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Thi Phuong Thao N, Nguyen NY, Co VB, Thanh LHV, Nguyen MQ, Pan-On S, Pham DT. Formulations of poly(vinyl alcohol) functionalized silk fibroin nanoparticles for the oral delivery of zwitterionic ciprofloxacin. PLoS One 2024; 19:e0306140. [PMID: 39088490 PMCID: PMC11293643 DOI: 10.1371/journal.pone.0306140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 06/11/2024] [Indexed: 08/03/2024] Open
Abstract
Fibroin nanoparticles (FNP) have been employed in numerous biomedical applications. However, limited research has focused on the oral delivery of FNP and in-depth molecular interactions between the encapsulated drug and FNP. Therefore, this work developed the FNP, functionalized with poly(vinyl alcohol) (PVA), to orally deliver the zwitterionic ciprofloxacin, focused on the molecular interactions. The particles were formulated using both desolvation (the drug precipitated during the particles formulation) and adsorption (the drug adsorbed on the particles surfaces) methods. The optimal formula possessed a size of ~630 nm with narrow size distribution (measured by DLS method), spherical shape (determined by SEM), and moderate drug loading (confirmed by FT-IR, XRD, and DSC techniques) of ~50% for the desolvation method and ~43% for the adsorption method. More than 80% of the drug molecules resided on the particle surfaces, mainly via electrostatic forces with fibroin. The drug was physically adsorbed onto FNP, which followed Langmuir model and pseudo second-order kinetics. In the in-vitro simulated gastric condition at pH 1.2, the ciprofloxacin bound strongly with FNP via electrostatic forces, thus hindering the drug release (< 40%). Contrastingly, in the simulated intestinal condition at pH 6.8, the particles could control the drug release rates dependent on the PVA amount, with up to ~100% drug release. Lastly, the particles possessed adequate antibacterial activities on Bacillus subtilis, Escherichia coli, and Salmonella enterica, with MIC of 128, 8, and 32 μg/mL, respectively. In summary, the FNP and PVA functionalized FNP could be a potential oral delivery system for zwitterionic drugs.
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Affiliation(s)
| | - Ngoc Yen Nguyen
- Department of Health Sciences, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Van Ben Co
- Department of Health Sciences, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Luong Huynh Vu Thanh
- Faculty of Chemical Engineering, College of Engineering, Can Tho University, Can Tho, Vietnam
| | - Manh Quan Nguyen
- Department of Analytical Chemistry-Drug Quality Control, Faculty of Pharmacy, Can Tho University of Medicine and Pharmacy, Can Tho, Vietnam
| | - Suchiwa Pan-On
- Faculty of Pharmaceutical Sciences, Burapha University, Chonburi, Thailand
| | - Duy Toan Pham
- Department of Health Sciences, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
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Xu Y, Gu Y, Peng L, Wang N, Chen S, Liang C, Liu Y, Ni BJ. Unravelling ciprofloxacin removal in a nitrifying moving bed biofilm reactor: Biodegradation mechanisms and pathways. CHEMOSPHERE 2023; 320:138099. [PMID: 36764613 DOI: 10.1016/j.chemosphere.2023.138099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/13/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Although moving bed biofilm reactors (MBBRs) have shown excellent antibiotic removal potentials, the information on underlying mechanisms is yet limited. This work assessed the removal of ciprofloxacin in an enriched nitrifying MBBR by clarifying the contribution of adsorption and microbial-induced biodegradation. Results demonstrated the considerable biomass adsorption (55%) in first 30 min. Limiting nitrite oxidizing bacteria growth or inhibiting nitrification would lead to lower adsorption capacities. The highest ciprofloxacin biodegradation rate constant was 0.082 L g SS-1 h-1 in the presence of ammonium, owing to ammonia oxidizing bacteria (AOB)-induced cometabolism, while heterotrophs played an insignificant role (∼9%) in ciprofloxacin biodegradation. The developed model also suggested the importance of AOB-induced cometabolism and metabolism over heterotrophs-induced biodegradation by analyzing the respective biodegradation coefficients. Cometabolic biodegradation pathways of ciprofloxacin mainly involved the piperazine ring cleavage, probably alleviating antimicrobial activities. It implies the feasibility of nitrifying biofilm systems towards efficient antibiotic removal from wastewater.
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Affiliation(s)
- Yifeng Xu
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei, 430070, China; Shenzhen Research Institute of Wuhan University of Technology, Shenzhen, 518000, Guangdong, China
| | - Ying Gu
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei, 430070, China
| | - Lai Peng
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei, 430070, China; Shenzhen Research Institute of Wuhan University of Technology, Shenzhen, 518000, Guangdong, China.
| | - Ning Wang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei, 430070, China
| | - Shi Chen
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei, 430070, China
| | - Chuanzhou Liang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei, 430070, China; Shenzhen Research Institute of Wuhan University of Technology, Shenzhen, 518000, Guangdong, China.
| | - Yiwen Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
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Coba‐Jiménez L, Maza J, Guerra M, Deluque‐Gómez J, Cubillán N. Interaction of Ciprofloxacin with Arabinose, Glucosamine, Glucuronic Acid and Rhamnose: Insights from Genetic Algorithm and Quantum Chemistry. ChemistrySelect 2022. [DOI: 10.1002/slct.202103836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ludis Coba‐Jiménez
- Programa de Química Facultad de Ciencias Básicas Universidad del Atlántico Barranquilla Colombia
| | - Julio Maza
- Programa de Química Facultad de Ciencias Básicas Universidad del Atlántico Barranquilla Colombia
| | - Mayamarú Guerra
- Laboratorio de Óptica y Procesamiento de Imágenes Facultad de Ciencias Básicas Universidad Tecnológica de Bolívar Turbaco Colombia
| | - Julio Deluque‐Gómez
- Programa de Ingeniería Industrial Facultad de Ingenierías Universidad de la Guajira Riohacha Colombia
| | - Néstor Cubillán
- Programa de Química Facultad de Ciencias Básicas Universidad del Atlántico Barranquilla Colombia
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Yu J, Gao D, Zhang Y, Yu X, Cheng J, Jin L, Lyu Y, Du Z, Guo M. Multiple roles of Ca 2+ in the interaction of ciprofloxacin with activated sludge: Spectroscopic investigations of extracellular polymeric substances. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 751:142246. [PMID: 33181976 DOI: 10.1016/j.scitotenv.2020.142246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/13/2020] [Accepted: 09/04/2020] [Indexed: 06/11/2023]
Abstract
Calcium ion is an important cation influencing the binding of recalcitrant organic contaminants with activated sludge during wastewater treatment process, but there is still unknown about its role in amphoteric fluoroquinolones binding. Binding experiments show that Ca2+ markedly inhibited binding of ciprofloxacin (CIP) onto sludge, causing 7-203 times of CIP release. Multi-spectroscopic examinations indicate that tryptophan-like and tyrosine-like proteins in extracellular polymeric substances (EPS) were dominant components for CIP binding by static quenching and forming CIP-proteins complexes. Addition of Ca2+ into EPS and CIP binding systems induced increase of association constants (from 0.024-0.064 to 0.027-0.084 L/μmol) and binding constants (from 0.002-0.039 to 0.012-0.107) and decrease of binding sites number (from 0.893-2.007 to 0.721-1.386). Functional groups of EPS and secondary structure of proteins were remarkably changed upon reactions with CIP and Ca2+. Calcium ion interacted with EPS and CIP binding system in two distinct ways: Ca2+ shielded CO in amide I in EPS for CIP binding, whereas strengthened binding between CIP and functional groups including CO in carboxyl groups in extra-microcolony polymers and OH in extra-cellular polymers by forming ternary complexes. Cation competition for CO in amide I is responsible for Ca2+ induced CIP release from the sludge. Results suggest the highly potential release of CIP from high saline wastewater and cation-conditioned sludge which needs further monitoring and evaluation.
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Affiliation(s)
- Jie Yu
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Doudou Gao
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Ying Zhang
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Xubiao Yu
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Junrui Cheng
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Lizi Jin
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Yang Lyu
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Zhimin Du
- Institute of Biology Co. Ltd., Henan Academy of Sciences, Zhengzhou 450008, China
| | - Minhui Guo
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China.
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Lyu Y, Yu J, Guo M, Wang K, Yu Z, Zhang L, Zhang Y, Chen L. New insights into interaction of proteins in extracellular polymeric substances of activated sludge with ciprofloxacin using quartz crystal microbalance with dissipation. CHEMOSPHERE 2021; 263:128044. [PMID: 33297059 DOI: 10.1016/j.chemosphere.2020.128044] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/27/2020] [Accepted: 08/16/2020] [Indexed: 06/12/2023]
Abstract
Proteins in extracellular polymeric substances play a vital role in adsorbing organic contaminants in biological wastewater treatment processes, but there is still lack of a fast and effective approach to monitor their interaction. Quartz crystal microbalance with dissipation (QCM-D) was used to investigate the binding and viscoelastic properties of ciprofloxacin (CIP) on extracellular proteins from activated sludge by a two-step sequential deposition method. A saturated viscoelastic monolayer of proteins was formed on the crystal by injecting 500 mg L-1 extracellular proteins. Binding of CIP with the extracellular proteins film followed the pseudo-first-order kinetic equation and Langmuir model, with the maximum binding capacity of 172.4 mg g-1. The binding mass, energy dissipation, and reaction rate constant increased with increasing CIP concentration. A strong binding was obtained at pH 5, suggesting electrostatic interactions as the dominating binding mechanism. Cations inhibited CIP binding with extracellular proteins, probably due to cations competition. Two binding periods were distinguished according to the viscoelastic properties of CIP layer: viscous binding in the initial period and elastic towards binding saturation. Results highlighted QCM-D as an effective and real-time technique to evaluate the role of extracellular proteins in contaminants removal.
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Affiliation(s)
- Yang Lyu
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| | - Jie Yu
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China.
| | - Minhui Guo
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Kan Wang
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| | - Zhenxun Yu
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| | - Lingxiao Zhang
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| | - Ying Zhang
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| | - Leilei Chen
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
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Effect of the C/N Ratio on Biodegradation of Ciprofloxacin and Denitrification from Low C/N Wastewater as Assessed by a Novel 3D-BER System. SUSTAINABILITY 2020. [DOI: 10.3390/su12187611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Emerging pollutants in the form of pharmaceuticals have drawn international attention during the past few decades. Ciprofloxacin (CIP) is a common drug widely found in effluents from hospitals, industrial and different wastewater treatment plants, as well as rivers. In this work, the lab-scale 3D-BER system was established, and more than 90% of the antibiotic CIP was removed from Low C/N wastewater. The best results were obtained with the current intensity being taken into account, and a different C/N ratio significantly improved the removal of CIP and nitrates when the ideal conditions were C/N = 1.5–3.5, pH = 7.0–7.5 and I = 60 mA. The highest removal efficiency occurred when CIP = 94.2%, NO3−-N = 95.5% and total nitrogen (TN) = 84.3%, respectively. In this novel system, the autotrophic-heterotrophic denitrifying bacteria played a vital role in the removal of CIP and an enhanced denitrification process. Thus, autotrophic denitrifying bacteria uses CO2 and H2 as carbon sources to reduce nitrates to N2. This system has the assortment and prosperous community revealed at the current intensity of 60 mA, and the analysis of bacterial community structure in effluent samples fluctuates under different conditions of C/N ratios. Based on the results of LC-MS/MS analysis, the intermediate products were proposed after efficient biodegradation of CIP. The microbial community on biodegrading was mostly found at phylum, and the class level was dominantly responsible for the NO3−-N and biodegradation of CIP. This work can provide some new insights towards the biodegradation of CIP and the efficient removal of nitrates from low C/N wastewater treatment through the novel 3D-BER system.
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