1
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Johnson JE, Present TM, Valentine JS. Iron: Life's primeval transition metal. Proc Natl Acad Sci U S A 2024; 121:e2318692121. [PMID: 39250667 DOI: 10.1073/pnas.2318692121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/11/2024] Open
Abstract
Modern life requires many different metal ions, which enable diverse biochemical functions. It is commonly assumed that metal ions' environmental availabilities controlled the evolution of early life. We argue that evolution can only explore the chemistry that life encounters, and fortuitous chemical interactions between metal ions and biological compounds can only be selected for if they first occur sufficiently frequently. We calculated maximal transition metal ion concentrations in the ancient ocean, determining that the amounts of biologically important transition metal ions were orders of magnitude lower than ferrous iron. Under such conditions, primitive bioligands would predominantly interact with Fe(II). While interactions with other metals in certain environments may have provided evolutionary opportunities, the biochemical capacities of Fe(II), Fe-S clusters, or the plentiful magnesium and calcium could have satisfied all functions needed by early life. Primitive organisms could have used Fe(II) exclusively for their transition metal ion requirements.
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Affiliation(s)
- Jena E Johnson
- Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109
| | - Theodore M Present
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125
| | - Joan Selverstone Valentine
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
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2
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Ozawa H, Miyazawa T, Burdeos GC, Miyazawa T. Biological Functions of Antioxidant Dipeptides. J Nutr Sci Vitaminol (Tokyo) 2022; 68:162-171. [PMID: 35768247 DOI: 10.3177/jnsv.68.162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In the history of modern nutritional science, understanding antioxidants is one of the major topics. In many cases, food-derived antioxidants have π conjugate or thiol group in their molecular structures because π conjugate stabilizes radical by its delocalization and two thiol groups form a disulfide bond in its antioxidative process. In recent years, antioxidant peptides have received much attention because for their ability to scavenge free radicals, inhibition of lipid peroxidation, chelation of transition metal ions, as well as their additional nutritional value. Among them, dipeptides are attracting much interest as post-amino acids, which have residues in common with amino acids, but also have different physiological properties and functions from those of amino acids. Especially, dipeptides containing moieties of several amino acid (tryptophan, tyrosine, histidine, cysteine, and methionine) possess potent antioxidant activity. This review summarizes previous details of structural property, radical scavenging activity, and biological activity of antioxidant dipeptide. Hopefully, this review will help provide a new insight into the study of the biological functions of antioxidant dipeptides.
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Affiliation(s)
- Hitoshi Ozawa
- New Industry Creation Hatchery Center (NICHe), Tohoku University
| | - Taiki Miyazawa
- New Industry Creation Hatchery Center (NICHe), Tohoku University
| | | | - Teruo Miyazawa
- New Industry Creation Hatchery Center (NICHe), Tohoku University
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3
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On-Line Thermally Induced Evolved Gas Analysis: An Update-Part 1: EGA-MS. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113518. [PMID: 35684458 PMCID: PMC9182359 DOI: 10.3390/molecules27113518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/27/2022] [Accepted: 05/28/2022] [Indexed: 11/16/2022]
Abstract
Advances in on-line thermally induced evolved gas analysis (OLTI-EGA) have been systematically reported by our group to update their applications in several different fields and to provide useful starting references. The importance of an accurate interpretation of the thermally-induced reaction mechanism which involves the formation of gaseous species is necessary to obtain the characterization of the evolved products. In this review, applications of Evolved Gas Analysis (EGA) performed by on-line coupling heating devices to mass spectrometry (EGA-MS), are reported. Reported references clearly demonstrate that the characterization of the nature of volatile products released by a substance subjected to a controlled temperature program allows us to prove a supposed reaction or composition, either under isothermal or under heating conditions. Selected 2019, 2020, and 2021 references are collected and briefly described in this review.
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Application of Innovative TGA/Chemometric Approach for Forensic Purposes: The Estimation of the Time since Death in Contaminated Specimens. Diagnostics (Basel) 2021; 11:diagnostics11010121. [PMID: 33466645 PMCID: PMC7828662 DOI: 10.3390/diagnostics11010121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 01/09/2021] [Accepted: 01/10/2021] [Indexed: 11/16/2022] Open
Abstract
Chronothanatology has always been a challenge in forensic sciences. Therefore, the importance of a multidisciplinary approach for the characterization of matrices (organs, tissues, or fluids) that respond linearly to the postmortem interval (PMI) is emerging increasingly. The vitreous humor is particularly suitable for studies aimed at assessing time-related modifications because it is topographically isolated and well-protected. In this work, a novel approach based on thermogravimetry and chemometrics was used to estimate the time since death in the vitreous humor and to collect a databank of samples derived from postmortem examinations after medico–legal evaluation. In this study, contaminated and uncontaminated specimens with tissue fragments were included in order to develop a classification model to predict time of death based on partial least squares discriminant analysis (PLS-DA) that was as robust as possible. Results demonstrate the possibility to correctly predict the PMI even in contaminated samples, with an accuracy not lower than 70%. In addition, the correlation coefficient of the measured versus predicted outcomes was found to be 0.9978, confirming the ability of the model to extend its feasibility even to such situations involving contaminated vitreous humor.
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Risoluti R, Gullifa G, Materazi S. Assessing the Quality of Milk Using a Multicomponent Analytical Platform MicroNIR/Chemometric. Front Chem 2020; 8:614718. [PMID: 33335892 PMCID: PMC7736405 DOI: 10.3389/fchem.2020.614718] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 10/27/2020] [Indexed: 01/03/2023] Open
Abstract
In this work, an innovative screening platform based on MicroNIR and chemometrics is proposed for the on-site and contactless monitoring of the quality of milk using simultaneous multicomponent analysis. The novelty of this completely automated tool consists of a miniaturized NIR spectrometer operating in a wireless mode that allows samples to be processed in a rapid and accurate way and to obtain in a single click a comprehensive characterization of the chemical composition of milk. To optimize the platform, milk specimens with different origins and compositions were considered and prediction models were developed by chemometric analysis of the NIR spectra using Partial Least Square regression algorithms. Once calibrated, the platform was used to predict samples acquired in the market and validation was performed by comparing results of the novel platform with those obtained from the chromatographic analysis. Results demonstrated the ability of the platform to differentiate milk as a function of the distribution of fatty acids, providing a rapid and non-destructive method to assess the quality of milk and to avoid food adulteration.
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Affiliation(s)
- Roberta Risoluti
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
| | | | - Stefano Materazi
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
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Risoluti R, Gullifa G, Battistini A, Materazzi S. Development of a "single-click" analytical platform for the detection of cannabinoids in hemp seed oil. RSC Adv 2020; 10:43394-43399. [PMID: 35519692 PMCID: PMC9058129 DOI: 10.1039/d0ra07142k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/22/2020] [Indexed: 12/12/2022] Open
Abstract
In this work, an innovative screening platform is developed and validated for the on site detection of cannabinoids in hemp seed oil, for food safety control of commercial products. The novelty of this completely automated tool consists of a miniaturized NIR spectrometer operating in a wireless mode that permits processing samples in a rapid and accurate way and to obtain in a single click the early detection of a residual amount of cannabinoids in oil, including cannabidiol (CBD), the psychoactive Δ9-tetrahydrocannabinol (THC) and the Δ9-tetrahydrocannabinolic acid (THCA). Simulated samples were realized to instruct the platform and prediction models were developed by chemometric analysis of the NIR spectra using partial least square regression algorithms. Once calibrated, the platform was used to predict samples acquired in the market and on websites. Validation of the system was achieved by comparing results with those obtained from GC-MS analyses and a good correlation was observed.
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Affiliation(s)
- Roberta Risoluti
- Department of Chemistry, Sapienza University of Rome p.le A. Moro 5 00185 Rome Italy +390649387137 +390649913616
| | - Giuseppina Gullifa
- Department of Chemistry, Sapienza University of Rome p.le A. Moro 5 00185 Rome Italy +390649387137 +390649913616
| | - Alfredo Battistini
- Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Centro di Politiche e Bioeconomia via Pò 14 00198 Italy
| | - Stefano Materazzi
- Department of Chemistry, Sapienza University of Rome p.le A. Moro 5 00185 Rome Italy +390649387137 +390649913616
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7
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Chillè D, Cassone G, Giacobello F, Giuffrè O, Nardo VM, Ponterio RC, Saija F, Sponer J, Trusso S, Foti C. Removal of As(III) from Biological Fluids: Mono- versus Dithiolic Ligands. Chem Res Toxicol 2020; 33:967-974. [PMID: 32180400 PMCID: PMC7997625 DOI: 10.1021/acs.chemrestox.9b00506] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
![]()
Arsenic is one of
the inorganic pollutants typically found in natural
waters, and its toxic effects on the human body are currently of great
concern. For this reason, the search for detoxifying agents that can
be used in a so-called “chelation therapy” is of primary
importance. However, to the aim of finding the thermodynamic behavior
of efficient chelating agents, extensive speciation studies, capable
of reproducing physiological conditions in terms of pH, temperature,
and ionic strength, are in order. Here, we report on the acid–base
properties of meso-2,3-dimercaptosuccinic acid
(DMSA) at different temperatures (i.e., T = 288.15,
298.15, 310.15, and 318.15 K). In particular, its capability to interact
with As(III) has been investigated by experimentally evaluating some
crucial thermodynamic parameters (ΔH and TΔS), stability constants, and its
speciation model. Additionally, in order to gather information on
the microscopic coordination modalities of As(III) with the functional
groups of DMSA and, at the same time, to better interpret the experimental
results, a series of state-of-the-art ab initio molecular
dynamics simulations have been performed. For the sake of completeness,
the sequestering capabilities of DMSA—a simple dithiol ligand—toward
As(III) are directly compared with those recently emerged from similar
analyses reported on monothiol ligands.
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Affiliation(s)
- Donatella Chillè
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Giuseppe Cassone
- CNR-IPCF, Viale Ferdinando Stagno d'Alcontres 37, 98158 Messina, Italy
| | - Fausta Giacobello
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Ottavia Giuffrè
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Viviana Mollica Nardo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Rosina C Ponterio
- CNR-IPCF, Viale Ferdinando Stagno d'Alcontres 37, 98158 Messina, Italy
| | - Franz Saija
- CNR-IPCF, Viale Ferdinando Stagno d'Alcontres 37, 98158 Messina, Italy
| | - Jiri Sponer
- Institute of Biophysics of the Czech Academy of Sciences, Kràlovopolskà 135, 61265 Brno, Czech Republic
| | - Sebastiano Trusso
- CNR-IPCF, Viale Ferdinando Stagno d'Alcontres 37, 98158 Messina, Italy
| | - Claudia Foti
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
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8
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Chillè D, Foti C, Giuffrè O. Thermodynamic parameters for the protonation and the interaction of arsenate with Mg 2+, Ca 2+ and Sr 2+: Application to natural waters. CHEMOSPHERE 2018; 190:72-79. [PMID: 28985538 DOI: 10.1016/j.chemosphere.2017.09.115] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 09/15/2017] [Accepted: 09/25/2017] [Indexed: 06/07/2023]
Abstract
Thermodynamic parameters for the protonation of AsO43- and for the interaction with Mg2+, Ca2+ and Sr2+ were reported, comprehensive also of their dependence on ionic strength, considering the 0.1 ≤ I ≤ 1 M range and using NaCl as background salt. The same speciation models were obtained for Mg2+, Ca2+ and Sr2+ systems, with the formation of three different species: ML, MLH and MLH2 (L = AsO43-). Mono- and di-protonated species were very weak, with formation constant values (log K) ranging from 1.45 to 3.23. In order to have a complete picture of thermodynamic properties of the systems under study and to fill the shortage of thermodynamic data on arsenate complex systems, the ligand protonation and metal complex enthalpies were also determined by calorimetric titrations, at t = 25 °C and in NaCl at I = 0.7 M (for H+-AsO43- species also at I = 0.1 M). On the light of the proposed speciation models, examples of As(V) distribution in some natural waters are reported.
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Affiliation(s)
- Donatella Chillè
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, 98166 Messina, Italy
| | - Claudia Foti
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, 98166 Messina, Italy.
| | - Ottavia Giuffrè
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, 98166 Messina, Italy
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9
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Inoue K, Aikawa S, Fukushima Y. Colorimetric chemosensor based on a carminic acid and Pb2+ complex for selective detection of cysteine over homocysteine and glutathione in aqueous solution. J INCL PHENOM MACRO 2017. [DOI: 10.1007/s10847-017-0772-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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10
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Cardiano P, Giacobello F, Giuffrè O, Sammartano S. Thermodynamic and spectroscopic study of Al 3+ interaction with glycine, l -cysteine and tranexamic acid in aqueous solution. Biophys Chem 2017; 230:10-19. [DOI: 10.1016/j.bpc.2017.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/07/2017] [Accepted: 08/07/2017] [Indexed: 01/05/2023]
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11
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Zhang X, Qin B, Deng J, Wells M. Whole-cell bioreporters and risk assessment of environmental pollution: A proof-of-concept study using lead. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 229:902-910. [PMID: 28779895 DOI: 10.1016/j.envpol.2017.07.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/02/2017] [Accepted: 07/21/2017] [Indexed: 06/07/2023]
Abstract
As the world burden of environmental contamination increases, it is of the utmost importance to develop streamlined approaches to environmental risk assessment in order to prioritize mitigation measures. Whole-cell biosensors or bioreporters and speciation modeling have both become of increasing interest to determine the bioavailability of pollutants, as bioavailability is increasingly in use as an indicator of risk. Herein, we examine whether bioreporter results are able to reflect expectations based on chemical reactivity and speciation modeling, with the hope to extend the research into a wider framework of risk assessment. We study a specific test case concerning the bioavailability of lead (Pb) in aqueous environments containing Pb-complexing ligands. Ligands studied include ethylene diamine tetra-acetic acid (EDTA), meso-2,3 dimercaptosuccinic acid (DMSA), leucine, methionine, cysteine, glutathione, and humic acid (HA), and we also performed experiments using natural water samples from Lake Tai (Taihu), the third largest lake in China. We find that EDTA, DMSA, cysteine, glutathione, and HA amendment significantly reduced Pb bioavailability with increasing ligand concentration according to a log-sigmoid trend. Increasing dissolved organic carbon in Taihu water also had the same effect, whereas leucine and methionine had no notable effect on bioavailability at the concentrations tested. We find that bioreporter results are in accord with the reduction of aqueous Pb2+ that we expect from the relative complexation affinities of the different ligands tested. For EDTA and HA, for which reasonably accurate ionization and complexation constants are known, speciation modeling is in agreement with bioreporter response to within the level of uncertainty recognised as reasonable by the United States Environmental Protection Agency for speciation-based risk assessment applications. These findings represent a first step toward using bioreporter technology to streamline the biological confirmation or validation of speciation modeling for use in environmental risk assessment.
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Affiliation(s)
- Xiaokai Zhang
- Department of Environmental Science, Xi'an Jiaotong-Liverpool University, Suzhou, Jiangsu 215123, People's Republic of China; Department of Environmental Science, University of Liverpool, Brownlow Hill, Liverpool L69 7ZX, United Kingdom
| | - Boqiang Qin
- Taihu Laboratory for Lake Ecosystem Research, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China
| | - Jianming Deng
- Taihu Laboratory for Lake Ecosystem Research, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China
| | - Mona Wells
- Department of Environmental Science, Xi'an Jiaotong-Liverpool University, Suzhou, Jiangsu 215123, People's Republic of China; Department of Environmental Science, University of Liverpool, Brownlow Hill, Liverpool L69 7ZX, United Kingdom.
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12
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Ngamchuea K, Batchelor-McAuley C, Sokolov SV, Compton RG. Dynamics of Silver Nanoparticles in Aqueous Solution in the Presence of Metal Ions. Anal Chem 2017; 89:10208-10215. [DOI: 10.1021/acs.analchem.7b01470] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Kamonwad Ngamchuea
- Physical & Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Christopher Batchelor-McAuley
- Physical & Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Stanislav V. Sokolov
- Physical & Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Richard G. Compton
- Physical & Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
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13
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Furia E. Study of Complexation Equilibria Between the Iron(III) Ion and 2-Hydroxybenzamide in Aqueous Solution. J SOLUTION CHEM 2017. [DOI: 10.1007/s10953-017-0665-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Cardiano P, Foti C, Giuffrè O. Removal of di- and tri-alkyltin(IV) compounds by polyphosphonate ligand: A speciation perspective. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.067] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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15
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Cardiano P, Crea F, Foti C, Giuffrè O, Sammartano S. Potentiometric, UV and 1H NMR study on the interaction of Cu 2+ with ampicillin and amoxicillin in aqueous solution. Biophys Chem 2017; 224:59-66. [PMID: 28410941 DOI: 10.1016/j.bpc.2017.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 03/27/2017] [Accepted: 04/03/2017] [Indexed: 12/13/2022]
Abstract
A potentiometric, UV and 1H NMR study on Cu2+-ampicillin [(2S,5R,6R)-6-([(2R)-2-amino-2-phenylacetyl]amino)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid] and -amoxicillin [(2S,5R,6R)-6-{[(2R)-2-amino-2-(4-hydroxyphenyl)-acetyl]amino}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-24-carboxylic acid] systems in NaCl aqueous solution at I=0.15molL-1 and t=25°C is reported. On the basis of potentiometric results two speciation models were proposed for each system. It was found that spectrophotometric and 1H NMR measurements are essential for selecting the most reliable speciation models. They included ML, MLOH and ML(OH)2 species in both systems and, only for Cu2+-ampicillin, also MLH species. The stability constants obtained by UV and 1H NMR titrations were comparable to the ones calculated by potentiometry. The sequestering ability of the ligands under study towards Cu2+ by pL0.5 empiric parameter (ligand concentration required to sequester 50% of the metal cation present in traces) at several pH values was calculated as well. For ampicillin and amoxicillin, pL0.5=7.19 and 6.67, respectively, at physiological pH, I=0.15molL-1 and t=25°C were obtained.
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Affiliation(s)
- Paola Cardiano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Francesco Crea
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Claudia Foti
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Ottavia Giuffrè
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy.
| | - Silvio Sammartano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy
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17
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Papalia T, Barattucci A, Barreca D, Bellocco E, Bonaccorsi P, Minuti L, Nicolò MS, Temperini A, Foti C. Sequestering ability to Cu2+ of a new bodipy-based dye and its behavior as in vitro fluorescent sensor. J Inorg Biochem 2017; 167:116-123. [DOI: 10.1016/j.jinorgbio.2016.11.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 11/23/2016] [Accepted: 11/30/2016] [Indexed: 12/28/2022]
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18
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Potentiometric, UV and 1H NMR study on the interaction of penicillin derivatives with Zn(II) in aqueous solution. Biophys Chem 2017; 223:1-10. [PMID: 28183008 DOI: 10.1016/j.bpc.2017.01.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 01/09/2017] [Accepted: 01/24/2017] [Indexed: 01/17/2023]
Abstract
The interaction of Zn(II) with ampicillin [(2S,5R,6R)-6-([(2R)-2-amino-2-phenylacetyl]amino)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2- carboxylic acid] and amoxicillin [(2S,5R,6R)-6-{[(2R)-2-amino-2-(4-hydroxyphenyl)-acetyl]amino}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-24-carboxylic acid] in NaCl aqueous solution at different ionic strengths and at t=25°C was investigated by potentiometric, UV and 1H NMR techniques. Fairly similar speciation models were obtained for the two systems. At I=0.15molL-1, two different sets of measurements, at low and high concentrations, were carried out. For the Zn2+-amoxicillin system, the Zn2L2(OH)2 species was obtained in the set of measurements at high concentration. The spectrophotometric and 1H NMR results thus obtained are fully consistent with the speciation models found from potentiometric investigations, confirming the formation as well as the relative stability of the complex species. The dependence of the stability constants on the ionic strength was modeled by means of the Debye-Hückel and SIT (Specific ion Interaction Theory) approaches, and the parameter that accounts for the variation of the stability constants with the ionic strength and the specific ion interaction parameters were determined for all the ionic species. The sequestering ability of the ligands towards Zn2+ was evaluated by determining the pL0.5 parameter at different ionic strengths. It resulted that the sequestering ability of ampicillin is higher of ~0.5 order of magnitude with respect to amoxicillin.
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Cardiano P, Foti C, Giuffrè O. On the interaction of N -acetylcysteine with Pb 2+ , Zn 2+ , Cd 2+ and Hg 2+. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.08.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Cardiano P, Giacobello F, Giuffrè O, Sammartano S. Thermodynamics of Al3+-thiocarboxylate interaction in aqueous solution. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.077] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Risoluti R, Gullifa G, Fabiano MA, Materazzi S. Biomimetic complexes of Co(II), Mn(II), and Ni(II) with 2-propyl-4,5-imidazoledicarboxylic acid. EGA–MS characterization of the thermally induced decomposition. RUSS J GEN CHEM+ 2015. [DOI: 10.1134/s1070363215100242] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Bretti C, Cigala RM, Crea F, De Stefano C, Lando G, Sammartano S. Thermodynamics of Zn2+ 2-mercaptopyridine-N-oxide and 2-hydroxypyridine-N-oxide interactions: Stability, solubility, activity coefficients and medium effects. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.08.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jalilehvand F, Sisombath NS, Schell AC, Facey GA. Lead(II) complex formation with L-cysteine in aqueous solution. Inorg Chem 2015; 54:2160-70. [PMID: 25695880 DOI: 10.1021/ic5025668] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The lead(II) complexes formed with the multidentate chelator L-cysteine (H2Cys) in an alkaline aqueous solution were studied using (207)Pb, (13)C, and (1)H NMR, Pb LIII-edge X-ray absorption, and UV-vis spectroscopic techniques, complemented by electrospray ion mass spectrometry (ESI-MS). The H2Cys/Pb(II) mole ratios were varied from 2.1 to 10.0 for two sets of solutions with CPb(II) = 0.01 and 0.1 M, respectively, prepared at pH values (9.1-10.4) for which precipitates of lead(II) cysteine dissolved. At low H2Cys/Pb(II) mole ratios (2.1-3.0), a mixture of the dithiolate [Pb(S,N-Cys)2](2-) and [Pb(S,N,O-Cys)(S-HCys)](-) complexes with average Pb-(N/O) and Pb-S distances of 2.42 ± 0.04 and 2.64 ± 0.04 Å, respectively, was found to dominate. At high concentration of free cysteinate (>0.7 M), a significant amount converts to the trithiolate [Pb(S,N-Cys)(S-HCys)2](2-), including a minor amount of a PbS3-coordinated [Pb(S-HCys)3](-) complex. The coordination mode was evaluated by fitting linear combinations of EXAFS oscillations to the experimental spectra and by examining the (207)Pb NMR signals in the chemical shift range δPb = 2006-2507 ppm, which became increasingly deshielded with increasing free cysteinate concentration. One-pulse magic-angle-spinning (MAS) (207)Pb NMR spectra of crystalline Pb(aet)2 (Haet = 2-aminoethanethiol or cysteamine) with PbS2N2 coordination were measured for comparison (δiso = 2105 ppm). The UV-vis spectra displayed absorption maxima at 298-300 nm (S(-) → Pb(II) charge transfer) for the dithiolate PbS2N(N/O) species; with increasing ligand excess, a shoulder appeared at ∼330 nm for the trithiolate PbS3N and PbS3 (minor) complexes. The results provide spectroscopic fingerprints for structural models for lead(II) coordination modes to proteins and enzymes.
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Affiliation(s)
- Farideh Jalilehvand
- Department of Chemistry, University of Calgary , 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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Sisombath NS, Jalilehvand F, Schell AC, Wu Q. Lead(II) binding to the chelating agent D-penicillamine in aqueous solution. Inorg Chem 2014; 53:12459-68. [PMID: 25385465 PMCID: PMC4250370 DOI: 10.1021/ic5018714] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Indexed: 11/28/2022]
Abstract
A spectroscopic investigation of the complexes formed between the Pb(II) ion and D-penicillamine (H2Pen), a chelating agent used in the treatment of lead poisoning, was carried out on two sets of alkaline aqueous solutions with CPb(II) ≈ 10 and 100 mM, varying the H2Pen/Pb(II) molar ratio (2.0, 3.0, 4.0, 10.0). Ultraviolet-visible (UV-vis) spectra of the 10 mM Pb(II) solutions consistently showed an absorption peak at 298 nm for S(-) → Pb(II) ligand-to-metal charge-transfer. The downfield (13)C NMR chemical shift for the penicillamine COO(-) group confirmed Pb(II) coordination. The (207)Pb NMR chemical shifts were confined to a narrow range between 1806 ppm and 1873 ppm for all Pb(II)-penicillamine solutions, indicating only small variations in the speciation, even in large penicillamine excess. Those chemical shifts are considerably deshielded, relative to the solid-state (207)Pb NMR isotropic chemical shift of 909 ppm obtained for crystalline penicillaminatolead(II) with Pb(S,N,O-Pen) coordination. The Pb LIII-edge extended X-ray absorption fine structure (EXAFS) spectra obtained for these solutions were well-modeled with two Pb-S and two Pb-(N/O) bonds with mean distances 2.64 ± 0.04 Å and 2.45 ± 0.04 Å, respectively. The combined spectroscopic results, reporting δ((207)Pb) ≈ 1870 ppm and λmax ≈ 298 nm for a Pb(II)S2NO site, are consistent with a dominating 1:2 lead(II):penicillamine complex with [Pb(S,N,O-Pen)(S-HnPen)](2-n) (n = 0-1) coordination in alkaline solutions, and provide useful structural information on how penicillamine can function as an antidote against lead toxicity in vivo.
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Affiliation(s)
- Natalie S. Sisombath
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Farideh Jalilehvand
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Adam C. Schell
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Qiao Wu
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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