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Thierry T, Giuso V, Polo F, Mercandelli P, Chen YT, Chang CH, Mauro M, Bellemin-Laponnaz S. A stable and true-blue emissive hexacoordinate Si(IV) N-heterocyclic carbene complex and its use in organic light-emitting diodes. Dalton Trans 2024; 53:6445-6450. [PMID: 38511259 DOI: 10.1039/d4dt00420e] [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: 03/22/2024]
Abstract
A neutral hexacoordinate Si(IV) complex containing two tridentate N-heterocyclic carbene ligands is synthesised and characterized by X-ray crystallography, optical spectroscopy, electrochemistry and computational methods. The stable compound exhibits remarkable deep-blue photoluminescence particularly in the solid state, which enables its use as an electroluminescent material in organic light-emitting diodes.
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Affiliation(s)
- Thibault Thierry
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 - Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg, France.
| | - Valerio Giuso
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 - Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg, France.
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice, Italy
- European Centre for Living Technology (ECLT), Ca' Foscari University of Venice, Ca' Bottacin, 30124, Venice, Italy
| | | | - Yi-Ting Chen
- Department of Electrical Engineering, Yuan Ze University, 32003 Taoyuan, Taiwan
| | - Chih-Hao Chang
- Department of Electrical Engineering, Yuan Ze University, 32003 Taoyuan, Taiwan
| | - Matteo Mauro
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 - Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg, France.
| | - Stéphane Bellemin-Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 - Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg, France.
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2
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Lushaj E, Bordin M, Akbar K, Liccardo L, Barroso-Martín I, Rodríguez-Castellón E, Vomiero A, Moretti E, Polo F. Highly Efficient Solar-Light-Driven Photodegradation of Metronidazole by Nickel Hexacyanoferrate Nanocubes Showing Enhanced Catalytic Performances. Small Methods 2024:e2301541. [PMID: 38368269 DOI: 10.1002/smtd.202301541] [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] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/29/2024] [Indexed: 02/19/2024]
Abstract
Environmental pollution is a complex problem that threatens the health and life of animal and plant ecosystems on the planet. In this respect, the scientific community faces increasingly challenging tasks in designing novel materials with beneficial properties to address this issue. This study describes a simple yet effective synthetic protocol to obtain nickel hexacyanoferrate (Ni-HCF) nanocubes as a suitable photocatalyst, which can enable an efficient photodegradation of hazardous anthropogenic organic contaminants in water, such as antibiotics. Ni-HCF nanocubes are fully characterized and their optical and electrochemical properties are investigated. Preliminary tests are also carried out to photocatalytically remove metronidazole (MDZ), an antibiotic that is difficult to degrade and has become a common contaminant as it is widely used to treat infections caused by anaerobic microorganisms. Under simulated solar light, Ni-HCF displays substantial photocatalytic activity, degrading 94.3% of MDZ in 6 h. The remarkable performance of Ni-HCF nanocubes is attributeto a higher ability to separate charge carriers and to a lower resistance toward charge transfer, as confirmed by the electrochemical characterization. These achievements highlight the possibility of combining the performance of earth-abundant catalysts with a renewable energy source for environmental remediation, thus meeting the requirements for sustainable development.
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Affiliation(s)
- Edlind Lushaj
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia, 30172, Italy
| | - Matteo Bordin
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia, 30172, Italy
| | - Kamran Akbar
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia, 30172, Italy
| | - Letizia Liccardo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia, 30172, Italy
| | - Isabel Barroso-Martín
- Department of Inorganic Chemistry, Crystallography and Mineralogy, Faculty of Sciences, University of Malaga, Campus de Teatinos, Malaga, 29071, Spain
| | - Enrique Rodríguez-Castellón
- Department of Inorganic Chemistry, Crystallography and Mineralogy, Faculty of Sciences, University of Malaga, Campus de Teatinos, Malaga, 29071, Spain
| | - Alberto Vomiero
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia, 30172, Italy
- Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, Luleå, 97187, Sweden
| | - Elisa Moretti
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia, 30172, Italy
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia, 30172, Italy
- European Centre for Living Technology (ECLT), Ca' Bottacin, Dorsoduro 3911, Calle Crosera, Venice, 30124, Italy
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Raucci A, Cimmino W, Romanò S, Singh S, Normanno N, Polo F, Cinti S. Electrochemical detection of miRNA using commercial and hand-made screen-printed electrodes: liquid biopsy for cancer management as case of study. ChemistryOpen 2024:e202300203. [PMID: 38333968 DOI: 10.1002/open.202300203] [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: 09/29/2023] [Revised: 01/15/2024] [Indexed: 02/10/2024] Open
Abstract
The growth of liquid biopsy, i. e., the possibility of obtaining health information by analysing circulating species (nucleic acids, cells, proteins, and vesicles) in peripheric biofluids, is pushing the field of sensors and biosensors beyond the limit to provide decentralised solutions for nonspecialists. In particular, among all the circulating species that can be adopted in managing cancer evolution, both for diagnostic and prognostic applications, microRNAs have been highly studied and detected. The development of electrochemical devices is particularly relevant for liquid biopsy purposes, and the screen-printed electrodes (SPEs) represent one of the building blocks for producing novel portable devices. In this work, we have taken miR-2115-3p as model target (it is related to lung cancer), and we have developed a biosensor by exploiting the use of a complementary DNA probe modified with methylene blue as redox mediator. In particular, the chosen sensing architecture was applied to serum measurements of the selected miRNA, obtaining a detection limit within the low nanomolar range; in addition, various platforms were interrogated, namely commercial and hand-made SPEs, with the aim of providing the reader with some insights about the optimal platform to be used by considering both the cost and the analytical performance.
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Affiliation(s)
- Ada Raucci
- Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 9, 80131, Naples, Italy
| | - Wanda Cimmino
- Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 9, 80131, Naples, Italy
| | - Sabrina Romanò
- Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 9, 80131, Naples, Italy
| | - Sima Singh
- Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 9, 80131, Naples, Italy
| | - Nicola Normanno
- Cell Biology and Biotherapy Unit, Istituto Nazionale Tumori (IRCCS) Fondazione Pascale, Via Mariano Semmola 53, 80131, Naples, Italy
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy
| | - Stefano Cinti
- Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 9, 80131, Naples, Italy
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Moro G, Fratte CD, Normanno N, Polo F, Cinti S. Point-of-Care Testing for the Detection of MicroRNAs: Towards Liquid Biopsy on a Chip. Angew Chem Int Ed Engl 2023; 62:e202309135. [PMID: 37672490 DOI: 10.1002/anie.202309135] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/23/2023] [Accepted: 09/06/2023] [Indexed: 09/08/2023]
Abstract
Point-of-care (PoC) testing is revolutionizing the healthcare sector improving patient care in daily hospital practice and allowing reaching even remote geographical areas. In the frame of cancer management, the design and validation of PoC enabling the non-invasive, rapid detection of cancer markers is urgently required to implement liquid biopsy in clinical practice. Therefore, focusing on stable blood-based markers with high-specificity, such as microRNAs, is of crucial importance. In this work, we highlight the potential impact of circulating microRNAs detection on cancer management and the crucial role of PoC testing devices, especially for low-income countries. A detailed discussion about the challenges that should be faced to promote the technological transfer and clinical use of these tools has been added, to provide the readers with a complete overview of potentialities and current limitations.
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Affiliation(s)
- Giulia Moro
- Department of Pharmacy, University of Naples Federico II, Via Montesano 9, 80131, Naples, Italy
| | - Chiara Dalle Fratte
- Department of Medical Biotechnology and Translational Medicine, Postgraduate School of Clinical Pharmacology and Toxicology, University of Milan "Statale", Via Vanvitelli 32, 20133, Milan, Italy
| | - Nicola Normanno
- Cell Biology and Biotherapy Unit, Istituto Nazionale Tumori (IRCCS), Fondazione Pascale, Via Mariano Semmola, 53, 80131, Naples, Italy
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy
- European Centre for Living Technology (ECLT), Ca' Foscari University of Venice Ca' Bottacin, 30124, Venice, Italy
| | - Stefano Cinti
- Department of Pharmacy, University of Naples Federico II, Via Montesano 9, 80131, Naples, Italy
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5
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Jouaiti A, Ballerini L, Shen HL, Viel R, Polo F, Kyritsakas N, Haacke S, Huang YT, Lu CW, Gourlaouen C, Su HC, Mauro M. Binuclear Copper(I) Complexes for Near-Infrared Light-Emitting Electrochemical Cells. Angew Chem Int Ed Engl 2023; 62:e202305569. [PMID: 37345993 DOI: 10.1002/anie.202305569] [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: 04/20/2023] [Revised: 06/12/2023] [Accepted: 06/22/2023] [Indexed: 06/23/2023]
Abstract
Two binuclear heteroleptic CuI complexes, namely Cu-NIR1 and Cu-NIR2, bearing rigid chelating diphosphines and π-conjugated 2,5-di(pyridin-2-yl)thiazolo[5,4-d]thiazole as the bis-bidentate ligand are presented. The proposed dinuclearization strategy yields a large bathochromic shift of the emission when compared to the mononuclear counterparts (M1-M2) and enables shifting luminescence into the near-infrared (NIR) region in both solution and solid state, showing emission maximum at ca. 750 and 712 nm, respectively. The radiative process is assigned to an excited state with triplet metal-to-ligand charge transfer (3 MLCT) character as demonstrated by in-depth photophysical and computational investigation. Noteworthy, X-ray analysis of the binuclear complexes unravels two interligand π-π-stacking interactions yielding a doubly locked structure that disfavours flattening of the tetrahedral coordination around the CuI centre in the excited state and maintain enhanced NIR luminescence. No such interaction is present in M1-M2. These findings prompt the successful use of Cu-NIR1 and Cu-NIR2 in NIR light-emitting electrochemical cells (LECs), which display electroluminescence maximum up to 756 nm and peak external quantum efficiency (EQE) of 0.43 %. Their suitability for the fabrication of white-emitting LECs is also demonstrated. To the best of our knowledge, these are the first examples of NIR electroluminescent devices based on earth-abundant CuI emitters.
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Affiliation(s)
- Abdelaziz Jouaiti
- Laboratoire de Synthèse et Fonctions des Architectures Moléculaires, UMR7140 Chimie de la Matiere Complexe, Université de Strasbourg & CNRS, 4 rue Blaise, Pascal, 67000, Strasbourg, France
| | - Lavinia Ballerini
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) UMR7504, Université de Strasbourg & CNRS, 23 rue du Loess, 67083, Strasbourg, France
| | - Hsiang-Ling Shen
- Institute of Lighting and Energy Photonics, National Yang Ming Chiao Tung University, Tainan, 71150, Taiwan
| | - Ronan Viel
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) UMR7504, Université de Strasbourg & CNRS, 23 rue du Loess, 67083, Strasbourg, France
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venezia, Italy
| | - Nathalie Kyritsakas
- Service de Radiocristallographie, Fédération de chimie Le Bel - FR2010, Université de Strasbourg & CNRS, 1, rue Blaise Pascal, 67008, Strasbourg, France
| | - Stefan Haacke
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) UMR7504, Université de Strasbourg & CNRS, 23 rue du Loess, 67083, Strasbourg, France
| | - Yu-Ting Huang
- Department of Applied Chemistry, Providence University, Taichung, 43301, Taiwan
| | - Chin-Wei Lu
- Department of Applied Chemistry, Providence University, Taichung, 43301, Taiwan
| | - Christophe Gourlaouen
- Laboratoire de Chimie Quantique, Institut de Chimie de Strasbourg UMR7177, Université de Strasbourg & CNRS, 4 Rue Blaise Pascal, 67008, Strasbourg, France
| | - Hai-Ching Su
- Institute of Lighting and Energy Photonics, National Yang Ming Chiao Tung University, Tainan, 71150, Taiwan
| | - Matteo Mauro
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) UMR7504, Université de Strasbourg & CNRS, 23 rue du Loess, 67083, Strasbourg, France
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Spigariol N, Liccardo L, Lushaj E, Castellon E, Martin IB, Polo F, Vomiero A, Cattaruzza E, Moretti E. Titania nanorods array homojunction with sub-stoichiometric TiO2 for enhanced methylene blue photodegradation. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.114134] [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: 03/28/2023]
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Moro G, Severin Sfragano P, Ghirardo J, Mazzocato Y, Angelini A, Palchetti I, Polo F. Bicyclic peptide-based assay for uPA cancer biomarker. Biosens Bioelectron 2022; 213:114477. [PMID: 35751954 DOI: 10.1016/j.bios.2022.114477] [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: 04/16/2022] [Revised: 06/02/2022] [Accepted: 06/08/2022] [Indexed: 11/02/2022]
Abstract
The use of synthetic bioreceptors to develop biosensing platforms has been recently gaining momentum. This case study compares the performance of a biosensing platform for the human biomarker urokinase-type plasminogen activator (h-uPA) when using two bicyclic peptides (P1 and P2) with different affinities for the target protein. The bioreceptors P1 and P2 were immobilized on magnetic microbeads and tested within a sandwich-type affinity electrochemical assay. Apart from enabling h-uPA quantification at nanomolar levels (105.8 ng/mL for P1 and 32.5 ng/mL for P2), this case study showed the potential of synthetic bicyclic peptides applicability and how bioreceptor affinity can influence the performance of the final sensing platform.
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Affiliation(s)
- Giulia Moro
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy
| | - Patrick Severin Sfragano
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Jessica Ghirardo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy
| | - Ylenia Mazzocato
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy
| | - Alessandro Angelini
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy; European Centre for Living Technology (ECLT), Ca' Bottacin, Dorsoduro 3911, Calle Crosera, Venice, 30124, Italy
| | - Ilaria Palchetti
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy.
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy; European Centre for Living Technology (ECLT), Ca' Bottacin, Dorsoduro 3911, Calle Crosera, Venice, 30124, Italy.
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Karimian N, Polo F, Ugo P. Advanced Electrochemical and Opto-Electrochemical Biosensors for Quantitative Analysis of Disease Markers and Viruses. Biosensors 2022; 12:bios12050296. [PMID: 35624597 PMCID: PMC9138235 DOI: 10.3390/bios12050296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 04/29/2022] [Indexed: 11/16/2022]
Affiliation(s)
- Najmeh Karimian
- Department of Molecular Sciences and Nanosystems, University Ca’ Foscari of Venice, Via Torino 155, 30172 Mestre-Venezia, Italy; (F.P.); (P.U.)
- Correspondence:
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems, University Ca’ Foscari of Venice, Via Torino 155, 30172 Mestre-Venezia, Italy; (F.P.); (P.U.)
- European Centre for Living Technology (ECLT), Ca’ Bottacin, Dorsoduro 3911, 30124 Venice, Italy
| | - Paolo Ugo
- Department of Molecular Sciences and Nanosystems, University Ca’ Foscari of Venice, Via Torino 155, 30172 Mestre-Venezia, Italy; (F.P.); (P.U.)
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9
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Sfragano PS, Moro G, Polo F, Palchetti I. The Role of Peptides in the Design of Electrochemical Biosensors for Clinical Diagnostics. Biosensors (Basel) 2021; 11:bios11080246. [PMID: 34436048 PMCID: PMC8391273 DOI: 10.3390/bios11080246] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/10/2021] [Accepted: 07/19/2021] [Indexed: 12/31/2022]
Abstract
Peptides represent a promising class of biorecognition elements that can be coupled to electrochemical transducers. The benefits lie mainly in their stability and selectivity toward a target analyte. Furthermore, they can be synthesized rather easily and modified with specific functional groups, thus making them suitable for the development of novel architectures for biosensing platforms, as well as alternative labelling tools. Peptides have also been proposed as antibiofouling agents. Indeed, biofouling caused by the accumulation of biomolecules on electrode surfaces is one of the major issues and challenges to be addressed in the practical application of electrochemical biosensors. In this review, we summarise trends from the last three years in the design and development of electrochemical biosensors using synthetic peptides. The different roles of peptides in the design of electrochemical biosensors are described. The main procedures of selection and synthesis are discussed. Selected applications in clinical diagnostics are also described.
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Affiliation(s)
- Patrick Severin Sfragano
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy;
| | - Giulia Moro
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Venice, Italy; (G.M.); (F.P.)
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Venice, Italy; (G.M.); (F.P.)
| | - Ilaria Palchetti
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy;
- Correspondence:
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10
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Rizzo F, Polo F, Sojic N, Xu G. Editorial: Electrochemiluminescence: From Fundamentals to Applications. Front Chem 2021; 9:706465. [PMID: 34136469 PMCID: PMC8201993 DOI: 10.3389/fchem.2021.706465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 05/10/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Fabio Rizzo
- Institute of Chemical Sciences and Technologies "G. Natta" (SCITEC), National Research Council (CNR), Milan, Italy.,Center for Soft Nanoscience (SON), Westfälische Wilhelms-Universität Münster, Münster, Germany
| | | | - Neso Sojic
- University of Bordeaux, Bordeaux INP, CNRS, UMR 5255, Site ENSCBP, Pessac, France
| | - Guobao Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, China
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11
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Sánchez Peralta LF, Ortega Morán JF, Saratxaga CL, Pagador JB, Picón A, Mündermann L, Polo F, Sánchez Margallo FM. TOWARDS AN UNIFIED FRAMEWORK FOR VALIDATING DEEP LEARNING METHODS FOR COLORECTAL POLYPS: FIRST STEPS. Br J Surg 2021. [DOI: 10.1093/bjs/znab160.035] [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: 11/12/2022]
Abstract
Abstract
INTRODUCTION
Deep learning techniques have significantly contributed to the field of medical imaging analysis. In case of colorectal cancer, they have shown a great utility for increasing the adenoma detection rate at colonoscopy, but a common validation methodology is still missing. In this study, we present preliminary efforts towards the definition of a validation framework.
MATERIAL AND METHODS
Different models based on different backbones and encoder-decoder architectures have been trained with a publicly available dataset that contains white light and NBI colonoscopy videos, with 76 different lesions from colonoscopy procedures in 48 human patients. A computer aided detection (CADe) demonstrator has been implemented to show the performance of the models.
RESULTS
This CADe demonstrator shows the areas detected as polyp by overlapping the predicted mask on the endoscopic image. It allows selecting the video to be used, among those from the test set. Although it only present basic features such as play, pause and moving to the next video, it easily loads the model and allows for visualization of results. The demonstrator is accompanied by a set of metrics to be used depending on the aimed task: polyp detection, localization and segmentation.
CONCLUSIONS
The use of this CADe demonstrator, together with a publicly available dataset and predefined metrics will allow for an easier and more fair comparison of methods. Further work is still required to validate the proposed framework.
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Affiliation(s)
| | | | | | - J B Pagador
- Centro de Cirugía de Mínima Invasión Jesús Usón
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12
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Asbai Z, Bonfiglio A, Mercandelli P, Polo F, Mauro M. Cationic rhenium(I) complexes bearing a π-accepting pyridoannulated N-heterocyclic carbene ligand: Synthesis, photophysical, electrochemical and theoretical investigation. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Tartaggia S, Meneghello A, Bellotto O, Poetto AS, Zanchetta M, Posocco B, Bunka D, Polo F, Toffoli G. An SPR investigation into the therapeutic drug monitoring of the anticancer drug imatinib with selective aptamers operating in human plasma. Analyst 2021; 146:1714-1724. [DOI: 10.1039/d0an01860k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An ss-DNA aptamer-based biosensor was devised to detect the anticancer drug imatinib by means of surface plasmon resonance.
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Affiliation(s)
- Stefano Tartaggia
- Clinical and Experimental Pharmacology
- Centro di Riferimento Oncologico di Aviano (CRO) IRCCS
- 33081, Aviano
- Italy
| | - Anna Meneghello
- Clinical and Experimental Pharmacology
- Centro di Riferimento Oncologico di Aviano (CRO) IRCCS
- 33081, Aviano
- Italy
| | - Ottavia Bellotto
- Clinical and Experimental Pharmacology
- Centro di Riferimento Oncologico di Aviano (CRO) IRCCS
- 33081, Aviano
- Italy
- Department of Chemical and Pharmaceutical Sciences
| | - Ariana Soledad Poetto
- Clinical and Experimental Pharmacology
- Centro di Riferimento Oncologico di Aviano (CRO) IRCCS
- 33081, Aviano
- Italy
- Department of Pharmacological and Pharmaceutical Sciences
| | - Martina Zanchetta
- Clinical and Experimental Pharmacology
- Centro di Riferimento Oncologico di Aviano (CRO) IRCCS
- 33081, Aviano
- Italy
- Department of Chemical and Pharmaceutical Sciences
| | - Bianca Posocco
- Clinical and Experimental Pharmacology
- Centro di Riferimento Oncologico di Aviano (CRO) IRCCS
- 33081, Aviano
- Italy
| | | | - Federico Polo
- Clinical and Experimental Pharmacology
- Centro di Riferimento Oncologico di Aviano (CRO) IRCCS
- 33081, Aviano
- Italy
| | - Giuseppe Toffoli
- Clinical and Experimental Pharmacology
- Centro di Riferimento Oncologico di Aviano (CRO) IRCCS
- 33081, Aviano
- Italy
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14
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Stortini AM, Baldo MA, Moro G, Polo F, Moretto LM. Bio- and Biomimetic Receptors for Electrochemical Sensing of Heavy Metal Ions. Sensors (Basel) 2020; 20:E6800. [PMID: 33260737 PMCID: PMC7731017 DOI: 10.3390/s20236800] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 02/07/2023]
Abstract
Heavy metals ions (HMI), if not properly handled, used and disposed, are a hazard for the ecosystem and pose serious risks for human health. They are counted among the most common environmental pollutants, mainly originating from anthropogenic sources, such as agricultural, industrial and/or domestic effluents, atmospheric emissions, etc. To face this issue, it is necessary not only to determine the origin, distribution and the concentration of HMI but also to rapidly (possibly in real-time) monitor their concentration levels in situ. Therefore, portable, low-cost and high performing analytical tools are urgently needed. Even though in the last decades many analytical tools and methodologies have been designed to this aim, there are still several open challenges. Compared with the traditional analytical techniques, such as atomic absorption/emission spectroscopy, inductively coupled plasma mass spectrometry and/or high-performance liquid chromatography coupled with electrochemical or UV-VIS detectors, bio- and biomimetic electrochemical sensors provide high sensitivity, selectivity and rapid responses within portable and user-friendly devices. In this review, the advances in HMI sensing in the last five years (2016-2020) are addressed. Key examples of bio and biomimetic electrochemical, impedimetric and electrochemiluminescence-based sensors for Hg2+, Cu2+, Pb2+, Cd2+, Cr6+, Zn2+ and Tl+ are described and discussed.
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Affiliation(s)
| | | | | | | | - Ligia Maria Moretto
- Department of Molecular Science and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Venice, Italy; (A.M.S.); (M.A.B.); (G.M.); (F.P.)
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15
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Bonfiglio A, Pallova L, César V, Gourlaouen C, Bellemin‐Laponnaz S, Daniel C, Polo F, Mauro M. Phosphorescent Cationic Heterodinuclear Ir
III
/M
I
Complexes (M=Cu
I
, Au
I
) with a Hybrid Janus‐Type N‐Heterocyclic Carbene Bridge. Chemistry 2020; 26:11751-11766. [DOI: 10.1002/chem.202002767] [Citation(s) in RCA: 3] [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] [Received: 06/08/2020] [Revised: 07/04/2020] [Indexed: 01/13/2023]
Affiliation(s)
- Anna Bonfiglio
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR7504 Université de Strasbourg, CNRS 23 rue du Loess 67000 Strasbourg France
| | - Lenka Pallova
- LCC-CNRS UPR8241 Université de Toulouse, CNRS 31077 Toulouse cedex 4 France
| | - Vincent César
- LCC-CNRS UPR8241 Université de Toulouse, CNRS 31077 Toulouse cedex 4 France
| | - Christophe Gourlaouen
- Laboratoire de Chimie Quantique Institut de Chimie de Strasbourg UMR7177 Université de Strasbourg-CNRS 4 Rue Blaise Pascal 67000 Strasbourg France
| | - Stéphane Bellemin‐Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR7504 Université de Strasbourg, CNRS 23 rue du Loess 67000 Strasbourg France
| | - Chantal Daniel
- Laboratoire de Chimie Quantique Institut de Chimie de Strasbourg UMR7177 Université de Strasbourg-CNRS 4 Rue Blaise Pascal 67000 Strasbourg France
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems Ca' Foscari University of Venice Via Torino 155 30172 Venezia Italy
| | - Matteo Mauro
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR7504 Université de Strasbourg, CNRS 23 rue du Loess 67000 Strasbourg France
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16
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Bonfiglio A, Pallova L, César V, Gourlaouen C, Bellemin‐Laponnaz S, Daniel C, Polo F, Mauro M. Cover Feature: Phosphorescent Cationic Heterodinuclear Ir
III
/M
I
Complexes (M=Cu
I
, Au
I
) with a Hybrid Janus‐Type N‐Heterocyclic Carbene Bridge (Chem. Eur. J. 51/2020). Chemistry 2020. [DOI: 10.1002/chem.202003724] [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: 11/08/2022]
Affiliation(s)
- Anna Bonfiglio
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR7504 Université de Strasbourg, CNRS 23 rue du Loess 67000 Strasbourg France
| | - Lenka Pallova
- LCC-CNRS UPR8241 Université de Toulouse, CNRS 31077 Toulouse cedex 4 France
| | - Vincent César
- LCC-CNRS UPR8241 Université de Toulouse, CNRS 31077 Toulouse cedex 4 France
| | - Christophe Gourlaouen
- Laboratoire de Chimie Quantique Institut de Chimie de Strasbourg UMR7177 Université de Strasbourg-CNRS 4 Rue Blaise Pascal 67000 Strasbourg France
| | - Stéphane Bellemin‐Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR7504 Université de Strasbourg, CNRS 23 rue du Loess 67000 Strasbourg France
| | - Chantal Daniel
- Laboratoire de Chimie Quantique Institut de Chimie de Strasbourg UMR7177 Université de Strasbourg-CNRS 4 Rue Blaise Pascal 67000 Strasbourg France
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems Ca' Foscari University of Venice Via Torino 155 30172 Venezia Italy
| | - Matteo Mauro
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR7504 Université de Strasbourg, CNRS 23 rue du Loess 67000 Strasbourg France
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17
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Voci S, Verlhac JB, Polo F, Clermont G, Daniel J, Castet F, Blanchard-Desce M, Sojic N. Photophysics, Electrochemistry and Efficient Electrochemiluminescence of Trigonal Truxene-Core Dyes. Chemistry 2020; 26:8407-8416. [PMID: 32430923 DOI: 10.1002/chem.202000474] [Citation(s) in RCA: 3] [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: 01/28/2020] [Revised: 04/26/2020] [Indexed: 01/08/2023]
Abstract
We synthesized and characterized a series of dyes built from a spirofluorene or truxene core. The quadrupolar spirofluorene system is the initial building unit for the design and preparation of more complex star-shaped dyes consisting of a truxene core bearing three di- or triphenylamine moieties with or without a thiophene connector. Their photophysical, electrochemical, and electrochemiluminescence (ECL) properties were first investigated in solution. Structure/activity relationships were derived and rationalized by comparing the quadrupolar system and trigonal truxene-core derivatives using computational studies. The photophysical and redox characteristics are drastically tuned by the introduction of a thiophene bridge and electron-donor substituents at their terminal branches. These comparative studies show the essential role of the stability of both radical cations and anions to obtain efficient ECL dyes. The stabilization of the radicals is directly related to the charge delocalization due to the π-conjugation by the thiophene bridge. The brightest ECL is achieved by annihilation and coreactant (benzoyl peroxide) pathways with the blue-emitting truxene dye, which is 2- and 4.5-times greater than that of the quadrupolar compound and reference [Ru(bpy)3 ]2+ emitter, respectively. Such an extensive study on these extended π-conjugated molecules presenting different core structures may guide the design and synthesis of new ECL dyes with a strong efficiency.
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Affiliation(s)
- Silvia Voci
- Bordeaux INP, ISM, UMR CNRS 5255, University of Bordeaux, 33607, Pessac, France
| | | | - Federico Polo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy
| | - Guillaume Clermont
- Bordeaux INP, ISM, UMR CNRS 5255, University of Bordeaux, 33607, Pessac, France
| | - Jonathan Daniel
- Bordeaux INP, ISM, UMR CNRS 5255, University of Bordeaux, 33607, Pessac, France
| | - Frédéric Castet
- Bordeaux INP, ISM, UMR CNRS 5255, University of Bordeaux, 33607, Pessac, France
| | | | - Neso Sojic
- Bordeaux INP, ISM, UMR CNRS 5255, University of Bordeaux, 33607, Pessac, France
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18
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Bonfiglio A, Magra K, Cebrián C, Polo F, Gros PC, Mercandelli P, Mauro M. Red-emitting neutral rhenium(i) complexes bearing a pyridyl pyridoannelated N-heterocyclic carbene. Dalton Trans 2020; 49:3102-3111. [DOI: 10.1039/c9dt04890a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Two novel neutral rhenium(i) tricarbonyl complexes bearing a pyridoannelated N-heterocyclic carbene are synthetized and fully characterized, which display red photoluminescence arising from a triplet excited state with ligand centered character.
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Affiliation(s)
- Anna Bonfiglio
- Université de Strasbourg
- CNRS
- Institut de Physique et Chimie des Matériaux de Strasbourg
- UMR 7504
- 67034 Strasbourg
| | - Kévin Magra
- Université de Lorraine
- CNRS
- L2CM
- F-57000 Metz
- France
| | | | - Federico Polo
- Ca’ Foscari University of Venice
- Department of Molecular Sciences and Nanosystems
- 30172 Venezia
- Italy
| | | | | | - Matteo Mauro
- Université de Strasbourg
- CNRS
- Institut de Physique et Chimie des Matériaux de Strasbourg
- UMR 7504
- 67034 Strasbourg
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19
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Dinel M, Tartaggia S, Wallace GQ, Boudreau D, Masson J, Polo F. The Fundamentals of Real‐Time Surface Plasmon Resonance/Electrogenerated Chemiluminescence. Angew Chem Int Ed Engl 2019; 58:18202-18206. [DOI: 10.1002/anie.201909806] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/30/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Marie‐Pier Dinel
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Stefano Tartaggia
- Farmacologia Sperimentale e ClinicaIRCCS Centro di Riferimento Oncologico Via Franco Gallini 2 33081 Aviano Italy
| | - Gregory Q. Wallace
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Denis Boudreau
- Department of Chemistry and Centre for Optics, Photonics and Lasers (COPL)Université Laval 1045, av. de la Médecine Québec Qc G1V 0A6 Canada
| | - Jean‐Francois Masson
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Federico Polo
- Department of Molecular Sciences and NanosystemsCa' Foscari University of Venice Via Torino 155B 30172 Venezia Italy
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20
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Dinel M, Tartaggia S, Wallace GQ, Boudreau D, Masson J, Polo F. The Fundamentals of Real‐Time Surface Plasmon Resonance/Electrogenerated Chemiluminescence. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909806] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Marie‐Pier Dinel
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Stefano Tartaggia
- Farmacologia Sperimentale e ClinicaIRCCS Centro di Riferimento Oncologico Via Franco Gallini 2 33081 Aviano Italy
| | - Gregory Q. Wallace
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Denis Boudreau
- Department of Chemistry and Centre for Optics, Photonics and Lasers (COPL)Université Laval 1045, av. de la Médecine Québec Qc G1V 0A6 Canada
| | - Jean‐Francois Masson
- Department of ChemistryUniversité de Montréal C.P. 6128 Succ. Centre-Ville Montreal Qc H3C 3J7 Canada
| | - Federico Polo
- Department of Molecular Sciences and NanosystemsCa' Foscari University of Venice Via Torino 155B 30172 Venezia Italy
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21
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Meneghello A, Tartaggia S, Alvau MD, Polo F, Toffoli G. Biosensing Technologies for Therapeutic Drug Monitoring. Curr Med Chem 2018; 25:4354-4377. [DOI: 10.2174/0929867324666170720101736] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 05/05/2017] [Accepted: 05/05/2017] [Indexed: 11/22/2022]
Affiliation(s)
- Anna Meneghello
- Experimental and Clinical Pharmacology Division, CRO Aviano - National Cancer Institute, Via Franco Gallini 2, 33081 Aviano (PN), Italy
| | - Stefano Tartaggia
- Experimental and Clinical Pharmacology Division, CRO Aviano - National Cancer Institute, Via Franco Gallini 2, 33081 Aviano (PN), Italy
| | - Maria Domenica Alvau
- Experimental and Clinical Pharmacology Division, CRO Aviano - National Cancer Institute, Via Franco Gallini 2, 33081 Aviano (PN), Italy
| | - Federico Polo
- Experimental and Clinical Pharmacology Division, CRO Aviano - National Cancer Institute, Via Franco Gallini 2, 33081 Aviano (PN), Italy
| | - Giuseppe Toffoli
- Experimental and Clinical Pharmacology Division, CRO Aviano - National Cancer Institute, Via Franco Gallini 2, 33081 Aviano (PN), Italy
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22
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Bonazza G, Tartaggia S, Toffoli G, Polo F, Daniele S. Voltammetric behaviour of the anticancer drug irinotecan and its metabolites in acetonitrile. Implications for electrochemical therapeutic drug monitoring. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.09.094] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Parra-Medina R, Lopez-Correa P, Gutierrez V, Polo F. Colonic adenosquamous carcinoma and mucinous adenocarcinoma with microsatellite instability. Malays J Pathol 2018; 40:199-202. [PMID: 30173239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A 43-year-old man presented with two-month history of fatigue, weakness, paleness, rectal bleeding, sweating, and weight loss of 10 kg in the past one month. A complete blood count revealed anaemia. The patient underwent a right hemicolectomy. The microscopic examination revealed an adenosquamous carcinoma associated with a mucinous adenocarcinoma in a patient with microsatellite instability due to loss of MLH1 and PMS2 expression and retention of MSH2 and MSH6 expression in both the squamous and glandular components. We also observed an atypical immunohistochemical phenotype in the adenocarcinoma component showing CK7 expression and reduced CK20 and CDX2 expression.
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Affiliation(s)
- R Parra-Medina
- Hospital Infantil de San José, Fundación Universitaria de Ciencias de la Salud. Department of Pathology, Bogotá, Colombia.
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24
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Tartaggia S, Alvau MD, Meneghello A, Casetta B, Polo F, Toffoli G. Practical fluorimetric assay for the detection of anticancer drug SN-38 in human plasma. J Pharm Biomed Anal 2018; 159:73-81. [PMID: 29980022 DOI: 10.1016/j.jpba.2018.06.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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: 03/04/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 11/19/2022]
Abstract
The implementation of therapeutic drug monitoring in the routine clinical practice in oncology is mainly limited by the lack of therapeutic indexes for the majority of the anticancer drugs, and by the absence of suitable analytical tools, which can accurately quantify in real time the concentration of the administered drugs and their relevant metabolites in biological fluids. In this work, a simple and efficient fluorimetric determination of SN-38, the active metabolite of the anticancer drug irinotecan, was developed and applied to human plasma samples. The intrinsic fluorescence of SN-38 allowed its quantification in the range 10-500 ng mL-1 with a LOQ of 5.0 ng mL-1 and a LOD of 1.5 ng mL-1. Low interferences due to main metabolites of irinotecan and comedications, commonly associated with administration of irinotecan, were observed. A validation study, according to FDA and EMA guidelines for bioanalytical method validation, was carried out and, finally, blind samples were analyzed in parallel with a HPLC-MS method obtaining an excellent agreement between the two techniques.
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Affiliation(s)
- Stefano Tartaggia
- Experimental and Clinical Pharmacology Unit, National Cancer Institute - Centro di Riferimento Oncologico, Via Franco Gallini 2, I-33081, Aviano, Italy.
| | - Maria Domenica Alvau
- Experimental and Clinical Pharmacology Unit, National Cancer Institute - Centro di Riferimento Oncologico, Via Franco Gallini 2, I-33081, Aviano, Italy
| | - Anna Meneghello
- Experimental and Clinical Pharmacology Unit, National Cancer Institute - Centro di Riferimento Oncologico, Via Franco Gallini 2, I-33081, Aviano, Italy
| | - Bruno Casetta
- Experimental and Clinical Pharmacology Unit, National Cancer Institute - Centro di Riferimento Oncologico, Via Franco Gallini 2, I-33081, Aviano, Italy
| | - Federico Polo
- Experimental and Clinical Pharmacology Unit, National Cancer Institute - Centro di Riferimento Oncologico, Via Franco Gallini 2, I-33081, Aviano, Italy.
| | - Giuseppe Toffoli
- Experimental and Clinical Pharmacology Unit, National Cancer Institute - Centro di Riferimento Oncologico, Via Franco Gallini 2, I-33081, Aviano, Italy
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25
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Alvau MD, Tartaggia S, Meneghello A, Casetta B, Calia G, Serra PA, Polo F, Toffoli G. Enzyme-Based Electrochemical Biosensor for Therapeutic Drug Monitoring of Anticancer Drug Irinotecan. Anal Chem 2018; 90:6012-6019. [PMID: 29658266 DOI: 10.1021/acs.analchem.7b04357] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Therapeutic drug monitoring (TDM) is the clinical practice of measuring pharmaceutical drug concentrations in patients' biofluids at designated intervals, thus allowing a close and timely control of their dosage. To date, TDM in oncology can only be performed by trained personnel in centralized laboratories and core facilities employing conventional analytical techniques (e.g., MS). CPT-11 is an antineoplastic drug that inhibits topoisomerase type I, causing cell death, and is widely used in the treatment of colorectal cancer. CPT-11 was also found to directly inhibit acetylcholine esterase (AChE), an enzyme involved in neuromuscular junction. In this work, we describe an enzymatic biosensor, based on AChE and choline oxidase (ChOx), which can quantify CPT-11. ACh (acetylcholine) substrate is converted to choline, which is subsequently metabolized by ChOx to give betaine aldehyde and hydrogen peroxide. The latter one is then oxidized at a suitably polarized platinum electrode, providing a current transient proportional to the amount of ACh. Such an enzymatic process is hampered by CPT-11. The biosensor showed a ∼60% maximal inhibition toward AChE activity in the clinically relevant concentration range 10-10 000 ng/mL of CPT-11 in both simple (phosphate buffer) and complex (fetal bovine serum) matrixes, while its metabolites showed negligible effects. These findings could open new routes toward a real-time TDM in oncology, thus improving the therapeutic treatments and lowering the related costs.
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Affiliation(s)
- Maria Domenica Alvau
- Experimental and Clinical Pharmacology Division , CRO Aviano - National Cancer Institute , Aviano , Italy
| | - Stefano Tartaggia
- Experimental and Clinical Pharmacology Division , CRO Aviano - National Cancer Institute , Aviano , Italy
| | - Anna Meneghello
- Experimental and Clinical Pharmacology Division , CRO Aviano - National Cancer Institute , Aviano , Italy
| | - Bruno Casetta
- Experimental and Clinical Pharmacology Division , CRO Aviano - National Cancer Institute , Aviano , Italy
| | - Giammario Calia
- Department of Clinical and Experimental Medicine Section of Pharmacology , University of Sassari , Viale San Pietro 43/b , Sassari , Italy
| | - Pier Andrea Serra
- Department of Clinical and Experimental Medicine Section of Pharmacology , University of Sassari , Viale San Pietro 43/b , Sassari , Italy
| | - Federico Polo
- Experimental and Clinical Pharmacology Division , CRO Aviano - National Cancer Institute , Aviano , Italy
| | - Giuseppe Toffoli
- Experimental and Clinical Pharmacology Division , CRO Aviano - National Cancer Institute , Aviano , Italy
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26
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Kudruk S, Villani E, Polo F, Lamping S, Körsgen M, Arlinghaus HF, Paolucci F, Ravoo BJ, Valenti G, Rizzo F. Solid state electrochemiluminescence from homogeneous and patterned monolayers of bifunctional spirobifluorene. Chem Commun (Camb) 2018; 54:4999-5002. [DOI: 10.1039/c8cc02066c] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Electrochemiluminescence (ECL) from self-assembled monolayers of a spirobifluorene dye covalently linked to a transparent ITO surface is reported.
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Affiliation(s)
- Sergej Kudruk
- Organic Chemistry Institute and CeNTech
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Elena Villani
- Department of Chemistry “G. Ciamician”
- University of Bologna
- 40126 Bologna
- Italy
| | - Federico Polo
- National Cancer Institute-CRO Aviano
- 33081 Aviano
- Italy
| | - Sebastian Lamping
- Organic Chemistry Institute and CeNTech
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Martin Körsgen
- Physics Institute
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | | | - Francesco Paolucci
- Department of Chemistry “G. Ciamician”
- University of Bologna
- 40126 Bologna
- Italy
| | - Bart Jan Ravoo
- Organic Chemistry Institute and CeNTech
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Giovanni Valenti
- Department of Chemistry “G. Ciamician”
- University of Bologna
- 40126 Bologna
- Italy
| | - Fabio Rizzo
- Organic Chemistry Institute and CeNTech
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
- Institute of Molecular Science and Technologies (ISTM)
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27
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Guryanov I, Polo F, Ubyvovk EV, Korzhikova-Vlakh E, Tennikova T, Rad AT, Nieh MP, Maran F. Polylysine-grafted Au 144 nanoclusters: birth and growth of a healthy surface-plasmon-resonance-like band. Chem Sci 2017; 8:3228-3238. [PMID: 28507699 PMCID: PMC5414598 DOI: 10.1039/c6sc05187a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 11/25/2016] [Accepted: 02/01/2017] [Indexed: 12/13/2022] Open
Abstract
Poly(amino acid)-coated gold nanoparticles hold promise in biomedical applications, particularly because they combine the unique physicochemical properties of the gold core, excellent biocompatibility, and easy functionalization of the poly(amino acid)-capping shell. Here we report a novel method for the preparation of robust hybrid core-shell nanosystems consisting of a Au144 cluster and a densely grafted polylysine layer. Linear polylysine chains were grown by direct N-carboxyanhydride (NCA) polymerization onto ligands capping the gold nanocluster. The density of the polylysine chains and the thickness of the polymer layer strongly depend on the amount and concentration of the NCA monomer and the initiator. The optical spectra of the so-obtained core-shell nanosystems show a strong surface plasmon resonance (SPR)-like band at 531 nm. In fact, despite maintenance of the gold cluster size and the absence of interparticle aggregation, the polylysine-capped clusters behave as if they have a diameter nearly 4 times larger. To the best of our knowledge, this is the first observation of the growth of a fully developed, very stable SPR-like band for a gold nanocluster of such dimensions. The robust polylysine protective shell makes the nanoparticles very stable under conditions of chemical etching, in the presence of glutathione, and at different pH values, without gold core deshielding or alteration of the SPR-like band. This polymerization method can conceivably be extended to prepare core-shell nanosystems based on other mono- or co-poly(amino acids).
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Affiliation(s)
- Ivan Guryanov
- Institute of Chemistry , St. Petersburg State University , 26 Universitetskij Pr., 198504 Petrodvorets , St. Petersburg , Russia .
| | - Federico Polo
- Department of Chemistry , University of Padova , Via Marzolo 1 , 35131 Padova , Italy .
| | - Evgeniy V Ubyvovk
- Department of Physics , St. Petersburg State University , 3 Ulyanovskaya, 198504 Petrodvorets , St. Petersburg , Russia
| | - Evgenia Korzhikova-Vlakh
- Institute of Chemistry , St. Petersburg State University , 26 Universitetskij Pr., 198504 Petrodvorets , St. Petersburg , Russia .
| | - Tatiana Tennikova
- Institute of Chemistry , St. Petersburg State University , 26 Universitetskij Pr., 198504 Petrodvorets , St. Petersburg , Russia .
| | - Armin T Rad
- Department of Biomedical Engineering , University of Connecticut , 260 Glenbrook Road , Storrs , Connecticut 06269 , USA
| | - Mu-Ping Nieh
- Polymer Program , Institute of Materials Science , University of Connecticut , 97 N. Eagleville Rd , Storrs , Connecticut 06269 , USA
- Department of Chemical & Biomolecular Engineering , University of Connecticut , 191 Auditorium Rd , Storrs , Connecticut 06269 , USA
| | - Flavio Maran
- Department of Chemistry , University of Padova , Via Marzolo 1 , 35131 Padova , Italy .
- Department of Chemistry , University of Connecticut , 55 North Eagleville Road , Storrs , 06269 Connecticut , USA
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Rizzo F, Polo F, Bottaro G, Fantacci S, Antonello S, Armelao L, Quici S, Maran F. From Blue to Green: Fine-Tuning of Photoluminescence and Electrochemiluminescence in Bifunctional Organic Dyes. J Am Chem Soc 2017; 139:2060-2069. [DOI: 10.1021/jacs.6b12247] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Fabio Rizzo
- Institute
of Molecular
Science and Technologies (ISTM), National Research Council (CNR), PST-CNR, via Fantoli
16/15, 20138 Milano, Italy
- Institute of Molecular
Science and Technologies (ISTM), National Research Council (CNR),
and INSTM, c/o Department of Chemistry, University of Milano, via Golgi 19, 20133 Milano, Italy
| | - Federico Polo
- Department
of Chemistry, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Gregorio Bottaro
- Institute
of Condensed
Matter Chemistry and Technologies for Energy (ICMATE), National Research
Council (CNR), c/o Department of Chemistry, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Simona Fantacci
- Institute of Molecular
Science and Technologies (ISTM), National Research Council (CNR),
c/o Department of Chemistry, University of Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
| | - Sabrina Antonello
- Department
of Chemistry, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Lidia Armelao
- Department
of Chemistry, University of Padova, via Marzolo 1, 35131 Padova, Italy
- Institute
of Condensed
Matter Chemistry and Technologies for Energy (ICMATE), National Research
Council (CNR), c/o Department of Chemistry, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Silvio Quici
- Institute of Molecular
Science and Technologies (ISTM), National Research Council (CNR),
and INSTM, c/o Department of Chemistry, University of Milano, via Golgi 19, 20133 Milano, Italy
| | - Flavio Maran
- Department
of Chemistry, University of Padova, via Marzolo 1, 35131 Padova, Italy
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Gobbo P, Antonello S, Guryanov I, Polo F, Soldà A, Zen F, Maran F. Dipole Moment Effect on the Electrochemical Desorption of Self-Assembled Monolayers of 310
-Helicogenic Peptides on Gold. ChemElectroChem 2016. [DOI: 10.1002/celc.201600689] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pierangelo Gobbo
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Sabrina Antonello
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Ivan Guryanov
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- Institute of Chemistry; St. Petersburg State University, 26 Universitetskij Pr.; 198504 Saint-Petersburg Russia
| | - Federico Polo
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- National Cancer Institute-Centro di Riferimento Oncologico; Via Franco Gallini 2 33081 Aviano Italy
| | - Alice Soldà
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- Department of Chemistry; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Federico Zen
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- School of Chemistry; Trinity College Dublin, College Green; Dublin 2 Ireland
| | - Flavio Maran
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
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Gobbo P, Antonello S, Guryanov I, Polo F, Soldà A, Zen F, Maran F. Cover Picture: Dipole Moment Effect on the Electrochemical Desorption of Self-Assembled Monolayers of 310
-Helicogenic Peptides on Gold (ChemElectroChem 12/2016). ChemElectroChem 2016. [DOI: 10.1002/celc.201600690] [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: 11/08/2022]
Affiliation(s)
- Pierangelo Gobbo
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Sabrina Antonello
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Ivan Guryanov
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- Institute of Chemistry; St. Petersburg State University, 26 Universitetskij Pr.; 198504 Saint-Petersburg Russia
| | - Federico Polo
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- National Cancer Institute-Centro di Riferimento Oncologico; Via Franco Gallini 2 33081 Aviano Italy
| | - Alice Soldà
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- Department of Chemistry; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Federico Zen
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- School of Chemistry; Trinity College Dublin, College Green; Dublin 2 Ireland
| | - Flavio Maran
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
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Gobbo P, Antonello S, Guryanov I, Polo F, Soldà A, Zen F, Maran F. Dipole Moment Effect on the Electrochemical Desorption of Self-Assembled Monolayers of 310-Helicogenic Peptides on Gold. ChemElectroChem 2016. [DOI: 10.1002/celc.201600573] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pierangelo Gobbo
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Sabrina Antonello
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
| | - Ivan Guryanov
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- Institute of Chemistry; St. Petersburg State University, 26 Universitetskij Pr.; 198504 Saint-Petersburg Russia
| | - Federico Polo
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- National Cancer Institute-Centro di Riferimento Oncologico; Via Franco Gallini 2 33081 Aviano Italy
| | - Alice Soldà
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- Department of Chemistry; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Federico Zen
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
- School of Chemistry; Trinity College Dublin, College Green; Dublin 2 Ireland
| | - Flavio Maran
- Department of Chemistry; University of Padova; Via Marzolo 1 35131 Padova Italy
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Fernandez-Hernandez JM, Longhi E, Cysewski R, Polo F, Josel HP, De Cola L. Photophysics and Electrochemiluminescence of Bright Cyclometalated Ir(III) Complexes in Aqueous Solutions. Anal Chem 2016; 88:4174-8. [DOI: 10.1021/acs.analchem.6b00312] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jesus M. Fernandez-Hernandez
- Westfälische Wilhelms-Universität, Center for
Nanotechnology (CeNTech), Heisenbergstrasse 11, 48149 Münster, Germany
| | - Elena Longhi
- Westfälische Wilhelms-Universität, Center for
Nanotechnology (CeNTech), Heisenbergstrasse 11, 48149 Münster, Germany
| | - Robert Cysewski
- Roche Diagnostics GmbH, Nonnenwald
2, 82372 Penzberg, Germany
| | - Federico Polo
- Westfälische Wilhelms-Universität, Center for
Nanotechnology (CeNTech), Heisenbergstrasse 11, 48149 Münster, Germany
| | | | - Luisa De Cola
- Westfälische Wilhelms-Universität, Center for
Nanotechnology (CeNTech), Heisenbergstrasse 11, 48149 Münster, Germany
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Garcia E, Leon M, Polo F. Multifactorial Ethiopathogenic In Eating Disorders. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.1552] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Eating Disorders is a heterogeneous group of syndromes which includes many factors in their develop. The three main syndromes, AN, BN and EDNOS has been defined in last DSM as independent entities. However is well known that a group of patients may change its presentation along time, so also been at first diagnosed of AN, lately will fulfil criteria for BN or EDNOS.In the other hand, if we compare two patients with the same syndrome, as BN, or AN…We may easily find big differences in personality, stressors…and in some cases the only common factor is the clinical presentation.Behind all of this is the fact that syndromic classification drives to empiric treatments that are far the most validated.But although there is a well known evolution in this disorders, with a not so bad income as one could think initially (in some cases one third could recover without treatment), what may we do with those patients that are resistant for empiric treatments?And it is our opinion that a deeper knowledge of all the factors that contribute to the syndrome or its presentation, as well as those related to treatments results, should be taken into account.We have reviewed all knowledge about these issues and we have completed it with our clinical practise using a 50 patients data base, here we will show our results, that are basically that even the same factors interact in different ways in each patient, so it is not just the ingredients but the recipe.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Garcia E, Leon M, Polo F, Martinez R. Brief psychotherapy in eating disorders. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.2290] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
First time we began to work with eating disorders, we used to hear the chronic course of the illness and the long-term treatment that our patients would need. When you have a team trained in brief psychotherapy, but not in this specific area, it sounds as just the opposite you try to reach with your patients. National guidelines however are full of psycho-educational and cognitive-conduct treatment's models, without any other validated kind of treatment. However, it was our experience that solution focused or problem focused therapy were also two clinical effective approaches to many psychiatric problems. In fact, we had a mature consult, in which as far as two thirds of patients had become, some way chronic. Problem was, as far as we can imagine, if that was a disease's effect or a lack of a deeper intervention, which were wider than those classic. So, we classified our patients in resistant or not resistant, and doing so we add brief therapy to the first group, reevaluating every week each intervention and the course of the illness. By doing so, we found that chronicity was, in same cases, just the result of limited treatments. Here we have analysed some chronic patients with a bad course and the alternatives that let them to recover.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Mydlak M, Yang CH, Polo F, Galstyan A, Daniliuc CG, Felicetti M, Leonhardt J, Strassert CA, De Cola L. Sterically Hindered Luminescent PtII-Phosphite Complexes for Electroluminescent Devices. Chemistry 2015; 21:5161-72. [DOI: 10.1002/chem.201405839] [Citation(s) in RCA: 21] [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: 10/27/2014] [Indexed: 11/10/2022]
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Bizzarri C, Strabler C, Prock J, Trettenbrein B, Ruggenthaler M, Yang CH, Polo F, Iordache A, Brüggeller P, Cola LD. Luminescent Dinuclear Cu(I) Complexes Containing Rigid Tetraphosphine Ligands. Inorg Chem 2014; 53:10944-51. [DOI: 10.1021/ic5012204] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Claudia Bizzarri
- Physikalisches
Institut and CeNTech, University of Münster, Heisenbergstrasse 11, D-48149, Münster, Germany
| | - Christof Strabler
- Institute
of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80−82, A-6020 Innsbruck, Austria
| | - Johannes Prock
- Institute
of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80−82, A-6020 Innsbruck, Austria
| | - Barbara Trettenbrein
- Institute
of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80−82, A-6020 Innsbruck, Austria
| | - Martin Ruggenthaler
- Institute
of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80−82, A-6020 Innsbruck, Austria
| | - Cheng-Han Yang
- Physikalisches
Institut and CeNTech, University of Münster, Heisenbergstrasse 11, D-48149, Münster, Germany
| | - Federico Polo
- Physikalisches
Institut and CeNTech, University of Münster, Heisenbergstrasse 11, D-48149, Münster, Germany
| | - Adriana Iordache
- Physikalisches
Institut and CeNTech, University of Münster, Heisenbergstrasse 11, D-48149, Münster, Germany
| | - Peter Brüggeller
- Institute
of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80−82, A-6020 Innsbruck, Austria
| | - Luisa De Cola
- Physikalisches
Institut and CeNTech, University of Münster, Heisenbergstrasse 11, D-48149, Münster, Germany
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Becucci L, Guidelli R, Polo F, Maran F. Interaction of mixed-ligand monolayer-protected Au₁₄₄ clusters with biomimetic membranes as a function of the transmembrane potential. Langmuir 2014; 30:8141-8151. [PMID: 24949655 DOI: 10.1021/la500909j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Understanding the interaction of nanoparticles with cell membranes is a high-priority research area for possible biomedical applications. We describe our findings concerning the interaction of Au144 monolayer-protected clusters (MPCs) with biomimetic membranes and their permeabilizing effect as a function of the transmembrane potential. We synthesized Au144(SCH2CH2Ph)60 and modified the capping monolayer with 8-mercaptooctanoic acid (Au144OctA) or thiolated trichogin (Au144TCG), a channel-forming peptide. The interactions of these MPCs with mercury-supported lipid mono- and bilayers were studied with a combination of electrochemical techniques specifically sensitive to changes in the properties of biomimetic membranes and/or charge-transfer phenomena. Permeabilization effects were evaluated through the influence of MPC uptake on the reduction of cadmium(II) ions. The nature and properties of the Au144 capping molecules play a crucial role in controlling how MPCs interact with membranes. The native MPC causes a small effect, whereas both Au144OctA and Au144TCG interact significantly with the lipid monolayer and show electroactivity. Whereas Au144OctA penetrates the membrane, Au144TCG pierces the membrane with its peptide appendage while remaining outside of it. Both clusters promote Cd(2+) reduction but with apparently different mechanisms. Because of the different way that they interact with the membrane, Au144OctA is more effective in Cd(2+) reduction when interacting with the lipid bilayer and Au144TCG performs particularly well when piercing the lipid monolayer.
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Affiliation(s)
- Lucia Becucci
- Department of Chemistry, Florence University , via della Lastruccia 3, 50019 Sesto Fiorentino (Firenze), Italy
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39
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Fernández-Hernández JM, Beltrán JI, Lemaur V, Gálvez-López MD, Chien CH, Polo F, Orselli E, Fröhlich R, Cornil J, De Cola L. Iridium(III) Emitters Based on 1,4-Disubstituted-1H-1,2,3-triazoles as Cyclometalating Ligand: Synthesis, Characterization, and Electroluminescent Devices. Inorg Chem 2013; 52:1812-24. [DOI: 10.1021/ic3018419] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Jesús M. Fernández-Hernández
- Physikalisches Institut, Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Heisenbergstrasse 11, 48149 Münster, Germany
| | - Juan I. Beltrán
- Service de Chimie des Matériaux
Nouveaux, Université de Mons, Place
du Parc 20, 7000 Mons, Belgium
| | - Vincent Lemaur
- Service de Chimie des Matériaux
Nouveaux, Université de Mons, Place
du Parc 20, 7000 Mons, Belgium
| | - Maria-Dolores Gálvez-López
- Physikalisches Institut, Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Heisenbergstrasse 11, 48149 Münster, Germany
| | - Chen-Han Chien
- Physikalisches Institut, Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Heisenbergstrasse 11, 48149 Münster, Germany
| | - Federico Polo
- Physikalisches Institut, Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Heisenbergstrasse 11, 48149 Münster, Germany
| | - Enrico Orselli
- Solvay S. A., Rue de Ransbeek 310, 1120
Brussels, Belgium
| | - Roland Fröhlich
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster,
Germany
| | - Jérôme Cornil
- Service de Chimie des Matériaux
Nouveaux, Université de Mons, Place
du Parc 20, 7000 Mons, Belgium
| | - Luisa De Cola
- Physikalisches Institut, Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Heisenbergstrasse 11, 48149 Münster, Germany
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40
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Polo F, Rizzo F, Veiga-Gutierrez M, De Cola L, Quici S. Efficient Greenish Blue Electrochemiluminescence from Fluorene and Spirobifluorene Derivatives. J Am Chem Soc 2012; 134:15402-9. [DOI: 10.1021/ja3054018] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Federico Polo
- Physikalisches Institut, Westfälische Wilhelms-Universität, Heisenbergstrasse
11, D-48149 Münster, Germany
| | - Fabio Rizzo
- Istituto di Scienze e Tecnologie Molecolari (ISTM), CNR, Via Golgi 19, I-20133
Milano, Italy
- Polo Scientifico Tecnologico (PST), CNR, Via Fantoli 16/15, I-20138 Milano,
Italy
| | - Manoel Veiga-Gutierrez
- Physikalisches Institut, Westfälische Wilhelms-Universität, Heisenbergstrasse
11, D-48149 Münster, Germany
| | - Luisa De Cola
- Physikalisches Institut, Westfälische Wilhelms-Universität, Heisenbergstrasse
11, D-48149 Münster, Germany
| | - Silvio Quici
- Istituto di Scienze e Tecnologie Molecolari (ISTM), CNR, Via Golgi 19, I-20133
Milano, Italy
- Polo Scientifico Tecnologico (PST), CNR, Via Fantoli 16/15, I-20138 Milano,
Italy
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Abstract
Au₂₅L₁₈ (L = S(CH₂)₂Ph) clusters were prepared and characterized. The resulting monodisperse clusters were reacted with bis(pentafluorobenzoyl) peroxide in dichloromethane to form Au₂₅L₁₈⁺ quantitatively. The kinetics and thermodynamics of the corresponding electron transfer (ET) reactions were characterized via electrochemistry and thermochemical calculations. Au₂₅L₁₈⁺ was used in homogeneous redox catalysis experiments with a series of sym-substituted benzoyl peroxides, including the above peroxide, bis(para-cyanobenzoyl) peroxide, dibenzoyl peroxide, and bis(para-methoxybenzoyl) peroxide. Peroxide dissociative ET was catalyzed using both the Au₂₅L₁₈/Au₂₅L₁₈⁻ and the Au₂₅L₁₈⁺/Au₂₅L₁₈ redox couples as redox mediators. Simulation of the CV curves led to determination of the ET rate constant (k(ET)) values for concerted dissociative ET to the peroxides. The ET free energy ΔG° could be estimated for all donor-acceptor combinations, leading to observation of a nice activation-driving force (log k(ET)vs.ΔG°) relationship. Comparison with the k(ET) obtained using a ferrocene-type donor with a formal potential similar to that of Au₂₅L₁₈/Au₂₅L₁₈⁻ showed that the presence of the capping monolayer affects the ET rate rather significantly, which is attributed to the intrinsic nonadiabaticity of peroxide acceptors.
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Affiliation(s)
- Sabrina Antonello
- Department of Chemistry, University of Padova, via Marzolo 1, 35131 Padova, Italy.
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Visentin R, Menin M, Rossin R, Polo F, Giron MC, Mazzi U, Nicolini M. N-[N-[3-(diphenylphosphino)propionyl]glycyl]-L-cysteine methyl ester a BFCA for the synthesis of rhenium and technetium-99m OXO-complexes. J Labelled Comp Radiopharm 2012. [DOI: 10.1002/jlcr.2580440116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ruggi A, Mauro M, Polo F, Reinhoudt DN, De Cola L, Velders AH. Structure–Photoluminescence Quenching Relationships of Iridium(III)–Tris(phenylpyridine) Complexes (Eur. J. Inorg. Chem. 7/2012). Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201290014] [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: 11/06/2022]
Affiliation(s)
- Albert Ruggi
- Laboratory of Supramolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, University of Twente, P. O. Box 217, Enschede, The Netherlands
| | - Matteo Mauro
- Westfälische Wilhelms‐Universität Münster, Physikalisches Institut and Center for Nanotechnology (CeNTech), Heisenbergstrasse 11, 48149 Münster, Germany
| | - Federico Polo
- Westfälische Wilhelms‐Universität Münster, Physikalisches Institut and Center for Nanotechnology (CeNTech), Heisenbergstrasse 11, 48149 Münster, Germany
| | - David N. Reinhoudt
- Laboratory of Supramolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, University of Twente, P. O. Box 217, Enschede, The Netherlands
| | - Luisa De Cola
- Laboratory of Supramolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, University of Twente, P. O. Box 217, Enschede, The Netherlands
- Westfälische Wilhelms‐Universität Münster, Physikalisches Institut and Center for Nanotechnology (CeNTech), Heisenbergstrasse 11, 48149 Münster, Germany
| | - Aldrik H. Velders
- Laboratory of Supramolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, University of Twente, P. O. Box 217, Enschede, The Netherlands
- BioMedical Chemistry, MIRA Institute of Biomedical Technology and Technical Medicine, University of Twente P. O. Box 217, Enschede, The Netherlands
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Fernández-Hernández JM, Yang CH, Beltrán JI, Lemaur V, Polo F, Fröhlich R, Cornil J, De Cola L. Control of the mutual arrangement of cyclometalated ligands in cationic iridium(III) complexes. Synthesis, spectroscopy, and electroluminescence of the different isomers. J Am Chem Soc 2011; 133:10543-58. [PMID: 21598947 DOI: 10.1021/ja201691b] [Citation(s) in RCA: 163] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Synthetic control of the mutual arrangement of the cyclometalated ligands (C^N) in Ir(III) dimers, [Ir(C^N)(2)Cl](2), and cationic bis-cyclometalated Ir(III) complexes, [Ir(C^N)(2)(L^L)](+) (L^L = neutral ligand), is described for the first time. Using 1-benzyl-4-(2,4-difluorophenyl)-1H-1,2,3-triazole (HdfptrBz) as a cyclometalating ligand, two different Ir(III) dimers, [Ir(dfptrBz)(2)Cl](2), are synthesized depending on the reaction conditions. At 80 °C, the dimer with an unusual mutual cis-C,C and cis-N,N configuration of the C^N ligands is isolated. In contrast, at higher temperature (140 °C), the geometrical isomer with the common cis-C,C and trans-N,N arrangement of the C^N ligand is obtained. In both cases, an asymmetric bridge, formed by a chloro ligand and two adjacent nitrogens of the triazole ring of one of the cyclometalated ligands, is observed. The dimers are cleaved in coordinating solvents to give the solvento complexes [Ir(dfptrBz)(2)Cl(S)] (S = DMSO or acetonitrile), which maintain the C^N arrangement of the parent dimers. Controlling the C^N ligand arrangement in the dimers allows for the preparation of the first example of geometrical isomers of a cationic bis-cyclometalated Ir(III) complex. Thus, N,N-trans-[Ir(dfptrBz)(2)(dmbpy)](+) (dmbpy = 4,4'-dimethyl-2,2'-bipyridine), with cis-C,C and trans-N,N arrangement of the C^N ligands, as well as N,N-cis-[Ir(dfptrBz)(2)(dmbpy)](+), with cis-C,C and cis-N,N C^N ligand orientation, are synthesized and characterized. Interestingly, both isomers show significantly different photophysical and electroluminescent properties, depending on the mutual arrangement of the C^N ligands. Furthermore, quantum chemical calculations give insight into the observed photophysical experimental data.
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Affiliation(s)
- Jesús M Fernández-Hernández
- Physikalisches Institut, Mendelstrasse 7, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany.
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Ramachandra S, Polo F, Edafe F, Schuermann KC, Nijhuis CA, Belser P, Reus WF, Whitesides GM, De Cola L. Luminescent acetylthiol derivative tripodal osmium(II) and iridium(III) complexes: Spectroscopy in solution and on surfaces. PURE APPL CHEM 2011. [DOI: 10.1351/pac-con-10-11-07] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Luminescent Os(II) and Ir(III) complexes containing a tripodal-type structure terminalized with three thiol derivatives are described. The tripod is introduced through derivatization, with a rigid spacer, of a phenanthroline ligand coordinated to the metal ion, and the entire structure possesses axial geometry. The geometry of the complexes combined with the three anchoring sites, the thiol groups, allows the complexes to adopt an almost perpendicular arrangement to the surfaces and the formation of a well-packed monolayer on Au substrates. The photophysical and electrochemical behavior of the complexes is studied in solution and on surfaces. Furthermore, a self-assembled monolayer (SAM) of Os(II) complexes on an ultraflat Au surface is used to fabricate a metal–molecule–metal junction with Au and In Ga eutectic as electrodes. The Os(II) SAM in the tunneling junction exhibits rectification behavior which is opposite in direction to that which we have previously shown for Ru(II) SAMs.
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Spornraft-Ragaller P, Bär M, Bauer A, Meurer M, Eben R, Walk R, Summer B, Maier S, Przybilla B, Thomas P, Meno K, Bøg A, Giselsson A, Grosch K, Nordskov Hansen G, Jimeno L, Polo F, Wolf H, Ipsen H, Weßbecher R, Paschke A, Zick C, Schrägle J, Hinsch K, Sander I, Fleischer C, Meurer U, Brüning T, Raulf-Heimsoth M, Heinen A, Scherf H, Scherf HP, Esser P, Weber V, Martin S, Heßelmann M, Ruëff F, Lee HH, Ernst D, Zuberbier T, Worm M, Mertens M, Brehler R, Braren I, Greunke K, Bredehorst R, Grunwald T, Spillner E. Diagnostik. Allergo J 2007. [DOI: 10.1007/bf03370609] [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: 10/21/2022]
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Castro AJ, Alché JD, Calabozo B, Rodríguez-García MI, Polo F. Pla 1 1 and Ole e 1 pollen allergens share common epitopes and similar ultrastructural localization. J Investig Allergol Clin Immunol 2007; 17 Suppl 1:41-47. [PMID: 18050571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
BACKGROUND English plantain (Plantago lanceolata L.) and olive (Olea europaea L.) pollens are important causes of pollinosis in large areas of North America, Australia, and the Mediterranean basin. The major pollen allergens of both plants, Pla I 1 and Ole e 1, share 38.7% of their amino acid sequences. OBJECTIVE To analyze putative cross-reactivity between these 2 proteins. METHODS Several antibodies and patients' sera were used in immunoblot and immunocytochemistry experiments. RESULTS Two anti-Pla I 1 antibodies were able to bind to 3 polypeptides from olive pollen protein extracts, which correspond to the 3 glycosylation isoforms of Ole e 1 (18-22 kDa) previously described. Moreover, Pla I 1 protein was found in the cytoplasm of both the vegetative and the generative cells of P lanceolata mature pollen. On olive pollen sections, these anti-Pla I 1 antibodies displayed significant labeling in the cytoplasm of the vegetative cell and in both the exine and the material adhering to this outer layer of the pollen wall. In addition, the anti-Ole e 1 antibody 10H1 was found to cross-react with proteins of similar masses (16-20 kDa) to Pla I 1 variants. In Plantago pollen sections, the 10H1 antibody recognized proteins located in the cytoplasm of both the vegetative and generative cells. Cross-reaction was confirmed using sera from patients allergic to either plant pollen. CONCLUSION Both allergens share common epitopes, which can be cross-recognized by different antibodies and sera from different patients, although this antigenic similarity seems to have little clinical relevance.
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Affiliation(s)
- A J Castro
- Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, CSIC, Granada, Spain
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Monsalve R, Gutierrez R, Polo F, Lombardero M, Galan A, King T, Marques L, Barber D. New Diagnostic Approaches for Wasps Venom Allergy. J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.11.138] [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: 10/23/2022]
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Ruiz P, Ortiz de Zárate J, Blanco S, Varela JI, Calderón A, Polo F, Cabezudo P, Marcé L, Díaz AB, Orive V. [Utility of covered self-expanding prostheses in benign gastroesophageal disease]. Gastroenterol Hepatol 2006; 29:107-8. [PMID: 16448614 DOI: 10.1157/13083910] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ortiz de Zarate J, Calderón AJ, Ruiz P, Díaz AB, Cabezudo P, Polo F, Marcé L, Blanco S, Orive V. Uso de pegamento y clips metálicos para el sellado endoscópico de perforación gástrica yatrógena. Gastroenterología y Hepatología 2006; 29:109-10. [PMID: 16448616 DOI: 10.1157/13083922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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