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Singh HL, Khaturia S, Solaki VS, Sharma N. Synthesis of coordination compounds of dibutyltin(IV) with Schiff bases having nitrogen donor atoms. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2023.100945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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2
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Maikoo S, Xulu B, Mambanda A, Mkhwanazi N, Davison C, de la Mare J, Booysen IN. Biomolecular Interactions of Cytotoxic Ruthenium Compounds with Thiosemicarbazone or Benzothiazole Schiff Base Chelates. ChemMedChem 2022; 17:e202200444. [PMID: 36041073 PMCID: PMC9826503 DOI: 10.1002/cmdc.202200444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/30/2022] [Indexed: 01/11/2023]
Abstract
Herein we illustrate the formation and characterization of new paramagnetic ruthenium compounds, trans-P-[RuCl(PPh3 )2 (pmt)]Cl (1) (Hpmt=1-((pyridin-2-yl)methylene)thiosemicarbazide), trans-P-[RuCl(PPh3 )2 (tmc)]Cl (2) (Htmc=1-((thiophen-2-yl)methylene)thiosemicarbazide) and a diamagnetic ruthenium complex, cis-Cl, trans-P-[RuCl2 (PPh3 )2 (btm)] (3) (btm=2-((5-hydroxypentylimino)methyl)benzothiazole). Agarose gel electrophoresis experiments of the metal compounds illustrated dose-dependent binding to gDNA by 1-3, while methylene blue competition assays suggested that 1 and 2 are also DNA intercalators. Assessment of the effects of the compounds on topoisomerase function indicated that 1-3 are capable of inhibiting topoisomerase I activity in terms of the ability to nick supercoiled plasmid DNA. The cytotoxic activities of the metal complexes were determined against a range of cancer cell lines versus a non-tumorigenic control cell line, and the complexes were, in general, more cytotoxic towards the cancer cells, displaying IC50 values in the low micromolar range. Time-dependent stability studies showed that in the presence of strong nucleophilic species (such as DMSO), the chloride co-ligands of 1-3 are rapidly substituted by the former as proven by the suppression of the substitution reactions in the presence of an excess amount of chloride ions. The metal complexes are significantly stable in both DCM and an aqueous phosphate buffer containing 2 % DMSO.
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Affiliation(s)
- Sanam Maikoo
- School of Chemistry and PhysicsUniversity of KwaZulu-NatalPietermaritzburgSouth Africa
| | - Bheki Xulu
- School of Chemistry and PhysicsUniversity of KwaZulu-NatalPietermaritzburgSouth Africa
| | - Allen Mambanda
- School of Chemistry and PhysicsUniversity of KwaZulu-NatalPietermaritzburgSouth Africa
| | - Ntando Mkhwanazi
- Centre for Chemico and Biomedicinal ResearchDepartment of Biochemistry and MicrobiologyFaculty of ScienceRhodes UniversityPO Box 94Grahamstown6140South Africa
| | - Candace Davison
- Centre for Chemico and Biomedicinal ResearchDepartment of Biochemistry and MicrobiologyFaculty of ScienceRhodes UniversityPO Box 94Grahamstown6140South Africa
| | - Jo‐Anne de la Mare
- Centre for Chemico and Biomedicinal ResearchDepartment of Biochemistry and MicrobiologyFaculty of ScienceRhodes UniversityPO Box 94Grahamstown6140South Africa
| | - Irvin Noel Booysen
- School of Chemistry and PhysicsUniversity of KwaZulu-NatalPietermaritzburgSouth Africa
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3
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Newly synthesized lanthanides complexes of ferrocene-based Schiff base with high biological activities and improved molecular docking data. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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4
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Hrioua A, Loudiki A, Farahi A, Laghrib F, Bakasse M, Lahrich S, Saqrane S, El Mhammedi MA. Complexation of amoxicillin by transition metals: Physico-chemical and antibacterial activity evaluation. Bioelectrochemistry 2021; 142:107936. [PMID: 34474204 DOI: 10.1016/j.bioelechem.2021.107936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 08/15/2021] [Accepted: 08/17/2021] [Indexed: 10/20/2022]
Abstract
Some bacteria have developed resistance to antibiotics that were once commonly used to treat them. Moreover, this resistance has become more and more massive and worrying. During this work, we succeeded in synthesizing "metal-antibiotic" complexes, combining as a ligand for the metals of Cu (II), Zn (II) and Fe (III). These complexes AMX - M (M = Cu, Fe and Zn) were characterized by UV-Vis spectrophotometry, IR spectroscopy, and electrochemical methods. Job's method of continuous variation suggested 1:1 metals to ligand stoichiometry for all amoxicillin complexes. The binding constant/association constant (K) of the AMX with Zn(II), Cu(II), and Fe(III) were found to be 4.46 × 104, 7.17 × 102 and 7.65 × 102 L mol-1, respectively. The IR spectra shows that the ligands coordinated to the metal ions through amino, imino, carboxylate, β-lactamic and carbonyl groups. The electrochemical results proved that amoxicillin oxidation process can be delayed by transition metal complexation. After, the complex synthesis, the antibacterial activity of ligand and its metal complexes were evaluated against Escherichia. coli bacteria by antibiogram method. The results show that the metal-amoxicillin complexes have better antibacterial activity against Escherichia coli (E. coli) than the free ligand (amoxicillin) due to the AMX protection against oxidation after complexation.
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Affiliation(s)
- A Hrioua
- Sultan Moulay Slimane University of Beni Mellal, Laboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty, 25 000 Khouribga, Morocco
| | - A Loudiki
- Sultan Moulay Slimane University of Beni Mellal, Laboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty, 25 000 Khouribga, Morocco; Chouaib Doukkali University, Faculty of Sciences, Laboratory of Organic Bioorganic Chemistry and Environment, El Jadida, Morocco
| | - A Farahi
- Sultan Moulay Slimane University of Beni Mellal, Laboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty, 25 000 Khouribga, Morocco
| | - F Laghrib
- Sultan Moulay Slimane University of Beni Mellal, Laboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty, 25 000 Khouribga, Morocco; Sidi Mohamed Ben Abdellah University, City of Innovation, Immouzer Road, B. P 2626 Fez, Morocco; Sidi Mohamed Ben Abdellah University, Engineering Laboratory of Organometallic, Molecular Materials, and Environment, Faculty of Sciences, Fez, Morocco
| | - M Bakasse
- Chouaib Doukkali University, Faculty of Sciences, Laboratory of Organic Bioorganic Chemistry and Environment, El Jadida, Morocco
| | - S Lahrich
- Sultan Moulay Slimane University of Beni Mellal, Laboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty, 25 000 Khouribga, Morocco
| | - S Saqrane
- Sultan Moulay Slimane University of Beni Mellal, Laboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty, 25 000 Khouribga, Morocco
| | - M A El Mhammedi
- Sultan Moulay Slimane University of Beni Mellal, Laboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty, 25 000 Khouribga, Morocco.
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Hemmati S, Hekmati M, Salamat D, Yousefi M, Karmakar B, Veisi H. Anchoring Mn(IV) in multi pyridine modified mesoporous silica SBA-15: An efficient nanocatalyst for selective oxidation of sulfides to sulfoxides. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114359] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Glavaš-Obrovac L, Jukić M, Mišković K, Marković I, Saftić D, Ban Ž, Matić J, Žinić B. Antiproliferative and proapoptotic activity of molecular copper(II) complex of N-1-tosylcytosine. J Trace Elem Med Biol 2019; 55:216-222. [PMID: 29066001 DOI: 10.1016/j.jtemb.2017.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 03/25/2017] [Accepted: 10/17/2017] [Indexed: 11/23/2022]
Abstract
In an attempt to enhance the previously observed antiproliferative capacity of 1-(p-toluenesulfonyl)cytosine (N-1-tosylcytosine, ligand 1), its copper(II) complex (Cu(1-TsC-N3)2Cl2, complex 2) was prepared and tested in vitro on various carcinoma and leukemia cells. The comparative in vitro studies using the ligand 1, the complex 2, CuCl2x2H2O salt (salt 3) and the 1:2 mixture of the salt 3 and ligand 1 (mixture 4) were performed on normal (WI38), human carcinoma (HeLa, CaCo2, MiaPaCa2, SW620), lymphoma (Raji) and leukemia (K562) cell lines. Significantly elevated concentration of the intracellular copper after treatment of K562 cells and HeLa cells during 2h with complex 2 (7.83 vs. 5.4 times) was detected by atomic absorption spectroscopy. Cytotoxicity was analyzed by MTT assay. We found that antiproliferative capacity of the tested compounds varies (IC50 after 72h of exposure: 0.6×10-6M to>100×10-6M). Leukemia and lymphoma cells were found the most sensitive to complex 2 which showed more than 100 times higher in vitro activity against K562 cells than ligand 1. Apoptotic morphological changes, an externalization of phosphatydilserine, and changes in the mitochondrial membrane potential of treated cells were found. The caspase-3 activity in HeLa and K562 cells was measured by caspase-3 colorimetric assay kit. Caspase-3 was not activated in the treated K562 cells while salt 3 and the mixture 4 in the HeLa cells significantly increased tested enzyme activity. These findings suggest that copper(II) in the molecular complex 2 by improving entry of the N-1-tosylcytosine 1 into cells increases its antiproliferative capacity. In summary, the present study demonstrated that complex 2 possesses an antileukemic effect on K562 cells, and its anticancer activity was attributed with induction of apoptosis. The exact mechanism of apoptosis induction by complex 2 must be further investigated.
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Affiliation(s)
- Ljubica Glavaš-Obrovac
- Department of Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Huttlerova 4, HR-31000 Osijek, Croatia.
| | - Marijana Jukić
- Department of Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Huttlerova 4, HR-31000 Osijek, Croatia.
| | - Katarina Mišković
- Department of Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Huttlerova 4, HR-31000 Osijek, Croatia.
| | - Ivana Marković
- Department of Clinical Laboratory Diagnostics, Clinical Hospital Centre Osijek, Huttlerova 4, HR-31000 Osijek, Croatia.
| | - Dijana Saftić
- Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000 Zagreb, Croatia.
| | - Željka Ban
- Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000 Zagreb, Croatia.
| | - Josipa Matić
- Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000 Zagreb, Croatia.
| | - Biserka Žinić
- Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000 Zagreb, Croatia.
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Zaltariov MF, Avadanei M, Balan M, Peptanariu D, Vornicu N, Shova S. Synthesis, structural characterization and biological studies of new Schiff bases containing trimethylsilyl groups. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.08.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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8
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Kobetić R, Ključarić V, Saftić D, Matić J, Ban Ž, Kazazić S, Žinić B. The transformation from 2°-amine to 3°-amine of cyclam ring alters the fragmentation patterns of 1-tosylcytosine-cyclam conjugates. JOURNAL OF MASS SPECTROMETRY : JMS 2018; 53:655-664. [PMID: 29739033 DOI: 10.1002/jms.4197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 04/06/2018] [Accepted: 04/23/2018] [Indexed: 06/08/2023]
Abstract
The novel N-1-sulfonylcytosine-cyclam conjugates 1 and 2 conjugates are ionized by electrospray ionization mass spectrometry (ESI MS) in positive and negative modes (ES+ and ES- ) as singly protonated/deprotonated species or as singly or doubly charged metal complexes. Their structure and fragmentation behavior is examined by collision induced experiments. It was observed that the structure of the conjugate dictated the mode of the ionization: 1 was analyzed in ES- mode while 2 in positive mode. Complexation with metal ions did not have the influence on the ionization mode. Zn2+ and Cu2+ complexes with ligand 1 followed the similar fragmentation pattern in negative ionization mode. The transformation from 2°-amine in 1 to 3°-amine of cyclam ring in 2 leads to the different fragmentation patterns due to the modification of the protonation priority which changed the fragmentation channels within the conjugate itself. Cu2+ ions formed complexes practically immediately, and the priority had the cyclam portion of the ligand 2. The structure of the formed Zn2+ complexes with ligand 2 depended on the number of 3° amines within the cyclam portion of the conjugate and the ratio of the metal:ligand used. The cleavage of the cyclam ring of metal complexes is driven by the formation of the fragment that suited the coordinating demand of the metal ions and the collision energy applied. Finally, it was shown that the structure of the cyclam conjugate dictates the fragmentation reactions and not the metal ions.
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Affiliation(s)
- Renata Kobetić
- Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000, Zagreb, Croatia
| | - Valentina Ključarić
- Ministry of Defense of the Republic of Croatia, Dr. Franjo Tuđman Croatian Defense Academy, Ilica 256 b, Zagreb, Croatia
| | - Dijana Saftić
- Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000, Zagreb, Croatia
| | - Josipa Matić
- Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000, Zagreb, Croatia
| | - Željka Ban
- Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000, Zagreb, Croatia
| | - Snježana Kazazić
- Laboratory for Mass Spectrometry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000, Zagreb, Croatia
| | - Biserka Žinić
- Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000, Zagreb, Croatia
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9
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El-Attar MS. Spectroscopic, thermal analysis, and nematicidal evaluation of new mixed ligand complexes of bidentate Schiff base and 1,10 phenanthroline with some transition metals. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Mohamed S. El-Attar
- Chemistry Department, Faculty of Science; Zagazig University; Zagazig Egypt
- Chemistry Department, Faculty of Science; Jazan University; Jazan Saudi Arabia
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10
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Soltan Y, Hashem N, Morsy A, El-Azrak K, El-Din AN, Sallam S. Comparative effects of Moringa oleifera root bark and monensin supplementations on ruminal fermentation, nutrient digestibility and growth performance of growing lambs. Anim Feed Sci Technol 2018. [DOI: 10.1016/j.anifeedsci.2017.11.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Mn-Schiff base complex supported on magnetic nanoparticles: Synthesis, crystal structure, electrochemical properties and catalytic activities for oxidation of olefins and sulfides. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.05.049] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Devi J, Devi S, Kumar A. Synthesis, spectral, and in vitro antimicrobial studies of organosilicon(IV) complexes with Schiff bases derived from dehydroacetic acid. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1720-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Mapara N, Sharma M, Shriram V, Bharadwaj R, Mohite KC, Kumar V. Antimicrobial potentials of Helicteres isora silver nanoparticles against extensively drug-resistant (XDR) clinical isolates of Pseudomonas aeruginosa. Appl Microbiol Biotechnol 2015; 99:10655-67. [PMID: 26362684 DOI: 10.1007/s00253-015-6938-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 08/06/2015] [Accepted: 08/11/2015] [Indexed: 11/24/2022]
Abstract
Pseudomonas aeruginosa is a leading opportunistic pathogen and its expanding drug resistance is a growing menace to public health. Its ubiquitous nature and multiple resistance mechanisms make it a difficult target for antimicrobial chemotherapy and require a fresh approach for developing new antimicrobial agents against it. The broad-spectrum antibacterial effects of silver nanoparticles (SNPs) make them an excellent candidate for use in the medical field. However, attempts made to check their potency against extensively drug-resistant (XDR) microbes are meager. This study describes the biosynthesis and biostabilization of SNPs by Helicteres isora aqueous fruit extract and their characterization by ultraviolet-visible spectroscopy, transmission electron microscopy, dynamic light scattering, X-ray diffraction, and Fourier transform infrared spectroscopy. Majority of SNPs synthesized were of 8--20-nm size. SNPs exhibited dose-dependent antibacterial activities against four XDR P. aeruginosa (XDR-PA) clinical isolates as revealed by growth curves, with a minimum inhibitory concentration of 300 μg/ml. The SNPs exhibited antimicrobial activity against all strains, with maximum zone of inhibition (16.4 mm) in XRD-PA-2 at 1000 μg/ml. Amongst four strains, their susceptibilities to SNPs were in the following order: XDR-PA-2 > XDR-PA-4 > XDR-PA-3 > XDR-PA-1. The exposure of bacterial cells to 300 μg/ml SNPs resulted into a substantial leakage of reducing sugars and proteins, inactivation of respiratory chain dehydrogenases, and eventual cell death. SNPs also induced lipid peroxidation, a possible underlying factor to membrane porosity. The effects were more pronounced in XDR-PA-2 which may be correlated with its higher susceptibility to SNPs. These results are indicative of SNP-induced turbulence of membranous permeability as an important causal factor in XDR-PA growth inhibition and death.
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Affiliation(s)
- Nikunj Mapara
- Department of Biotechnology, Modern College of Arts, Science and Commerce, S. P. Pune University, Ganeshkhind, Pune, 411 016, India
| | - Mansi Sharma
- Department of Biotechnology, Modern College of Arts, Science and Commerce, S. P. Pune University, Ganeshkhind, Pune, 411 016, India
| | - Varsha Shriram
- Department of Botany, Prof. Ramkrishna More Arts, Commerce and Science College, S. P. Pune University, Akurdi, Pune, 411044, India
| | - Renu Bharadwaj
- Department of Microbiology, B. J. Government Medical College, Pune, 411001, India
| | - K C Mohite
- School of Energy Studies, Department of Physics, Savitribai Phule Pune University, Ganeshkhind, Pune, 411007, India
| | - Vinay Kumar
- Department of Biotechnology, Modern College of Arts, Science and Commerce, S. P. Pune University, Ganeshkhind, Pune, 411 016, India.
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El-Baradie KY, El-Wakiel NA, El-Ghamry HA. Synthesis, characterization and corrosion inhibition in acid medium ofl-histidine Schiff base complexes. Appl Organomet Chem 2014. [DOI: 10.1002/aoc.3255] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | - Hoda A. El-Ghamry
- Chemistry Department, Faculty of Science; Tanta University; Tanta Egypt
- Chemistry Department, Faculty of Applied Science; Umm Al-Qura University; Kingdom of Saudi Arabia
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