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Sciuto R, Rea S, Ungania S, Testa A, Dini V, Tabocchini MA, Patrono C, Soriani A, Palma V, Marconi R, Strigari L. The role of dosimetry and biological effects in metastatic castration-resistant prostate cancer (mCRPC) patients treated with 223Ra: first in human study. J Exp Clin Cancer Res 2021; 40:281. [PMID: 34488829 PMCID: PMC8420003 DOI: 10.1186/s13046-021-02056-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/31/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND 223Ra is currently used for treatment of metastatic castration resistant prostate cancer patients (mCRPC) bone metastases with fixed standard activity. Individualized treatments, based on adsorbed dose (AD) in target and non-target tissue, are absolutely needed to optimize efficacy while reducing toxicity of α-emitter targeted therapy. This is a pilot first in human clinical trial aimed to correlate dosimetry, clinical response and biological side effects to personalize 223Ra treatment. METHODS Out of 20 mCRPC patients who underwent standard 223Ra treatment and dosimetry, in a subset of 5 patients the AD to target and non-target tissues was correlated with clinical effects and radiation-induced chromosome damages. Before each 223Ra administrations, haematological parameters, PSA and ALP values were evaluated. Additional blood samples were obtained baseline (T0), at 7 days (T7), 30 days (T30) and 180 days (T180) to evaluate chromosome damage. After administration WB planar 223Ra images were obtained at 2-4 and 18-24 h. Treatment response and toxicity were monitored with clinical evaluation, bone scan, 18F-choline-PET/CT, PSA value and ALP while haematological parameters were evaluated weekly after 223Ra injection and 2 months after last cycle. RESULTS 1. a correlation between AD to target and clinical response was evidenced with threshold of 20 Gy as a cut-off to obtain tumor control; 2. the AD to red marrow was lower than 2 Gy in all the patients with no apparently correlation between dosimetry and clinical toxicity. 3. a high dose dependent increase of the number of dicentrics and micronuclei during the course of 223Ra therapy was observed and a linear correlation has been found between blood AD (BAD) and number of dicentrics. CONCLUSIONS This study provides some interesting preliminary evidence to be further investigated: dosimetry may be useful to identify a more appropriate 223Ra administered activity predicting AD to target tissue; a dose dependent complex chromosome damage occurs during 223Ra administration and this injury is more evident in heavily pre-treated patients; dosimetry could be used for radioprotection purpose. TRIAL REGISTRATION The pilot study has been approved from the Ethics Committee of Regina Elena National Cancer Institute (N:RS1083/18-2111).
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Affiliation(s)
- Rosa Sciuto
- Nuclear Medicine Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Sandra Rea
- Nuclear Medicine Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Sara Ungania
- Laboratory of Medical Physics, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Antonella Testa
- Division of Health Protection Technologies, ENEA Casaccia Research Center, Rome, Italy
| | - Valentina Dini
- National Center for Innovative Technologies in Public Health, Istituto Superiore di Sanità, Rome, Italy
- INFN, Rome, Italy
| | - Maria Antonella Tabocchini
- National Center for Innovative Technologies in Public Health, Istituto Superiore di Sanità, Rome, Italy
- INFN, Rome, Italy
| | - Clarice Patrono
- Division of Health Protection Technologies, ENEA Casaccia Research Center, Rome, Italy
| | - Antonella Soriani
- Laboratory of Medical Physics, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Valentina Palma
- Division of Health Protection Technologies, ENEA Casaccia Research Center, Rome, Italy
| | - Raffaella Marconi
- Laboratory of Medical Physics, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Lidia Strigari
- Laboratory of Medical Physics, IRCCS Regina Elena National Cancer Institute, Rome, Italy.
- Present address: Department of Medical Physics, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.
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Testa A, Palma V, Patrono C. A NOVEL BIOLOGICAL DOSIMETRY ASSAY AS A POTENTIAL TOOL FOR TRIAGE DOSE ASSESSMENT IN CASE OF LARGE-SCALE RADIOLOGICAL EMERGENCY. Radiat Prot Dosimetry 2019; 186:9-11. [PMID: 30726995 DOI: 10.1093/rpd/ncz001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 12/11/2018] [Indexed: 06/09/2023]
Abstract
In case of mass radiological emergencies, new strategies involving biological and clinical endpoints are requested for an efficient triage classification of casualties. For this purpose, we developed a novel protocol combining the two most established cytogenetic methods used in biological dosimetry (dicentric and micronucleus assays) into a single one, in order to have a time-saving, inexpensive and potentially automatable instrument to be used for triage purposes in case of large-scale radiological events. This method could be considered as a 'three in one' assay allowing the simultaneous scoring of chromosome aberrations and micronuclei on a single slide, and also enabling to discriminate between metaphases in first and second cell division without the Fluorescence plus Giemsa staining. This method needs further validation through inter-comparisons involving biological dosimetry laboratories, to verify its reproducibility. Moreover, the possibility to apply the already existing software for automation for dicentric and micronucleus assays could be also verified.
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Affiliation(s)
- A Testa
- ENEA Casaccia Research Center, Department for Sustainability, Division Health Protection Technologies, Via Anguillarese, 301 Rome, Italy
| | - V Palma
- ENEA Casaccia Research Center, Department for Sustainability, Division Health Protection Technologies, Via Anguillarese, 301 Rome, Italy
| | - C Patrono
- ENEA Casaccia Research Center, Department for Sustainability, Division Health Protection Technologies, Via Anguillarese, 301 Rome, Italy
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Torres P, Diaz J, Arce M, Silva P, Mendoza P, Lois P, Molina A, Owen G, Palma V, Torres V. Influence of the salivary protein histatin-1 on endothelial cell adhesion, migration and angiogenesis. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.844] [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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Abstract
Biological dosimetry is an essential tool for estimating radiation doses received from individuals when the physical dosimetry is not available or inadequate. Early knowledge about the absorbed dose levels in radiation accidents is of paramount importance for selecting the unaffected subjects from those individuals requiring medical evaluation and intervention. A lesson learned from many radiological incidents is the importance to identify the "worried well."Several assays are useful for biological dosimetry approaches, since no one single assay is sufficiently robust for all potential radiation scenarios including early-phase acute exposures, partial-body exposures, and biosampling years after exposure or in case of suspected mixed exposures (radiological and chemicals).The most commonly used biodosimetry methods are based on the evaluation of the radiation-specific dicentric chromosomes (Dic) and micronuclei (MN) in exposed individuals' peripheral blood lymphocytes (PBL).The present chapter does not claim to make an exhaustive and complete picture on the complex world of biodosimetry, to which a large number of specific guidelines for performing laboratory services by the International Organization for Standardization (ISO) are dedicated, but it aims to support the reader in understanding the application of two cytogenetic methods in the individual ionizing radiation dose assessment, suggesting some appropriate scientific sources to consult for each case.
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Affiliation(s)
- Antonella Testa
- Laboratory of Biosafety and Risk Assessment, Division of Health Protection Technologies, ENEA Casaccia Research Center, Rome, Italy.
| | - Valentina Palma
- Laboratory of Biosafety and Risk Assessment, Division of Health Protection Technologies, ENEA Casaccia Research Center, Rome, Italy
| | - Clarice Patrono
- Laboratory of Biosafety and Risk Assessment, Division of Health Protection Technologies, ENEA Casaccia Research Center, Rome, Italy
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Testa A, Ballarini F, Giesen U, Gil OM, Carante MP, Tello J, Langner F, Rabus H, Palma V, Pinto M, Patrono C. Analysis of Radiation-Induced Chromosomal Aberrations on a Cell-by-Cell Basis after Alpha-Particle Microbeam Irradiation: Experimental Data and Simulations. Radiat Res 2018; 189:597-604. [PMID: 29624483 DOI: 10.1667/rr15005.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
There is a continued need for further clarification of various aspects of radiation-induced chromosomal aberration, including its correlation with radiation track structure. As part of the EMRP joint research project, Biologically Weighted Quantities in Radiotherapy (BioQuaRT), we performed experimental and theoretical analyses on chromosomal aberrations in Chinese hamster ovary cells (CHO-K1) exposed to α particles with final energies of 5.5 and 17.8 MeV (absorbed doses: ∼2.3 Gy and ∼1.9 Gy, respectively), which were generated by the microbeam at the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig, Germany. In line with the differences in linear energy transfer (approximately 85 keV/μm for 5.5 MeV and 36 keV/μm for 17.8 MeV α particles), the 5.5 MeV α particles were more effective than the 17.8 MeV α particles, both in terms of the percentage of aberrant cells (57% vs. 33%) and aberration frequency. The yield of total aberrations increased by a factor of ∼2, although the increase in dicentrics plus centric rings was less pronounced than in acentric fragments. The experimental data were compared with Monte Carlo simulations based on the BIophysical ANalysis of Cell death and chromosomal Aberrations model (BIANCA). This comparison allowed interpretation of the results in terms of critical DNA damage [cluster lesions (CLs)]. More specifically, the higher aberration yields observed for the 5.5 MeV α particles were explained by taking into account that, although the nucleus was traversed by fewer particles (nominally, 11 vs. 25), each particle was much more effective (by a factor of ∼3) at inducing CLs. This led to an increased yield of CLs per cell (by a factor of ∼1.4), consistent with the increased yield of total aberrations observed in the experiments.
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Affiliation(s)
- Antonella Testa
- a Territorial and Production Systems Sustainability Department, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Rome, Italy
| | - Francesca Ballarini
- b University of Pavia (Physics Department), via Bassi 6, I-27100 Pavia, Italy.,c INFN (Italian National Institute of Nuclear Physics), Section of Pavia, I-27100 Pavia, Italy
| | - Ulrich Giesen
- d Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
| | - Octávia Monteiro Gil
- e Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Bobadela-LRS, Lisbon, Portugal
| | - Mario P Carante
- b University of Pavia (Physics Department), via Bassi 6, I-27100 Pavia, Italy.,c INFN (Italian National Institute of Nuclear Physics), Section of Pavia, I-27100 Pavia, Italy
| | - John Tello
- b University of Pavia (Physics Department), via Bassi 6, I-27100 Pavia, Italy.,c INFN (Italian National Institute of Nuclear Physics), Section of Pavia, I-27100 Pavia, Italy.,f Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Frank Langner
- d Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
| | - Hans Rabus
- d Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
| | - Valentina Palma
- a Territorial and Production Systems Sustainability Department, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Rome, Italy
| | - Massimo Pinto
- g National Institute of Ionizing Radiation Metrology, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Rome, Italy
| | - Clarice Patrono
- a Territorial and Production Systems Sustainability Department, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Rome, Italy
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Affiliation(s)
- V. Palma
- Department
of Industrial Engineering, University of Salerno, Via Giovanni
Paolo II, 132, 84084 Fisciano, SA, Italy
| | - V. Vaiano
- Department
of Industrial Engineering, University of Salerno, Via Giovanni
Paolo II, 132, 84084 Fisciano, SA, Italy
| | - D. Barba
- Department
of Industrial Engineering, University of Salerno, Via Giovanni
Paolo II, 132, 84084 Fisciano, SA, Italy
| | - M. Colozzi
- KT - Kinetics Technology, Viale Castello Della Magliana 75, 00148 Rome, Italy
| | - E. Palo
- KT - Kinetics Technology, Viale Castello Della Magliana 75, 00148 Rome, Italy
| | - L. Barbato
- KT - Kinetics Technology, Viale Castello Della Magliana 75, 00148 Rome, Italy
| | - S. Cortese
- KT - Kinetics Technology, Viale Castello Della Magliana 75, 00148 Rome, Italy
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Brzozowska B, Ainsbury E, Baert A, Beaton-Green L, Barrios L, Barquinero JF, Bassinet C, Beinke C, Benedek A, Beukes P, Bortolin E, Buraczewska I, Burbidge C, De Amicis A, De Angelis C, Della Monaca S, Depuydt J, De Sanctis S, Dobos K, Domene MM, Domínguez I, Facco E, Fattibene P, Frenzel M, Monteiro Gil O, Gonon G, Gregoire E, Gruel G, Hadjidekova V, Hatzi VI, Hristova R, Jaworska A, Kis E, Kowalska M, Kulka U, Lista F, Lumniczky K, Martínez-López W, Meschini R, Moertl S, Moquet J, Noditi M, Oestreicher U, Orta Vázquez ML, Palma V, Pantelias G, Montoro Pastor A, Patrono C, Piqueret-Stephan L, Quattrini MC, Regalbuto E, Ricoul M, Roch-Lefevre S, Roy L, Sabatier L, Sarchiapone L, Sebastià N, Sommer S, Sun M, Suto Y, Terzoudi G, Trompier F, Vral A, Wilkins R, Zafiropoulos D, Wieser A, Woda C, Wojcik A. RENEB accident simulation exercise. Int J Radiat Biol 2016; 93:75-80. [PMID: 27559844 DOI: 10.1080/09553002.2016.1206230] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE The RENEB accident exercise was carried out in order to train the RENEB participants in coordinating and managing potentially large data sets that would be generated in case of a major radiological event. MATERIALS AND METHODS Each participant was offered the possibility to activate the network by sending an alerting email about a simulated radiation emergency. The same participant had to collect, compile and report capacity, triage categorization and exposure scenario results obtained from all other participants. The exercise was performed over 27 weeks and involved the network consisting of 28 institutes: 21 RENEB members, four candidates and three non-RENEB partners. RESULTS The duration of a single exercise never exceeded 10 days, while the response from the assisting laboratories never came later than within half a day. During each week of the exercise, around 4500 samples were reported by all service laboratories (SL) to be examined and 54 scenarios were coherently estimated by all laboratories (the standard deviation from the mean of all SL answers for a given scenario category and a set of data was not larger than 3 patient codes). CONCLUSIONS Each participant received training in both the role of a reference laboratory (activating the network) and of a service laboratory (responding to an activation request). The procedures in the case of radiological event were successfully established and tested.
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Affiliation(s)
- Beata Brzozowska
- a Stockholm University , Centre for Radiation Protection Research, Department of Molecular Biosciences, The Wenner-Gren Institute , Stockholm , Sweden.,b University of Warsaw , Faculty of Physics, Department of Biomedical Physics , Warsaw , Poland
| | | | - Annelot Baert
- d Faculty of Medicine and Health Sciences , Ghent University , Ghent , Belgium
| | | | | | | | - Celine Bassinet
- g Institut de Radioprotection et de Sûreté Nucléaire , France
| | - Christina Beinke
- h Bundeswehr Institut für Radiobiologie in Verbindung mit der Universtität Ulm , Munich , Germany
| | - Anett Benedek
- i National Public Health Centre - National Research Directorate for Radiobiology & Radiohygiene , Budapest , Hungary
| | - Philip Beukes
- j NRF iThemba LABS - Laboratory for Accelerator Based Sciences , Cape Town , South Africa
| | | | | | - Christopher Burbidge
- m Centro de Ciências e Tecnologias Nucleares , Instituto Superior Técnico, Universidade de Lisboa , Bobadela-LRS , Portugal
| | | | | | | | - Julie Depuydt
- d Faculty of Medicine and Health Sciences , Ghent University , Ghent , Belgium
| | | | - Katalin Dobos
- i National Public Health Centre - National Research Directorate for Radiobiology & Radiohygiene , Budapest , Hungary
| | - Mercedes Moreno Domene
- o Laboratorio de Dosimetría Biológica, Servicio de Oncología Radioterápica , Hospital General Universitario Gregorio Marañón , Madrid , Spain
| | | | - Eva Facco
- q Istituto Nazionale di Fisica Nucleare , Italy
| | | | - Monika Frenzel
- r PROCyTOX, Commissariat à l'Energie Atomique et aux Energies Alternatives , Fontenay-aux-Roses, and Université Paris-Saclay , France
| | - Octávia Monteiro Gil
- m Centro de Ciências e Tecnologias Nucleares , Instituto Superior Técnico, Universidade de Lisboa , Bobadela-LRS , Portugal
| | - Géraldine Gonon
- g Institut de Radioprotection et de Sûreté Nucléaire , France
| | - Eric Gregoire
- g Institut de Radioprotection et de Sûreté Nucléaire , France
| | - Gaëtan Gruel
- g Institut de Radioprotection et de Sûreté Nucléaire , France
| | | | - Vasiliki I Hatzi
- t National Centre for Scientific Research Demokritos , Athens , Greece
| | - Rositsa Hristova
- s National Centre for Radiobiology and Radiation Protection , Bulgaria
| | | | - Enikő Kis
- i National Public Health Centre - National Research Directorate for Radiobiology & Radiohygiene , Budapest , Hungary
| | - Maria Kowalska
- v Central Laboratory for Radiological Protection , Warsaw , Poland
| | - Ulrike Kulka
- w Bundesamt für Strahlenschutz , Oberschleissheim , Germany
| | - Florigio Lista
- n Army Medical and Veterinary Research Center , Rome , Italy
| | - Katalin Lumniczky
- i National Public Health Centre - National Research Directorate for Radiobiology & Radiohygiene , Budapest , Hungary
| | | | | | - Simone Moertl
- z Helmholtz Zentrum München , Oberschleissheim , Germany
| | - Jayne Moquet
- c Public Health England , Chilton , United Kingdom
| | | | | | | | - Valentina Palma
- ab Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile , Italy
| | - Gabriel Pantelias
- t National Centre for Scientific Research Demokritos , Athens , Greece
| | | | - Clarice Patrono
- ab Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile , Italy
| | - Laure Piqueret-Stephan
- r PROCyTOX, Commissariat à l'Energie Atomique et aux Energies Alternatives , Fontenay-aux-Roses, and Université Paris-Saclay , France
| | | | - Elisa Regalbuto
- n Army Medical and Veterinary Research Center , Rome , Italy
| | - Michelle Ricoul
- r PROCyTOX, Commissariat à l'Energie Atomique et aux Energies Alternatives , Fontenay-aux-Roses, and Université Paris-Saclay , France
| | | | - Laurence Roy
- g Institut de Radioprotection et de Sûreté Nucléaire , France
| | - Laure Sabatier
- r PROCyTOX, Commissariat à l'Energie Atomique et aux Energies Alternatives , Fontenay-aux-Roses, and Université Paris-Saclay , France
| | | | | | - Sylwester Sommer
- l Institute of Nuclear Chemistry and Technology , Warsaw , Poland
| | - Mingzhu Sun
- c Public Health England , Chilton , United Kingdom
| | - Yumiko Suto
- ad National Institute of Radiological Sciences , Chiba , Japan
| | - Georgia Terzoudi
- t National Centre for Scientific Research Demokritos , Athens , Greece
| | | | - Anne Vral
- d Faculty of Medicine and Health Sciences , Ghent University , Ghent , Belgium
| | | | | | | | - Clemens Woda
- z Helmholtz Zentrum München , Oberschleissheim , Germany
| | - Andrzej Wojcik
- a Stockholm University , Centre for Radiation Protection Research, Department of Molecular Biosciences, The Wenner-Gren Institute , Stockholm , Sweden.,ae Jan Kochanowski University , Kielce , Poland
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Ainsbury E, Badie C, Barnard S, Manning G, Moquet J, Abend M, Antunes AC, Barrios L, Bassinet C, Beinke C, Bortolin E, Bossin L, Bricknell C, Brzoska K, Buraczewska I, Castaño CH, Čemusová Z, Christiansson M, Cordero SM, Cosler G, Monaca SD, Desangles F, Discher M, Dominguez I, Doucha-Senf S, Eakins J, Fattibene P, Filippi S, Frenzel M, Georgieva D, Gregoire E, Guogyte K, Hadjidekova V, Hadjiiska L, Hristova R, Karakosta M, Kis E, Kriehuber R, Lee J, Lloyd D, Lumniczky K, Lyng F, Macaeva E, Majewski M, Vanda Martins S, McKeever SW, Meade A, Medipally D, Meschini R, M’kacher R, Gil OM, Montero A, Moreno M, Noditi M, Oestreicher U, Oskamp D, Palitti F, Palma V, Pantelias G, Pateux J, Patrono C, Pepe G, Port M, Prieto MJ, Quattrini MC, Quintens R, Ricoul M, Roy L, Sabatier L, Sebastià N, Sholom S, Sommer S, Staynova A, Strunz S, Terzoudi G, Testa A, Trompier F, Valente M, Hoey OV, Veronese I, Wojcik A, Woda C. Integration of new biological and physical retrospective dosimetry methods into EU emergency response plans – joint RENEB and EURADOS inter-laboratory comparisons. Int J Radiat Biol 2016; 93:99-109. [DOI: 10.1080/09553002.2016.1206233] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Elizabeth Ainsbury
- Public Health England Centre for Radiation, Chemical and Environmental Hazards (PHE), Chilton, UK
| | - Christophe Badie
- Public Health England Centre for Radiation, Chemical and Environmental Hazards (PHE), Chilton, UK
| | - Stephen Barnard
- Public Health England Centre for Radiation, Chemical and Environmental Hazards (PHE), Chilton, UK
| | - Grainne Manning
- Public Health England Centre for Radiation, Chemical and Environmental Hazards (PHE), Chilton, UK
| | - Jayne Moquet
- Public Health England Centre for Radiation, Chemical and Environmental Hazards (PHE), Chilton, UK
| | - Michael Abend
- Bundeswehr Institute of Radiobiology (BIR), Munich, Germany
| | - Ana Catarina Antunes
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico (IST/ITN), Universidade de Lisboa, Bobadela-LRS, Portugal
| | | | - Celine Bassinet
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Paris, France
| | - Christina Beinke
- Bundeswehr Institute of Radiobiology affiliated to the University of Ulm (UULM), Munich, Germany
| | | | - Lily Bossin
- Public Health England Centre for Radiation, Chemical and Environmental Hazards (PHE), Chilton, UK
- Durham University (DUR), Durham, UK
| | - Clare Bricknell
- Public Health England Centre for Radiation, Chemical and Environmental Hazards (PHE), Chilton, UK
| | - Kamil Brzoska
- Institute of Nuclear Chemistry and Technology (INCT), Warsaw, Poland
| | - Iwona Buraczewska
- Institute of Nuclear Chemistry and Technology (INCT), Warsaw, Poland
| | | | - Zina Čemusová
- Státní ústav radiační ochrany (SÚRO), Prague, Czech Republic
| | | | | | - Guillaume Cosler
- Institut de Recherche Biomédicale des Armées (IRBA), Paris, France
| | | | | | - Michael Discher
- Salzburg University Department of Geography and Geology, Salzburg, Austria
| | | | | | - Jon Eakins
- Public Health England Centre for Radiation, Chemical and Environmental Hazards (PHE), Chilton, UK
| | | | | | - Monika Frenzel
- PROCyTOX, Commissariat à l’Energie Atomique et aux Energies Alternatives, Université Paris-Saclay (CEA), Fontenay-aux-Roses, France
| | - Dimka Georgieva
- National Center of Radiobiology and Radiation Protection (NCRRP), Bulgaria
| | - Eric Gregoire
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Paris, France
| | | | | | | | - Rositsa Hristova
- National Center of Radiobiology and Radiation Protection (NCRRP), Bulgaria
| | - Maria Karakosta
- Laboratory of Health Physics, Radiobiology & Cytogenetics Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety National Center for Scientific Research “Demokritos” (NCSRD), Greece
| | - Enikő Kis
- National Public Health Centre – National Research Institute for Radiobiology and Radiohygiene (NRIRR), Hungary
| | - Ralf Kriehuber
- Radiation Biology Unit Forschungszentrum Jülich GmbH (FzJ), Jülich, Germany
| | - Jungil Lee
- Korea Atomic Energy Research Institute (KAERI), Daejeon, South Korea
| | - David Lloyd
- Public Health England Centre for Radiation, Chemical and Environmental Hazards (PHE), Chilton, UK
| | - Katalin Lumniczky
- National Public Health Centre – National Research Institute for Radiobiology and Radiohygiene (NRIRR), Hungary
| | - Fiona Lyng
- Dublin Institute of Technology (DIT), Dublin, Ireland
| | - Ellina Macaeva
- Belgian Nuclear Research Centre (SCK-CEN), Mol, Belgium
- Ghent University (GU), Ghent, Belgium
| | | | - S. Vanda Martins
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico (IST/ITN), Universidade de Lisboa, Bobadela-LRS, Portugal
| | | | - Aidan Meade
- Dublin Institute of Technology (DIT), Dublin, Ireland
| | | | | | - Radhia M’kacher
- PROCyTOX, Commissariat à l’Energie Atomique et aux Energies Alternatives, Université Paris-Saclay (CEA), Fontenay-aux-Roses, France
| | - Octávia Monteiro Gil
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico (IST/ITN), Universidade de Lisboa, Bobadela-LRS, Portugal
| | - Alegria Montero
- Radiation Protection Service, IIS La Fe, Health Research Institute (LAFE), Spain
| | - Mercedes Moreno
- Laboratorio de Dosimetría Biológica, Servicio de Oncología Radioterápica, Hospital General Universitario Gregorio Marañón (SERMAS), Spain
| | | | - Ursula Oestreicher
- Bundesamt fuer Strahlenschutz (BfS), Department Radiation Protection and Health, Neuherberg, Germany
| | - Dominik Oskamp
- Radiation Biology Unit Forschungszentrum Jülich GmbH (FzJ), Jülich, Germany
| | | | - Valentina Palma
- Laboratory of Biosafety and Risk Assessment Division of Health Protection Technologies (ENEA) Casaccia Research Center, Italy
| | - Gabriel Pantelias
- Laboratory of Health Physics, Radiobiology & Cytogenetics Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety National Center for Scientific Research “Demokritos” (NCSRD), Greece
| | - Jerome Pateux
- Institut de Recherche Biomédicale des Armées (IRBA), Paris, France
| | - Clarice Patrono
- Laboratory of Biosafety and Risk Assessment Division of Health Protection Technologies (ENEA) Casaccia Research Center, Italy
| | - Gaetano Pepe
- Università degli Studi della Tuscia (UNITUS), Italy
| | - Matthias Port
- Bundeswehr Institute of Radiobiology (BIR), Munich, Germany
| | - María Jesús Prieto
- Laboratorio de Dosimetría Biológica, Servicio de Oncología Radioterápica, Hospital General Universitario Gregorio Marañón (SERMAS), Spain
| | | | - Roel Quintens
- Belgian Nuclear Research Centre (SCK-CEN), Mol, Belgium
| | - Michelle Ricoul
- PROCyTOX, Commissariat à l’Energie Atomique et aux Energies Alternatives, Université Paris-Saclay (CEA), Fontenay-aux-Roses, France
| | - Laurence Roy
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Paris, France
| | - Laure Sabatier
- PROCyTOX, Commissariat à l’Energie Atomique et aux Energies Alternatives, Université Paris-Saclay (CEA), Fontenay-aux-Roses, France
| | - Natividad Sebastià
- Radiation Protection Service, IIS La Fe, Health Research Institute (LAFE), Spain
| | | | - Sylwester Sommer
- Institute of Nuclear Chemistry and Technology (INCT), Warsaw, Poland
| | - Albena Staynova
- National Center of Radiobiology and Radiation Protection (NCRRP), Bulgaria
| | - Sonja Strunz
- Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Georgia Terzoudi
- Laboratory of Health Physics, Radiobiology & Cytogenetics Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety National Center for Scientific Research “Demokritos” (NCSRD), Greece
| | - Antonella Testa
- Laboratory of Biosafety and Risk Assessment Division of Health Protection Technologies (ENEA) Casaccia Research Center, Italy
| | - Francois Trompier
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Paris, France
| | - Marco Valente
- Institut de Recherche Biomédicale des Armées (IRBA), Paris, France
| | | | - Ivan Veronese
- Università degli Studi di Milano (UNIMI), Milano, Italy
| | | | - Clemens Woda
- Helmholtz Zentrum München (HMGU), Neuherberg, Germany
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Basso E, Regazzo G, Fiore M, Palma V, Traversi G, Testa A, Degrassi F, Cozzi R. Resveratrol affects DNA damage induced by ionizing radiation in human lymphocytes in vitro. Mutat Res Genet Toxicol Environ Mutagen 2016; 806:40-6. [PMID: 27476334 DOI: 10.1016/j.mrgentox.2016.07.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/01/2016] [Accepted: 07/08/2016] [Indexed: 12/24/2022]
Abstract
Resveratrol (3,4',5-trihydroxystilbene; RSV) acts on cancer cells in several ways, inducing cell cycle delay and apoptotic death, and enhancing ionizing radiation (IR)-mediated responses. However, fewer studies have examined RSV effects on normal cells. We have treated human lymphocytes in vitro with RSV, either alone or combined with IR, to evaluate its potential use as a radioprotector. We measured the effects of RSV on induction of DNA damage, repair kinetics, and modulation of histone deacetylase activity.
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Affiliation(s)
- Emiliano Basso
- Dipartimento di Scienze, Università "Roma TRE", Roma, Italy
| | - Giulia Regazzo
- Dipartimento di Scienze, Università "Roma TRE", Roma, Italy
| | - Mario Fiore
- Istituto di Biologia Molecolare e Patologia, CNR, Roma, Italy
| | - Valentina Palma
- Sezione di Tossicologia e Scienze Biomediche, ENEA, Casaccia Roma, Italy
| | | | - Antonella Testa
- Sezione di Tossicologia e Scienze Biomediche, ENEA, Casaccia Roma, Italy
| | | | - Renata Cozzi
- Dipartimento di Scienze, Università "Roma TRE", Roma, Italy.
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Andrade M, Rodrigues C, Cardoso C, Palma V. Motherhood – a disturbed beginning: A review of a case series. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.2326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
IntroductionPerinatal mental illness is one of the most frequent complications of pregnancy and the postpartum period. During the puerperium, the risk of developing a mental disease, such as a psychotic episode, is higher than in any other time in a woman's life.ObjectivesThe two main objectives are to describe a case series of 4 patients diagnosed with pospartum psychosis, and to synthesize the most important facets of this mental illness based on a literature review.AimsThe aim is to provide an overview of the clinical and epidemiological aspects of postpartum psychosis.MethodsThe four clinical cases are presented by describing the similar as opposed to the differential aspects between all patients, using the information obtained through successive clinical interviews and the case file. Research was accomplished through Clinical Key and PubMed (2005-2015) using the keywords: postpartum psychosis.ResultsIn all four cases, the patients developed symptoms of sleep disturbance, mood fluctuation, altered thinking process with delusions or obsessions, and bizarre behaviours. This occurred within the first four weeks after labour, which was in all cases an obstrutced labour. The data suggests that postpartum psychosis is a presentation of bipolar disorder. Clinical aspects and risk factors related to this perinatal complication all coincide with the cases presented.ConclusionsPostpartum psychosis is a rare presentation of perinatal mental illness. However, it presents itself, as a psychiatric emergency, and the early and correct assessment are crucial to reset the development of the mother–child bond.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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De Rosa A, Pellegrino T, Pappatà S, Lieto M, Bonifati V, Palma V, Topa A, Santoro L, Bilo L, Cuocolo A, De Michele G. Non-motor symptoms and cardiac innervation in SYNJ1-related parkinsonism. Parkinsonism Relat Disord 2015; 23:102-5. [PMID: 26725142 DOI: 10.1016/j.parkreldis.2015.12.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 11/17/2015] [Accepted: 12/07/2015] [Indexed: 11/25/2022]
Abstract
INTRODUCTION PARK20 is a rare autosomal recessive parkinsonism related to the SYNJ1 gene and characterized by early-onset of disease and atypical signs such as supranuclear vertical gaze palsy, dementia, dystonia, and generalized tonic-clonic seizures. OBJECTIVE Non-motor features and cardiac sympathetic innervation were assessed in two siblings affected by parkinsonism who harboured the homozygous Arg258Gln mutation in the SYNJ1 gene. METHODS The Non-Motor Symptoms, the SCOPA-AUT, the Mayo Sleep Questionnaires and polysomnography were used to investigate non-motor signs (NMS), autonomic dysfunction and REM Behavioural Disorder (RBD). Cognitive functions were examined by an extensive battery of neuropsychological tests. In addition, motor and sensory nerve conduction studies and evoked laser potentials were performed. Cardiac sympathetic innervation was assessed in the two patients by (123)I-metaiodobenzylguanidine (MIBG) scintigraphy, computing early and late heart-to-mediastinum (H/M) ratios and myocardial washout rates (WR). RESULTS Among the non-motor symptoms and autonomic signs, case 1 had cold intolerance, drooling and dysphagia, while case 2 had pain and urinary dysfunction. Both cases showed mood and behavioural disorders. RBD were not found, whereas the neuropsychological assessment revealed a progressive cognitive impairment. Neurophysiological studies revealed no abnormalities. Indexes of cardiac sympathetic innervation in the two patients did not differ from those of control subjects. CONCLUSIONS Our findings expand the phenotypic profile of SYNJ1-related parkinsonism. Preserved cardiac sympathetic function and absence of RBD suggest that PARK20 should be explained by a pathogenic mechanism different from Lewy Body pathology, or that the latter is not as widespread as idiopathic Parkinson's disease.
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Affiliation(s)
- A De Rosa
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy.
| | - T Pellegrino
- Institute of Biostructure and Bioimaging, National Council of Research, Naples, Italy
| | - S Pappatà
- Institute of Biostructure and Bioimaging, National Council of Research, Naples, Italy
| | - M Lieto
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - V Bonifati
- Department of Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands
| | - V Palma
- Department of Neurophysiology, San Gennaro Hospital, Naples, Italy
| | - A Topa
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - L Santoro
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - L Bilo
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - A Cuocolo
- Department of Advanced Biomedical Sciences, Federico II University, Naples, Italy
| | - G De Michele
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy; Institute of Biostructure and Bioimaging, National Council of Research, Naples, Italy
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de Caprariis B, De Filippis P, Scarsella M, Petrullo A, Palma V. Biomass Gasification and Tar Reforming in a Two-stage Reactor. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.egypro.2014.11.1025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
Regulation of cell renewal in the periodontium is a critical cell function that has not been clarified. Sonic hedgehog (Shh) is a secreted signaling molecule that plays a key role during development and adult tissue homeostasis. In the present study, we have analyzed the role played by Shh in human periodontal ligament stem cell (HPLSC) proliferation. HPLSC were isolated with anti-STRO-1 antibodies. Shh increased the expression of GLI1 and PTC-1 and selectively stimulated cell proliferation in STRO-1(+) derived from adult periodontal ligament. Shh components were localized to primary cilia in STRO-1(+) cells after Shh stimulation. STRO-1(+) also expressed Shh, suggesting an autocrine-regulated phenomenon. Thus, we propose that Shh plays a critical role in the regulation of cell proliferation in STRO-1(+)/HPLSC.
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Affiliation(s)
- C Martínez
- Facultad de Ciencias, Universidad de Chile, Center for Genomics of the Cell, Las Palmeras 3425, Santiago, Chile
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Ciambelli P, Sannino D, Palma V, Vaiano V, Mazzei RS. Intensification of gas-phase photoxidative dehydrogenation of ethanol to acetaldehyde by using phosphors as light carriers. Photochem Photobiol Sci 2011; 10:414-8. [DOI: 10.1039/c0pp00186d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ciambelli P, Sannino D, Palma V, Vaiano V, Mazzei RS. A step forwards in ethanol selective photo-oxidation. Photochem Photobiol Sci 2009; 8:699-704. [DOI: 10.1039/b818053a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Cabrita MJ, Torres M, Palma V, Alves E, Patão R, Costa Freitas AM. Impact of malolactic fermentation on low molecular weight phenolic compounds. Talanta 2007; 74:1281-6. [PMID: 18371781 DOI: 10.1016/j.talanta.2007.08.045] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2007] [Revised: 08/23/2007] [Accepted: 08/30/2007] [Indexed: 10/22/2022]
Abstract
A reversed phase liquid chromatography-DAD method is proposed for analysis of major non-flavonoid phenolic compounds in wines. The method employed a mixture of acetic acid, water and methanol as eluents and was used to evaluate the impact of malolactic fermentation in low molecular phenolic compounds. The wines analyzed underwent different treatments, like the addition of a pectolytic enzyme or lysozyme, and the way malolactic fermentation was carried out-spontaneously or with the inoculation of two different commercial lactic bacteria. The main result observed was the disappearance of hydroxycinnamoyltartaric acids and the increase of resultant free forms, regardless the way malolactic fermentation was carried out.
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Affiliation(s)
- M J Cabrita
- Laboratório de Enologia, Instituto de Ciências Agrárias Mediterrânicas, Universidade de Evora, Ap 94 7002-554 Evora, Portugal
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Ciambelli P, Matarazzo G, Palma V, Russo P, Borla EM, Pidria MF. Reduction of soot pollution from automotive diesel engine by ceramic foam catalytic filter. Top Catal 2007. [DOI: 10.1007/s11244-007-0193-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Palma V, Brescia Morra V, Polverino M, Santoro L, Caruso G. AN OPEN STUDY OF RILUZOLE VERSUS RILUZOLE PLUS GABAPENTIN IN AMYOTROPHIC LATERAL SCLEROSIS. J Peripher Nerv Syst 2001. [DOI: 10.1046/j.1529-8027.2000.00513-45.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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]
Affiliation(s)
- V Palma
- Dept. of Neurology, Federico II University, Service of Neurophysiopathology, Nuovo Pellegrini Hospital, Naples, and Service of Respiratory Physiopathology, Cava dei Tirreni Hospital, Italy
| | - V Brescia Morra
- Dept. of Neurology, Federico II University, Service of Neurophysiopathology, Nuovo Pellegrini Hospital, Naples, and Service of Respiratory Physiopathology, Cava dei Tirreni Hospital, Italy
| | - M Polverino
- Dept. of Neurology, Federico II University, Service of Neurophysiopathology, Nuovo Pellegrini Hospital, Naples, and Service of Respiratory Physiopathology, Cava dei Tirreni Hospital, Italy
| | - L Santoro
- Dept. of Neurology, Federico II University, Service of Neurophysiopathology, Nuovo Pellegrini Hospital, Naples, and Service of Respiratory Physiopathology, Cava dei Tirreni Hospital, Italy
| | - G. Caruso
- Dept. of Neurology, Federico II University, Service of Neurophysiopathology, Nuovo Pellegrini Hospital, Naples, and Service of Respiratory Physiopathology, Cava dei Tirreni Hospital, Italy
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Dahmane N, Sánchez P, Gitton Y, Palma V, Sun T, Beyna M, Weiner H, Ruiz i Altaba A. The Sonic Hedgehog-Gli pathway regulates dorsal brain growth and tumorigenesis. Development 2001; 128:5201-12. [PMID: 11748155 DOI: 10.1242/dev.128.24.5201] [Citation(s) in RCA: 310] [Impact Index Per Article: 13.5] [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: 11/20/2022]
Abstract
The mechanisms that regulate the growth of the brain remain unclear. We show that Sonic hedgehog (Shh) is expressed in a layer-specific manner in the perinatal mouse neocortex and tectum, whereas the Gli genes, which are targets and mediators of SHH signaling, are expressed in proliferative zones. In vitro and in vivo assays show that SHH is a mitogen for neocortical and tectal precursors and that it modulates cell proliferation in the dorsal brain. Together with its role in the cerebellum, our findings indicate that SHH signaling unexpectedly controls the development of the three major dorsal brain structures. We also show that a variety of primary human brain tumors and tumor lines consistently express the GLI genes and that cyclopamine, a SHH signaling inhibitor, inhibits the proliferation of tumor cells. Using the in vivo tadpole assay system, we further show that misexpression of GLI1 induces CNS hyperproliferation that depends on the activation of endogenous Gli1 function. SHH-GLI signaling thus modulates normal dorsal brain growth by controlling precursor proliferation, an evolutionarily important and plastic process that is deregulated in brain tumors.
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Affiliation(s)
- N Dahmane
- Skirball Institute of Biomolecular Medicine, Developmental Genetics Program and Department of Cell Biology, NYU School of Medicine, 540 First Avenue, New York, NY 10016, USA
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Abstract
Calcium signals participate in the differentiation of electrically excitable and nonexcitable cells; one example of this differentiation is the acquisition of mature neuronal phenotypes. For example, transient elevations of the intracellular calcium concentration have been recorded in the ectoderm of early embryos, and this elevation has been proposed to participate in neural induction. Here, we present molecular evidence indicating that voltage-sensitive calcium channels (VSCC) are involved in early developmental processes leading to the establishment of the dorsoventral (D-V) patterning of a vertebrate embryo. We report that alpha1S VSCC are expressed selectively in the dorsal marginal zone at the early gastrula stage. The expression of the VSCC correlates with elevated intracellular calcium levels, as evaluated by the fluorescence of the intracellular calcium indicator Fluo-3. Misexpression of VSCC leads to a strong dorsalization of the ventral marginal zone and induction of the secondary axis but no direct neuralization of the ectoderm. Moreover, specific inhibition of VSCC by the use of calcicludine results in ventralization of the dorsal mesoderm. Together, these results indicate that calcium channels regulate mesodermal patterning by specificating the D-V identity of the mesodermal cells. The D-V patterning of the mesoderm has been shown to depend on a gradient of BMPs activity. We discuss the possibility that VSCC affect or act downstream of BMPs activity.
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Affiliation(s)
- V Palma
- Facultad de Ciencias, Universidad de Chile and Millennium Nucleus in Developmental Biology, Las Palmeras 3425, Santiago, Chile
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Ciambelli P, Palma V, Russo P, Vaccaro S. Development of a Catalytic Trap for Soot Particulate. CHEM-ING-TECH 2001. [DOI: 10.1002/1522-2640(200106)73:6<603::aid-cite6031111>3.0.co;2-b] [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: 11/06/2022]
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Burgess J, Fawcett J, Palma V, Gilani SR. Fluoro derivatives of bis(salicylideneaminato-N,O)copper(II) and -oxovanadium(IV). Acta Crystallogr C 2001; 57:277-80. [PMID: 11250577 DOI: 10.1107/s0108270100020059] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2000] [Accepted: 12/11/2000] [Indexed: 11/10/2022] Open
Abstract
The structures of five complexes of fluorine-containing bidentate salicylideneamine Schiff base ligands are reported. These are the bis-ligand copper(II) complexes of the Schiff bases derived from salicylaldehyde and 4-fluoro-, [Cu(C(13)H(9)FNO)(2)], 3-fluoro-4-methyl-, [Cu(C(14)H(11)FNO)(2)], 3,5-bis(trifluoromethyl)-, [Cu(C(15)H(8)F(6)NO)(2)], and 4-trifluoromethoxyanilines, [Cu(C(14)H(9)F(3)NO(2))(2)], and the bis-ligand oxovanadium(IV) complex of the Schiff base derived from salicylaldehyde and 4-trifluoromethoxyaniline, [VO(C(14)H(9)F(3)NO(2))(2)]. Three of the copper complexes have square-planar coordination at the metal, imposed by the virtue of symmetry, but the immediate coordination environment of the copper in the 3,5-bis(trifluoromethyl) complex is intermediate between square planar and tetrahedral. The coordination environment at the metal of the vanadium complex can be described as distorted square pyramidal.
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Affiliation(s)
- J Burgess
- Department of Chemistry, University of Leicester, Leicester LE1 7RH, England
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Rojas CV, Neely A, Velasco-Loyden G, Palma V, Kukuljan M. Hyperkalemic periodic paralysis M1592V mutation modifies activation in human skeletal muscle Na+ channel. Am J Physiol 1999; 276:C259-66. [PMID: 9886942 DOI: 10.1152/ajpcell.1999.276.1.c259] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mutations in the human skeletal muscle Na+ channel underlie the autosomal dominant disease hyperkalemic periodic paralysis (HPP). Muscle fibers from affected individuals exhibit sustained Na+ currents thought to depolarize the sarcolemma and thus inactivate normal Na+ channels. We expressed human wild-type or M1592V mutant alpha-subunits with the beta1-subunit in Xenopus laevis oocytes and recorded Na+ currents using two-electrode and cut-open oocyte voltage-clamp techniques. The most prominent functional difference between M1592V mutant and wild-type channels is a 5- to 10-mV shift in the hyperpolarized direction of the steady-state activation curve. The shift in the activation curve for the mutant results in a larger overlap with the inactivation curve than that observed for wild-type channels. Accordingly, the current through M1592V channels displays a larger noninactivating component than does that through wild-type channels at membrane potentials near -40 mV. The functional properties of the M1592V mutant resemble those of the previously characterized HPP T704M mutant. Both clinically similar phenotypes arise from mutations located at a distance from the putative voltage sensor of the channel.
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Affiliation(s)
- C V Rojas
- Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Casilla 138-11, Santiago, Chile
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Abstract
We investigated the possible involvement of the brainstem in the pathology of obsessive-compulsive disorder. Brainstem auditory evoked potentials (BAEPs) were collected from a population of neurotics (100 patients), including a group of 50 subjects suffering from obsessive-compulsive disorder (OCD) and the rest having generalized anxiety disorder. Twenty-five, age- and sex-matched, healthy volunteers served as controls. BAEPs were recorded by standard techniques as recommended by the AEEGS Clinical Evoked Potentials Guidelines. A one-way analysis of variance and the Fisher least-significant difference test were used for statistical analysis of the data. After stimulation of the right ear, a significant increase of wave I-V interpeak latency was found in the two groups of patients as compared with that of controls. Moreover OCD patients had a significantly reduced amplitude of wave III when compared to that of the control group. Our electrophysiological data suggest a possible involvement of brainstem in OCD pathogenesis. We discuss our findings in relation to biochemical, anatomical and physiological alterations described in the literature for serotonin-dependent systems.
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Affiliation(s)
- G Nolfe
- Department of Neurodynamics, National Research Council (CNR), Arco Felice (NA), Italy.
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Ciambelli P, Palma V, Russo P, Vaccaro S. Catalytic ceramic filter for Diesel soot removal: preliminary investigations. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0167-2991(98)80919-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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Abstract
In this article we describe the in-vitro interaction between human spermatozoa and oviductal epithelial cell monolayers. Freshly obtained spermatozoa were added to culture dishes containing human oviductal cells (co-culture), culture medium (control) or culture medium which had previously been used for culture of oviductal cells (conditioned medium). At 0, 5, 24, and 48 h of incubation the percentage of motile spermatozoa was determined and their motion characteristics analysed. Aliquots were taken to determine the percentage of acrosome-reacted spermatozoa. The spermatozoa were motile for a longer period in the presence of oviductal cells (54 +/- 9% co-culture versus 18 +/- 3% control, at 48 h) and the kinetics of the acrosome reaction exhibited a different pattern. In the control the percentage of reacted spermatozoa increased progressively throughout incubation. In co-culture, there was an increase only at 5 h; thereafter, the percentage of acrosome reactions did not change. Spermatozoa incubated in conditioned medium exhibited a behaviour halfway between the control and the co-culture. The pattern of sperm movement was not different in any of the experimental conditions. Although there was no binding between spermatozoa and oviductal epithelial cells, the frequency of the ciliary beat increased after spermatozoa were added to the oviductal cell monolayers. These results suggest that incubation with oviductal cells increases sperm survival, stabilizes the acrosome, and modifies the frequency of ciliary beat.
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Affiliation(s)
- P Morales
- Unit of Reproduction and Development, Faculty of Biological Sciences, Pontificia Universidad Catolica de Chile, PO Box 114-D, Santiago, Chile
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Ciambelli P, D'amore M, Palma V, Vaccaro S. Catalytic combustion of carbon particulate at high values of the carbon/catalyst mass ratio. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/s0082-0784(96)80405-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Serra FP, Palma V, Nolfe G, Buscaino GA. An electrophysiological study in obsessional compulsive disorders. Acta Neurol (Napoli) 1994; 16:240-248. [PMID: 7709794] [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: 05/21/2023]
Abstract
Recent anatomoclinical and neuroimaging studies have suggested a possible relation between obsessional compulsive disorders (OCD) and some brain damage, such as frontolenticular lesions, basal ganglia cavitations and local glucose metabolism impairment. A poor frontocaudal regulation of the left hemisphere and an autonomic nervous system dysfunction in OCD patients have been supposed. To absess these morphofunctional abnormalities, an electrophysiological approach has been performed in 100 consecutive neurotic patients, screened with various neuropsychological tests and divided in two groups, 50 with OCD and 50 with anxious neurosis (ANX). Patients were submitted to EEG spectral analysis and BAEP studies and comparated with 25 age-matched normal controls. The mean alpha power in occipital regions was significantly higher in OCD patients and reduced in ANX patients. A significant reduction of the beta activity was recorded in frontal regions in both patient groups as compared to controls. A slight (p < 0.11) increase in I-V interpeak latency (IPL) vs. control group was observed in BAEP from left ear. A significant increase of the same IPL in OCD vs. controls (p < 0.025) was observed in BAEP from right ear. A slight n.s. reduction in III wave amplitude in OCD patients was observed in BAEP from left ear, whereas a highly significant reduction in the same wave amplitude from BAEP from right ear was observed in OCD patients. The above findings cold be account for both a frontotemporal and brainstem dysfunction with a probable involvement of serotoninergic central pathways, with a significant impairment of pontine segment in ANX patients and of mesencephalic region in OCD patients.
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Affiliation(s)
- F P Serra
- Clinica Neurologica Università Federico II-Napoli, 1st. Cibernetica Del Cnr, ARCO Felice, Napoli
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Palma V, Andreone V, Ciarmiello A, Cianciulli E, Ramacciato F, Lalla M, Nolfe G. S.P.E.C.T., E.E.G. and M.R.I. investigations in complex partial epilepsy. Acta Neurol (Napoli) 1994; 16:255-61. [PMID: 7709796] [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: 01/26/2023]
Abstract
We present SPECT, electroencephalography (EEG) and magnetic resonance imaging (MRI) data of a homogeneous group of 12 young adults with rare focal seizures and a good response to carbamazepine. Our data suggest that the alterations of the rCBF are independent of severity and duration of the epilepsy and of the frequency of seizures. Based on our experimental data, it may be suggested that complex partial epilepsy is a good biological model to investigate the neurogenic control of cerebral flow and metabolism.
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Affiliation(s)
- V Palma
- Department of Clinical Neurophysiology, Nuovo Pellegrini Hospital, Naples, Italy
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35
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Abstract
Changes in median nerve somatosensory evoked potential (SEP) in diabetic patients have amply been reported. However the relationships between the diabetic polyneuropathy and the abnormalities of SEPs are still a matter of discussion. To elucidate these relationships, we have studied SEPs in 38 non-insulin-dependent diabetics with mild or severe degree of peripheral neuropathy. Our principal findings are as follows. (i) The wrist-Erb point (EP) conduction velocity (WECV) and the EP-N13 interpeak latency are significantly altered in diabetics. The N11-N13, N13-N20 and N13-P22, interpeak latencies are within the normal range. (ii) The WECV is more reduced in patients with severe neuropathy than in those with mild neuropathy, whereas the degrees of neuropathy have no influence on the alterations of EP-N13 interpeak latency. (iii) No significant correlation is found between the WECV and the EP-N13 interpeak latency. (iv) The WE conduction velocity was significantly correlated with both motor and sensory peripheral nerve conduction velocities. On the contrary, no correlation is found between these latter peripheral parameters and the EP-N13 interpeak latency. These findings indicate that the alteration in the tract from brachial plexus to the posterior column could not be a parallel process of distal neuropathy of non-insulin-dependent diabetic patients.
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Affiliation(s)
- V Palma
- Division of Neurophysiopathology, San Gennaro and Nuovo Pellegrini Hospital, Naples, Italy
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36
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Guadagnino M, Palma V, Tessitore A. Correlation between neuroradiological and electrophysiological investigations in multiple sclerosis with features of a cerebral tumour. Acta Neurol (Napoli) 1994; 16:19-28. [PMID: 8073912] [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: 01/28/2023]
Abstract
Multiple sclerosis presenting at onset with clinical signs and CT picture suggesting a cerebral neoplasm or a slowly evolving stroke, is uncommon. We report one patient in whom cerebral tumour was suspected not only clinically but also from CT features. M.R.I., demonstrating multifocal, high intensity, unsuspected periventricular and white-matter lesions, permitted to diagnose what seemed an intracranial left parietal neoplasm as an acute plaque of demyelination. In fact, in the follow-up, this large low-intensity left parietal area acquired structural and volumetrical homogeneity compared to all other present hyperintense lesions. Instead multimodal EPs, though disclosing subclinical dysfunction in the early stage of the disease, did not correlate with changes in neurological examination to follow-up. So they, unlike the M.R.I., seem of no particular usefulness to serially monitor the clinical modification of MS.
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Affiliation(s)
- M Guadagnino
- Servizio di Neurologia e Neuroriabilitazione, Ospedale C.T.O., U.S.L. 42, Napoli
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37
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Palma V, Sinisi L, Andreone V, Fazio N, Serra LL, Ambrosio G, De Michele G. Hindbrain hernia headache and syncope in type I Arnold-Chiari malformation. Acta Neurol (Napoli) 1993; 15:457-61. [PMID: 8160558] [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: 01/29/2023]
Abstract
We describe two young women affected with syncopal episodes and occipital headache exacerbated by cough, sneezing, rising, or effort. MRI revealed in both patients type I Arnold-Chiari malformation. A craniospinal pressure dissociation with brainstem compression may be involved in the pathogenesis of headache and syncope.
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Affiliation(s)
- V Palma
- Servizio di Neurofisiopatologia, Ospedale Nuovo Pellegrini, Napoli
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38
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Palma V, Tudón H, Buentello L, Nava S, Ostrosky P, Salamanca F. Methods for the analysis of cellular kinetics in PHA-stimulated blood lymphocytes using BrdU incorporation. A comparative study. Mutat Res 1993; 286:267-73. [PMID: 7681538 DOI: 10.1016/0027-5107(93)90191-h] [Citation(s) in RCA: 8] [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: 01/26/2023]
Abstract
The cellular cycle (cc) span was measured by using differential sister-chromatid staining (DSCS) and applying the following methods: cellular cycle time (cct) according to the graphic method of Dutrillaux and Fosse (G-cct); the analytical equation (A-cct) proposed in the present paper, and the average generation time (AGT) suggested by Ivett and Tice. The mean values obtained by the three methods were 12.5, 12.7, and 19.5 h, respectively. A-cct is the more precise method, since the equation of the analytical procedure allows the utilization of numerical data, and when the graphical method is used, the values plotted in a graph may vary according to the employed scale. Cct is the choice over AGT because the first evaluates actively dividing cells and only considers those at M2 or M3. It will be useful to study cell proliferation kinetics in genetic pathological conditions and to investigate with accuracy the effect of cytostatic and cytotoxic drugs.
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Affiliation(s)
- V Palma
- Unit of Investigation in Human Genetics, National Medical Center, I.M.S.S., Mexico D.F
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39
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Palma V, Guadagnino M, Brescia Morra V, Nolfe G. Multimodality evoked potentials in sporadic amyotrophic lateral sclerosis: a statistical approach. Electromyogr Clin Neurophysiol 1993; 33:167-71. [PMID: 8495658] [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: 01/31/2023]
Abstract
The involvement of sensory pathways in patients suffering from amyotrophic lateral sclerosis (ALS) is well reported in histopathological studies. Several laboratories have also used evoked potentials to evidentiate subtle dysfunctions of sensory systems in such patients. However, conflicting results have been presented in studies using evoked potentials. In the present experiment we have evaluated multimodality evoked potentials in subjects with sure diagnosis of sporadic ALS, by means of the Bonferroni multiple comparisons procedure. Our principal findings are: a) no statistical difference between patients and controls in BAEP and VEP recordings; b) a reduction of N13 amplitude and a prolonged P22 latency in SEP recordings. Due to the sources of N13 and P22, these latter alterations, however, do not implicate the involvement of somatosensory pathway. In conclusion, the current investigation does not provide an electrophysiological support for the involvement of sensory systems in the sporadic ALS.
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Affiliation(s)
- V Palma
- Division of Neurophysiopathology, San Gennaro Hospital, Naples, Italy
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40
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Sinisi L, Palma V, Mansi D. Antiphospholipid antibodies in young adults with cerebrovascular ischemic disease. Acta Neurol (Napoli) 1992; 14:381-6. [PMID: 1293981] [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: 12/26/2022]
Abstract
In this survey we reviewed some of the most recent laboratory and clinical studies on cerebral ischemia in young patients with antiphospholipid antibodies (aPLs). A strong association between aPLs and cerebrovascular ischemic disease has been documented, but the underlying pathogenetic mechanism remains unclear. Furthermore, long-term prognosis is not clear since too few controlled longitudinal studies had been reported. Further prospective clinical trials are needed to define risk factors, to identify different subgroups of patients, and to lead to an effective therapy.
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Affiliation(s)
- L Sinisi
- Servizio di Neurofisiopatologia, Ospedale San Gennaro, USL 42, Napoli
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41
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Palma V, Guadagnino M. Evoked potentials in brain death. A critical review. Acta Neurol (Napoli) 1992; 14:363-8. [PMID: 1293979] [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: 12/26/2022]
Abstract
The development of transplant surgery has determined the necessity to revise criteria and to apply new electrophysiologic techniques to add further informations when survival of brain function is in question. The EPs, which provide a sensitive tool for assessment of integrity of main sensorial systems, could have a place in the electrophysiologic evaluation of the brain death. This review deals with the role of EPs in brain death and points out the main patterns found in that clinical condition.
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Affiliation(s)
- V Palma
- Servizio di Neurofisiopatologia, Ospedali Nuovo Pellegrini e San Gennaro, U.S.L. 42, Napoli
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42
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Sinisi L, Palma V, Di Girolamo C, Scarpa R, Faccenda F, Rubba P, Cirillo S, Mansi D. Sneddon's syndrome, anticardiolipin antibodies and anticardiolipin cofactor. A case report. Acta Neurol (Napoli) 1992; 14:134-9. [PMID: 1414558] [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: 12/26/2022]
Abstract
Sneddon's syndrome is a rare entity characterized by idiopathic livedo reticularis and cerebrovascular lesions. A case of a young woman with livedo reticularis and progressive cerebral arteriopathy is described. Abnormalities of sexual and gonadotropic hormones were present. Anticardiolipin and anticardiolipin-cofactor complex antibodies were not found.
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Affiliation(s)
- L Sinisi
- Department of Neurology, Second School of Medicine, University of Naples, Italy
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Abstract
We evaluated the role of dopamine systems in the propagation of epileptic Focal, limbic seizures were produced by systemically administered pilocarpine (200 mg/kg, i.p.); as previously described this dose produces limbic stereotypes but neither convulsions nor seizure-related brain damage. The systemic pretreatment with D-1, but not D-2, agonists induced convulsions identical to those produced by a higher, convulsant dose of pilocarpine (400 mg/kg). Conversely, the pretreatment with D-1 receptor antagonists prevented the convulsions whereas the D-2 antagonists facilitated the pilocarpine-induced seizures. Furthermore, we studied the effects of intracerebral injections of dopamine agents on seizures induced by pilocarpine. Nigral microinjection of D-1 agonists strongly induced motor seizures in rats treated with the low dose of pilocarpine. On the other hand, microinjection of D-1 antagonists prevented the motor seizures induced by the high dose of pilocarpine. This study indicates that the two dopamine receptor subtypes, D-1 and D-2, exert opposing roles in the control of epilepsy propagation. Substantia nigra pars reticulata appears to be primarily involved in the dopamine-mediated modulation of seizures.
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Affiliation(s)
- P Barone
- Department of Neurology, 2nd School of Medicine, Napoli, Italy
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Palma V, Ambrosio G, Scarano E, Siano G, Sinisi L, Serra LL, Grasso A, Mansi D. Spinal cord injury: some epidemiological data. A review of 233 cases. Acta Neurol (Napoli) 1992; 14:29-38. [PMID: 1580202] [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: 12/27/2022]
Abstract
Two hundred thirty-three consecutive cases of traumatic para- and tetraplegia admitted to a department of Neurosurgery in Naples within ten years were reviewed and categorized according to etiology, level of lesion and clinical features. The age of the patients at the time of injury varied from 7 to 74 years with a mean age of 37.1 +/- 17.1 (male mean age = 35.8 +/- 16.7; female mean age = 41.5 +/- 18.2). The male/female sex ratio was 4.8. Of these patients 66 were paraplegic and 167 were tetraplegic. The analysis of the various causes of the spinal cord injury showed that the occupational activities take the first place (32.2%); injuries in recreational activities and road accidents accounted for the majority of the remaining cases.
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Affiliation(s)
- V Palma
- Department of Neurology, 2nd School of Medicine, University of Naples
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Marolda M, Palma V, Camporeale FS, Carandente M, Cioffi M, Orsini AVM, Gentile A. Steroid myopathy: Clinical and immunohistochemical study of a case. ACTA ACUST UNITED AC 1991. [DOI: 10.1007/bf02335781] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Nolfe G, Palma V, Guadagnino M, Serra LL, Serra C. Evoked potentials in shoe-workers with minimal polyneuropathy. Electromyogr Clin Neurophysiol 1991; 31:157-62. [PMID: 1646703] [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: 12/28/2022]
Abstract
The aim of the present research was to investigate early impairments of central nervous system in subjects exposed to a low toxic level of industrial solvents for several years. Therefore a group of fifteen shoe-workers, with symptoms of minimal polyneuropathy, and a group of twenty, sex and age matched, healthy volunteers were selected for multimodal evoked potentials studies. The statistical analysis revealed a decrease of VEP and SEP amplitudes as well as a significant higher percentage of cases with BAEP V/I ratio between 0.5 and 1 among patients. The wrist-Erb's point conduction velocity was, also, found lowered in them. In accordance with the experimental results, the systematic employment of multimodal evoked potentials is proposed for screening the subjects exposed to neurotoxic influence of industrial solvents.
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Affiliation(s)
- G Nolfe
- Università degli Studi di Milano, Milan, Italy
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Barone P, Palma V, DeBartolomeis A, Tedeschi E, Muscettola G, Campanella G. Dopamine D1 and D2 receptors mediate opposite functions in seizures induced by lithium-pilocarpine. Eur J Pharmacol 1991; 195:157-62. [PMID: 1829682 DOI: 10.1016/0014-2999(91)90394-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.4] [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: 12/29/2022]
Abstract
The effect of selective dopamine receptor blockade on epileptic activity was tested in rats, using the lithium-pilocarpine seizure model. One day after lithium pretreatment, systemic administration of the dopamine D1 antagonist, SCH 23390, prevented the convulsive activity induced by either 10 or 15 mg/kg of pilocarpine in a dose-dependent manner as revealed by behavioral and electroencephalographic alterations. No anticonvulsant effect was observed when SCH 23390 was injected at the same time as lithium and 24 h prior to pilocarpine. Furthermore, the D2 antagonists, raclopride and haloperidol, potently reduced the threshold for convulsions induced by 10 mg/kg of pilocarpine, following lithium pretreatment. Neither dopamine D1 nor D2 antagonists altered the limbic stereotypies induced by pilocarpine, supporting the view that the dopamine system is primarily involved in the mechanisms of convulsion generation and seizure spreading. These results indicate that dopamine receptor subtypes exert opposite functions on the regulation of convulsive activity.
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Affiliation(s)
- P Barone
- Department of Neurology, 2nd School of Medicine, Napoli, Italy
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Palma V, Guadagnino M. Electrophysiological monitoring of neural functions during neurosurgery. Acta Neurol (Napoli) 1990; 12:481-504. [PMID: 2080723] [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: 12/30/2022]
Abstract
The intraoperative evoked potential monitoring has become indispensable in patients at risk for neurologic damages during surgery. This review presents the principal clinical indications for intraoperative monitoring of sensory and motor functions of spinal cord as well as of the auditory, facial and optic nerves and of brain functions during cerebrovascular surgery.
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Affiliation(s)
- V Palma
- Servizio di Neurofisiopatologia, Ospedali S. Gennaro, USL N. 42, Regione Campania
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49
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Guadagnino M, Palma V. Clinical applications of evoked potentials in neurological disorders. Acta Neurol (Napoli) 1990; 12:440-79. [PMID: 2080722] [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: 12/30/2022]
Abstract
The functional integrity of the main sensorial systems and of the central motor pathways can be evaluated through multimodal evoked potentials and non-invasive transcranial stimulation of the motor cortex. In this review the authors summarize the main clinical indications of the afore said methods specifically in the field of the neurological disorders.
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Affiliation(s)
- M Guadagnino
- Servizio di Neurologia, Unità Sanitaria Locale N. 42, Regione Campania
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50
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Abstract
The contribution of dopaminergic mechanisms to the generalization of epileptic activity was studied in rats given pilocarpine after pretreatment with selective dopamine agonists. At the dose of 200 mg/kg, pilocarpine produced limbic stereotypes but not convulsions or seizure-related brain damage. Pilocarpine, 200 mg/kg, following pretreatment with the D1 agonist (RS)-2,3,4,5-tetrahydro-7,8-dihydroxy-1-phenyl-1H-3 benzazepine, but not its (S)-enantiomer, induced convulsive activity as revealed by behavioral, electroencephalographic alterations and widespread brain damage. These features were identical to those produced by a higher, convulsant dose of pilocarpine (400 mg/kg). On the other hand, pretreatment with the D2 agonist 4,4a,5,6,7,8,8a,9-octahydro-5-n-propyl-2H-pyrazolo-3,4-g-quinoline failed to induce convulsions. Furthermore, the D1 receptor antagonist (R)-(+)-8-chloro-2,3,4,5-n-tetrahydro-3-methyl-5-phenyl-1H-3-benzazepine -7-ol prevented the convulsive activity induced by both 2,3,4,5-tetrahydro-7,8-dihydroxy-1-phenyl-1H-3 benzazepine plus pilocarpine (200 mg/kg) and pilocarpine (400 mg/kg), given alone. However, neither dopamine agonists nor antagonists altered the limbic stereotypes induced by pilocarpine, suggesting a dopamine system involvement primarily in the mechanisms of epilepsy generalization. The results suggest that pharmacological manipulation of dopaminergic transmission may provide an alternative approach to therapy of secondarily generalized epilepsy.
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MESH Headings
- 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine/pharmacology
- Animals
- Dose-Response Relationship, Drug
- Ergolines/pharmacology
- Male
- Pilocarpine
- Quinpirole
- Rats
- Rats, Inbred Strains
- Receptors, Dopamine/drug effects
- Receptors, Dopamine/metabolism
- Receptors, Dopamine/physiology
- Receptors, Dopamine D1
- Seizures/chemically induced
- Seizures/metabolism
- Seizures/physiopathology
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Affiliation(s)
- P Barone
- Experimental Therapeutics Branch, National Institute of Neurological and Communicative Disorders and Stroke, Bethesda, MD 20892
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