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Quadri M, Bonetti LR, Panini R, Tiso N, Morasso M, Lotti R, Marconi A, Pincelli C, Palazzo E. 438 CD271 modulates cutaneous squamous cell carcinoma growth and invasion in patient-derived spheroids and zebrafish avatar. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.452] [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: 11/19/2022]
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Quadri M, Bonetti LR, Vaschieri C, Lotti R, Campanini L, Canossa M, Morasso M, Pincelli C, Marconi A, Palazzo E. 186 Dissecting the role of the common neurotrophin receptor CD271 in the skin: generation and characterization of a novel mouse model with keratinocyte-specific conditional deletion. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.197] [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: 11/19/2022]
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Doria S, Valeri F, Lasagni L, Sanguineti V, Ragonesi R, Akbar M, Gnerucci A, Del Bue A, Marconi A, Risaliti G, Grigioni M, Miele V, Sona D, Cisbani E, Gori C, Taddeucci A. Denoise and segmentation of CT images through CNNs: performance and post-processing characterization. Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00025-4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Lotti R, Marconi A, Hundt J, Hammers C, Zagari F, Camboni M, Bennett B, Ludwig R, Pincelli C. 028 PC111, a monoclonal anti-Fas Ligand antibody, blocks blister formation in human pemphigus. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.030] [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: 11/27/2022]
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Quadri M, Baudouin C, Lotti R, Palazzo E, Campanini L, Bernard F, Bellemère G, Pincelli C, Marconi A. 331 Characterisation of interfollicular stem cells and early TA cells during the transition from infant to child skin. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.339] [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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Moscheni M, Vergani P, Cetin I, Cromi A, Ghezzi F, Locatelli A, Iurlano E, Marconi A, Auxilia F, Bevilacqua L, Dell'Oro S, Picchetti CM, Scotti L, Trivelli M, Burato E. [The use of RCGO triggers in the obstetric - gynecological procedures: the impact on the reduction of adeverse events. The experience of the Lombardia Region]. Ig Sanita Pubbl 2020; 76:241-255. [PMID: 33161421] [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: 06/11/2023]
Abstract
The last few weeks of pregnancy are critical to a baby's health because important organs, including the brain and lungs, are not completely developed until the end of pregnancy. The adverse events during labor and childbirth can have very serious physical, psychological and financial consequences for the child, the family, health professionals and the whole community. These events can be reduced through interventions aimed at improving the safety and quality of care, based on evidence-based knowledge, guidelines and practices that must be widely and effectively applied. This work reports the experience of the Lombardy Region on improvement actions in the obstetric and gynecological procedures for the reduction of adverse events and sentinel events through the monitoring and management of the RCGS trigger tool.
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Affiliation(s)
- M Moscheni
- Coordinatore del Gruppo di Lavoro regionale Trigger in sala parto
| | - P Vergani
- Direttore della Scuola di Specialità di Ostetricia e Ginecologia Università degli Studi di Milano Bicocca
| | - I Cetin
- Professore Ordinario di Ostetricia e Ginecologia, Università degli Studi di Milano
| | - A Cromi
- Professore Associato Ostetricia e Ginecologia Università degli Studi dell'Insubria
| | - F Ghezzi
- Professore Ordinario di Ostetricia e Ginecologia, Università degli Studi dell'Insubria
| | - A Locatelli
- Direttore S.C. Ostetricia e Ginecologia ASST Vimercate
| | - E Iurlano
- Dirigente Medico. Responsabile Sala Parto IRCCS Policlinico Milano
| | - A Marconi
- Professore Ordinario di Ostetricia e Ginecologia, Università degli Studi di Milano
| | - F Auxilia
- Risk Manager, ASST Fatebenefratelli Sacco
| | | | - S Dell'Oro
- Scuola di Specializzazione in Ostetricia e Ginecologia Università degli studi Milano Biccocca
| | - C M Picchetti
- Centro Regionale gestione del rischio in sanità e sicurezza del paziente, DG Welfare - Regione Lombardia
| | - L Scotti
- Centro Regionale gestione del rischio in sanità e sicurezza del paziente, DG Welfare - Regione Lombardia
| | - M Trivelli
- Direttore DG Welfare - Regione Lombardia
| | - E Burato
- Coordinatore Centro Regionale gestione del rischio in sanità e sicurezza del paziente, DG Welfare - Regione Lombardia
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Pincelli C, Quadri M, Lotti R, Palazzo E, Marconi A. 1088 Efficacy of AD-DER emollient in an in vitro atopic dermatitis model. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1101] [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: 10/17/2022]
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Marconi A, Quadri M, Lotti R, Palazzo E, Farnetani F, Pincelli C, Pellacani G. 1211 Bio-molecular profile of melanoma subtypes selected by reflectance confocal microscopy. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1226] [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: 10/17/2022]
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Lotti R, Atene C, Palazzo E, Quadri M, Marconi A, Zanocco-Marani T, Pincelli C. 049 Development of active mouse models to recapitulate pemphigus subtypes and to evaluate response to therapy. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.053] [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: 10/17/2022]
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Quadri M, Marconi A, Francesca T, Lotti R, Palazzo E, Farnetani F, Pincelli C, Pellacani G. 585 Aggressiveness of melanoma subtypes selected by reflectance confocal microscopy. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.782] [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: 11/28/2022]
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Pagnini F, Marconi A, Tagliaferri A, Manzoni GM, Gatto R, Fabiani V, Gragnano G, Rossi G, Volpato E, Banfi P, Palmieri A, Graziano F, Castelnuovo G, Corbo M, Molinari E, Riva N, Sansone V, Lunetta C. Meditation training for people with amyotrophic lateral sclerosis: a randomized clinical trial. Eur J Neurol 2017; 24:578-586. [DOI: 10.1111/ene.13246] [Citation(s) in RCA: 26] [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: 09/28/2016] [Accepted: 01/04/2017] [Indexed: 02/02/2023]
Affiliation(s)
- F. Pagnini
- Department of Psychology; Università Cattolica del Sacro Cuore; Milan Italy
- Azienda Ospedaliera Niguarda Ca’ Granda; Milan Italy
| | - A. Marconi
- NEuroMuscular Omnicentre (NEMO) − Fondazione Serena Onlus; Milan Italy
| | | | | | - R. Gatto
- Azienda Ospedaliera Niguarda Ca’ Granda; Milan Italy
| | - V. Fabiani
- Azienda Ospedaliera Niguarda Ca’ Granda; Milan Italy
| | - G. Gragnano
- NEuroMuscular Omnicentre (NEMO) − Fondazione Serena Onlus; Milan Italy
| | - G. Rossi
- NEuroMuscular Omnicentre (NEMO) − Fondazione Serena Onlus; Milan Italy
| | - E. Volpato
- Department of Psychology; Università Cattolica del Sacro Cuore; Milan Italy
- IRCCS Fondazione Don Carlo Gnocchi ONLUS; Milan Italy
| | - P. Banfi
- IRCCS Fondazione Don Carlo Gnocchi ONLUS; Milan Italy
| | - A. Palmieri
- Department of Philosophy, Sociology, Pedagogy and Applied Psychology; University of Padova; Padua Italy
| | - F. Graziano
- Department of Brain and Behavioural Sciences; Università degli Studi di Pavia; Pavia Italy
| | - G. Castelnuovo
- Department of Psychology; Università Cattolica del Sacro Cuore; Milan Italy
- Psychology Research Laboratory; Istituto Auxologico Italiano IRCCS; Piancavallo Italy
| | - M. Corbo
- Department of Neurorehabilitation Sciences; Casa Cura Policlinico; Milan Italy
| | - E. Molinari
- Department of Psychology; Università Cattolica del Sacro Cuore; Milan Italy
- Psychology Research Laboratory; Istituto Auxologico Italiano IRCCS; Piancavallo Italy
| | - N. Riva
- Department of Neurology; INSPE and Division of Neuroscience; San Raffaele Scientific Institute, Milan Italy
| | - V. Sansone
- NEuroMuscular Omnicentre (NEMO) − Fondazione Serena Onlus; Milan Italy
| | - C. Lunetta
- NEuroMuscular Omnicentre (NEMO) − Fondazione Serena Onlus; Milan Italy
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Quadri M, Saltari A, Truzzi F, Lotti R, Palazzo E, Tiso N, Marconi A, Pincelli C. 457 The lack of CD271 favors melanoma metastasis in zebrafish and is associated with a reduced cell-cell adhesion. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.479] [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: 11/26/2022]
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Marconi A, Truzzi F, Saltari A, Lotti R, Palazzo E, Quadri M, Schafer P, Pincelli C. 142 CD271 regulates human keratinocyte functions through Phosphodiesterase 4 binding. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.160] [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: 11/26/2022]
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Marconi A, Di Marcantonio P, D'Odorico V, Cristiani S, Maiolino R, Oliva E, Origlia L, Riva M, Valenziano L, Zerbi FM, Abreu M, Adibekyan V, Allende Prieto C, Amado PJ, Benz W, Boisse I, Bonfils X, Bouchy F, Buchhave L, Buscher D, Cabral A, Canto Martins BL, Chiavassa A, Coelho J, Christensen LB, Delgado-Mena E, de Medeiros JR, Di Varano I, Figueira P, Fisher M, Fynbo JPU, Glasse ACH, Haehnelt M, Haniff C, Hansen CJ, Hatzes A, Huke P, Korn AJ, Leão IC, Liske J, Lovis C, Maslowski P, Matute I, McCracken RA, Martins CJAP, Monteiro MJPFG, Morris S, Morris T, Nicklas H, Niedzielski A, Nunes NJ, Palle E, Parr-Burman PM, Parro V, Parry I, Pepe F, Piskunov N, Queloz D, Quirrenbach A, Rebolo Lopez R, Reiners A, Reid DT, Santos N, Seifert W, Sousa S, Stempels HC, Strassmeier K, Sun X, Udry S, Vanzi L, Vestergaard M, Weber M, Zackrisson E. EELT-HIRES the high-resolution spectrograph for the E-ELT. ACTA ACUST UNITED AC 2016. [DOI: 10.1117/12.2231653] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [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]
Affiliation(s)
| | | | - V. D'Odorico
- INAF - Osservatorio Astronomico di Trieste (Italy)
| | - S. Cristiani
- INAF - Osservatorio Astronomico di Trieste (Italy)
| | | | - E. Oliva
- INAF - Osservatorio Astrofisico di Arcetri (Italy)
| | - L. Origlia
- INAF - Osservatorio Astronomico di Bologna (Italy)
| | - M. Riva
- INAF - Osservatorio Astronomico di Brera (Italy)
| | | | | | | | | | | | - P. J. Amado
- Instituto de Astrofísica de Andalucía (Spain)
| | | | - I. Boisse
- Lab. d'Astrophysique de Marseille (France)
| | - X. Bonfils
- Observatoire de Science de l'Univ. de Grenoble (France)
| | | | | | | | | | | | - A. Chiavassa
- Lab. Lagrange, Univ. Côte d'Azur, Observatoire de la Côte d'Azur (France)
| | | | | | | | | | - I. Di Varano
- Leibniz-Institut für Astrophysik Potsdam (Germany)
| | | | | | | | | | | | | | | | - A. Hatzes
- Thüringer Landessternwarte Tautenburg (Germany)
| | - P. Huke
- Univ. of Göttingen (Germany)
| | | | - I. C. Leão
- Federal Univ. of Rio Grande do Norte (Brazil)
| | | | | | | | | | | | | | | | | | | | | | | | | | - E. Palle
- Instituto de Astrofísica de Canarias (Spain)
| | | | - V. Parro
- Instituto Mauá de Tecnologia (Brazil)
| | - I. Parry
- Univ. of Cambridge (United Kingdom)
| | - F. Pepe
- Univ. de Genève (Switzerland)
| | | | | | | | | | | | | | | | | | | | | | | | - X. Sun
- Univ. of Cambridge (United Kingdom)
| | - S. Udry
- Univ. de Genève (Switzerland)
| | - L. Vanzi
- Pontificia Univ. Católica de Chile (Chile)
| | | | - M. Weber
- Leibniz-Institut für Astrophysik Potsdam (Germany)
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Bianconi F, Bonomo M, Marconi A, Kolliakou A, Stilo SA, Iyegbe C, Gurillo Muñoz P, Homayoun S, Mondelli V, Luzi S, Dazzan P, Prata D, La Cascia C, O'Connor J, David A, Morgan C, Murray RM, Lynskey M, Di Forti M. Differences in cannabis-related experiences between patients with a first episode of psychosis and controls. Psychol Med 2016; 46:995-1003. [PMID: 26670601 DOI: 10.1017/s0033291715002494] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Many studies have reported that cannabis use increases the risk of a first episode of psychosis (FEP). However, only a few studies have investigated the nature of cannabis-related experiences in FEP patients, and none has examined whether these experiences are similar in FEP and general populations. The aim of this study was to explore differences in self-reported cannabis experiences between FEP and non-psychotic populations. METHOD A total of 252 subjects, who met International Classification of Diseases (ICD)-10 criteria for FEP, and 217 controls who reported cannabis use were selected from the Genetics and Psychosis (GAP) study. The Medical Research Council Social Schedule and the Cannabis Experience Questionnaire were used to collect sociodemographic data and cannabis use information, respectively. RESULTS Both 'bad' and 'enjoyable' experiences were more commonly reported by FEP subjects than controls. Principal components factor analysis identified four components which explained 62.3% of the variance. Linear regression analysis on the whole sample showed that the type of cannabis used and beliefs about the effect of cannabis on health all contributed to determining the intensity and frequency of experiences. Linear regression analysis on FEP subjects showed that the duration of cannabis use and amount of money spent on cannabis were strongly related to the intensity and frequency of enjoyable experiences in this population. CONCLUSIONS These results suggest a higher sensitivity to cannabis effects among people who have suffered their first psychotic episode; this hypersensitivity results in them reporting both more 'bad' and 'enjoyable' experiences. The greater enjoyment experienced may provide an explanation of why FEP patients are more likely to use cannabis and to continue to use it despite experiencing an exacerbation of their psychotic symptoms.
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Affiliation(s)
- F Bianconi
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - M Bonomo
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - A Marconi
- Department of Paediatrics and Child and Adolescent Neuropsychiatry,'Sapienza' University of Rome,Rome,Italy
| | - A Kolliakou
- Biomedical Research Centre Nucleus,King's College London,London,UK
| | - S A Stilo
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - C Iyegbe
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | | | - S Homayoun
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - V Mondelli
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - S Luzi
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - P Dazzan
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - D Prata
- Department of Neuroimaging,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - C La Cascia
- Department of Experimental Biomedicine and Clinical Neuroscience,University of Palermo,Palermo,Italy
| | - J O'Connor
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - A David
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - C Morgan
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - R M Murray
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - M Lynskey
- Addiction Department,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
| | - M Di Forti
- Department of Psychosis Studies,Institute of Psychiatry, Psychology and Neuroscience, King's College London,London,UK
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Pardi G, Bozzetti P, Marconi A. Renal diseases and pregnancy: maternal and fetal disposition of drugs. Contrib Nephrol 2015; 37:157-69. [PMID: 6713869 DOI: 10.1159/000408566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Ramíırez JM, Ferrarese Lupi F, Jambois O, Berencén Y, Navarro-Urrios D, Anopchenko A, Marconi A, Prtljaga N, Tengattini A, Pavesi L, Colonna JP, Fedeli JM, Garrido B. Erbium emission in MOS light emitting devices: from energy transfer to direct impact excitation. Nanotechnology 2012; 23:125203. [PMID: 22414783 DOI: 10.1088/0957-4484/23/12/125203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The electroluminescence (EL) at 1.54 μm of metal–oxide–semiconductor (MOS) devices withEr3C ions embedded in the silicon-rich silicon oxide (SRSO) layer has been investigated under different polarization conditions and compared with that of erbium doped SiO2 layers. EL time-resolved measurements allowed us to distinguish between two different excitation mechanisms responsible for the Er3C emission under an alternate pulsed voltage signal (APV). Energy transfer from silicon nanoclusters (Si-ncs) to Er3C is clearly observed at low-field APV excitation. We demonstrate that sequential electron and hole injection at the edges of the pulses creates excited states in Si-ncs which upon recombination transfer their energy to Er3C ions. On the contrary, direct impact excitation of Er3C by hot injected carriers starts at the Fowler–Nordheim injection threshold (above 5 MV cm(-1)) and dominates for high-field APV excitation.
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Affiliation(s)
- J M Ramíırez
- Departament d’Electrònica, Universitat de Barcelona, Carrer Martí i Franquès 1, Barcelona 08028, Spain.
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Cresci G, Mannucci F, Maiolino R, Marconi A, Gnerucci A, Magrini L. Gas accretion as the origin of chemical abundance gradients in distant galaxies. Nature 2010; 467:811-3. [DOI: 10.1038/nature09451] [Citation(s) in RCA: 179] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Accepted: 08/20/2010] [Indexed: 11/09/2022]
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Lai A, Riva C, Marconi A, Balestrieri M, Razzolini F, Meini G, Vicenti I, Rosi A, Saladini F, Caramma I, Franzetti M, Rossini V, Galli A, Galli M, Violin M, Zazzi M, Balotta C. Changing patterns in HIV-1 non-B clade prevalence and diversity in Italy over three decades. HIV Med 2010; 11:593-602. [PMID: 20408891 DOI: 10.1111/j.1468-1293.2010.00832.x] [Citation(s) in RCA: 49] [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: 12/01/2022]
Abstract
BACKGROUND HIV-1 non-B subtypes have recently entered Western Europe following immigration from other regions. The distribution of non-B clades and their association with demographic factors, over the entire course of the HIV-1 epidemic, have not been fully investigated in Italy. METHODS We carried out a phylogenetic analysis of HIV-1 pol sequences derived from 3670 patients followed at 50 Italian clinical centres over nearly three decades. RESULTS Overall, 417 patients (11.4%) carried non-B subtypes. The prevalence of non-B strains increased from 2.6% in 1980-1992 to 18.9% in 1993-2008 (P<0.0001) in a subset of 2479 subjects with a known year of diagnosis. A multivariate analysis on a subset of 1364 patients for whom relevant demographic data were available indicated that African ethnicity, heterosexual route of infection and year of diagnosis were independently associated with non-B HIV-1 infection (P ≤ 0.0001). All pure subtypes, except for clade K, and seven circulating recombinant forms were detected, accounting for 56.6 and 34.1% of the non-B infections, respectively. The F1 subtype was the most prevalent non-B clade among Europeans and was acquired heterosexually in half of this patient population. Unique recombinant forms accounted for 9.4% of the non-B sequences and showed a B/F1 recombination pattern in one-third of cases. CONCLUSIONS The circulation of non-B clades has significantly increased in Italy in association with demographic changes. Spread of the F1 subtype and B/F recombinants appears to predominate, which may result in a redistribution of the relative proportions of the different strains, and this could lead to overlapping epidemics. Thus, the HIV-1 landscape in Italy may in future be distinct from that of the rest of Europe.
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Affiliation(s)
- A Lai
- Section of Infectious Diseases and Immunopathology, Department of Clinical Sciences, L Sacco Hospital, University of Milan, Milan, Italy.
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Borchini R, Bonzini M, Veronesi G, Fava C, Carenzi MC, Mombelli S, Marconi A, Bono AV, Ferrario MM. [Validation of a screening method for occupational bladder cancer]. Med Lav 2009; 100:438-447. [PMID: 20359136] [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: 05/29/2023]
Abstract
BACKGROUND Transitional bladder cancer is the most frequent malignant urinary neoplasm. Occupational exposure to aromatic amines and to polycyclic aromatic hydrocarbons are the main risk factors, in addition to cigarette smoking, recurrent inflammatory diseases of the urinary tract, consumption of certain drugs and a positive family history. Nevertheless cases of work-related bladder cancer are poorly identified in Italy. OBJECTIVE The aim of this study is to assess the screening accuracy of a short structured interview to detect suspected cases of occupational bladder cancer, which may be confirmed in a second step assessment by an occupational physician. METHODS The study sample consisted of 94 transitional bladder cancer patients, first hospitalised in 2004 and 2005 at the Department of Urology of the Ospedale di Circolo - Fondazione Macchi, in Varese, Italy. Based on data collected through a simple structured interview, it was possible to estimate two occupational exposure indices: one taking into account only the length of employment in industrial settings (DS Index) and the other considering job title in addition (DSM Index). For all cases a second-step assessment by an occupational physician (gold standard) made it possible to establish the occupational origin of cancer and to assess accuracy. RESULTS Satisfactory values of the area under the ROC curve were found for both indices (AUC 0,81 for DS and 0,87 for DSM). In particular at the same level of sensitivity (90%), the DSM Index showed a better specificity (72%) in comparison to the DS Index (64%). CONCLUSIONS The short structured interview proposed here proved to be a valuable tool for general practitioners and urologists to detect cases of bladder cancer of suspected occupational aetiology, which can be referred to an occupational physician for further investigations.
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Affiliation(s)
- Rossana Borchini
- Medicina del Lavoro e Preventiva, Ospedale di Circolo, Fondazione Macchi, Varese
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Marconi A, Balestrieri M, Comastri G, Pulvirenti F, Gennari W, Tagliazucchi S, Pecorari M, Borghi V, Marri D, Zazzi M. Evaluation of the Abbott Real-Time HIV-1 quantitative assay with dried blood spot specimens. Clin Microbiol Infect 2009; 15:93-7. [DOI: 10.1111/j.1469-0691.2008.02116.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Laws E, Giannini S, Marconi A, Geest SD, Jaggi S. 1378 Fasting times prior to cardiac surgery: Are the guidelines being followed? Eur J Cardiovasc Nurs 2008. [DOI: 10.1016/j.ejcnurse.2008.01.078] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- E. Laws
- Ospedale “G. Pasquinucci”, Massa Italy
| | | | | | - S. De Geest
- Institute of Nursing Science, University of Basel, Switzerland
| | - S. Jaggi
- Institute of Nursing Science, University of Basel, Switzerland
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Nardini E, Risaliti G, Salvati M, Sani E, Imanishi M, Marconi A, Maiolino R. Spectral decomposition of starbursts and active galactic nuclei in 5–8 μm Spitzer-IRS spectra of local ultraluminous infrared galaxies. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1745-3933.2008.00450.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Marconi A, Gennari W, Tagliazucchi S, Comastri G, Pulvirenti F, Pecorari M, Zazzi M. UTILIZZO DI SANGUE INTERO ESSICATO SU CARTONCINO PER LA DETERMINAZIONE QUANTITATIVA DI HIV-1 RNA. Microbiol Med 2007. [DOI: 10.4081/mm.2007.2808] [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: 11/23/2022] Open
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Bertino P, Marconi A, Palumbo L, Bruni BM, Barbone D, Germano S, Dogan AU, Tassi GF, Porta C, Mutti L, Gaudino G. Erionite and asbestos differently cause transformation of human mesothelial cells. Int J Cancer 2007; 121:12-20. [PMID: 17354240 DOI: 10.1002/ijc.22687] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Malignant mesothelioma (MM) is an aggressive tumor associated with environmental or occupational exposure to asbestos fibers. Erionite is a fibrous zeolite, morphologically similar to asbestos and it is assumed to be even more carcinogenic. Onset and progression of MM has been suggested as the result of the cooperation between asbestos and other cofactors, such as SV40 virus infection. Nevertheless, several cases of MM were associated with environmental exposure to erionite in Turkey, where SV40 was never isolated in MM specimens. We show here that erionite is poorly cytotoxic, induces proliferating signals and high growth rate in human mesothelial cells (HMC). Long term exposure to erionite, but not to asbestos fibers, transforms HMC in vitro, regardless of the presence of SV40 sequences, leading to foci formation in cultured monolayers. Cells derived from foci display constitutive activation of Akt, NF-kappaB and Erk1/2, show prolonged survival and a deregulated cell cycle, involving cyclin D1 and E overexpression. Our results reveal that erionite is able per se to turn HMC into transformed highly proliferating cells and disclose the carcinogenic properties of erionite, prompting for a careful evaluation of environmental exposure to these fibers. The genetic predisposition to the effect of erionite is a separate subject for investigation.
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Affiliation(s)
- P Bertino
- Department of DISCAFF and DFB Center, University of Piemonte Orientale A. Avogadro, Novara, Italy
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Pisano C, Vesci L, Bucci F, Guglielmi M, Marconi A, Ferrara F, Foderà R, Aulicino C, Zavatto S, Carminati P. 446 POSTER ST1968: a new camptothecin analogue endowed with distinctive pharmacological properties. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)70451-7] [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] Open
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Proietti L, Bonanno G, Vasta N, Augeri M, Marconi A, Stivala F. [Airborne contact dermatitis]. Clin Ter 2006; 157:531-9. [PMID: 17228853] [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: 05/13/2023]
Abstract
A comprehensive bibliographical retrieval of case reports on "airborne contact dermatitis" (ACD) was performed. The present review deals with the first cases published in 1986, 1991, 2001 by Huygens as well as by Dooms-Goossens, and continues with the other pertaining clinical presentations until to day. Solid particles, rather than gases or droplets, are the most frequently reported causes of ACD.
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Affiliation(s)
- L Proietti
- Dipartimento di Medicina Interna e Patologie Sistemiche, Sezione di Medicina del Lavoro, Università degli Studi di Catania, Italia
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Marconi A, Panza MC, Bonnet-Duquennoy M, Lazou K, Kurfurst R, Truzzi F, Lotti R, De Santis G, Dumas M, Bonte F, Pincelli C. Expression and function of neurotrophins and their receptors in human melanocytes. Int J Cosmet Sci 2006; 28:255-61. [DOI: 10.1111/j.1467-2494.2006.00321.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Marconi A. [Fine, ultrafine and nano- particles in the living and working setting: potential health effects and measurement of inhalation exposure]. G Ital Med Lav Ergon 2006; 28:258-65. [PMID: 17144413] [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: 05/12/2023]
Abstract
Recently, experimental evidence has shown that exposure to very fine particles including those ultrafine or nanometric (NP, size < 100 nm) may cause severe health effects after inhalation in ambient and occupational environments (ultrafine particles in urban air, diesel emissions, welding fumes). Although the toxicological mechanisms for these effects have not yet been explained, the considerable body of existing data on occupational and environmental impact of airborne particles provides indications on the characteristics that influence toxicity and dose-response relationships. While for supermicrometric particles it is sufficient measuring exposure in terms of mass, for very fine particles, and in particular for NP, the characteristics that are more biologically relevant include the number, size, surface area, shape, solubility, and chemical reactivity. The rapidly developing field of nanotechnology, based on the use of a variety of NP (engineered or intentionally produced and with unique and specific properties), will certainly create new exposure scenarios which actually are largely unknown. The concern of potential health impact from the exposure to NP, during the last years has accelerated the development of systems for characterizing the exposures associated to the different potential sources of particles in the submicrometer and nanometer size ranges in both the environment and the workplace. In this review the current problems for characterizing the biologically relevant exposure to very fine and nanometric particles are discussed mainly in the context of occupational aerosols.
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Affiliation(s)
- A Marconi
- Dipartimento Ambiente e Connessa Prevenzione Primaria, Istituto Superiore di Sanità, Roma.
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Carrafiello G, Laganà D, Mangini M, Lumia D, Recaldini C, Bacuzzi A, Marconi A, Mira A, Cuffari S, Fugazzola C. Complications of percutaneous nephrostomy in the treatment of malignant ureteral obstructions: single–centre review. Radiol Med 2006; 111:562-71. [PMID: 16779542 DOI: 10.1007/s11547-006-0051-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2005] [Accepted: 12/01/2005] [Indexed: 10/24/2022]
Abstract
PURPOSE The purpose of this study was to evaluate the incidence and type of complications connected with percutaneous nephrostomy (PCN) deployment by comparing two different techniques. MATERIALS AND METHODS In the last 3 years, 299 procedures of nephrostomy were performed on 201 patients (93 women, 108 men; mean age 65.7 years, range 32-102 years) at our Institute; all patients were affected by malignancy. In 44 cases (14.72%), patients presented grade IV hydronephrosis and in 255 cases (85.28%) grade II-III hydronephrosis. In 68 patients (23.07%), the procedure was carried out under emergency conditions because of the rapid worsening of renal function. All procedures were carried out in the angiography room, with the patient lying in a prone or prone-oblique position, under ultrasound and fluoroscopic guidance. Access to the pyelocalyceal system (intermediate or lower calices) was performed by using a Seldinger technique in 255/299 cases, or a one-step technique (OST) in 44 procedures when grade 4 hydronephrosis was present. Statistical analysis of results was performed using bilateral tests on proportions as well as chi2 test of independence for contingency tables. RESULTS We observed no major complications. All in all, the rate of minor complications was 3.01% (9/299 cases): 8/255 (3.13%) cases with the Seldinger technique; 1/44 (2.27%) with OST. We observed 43/299 (14.4%) dislodgements: 32/255 (10.70%) with the Seldinger technique and 11/44 (3,68%) with OST. In 4/299 (1.33%), rupture of the catheter occurred, and in 2/299 (0.67%), kinking occurred (in all cases with OST). From the statistical analysis, we conclude that the examination technique modifies the percentage of complications; in particular, it significantly (p<0.05) influences complications connected with the catheter but not minor complications. In addition, the system of fixing does not affect the percentage of dislodgements. CONCLUSIONS PCN is a method with a high percentage of technical success with low rate of complications thanks to combined use of sonographic and fluoroscopic guidance for the procedure. The OST technique is indicated for a highly remarkable hydronephrosis and in cases where the catheter is only placed for a short period. The Seldinger technique is carried out in patients with grades II and III hydronephrosis and if the disease is predicted to have a long duration.
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Affiliation(s)
- G Carrafiello
- Radiologia Vascolare e Interventistica--Cattedra di Radiologia, Università degli Studi dell'Insubria, Viale Borri 57, I-21100, Varese, Italy.
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Scatton O, Chiappini F, Riou P, Marconi A, Saffroy R, Bralet MP, Azoulay D, Boucheix C, Debuire B, Uzan G, Lemoine A. Fate and characterization of circulating tumor cells in a NOD/SCID mouse model of human hepatocellular carcinoma. Oncogene 2006; 25:4067-75. [PMID: 16491122 DOI: 10.1038/sj.onc.1209430] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
There is much debate about the way in which epithelial tumors metastasize. It has been proposed that the bone marrow (BM) acts as a tumor cell reservoir. We injected human hepatocellular carcinoma (HCC) cells (Mahlavu cell line) into the livers, circulation or BM of NOD/SCID mice and circulating tumor cells were quantified. When injected under the Glisson capsule, a primary tumor developed and continuously yielded circulating tumor cells. Liver tumor removal led to a very low level of Mahlavu cells both in blood and BM 30 days later. When Mahlavu cells (cultured or from BM of primary mice femurs) were intravenously injected into mice, the number of cells in the bloodstream (BS) steadily decreased, whereas the BM was not significantly colonized. When Mahlavu cells were directly injected into one femur, the controlateral femur was not colonized. Microscopic analysis and a sensitive PCR assay (<1 Mahlavu cell/nuclear cells) both failed to detect human tumor cells in other organs regardless of injection route. In conclusion, our model strongly supports the hypothesis that HCCs continuously release cells into the BS. However, in sharp contrast with the current hypothesis, the BM is not specifically colonized by tumor cells but could store them at a very low level.
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Affiliation(s)
- O Scatton
- Inserm U602, Université Paris XI, Services de Biochimie et de Biologie Moléculaire, Hôpital Universitaire Paul Brousse, Assistance Publique-Hôpitaux de Paris, Villejuif Cedex, France
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Pasetto R, Comba P, Marconi A. Mesothelioma associated with environmental exposures. Med Lav 2005; 96:330-7. [PMID: 16457429] [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: 05/06/2023]
Abstract
BACKGROUND The main sources of environmental, non-occupational exposure to asbestos or asbestiform fibres are: a) industrial plants in which asbestos was used in the production process; b) asbestos "in place" (mainly in buildings); c) contaminated soils. The association of these exposures with increasing risk of mesothelioma has been documented since 1960 in many places. OBJECTIVES AND METHODS The present paper is aimed at describing the main results of studies performed in the locations with soils naturally contaminated with asbestos or asbestiform fibres. Environmental exposure data and asbestos-related health outcomes, mainly mesothelioma, are analyzed through a review of the literature. RESULTS The sites with asbestos or other mesotheliomatogenous fibres in soils are characterized by low concentration levels of airborne fibres. Furthermore, exposure levels may increase when specific activities are carried out (mainly related to building construction), involving mechanical disturbance of fibre-containing materials. The type of fibres found are mainly amphiboles (tremolite). The population at risk of exposure is the general population, which can be exposed from birth. In these sites, the sex ratio of mesothelioma cases is close to 1.0 and the average age of cases ranges from 50 to 60 years. CONCLUSIONS Both "natural"and industrial environmental asbestos or asbestiform fibre exposures increase potential risk for mesothelioma. Strategies of environmental reclamation and risk communication should be implemented in these areas.
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Affiliation(s)
- R Pasetto
- Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Rome.
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Duparc F, Noyon M, Ozeel J, Gerometta A, Michot C, Tadjalli M, Moslemy H, Safaei S, Heiman A, Wish-Baratz S, Melnikov T, Smoliar E, Hakan AY, Yucel F, Kachlík DK, Pešl MP, Báča VB, Stingl JS, Kachlík KD, Čech ČP, Báča BV, Mompeó B, Marrero-Rodriguez A, Zeybek A, Sağlam B, Çikler E, Çetinel Ş, Ercan F, Şener G, Kawawa Y, Kohda E, Tatsuya T, Moroi M, Kunimasa T, Nagamoto M, Terada H, Labuschagne BCJ, van der Krieke TJ, Hoogland PV, Muller CJF, Lyners R, Vorster W, Matusz P, Zaboi DE, Xu SC, Tu LL, Wang Q, Zhang M, Han H, Tao W, Jiao Y, Pang G, Aydin ME, Kopuz C, Demir MT, Yildirim M, Kale A, Ince Y, Khamanarong K, Jeeravipoolvarn P, Chaijaroonkhanarak W, Gawgleun W, Fujino T, Uz A, Apaydin N, Bozkurt M, Elhan A, Sheibani MT, Adibmoradi M, Jahovic N, Alican I, Erkanli G, Arbak S, Karakaş S, Taşer F, Güneş H, Yildiz Y, Yazici Y, Aland RC, Kippers V, Song WC, Park SH, Shin C, Koh KS, Russo G, Pomara F, Veca M, Cacciola F, Martorana U, Gravante G, Tobenas-Dujardin AC, Laquerrière A, Muller JM, Fréger P, López-Serna N, Álvarez-González E, Torres-Gonzàlez V, Laredo-López G, Esparza-González GV, Álvarez-Cantú R, Garza-González CE, Guzmán-López S, Aldur MM, Çelik HH, Sürücü S, Denk C, Yang HJ, Gil YC, Kim TJ, Lee HY, Lee WJ, Lee H, Hu KS, Akita K, Kim HJ, Jung HS, Gurbuz H, Balik S, Wavreille G, Chantelot C, Demondion X, Fontaine C, Çavdar S, Yalin A, Saka E, Özdoǧmuş Ö, Çakmak Ö, Elevli L, Saǧlam B, Coquerel-Beghin D, Milliez PY, Lemierre G, Oktem G, Vatansever S, Ayla S, Uysal A, Aktas S, Karabulut B, Bilir A, Uslu S, Aktug H, Yurtseven ME, Celik HH, Tatar I, Surucu S, Karaduman A, Tunali S, Neuhüttler S, Kröll A, Moriggl B, Brenner E, Loukas M, Arora S, Louis RG, Fogg QA, Wagner T, Tedman RA, Ching HY, Eze N, Bottrill ID, Blyth P, Faull RLM, Vuletic J, Elizondo-Omaña RE, Rodríguez MAG, López SG, de la Garza OT, Liu YH, Zhang KL, Lu DH, Kwak HH, Park HD, Youn KH, Kang HJ, Kang HC, Han SH, Ikiz ZAA, Ucerler H, Uygur M, Kutoglu T, Dina C, Iliescu D, Şapte E, Bordei P, Lekšan I, Marcikić M, Radić R, Nikolić V, Kurbel S, Selthofer R, Báča V, Doubková A, Kachlík D, Stingl J, Džupa V, Grill R, Nam YS, Paik DJ, Shin CS, Kim SJ, Kim DG, Jin CS, Kim DI, Lee UY, Kwak DS, Lee JH, Han CH, Carpino A, Rago V, Romeo F, Carani C, Andò S, Arican RY, Coskun N, Sarikcioglu L, Sindel M, Arican YR, Altun U, Ozsoy U, Oguz N, Yildirim FB, Nakajima K, Duygulu E, Aydin H, Gurer EI, Ozkan O, Tuzuner S, Özsoy U, Çubukçu S, Demirel BM, Akkin SM, Marur T, Weiglein AH, Maghiar TT, Borza C, Bumbu A, Bumbu G, Polle G, Auquit-Auckbur I, Dujardin F, Biga N, Olivier E, Defives T, Ghazali S, Anastasi G, Rizzo G, Favaloro A, Miliardi D, Giacobbe O, Santoro G, Trimarchi F, Cutroneo G, Govsa F, Bilge O, Ozer MA, Erdogmus S, Grizzi F, Pelillo F, Mori M, Franceschini B, Portinaro N, Godlewski G, Viala M, Rouanet JP, Prat D, Rahmé ZS, Prudhomme M, Eken E, Kwiatkowska M, Liegmann J, Chmielewski R, Grimmond J, Kwiatkowski M, Schintler MV, Windisch G, Wittgruber G, Prandl EC, Prodinger P, Anderhuber F, Scharnagl E, Gerbino A, Buscemi M, Leone A, Mandracchia R, Peri G, Lipari D, Farina-Lipari E, Valentino B, D’Arpa S, Cordova A, Bucchieri F, Ribbene A, David S, Palma A, Davies DE, Haitchi HM, Holgate ST, La Rocca G, Anzalone R, Campanella C, Rappa F, Bartolotta T, Cappello F, Bellafiore M, Sivverini G, Palumbo D, Macaluso F, Farina F, Di Felice V, Montalbano A, Ardizzone N, Marcianò V, Zummo G, Tanyeli E, Üzel M, Carini F, Scardina GA, Varia P, Valenza V, Messina P, Meiring JH, Schumann C, Whitmore I, Greyling LM, Hamel O, Hamel A, Robert R, Garçon M, Lagier S, Blin Y, Armstrong O, Rogez JM, Le Borgne J, Ifrim CF, Maghiar A, Botea M, Ifrim M, Pop O, Sandor M, Behdadipour Z, Saberi M, Esfandiary E, Gentile C, Marconi A, Livrea MA, Uzan G, D’Alessio P, Ridola CG, Grassi N, Pantuso G, Bottino A, Cacace E, Li Petri S, Di Gaudio F, Guercio G, Latteri MA, Nobile D, Cipolla C, Caruso G, Salvaggio G, Lo Cascio A, Fatta G, Lagalla R, Campisi A, Verderame F, Martegani A, Cardinale AE, Luedinghausen MV. Poster presentation. Surg Radiol Anat 2005. [DOI: 10.1007/bf03371476] [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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Ulusakarya A, Haghighi F, Juin F, Marconi A, Liu XH, Machover D, Uzan G. High number of peripheral blood circulating endothelial progenitor cells (EPCs) in a patient with erythropoietin (EPO) producing renal carcinoma (RC). J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.9707] [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: 11/20/2022] Open
Affiliation(s)
- A. Ulusakarya
- Paul Brousse Hosp, Villejuif, France; Inserm Unit 602, Villejuif, France
| | - F. Haghighi
- Paul Brousse Hosp, Villejuif, France; Inserm Unit 602, Villejuif, France
| | - F. Juin
- Paul Brousse Hosp, Villejuif, France; Inserm Unit 602, Villejuif, France
| | - A. Marconi
- Paul Brousse Hosp, Villejuif, France; Inserm Unit 602, Villejuif, France
| | - X.-H. Liu
- Paul Brousse Hosp, Villejuif, France; Inserm Unit 602, Villejuif, France
| | - D. Machover
- Paul Brousse Hosp, Villejuif, France; Inserm Unit 602, Villejuif, France
| | - G. Uzan
- Paul Brousse Hosp, Villejuif, France; Inserm Unit 602, Villejuif, France
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Marconi A, Terracina M, Fila C, Franchi J, Bonté F, Romagnoli G, Maurelli R, Failla CM, Dumas M, Pincelli C. Expression and function of neurotrophins and their receptors in cultured human keratinocytes. J Invest Dermatol 2004; 121:1515-21. [PMID: 14675204 DOI: 10.1111/j.1523-1747.2003.12624.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Whereas nerve growth factor has been extensively studied in human keratinocytes, little is known on the role of other members of the neurotrophin family. We investigated the expression and function of neurotrophins and neurotrophin receptors in cultured human keratinocytes. We demonstrated by reverse transcription-polymerase chain reaction that keratinocytes synthesize neurotrophin-3, brain-derived neurotrophic factor, and neurotrophin-4/5. These cells also express tyrosinase kinase A and C, the nerve growth factor and neuro-trophin-3 high-affinity receptors, respectively. On the other hand, only the truncated extracellular isoform of tyrosinase kinase B, the high-affinity brain-derived neurotrophic factor and neurotrophin-4/5 receptor, is detected in keratinocytes. Moreover, neurotrophin-3, brain-derived neurotrophic factor, and neurotrophin-4/5 proteins are secreted by human keratinocytes at low levels. Keratinocyte stem cells synthesize the highest amounts of nerve growth factor, while they secrete higher levels of nerve growth factor as compared with transit amplifying cells. Neurotrophin-3 stimulates keratinocyte proliferation, where brain-derived neurotrophic factor or neurotrophin-4/5 does not exert any effect on keratinocyte proliferation. Addition of neurotrophin-3 slightly upregulates the secretion of nerve growth factor, whereas nerve growth factor strongly augments neurotrophin-3 release. Ultraviolet B irradiation downregulates nerve growth factor, whereas it augments neurotrophin-3 and neurotrophin-4/5 protein levels. Ultraviolet A irradiation increases the level of neurotrophin-3, whereas it does not exert any effect on the other neurotrophins. Finally, neurotrophins other than nerve growth factor fail to protect human keratinocytes from ultraviolet B-induced apoptosis. This work delineates a functional neurotrophin network, which may contribute to epidermal homeostasis.
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Affiliation(s)
- A Marconi
- Institute of Dermatology, University of Modena and Reggio Emilia, Modena, Italy
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Littger R, Alke A, Tewes B, Gropp F, Asai T, Watanabe K, Kuromi K, Kurohane K, Ogino K, Taki T, Tsukada H, Nakayama J, Oku N, Babai I, Matyas G, Baranji L, Milosevits J, Alving CR, Bendas G, Rothe U, Scherphof GL, Kamps JAAM, Kessner S, Rothe U, Bendas G, Carafa M, Di Stefano A, Sozio P, Cacciatore I, Mosciatti B, Santucci E, Choice E, Harvie P, Galbraith T, Zunder E, Dutzar B, Anklesaria P, Paul R, Cocquyt J, De Cuyper M, Van der Meeren P, Cruz MEM, Gaspar MM, Silva MT, Dathe M, Nikolenko H, Wessolowski A, Schmieder P, Beyermann M, Bienert M, Santos ND, Cox KA, Allen C, Gallagher RC, Ickenstein L, Mayer LD, Bally MB, Fischer S, Margalit R, Freisleben HJ, Garidel P, Chen HC, Moore D, Mendelsohn R, Garidel P, Keller M, Hildebrand A, Blume A, Girão da Cruz MT, Simões S, Pedroso de Lima MC, Graser A, Nahde T, Fahr A, Müller R, Müller-Brüsselbach S, Harvie P, Dutzar B, Choice E, Cudmore S, O'Mahony D, Anklesaria P, Paul R, Hoving S, van Tiel ST, Seynhaeve ALB, Ambagtsheer G, Eggermont AMM, ten Hagen TLM, Høyrup P, Jensen SS, Jørgensen K, Iden D, Kuang H, Mullen P, Jacobs C, Roben P, Stevens T, Lollo C, Ishida T, Maeda R, Masuda K, Ichihara M, Kiwada H, Jung K, Reszka R, Kaiser N, Ohloff I, Linser-Haar S, Massing U, Schubert R, Kan P, Tsao CW, Chen WK, Wang AJ, Kimpfler A, Gerber C, Wieschollek A, Bruchelt G, Schubert R, Kobayashi T, Okada Y, Ishida T, Sone S, Harashima H, Maruyama K, Kiwada H, Kondo M, Lee CM, Tanaka T, Su W, Kitagawa T, Ito T, Matsuda H, Murai T, Miyasaka M, Junji K, Kondo M, Asai T, Ogino K, Taki T, Tsukada H, Baba K, Oku N, Koning GA, Wauben MHM, ten Hagen TLM, Vestweber D, Everts M, Kok RJ, Schraa AJ, Molema G, Schiffelers RM, Storm G, Kristl J, Šentjurc M, Abramović Z, Landry S, Perron S, Bestman-Smith J, Désormeaux A, Tremblay MJ, Bergeron MG, Madeira C, Loura LMS, Fedorov A, Prieto M, Aires-Barros MR, Marques CM, Simões SI, Cruz ME, Cevc G, Martins MB, Moreira JN, Gaspar R, Allen TM, Esposito C, Ortaggi G, Bianco A, Bonadies F, Malizia D, Napolitano R, Cametti C, Mossa G, Endert G, Essler F, Lutz S, Panzner S, Pastorino F, Brignole C, Pagnan G, Moase EH, Allen TM, Ponzoni M, Pavelic Z, Škalko-Basnet N, Jalšenjak I, Penacho N, Simões S, Pedroso de Lima MC, Pisano C, Bucci F, Serafini S, Martinelli R, Cupelli A, Marconi A, Ferrara FF, Santaniello M, Critelli L, Tinti O, Luisi P, Carminati P, Santaniello M, Bucci F, Tinti O, Pisano C, Critelli L, Galletti B, Luisi P, Carminati P, Sauer I, Nikolenko H, Dathe M, Schleef M, Voß C, Schmidt T, Flaschel E, König S, Wenger T, Dumond J, Bogetto N, Reboud-Ravaux M, Schramm HJ, Schramm W, Sheynis T, Rozner S, Kolusheva S, Satchell D, Jelnik R, Shigeta Y, Imanaka H, Ando H, Makino T, Kurohane K, Oku N, Baba N, Shimizu K, Asai T, Takada M, Baba K, Namba Y, Oku N, Simberg D, Danino D, Talmon Y, Minsky A, Ferrari ME, Wheeler CJ, Barenholz Y, Takada M, Shimizu K, Kuromi K, Asai T, Baba K, Oku N, Takeuchi Y, Kurohane K, North JR, Namba Y, Nango M, Oku N, Tewes B, Köchling T, Deissler M, Kühl C, Marx U, Strote G, Gropp F, Qualls MM, Kim JM, Thompson DH, Zhang ZY, Shum P, Collier JH, Hu BH, Ruberti JW, Messersmith PB, Thompson DH, Tsuruda T, Nakade A, Sadzuka Y, Hirota S, Sonobe T, Vorauer-Uhl K, Wagner A, Katinger H, Wagner A, Vorauer-Uhl K, Katinger H, Weeke-Klimp AH, Bartsch M, Meijer DKF, Scherphof GL, Kamps JAAM, Zeisig R, Walther W, Reß A, Fichtner I, Zschörnig O, Schiller J, Süß M, Bergmeier C, Arnold K, Nchinda G, Überla K, Zschörnig O. Poster Abstracts. J Liposome Res 2003. [DOI: 10.1081/lpr-120017490] [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: 11/03/2022]
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Abstract
Naftidrofuryl is a selective inhibitor of the 5-HT2 receptor expressed on human endothelial cells. This drug has been used over the years to cope with cerebral or peripheral ischemic accidents; however, no clear mechanism of action of this molecule has been highlighted to explain its vascular effects. In the present work, we demonstrate that the involvement of nitric oxide can account for the effects of naftidrofuryl. Indeed, naftidrofuryl potently inhibited the TNF-alpha-triggered increase of intercellular adhesion molecule-1 (ICAM-1) expression as well as stress fiber formation in human umbilical vein endothelial cells (HUVEC). Moreover, naftidrofuryl induced the expression of type II nitric oxide synthase (NOS II) messenger and protein, leading to a noticeable increase in nitric oxide synthesis. Furthermore, using the specific NOS II inhibitor 1400W, we verified that the observed effects of naftidrofuryl were NOS II-dependent. The biology of nitric oxide accounts for the reduction of the vasospasm associated with stroke and the strong inhibition of platelet aggregation. In conclusion, our work provides evidence for the inhibition of leukocyte recruitment by downregulation of CD54/ICAM-1, an additional key factor to be dealt with during thrombotic accidents. Importantly, it also highlights a novel NOS II-dependent mechanism of action for naftidrofuryl.
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Affiliation(s)
- A Marconi
- Inserm U506, Hôpital Paul Brousse, Villejuif, France
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39
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Donati D, Ambrosini A, Marconi A, Mazzola E. Calcineurin inhibitor-free immunosuppressive regimen for marginal donors/recipients of kidney transplantation. Transplant Proc 2002; 34:1678-80. [PMID: 12176532 DOI: 10.1016/s0041-1345(02)02977-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- D Donati
- Renal Transplant Unit, Azienda Ospedaliera Ospedale di Circolo, Viale Borri 57, 21100 Varese, Italy
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40
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Davoli C, Marconi A, Serafino A, Iannoni C, Marcheggiano A, Ravagnan G. Expression of nerve growth factor-like polypeptides and immunoreactivity related to the two types of neurotrophin receptors in earthworm tissues. Cell Mol Life Sci 2002; 59:527-39. [PMID: 11964130 DOI: 10.1007/s00018-002-8444-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Nerve growth factor (NGF) belongs by sequence homology to the neurotrophins, a family of proteins binding the same p75 receptor and closely related members of the Trk family of receptor tyrosine kinases. Fundamental in the vertebrate nervous system, neurotrophin signals have also been suggested as essential for relatively complex nervous systems occurring in invertebrate species that live longer than Caenorhabditis elegans and Drosophila melanogaster. Mammalian neurotrophins have been found to influence invertebrate neuronal growth. However, there are only a few data on the presence of molecules related to neurotrophin signalling components in invertebrates. Our studies provide evidence that analogues of neurotrophins and neurotrophin receptors are expressed in Eisenia foetida earthworms. In particular, NGF-like and Trk-like immunoreactive proteins are both expressed in the nervous system, whereas p75-like positivity identifies tubular structures associated with dorsal pores that are involved in the earthworm response to mechanical irritation or stress.
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Affiliation(s)
- C Davoli
- Institute of Neurobiology and Molecular Medicine, CNR, Rome, Italy.
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41
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Maroldi R, Farina D, Palvarini L, Marconi A, Gadola E, Menni K, Battaglia G. Computed tomography and magnetic resonance imaging of pathologic conditions of the middle ear. Eur J Radiol 2001; 40:78-93. [PMID: 11704355 DOI: 10.1016/s0720-048x(01)00376-x] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Computed tomography (CT) is an excellent technique for demonstrating even small abnormalities of the thin and complex bony structures of the middle ear. For this reason, it is the modality of choice in the study of conductive hearing loss (CHL). However, not every patient complaining of CHL requires a CT study. In fact, established indications encompass complex conditions, such as the complications of acute and chronic otomastoiditis, the postoperative ear in chronic otomastoiditis or in the localization of prosthetic devices, and the assessment of congenital or vascular anomalies. Particularly, the precise extent of bone erosion associated with cholesteatoma is correctly demonstrated by high resolution CT. Conversely, although fistulization through the tegmen tympani or the posterior wall of temporal bone is usually detectable by CT, the actual involvement of meninges and veins are better assessed by magnetic resonance (MR). MR is also indicated when complicated inflammatory lesions are suspected to extend into the inner ear or towards the sigmoid sinus or jugular vein. Neoplasms arising from or extending into the middle ear require the use of both techniques as their combined data provide essential information. Most important data for surgical planning concern the destruction of thin bony structures and the relationships of the lesion with the dura and surrounding vessels. DSA and interventional vascular techniques maintain an essential role in the presurgical work-up and embolization of paragangliomas extended into the middle ear.
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Affiliation(s)
- R Maroldi
- Department of Radiology, University of Brescia, P.zzale Spedali Civili 1, I-25123 Brescia, Italy.
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42
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Marconi A. [Estimating the number of exposures to asbestos at work in Italy: the inconsistency of the existing evaluations]. Med Lav 2001; 92:355. [PMID: 11771356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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43
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Diociaiuti M, Balduzzi M, De Berardis B, Cattani G, Stacchini G, Ziemacki G, Marconi A, Paoletti L. The two PM(2.5) (fine) and PM(2.5-10) (coarse) fractions: evidence of different biological activity. Environ Res 2001; 86:254-262. [PMID: 11453676 DOI: 10.1006/enrs.2001.4275] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Recent studies have shown that an increased concentration of environmental particulate matter (PM(10)) is related to many respiratory diseases. One major issue is whether the toxicity of the particles resides in some particular fraction as defined by chemical composition and size. The overall purpose of this study was to compare the in vitro toxicity of coarse (PM(2.5-10)) and fine (PM(2.5)) particulate matter, collected in an urban area of Rome, in relation to their physicochemical composition as assessed by analytic electron microscopy and atomic absorption spectroscopy. In particular, our aim was to evaluate the importance of particle physicochemical components in the induced toxicity. The in vitro toxicity assays used included human red blood cell hemolysis, cell viability, and nitric oxide (NO) release in the RAW 264.7 macrophage cell line. The hemolytic potential has been widely used as an in vitro toxicity screen and as a useful indicator of oxidative damage to biomembranes. We found that human erythrocytes underwent dose-dependent hemolysis when they were incubated with varying concentrations of fine and coarse particles. The hemolytic potential was greater for the fine particles than for the coarse particles in equal mass concentration. However, when data were expressed in terms of PM surface per volume unit of suspension, the two fractions did not show any significant hemolytic differences. This result suggested that the oxidative stress induced by PM on the cell membranes could be due mainly to the interaction between the particle surfaces and the cell membranes. RAW 264.7 macrophage cells challenged with particles showed decreased viability and an increased release of NO, a key inflammatory mediator, and both effects were not dose dependent in the tested concentration range. The fine particles were the most effective and the differences between the two size fractions in inducing these biological effects remained unchanged when the basis of comparison was changed from weight to surface measures. It seemed therefore that these differences relied on the different physicochemical nature of the particles. The main chemical difference between the two fractions resided in a greater abundance of C-rich particles with S traces in the fine fraction. Therefore, we cautiously suggest a role for these particles in the induction of toxicity.
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Affiliation(s)
- M Diociaiuti
- Laboratorio di Ultrastrutture, Istituto Superiore di Sanità, Rome, 00161, Italy
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Marconi A, Cavariani F, Carai A, Cacchioli G, Papandrea F, Cacchioli E. [Assessment of exposure to ceramic fibers during insulation operations in a thermoelectric power plant]. Med Lav 2001; 92:263-71. [PMID: 11676188] [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: 02/22/2023]
Abstract
Refractory ceramic fibre concentrations were measured during renewal of the insulation lining of a turbine located in a large power plant. Personal and stationary samples were collected during operations, which involved installing and ripping out standard and pre-coated and pre-shaped ceramic fibre blankets. Operation-length average (OLA) and TWA exposure levels were about 500 F/l and about 100 F/l, respectively, for installing and ripping out operations where non-coated blankets were handled. In these cases specific task-associated personal exposure levels up to 1000 F/l were measured. Personal exposure levels up to as much as 10 times lower were observed in operations involving pre-coated and pre-shaped blankets. The average concentration levels from area samples were always lower than those from personal samples, and showed a downward gradient with the distance from the source. Given the current carcinogenic classification of refractory ceramic fibres (class 2, European), the necessity is stressed of introducing adequate working practices and control measures (adoption of pre-coated and pre-shaped fibrous materials whenever possible, confinement of working area, use of local air extractions ventilation with HEPA filter unit, use of garments for personal protection and respirators, use of wetting or binding liquids prior to removal, quick cleaning of debris from working area), in order to keep the exposure levels and the number of potentially exposed workers to the minimum.
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Affiliation(s)
- A Marconi
- Laboratorio di Igiene Ambientale, Istituto Superiore di Sanità, Viale Regina Elena 299, 00191 Roma.
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Marconi A, Menichini E, Ziemacki G, Cattani G, Stacchini G. [Concentrations of PM10 and PM2.5 particulate material in the atmosphere of Rome]. Ann Ist Super Sanita 2001; 36:285-9. [PMID: 11293297] [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: 02/19/2023]
Abstract
Starting from 1993, various monitoring campaigns were carried out in Rome to determine PM10 and PM2.5. Their results are presented here cumulatively, with the aim of obtaining preliminary information on relationships among these size fractions, in various seasonal periods and in two sites with different characteristics (a road site and an urban background site in a public park). Particles were collected on filter and gravimetrically determined. Both PM10 and PM2.5 concentrations show temporal fluctuations with higher values during winter months. Background concentrations are lower than those contemporaneously measured at the road site only to a limited extent (10-17%). The contribution of PM2.5 to PM10 during the winter semester is higher than during the summer one (67 vs. 52%), with no substantial intersite differences.
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Affiliation(s)
- A Marconi
- Laboratorio di Igiene Ambientale, Istituto Superiore di Sanità, Roma
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Fumelli C, Marconi A, Salvioli S, Straface E, Malorni W, Offidani AM, Pellicciari R, Schettini G, Giannetti A, Monti D, Franceschi C, Pincelli C. Carboxyfullerenes protect human keratinocytes from ultraviolet-B-induced apoptosis. J Invest Dermatol 2000; 115:835-41. [PMID: 11069621 DOI: 10.1046/j.1523-1747.2000.00140.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Carboxyfullerene, a water-soluble carboxylic acid derivative of a fullerene, which acts as a free-radical scavenger, was investigated as a protective agent against ultraviolet-light-induced damage in human keratinocytes. First, we demonstrate that carboxyfullerene is not cytotoxic for these cells. In addition, this compound significantly reduces the ultraviolet-B-induced inhibition of keratinocyte proliferation and protects keratinocytes from apoptosis caused by ultraviolet B irradiation in a time- and dose-dependent fashion. Furthermore, the percentage of cells with depolarized mitochondria is significantly lower in ultraviolet-B-irradiated keratinocytes pretreated with carboxyfullerene than in cells provided with diluent alone. Carboxyfullerene also protects human keratinocytes from apoptosis induced by exposure to deoxy-D-ribose, a sugar that causes cell death through a pathway involving oxidative stress. On the other hand, ultraviolet B downregulates bcl-2 levels in human keratinocytes, and carboxyfullerene fails to prevent this effect. These results suggest that carboxy- fullerene protects human keratinocytes from ultraviolet B damage possibly via a mechanism interfering with the generation of reactive oxygen species from depolarized mitochondria without the involvement of bcl-2.
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Affiliation(s)
- C Fumelli
- Department of Neuropsychosensorial Pathology, Section of Dermatology, University of Modena and Reggio Emilia, Italy
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47
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Roman V, Zhao H, Fourneau JM, Marconi A, Dugas N, Dugas B, Sigaux F, Kolb JP. Expression of a functional inducible nitric oxide synthase in hairy cell leukaemia and ESKOL cell line. Leukemia 2000; 14:696-705. [PMID: 10764157 DOI: 10.1038/sj.leu.2401702] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The expression of nitric oxide synthase (NOS) isoforms was investigated in the established ESKOL hairy cell line and in leukemic cells of patients with hairy cell leukemia (HCL). By reverse transcription-polymerase chain reaction (RT-PCR), these cells were found to spontaneously express inducible NOS (iNOS)-specific mRNA, but not endothelial constitutive NOS (ecNOS) mRNA. The iNOS protein was detected by immunofluorescence in the cytoplasm of permeabilized leukemic cells and ESKOL cells, using different anti-iNOS monoclonal antibodies. A protein of 135 kDa was identified by Western blotting in ESKOL and HCL lysates, confirming the presence of an iNOS in these cells. Cytosolic homogenates displayed NOS catalytic activity, as measured by the conversion of 14C-labelled L-arginine into 14C L-citrulline and by detection in situ using the DAF-2DA (diaminofluorescein diacetate) NO-sensitive fluorescent probe. Ligation of CD23 (low affinity IgE receptor) was found to increase iNOS expression in ESKOL and conversely to decrease the percentage of cells undergoing apoptosis, as measured by the percentage of cells expressing annexin V. These results indicate that, as in chronic B cell lymphocytic leukemia cells (B-CLL) a functional iNOS is expressed constitutively in hairy cells that contributes to protecting these tumoral cells from apoptosis.
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MESH Headings
- Amidines/pharmacology
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/pharmacology
- Apoptosis
- Arginine/metabolism
- Benzylamines/pharmacology
- Blotting, Western
- Enzyme Induction
- Enzyme Inhibitors/pharmacology
- Fluorescent Dyes
- Gene Expression Regulation, Leukemic
- Humans
- Leukemia, Hairy Cell/enzymology
- Leukemia, Hairy Cell/pathology
- Microscopy, Fluorescence
- Neoplasm Proteins/antagonists & inhibitors
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Neoplastic Stem Cells/enzymology
- Neoplastic Stem Cells/pathology
- Nitric Oxide/physiology
- Nitric Oxide Synthase/analysis
- Nitric Oxide Synthase/antagonists & inhibitors
- Nitric Oxide Synthase/biosynthesis
- Nitric Oxide Synthase/genetics
- Nitric Oxide Synthase Type II
- Nitric Oxide Synthase Type III
- Nitrites/analysis
- Receptors, IgE/immunology
- Receptors, IgE/physiology
- Reverse Transcriptase Polymerase Chain Reaction
- Tumor Cells, Cultured/enzymology
- Tumor Cells, Cultured/pathology
- omega-N-Methylarginine/pharmacology
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Affiliation(s)
- V Roman
- INSERM U365, Institut Curie, Paris, France
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48
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Zadeh MS, Kolb JP, Geromin D, D'Anna R, Boulmerka A, Marconi A, Dugas B, Marsac C, D'Alessio P. Regulation of ICAM-1/CD54 expression on human endothelial cells by hydrogen peroxide involves inducible NO synthase. J Leukoc Biol 2000; 67:327-34. [PMID: 10733092 DOI: 10.1002/jlb.67.3.327] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Expression of the inducible isoform of nitric oxide synthase (iNOS) is stimulated by cytokines in human epithelial cells. This work indicates that incubation of human umbilical cord endothelial cells with combinations of interleukin-1beta, tumor necrosis factor alpha, and interferon-gamma stimulated the synthesis of iNOS mRNA, as detected by reverse transcriptase-polymerase chain reaction. It is important to note that 50, 100, and 200 microM hydrogen peroxide was able to stimulate iNOS directly. Furthermore, 100 microM H2O2 enhanced synthesis of the oxidation products, nitrite (NO2-) and nitrate (NO3-) at 12 and 36 h. iNOS protein, detected by Western blot analysis, as well as L-citrulline levels, were also increased. When endothelial cell monolayers were incubated for 1 h with 100 microM H2O2 and subsequently with cytokines, iNOS mRNA was further augmented. Under the same conditions, we regularly observed an inhibition (25%) of intercellular adhesion molecule-1 (ICAM-1/CD54) expression. The latter was reversed when the NOS inhibitor N(G)-monomethyl-L-arginine was added, as shown by flow cytometry. These data suggest a specific effect of endogenous hydroperoxides on the biosynthesis and processing of the human endothelial iNOS isoform. We propose that H2O2 induces a temporary NO-dependent modulation of adhesion molecule expression to limit the tissue destruction that accompanies the vascular recruitment of leukocytes.
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Affiliation(s)
- M S Zadeh
- INSERM U75 CHU Necker Enfants Malades-156, Paris, France
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49
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Abstract
Biologically active nerve growth factor (NGF) is synthesised and released by proliferating normal human keratinocytes. NGF up-regulates the expression of NGF mRNA in keratinocytes. Keratinocytes express both the low (p75)- and the high-affinity (TrkA) NGF-receptors, which are located in the basal layer of the epidermis. K252, a specific inhibitor of trk phosphorylation, blocks NGF-induced keratinocyte proliferation, in absence of exogenous NGF. Normal keratinocytes over-expressing TrkA proliferate better than control transfectants, while the NGF mimicking anti-Trk antibody induces an increased keratinocyte proliferation in Trk over-expressing cells as compared to mock transfected keratinocytes. In addition, NGF over-expressing keratinocytes proliferate better than mock transfected cells. K252, by blocking TrkA phosphorylation, induces apoptosis in normal keratinocytes, but not in keratinocytes over-expressing bcl-2. Furthermore, NGF transfected keratinocytes are protected from UV-B-induced keratinocyte apoptosis, by maintaining constant levels of Bcl-2 and Bcl-xL . Taken together these results support the concept of an autocrine survival system sustained by NGF and its high-affinity receptor in human keratinocytes. Because NGF and Trk levels are highly expressed in psoriasis. one could speculate that NGF autocrine system plays a role in the mechanisms associated with this and other hyperproliferative skin conditions, including cancer.
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Affiliation(s)
- C Pincelli
- Department of Neuropsychosensorial Pathology, University of Modena and Reggio Emilia, Italy.
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50
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Abstract
Ultraviolet radiation is a potent inducer of apoptosis, whereas autocrine nerve growth factor protects human keratinocytes from programmed cell death. To evaluate the role of nerve growth factor in the mechanisms of ultraviolet B-induced apoptosis, cultured human keratinocytes were ultraviolet B irradiated following pretreatment with K252, a specific inhibitor of the tyrosine kinase high-affinity nerve growth factor receptor. Here we report that the addition of K252 significantly enhanced keratinocyte apoptosis. We then transfected normal human keratinocytes with pNUT-hNGF. Nerve growth factor overexpressing keratinocytes secreted the highest amounts of nerve growth factor in culture supernatants, were more viable, and had a higher rate of proliferation than mock-transfected cells. Whereas ultraviolet B radiation downregulated nerve growth factor mRNA and protein as well as the tyrosine kinase high-affinity nerve growth factor receptor in normal keratinocytes, it failed to do so in nerve growth factor-transfected cells. Moreover, nerve growth factor overexpressing keratinocytes were partially resistant to apoptosis induced by increasing doses of ultraviolet B at 24 and 48 h. These results indicate that downregulation of nerve growth factor function plays an important part in the mechanisms of ultraviolet B-induced apoptosis in human keratinocytes. In addition, ultraviolet B caused a decrease in BCL-2 and BCL-xL expression in mock-transfected keratinocytes, but not in nerve growth factor overexpressing cells. Finally, nerve growth factor prevented the cleavage of the enzyme poly(ADP-ribose) polymerase induced in human keratinocytes by ultraviolet B. These results are consistent with a model whereby the autocrine nerve growth factor protects human keratinocytes from ultraviolet B-induced apoptosis by maintaining constant levels of BCL-2 and BCL-xL, which in turn might block caspase activation.
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Affiliation(s)
- A Marconi
- Department of Neuropsychosensorial Pathology, Section of Dermatology, University of Modena and Reggion Emilia, Modena, Italy
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