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Zhang YT, Zhang Z, Zhang M, Zhang C, Chen H, Wang F, Xie L, Mu J. Surface functional groups on nanoplastics delay the recovery of gut microbiota after combined exposure to sulfamethazine in marine medaka (Oryzias melastigma). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 267:106813. [PMID: 38183774 DOI: 10.1016/j.aquatox.2023.106813] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/12/2023] [Accepted: 12/20/2023] [Indexed: 01/08/2024]
Abstract
Nanoplastics can interact with antibiotics, altering their bioavailability and the ensuing toxicity in marine organisms. It is reported that plain polystyrene (PS) nanoplastics decrease the bioavailability and adverse effects of sulfamethazine (SMZ) on the gut microbiota in Oryzias melastigma. However, the influence of surface functional groups on the combined effects with SMZ remains largely unknown. In this study, adult O. melastigma were fed diet amended with 4.62 mg/g SMZ and 3.65 mg/g nanoplastics (i.e., plain PS, PS-COOH and PS-NH2) for 30 days (F0-E), followed by a depuration period of 21 days (F0-D). In addition, the eggs produced on the last day of exposure were cultured under standard protocols without further exposure for 2 months (F1 fish). The results showed that the alpha diversity or the bacterial community of gut microbiota did not differ among the SMZ + PS, SMZ + PS-COOH, and SMZ + PS-NH2 groups in the F0-E and F1 fish. Interestingly, during the depuration, a clear recovery of gut microbiota (e.g., increases in the alpha diversity, beneficial bacteria abundances and network complexity) was found in the SMZ + PS group, but not for the SMZ + PS-COOH and SMZ + PS-NH2 groups, indicating that PS-COOH and PS-NH2 could prolong the toxic effect of SMZ and hinder the recovery of gut microbiota. Compared to plain PS, lower egestion rates of PS-COOH and PS-NH2 were observed in O. melastigma. In addition, under the simulated fish digest conditions, the SMZ-loaded PS-NH2 was found to desorb more SMZ than the loaded PS and PS-COOH. These results suggested that the surface -COOH and -NH2 groups on PS could influence their egestion efficiency and the adsorption/desorption behavior with SMZ, resulting in a long-lasting SMZ stress in the gut during the depuration phase. Our findings highlight the complexity of the carrier effect and ecological risk of surface-charged nanoplastics and the interactions between nanoplastics and antibiotics in natural environments.
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Affiliation(s)
- Yu Ting Zhang
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, College of Geography and Oceanography, Minjiang University, Fuzhou, 350108, China
| | - Zhi Zhang
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, College of Geography and Oceanography, Minjiang University, Fuzhou, 350108, China
| | - Mingdong Zhang
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, College of Geography and Oceanography, Minjiang University, Fuzhou, 350108, China
| | - Chaoyue Zhang
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, College of Geography and Oceanography, Minjiang University, Fuzhou, 350108, China
| | - Hongxing Chen
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Feipeng Wang
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, College of Geography and Oceanography, Minjiang University, Fuzhou, 350108, China
| | - Lingtian Xie
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China.
| | - Jingli Mu
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, College of Geography and Oceanography, Minjiang University, Fuzhou, 350108, China.
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Hosny S, Ragab MS, Abd El-Baki RF. Synthesis of a new sulfadimidine Schiff base and their nano complexes as potential anti-COVID-19 and anti-cancer activity. Sci Rep 2023; 13:1502. [PMID: 36707628 PMCID: PMC9880939 DOI: 10.1038/s41598-023-28402-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 01/18/2023] [Indexed: 01/29/2023] Open
Abstract
The primary objective of this study was to describe the cytotoxicity on HEPG-2 cells and to study the COVID‑19 activities of the novel H2L ligand and its Cr and Cu nano-complexes. As well as exploring the chemistry of the prepared nano-complexes. In this paper novel Schiff base, N-(4, 6-dimethyl pyrimidin-2-yl)-4-(((2-hydroxyl naphthalene-1-y l) methylene) amino) benzene-sulfonamidesulfonyl) amide has been synthesized. The novel Schiff base H2L is used to synthesize novel nano and micro-complexes with CrCl2.6H2O and CuCl2.2H2O. The prepared ligand and micro complexes were interpreted by different spectroscopic techniques. The nano-sized Cr and Cu complexes were synthesized in an environmentally friendly manner using Coriandrum sativum (CS) media extract in ethanol. The structure, morphologies and particle size of the nano-sized complexes were determined using FT-IR, TEM, and PXRD. The results showed that the nano-domain complexes are on the Sub-nano scale. Furthermore, using TGA, we studied the effect of heat on the size of newly prepared nano-complexes. Experimental data were supported by DFT calculations. The findings revealed that the metal complexes investigated are more stable than the free ligand H2L. The antitumor activity was examined before and after heating the nano-complexes at 200 °C. The results reveal the Cr nano complex, after heating, exhibited strong antitumor activity with IC50 value (3.349 μg/ml). The tested Cu nano-complex shows good DNA cleavage. The liver cancer and COVID19 proteins were examined using molecular docking to identify the potential binding energy of inhibitors.
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Affiliation(s)
- Shimaa Hosny
- Department of Chemistry, Faculty of Science, New Valley University, Alkharga, 72511, Egypt.
| | - Mona S Ragab
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Randa F Abd El-Baki
- Department of Chemistry, Faculty of Science, New Valley University, Alkharga, 72511, Egypt
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Fan Y, Zheng C, Lin Z, Huo A, Li R, He C. Influence of sulfamethazine (SMT) on the adsorption of antimony by the black soil: Implication for the complexation between SMT and antimony. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 760:143318. [PMID: 33223156 DOI: 10.1016/j.scitotenv.2020.143318] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/17/2020] [Accepted: 10/18/2020] [Indexed: 06/11/2023]
Abstract
This paper reported when sulfamethazine (SMT) and antimony (Sb(V)) coexisted in aqueous solution at pH of 3.0, 5.0 and 7.0, the complexation between SMT and Sb(V) occurred. Such a complexation impeded the adsorption of Sb(V) on the black soil. The higher the solution pH value was, the more the amount of Sb(V) was prevented from adsorbing on the black soil. The maximum adsorption capacity (qm) of Sb(V) at the presence of SMT under pH of 3.0, 5.0 and 7.0 was 5.28, 3.45 and 1.95 mg/g, respectively. -NH2, NH, SO and CN of pyrimidine ring carried by SMT acted as the complexation sites with Sb(V). The complexation constant K were - 3.15, -3.26 and - 3.48 at pH of 7.0, 5.0 and 3.0, respectively, indicating that the complexation strength between SMT and Sb(V) followed the order of pH 7.0 > pH 5.0 > pH 3.0. The binding energy between Sb(V) and the CN group of pyrimidine ring was the highest (1.42 eV), and then followed by the groups of -NH (1.37 eV), SO (0.66 eV) and -NH2 (0.39 eV). Besides SO and CN, Sb(V) tends to complex with NH via coordination bond at pH of 7.0 while -NH2 via cation-π interaction at pH 3.0 and 5.0. Compared to pH of 5.0, the strength of cation-π interaction at pH of 3.0 weakened according to the molecular electrostatic potential map. These results demonstrated that different from the situation where Sb(V) exists in aqueous solution alone, the coexistence of SMT with Sb(V) affected the adsorption behavior of Sb(V) in soil and solution pH was also an influence factor. These findings in this paper would be helpful for further understanding the mobility, bioavailability and other environmental behavior of Sb(V) in soil when Sb(V) coexists with antibiotics even other organic compounds.
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Affiliation(s)
- Yurui Fan
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Chunli Zheng
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China; Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, PR China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS, Xi'an, PR China.
| | - Zishen Lin
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Aidi Huo
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of the Ministry of Education, Chang'an University, Xi'an 710054, PR China; School of Water and Environment, Chang'an University, Xi'an 710054, PR China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS, Xi'an, PR China.
| | - Risheng Li
- Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd, Xi'an, PR China
| | - Chi He
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
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Mansour AM, Abdel‐Ghani NT, Ragab MS. DNA/bovine serum albumin binding and cytotoxicity of transition metal ternary complexes based on sulfamethazine and bromazepam drugs. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5995] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ahmed M. Mansour
- Department of Chemistry, Faculty of Science Cairo University Gamma Street Giza 12613 Egypt
| | - Nour T. Abdel‐Ghani
- Department of Chemistry, Faculty of Science Cairo University Gamma Street Giza 12613 Egypt
| | - Mona S. Ragab
- Department of Chemistry, Faculty of Science Cairo University Gamma Street Giza 12613 Egypt
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5
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Mansour AM, Radacki K. Experimental and DFT studies of sulfadiazine 'piano-stool' Ru(ii) and Rh(iii) complexes. RSC Adv 2020; 10:10673-10680. [PMID: 35492929 PMCID: PMC9050370 DOI: 10.1039/d0ra01085e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 02/28/2020] [Indexed: 11/21/2022] Open
Abstract
While sulfadiazine (HLSZ) is extensively used to elaborate complexes of intriguing biological applications (e.g. topical antibiotic silvadene; silver sulfadiazine), the molecular structure modification of sulfadiazine or even other sulfa drugs by coordination to either η6-cymene Ru(ii) or η5-Cp* Rh(iii) motif has not been investigated. Here, half-sandwich organoruthenium(ii) and organorhodium(iii) compounds of the type [(η6-p-cymene)Ru(LSZ)2] (1) and [(η5-C5Me5)Rh(LSZ)2] (2) are synthesized, characterized and evaluated for their potential antimicrobial activity. Spectroscopic and single crystal X-ray analysis showed that LSZ is coordinated to Rh(iii) via both the sulfonamide and pyrimidine nitrogen atoms forming "piano-stool" geometry. In 2, the NMR equivalence clearly pointed to participation of two LSZ molecules in a fluxional process in which the third bond of the base of the stool is oscillating between two equivalent sulfonamide nitrogen atoms. While 1 was biologically inactive, complex 2 was potent against Gram-positive bacteria, Candida albicans and Cryptococcus neoformans. Hen white egg lysozyme (HEWL), a model protein, reacted covalently with 2via the loss of one LSZ molecule, while compound 1 decomposed during the interaction with that protein.
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Affiliation(s)
- Ahmed M Mansour
- Department of Chemistry, Faculty of Science, Cairo University Gamma Street Giza Cairo 12613 Egypt
| | - Krzysztof Radacki
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland D-97074 Würzburg Germany
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6
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Tang T, Yang C, Wang L, Jiang X, Dang Z, Huang W. Complexation of sulfamethazine with Cd(II) and Pb(II): implication for co-adsorption of SMT and Cd(II) on goethite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:11576-11583. [PMID: 29427278 DOI: 10.1007/s11356-017-1026-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 12/12/2017] [Indexed: 06/08/2023]
Abstract
This study quantified the complex stability constants of sulfamethazine (SMT) with cadmium (Cd2+) and lead (Pb2+) under different pH conditions. The UV-Vis spectrophotometer was used for acquiring the complexation data. Results showed that the complex stability constants of SMT with cadmium (Cd2+) and lead (Pb2+) increased as a function of the solution pH. In the investigated pH range, Cd2+ showed stronger complex affinity with SMT than Pb2+. It appeared that cation-π interactions might dominate the complex between SMT with Pb2+ and Cd2+ at acid environment, and the covalent bonding might play a major role at neutral environment. Batch adsorption equilibrium experiment showed that the sorption capacity of Cd2+ on goethite increased from 3.83 to 7.64 mg/g along with the addition of 1 mg/L SMT, indicating SMT can impede the transportation of Cd. In general, this study worked out the complexation constants and clarified the complexation mechanism between SMT with lead and cadmium, while sorption experiment indicated that sorption of Cd onto goethite was enhanced with SMT.
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Affiliation(s)
- Ting Tang
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China
| | - Chen Yang
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China.
| | - Li Wang
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China
| | - Xianying Jiang
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China
| | - Zhi Dang
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China
| | - Weilin Huang
- Department of Environmental Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ, 08901, USA.
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7
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Villa-Pérez C, Cadavid-Vargas JF, Di Virgilio AL, Echeverría GA, Camí GE, Soria DB. Crystal structure, Hirshfeld surface analysis, spectroscopic and biological studies on sulfamethazine and sulfaquinoxaline ternary complexes with 2,2′-biquinoline. NEW J CHEM 2018. [DOI: 10.1039/c7nj03624h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Three ternary complexes with sulfaquinoxaline or sulfamethazine have been synthesized and their structural, spectroscopic and biological properties have been studied.
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Affiliation(s)
- C. Villa-Pérez
- CEQUINOR
- CONICET
- CCT La Plata
- Departamento de Química
- Facultad de Ciencias Exactas
| | | | - A. L. Di Virgilio
- CEQUINOR
- CONICET
- CCT La Plata
- Departamento de Química
- Facultad de Ciencias Exactas
| | - G. A. Echeverría
- IFLP
- CONICET
- CCT La Plata
- Departamento de Física
- Facultad de Ciencias Exactas
| | - G. E. Camí
- Química General e Inorgánica
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario
- Argentina
| | - D. B. Soria
- CEQUINOR
- CONICET
- CCT La Plata
- Departamento de Química
- Facultad de Ciencias Exactas
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8
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Yang Q, Li X, Chen G, Zhang J, Xing B. Effect of humic acid on the sulfamethazine adsorption by functionalized multi-walled carbon nanotubes in aqueous solution: mechanistic study. RSC Adv 2016. [DOI: 10.1039/c5ra26913j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
The presence of humic acid (HA) inhibited sulfamethazine (SMZ) adsorption by three types of multi-walled carbon nanotubesviacompetitive interactions, molecular sieving, and pore blockage in solution (pH < 9).
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Affiliation(s)
- Quanquan Yang
- Research Institute of Subtropical Forestry
- Chinese Academy of Forestry
- Fuyang
- China
| | - Xiaogang Li
- Research Institute of Subtropical Forestry
- Chinese Academy of Forestry
- Fuyang
- China
| | - Guangcai Chen
- Research Institute of Subtropical Forestry
- Chinese Academy of Forestry
- Fuyang
- China
| | - Jianfeng Zhang
- Research Institute of Subtropical Forestry
- Chinese Academy of Forestry
- Fuyang
- China
| | - Baoshan Xing
- Stockbridge School of Agriculture
- University of Massachusetts
- Amherst
- USA
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9
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Maurya R, Malik B, Mir J, Vishwakarma P, Rajak D, Jain N. Nickel(II) complexes of ONS donor Schiff base ligands: synthesis, combined DFT-experimental characterization, redox, thermal, and in vitro biological investigation. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1064526] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- R.C. Maurya
- Coordination, Bioinorganic and Computational Chemistry Laboratory, Department of P.G. Studies and Research in Chemistry & Pharmacy, R.D. University, Jabalpur, India
| | - B.A. Malik
- Coordination, Bioinorganic and Computational Chemistry Laboratory, Department of P.G. Studies and Research in Chemistry & Pharmacy, R.D. University, Jabalpur, India
| | - J.M. Mir
- Coordination, Bioinorganic and Computational Chemistry Laboratory, Department of P.G. Studies and Research in Chemistry & Pharmacy, R.D. University, Jabalpur, India
| | - P.K. Vishwakarma
- Coordination, Bioinorganic and Computational Chemistry Laboratory, Department of P.G. Studies and Research in Chemistry & Pharmacy, R.D. University, Jabalpur, India
| | - D.K. Rajak
- Coordination, Bioinorganic and Computational Chemistry Laboratory, Department of P.G. Studies and Research in Chemistry & Pharmacy, R.D. University, Jabalpur, India
| | - N. Jain
- Coordination, Bioinorganic and Computational Chemistry Laboratory, Department of P.G. Studies and Research in Chemistry & Pharmacy, R.D. University, Jabalpur, India
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10
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Mansour AM, Mohamed RR. Sulfamethazine copper(ii) complexes as antimicrobial thermal stabilizers and co-stabilizers for rigid PVC: spectroscopic, thermal, and DFT studies. RSC Adv 2015. [DOI: 10.1039/c4ra07212j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Binary and ternary Cu(ii) complexes of the sulfamethazine antibacterial drug have been prepared, characterized, and tested for their antibacterial thermal stabilizer efficiency for PVC.
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Affiliation(s)
- Ahmed M. Mansour
- Chemistry Department
- Faculty of Science
- Cairo University
- Giza 12613
- Egypt
| | - Riham R. Mohamed
- Chemistry Department
- Faculty of Science
- Cairo University
- Giza 12613
- Egypt
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11
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Yang Q, Chen G, Zhang J, Li H. Adsorption of sulfamethazine by multi-walled carbon nanotubes: effects of aqueous solution chemistry. RSC Adv 2015. [DOI: 10.1039/c4ra15056b] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The adsorption of SMZ by MWCNTs was studied under varied pH, ionic strength, cations and anions in solution. The results indicated that hydrophobic and electrostatic interactions were the main adsorption mechanisms, and π–π interaction also played an important role.
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Affiliation(s)
- Quanquan Yang
- Research Institute of Subtropical Forestry
- Chinese Academy of Forestry
- Fuyang
- China
| | - Guangcai Chen
- Research Institute of Subtropical Forestry
- Chinese Academy of Forestry
- Fuyang
- China
- Stockbridge School of Agriculture
| | - Jianfeng Zhang
- Research Institute of Subtropical Forestry
- Chinese Academy of Forestry
- Fuyang
- China
| | - Helian Li
- School of Resources and Environment
- University of Jinan
- Jinan 250022
- China
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12
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Mansour AM, Shehab OR. Trapping of muscle relaxant methocarbamol degradation product by complexation with copper(II) ion: spectroscopic and quantum chemical studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 128:263-271. [PMID: 24674917 DOI: 10.1016/j.saa.2014.02.142] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 02/13/2014] [Accepted: 02/21/2014] [Indexed: 06/03/2023]
Abstract
Structural properties of methocarbamol (Mcm) were extensively studied both experimentally and theoretically using FT IR, (1)H NMR, UV-Vis., geometry optimization, Mulliken charge, and molecular electrostatic potential. Stability arises from hyper-conjugative interactions, charge delocalization and H-bonding was analyzed using natural bond orbital (NBO) analysis. Mcm was decomposed in ethanol/water mixture at 80°C to guaifenesin [(RS)-3-(2-methoxyphenoxy)propane-1,2-diol] and carbamate ion [NH2COO(-)], where the degradation mechanism was explained by trapping the carbamate ion via the complexation with copper(II) ion. The structure of the isolated complex ([Cu(NH2COO)2(H2O)]⋅4H2O) was elucidated by spectral, thermal, and magnetic tools. Electronic spectra were discussed by TD-DFT and the descriptions of frontier molecular orbitals and the relocations of the electron density were determined. Calculated g-tensor values showed best agreement with experimental values from EPR when carried out using both the B3LYP and B3PW91 functional.
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Affiliation(s)
- Ahmed M Mansour
- Chemistry Department, Faculty of Science, Cairo University, Gamaa Street, Giza 12613, Egypt.
| | - Ola R Shehab
- Chemistry Department, Faculty of Science, Cairo University, Gamaa Street, Giza 12613, Egypt
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13
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Li M, Kong LL, Gou Y, Yang F, Liang H. DNA binding, cytotoxicity and apoptosis induction activity of a mixed-ligand copper(II) complex with taurine Schiff base and imidazole. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 128:686-693. [PMID: 24699287 DOI: 10.1016/j.saa.2014.02.197] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 02/26/2014] [Accepted: 02/27/2014] [Indexed: 06/03/2023]
Abstract
A novel binuclear copper(II) complex (complex 1) with taurine Schiff base and imidazole has been synthesized and structurally characterized by single crystal X-ray diffraction, elemental analysis, ESI-MS spectrometry, UV-vis and IR spectroscopy. Single-crystal analysis revealed that 1 displays the sulfonate-bridged dinuclear copper(II) centers. Both copper atoms are five-coordinated and exhibit slightly distorted square pyramidal geometries. Each of copper atom is surrounded by three oxygen atoms and one nitrogen atom from different taurine Schiff base ligands, and one nitrogen atom from one imidazole ligand. The interaction between 1 and calf thymus DNA (CT-DNA) was investigated by UV-vis, fluorescence, circular dichroism (CD) spectra and agarose gel electrophoresis. The experimental results indicated that 1 could bind to CT-DNA via an intercalative mode and show efficient cleavage activity. In addition, 1 showed an antitumor effect on cell cycle and apoptosis. Flow cytometric analysis revealed that MGC-803 cells were arrested in the S phase after treatment with 1. Fluorescence microscopic observation indicated that 1 could induce apoptosis of MGC-803 cells.
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Affiliation(s)
- Mei Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, China; State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, Guangxi Normal University, Guilin, Guangxi, China
| | - Lin Lin Kong
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, Guangxi Normal University, Guilin, Guangxi, China
| | - Yi Gou
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, Guangxi Normal University, Guilin, Guangxi, China
| | - Feng Yang
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, Guangxi Normal University, Guilin, Guangxi, China
| | - Hong Liang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, China; State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, Guangxi Normal University, Guilin, Guangxi, China.
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14
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Mansour AM. Selective coordination ability of sulfamethazine Schiff-base ligand towards copper(II): molecular structures, spectral and SAR study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 123:257-266. [PMID: 24398469 DOI: 10.1016/j.saa.2013.12.066] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 11/28/2013] [Accepted: 12/08/2013] [Indexed: 06/03/2023]
Abstract
In the present work, a combined experimental and theoretical study of the N-(4,6-Dimethyl-pyrimidin-2-yl)-4-[(2-hydroxy-benzylidene)amino]benzenesulfonamide ligand (H2L) and its mononuclear and magnetically diluted binuclear Cu(II) complexes has been performed using IR, TG/DTA, magnetic, EPR, and conductivity measurements. Calculated g-tensor values showed best agreement with experimental values from EPR when carried out using the MPW1PW91 functional. Coordination of H2L to a Cu(II) center, regardless of the binding site and Cu:L stoichiometry, leads to a significant decrease in the antibacterial activity compared to the free ligand as well as reference drugs in the case of Staphylococcus aureus. Structural-activity relationship suggests that ELUMO, ΔE, dipole moment, polarizability and electrophilicity index were the most significant descriptors for the correlation with the antibacterial activity.
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Affiliation(s)
- Ahmed M Mansour
- Chemistry Department, Faculty of Science, Cairo University, Gamaa Street, Giza 12613, Egypt.
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15
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Caglar S, Adiguzel E, Sariboga B, Temel E, Buyukgungor O. Mono and dinuclear copper(II) naproxenato complexes containing 3-picoline and 4-picoline: synthesis, structure, properties, catechol oxidase, and antimicrobial activities. J COORD CHEM 2014. [DOI: 10.1080/00958972.2014.891198] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Sema Caglar
- Faculty of Arts and Sciences, Department of Chemistry, Erzincan University, Erzincan, Turkey
| | - Ekrem Adiguzel
- Faculty of Arts and Sciences, Department of Chemistry, Erzincan University, Erzincan, Turkey
| | | | - Ersin Temel
- Faculty of Arts and Sciences, Department of Physics, Ondokuz Mayis University, Samsun, Turkey
| | - Orhan Buyukgungor
- Faculty of Arts and Sciences, Department of Physics, Ondokuz Mayis University, Samsun, Turkey
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16
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Meghdadi S, Amirnasr M, Azarkamanzad Z, Schenk Joß K, Fadaee F, Amiri A, Abbasi S. Benign synthesis of the unsymmetrical ligand N-(quinolin-8-yl)pyrazine-2-carboxamide. Preparation, electrochemistry, antibacterial activity, and crystal structures of Cu(II) and Zn(II) complexes. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.867024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Soraia Meghdadi
- Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
| | - Mehdi Amirnasr
- Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
| | - Zahra Azarkamanzad
- Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
| | - Kurt Schenk Joß
- CCC-IPSB, École Polytechnique Fédérale de Lausanne, BSP Dorigny, Lausanne, Switzerland
| | - Farzaneh Fadaee
- Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
- CCC-IPSB, École Polytechnique Fédérale de Lausanne, BSP Dorigny, Lausanne, Switzerland
| | - Ahmad Amiri
- Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, Tehran, Iran
| | - Soheila Abbasi
- Department of Biological Sciences, University of Isfahan, Isfahan, Iran
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17
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Mansour AM. What happens when (1H-benzimidazol-2-ylmethyl)-N-phenyl amine is added to copper(II) acetate? Spectroscopic, magnetic, and DFT studies. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.08.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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