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Buffa V, Adamo G, Picciotto S, Bongiovanni A, Romancino DP. A Simple, Semi-Quantitative Acyl Biotin Exchange-Based Method to Detect Protein S-Palmitoylation Levels. Membranes (Basel) 2023; 13:361. [PMID: 36984748 PMCID: PMC10053657 DOI: 10.3390/membranes13030361] [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] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/07/2023] [Accepted: 03/16/2023] [Indexed: 06/18/2023]
Abstract
Protein S-palmitoylation is a reversible post-translational lipidation in which palmitic acid (16:0) is added to protein cysteine residue by a covalent thioester bond. This modification plays an active role in membrane targeting of soluble proteins, protein-protein interaction, protein trafficking, and subcellular localization. Moreover, palmitoylation is related to different diseases, such as neurodegenerative pathologies, cancer, and developmental defects. The aim of this research is to provide a straightforward and sensitive procedure to detect protein palmitoylation based on Acyl Biotin Exchange (ABE) chemistry. Our protocol setup consists of co-immunoprecipitation of native proteins (i.e., CD63), followed by the direct detection of palmitoylation on proteins immobilized on polyvinylidene difluoride (PVDF) membranes. With respect to the conventional ABE-based protocol, we optimized and validated a rapid semi-quantitative assay that is shown to be significantly more sensitive and highly reproducible.
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Affiliation(s)
- Valentina Buffa
- Institute for Research and Biomedical Innovation (IRIB), National Research Council (CNR), Via Ugo La Malfa, 153-90146 Palermo, Italy
- Integrare UMR_S951 Genethon, Inserm, University of Evry, Université Paris Saclay Genethon, 91000 Evry, France
| | - Giorgia Adamo
- Institute for Research and Biomedical Innovation (IRIB), National Research Council (CNR), Via Ugo La Malfa, 153-90146 Palermo, Italy
| | - Sabrina Picciotto
- Institute for Research and Biomedical Innovation (IRIB), National Research Council (CNR), Via Ugo La Malfa, 153-90146 Palermo, Italy
| | - Antonella Bongiovanni
- Institute for Research and Biomedical Innovation (IRIB), National Research Council (CNR), Via Ugo La Malfa, 153-90146 Palermo, Italy
| | - Daniele P. Romancino
- Institute for Research and Biomedical Innovation (IRIB), National Research Council (CNR), Via Ugo La Malfa, 153-90146 Palermo, Italy
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Paganini C, Capasso Palmiero U, Picciotto S, Molinelli A, Porello I, Adamo G, Manno M, Bongiovanni A, Arosio P. High-Yield Separation of Extracellular Vesicles Using Programmable Zwitterionic Coacervates. Small 2023; 19:e2204736. [PMID: 36367966 DOI: 10.1002/smll.202204736] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Programmable coacervates based on zwitterionic polymers are designed as dynamic materials for ion exchange bioseparation. These coacervates are proposed as promising materials for the purification of soft nanoparticles such as liposomes and extracellular vesicles (EVs). It is shown that the stimulus-responsiveness of the coacervates and the recruitment of desired molecules can be independently programmed by polymer design. Moreover, the polymeric coacervates can recruit and release intact liposomes, human EVs, and nanoalgosomes in high yields and separate vesicles from different types of impurities, including proteins and nucleic acids. This approach combines the speed and simplicity of precipitation methods and the programmability of chromatography with the gentleness of aqueous two-phase separation, thereby guaranteeing product stability. This material represents a promising alternative for providing a low-shear, gentle, and selective purification method for EVs.
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Affiliation(s)
- Carolina Paganini
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, Zürich, 8093, Switzerland
| | - Umberto Capasso Palmiero
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, Zürich, 8093, Switzerland
| | - Sabrina Picciotto
- Institute for Research and Biomedical Innovation, National Research Council of Italy, Via Ugo la Malfa 153, Palermo, 90146, Italy
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo, 90146, Italy
| | - Alessandro Molinelli
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, Zürich, 8093, Switzerland
| | - Ilaria Porello
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, Zürich, 8093, Switzerland
| | - Giorgia Adamo
- Institute for Research and Biomedical Innovation, National Research Council of Italy, Via Ugo la Malfa 153, Palermo, 90146, Italy
| | - Mauro Manno
- Institute of Biophysics, National Research Council of Italy, Via Ugo la Malfa 153, Palermo, 90146, Italy
| | - Antonella Bongiovanni
- Institute for Research and Biomedical Innovation, National Research Council of Italy, Via Ugo la Malfa 153, Palermo, 90146, Italy
| | - Paolo Arosio
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, Zürich, 8093, Switzerland
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Picciotto S, Santonicola P, Paterna A, Rao E, Raccosta S, Romancino DP, Noto R, Touzet N, Manno M, Di Schiavi E, Bongiovanni A, Adamo G. Extracellular Vesicles From Microalgae: Uptake Studies in Human Cells and Caenorhabditis elegans. Front Bioeng Biotechnol 2022; 10:830189. [PMID: 35402397 PMCID: PMC8987914 DOI: 10.3389/fbioe.2022.830189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/08/2022] [Indexed: 11/13/2022] Open
Abstract
Extracellular vesicles (EVs) are lipid membrane nano-sized vesicles secreted by various cell types for intercellular communication, found in all kingdoms of life. Nanoalgosomes are a subtype of EVs derived from microalgae with a sustainable biotechnological potential. To explore the uptake, distribution and persistence of nanoalgosomes in cells and living organisms, we separated them from a culture of the chlorophyte Tetraselmis chuii cells by tangential flow filtration (TFF), labelled them with different lipophilic dyes and characterized their biophysical attributes. Then we studied the cellular uptake of labelled nanoalgosomes in human cells and in C. elegans, demonstrating that they enter the cells through an energy dependent mechanism and are localized in the cytoplasm of specific cells, where they persist for days. Our data confirm that nanoalgosomes are actively uptaken in vitro by human cells and in vivo by C. elegans cells, supporting their exploitation as potential nanocarriers of bioactive compounds for theranostic applications.
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Affiliation(s)
- Sabrina Picciotto
- Cell-Tech HUB and Institute for Research and Biomedical Innovation, National Research Council of Italy (CNR), Palermo, Italy
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo, Italy
| | - Pamela Santonicola
- Institute of Biosciences and BioResources (IBBR)—National Research Council of Italy (CNR), Naples, Italy
| | - Angela Paterna
- Cell-Tech HUB and Institute of Biophysics, National Research Council of Italy (CNR), Palermo, Italy
| | - Estella Rao
- Cell-Tech HUB and Institute of Biophysics, National Research Council of Italy (CNR), Palermo, Italy
| | - Samuele Raccosta
- Cell-Tech HUB and Institute of Biophysics, National Research Council of Italy (CNR), Palermo, Italy
| | - Daniele Paolo Romancino
- Cell-Tech HUB and Institute for Research and Biomedical Innovation, National Research Council of Italy (CNR), Palermo, Italy
| | - Rosina Noto
- Cell-Tech HUB and Institute of Biophysics, National Research Council of Italy (CNR), Palermo, Italy
| | - Nicolas Touzet
- Centre for Environmental Research Innovation and Sustainability, Institute of Technology Sligo, Sligo, Ireland
| | - Mauro Manno
- Cell-Tech HUB and Institute of Biophysics, National Research Council of Italy (CNR), Palermo, Italy
| | - Elia Di Schiavi
- Institute of Biosciences and BioResources (IBBR)—National Research Council of Italy (CNR), Naples, Italy
- *Correspondence: Elia Di Schiavi, ; Antonella Bongiovanni, ; Giorgia Adamo,
| | - Antonella Bongiovanni
- Cell-Tech HUB and Institute for Research and Biomedical Innovation, National Research Council of Italy (CNR), Palermo, Italy
- *Correspondence: Elia Di Schiavi, ; Antonella Bongiovanni, ; Giorgia Adamo,
| | - Giorgia Adamo
- Cell-Tech HUB and Institute for Research and Biomedical Innovation, National Research Council of Italy (CNR), Palermo, Italy
- *Correspondence: Elia Di Schiavi, ; Antonella Bongiovanni, ; Giorgia Adamo,
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Paterna A, Rao E, Adamo G, Raccosta S, Picciotto S, Romancino D, Noto R, Touzet N, Bongiovanni A, Manno M. Isolation of Extracellular Vesicles From Microalgae: A Renewable and Scalable Bioprocess. Front Bioeng Biotechnol 2022; 10:836747. [PMID: 35360396 PMCID: PMC8963918 DOI: 10.3389/fbioe.2022.836747] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/01/2022] [Indexed: 12/13/2022] Open
Abstract
Extracellular vesicles (EVs) play a crucial role as potent signal transducers among cells, with the potential to operate cross-species and cross-kingdom communication. Nanoalgosomes are a subtype of EVs recently identified and isolated from microalgae. Microalgae represent a natural bioresource with the capacity to produce several secondary metabolites with a broad range of biological activities and commercial applications. The present study highlights the upstream and downstream processes required for the scalable production of nanoalgosomes from cultures of the marine microalgae Tetraselmis chuii. Different technical parameters, protocols, and conditions were assessed to improve EVs isolation by tangential flow filtration (TFF), aiming to enhance sample purity and yield. The optimization of the overall bioprocess was enhanced by quality control checks operated through robust biophysical and biochemical characterizations. Further, we showed the possibility of recycling by TFF microalgae cells post-EVs isolation for multiple EV production cycles. The present results highlight the potential of nanoalgosome production as a scalable, cost-effective bioprocess suitable for diverse scientific and industrial exploitations.
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Affiliation(s)
- Angela Paterna
- Cell-Tech Hub, Institute of Biophysics, National Research Council of Italy, Palermo, Italy
| | - Estella Rao
- Cell-Tech Hub, Institute of Biophysics, National Research Council of Italy, Palermo, Italy
| | - Giorgia Adamo
- Cell-Tech Hub, Institute for Research and Biomedical Innovation, National Research Council of Italy, Palermo, Italy
| | - Samuele Raccosta
- Cell-Tech Hub, Institute of Biophysics, National Research Council of Italy, Palermo, Italy
| | - Sabrina Picciotto
- Cell-Tech Hub, Institute for Research and Biomedical Innovation, National Research Council of Italy, Palermo, Italy
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo, Italy
| | - Daniele Romancino
- Cell-Tech Hub, Institute for Research and Biomedical Innovation, National Research Council of Italy, Palermo, Italy
| | - Rosina Noto
- Cell-Tech Hub, Institute of Biophysics, National Research Council of Italy, Palermo, Italy
| | - Nicolas Touzet
- Centre for Environmental Research Innovation and Sustainability, Institute of Technology Sligo, Sligo, Ireland
- *Correspondence: Nicolas Touzet, ; Antonella Bongiovanni, ; Mauro Manno,
| | - Antonella Bongiovanni
- Cell-Tech Hub, Institute for Research and Biomedical Innovation, National Research Council of Italy, Palermo, Italy
- *Correspondence: Nicolas Touzet, ; Antonella Bongiovanni, ; Mauro Manno,
| | - Mauro Manno
- Cell-Tech Hub, Institute of Biophysics, National Research Council of Italy, Palermo, Italy
- *Correspondence: Nicolas Touzet, ; Antonella Bongiovanni, ; Mauro Manno,
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Longo V, Longo A, Adamo G, Fiannaca A, Picciotto S, La Paglia L, Romancino D, La Rosa M, Urso A, Cibella F, Bongiovanni A, Colombo P. 2,2'4,4'-Tetrabromodiphenyl Ether (PBDE-47) Modulates the Intracellular miRNA Profile, sEV Biogenesis and Their miRNA Cargo Exacerbating the LPS-Induced Pro-Inflammatory Response in THP-1 Macrophages. Front Immunol 2021; 12:664534. [PMID: 34025666 PMCID: PMC8138315 DOI: 10.3389/fimmu.2021.664534] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 02/05/2021] [Accepted: 04/22/2021] [Indexed: 12/30/2022] Open
Abstract
The 2,2’4,4’-tetrabromodiphenyl ether (PBDE-47) is one of the most prominent PBDE congeners detected in the environment and in animal and human tissues. Animal model experiments suggested the occurrence of PBDE-induced immunotoxicity leading to different outcomes and recently we demonstrated that this substance can impair macrophage and basophil activities. In this manuscript, we decided to further examine the effects induced by PBDE-47 treatment on innate immune response by looking at the intracellular expression profile of miRNAs as well as the biogenesis, cargo content and activity of human M(LPS) macrophage cell-derived small extracellular vesicles (sEVs). Microarray and in silico analysis demonstrated that PBDE-47 can induce some epigenetic effects in M(LPS) THP-1 cells modulating the expression of a set of intracellular miRNAs involved in biological pathways regulating the expression of estrogen-mediated signaling and immune responses with particular reference to M1/M2 differentiation. In addition to the cell-intrinsic modulation of intracellular miRNAs, we demonstrated that PBDE-47 could also interfere with the biogenesis of sEVs increasing their number and selecting a de novo population of sEVs. Moreover, PBDE-47 induced the overload of specific immune related miRNAs in PBDE-47 derived sEVs. Finally, culture experiments with naïve M(LPS) macrophages demonstrated that purified PBDE-47 derived sEVs can modulate macrophage immune response exacerbating the LPS-induced pro-inflammatory response inducing the overexpression of the IL-6 and the MMP9 genes. Data from this study demonstrated that PBDE-47 can perturb the innate immune response at different levels modulating the intracellular expression of miRNAs but also interfering with the biogenesis, cargo content and functional activity of M(LPS) macrophage cell-derived sEVs.
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Affiliation(s)
- Valeria Longo
- Institute for Biomedical Research and Innovation, National Research Council of Italy (IRIB-CNR), Palermo, Italy
| | - Alessandra Longo
- Institute for Biomedical Research and Innovation, National Research Council of Italy (IRIB-CNR), Palermo, Italy
| | - Giorgia Adamo
- Institute for Biomedical Research and Innovation, National Research Council of Italy (IRIB-CNR), Palermo, Italy
| | - Antonino Fiannaca
- High Performance Computing and Networking Institute, National Research Council of Italy (ICAR-CNR), Palermo, Italy
| | - Sabrina Picciotto
- Institute for Biomedical Research and Innovation, National Research Council of Italy (IRIB-CNR), Palermo, Italy
| | - Laura La Paglia
- High Performance Computing and Networking Institute, National Research Council of Italy (ICAR-CNR), Palermo, Italy
| | - Daniele Romancino
- Institute for Biomedical Research and Innovation, National Research Council of Italy (IRIB-CNR), Palermo, Italy
| | - Massimo La Rosa
- High Performance Computing and Networking Institute, National Research Council of Italy (ICAR-CNR), Palermo, Italy
| | - Alfonso Urso
- High Performance Computing and Networking Institute, National Research Council of Italy (ICAR-CNR), Palermo, Italy
| | - Fabio Cibella
- Institute for Biomedical Research and Innovation, National Research Council of Italy (IRIB-CNR), Palermo, Italy
| | - Antonella Bongiovanni
- Institute for Biomedical Research and Innovation, National Research Council of Italy (IRIB-CNR), Palermo, Italy
| | - Paolo Colombo
- Institute for Biomedical Research and Innovation, National Research Council of Italy (IRIB-CNR), Palermo, Italy
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Adamo G, Fierli D, Romancino DP, Picciotto S, Barone ME, Aranyos A, Božič D, Morsbach S, Raccosta S, Stanly C, Paganini C, Gai M, Cusimano A, Martorana V, Noto R, Carrotta R, Librizzi F, Randazzo L, Parkes R, Capasso Palmiero U, Rao E, Paterna A, Santonicola P, Iglič A, Corcuera L, Kisslinger A, Di Schiavi E, Liguori GL, Landfester K, Kralj-Iglič V, Arosio P, Pocsfalvi G, Touzet N, Manno M, Bongiovanni A. Nanoalgosomes: Introducing extracellular vesicles produced by microalgae. J Extracell Vesicles 2021; 10:e12081. [PMID: 33936568 PMCID: PMC8077145 DOI: 10.1002/jev2.12081] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [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: 09/29/2020] [Revised: 02/26/2021] [Accepted: 03/09/2021] [Indexed: 12/18/2022] Open
Abstract
Cellular, inter-organismal and cross kingdom communication via extracellular vesicles (EVs) is intensively studied in basic science with high expectation for a large variety of bio-technological applications. EVs intrinsically possess many attributes of a drug delivery vehicle. Beyond the implications for basic cell biology, academic and industrial interests in EVs have increased in the last few years. Microalgae constitute sustainable and renewable sources of bioactive compounds with a range of sectoral applications, including the formulation of health supplements, cosmetic products and food ingredients. Here we describe a newly discovered subtype of EVs derived from microalgae, which we named nanoalgosomes. We isolated these extracellular nano-objects from cultures of microalgal strains, including the marine photosynthetic chlorophyte Tetraselmis chuii, using differential ultracentrifugation or tangential flow fractionation and focusing on the nanosized small EVs (sEVs). We explore different biochemical and physical properties and we show that nanoalgosomes are efficiently taken up by mammalian cell lines, confirming the cross kingdom communication potential of EVs. This is the first detailed description of such membranous nanovesicles from microalgae. With respect to EVs isolated from other organisms, nanoalgosomes present several advantages in that microalgae are a renewable and sustainable natural source, which could easily be scalable in terms of nanoalgosome production.
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Affiliation(s)
- Giorgia Adamo
- Institute for Research and Biomedical Innovation (IRIB) - National Research Council of Italy (CNR) Palermo Italy
| | - David Fierli
- Centre for Environmental Research Innovation and Sustainability Institute of Technology Sligo Sligo Ireland
| | - Daniele P Romancino
- Institute for Research and Biomedical Innovation (IRIB) - National Research Council of Italy (CNR) Palermo Italy
| | - Sabrina Picciotto
- Institute for Research and Biomedical Innovation (IRIB) - National Research Council of Italy (CNR) Palermo Italy
| | - Maria E Barone
- Centre for Environmental Research Innovation and Sustainability Institute of Technology Sligo Sligo Ireland
| | - Anita Aranyos
- Centre for Environmental Research Innovation and Sustainability Institute of Technology Sligo Sligo Ireland
| | - Darja Božič
- University of Ljubljana (UL) Ljubljana Slovene
| | - Svenja Morsbach
- Max Planck Institute for Polymer Research (MPIP) Mainz Germany
| | - Samuele Raccosta
- Institute of Biophysics (IBF) - National Research Council of Italy (CNR) Palermo Italy
| | - Christopher Stanly
- Institute of Biosciences and BioResources (IBBR) - National Research Council of Italy (CNR) Naples Italy
| | - Carolina Paganini
- Department of Chemistry and Applied Biosciences ETH Zurich Zurich Switzerland
| | - Meiyu Gai
- Max Planck Institute for Polymer Research (MPIP) Mainz Germany
| | - Antonella Cusimano
- Institute for Research and Biomedical Innovation (IRIB) - National Research Council of Italy (CNR) Palermo Italy
| | - Vincenzo Martorana
- Institute of Biophysics (IBF) - National Research Council of Italy (CNR) Palermo Italy
| | - Rosina Noto
- Institute of Biophysics (IBF) - National Research Council of Italy (CNR) Palermo Italy
| | - Rita Carrotta
- Institute of Biophysics (IBF) - National Research Council of Italy (CNR) Palermo Italy
| | - Fabio Librizzi
- Institute of Biophysics (IBF) - National Research Council of Italy (CNR) Palermo Italy
| | - Loredana Randazzo
- Institute of Biophysics (IBF) - National Research Council of Italy (CNR) Palermo Italy
| | - Rachel Parkes
- Centre for Environmental Research Innovation and Sustainability Institute of Technology Sligo Sligo Ireland
| | | | - Estella Rao
- Institute of Biophysics (IBF) - National Research Council of Italy (CNR) Palermo Italy
| | - Angela Paterna
- Institute of Biophysics (IBF) - National Research Council of Italy (CNR) Palermo Italy
| | - Pamela Santonicola
- Institute of Biosciences and BioResources (IBBR) - National Research Council of Italy (CNR) Naples Italy
| | - Ales Iglič
- University of Ljubljana (UL) Ljubljana Slovene
| | | | - Annamaria Kisslinger
- Institute of Experimental Endocrinology and Oncology (IEOS) - National Research Council of Italy (CNR) Naples Italy
| | - Elia Di Schiavi
- Institute of Biosciences and BioResources (IBBR) - National Research Council of Italy (CNR) Naples Italy
| | - Giovanna L Liguori
- Institute of Genetics and Biophysics (IGB) - National Research Council of Italy (CNR) Naples Italy
| | | | | | - Paolo Arosio
- Department of Chemistry and Applied Biosciences ETH Zurich Zurich Switzerland
| | - Gabriella Pocsfalvi
- Institute of Biosciences and BioResources (IBBR) - National Research Council of Italy (CNR) Naples Italy
| | - Nicolas Touzet
- Centre for Environmental Research Innovation and Sustainability Institute of Technology Sligo Sligo Ireland
| | - Mauro Manno
- Institute of Biophysics (IBF) - National Research Council of Italy (CNR) Palermo Italy
| | - Antonella Bongiovanni
- Institute for Research and Biomedical Innovation (IRIB) - National Research Council of Italy (CNR) Palermo Italy
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Picciotto S, Barone ME, Fierli D, Aranyos A, Adamo G, Božič D, Romancino DP, Stanly C, Parkes R, Morsbach S, Raccosta S, Paganini C, Cusimano A, Martorana V, Noto R, Carrotta R, Librizzi F, Capasso Palmiero U, Santonicola P, Iglič A, Gai M, Corcuera L, Kisslinger A, Di Schiavi E, Landfester K, Liguori GL, Kralj-Iglič V, Arosio P, Pocsfalvi G, Manno M, Touzet N, Bongiovanni A. Isolation of extracellular vesicles from microalgae: towards the production of sustainable and natural nanocarriers of bioactive compounds. Biomater Sci 2021; 9:2917-2930. [DOI: 10.1039/d0bm01696a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Biophysical and biochemical characterisation of microalgae-derived extracellular vesicles.
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Agabiti N, Cesaroni G, Picciotto S, Bisanti L, Caranci N, Costa G, Forastiere F, Marinacci C, Pandolfi P, Russo A, Perucci CA. The association of socioeconomic disadvantage with postoperative complications after major elective cardiovascular surgery. J Epidemiol Community Health 2009; 62:882-9. [PMID: 18791046 PMCID: PMC2602741 DOI: 10.1136/jech.2007.067470] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background: Understanding the mechanism by which both patient- and hospital level factors act in generating disparities has important implications for clinicians and policy-makers. Objective: To measure the association between socioeconomic position (SEP) and postoperative complications after major elective cardiovascular procedures. Design: Multicity hospital-based study. Subjects: Using Hospital Discharge Registries (ICD-9-CM codes), 19 310 patients were identified undergoing five cardiovascular operations (coronary artery bypass grafting (CABG), valve replacement, carotid endarterectomy, major vascular bypass, repair of unruptured abdominal aorta aneurysm (AAA repair)) in four Italian cities, 1997–2000. Measures: For each patient, a five-level median income index by census block of residence was calculated. In-hospital 30-day mortality, cardiovascular complications (CCs) and non-cardiovascular complications (NCCs) were the outcomes. Odds ratios (ORs) were estimated with multilevel logistic regression adjusting for city of residence, gender, age and comorbidities taking into account hospital and individual dependencies. Main results: In-hospital 30-day mortality varied by type of surgery (CABG 3.7%, valve replacement 5.7%, carotid endarterectomy 0.9%, major vascular bypass 8.8%, AAA repair 4.0%). Disadvantaged people were more likely to die after CABG (lowest vs highest income OR 1.93, p trend 0.023). For other surgeries, the relationship between SEP and mortality was less clear. For cardiac surgery, SEP differences in mortality were higher for publicly funded patients in low-volume hospitals (lowest vs highest income OR 3.90, p trend 0.039) than for privately funded patients (OR 1.46, p trend 0.444); however, the difference in the SEP gradients was not statistically significant. Conclusions: Disadvantaged people seem particularly vulnerable to mortality after cardiovascular surgery. Efforts are needed to identify structural factors that may enlarge SEP disparities within hospitals.
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Affiliation(s)
- N Agabiti
- Department of Epidemiology, Local Health Authority Rome E, Via di S Costanza 53, 00198 Rome, Italy.
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Grau M, Guxens M, Subirana I, Fito M, Covas MI, Jacquemin B, Sunyer J, Lanki T, Picciotto S, Bellander T, Katsouyanni K, Schneider A, Peters A, Marrugat J. South-to-North gradient in lipid peroxidation in men with stable coronary artery disease in Europe. Eur Heart J 2007; 28:2841-9. [DOI: 10.1093/eurheartj/ehm446] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Picciotto S, Von Klot S, Forastiere F, Peters A, Stafoggia M, Perucci CA. Effect Modifiers of the Association Between Air Pollution and Cardiac Readmissions Among Survivors of First Myocardial Infarction. Epidemiology 2006. [DOI: 10.1097/00001648-200611001-00266] [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: 11/25/2022]
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Lanki T, Pekkanen J, Aalto P, Elosua R, Berglind N, D'Ippoliti D, Kulmala M, Nyberg F, Peters A, Picciotto S, Salomaa V, Sunyer J, Tiittanen P, von Klot S, Forastiere F. Associations of traffic related air pollutants with hospitalisation for first acute myocardial infarction: the HEAPSS study. Occup Environ Med 2006; 63:844-51. [PMID: 16912091 PMCID: PMC2078003 DOI: 10.1136/oem.2005.023911] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Acute myocardial infarction (AMI) is the leading cause of death attributed to cardiovascular diseases. An association between traffic related air pollution and AMI has been suggested, but the evidence is still limited. OBJECTIVES To evaluate in a multicentre study association between hospitalisation for first AMI and daily levels of traffic related air pollution. METHODS The authors collected data on first AMI hospitalisations in five European cities. AMI registers were available in Augsburg and Barcelona; hospital discharge registers (HDRs) were used in Helsinki, Rome and Stockholm. NO2, CO, PM10 (particles <10 microm), and O3 were measured at central monitoring sites. Particle number concentration (PNC), a proxy for ultrafine particles (<0.1 microm), was measured for a year in each centre, and then modelled retrospectively for the whole study period. Generalised additive models were used for statistical analyses. Age and 28 day fatality and season were considered as potential effect modifiers in the three HDR centres. RESULTS Nearly 27,000 cases of first AMI were recorded. There was a suggestion of an association of the same day CO and PNC levels with AMI: RR = 1.005 (95% CI 1.000 to 1.010) per 0.2 mg/m3 and RR = 1.005 (95% CI 0.996 to 1.015) per 10000 particles/cm3, respectively. However, associations were only observed in the three cities with HDR, where power for city-specific analyses was higher. The authors observed in these cities the most consistent associations among fatal cases aged <75 years: RR at 1 day lag for CO = 1.021 (95% CI 1.000 to 1.048) per 0.2 mg/m3, for PNC = 1.058 (95% CI 1.012 to 1.107) per 10000 particles/cm3, and for NO2 = 1.032 (95% CI 0.998 to 1.066) per 8 microg/m3. Effects of air pollution were more pronounced during the warm than the cold season. CONCLUSIONS The authors found support for the hypothesis that exposure to traffic related air pollution increases the risk of AMI. Most consistent associations were observed among fatal cases aged <75 years and in the warm season.
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Affiliation(s)
- T Lanki
- Environmental Epidemiology Unit, National Public Health Institute (KTL), Kuopio, Finland.
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Forastiere F, Stafoggia M, Picciotto S, Perucci CA. PM10 AND MORTALITY: EFFECT MODIFICATION BY SOCIO-ECONOMIC STATUS AND PRE-EXISTING MEDICAL CHARACTERISTICS. Epidemiology 2005. [DOI: 10.1097/00001648-200509000-00311] [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: 11/25/2022]
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Stafoggia M, Bisanti L, Cadum E, De Maria M, Forastiere F, Miglio P, Pandolfi P, Picciotto S, Rognoni M, Russo A, Perucci CA. SUSCEPTIBILITY TO HIGH TEMPERATURES: A MULTI CITY CASE-CROSSOVER ANALYSIS. Epidemiology 2005. [DOI: 10.1097/00001648-200509000-00337] [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: 11/25/2022]
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Russell A, Bisanti L, Cadum E, De Maria M, Forestiere F, Miglio R, Pandolfi P, Perucci C, Picciotto S, Rognoni M, Stafoggia M. 282: Identification of Vulnerable-To-Heat Population: Case-Only Approach. Am J Epidemiol 2005. [DOI: 10.1093/aje/161.supplement_1.s71a] [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: 11/14/2022] Open
Affiliation(s)
- A Russell
- Local Health Authority, Milan, ITALY
| | - L Bisanti
- Local Health Authority, Milan, ITALY
| | - E Cadum
- Local Health Authority, Milan, ITALY
| | | | | | - R Miglio
- Local Health Authority, Milan, ITALY
| | | | - C Perucci
- Local Health Authority, Milan, ITALY
| | | | - M Rognoni
- Local Health Authority, Milan, ITALY
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Abstract
Persistent infection with the Edmonston strain of measles virus (MV) has been established in IC-21 cells, an immortalized murine macrophage cell line. Persistence was established immediately without syncytia formation or cytopathic effects. MV was expressed in the majority of the cells as evidenced by immunofluorescence microscopy, flow cytometry, infectious centers assays, and limiting dilution analysis. Hemagglutinin (H) and phosphoprotein expressed in persistently infected IC-21 cells had retarded migration in SDS-PAGE gels when compared to these proteins expressed in Vero cells. H protein differences were also found between freshly infected IC-21 cells and persistently infected IC-21 cells passaged for over 2 years. Six sublines of IC-21 cells, infected at different times, have maintained these characteristics for 2 years of passage. During this time period the intensity of immunofluorescence and the number of infectious virus particles recoverable fluctuated in five of the six cell lines. In one cell line virus expression remained at a consistent high level. The ability to establish a persistent MV infection in murine macrophages allows studies using a cell important in disseminating the infection. It facilitates experiments on immunological aspects of viral immunity by enabling cell mixing experiments with histocompatible cell populations and by making available the wide array of cellular and humoral reagents in the mouse.
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Affiliation(s)
- M B Goldman
- Department of Medicine, College of Medicine, Pennsylvania State University, Hershey 17033
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