fabietti L, Longhi M. Improving the Stability and the Pharmaceutical Properties of Norfloxacin Form C Through Binary Complexes with β-Cyclodextrin. AAPS PharmSciTech 2018; 19:2255-2263. [PMID: 29748896 DOI: 10.1208/s12249-018-1033-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/24/2018] [Indexed: 11/30/2022] Open
Abstract
Norfloxacin, an antibiotic that exists in different solid forms, has very unfavorable properties in terms of solubility and stability. Binary complexes of norfloxacin, in the solid form C, and β-cyclodextrin were procured by the kneading method and physical mixture. Their effect on the solubility, the dissolution rate, and the chemical and physical stability of norfloxacin was evaluated. To perform stability studies, the solid samples were stored under accelerated storage conditions, for a period of 6 months. Physical stability was monitored through powder X-ray diffraction, high-resolution 13C solid-state nuclear magnetic resonance, and scanning electron microscopy. The results showed evidence that the kneaded complex increased and modulated the dissolution rate of norfloxacin C. Furthermore, it was demonstrated that the photochemical stability was increased in the complex, without affecting its physical stability. The results point to the conclusion that the new kneading complex of norfloxacin constitutes an alternative tool to formulate a potential oral drug delivery system with improve oral bioavailability.
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Yi L, Liang G, Xiao W, Duan W, Wang A, Zheng Y. Rapid nitrogen-rich modification of Calotropis gigantea fiber for highly efficient removal of fluoroquinolone antibiotics. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.02.060] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Dzikowski M, Castanié N, Guedon A, Verrier B, Primard C, Sohier J. Antibiotic incorporation in jet-sprayed nanofibrillar biodegradable scaffolds for wound healing. Int J Pharm 2017; 532:802-12. [DOI: 10.1016/j.ijpharm.2017.08.117] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 08/11/2017] [Accepted: 08/28/2017] [Indexed: 12/12/2022]
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Kah M, Sigmund G, Xiao F, Hofmann T. Sorption of ionizable and ionic organic compounds to biochar, activated carbon and other carbonaceous materials. Water Res 2017; 124:673-692. [PMID: 28825985 DOI: 10.1016/j.watres.2017.07.070] [Citation(s) in RCA: 188] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/27/2017] [Accepted: 07/28/2017] [Indexed: 05/12/2023]
Abstract
The sorption of ionic and ionizable organic compounds (IOCs) (e.g., pharmaceuticals and pesticides) on carbonaceous materials plays an important role in governing the fate, transport and bioavailability of IOCs. The paradigms previously established for the sorption of neutral organic compounds do not always apply to IOCs and the importance of accounting for the particular sorption behavior of IOCs is being increasingly recognized. This review presents the current state of knowledge and summarizes the recent advances on the sorption of IOCs to carbonaceous sorbents. A broad range of sorbents were considered to evaluate the possibility to read across between fields of research that are often considered in isolation (e.g., carbon nanotubes, graphene, biochar, and activated carbon). Mechanisms relevant to IOCs sorption on carbonaceous sorbents are discussed and critically evaluated, with special attention being given to emerging sorption mechanisms including low-barrier, charge-assisted hydrogen bonds and cation-π assisted π-π interactions. The key role played by some environmental factors is also discussed, with a particular focus on pH and ionic strength. Overall the review reveals significant advances in our understanding of the interactions between IOCs and carbonaceous sorbents. In addition, knowledge gaps are identified and priorities for future research are suggested.
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Affiliation(s)
- Melanie Kah
- University of Vienna, Department of Environmental Geosciences and Environmental Science Research Network, Althanstrasse 14 UZA II, 1090, Vienna, Austria.
| | - Gabriel Sigmund
- University of Vienna, Department of Environmental Geosciences and Environmental Science Research Network, Althanstrasse 14 UZA II, 1090, Vienna, Austria
| | - Feng Xiao
- Department of Civil Engineering, University of North Dakota, Grand Forks, ND, 58202, United States
| | - Thilo Hofmann
- University of Vienna, Department of Environmental Geosciences and Environmental Science Research Network, Althanstrasse 14 UZA II, 1090, Vienna, Austria.
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31
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Torge A, Wagner S, Chaves PS, Oliveira EG, Guterres SS, Pohlmann AR, Titz A, Schneider M, Beck RCR. Ciprofloxacin-loaded lipid-core nanocapsules as mucus penetrating drug delivery system intended for the treatment of bacterial infections in cystic fibrosis. Int J Pharm 2017; 527:92-102. [PMID: 28499793 DOI: 10.1016/j.ijpharm.2017.05.013] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 05/04/2017] [Accepted: 05/05/2017] [Indexed: 11/22/2022]
Abstract
Treatment of bacterial airway infections is essential for cystic fibrosis therapy. However, effectiveness of antibacterial treatment is limited as bacteria inside the mucus are protected from antibiotics and immune response. To overcome this biological barrier, ciprofloxacin was loaded into lipid-core nanocapsules (LNC) for high mucus permeability, sustained release and antibacterial activity. Ciprofloxacin-loaded LNC with a mean size of 180nm showed a by 50% increased drug permeation through mucus. In bacterial growth assays, the drug in the LNC had similar minimum inhibitory concentrations as the free drug in P. aeruginosa and S. aureus. Interestingly, formation of biofilm-like aggregates, which were observed for S. aureus treated with free ciprofloxacin, was avoided by exposure to LNC. With the combined advantages over the non-encapsulated drug, ciprofloxacin-loaded LNC represent a promising drug delivery system with the prospect of an improved antibiotic therapy in cystic fibrosis.
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32
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Shishkin M, Volkov D, Pelivanov I, Proskurnin M. Direct solubility determination in optically dense solutions of highly soluble chromophores by the optoacoustic technique: Acidity dependence for Phenol Red. Anal Chim Acta 2017; 953:57-62. [DOI: 10.1016/j.aca.2016.11.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 11/09/2016] [Accepted: 11/18/2016] [Indexed: 11/25/2022]
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33
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Zhang CL, Cui SJ, Wang Y. Thermodynamics of the solubility of sulfamethoxydiazine in organic solvents in the range 293.15–323.15 K. Russ J Phys Chem 2017. [DOI: 10.1134/s0036024417010332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Goulas A, Haudin CS, Bergheaud V, Dumény V, Ferhi S, Nélieu S, Bourdat-Deschamps M, Benoit P. A new extraction method to assess the environmental availability of ciprofloxacin in agricultural soils amended with exogenous organic matter. Chemosphere 2016; 165:460-469. [PMID: 27677122 DOI: 10.1016/j.chemosphere.2016.09.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 09/09/2016] [Accepted: 09/11/2016] [Indexed: 05/02/2023]
Abstract
Fluoroquinolone antibiotics such as ciprofloxacin can be found in soils receiving exogenous organic matter (EOM). Their long-term behavior in EOM-amended soils and their level of biodegradability are not well understood partly due to a lack of methods to estimate their environmental availability. We performed different aqueous extractions to quantify the available fraction of 14C-ciprofloxacin in soils amended with a compost of sewage sludge and green wastes or a farmyard manure contaminated at relevant environmental concentrations. After minimizing 14C-ciprofloxacin losses by adsorption on laboratory vessel tubes, three out of eleven different aqueous solutions were selected, i.e., Borax, Na2EDTA and 2-hydroxypropyl-β-cyclodextrin. During 28 d of incubation, the non-extractable fractions were very high in all samples, i.e., 57-67% of the initial 14C-activity, and the availability of the antibiotic was very low, explaining its low biodegradation. A maximum of 6.3% of the initial 14C-activity was extracted from soil/compost mixtures with the Na2EDTA solution, and 7.2% from soil/manure mixtures with the Borax solution. The available fraction level was stable over the incubation in soil/compost mixtures but slightly varied in soil/manure mixtures following the organic matter decomposition. The choice of different soft extractants highlighted different sorption mechanisms controlling the environmental availability of ciprofloxacin, where the pH and the quality of the applied EOM appeared to be determinant.
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Affiliation(s)
- Anaïs Goulas
- UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850, Thiverval-Grignon, France
| | - Claire-Sophie Haudin
- UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850, Thiverval-Grignon, France.
| | - Valérie Bergheaud
- UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850, Thiverval-Grignon, France
| | - Valérie Dumény
- UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850, Thiverval-Grignon, France
| | - Sabrina Ferhi
- UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850, Thiverval-Grignon, France
| | - Sylvie Nélieu
- UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850, Thiverval-Grignon, France
| | | | - Pierre Benoit
- UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850, Thiverval-Grignon, France
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Blokhina SV, Sharapova AV, Ol'khovich MV, Volkova ТV, Perlovich GL. Solubility, lipophilicity and membrane permeability of some fluoroquinolone antimicrobials. Eur J Pharm Sci 2016; 93:29-37. [DOI: 10.1016/j.ejps.2016.07.016] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 07/21/2016] [Accepted: 07/23/2016] [Indexed: 12/22/2022]
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Günday Türeli N, Türeli AE, Schneider M. Counter-ion complexes for enhanced drug loading in nanocarriers: Proof-of-concept and beyond. Int J Pharm 2016; 511:994-1001. [PMID: 27520732 DOI: 10.1016/j.ijpharm.2016.08.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 12/20/2022]
Abstract
Enhanced drug loading is an important prerequisite of nanomedicines, to reach administration dose while reducing the amount of excipient. Considering biocompatible and biodegradable polymers such as PLGA, pH dependent solubility characteristics along with limited organic solvent solubility of the drug hampers nanoparticle (NP) preparation. To improve loading of such molecules, a method based on using counter ions for complex formation is proposed. Formed complex alters the intrinsic solubility of active substance via electrostatic interaction without chemical modification. A proof-of-concept study was conducted with sodium dodecyl sulfate as counter-ion to fluoroquinolone antibiotic ciprofloxacin. Complex formation resulted in suppressed pH dependent solubility over pH 1.2-9.0 and an additional -80 fold increase in organic solubility was achieved. In consequence, NPs prepared by microjet reactor technology have shown enhanced drug loading efficiencies (-78%) and drug loading of 14%. Moreover, the counter-ion concept was also demonstrated with another class of antibiotics, water soluble aminoglycosides gentamycin and tobramycin. In addition, the counter ion was substituted by degradable excipients such as phosphatidic acid derivatives. Successful implementation has proven the counter-ion concept to be a platform concept that can be successfully implemented for a variety of active substances and counter-ions to enhance drug loading in nanocarriers.
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Affiliation(s)
- Nazende Günday Türeli
- MJR PharmJet GmbH, Industriestr. 1B, 66802 Überherrn, Germany; Department of Pharmacy, Biopharmaceutics and Pharmaceutical Technology, Saarland University, 66123 Saarbrücken, Germany
| | - Akif E Türeli
- MJR PharmJet GmbH, Industriestr. 1B, 66802 Überherrn, Germany
| | - Marc Schneider
- Department of Pharmacy, Biopharmaceutics and Pharmaceutical Technology, Saarland University, 66123 Saarbrücken, Germany.
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Martinez M, Mistry B, Lukacova V, Polli J, Hoag S, Dowling T, Kona R, Fahmy R. Use of Modeling and Simulation Tools for Understanding the Impact of Formulation on the Absorption of a Low Solubility Compound: Ciprofloxacin. AAPS J 2016; 18:886-97. [DOI: 10.1208/s12248-016-9913-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 04/04/2016] [Indexed: 01/07/2023]
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Chen Y, Lan T, Duan L, Wang F, Zhao B, Zhang S, Wei W. Adsorptive Removal and Adsorption Kinetics of Fluoroquinolone by Nano-Hydroxyapatite. PLoS One 2015; 10:e0145025. [PMID: 26698573 DOI: 10.1371/journal.pone.0145025] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Accepted: 11/29/2015] [Indexed: 11/24/2022] Open
Abstract
Various kinds of antibiotics, especially fluoroquinolone antibiotics (FQs) have been widely used for the therapy of infectious diseases in human and livestock. For their poorly absorbed by living organisms, large-scale misuse or abuse of FQs will foster drug resistance among pathogenic bacteria, as well as a variety of environmental problems when they were released in the environment. In this work, the adsorption properties of two FQs, namely norfloxacin (NOR) and ciprofloxacin (CIP), by nano-hydroxyapatite (n-HAP) were studied by batch adsorption experiments. The adsorption curves of FQs by n-HAP were simulated by Langmuir and Freundlich isotherms. The results shown that NOR and CIP can be adsorbed effectively by the adsorbent of n-HAP, and the adsorption capacity of FQs increase with increasing dosage of n-HAP. The optimum dosage of n-HAP for FQs removal was 20 g·L-1, in which the removal efficiencies is 51.6% and 47.3%, and an adsorption equilibrium time is 20 min. The maximum removal efficiency occurred when pH is 6 for both FQs. The adsorption isotherm of FQs fits well for both Langmuir and Freundlich equations. The adsorption of both FQs by n-HAP follows second-order kinetics.
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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] [What about the content of this article? (0)] [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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Mendes C, Wiemes BP, Buttchevitz A, Christ AP, Ribas KG, Adams AIH, Silva MAS, Oliveira PR. Investigation of β-cyclodextrin-norfloxacin inclusion complexes. Part 1. Preparation, physicochemical and microbiological characterization. Expert Rev Anti Infect Ther 2015; 13:119-29. [PMID: 25488142 DOI: 10.1586/14787210.2015.982091] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
INTRODUCTION Drugs classified as class IV by the Biopharmaceutical Classification System present significant problems in relation to effective oral administration. In the case of antibiotics, the subsequently high doses required can enhance the emergence of microorganism resistance and lead to a low rate of patient treatment adherence. OBJECTIVE In an attempt to improve physicochemical properties and microbiological activity of norfloxacin, the aim of this study was to investigate different methods (coevaporation, kneading followed by freeze-drying or spray-drying) to obtain complexes of norfloxacin and different cyclodextrins. METHODS Guest-host interactions were investigated through a complete physical-chemical characterization and the dissolution profile and microbiological activity were determined. RESULTS The formation of a complex of norfloxacin and β-cyclodextrin (1:1), obtained by kneading followed by freeze drying, led to increased drug solubility, which could maximize the oral drug absorption. CONCLUSION Moreover, the microbiological activity was enhanced by around 23.3%, demonstrating that the complex formed could represent an efficient drug delivery system.
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Affiliation(s)
- Cassiana Mendes
- Department of Pharmaceutical Sciences, Health Science Centre, Federal University of Santa Catarina, Quality Control Laboratory, J/K 207, 88040-900, Florianópolis-SC, Brazil
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Krukiewicz K, Stokfisz A, Zak JK. Two approaches to the model drug immobilization into conjugated polymer matrix. Mater Sci Eng C Mater Biol Appl 2015; 54:176-81. [PMID: 26046281 DOI: 10.1016/j.msec.2015.05.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 02/10/2015] [Accepted: 05/07/2015] [Indexed: 10/23/2022]
Abstract
The purpose of this study is to develop biocompatible and conducting coating being carrier of biologically active compounds with the potential use in neuroprosthetics. Conducting polypyrrole matrix has been used to immobilize and release model drugs, quercetin and ciprofloxacin. Two routes of immobilization are described: drugs have been incorporated in the polymer matrix in the course of the electropolymerization process or after polymerization, in the course of polymer oxidation. Using UV/Vis spectroscopic detection we demonstrate that both immobilization approaches display different drug-loading efficiencies. In the case of ciprofloxacin, drug incorporation following synthesis is a more efficient immobilization approach (final drug concentration: 43.3 (±9.5) μM/cm(2)), while for quercetin the highest loading is accomplished by drug incorporation during synthesis (final drug concentration: 29.1 (±5.9) μM/cm(2)). The process of drug incorporation results in the variation of surface morphology with respect to the method of immobilization as well as the choice of drug. The results prove that electrochemical methods are efficient procedures for making multifunctional polymer matrices which might be perspective bioactive coatings for implantable neuroprosthetic devices.
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Affiliation(s)
- Katarzyna Krukiewicz
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, M.Strzody 9, 44-100 Gliwice, Poland.
| | - Anna Stokfisz
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, M.Strzody 9, 44-100 Gliwice, Poland.
| | - Jerzy K Zak
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, M.Strzody 9, 44-100 Gliwice, Poland.
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Affiliation(s)
- Yuriy A. Abramov
- Pfizer Global Research and Development, Groton, Connecticut 06340, United States
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Affiliation(s)
- Young-Woo Park
- Daegu Animal Medical Center; 36, Dongdaegu-ro Suseong-gu Daegu 706-842 Korea
| | - Byung-Jae Kang
- Daegu Animal Medical Center; 36, Dongdaegu-ro Suseong-gu Daegu 706-842 Korea
| | - Jae Hyun Lim
- Daegu Animal Medical Center; 36, Dongdaegu-ro Suseong-gu Daegu 706-842 Korea
| | - Jung-Mo Ahn
- Incheon Technopark Bio Center; 12, Gaetbeol-ro Yeonsu-gu Incheon 406-740 Korea
| | - Hyun Sook Lim
- Daegu Metropolitan City Institute of Health and Environment; 215, Muhak-ro Suseong-gu Daegu 706-841 Korea
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Chen H, Gao B, Li H. Removal of sulfamethoxazole and ciprofloxacin from aqueous solutions by graphene oxide. J Hazard Mater 2015; 282:201-7. [PMID: 24755346 DOI: 10.1016/j.jhazmat.2014.03.063] [Citation(s) in RCA: 199] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 03/24/2014] [Accepted: 03/28/2014] [Indexed: 05/24/2023]
Abstract
As a promising nanomaterial, graphene-oxide (GO) has shown great sorption potential for environmental contaminants. This study evaluated the ability and mechanism of GO to remove sulfamethoxazole (SMX) and ciprofloxacin (CIP) from aqueous solution. Experimental and modeling results showed that GO effectively sorbed both CIP and SMX with maximum sorption capacity of 379 and 240 mg g(-1), respectively. The sorption of CIP was mainly controlled by the electrostatic attractions; while SMX sorption was mainly though π-π EDA attraction on the basal planes of the GO. Solution pH showed strong effect on the sorption ability of GO to the two antibiotics: at pH of 2, GO sorption ability decreased for both CIP and SMX; at pH of 9, GO completely lost SMX sorption ability but still showed strong sorption to CIP. Both NaCl and CaCl2 decreased CIP sorption onto GO and CaCl2 showed high efficiency even at low ionic strength. The effect of NaCl and CaCl2 on SMX sorption was weaker, but higher ionic strength also reduced the sorption of SMX onto GO. At solution pH of 2, sorption of CIP destabilized GO suspension to form aggregates. Results obtained from this work demonstrated that GO can be used as an effective adsorbents to removal antibiotics from water.
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Affiliation(s)
- Hao Chen
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA.
| | - Hui Li
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA
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Abstract
Bacteria adapt to growth in lungs of patients with cystic fibrosis (CF) by selection of heterogeneously resistant variants that are not detected by conventional susceptibility testing but are selected for rapidly during antibacterial treatment. Therefore, total bacterial counts and antibiotic susceptibilities are misleading indicators of infection and are not helpful as guides for therapy decisions or efficacy endpoints. High drug concentrations delivered by aerosol may maximize efficacy, as decreased drug susceptibilities of the pathogens are compensated for by high target site concentrations. However, reductions of the bacterial load in sputum and improvements in lung function were within the same ranges following aerosolized and conventional therapies. Furthermore, the use of conventional pharmacokinetic/pharmacodynamic (PK/PD) surrogates correlating pharmacokinetics in serum with clinical cure and presumed or proven eradication of the pathogen as a basis for PK/PD investigations in CF patients is irrelevant, as minimization of systemic exposure is one of the main objectives of aerosolized therapy; in addition, bacterial pathogens cannot be eradicated, and chronic infection cannot be cured. Consequently, conventional PK/PD surrogates are not applicable to CF patients. It is nonetheless obvious that systemic exposure of patients, with all its sequelae, is minimized and that the burden of oral treatment for CF patients suffering from chronic infections is reduced.
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Affiliation(s)
- Axel Dalhoff
- University Medical Center Schleswig-Holstein, Institute for Infection Medicine, Kiel, Germany
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Suliman AS, Anderson RJ, Elkordy AA. Norfloxacin as a model hydrophobic drug with unique release from liquisolid formulations prepared with PEG200 and Synperonic PE/L-61 non-volatile liquid vehicles. POWDER TECHNOL 2014. [DOI: 10.1016/j.powtec.2014.02.048] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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48
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Florindo C, Costa A, Matos C, Nunes SL, Matias AN, Duarte CMM, Rebelo LPN, Branco LC, Marrucho IM. Novel organic salts based on fluoroquinolone drugs: synthesis, bioavailability and toxicological profiles. Int J Pharm 2014; 469:179-89. [PMID: 24746413 DOI: 10.1016/j.ijpharm.2014.04.034] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/09/2014] [Accepted: 04/12/2014] [Indexed: 11/19/2022]
Abstract
In order to overcome the problems associated with low water solubility, and consequently low bioavailability of active pharmaceutical ingredients (APIs), novel organic salts containing fluoroquinolones (e.g. ciprofloxacin and norfloxacin) were prepared, using an optimized synthetic procedure based on direct protonation, with different biocompatible counter ions such as mesylate, gluconate and glycolate. All the prepared organic salts were characterized by spectroscopic techniques, mass spectrometry and thermal analysis. Solubility studies in water and simulated biological fluids at 25°C and 37°C were also performed. Additionally, octanol-water and phospholipid-water partition coefficients were measured at 25°C. The cytotoxicity and anti-inflammatory efficacy using an human cell model of intestinal epithelia (Caco-2 cells) were also evaluated and compared to those of the parent APIs. The adequate selection of the biocompatible anions allows the tuning of important physical, thermal and toxicological properties.
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Affiliation(s)
- Catarina Florindo
- Instituto de Tecnologia Química e Biológica,(1) Universidade Nova de Lisboa, Avenida da República, Estação Agronómica Nacional, Oeiras, 2780-157, Portugal
| | - Alexandra Costa
- Departamento de Química, REQUIMTE-CQFB, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Caparica, 2829-516, Portugal
| | - Carla Matos
- Grupo de Investigação em Bioengenharia e Química Biofarmacêutica, Faculdade de Ciências da Saúde, Universidade Fernando Pessoa, Porto 4200-150, Portugal
| | - Sara L Nunes
- Instituto de Biologia Experimental e Tecnológica, Apartado 12, Oeiras, 2781-901, Portugal
| | - Ana N Matias
- Instituto de Biologia Experimental e Tecnológica, Apartado 12, Oeiras, 2781-901, Portugal
| | - Catarina M M Duarte
- Instituto de Biologia Experimental e Tecnológica, Apartado 12, Oeiras, 2781-901, Portugal
| | - Luís Paulo N Rebelo
- Instituto de Tecnologia Química e Biológica,(1) Universidade Nova de Lisboa, Avenida da República, Estação Agronómica Nacional, Oeiras, 2780-157, Portugal
| | - Luís C Branco
- Departamento de Química, REQUIMTE-CQFB, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Caparica, 2829-516, Portugal.
| | - Isabel M Marrucho
- Instituto de Tecnologia Química e Biológica,(1) Universidade Nova de Lisboa, Avenida da República, Estação Agronómica Nacional, Oeiras, 2780-157, Portugal.
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Li H, Zhang D, Han X, Xing B. Adsorption of antibiotic ciprofloxacin on carbon nanotubes: pH dependence and thermodynamics. Chemosphere 2014; 95:150-155. [PMID: 24094774 DOI: 10.1016/j.chemosphere.2013.08.053] [Citation(s) in RCA: 181] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 08/08/2013] [Accepted: 08/16/2013] [Indexed: 05/28/2023]
Abstract
The environmental risks of antibiotics have attracted increasing research attention, but their environmental behaviors remain unclear. In this study, functionalized carbon nanotubes (CNTs), namely, hydroxylized (MH), carboxylized (MC), graphitized multi-walled CNTs (MG) and single-walled CNTs (SW) were used as adsorbents and ciprofloxacin (CIP) as an adsorbate to investigate the effect of pH and temperature on sorption and desorption processes. Sorption isotherms of CIP were fitted well by Freundlich and Dubinin-Ashtakhov models. Highly nonlinear isotherms of CIP were observed, indicating the highly heterogeneous site energy distribution on CNTs. At all pHs, SW had the highest sorption for CIP due to its largest surface area among all CNTs. Sorption distinction between MH and MC was explained by π-π electron donor-acceptor interactions. For SW, CIP sorption was thermodynamically favorable and endothermic associated with an entropy driven process, while the reverse process occurred for MC and MG. The rearrangement of CNTs bundles/aggregates and covalent bond formation may be responsible for CIP desorption hysteresis on CNTs. Desorption of antibiotics from CNTs may lead to potential exposure, particularly under changing environmental conditions such as temperature and pH.
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Affiliation(s)
- Haibo Li
- College of Plant Sciences, Jilin University of Agricultural Science & Technology, Jilin 132101, China; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, USA
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Imaoka A, Hattori M, Akiyoshi T, Ohtani H. Decrease in Ciprofloxacin Absorption by Polyvalent Metal Cations Is Not Fully Attributable to Chelation or Adsorption. Drug Metab Pharmacokinet 2014; 29:414-8. [DOI: 10.2133/dmpk.dmpk-14-rg-001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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