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Chérif I, Gassoumi B, Ayachi H, Echabaane M, Caccamo MT, Magazù S, Said AH, Taoufik B, Ayachi S. A theoretical and electrochemical impedance spectroscopy study of the adsorption and sensing of selected metal ions by 4-morpholino-7-nitrobenzofuran. Heliyon 2024; 10:e26709. [PMID: 38439845 PMCID: PMC10909671 DOI: 10.1016/j.heliyon.2024.e26709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/06/2024] Open
Abstract
The selectivity of a novel chemosensor, based on a modified nitrobenzofurazan referred to as NBD-Morph, has been investigated for the detection of heavy metal cations (Co2+, Pb2+, Mg2+, Ag+, Cu2+, Hg2+, Ni2+, and Zn2+). The ligand, 4-morpholino-7-nitrobenzofurazan (NBD-Morph), was characterized using spectroscopic techniques including FT-IR and 1H NMR. Vibrational frequencies obtained from FT-IR and proton NMR (1H) chemical shifts were accurately predicted employing the density functional theory (DFT) at the B3LYP level of theory. Furthermore, an examination of the structural, electronic, and quantum chemical properties was conducted and discussed. DFT calculations were employed to explore the complex formation ability of the NBD-Morph ligand with Co2+, Pb2+, Mg2+, Ag+, Cu2+, Hg2+, Ni2+, and Zn2+ metal cations. The comparison of adsorption energies for all possible conformations reveals that NBD-Morph exhibits sensitivity and selectivity towards metal ions, including Pb2+, Cu2+, Ag+, and Ni2+. However, an assessment of their reactivity using QTAIM topological parameters demonstrated the ligand's greater complexation ability toward Cu2+ or Ni2+ than those formed by Pb2+ or Ag+. Additionally, molecular electrostatic potential (MEP), Hirshfeld surfaces, and their associated 2D-fingerprint plots were applied to a detailed study of the inter-molecular interactions in NBD-Morph-X (X = Pb2+, Cu2+, Ag+, Ni2+) complexes. The electron localization function (ELF) and the localized-orbital locator (LOL) were generated to investigate the charge transfer and donor-acceptor interactions within the complexes. Electrochemical analysis further corroborates the theoretical findings, supporting the prediction of NBD-Morph's sensory ability towards Ni2+ metal cations. In conclusion, NBD-Morph stands out as a promising sensor for Ni2+.
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Affiliation(s)
- Imen Chérif
- Laboratory of Physico-Chemistry of Materials (LR01ES19), Faculty of Sciences, Avenue of the Environment 5019 Monastir, University of Monastir, Tunisia
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno D'Alcontres No. 31, S. Agata, 98166, Messina, Italy
| | - Bouzid Gassoumi
- Laboratoire Interfaces et Matériaux Avancés (LIMA), Faculté des Sciences, Université de Monastir, Avenue de l’Environnement, 5019, Monastir, Tunisia
| | - Hajer Ayachi
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (LR11ES39), Faculté des Sciences, Université de Monastir, Avenue de l’Environnement, 5019, Monastir, Tunisia
| | - Mosaab Echabaane
- CRMN, Centre de Recherche en Microélectronique et Nanotechnologie de Sousse, Nanomisene, LR16CRMN01, 4054, Sousse, Tunisie
| | - Maria Teresa Caccamo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno D'Alcontres No. 31, S. Agata, 98166, Messina, Italy
| | - Salvatore Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno D'Alcontres No. 31, S. Agata, 98166, Messina, Italy
| | - Ayoub Haj Said
- Laboratoire Interfaces et Matériaux Avancés (LIMA), Faculté des Sciences, Université de Monastir, Avenue de l’Environnement, 5019, Monastir, Tunisia
| | - Boubaker Taoufik
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (LR11ES39), Faculté des Sciences, Université de Monastir, Avenue de l’Environnement, 5019, Monastir, Tunisia
| | - Sahbi Ayachi
- Laboratory of Physico-Chemistry of Materials (LR01ES19), Faculty of Sciences, Avenue of the Environment 5019 Monastir, University of Monastir, Tunisia
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Caccamo MT, Magazù S. Exponential feedback effects in a parametric resonance climate model. Sci Rep 2023; 13:22984. [PMID: 38151497 PMCID: PMC10752910 DOI: 10.1038/s41598-023-50350-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 12/19/2023] [Indexed: 12/29/2023] Open
Abstract
The variations in the distribution of solar radiation due to the ~ 105 years Milankovitch cycle, which is connected to the Earth eccentricity variation, cannot explain the sharp drop in temperature of 6 °C ÷ 10 °C that marks the transition from the interglacial to the glacial age registered in the last ~ 5.5 106 years temperature variation behavior. More specifically, neglecting other effects, only a temperature variation of 0.2 °C ÷ 0.3 °C can be attributed to this cycle and, therefore, positive feedback effects should be taken into account to explain the registered effect. In the present work, a comparative Wavelet-Fourier analysis of the Vostok recontructed temperature record, for which different sampling steps are taken into account, is performed. Then, a study of exponential feedback effects within a climate parametric resonance model is dealt and discussed. The obtained findings put into evidence an exponential amplification of the temperature variation from the interglacial to the glacial age supporting the hypothesis that the system energization be connected to periodic variations in the internal solar system parameters. More in details, it is shown that, following the parametric resonance climate model, even small oscillations increase over time proportionally to the system energy itself, i.e. exponentially, and hence, a series of connected resonances is able to energize the climate system.
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Affiliation(s)
- Maria Teresa Caccamo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno D'Alcontres n°31, S. Agata, 98166, Messina, Italy
- Consorzio Interuniversitario Scienze Fisiche Applicate (CISFA), Viale Ferdinando Stagno D'Alcontres n°31, S. Agata, 98166, Messina, Italy
| | - Salvatore Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno D'Alcontres n°31, S. Agata, 98166, Messina, Italy.
- Consorzio Interuniversitario Scienze Fisiche Applicate (CISFA), Viale Ferdinando Stagno D'Alcontres n°31, S. Agata, 98166, Messina, Italy.
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Zammuto V, Rizzo MG, De Pasquale C, Ferlazzo G, Caccamo MT, Magazù S, Guglielmino SPP, Gugliandolo C. Lichenysin-like Polypeptide Production by Bacillus licheniformis B3-15 and Its Antiadhesive and Antibiofilm Properties. Microorganisms 2023; 11:1842. [PMID: 37513014 PMCID: PMC10384595 DOI: 10.3390/microorganisms11071842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/14/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
We report the ability of the crude biosurfactant (BS B3-15), produced by the marine, thermotolerant Bacillus licheniformis B3-15, to hinder the adhesion and biofilm formation of Pseudomonas aeruginosa ATCC 27853 and Staphylococcus aureus ATCC 29213 to polystyrene and human cells. First, we attempted to increase the BS yield, optimizing the culture conditions, and evaluated the surface-active properties of cell-free supernatants. Under phosphate deprivation (0.06 mM) and 5% saccharose, the yield of BS (1.5 g/L) increased by 37%, which could be explained by the earlier (12 h) increase in lchAA expression compared to the non-optimized condition (48 h). Without exerting any anti-bacterial activity, BS (300 µg/mL) prevented the adhesion of P. aeruginosa and S. aureus to polystyrene (47% and 36%, respectively) and disrupted the preformed biofilms, being more efficient against S. aureus (47%) than P. aeruginosa (26%). When added to human cells, the BS reduced the adhesion of P. aeruginosa and S. aureus (10× and 100,000× CFU/mL, respectively) without altering the epithelial cells' viability. As it is not cytotoxic, BS B3-15 could be useful to prevent or remove bacterial biofilms in several medical and non-medical applications.
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Affiliation(s)
- Vincenzo Zammuto
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
- Research Centre for Extreme Environments and Extremophiles, Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
- ATHENA Green Solutions S.r.l., Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Maria Giovanna Rizzo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Claudia De Pasquale
- Laboratory of Immunology and Biotherapy, Department of Human Pathology, Via Consolare Valeria, 1, 98124 Messina, Italy
| | - Guido Ferlazzo
- Department of Experimental Medicine (DIMES), University of Genoa, 16132 Genova, Italy
- Unit of Experimental Pathology and Immunology, IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Maria Teresa Caccamo
- Research Centre for Extreme Environments and Extremophiles, Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
- Department of Mathematical and Computer Sciences, Physical Sciences and Earth Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Salvatore Magazù
- Research Centre for Extreme Environments and Extremophiles, Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
- ATHENA Green Solutions S.r.l., Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
- Department of Mathematical and Computer Sciences, Physical Sciences and Earth Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Salvatore Pietro Paolo Guglielmino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Concetta Gugliandolo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
- Research Centre for Extreme Environments and Extremophiles, Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
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Caccamo MT, Magazù S. Investigation of Glucose-Water Mixtures as a Function of Concentration and Temperature by Infrared Spectroscopy. Int J Mol Sci 2023; 24:ijms24032564. [PMID: 36768887 PMCID: PMC9917217 DOI: 10.3390/ijms24032564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 01/31/2023] Open
Abstract
The main aim of the present paper is to characterize the hydration properties of glucose and the hydrogen bond network in glucose-water mixtures. For these purposes, temperature scans on ten concentration values of glucose-water mixtures were performed by means of Fourier Transform InfraRed (FTIR) spectroscopy. More specifically, in order to get this information an analysis of the intramolecular OH stretching mode, investigating the 3000-3700 cm-1 spectral range, was performed by means of an innovative approach based on the evaluation of the Spectral Distance (SD). The adopted procedure allows evaluating the glucose hydration number as well as characterizing the temperature behavior of the hydrogen bond network in the glucose-water mixtures. The obtained results for the hydration number are in excellent agreement with literature data and suggest the existence of a particular concentration value for which the hydrogen bond network shows a maximum strength.
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Affiliation(s)
- Maria Teresa Caccamo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale F.S. D’Alcontres, 31, 98166 Messina, Italy
- Consorzio Interuniversitario Scienze Fisiche Applicate (CISFA), Viale F.S. D’Alcontres, 31, 98166 Messina, Italy
- Correspondence:
| | - Salvatore Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale F.S. D’Alcontres, 31, 98166 Messina, Italy
- Consorzio Interuniversitario Scienze Fisiche Applicate (CISFA), Viale F.S. D’Alcontres, 31, 98166 Messina, Italy
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Caccamo MT, Magazù S. Multiscale Spectral Analysis on Lysozyme Aqueous Solutions in the Presence of PolyEthyleneGlycol. Molecules 2022; 27:molecules27248760. [PMID: 36557893 PMCID: PMC9781088 DOI: 10.3390/molecules27248760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
Infrared spectroscopy measurements were performed on Lysozyme aqueous solutions also in the presence of PolyEthylene Glycol (PEG 400) as a function of an increasing temperature from T = 27 °C to 90 °C, and, successively in sequence, by decreasing temperatures from T = 90 °C to 27 °C. Data were analyzed by evaluating the spectral difference with respect to the initial spectrum collected at 27 °C. This procedure allows to quantitatively evaluate the thermal restraint related to the thermal scan from T = 27 °C to 90 °C, as well as to introduce a spectral resilience concerning the entire increasing and decreasing thermal paths which allow to highlight the bioprotectant effectiveness of low molecular weight PEG. In particular, the main purpose of the present work is to highlight the effects of a thermal treatment on a mixture of Lysozyme/water and of Lysozyme/water/PEG 400 during an increasing temperature scan, and then after a successive decreasing temperature scan, in order to highlight the bioprotectant role of PEG 400. On that score, an evaluation of the spectral distances of the registered spectra as a function of increasing and decreasing temperatures has been performed and analyzed.
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Affiliation(s)
- Maria Teresa Caccamo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze Della Terra, Università degli Studi di Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
- Consorzio Interuniversitario Scienze Fisiche Applicate (CISFA), Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Correspondence: (M.T.C.); (S.M.)
| | - Salvatore Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze Della Terra, Università degli Studi di Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
- Consorzio Interuniversitario Scienze Fisiche Applicate (CISFA), Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Correspondence: (M.T.C.); (S.M.)
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Caccamo MT, Zammuto V, Spanò A, Gugliandolo C, Magazù S. Hydrating Capabilities of the Biopolymers Produced by the Marine Thermophilic Bacillus horneckiae SBP3 as Evaluated by ATR-FTIR Spectroscopy. Materials (Basel) 2022; 15:5988. [PMID: 36079369 PMCID: PMC9457388 DOI: 10.3390/ma15175988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
The surfactin-like lipopeptide (BS-SBP3) and the exopolysaccharide (EPS-SBP3) produced by the polyextremophilic Bacillus horneckiae SBP3 (DSM 103063) have been recently described as valuable biopolymers useful in biotechnological applications. To investigate the hydrating capabilities of BS-SBP3 and EPS-SBP3, here we evaluated (i) their wetting properties, measuring the contact angle; (ii) their moisture uptake abilities using the gravimetric method; and (iii) their hydrating states (from 0 to 160% w/w of water content) using ATR-FTIR spectroscopy. BS-SBP3 reduced the water contact angle on a hydrophobic surface from 81.7° to 51.3°, whereas the contact angle in the presence of EPS-SBP3 was 72.9°, indicating that BS-SBP3 improved the wettability of the hydrophobic surface. In the moisture uptake tests, EPS-SBP3 absorbed more water than BS-SBP3, increasing its weight from 10 mg to 30.1 mg after 36 h of 100% humidity exposure. Spectral distance and cross-correlation analyses were used to evaluate the molecular changes of the two biopolymers during the hydration process. As the water concentration increased, BS-SBP3 spectra changed in intensity in the two contributions of the OH-stretching band named "closed" and "open" (3247 and 3336 cm-1, respectively). Differently, the spectra of EPS-SBP3 exhibited a broader peak (3257 cm-1), which shifted at higher water concentrations. As evaluated by the spectral distance and the wavelet cross-correlation analysis, the OH-stretching bands of the BS-SBP3 and EPS-SBP3 changed as a function of water content, with two different sigmoidal trends having the inflection points at 80% and 48%, respectively, indicating peculiar water-properties of each biopolymer. As wetting agents, these biopolymers might replace industrially manufactured additives in agriculture and the food and cosmetic industries.
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Affiliation(s)
- Maria Teresa Caccamo
- Department of Mathematical and Computer Sciences, Physical Sciences and Earth Sciences, University of Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Vincenzo Zammuto
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
- Research Centre for Extreme Environments and Extremophiles, University of Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Antonio Spanò
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
- Research Centre for Extreme Environments and Extremophiles, University of Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Concetta Gugliandolo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
- Research Centre for Extreme Environments and Extremophiles, University of Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Salvatore Magazù
- Department of Mathematical and Computer Sciences, Physical Sciences and Earth Sciences, University of Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
- Research Centre for Extreme Environments and Extremophiles, University of Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
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Caccamo MT, Magazù S. An FT-IR Based Investigation of Trehalose Mediated Thermal Stabilisation of Bacillus clausii. CNF 2021. [DOI: 10.2174/1573401317666210210130042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Fourier Transform InfraRed spectroscopy analysis on Bacillus clausii and Bacillus clausii in the presence of trehalose are reported.
Objective:
In order to characterize the thermal response of such systems the InfraRed technique
was employed to collect the spectra from 25.0°C to 80.0°C in the 4000 cm-1-400 cm-1 spectral
range.
Methods:
The data analysis was performed focusing the attention to the intramolecular OH
stretching vibrational region by means evaluating the spectral distance as a function of
temperature.
Results:
From this analysis it emerges that the thermal restraint of Bacillus clausii in the presence
of trehalose is higher in respect to Bacillus clausii alone.
Conclusion:
Such a result, which confirms the bioprotective role of trehalose against external
temperature changes, provides useful information for the applications of the disaccharide in food
industry.
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Affiliation(s)
- Maria T. Caccamo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno D'Alcontres no. 31, S. Agata, 98166, Messina, Italy
| | - Salvatore Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno D'Alcontres no. 31, S. Agata, 98166, Messina, Italy
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Romano D, Caridi F, Di Bella M, Italiano F, Magazù S, Caccamo MT, Tripodo A, Faggio G, Grillo R, Triolo C, Messina G, Gattuso A, Sabatino G. Natural Radioactivity of the Crystalline Basement Rocks of the Peloritani Mountains (North-Eastern Sicily, Italy): Measurements and Radiological Hazard. Radiat Prot Dosimetry 2020; 191:ncaa178. [PMID: 33207370 DOI: 10.1093/rpd/ncaa178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
Crystalline rocks can produce dangerous radiation levels on the basis of their content in radioisotopes. Here, we report radiological data from 10 metamorphic and igneous rock samples collected from the crystalline basement of the Peloritani Mountains (southern Italy). In order to evaluate the radiological properties of these rocks, the gamma radiation and the radon emanation have been measured. Moreover, since some of these rocks are employed as building materials, we assess the potential hazard for population connected to their use. Gamma spectroscopy was used to measure the 226Ra, 232Th and 40K activity concentration, whereas the radon emanation was investigated by using a RAD 7 detector. The results show 226Ra, 232Th and 40K activity concentration values ranging from (17 ± 4) to (56 ± 8) Bq kg-1, (14 ± 3) to (77 ± 14) Bq kg-1 and (167 ± 84) to (1760 ± 242) Bq kg-1, respectively. Values of the annual effective dose equivalent outdoor range from 0.035 to 0.152 mSv y-1, whereas the gamma index is in the range of 0.22-0.98. The 222Rn emanation coefficient and the 222Rn surface exhalation rate vary from (0.63 ± 0.3) to (8.27 ± 1.6)% and from (0.12 ± 0.03) to (2.75 ± 0.17) Bq m-2 h-1, respectively. The indoor radon derived from the building use of these rocks induces an approximate contribution to the annual effective dose ranging from 8 to 176 μSv y-1. All the obtained results suggest that the crystalline rocks from the Peloritani Mountains are not harmful for the residential population, even though they induce annual effective doses due to terrestrial gamma radiation above the worldwide average values. Moreover, their use as building materials does not produce significant health hazards connected to the indoor radon exposure.
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Affiliation(s)
- D Romano
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra (MIFT), Università di Messina, 98166 Messina, Italy
- Istituto Nazionale di Geofisica e Vulcanologia, 90146 Palermo, Italy
| | - F Caridi
- Dipartimento di Reggio Calabria, Agenzia Regionale per la protezione dell'Ambiente della Calabria, Italy (ARPACal), Via Troncovito SNC, 89135 Reggio Calabria, Italy
| | - M Di Bella
- Istituto Nazionale di Geofisica e Vulcanologia, 90146 Palermo, Italy
| | - F Italiano
- Istituto Nazionale di Geofisica e Vulcanologia, 90146 Palermo, Italy
| | - S Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra (MIFT), Università di Messina, 98166 Messina, Italy
| | - M T Caccamo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra (MIFT), Università di Messina, 98166 Messina, Italy
| | - A Tripodo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra (MIFT), Università di Messina, 98166 Messina, Italy
| | - G Faggio
- Dipartimento di Ingegneria dell'Informazione, delle Infrastrutture e dell'Energia Sostenibile (DIIES), Università "Mediterranea", 89122 Reggio Calabria, Italy
| | - R Grillo
- Dipartimento di Ingegneria dell'Informazione, delle Infrastrutture e dell'Energia Sostenibile (DIIES), Università "Mediterranea", 89122 Reggio Calabria, Italy
| | - C Triolo
- Dipartimento di Ingegneria Civile, dell'Energia, dell'Ambiente e dei Materiali (DICEAM), Università "Mediterranea", 89122 Reggio Calabria, Italy
| | - G Messina
- Dipartimento di Ingegneria dell'Informazione, delle Infrastrutture e dell'Energia Sostenibile (DIIES), Università "Mediterranea", 89122 Reggio Calabria, Italy
| | - A Gattuso
- Istituto Nazionale di Geofisica e Vulcanologia, 90146 Palermo, Italy
| | - G Sabatino
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra (MIFT), Università di Messina, 98166 Messina, Italy
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Calabrò E, Magazù S. Modulation of Maillard reaction and protein aggregation in bovine meat following exposure to microwave heating and possible impact on digestive processes: An FTIR spectroscopy study. Electromagn Biol Med 2020; 39:129-138. [PMID: 32142387 DOI: 10.1080/15368378.2020.1737805] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The aim of this study was to highlight the existence of a correlation between Maillard reaction and protein aggregation in bovine meat as a function of power level and exposure time used by microwave heating. The obtained results are compared with those of convective heating. For this, Fourier Transform-Infrared Spectroscopy was used to analyze the effects of microwave heating on different samples of bovine meat cooked in microwave ovens at three power levels of 700, 900 and 1100 W, and in conventional electric oven at the temperature of 170°C. An increase in intensity of methylene vibration bands after microwave cooking at 700 W for 3 min was more than that which occurred after microwave cooking at 900 and 1100 W for 2 min, showing that Maillard reaction depends on exposure time to microwaves. Also, the β-sheet contents at 1695 and 1635 cm-1 in meat samples heated for 2 min by microwave oven increased with increase in power level from 700 to 1100 W, showing that protein aggregation is strictly related to the power level of microwave heating. This result showed that an extended exposure time to microwave heating can significantly alter gastrointestinal digestive processes.
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Affiliation(s)
- Emanuele Calabrò
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Messina, Italy.,CISFA - Interuniversity Consortium of Applied Physical Sciences (Consorzio Interuniversitario di Scienze Fisiche Applicate), Biophysics laboratory, Messina, Italy
| | - Salvatore Magazù
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Messina, Italy.,CISFA - Interuniversity Consortium of Applied Physical Sciences (Consorzio Interuniversitario di Scienze Fisiche Applicate), Biophysics laboratory, Messina, Italy.,Le Studium, Loire Valley Institute for Advanced Studies, Orléans & Tours, France.,Centre de Biophysique Moleculaire (CBM)-CNRS UPR 4301 Du CNRS, Orleans, France.,Laboratoire Interfaces, Confinement, Matériaux Et Nanostructures (ICMN) - UMR 7374 CNRS, Université d'Orléans, Orléans, France.,INDAM - Gruppo Nazionale per la Fisica Matematica- GNFM, Istituto Nazionale di Alta Matematica "F. Severi", Rome, Italy
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10
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Calabrò E, Goswami HK, Magazù S. Chromosome aberration in typical biological systems under exposure to low- and high-intensity magnetic fields. Electromagn Biol Med 2020; 39:97-108. [PMID: 32138556 DOI: 10.1080/15368378.2020.1737812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The aim of this study was to investigate the response of chromosomes in typical human and plant cells under applied low-frequency magnetic fields at low and high intensities. Neuronal-like cells and roots of Allium sativum and Vicia faba were used to investigate chromosome's response to a static and 50 Hz magnetic fields at intensities ranging from 1 mT to 0.8 T, generated by two Helmholtz coils driven by direct current or alternate current voltage. Vertex spectrometer and Olympus microscope with camera were used. A significant decrease in intensity of the phosphate bands in the DNA infrared region was observed by FTIR spectroscopy analysis after exposure of neuronal-like cells to static and 50 Hz magnetic field at low intensity of 1 mT, which can be explained assuming that uncoiling and unpackaging of chromatin constituents occurred after exposure. This effect was directly observed by microscope in roots of Allium sativum and Vicia faba under exposure to a static magnetic field at high intensity of 0.8 T. These findings can be explained assuming that exposure to both low- and high-intensity magnetic fields of chromosomes in typical human and plant cells induces uncoiling and unpackaging of chromatin constituents, followed by chromosome alignment towards the direction of applied magnetic field, providing further demonstration that magnetic fields can induce the orientation of organic macromolecules even at low-intensity values.
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Affiliation(s)
- Emanuele Calabrò
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences, University of Messina, Messina, Italy.,CISFA, Interuniversity Consortium of Applied Physical Sciences, Messina, Italy
| | - Hit Kishore Goswami
- Retired Professor of Genetics, Barkatullah University Bhopal (MP), Bhopal, India
| | - Salvatore Magazù
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences, University of Messina, Messina, Italy.,CISFA, Interuniversity Consortium of Applied Physical Sciences, Messina, Italy.,Le Studium, Loire Valley Institute for Advanced Studies, Orleans, France.,Centre de Biophysique Moleculaire (CBM), CNRS UPR 4301 du CNRS, Orleans, France.,UMR, Laboratoire Interfaces, Confinement, Mat_eriaux Et Nanostructures (ICMN) 7374 CNRS, Universitè d'Orleans, Orleans, France.,Istituto Nazionale Di Alta Matematica "F. Severi" - INDAM, Gruppo Nazionale per La Fisica Matematica - GNFM, Rome, Italy
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Calabrò E, Magazù S, Currò M, Ientile R. The inverse relation between mitochondrial transmembrane potential and proteins α-helix in neuronal-like cells under static magnetic field and the role of VDAC. Electromagn Biol Med 2020; 39:176-182. [PMID: 32149540 DOI: 10.1080/15368378.2020.1737808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
In this study, a correlation between cell channel α-helices displacement and the mitochondrial transmembrane potential after exposure of 3, 7, 15 and 24 h of neuronal-like cells to a uniform magnetic field at the intensity of 2 mT was shown. Fourier Transform Infrared (FTIR) Spectroscopy and fluorescence techniques were used to analyze the secondary structure of protein content and mitochondrial transmembrane potential, respectively. The main result of this study was represented by a significant inverse relation between the mitochondrial transmembrane potential and the intensity of the Amide I band that can be associated with time exposure. Given that mitochondrial transmembrane potential should be related to the gating state of voltage-dependent anion channel (VDAC) in mitochondrial membrane, this result could have a relevant role in medicine. Indeed, VDAC's irregular behavior can be associated with several varieties of mitochondria-associated pathologies and various forms of cancer and neurodegeneration.
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Affiliation(s)
- Emanuele Calabrò
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Messina, Italy
| | - Salvatore Magazù
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Messina, Italy.,Department of Biochemical and Dental Sciences and Morphological and Functional Image, University of Messina, Messina, Italy.,Le Studium, Loire Valley Institute for Advanced Studies, Orléans & Tours, France.,Centre de Biophysique Moleculaire (CBM), rue Charles Sandron, Laboratoire Interfaces, Confinement, Materiaux et Nanostructures (ICMN) - UMR 7374 CNRS, Université d'Orleans, Orleans, France.,INDAM - Gruppo Nazionale per la Fisica Matematica - GNFM, Istituto Nazionale di Alta Matematica "F. Severi, Rome, Italy
| | - Monica Currò
- Department of Biochemical and Dental Sciences and Morphological and Functional Image, University of Messina, Messina, Italy
| | - Riccardo Ientile
- Department of Biochemical and Dental Sciences and Morphological and Functional Image, University of Messina, Messina, Italy
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Magazù S, Lombardo D. Editorial-Special Issue "Macromolecular Self-Assembly Materials: From Modeling to Advanced Applications". Materials (Basel) 2020; 13:ma13061458. [PMID: 32210075 PMCID: PMC7143292 DOI: 10.3390/ma13061458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 12/30/2022]
Affiliation(s)
- Salvatore Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, 98166 Messina, Italy
- Correspondence: (S.M.); (D.L.)
| | - Domenico Lombardo
- Consiglio Nazionale delle Ricerche, Istituto per i Processi Chimico-Fisici, 98158 Messina, Italy
- Correspondence: (S.M.); (D.L.)
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Lombardo D, Calandra P, Pasqua L, Magazù S. Self-assembly of Organic Nanomaterials and Biomaterials: The Bottom-Up Approach for Functional Nanostructures Formation and Advanced Applications. Materials (Basel) 2020; 13:E1048. [PMID: 32110877 PMCID: PMC7084717 DOI: 10.3390/ma13051048] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 02/17/2020] [Accepted: 02/20/2020] [Indexed: 12/11/2022]
Abstract
In this paper, we survey recent advances in the self-assembly processes of novel functional platforms for nanomaterials and biomaterials applications. We provide an organized overview, by analyzing the main factors that influence the formation of organic nanostructured systems, while putting into evidence the main challenges, limitations and emerging approaches in the various fields of nanotechology and biotechnology. We outline how the building blocks properties, the mutual and cooperative interactions, as well as the initial spatial configuration (and environment conditions) play a fundamental role in the construction of efficient nanostructured materials with desired functional properties. The insertion of functional endgroups (such as polymers, peptides or DNA) within the nanostructured units has enormously increased the complexity of morphologies and functions that can be designed in the fabrication of bio-inspired materials capable of mimicking biological activity. However, unwanted or uncontrollable effects originating from unexpected thermodynamic perturbations or complex cooperative interactions interfere at the molecular level with the designed assembly process. Correction and harmonization of unwanted processes is one of the major challenges of the next decades and requires a deeper knowledge and understanding of the key factors that drive the formation of nanomaterials. Self-assembly of nanomaterials still remains a central topic of current research located at the interface between material science and engineering, biotechnology and nanomedicine, and it will continue to stimulate the renewed interest of biologist, physicists and materials engineers by combining the principles of molecular self-assembly with the concept of supramolecular chemistry.
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Affiliation(s)
- Domenico Lombardo
- Consiglio Nazionale delle Ricerche, Istituto per i Processi Chimico-Fisici, 98158 Messina, Italy
| | - Pietro Calandra
- Consiglio Nazionale delle Ricerche, Istituto Studio Materiali Nanostrutturati, 00015 Roma, Italy;
| | - Luigi Pasqua
- Department of Environmental and Chemical Engineering, University of Calabria, 87036 Rende, Italy;
| | - Salvatore Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, 98166 Messina, Italy;
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Caccamo MT, Mavilia G, Mavilia L, Calandra P, Lombardo D, Magazù S. RETRACTED: Thermal investigation of montmorillonite/BSA by Fourier Transform InfraRed Spectroscopy measurements. AIMSBPOA 2020. [DOI: 10.3934/biophy.2020019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
<abstract>
<p>This paper reports the analysis of the intramolecular OH stretching band obtained by Fourier Transform Infrared (FTIR) spectroscopy measurements. In order to characterize the effect of montmorillonite on the properties of Bovine Serum Albumin (BSA) the two-state model is adopted for the analysis of the OH stretching band. We assume that the OH stretching can be divided into two different states of inter-molecular bonding. The results of this experimental work confirm that the montmorillonite leads to a stabilization of the BSA structure. Also, the analysis of the spectra temperature dependence shows a montmorillonite-induced higher thermal stability of the BSA in respect to pristine BSA. Thus, this paper allows to highlight the importance of montmorillonite as thermal bio-protector: this is also evidenced by the theory widely discussed in the following introduction regarding the birth of the first life forms on earth in montmorillonite clay, in which the protective role of the montmorillonite interlayer space is also highlighted. A FTIR analysis was carried out to investigate the interaction of montmorillonite with BSA. Two different approaches, i.e. Spectral Distance and Wavelet analyses, constitute two effective and innovative approaches for the characterization of the thermal properties of pristine BSA and of BSA in the presence of montmorillonite. The results allowed us to consider as BSA in the presence of montmorillonite has a lower spectral sensitivity when the temperature changes and, therefore, the role of montmorillonite as a thermal bio-protector is motivated.</p>
</abstract>
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Caccamo MT, Mavilia G, Mavilia L, Calandra P, Lombardo D, Magazù S. Thermal investigation of montmorillonite/BSA by fourier transform infrared spectroscopy measurements 1. AIMSBPOA 2020. [DOI: 10.3934/biophy.2020030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
<abstract>
<p>This paper reports the analysis of the intramolecular OH stretching band obtained by Fourier Transform Infrared (FTIR) spectroscopy measurements. In order to characterize the effect of montmorillonite on the properties of Bovine Serum Albumin (BSA) the two-state model is adopted for the analysis of the OH stretching band. We assume that the OH stretching can be divided into two different states of inter-molecular bonding. The results of this experimental work confirm that the montmorillonite leads to a stabilization of the BSA structure. Also, the analysis of the spectra temperature dependence shows a montmorillonite-induced higher thermal stability of the BSA in respect to pristine BSA. Thus, this paper highlights the effectiveness of montmorillonite as thermal bio-protector. A FTIR analysis was carried out to investigate the interaction of Montmorillonite with BSA. Two different approaches, i.e. Spectral Distance and Wavelet analyses, constitute two effective and innovative approaches for the characterization of the thermal properties of pristine BSA and of BSA in the presence of Montmorillonite. The results allowed us to consider as BSA in the presence of Montmorillonite has a lower spectral sensitivity when the temperature changes and, therefore, the role of Montmorillonite as a thermal bio-protector is motivated.</p>
</abstract>
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Lombardo D, Calandra P, Teresa Caccamo M, Magazù S, Pasqua L, A. Kiselev M. Interdisciplinary approaches to the study of biological membranes. AIMS Biophysics 2020. [DOI: 10.3934/biophy.2020020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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17
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Magazù S, Caccamo M. Interdisciplinary experimental approaches for the investigation of complex systems of biophysical interest. AIMS Biophysics 2020. [DOI: 10.3934/biophy.2020009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Calabrò E, Magazù S. New Perspectives in the Treatment of Tumor Cells by Electromagnetic Radiation at Resonance Frequencies in Cellular Membrane Channels. ACTA ACUST UNITED AC 2019. [DOI: 10.2174/187407070190130105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background:
The use of electromagnetic fields has been considered as adjuvant therapy for the treatment of cancer given that some clinical trials have shown that the irradiation of cancer cells with electromagnetic fields can slow down the disease progression.
Aims:
We hypothesize that this effect could be amplified by irradiating tumor cells with electromagnetic fields having frequencies close to the natural resonant frequencies of membrane channels in tumor cells, in order to obtain a significant change of the ion flux across tumor cell membrane channels, inducing the largest harmful alteration in their cellular function.
Methods:
Neuronal-like cells were used as a cell model and exposed for 6 h to electromagnetic fields at different frequencies (0, 50 Hz, 900 MHz) at the same intensity of 2 mT. The exposure system was represented by two Helmholtz coils driven by a power amplifier in current mode and an arbitrary function generator. FTIR spectroscopy was used to evaluate the results of the exposure.
Results:
The results of this study showed that the Amide I vibration band increased in intensity with the increase of the frequency, leading us to assume that the displacement of the cell channels α-helices depends on the frequency of the applied electromagnetic fields.
Conclusion:
This preliminary result leads us to plan future research aimed at searching for the natural frequencies of membrane channels in tumor cells using resonant electromagnetic fields in order to damage the cellular functions of tumor cells. Clinical trials are needed to confirm such a hypothesis derived from this physical study.
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Calabrò E, Magazù S. Methyl and methylene vibrations response in amino acids of typical proteins in water solution under high-frequency electromagnetic field. Electromagn Biol Med 2019; 38:271-278. [DOI: 10.1080/15368378.2019.1641720] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Emanuele Calabrò
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Messina, Italy
- CISFA - Interuniversity Consortium of Applied Physical Sciences (Consorzio Interuniversitario di Scienze Fisiche Applicate), Biophysics laboratory, Messina, Italy
| | - Salvatore Magazù
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Messina, Italy
- CISFA - Interuniversity Consortium of Applied Physical Sciences (Consorzio Interuniversitario di Scienze Fisiche Applicate), Biophysics laboratory, Messina, Italy
- Le Studium, Loire Valley, Institute for Advanced Studies, University of Orléans, Orléans, France
- Centre de Biophysique Moleculaire (CBM), rue Charles Sandron, Laboratoire Interfaces, Confinement, Materiaux et Nanostructures (ICMN) - UMR 7374 CNRS, Université d'Orleans, Orleans, France
- INDAM - Gruppo Nazionale per la Fisica Matematica – GNFM, Istituto Nazionale di Alta Matematica “F. Severi”, Rome, Italy
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Mezei F, Caccamo MT, Migliardo F, Magazù S. Resolution-elastic neutron scattering by correlation techniques. J Adv Res 2019; 17:109-116. [PMID: 31193259 PMCID: PMC6526200 DOI: 10.1016/j.jare.2019.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 02/15/2019] [Accepted: 02/15/2019] [Indexed: 12/22/2022] Open
Abstract
Neutron scattering applications often require discriminating the elastic contribution from the inelastic contribution. For this purpose, correlation spectroscopy offers an effective tool with both pulsed and continuous neutron sources as well as several advantages: the analysis of the neutron velocity distribution can be carried out with a duty factor of 50%, independently on the resolution value; the best statistical accuracy for spectra where the elastic part encompasses most of the integrated intensity is provided. Depending on the statistical chopper position, correlation analysis can be used for both incoming and outgoing neutron velocity determination. Moreover, the correlation technique is very profitable for investigating weak signals in the presence of high background, which is often the case for small samples. To provide instrument flexibility and versatility, an innovative approach comprising tuning resolution by variable Resolution-Elastic Neutron Scattering (RENS) is proposed, offering further benefits by enabling systematic trading of intensity for resolution and vice versa. This study puts into evidence the advantages offered by the use of statistical chopper and of correlation technique for RENS in choosing the best compromise between resolution and beam intensity.
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Affiliation(s)
- F Mezei
- European Spallation Source ERIC, Lund, Sweden.,HAS Wigner Research Center, Budapest, Hungary
| | - M T Caccamo
- Istituto per i Processi Chimico-Fisici (IPCF)-Consiglio Nazionale delle Ricerche (CNR), Viale F. Stagno D'Alcontres, 37, 98158 Messina, Italy
| | - F Migliardo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres, 31, 98166 Messina, Italy.,Laboratoire de Chimie Physique, UMR8000, Universitè Paris Sud, 91405 Orsay cedex, France
| | - S Magazù
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences, University of Messina, Viale F. Stagno D'Alcontres, 31, 98166 Messina, Italy
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Calabrò E, Magazù S. Infrared spectroscopic demonstration of magnetic orientation in SH-SY5Y neuronal-like cells induced by static or 50 Hz magnetic fields. Int J Radiat Biol 2019; 95:781-787. [DOI: 10.1080/09553002.2019.1571256] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Emanuele Calabrò
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences, University of Messina, Messina, Italy
- CISFA, Interuniversity Consortium of Applied Physical Sciences, Messina, Italy
| | - Salvatore Magazù
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences, University of Messina, Messina, Italy
- Le Studium, Loire Valley Institute for Advanced Studies, Orléans, France
- Centre de Biophysique Moleculaire (CBM), CNRS UPR 4301 du CNRS, Orleans CEDEX 2, France
- Laboratoire Interfaces, Confinement, Matériaux et Nanostructures (ICMN), UMR 7374 CNRS, Université d’Orléans, Orléans cedex 2, France
- Istituto Nazionale di Alta Matematica “F. Severi” – INDAM, Gruppo Nazionale per la Fisica Matematica – GNFM, Rome, Italy
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Mattone E, Magazù S, Menconi G, Schembari E, Palumbo V, Di Carlo I. Effective of laparoscopy for post-operative small bowel adhesion in children. G Chir 2018; 39:388-390. [PMID: 30563604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
AIM The aim of this paper is to report a case of a child with adhesive small bowel obstruction treated by laparoscopic ap-proach. CASE REPORT A 13-year old patient developed a small bowel obstruction caused by adhesion. He was successfully treated by laparoscopic adhesiolysis and was discharged from the hospital on the 7th post-operative day in satisfacto-ry condition. DISCUSSION this disease is treated by laparoscopy very rarely, especially in children. In patients without comorbidities, such as pulmonary or cardiovascular diseases, laparoscopic approach could be considered as the first approach in children because the patient has the advantage of less pain and short hospitalization. CONCLUSION Until clinical trials will address guidelines, when possible, laparoscopic approach should be attempted.
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Magazù S, Coletta N, Migliardo F. Leonardo da Vinci: Cause, effect, linearity, and memory. J Adv Res 2018; 14:113-122. [PMID: 30258657 PMCID: PMC6154458 DOI: 10.1016/j.jare.2018.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 09/08/2018] [Accepted: 09/09/2018] [Indexed: 11/30/2022] Open
Abstract
Leonardo da Vinci’s physics concepts were analyzed. The principle of causality introducing a system impression was discussed. Leonardo hypothesized a general law on linearity (pyramidal law). Leonardo conciliated the Aristotle’s and the Newton’s positions. The dynamics of Leonardo was framed within the modern linear response theory.
In this contribution, some textual portions of the Leonardo da Vinci’s work were analyzed with the aim to highlight how, moving from Aristotle and going beyond him, he combines the intermediate positions that, from the Greek philosopher, passing through Buridan, arrive to Newton. This has been performed following a path that passes through the formulation of the principle of causality, the use of the concept of linear relationship (pyramidal law) between cause and effect and the introduction of a duration of the impression (memory) of mechanical systems. In the framework of the studies aimed to a valorization of Leonardo as a scientist, which is a crucial aspect in the analysis of the Leonardo genius, the present work sheds a new light on his intuitions about some fundamental physics concepts as well as about the conceptual model that, several centuries later, will be formalized in the modern linear response theory.
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Affiliation(s)
- Salvatore Magazù
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences, University of Messina, Viale D'Alcontres 31, 98166 Messina, Italy
| | - Nella Coletta
- Interuniversitary Consortium for Applied Physical Sciences, Viale D'Alcontres 31, 98166 Messina, Italy
| | - Federica Migliardo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale D'Alcontres 31, 98166 Messina, Italy.,Laboratoire de Chimie Physique, UMR8000, Université Paris Sud, 91405 Orsay Cedex, France
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Calabrò E, Magazù S. Resonant interaction between electromagnetic fields and proteins: A possible starting point for the treatment of cancer. Electromagn Biol Med 2018; 37:155-168. [DOI: 10.1080/15368378.2018.1499031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Emanuele Calabrò
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Messina, Italy
- CISFA - Interuniversity Consortium of Applied Physical Sciences (Consorzio Interuniversitario di Scienze Fisiche Applicate), Messina, Italy
| | - Salvatore Magazù
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences of Messina University, Messina, Italy
- Le Studium, Loire Valley Institute for Advanced Studies, Orléans & Tours, Orléans, France
- Centre de Biophysique Moleculaire (CBM), rue Charles Sadron, Laboratoire Interfaces, Confinement, Matériaux et Nanostructures (ICMN) – UMR 7374 CNRS, Université d’Orléans, Orleans, France
- Istituto Nazionale di Alta Matematica “F. Severi” – INDAM – Gruppo Nazionale per la Fisica Matematica – GNFM, Rome, Italy
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Caccamo MT, Zammuto V, Gugliandolo C, Madeleine-Perdrillat C, Spanò A, Magazù S. Thermal restraint of a bacterial exopolysaccharide of shallow vent origin. Int J Biol Macromol 2018; 114:649-655. [DOI: 10.1016/j.ijbiomac.2018.03.160] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/23/2018] [Accepted: 03/26/2018] [Indexed: 10/17/2022]
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Lombardo D, Calandra P, Magazù S, Wanderlingh U, Barreca D, Pasqua L, Kiselev MA. Soft nanoparticles charge expression within lipid membranes: The case of amino terminated dendrimers in bilayers vesicles. Colloids Surf B Biointerfaces 2018; 170:609-616. [PMID: 29975909 DOI: 10.1016/j.colsurfb.2018.06.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 06/12/2018] [Accepted: 06/17/2018] [Indexed: 12/13/2022]
Abstract
Interactions of charged nanoparticles with model bio-membranes provide important insights about the soft interaction involved and the physico-chemical parameters that influence lipid bilayers stability, thus providing key features of their cytotoxicity effects onto cellular membranes. With this aim, the self-assembly processes between polyamidoamine dendrimers (generation G = 2.0 and G = 4.0) and dipalmitoylphosphatidylcholine (DPPC) lipids were investigated by means of Zeta potential analysis, x-rays, Raman and quasielastic light scattering experiments. Raman scattering data evidenced that dendrimers penetration produce a perturbation of the DPPC vesicles alkyl chains. A linear increase of liposome zeta-potential with increasing PAMAM concentration evidenced that only a fraction of the dendrimers effective charge contributes to the expression of the charge at the surface of the DPPC liposome. The linear region of the zeta-potential extends toward higher PAMAM concentrations as the dendrimer generation decreases from G = 4.0 to G = 2.0. Further increase in PAMAM concentration, outside of the linear region, causes a perturbation of the bilayer characterized by the loss in multilamellar correlation and the increase of DPPC liposome hydrodynamic radius. The findings of our investigation help to rationalize the effect of nanoparticles electrostatic interaction within lipid vesicles as well as to provide important insights about the perturbation of lipid bilayers membrane induced by nanoparticles inclusion.
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Affiliation(s)
- Domenico Lombardo
- Consiglio Nazionale delle Ricerche, Istituto per i Processi Chimico-Fisici, 98158 Messina, Italy.
| | - Pietro Calandra
- Consiglio Nazionale delle Ricerche, Istituto Studio Materiali Nanostrutturati, 00015 Roma, Italy
| | - Salvatore Magazù
- Dipartimento di Fisica e Scienze della Terra, Università di Messina, 98166 Messina, Italy
| | - Ulderico Wanderlingh
- Dipartimento di Fisica e Scienze della Terra, Università di Messina, 98166 Messina, Italy
| | - Davide Barreca
- Dipartimento di Scienze chimiche, biologiche, farmaceutiche ed ambientali, Università di Messina, 98166 Messina, Italy
| | - Luigi Pasqua
- Department of Environmental and Chemical Engineering, University of Calabria, 87036 Rende (CS), Italy
| | - Mikhail A Kiselev
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Moscow 141980, Russia
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Abstract
This work reports the results of an experimental study where laser techniques are applied to
acoustically levitated droplets of trehalose aqueous solutions in order to perform spectroscopic analyses as a function of concentration and to test the theoretical diameter law. The study of such systems is important in order to better understand the behaviour of trehalose-synthesizing extremophiles that live in extreme environments. In particular, it will be shown how acoustic levitation, combined with optical spectroscopic instruments allows to explore a wide concentration range and to test the validity of the diameter law as a function of levitation lag time, i.e. the D2 vs t law. On this purpose a direct diameter monitoring by a video camera and a laser pointer was first performed; then the diameter was also evaluated by an indirect measure through an OH/CH band area ratio analysis of collected Raman and Infrared spectra. It clearly emerges that D2 vs t follows a linear trend for about 20 minutes, reaching then a plateau at longer time. This result shows how trehalose is able to avoid total water evaporation, this property being essential for the surviving of organisms under extreme environmental conditions.
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Calabrò E, Magazù S. The α-helix alignment of proteins in water solution toward a high-frequency electromagnetic field: A FTIR spectroscopy study. Electromagn Biol Med 2017. [DOI: 10.1080/15368378.2017.1328691] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Emanuele Calabrò
- Department of Mathematics and Informatics Sciences, Physics Sciences and Earth Sciences, University of Messina, Messina, Italy
| | - Salvatore Magazù
- Department of Mathematics and Informatics Sciences, Physics Sciences and Earth Sciences, University of Messina, Messina, Italy
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Calabrò E, Magazù S. Induced-orientation of nitrogen monoxide and azide ion vibrations in human hemoglobin in bidistilled water solution under a static magnetic field. Bioelectromagnetics 2017; 38:447-455. [PMID: 28453873 DOI: 10.1002/bem.22056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 04/06/2017] [Indexed: 11/09/2022]
Abstract
In this study, we report the effects of static magnetic fields (SMFs) at 200 mT on different hemoglobin aqueous solutions, in the absence and in the presence of sucrose and trehalose, studied by FTIR spectroscopic techniques. Significant decrease in intensity of Amide I and Amide II vibration bands was observed after 6 h exposure for hemoglobin in bidistilled water solution. Also, it was observed that the decrease in intensity of the Amide I band was larger than the Amide II after exposure. This result can be explained assuming that an SMF induces increase of hydrogen bonding in hemoglobin in bidistilled water solution. In particular, the use of second-derivative analysis highlighted two absorption peaks at 1907 and 2022 cm-1 that can be attributed to nitrogen monoxide vibration and antisymmetric stretch of azide ion bound, respectively. These vibrations increased significantly after exposure to the SMF (P < 0.01). This result can be explained assuming that exposure to an SMF induces the orientation of nitrogen monoxide and azide ion ligands toward the direction of the field. Finally, it was observed that the addition of sucrose and trehalose in hemoglobin aqueous solution inhibited such alterations, suggesting that bioprotective effectiveness of these disaccharides occurs after exposure to an SMF. Bioelectromagnetics. 38:447-455, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Emanuele Calabrò
- Department of Mathematics and Informatics Sciences, Physics Sciences and Earth Sciences, University of Messina, Messina, Italy
| | - Salvatore Magazù
- Department of Mathematics and Informatics Sciences, Physics Sciences and Earth Sciences, University of Messina, Messina, Italy
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Caccamo MT, Magazù S. Ethylene Glycol - Polyethylene Glycol (EG-PEG) Mixtures: Infrared Spectra Wavelet Cross-Correlation Analysis. Appl Spectrosc 2017; 71:401-409. [PMID: 27558367 DOI: 10.1177/0003702816662882] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Infrared spectra were collected on mixtures of ethylene glycol (EG) and polyethylene glycol 600 (PEG600) as a function of weight fraction from pure EG to pure PEG600. In this paper, it will be shown that while the OH vibrational contribution drastically reduces its center frequency from 3450 cm-1 to 3300 cm-1 in the weight fraction range 0-25%, the displacement of the mixture spectral features of the mixtures from ideal behavior, i.e., in the absence of interaction, shows the presence of a non-ideal mixing process. Furthermore, wavelet cross-correlation analysis of the registered pairs of spectra and of the intramolecular O-H stretching contributions reveals how the addition of a small amount of pure EG to PEG600 dramatically influences the structural properties of the polymeric matrix, owing to an increase the intermolecular connectivity. In particular, the wavelet cross-correlation parameters, evaluated between each pair of the registered data as a function of weight fraction, in a linear-logarithmic plot, reveals an inflection point for a weight fraction of about 25% of EG, which confirms that, within the three-dimensional networks of hydrogen-bonded EG-PEG600 molecules, a key role is played by EG in determining an increase in the hydrogen-bond network density.
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Affiliation(s)
- Maria Teresa Caccamo
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Dell'Università di Messina, Italy
| | - Salvatore Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Dell'Università di Messina, Italy
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Angell CA, Magazù S, Migliardo F. Science for life - Recent advances in biochemical and biophysical methods. Biochim Biophys Acta Gen Subj 2016; 1861:3501-3503. [PMID: 27657805 DOI: 10.1016/j.bbagen.2016.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- C Austen Angell
- School of Molecular Sciences, Arizona State University, Tempe, AZ 85287-1604, USA
| | - Salvatore Magazù
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences, University of Messina, Viale D'Alcontres 31, 98166 Messina, Italy
| | - Federica Migliardo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale D'Alcontres 31, 98166 Messina, Italy.
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Lombardo D, Calandra P, Bellocco E, Laganà G, Barreca D, Magazù S, Wanderlingh U, Kiselev MA. Effect of anionic and cationic polyamidoamine (PAMAM) dendrimers on a model lipid membrane. Biochim Biophys Acta 2016; 1858:2769-2777. [PMID: 27521487 DOI: 10.1016/j.bbamem.2016.08.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 08/02/2016] [Accepted: 08/07/2016] [Indexed: 12/25/2022]
Abstract
In spite of the growing variety of biological applications of dendrimer-based nanocarriers, a major problem of their potential applications in bio-medicine is related to the disruption of lipid bilayers and the cytotoxicity caused by the aggregation processes involved onto cellular membranes. With the aim to study model dendrimer-biomembrane interaction, the self-assembly processes of a mixture of charged polyamidoamine (PAMAM) dendrimers and dipalmitoylphosphatidylcholine (DPPC) lipids were investigated by means of Zeta potential analysis, Raman and x-ray scattering. Zwitterionic DPPC liposomes showed substantially different behaviors during their interaction with negatively charged (generation G=2.5) sodium carboxylate terminated (COO- Na+) dendrimers or positively charged (generation G=3.0) amino terminated (-NH2) dendrimers. More specifically the obtained results evidence the sensitive interactions between dendrimer terminals and lipid molecules at the surface of the liposome, with an enhancement of the liposome surface zeta potential, as well as in the hydrophobic region of the bilayers, where dendrimer penetration produce a perturbation of the hydrophobic alkyl chains of the bilayers. Analysis of the SAXS structure factor with a suitable model for the inter-dendrimers electrostatic potential allows an estimation of an effective charge of 15 ǀeǀ for G=2.5 and 7.6 ǀeǀ for G=3.0 PAMAM dendrimers. Only a fraction (about 1/7) of this charge contributes to the linear increase of liposome zeta-potential with increasing PAMAM/DPPC molar fraction. The findings of our investigation may be applied to rationalize the effect of the nanoparticles electrostatic interaction in solution environments for the design of new drug carriers combining dendrimeric and liposomal technology.
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Affiliation(s)
- Domenico Lombardo
- Consiglio Nazionale delle Ricerche, Istituto per i Processi Chimico-Fisici, Viale F. S. D'Alcontres 37, 98158 Messina, Italy.
| | - Pietro Calandra
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, Via Salaria km 29.300, Monterotondo Stazione, 00015 Roma, Italy
| | - Ersilia Bellocco
- Dipartimento di Scienze chimiche, biologiche, farmaceutiche ed ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Giuseppina Laganà
- Dipartimento di Scienze chimiche, biologiche, farmaceutiche ed ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Davide Barreca
- Dipartimento di Scienze chimiche, biologiche, farmaceutiche ed ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Salvatore Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy; LE STUDIUM, Loire Valley Institute for Advanced Studies, Orléans & Tours; and CBM (CNRS), rue Charles Sandron, 45071 Orléans, France
| | - Ulderico Wanderlingh
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Mikhail A Kiselev
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Ulica Joliot-Curie 6, Dubna, Moscow 141980, Russia
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Magazù S, Mezei F, Falus P, Farago B, Mamontov E, Russina M, Migliardo F. Protein dynamics as seen by (quasi) elastic neutron scattering. Biochim Biophys Acta Gen Subj 2016; 1861:3504-3512. [PMID: 27476795 DOI: 10.1016/j.bbagen.2016.07.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 07/18/2016] [Accepted: 07/27/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND Elastic and quasielastic neutron scattering studies proved to be efficient probes of the atomic mean square displacement (MSD), a fundamental parameter for the characterization of the motion of individual atoms in proteins and its evolution with temperature and compositional environment. SCOPE OF REVIEW We present a technical overview of the different types of experimental situations and the information quasi-elastic neutron scattering approaches can make available. In particular, MSD can crucially depend on the time scale over which the averaging (building of the "mean") takes place, being defined by the instrumental resolution. Due to their high neutron scattering cross section, hydrogen atoms can be particularly sensitively observed with little interference by the other atoms in the sample. A few examples, including new data, are presented for illustration. MAJOR CONCLUSIONS The incoherent character of neutron scattering on hydrogen atoms restricts the information obtained to the self-correlations in the motion of individual atoms, simplifying at the same time the data analysis. On the other hand, the (often overlooked) exploration of the averaging time dependent character of MSD is crucial for unambiguous interpretation and can provide a wealth of information on micro- and nanoscale atomic motion in proteins. GENERAL SIGNIFICANCE By properly exploiting the broad range capabilities of (quasi)elastic neutron scattering techniques to deliver time dependent characterization of atomic displacements, they offer a sensitive, direct and simple to interpret approach to exploration of the functional activity of hydrogen atoms in proteins. Partial deuteration can add most valuable selectivity by groups of hydrogen atoms. "This article is part of a Special Issue entitled "Science for Life" Guest Editor: Dr. Austen Angell, Dr. Salvatore Magazù and Dr. Federica Migliardo".
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Affiliation(s)
- S Magazù
- Department of Mathematical and Informatics Sciences, Physical Sciences and Earth Sciences, University of Messina, Viale D'Alcontres 31, 98166 Messina, Italy
| | - F Mezei
- European Spallation Source ERIC, P.O. BOX 176, 22100 Lund, Sweden; HAS Wigner Researh Center, P.O. BOX 49, 1525 Budapest, Hungary.
| | - P Falus
- Institut-Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
| | - B Farago
- Institut-Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
| | - E Mamontov
- Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831, USA
| | - M Russina
- Helmholtz-Zentrum-Berlin, Glienicker Str 100, 14109 Berlin, Germany
| | - F Migliardo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale D'Alcontres 31, 98166 Messina, Italy; Institute for Integrative Biology of the Cell (I2BC), CEA-CNRS-Université Paris Sud, 91400 Orsay, France
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Magazù S, Migliardo F, Benedetto A, La Torre R, Hennet L. Comments on: Bio-protective effects of homologous disaccharides on biological macromolecules. Eur Biophys J 2016; 45:379. [PMID: 27015818 DOI: 10.1007/s00249-016-1124-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Magazù S, Migliardo F, Telling MTF. Comments on: Study of the dynamical properties of water in disaccharide solutions. Eur Biophys J 2016; 45:377. [PMID: 27015817 DOI: 10.1007/s00249-016-1123-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Magazù S, Mamontov E. A neutron spectrometer concept implementing RENS for studies in life sciences. Biochim Biophys Acta Gen Subj 2016; 1861:3632-3637. [PMID: 27118237 DOI: 10.1016/j.bbagen.2016.04.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 04/18/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND Resolution Elastic Neutron Scattering (RENS) method involves performing elastic scattering intensity scans as a function of the instrumental energy resolution and as a function of temperature. METHODS In the framework of RENS, numerical simulation and experimental data show that in the measured elastic scattering law against the logarithm of the instrumental energy resolution an inflection point occurs when the resolution time intersects the system relaxation time; conversely, in the measured elastic scattering law against temperature an inflection point turns up when the system relaxation time intersects the resolution time. RESULTS For practical implementation of the RENS technique, a dedicated neutron spectrometer would be needed. Here we propose a concept of such a spectrometer that utilizes mechanical velocity selection of both incident and scattered neutrons over a wide angular range. The instrument is able to collect intensity scans vs energy resolution where the instrumental resolution time changes crisscrossing the system relaxation time, and intensity scans vs temperature where the system relaxation time changes intersecting the instrumental resolution time. CONCLUSIONS We propose a RENS spectrometer concept based on velocity selection of incident neutrons and wide-angle velocity selection of scattered neutrons achieved by the same rotating collimator-type mechanical device with the optimized shape of blades. GENERAL SIGNIFICANCE RENS spectrometer is strongly appealing and innovative because of the simultaneous data collection as a function of energy resolution, wide wavevector range and temperature. Such a spectrometer would be the first practical implementation of RENS concept with a broad range of applications in Life Sciences. This article is part of a Special Issue entitled "Science for Life" Guest Editor: Dr. Austen Angell, Dr. Salvatore Magazù and Dr. Federica Migliardo.
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Affiliation(s)
- S Magazù
- Department of Mathematics and Informatics Sciences, Physics Sciences and Earth Sciences, University of Messina, Viale F. S. D'Alcontres 31, 98166 Messina, Italy.
| | - E Mamontov
- Chemical and Engineering Materials Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
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Scaioli V, Granocchio E, Curzi S, Alverà S, Airaghi G, Musso G, Magazù S, Pesce I, Sarti D, Giacomelli S, Molteni B. 99. Auditory event-related potentials (ERPs) evoked by human syllables, musical notes/chords and animal sounds in pre-school children with specific expressive language disorders (SELDs) for assessing the selectiveness of auditory processing. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2015.09.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Calabrò E, Magazù S. Parallel β-sheet vibration band increases with proteins dipole moment under exposure to 1765 MHz microwaves. Bioelectromagnetics 2016; 37:99-107. [DOI: 10.1002/bem.21956] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Accepted: 01/13/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Emanuele Calabrò
- Department of Physics and Earth Sciences; University of Messina; Messina Italy
| | - Salvatore Magazù
- Department of Physics and Earth Sciences; University of Messina; Messina Italy
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Calabrò E, Magazù S. Interactions of Bovine Muscle Tissue with 2450 MHz Microwaves Studied in the Mid-Infrared Region. International Journal of Food Properties 2015. [DOI: 10.1080/10942912.2015.1071387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Emanuele Calabrò
- Department of Mathematics, Physics and Earth Sciences, University of Messina, Messina, Italy
| | - Salvatore Magazù
- Department of Mathematics, Physics and Earth Sciences, University of Messina, Messina, Italy
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Barreca D, Laganà G, Magazù S, Migliardo F, Gattuso G, Bellocco E. FTIR, ESI-MS, VT-NMR and SANS study of trehalose thermal stabilization of lysozyme. Int J Biol Macromol 2014; 63:225-32. [DOI: 10.1016/j.ijbiomac.2013.11.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 11/20/2013] [Accepted: 11/23/2013] [Indexed: 10/25/2022]
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Magazù S, Migliardo F, Benedetto A, Vertessy B. Protein dynamics by neutron scattering: The protein dynamical transition and the fragile-to-strong dynamical crossover in hydrated lysozyme. Chem Phys 2013. [DOI: 10.1016/j.chemphys.2013.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Magazù S, Frauenfelder H. Editorial of Special Issue of Chemical Physics “Neutrons Scattering Highlights on Water and Biological Systems”. Chem Phys 2013. [DOI: 10.1016/j.chemphys.2013.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Calabrò E, Condello S, Currò M, Ferlazzo N, Caccamo D, Magazù S, Ientile R. Effects of low intensity static magnetic field on FTIR spectra and ROS production in SH-SY5Y neuronal-like cells. Bioelectromagnetics 2013; 34:618-29. [PMID: 24217848 DOI: 10.1002/bem.21815] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Accepted: 08/12/2013] [Indexed: 12/28/2022]
Abstract
Biological effects of man-made electromagnetic fields (EMFs) have been studied so far by experimental approaches exposing animals and cell cultures to EMFs. However, the evidence for cell toxicity induced by static magnetic field (SMF) is still uncertain. We investigated the effects produced by the exposure of human SH-SY5Y neuronal-like cells to a uniform magnetic field at intensities of 2.2 mT, which is less than the recommended public exposure limits set by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). A decrease of membrane mitochondrial potential up to 30% was measured after 24 h of exposure to SMF in SH-SY5Y cells, and this effect was associated with reactive oxygen species production increase. Fourier transform infrared spectroscopy (FTIR) analysis showed that exposure to a static magnetic intensity around 2.2 mT changed the secondary structure of cellular proteins and lipid components. The vibration bands relative to the methylene group increased significantly after 4 h of exposure, whereas further exposure up to 24 h produced evident shifts of amide I and II modes and a relative increase in β-sheet contents with respect to α-helix components. Our study demonstrated that a moderate SMF causes alteration in cell homeostasis, as indicated by FTIR spectroscopy observations of changes in protein structures that are part of cell response to magnetic field exposure.
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Abstract
To get some insight into the hydration mechanisms of homologousdisaccharides, we report measurements on trehalose, maltose, and sucroseaqueous solutions. The interest on these systems is mainly due to theextraordinary properties of disaccharides and especially of trehalose, themost effective bio-protector against freezing and dehydration. To carry outthis study we have investigated the volumetric properties of the threedisaccharide solutions, by performing density and ultrasonic velocitymeasurements at different concentration and temperature values. Whatemerges from these studies is that trehalose shows, in comparison withmaltose and sucrose, the greatest structural sensitivity to temperaturechanges and the smallest values of the partial molar volume in all theinvestigated temperature range, this circumstance being indicative of a morepacked conformational arrangement.
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Affiliation(s)
- C Branca
- Dipartimento di Fisica and INFM, Università di Messina, P.O. Box 55, C.da Papardo S. Sperone, 98166 Messina, Italy
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Calabrò E, Magazù S. Measurement of output power density from mobile phone as a function of input sound frequency. J Microw Power Electromagn Energy 2013; 47:270-279. [PMID: 24779229 DOI: 10.1080/08327823.2013.11689864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Measurements of power density emitted by a mobile phone were carried out as a function of the sound frequency transmitted by a sound generator, ranging from 250 to 14000 Hz. Output power density was monitored by means of the selective radiation meter Narda SRM 3000 in spectrum analysis mode, and the octave frequency analysis of each tone used for the experimental design was acquired by the sound level meter Larson Davis LxT Wind. Vodafone providers were used for mobile phone calls with respect to various local base station in Southern-Italy. A relationship between the mobile phone microwaves power density and the sound frequencies transmitted by the sound generator was observed. In particular, microwaves power density level decreases significantly at sound frequency values larger than 4500 Hz. This result can be explained assuming that discontinuous transmission mode of global system for mobile communications is powered not only in silence-mode, but also at frequencies larger than 4500 Hz.
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Magazù S, Migliardo F, Gonzalez MA, Mondelli C, Parker SF, Vertessy BG. Molecular mechanisms of survival strategies in extreme conditions. Life (Basel) 2012; 2:364-76. [PMID: 25371270 PMCID: PMC4187154 DOI: 10.3390/life2040364] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 11/08/2012] [Accepted: 11/26/2012] [Indexed: 01/04/2023] Open
Abstract
Today, one of the major challenges in biophysics is to disclose the molecular mechanisms underlying biological processes. In such a frame, the understanding of the survival strategies in extreme conditions received a lot of attention both from the scientific and applicative points of view. Since nature provides precious suggestions to be applied for improving the quality of life, extremophiles are considered as useful model-systems. The main goal of this review is to present an overview of some systems, with a particular emphasis on trehalose playing a key role in several extremophile organisms. The attention is focused on the relation among the structural and dynamic properties of biomolecules and bioprotective mechanisms, as investigated by complementary spectroscopic techniques at low- and high-temperature values.
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Affiliation(s)
- Salvatore Magazù
- Department of Physics, University of Messina, Viale D'Alcontres 31, P.O. Box 55-98166, Messina, Italy.
| | - Federica Migliardo
- Department of Physics, University of Messina, Viale D'Alcontres 31, P.O. Box 55-98166, Messina, Italy.
| | - Miguel A Gonzalez
- Institut Laue Langevin, 6, Rue Jules Horowitz, F-38042 Grenoble Cedex 9, France.
| | - Claudia Mondelli
- CNR-IOM-OGG, Institut Laue Langevin, 6, Rue Jules Horowitz, F-38042 Grenoble Cedex 9, France.
| | - Stewart F Parker
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Oxon, OX11 0QX, UK.
| | - Beata G Vertessy
- Institute of Enzymology, Research Center for Natural Sciences, Hungarian Academy of Science, Budapest, Hungary.
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Barreca D, Laganà G, Ficarra S, Gattuso G, Magazù S, Torre R, Tellone E, Bellocco E. Spectroscopic Determination of Lysozyme Conformational Changes in the Presence of Trehalose and Guanidine. Cell Biochem Biophys 2012. [DOI: 10.1007/s12013-012-9485-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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50
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Affiliation(s)
- S. Magazù
- Dipartimento di Fisica dell’Università degli Studi di Messina, Viale S. D’Alcontres
31, 98166, Messina, Italy
| | - F. Migliardo
- Dipartimento di Fisica dell’Università degli Studi di Messina, Viale S. D’Alcontres
31, 98166, Messina, Italy
| | - M. T. Caccamo
- Dipartimento di Fisica dell’Università degli Studi di Messina, Viale S. D’Alcontres
31, 98166, Messina, Italy
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