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1. Tracking the Spread of the BA.2.86 Lineage in Italy Through Wastewater Analysis

Author

Veneri, C, Brandtner, D, Mancini, P, Bonanno Ferraro, G, Iaconelli, M, Suffredini, E, Petrillo, M, Leoni, G, Paracchini, V, Gawlik, B, Marchini, A, Torlontano, P, Aprea, G, Scattolini, S, Acciari, V, La Bianca, M, Cifarelli, R, Palma, A, Lauria, G, La Vecchia, G, Giordano, V, Cossentino, L, Pennino, F, Lombardi, A, Gentili, L, Angelini, P, Nasci, D, Alborali, G, Formenti, N, Guarneri, F, Fontani, N, Guercio, M, Mariuz, M, Trani, G, Pariani, A, De Lellis, L, Ancona, C, Barca, A, Serio, F, Giorgi, D, Ferrante, I, Capparuccini, V, Scicluna, M, Cersini, A, Pietrella, G, Nicosia, E, Grasselli, E, Izzotti, A, Tomesani, I, Bellisomi, M, Rosatto, S, Ammoni, E, Cereda, D, Bertasi, B, Losio, M, Oliva, D, Castiglioni, S, Schiarea, S, Binda, S, Primache, V, Pellegrinelli, L, Cocuzza, C, Musumeci, R, Bolognini, L, Filippetti, F, Paniccia', M, Briscolini, S, Magi, S, Grucci, A, Colitti, M, Ciccaglione, A, Montanaro, C, Griglio, B, Costa, A, Decastelli, L, Romano, A, Bianchi, M, Carraro, E, Pignata, C, Macrì, M, Bonetta, S, Albano, N, Di Vittorio, G, Mongelli, O, Apollonio, F, Triggiano, F, De Giglio, O, Montagna, M, Palermo, M, Maida, C, Mazzucco, W, Tramuto, F, De Grazia, S, Giammanco, G, Filizzolo, C, Purpari, G, Gucciardi, F, Ferrante, M, Agodi, A, Barchitta, M, Cala', P, Carducci, A, Verani, M, Federigi, I, Macrì, S, Federici, E, Petricciuolo, M, Carnevali, A, Russo, F, Pitter, G, Groppi, V, Rigoli, F, Zampini, M, Baldovin, T, Amoruso, I, Cadonna, M, Postinghel, M, Foladori, P, Zago, L, Stenico, A, Marco, M, Matteo, D, La Rosa, G, Veneri, C., Brandtner, D., Mancini, P., Bonanno Ferraro, G., Iaconelli, M., Suffredini, E., Petrillo, M., Leoni, G., Paracchini, V., Gawlik, B. M., Marchini, A., Torlontano, Paolo, Aprea, Giuseppe, Scattolini, Silvia, Acciari, Vicdalia Aniela, La Bianca, Michele, Cifarelli, Rosa Anna, Palma, Achille, Lauria, Giuseppe, La Vecchia, Giovanna, Giordano, Vincenzo, Cossentino, Luigi, Pennino, Francesca, Lombardi, Annalisa, Gentili, Lisa, Angelini, Paola, Nasci, Daniele, Alborali, Giovanni, Formenti, Nicoletta, Guarneri, Flavia, Fontani, Nadia, Guercio, Marco, Mariuz, Marika, Trani, Gabriella, Pariani, Anna, De Lellis, Laura, Ancona, Carla, Barca, Alessandra, Serio, Flavia, Giorgi, Doriana Antonella, Ferrante, Irene, Capparuccini, Valeria, Scicluna, Maria Teresa, Cersini, Antonella, Pietrella, Gabriele, Nicosia, Elena, Grasselli, Elena, Izzotti, Alberto, Tomesani, Irene, Bellisomi, Marta, Rosatto, Stefano, Ammoni, Emanuela, Cereda, Danilo, Bertasi, Barbara, Losio, Marina Nadia, Oliva, Desdemona, Castiglioni, Sara, Schiarea, Silvia, Binda, Sandro, Primache, Valeria, Pellegrinelli, Laura, Cocuzza, Clementina, Musumeci, Rosario, Bolognini, Luigi, Filippetti, Fabio, Paniccia', Marta, Briscolini, Sara, Magi, Silvia, Grucci, Annalisa, Colitti, Michele, Ciccaglione, Angela, Montanaro, Carmen, Griglio, Bartolomeo, Costa, Angela, Decastelli, Lucia, Romano, Angelo, Bianchi, Manila, Carraro, Elisabetta, Pignata, Cristina, Macrì, Manuela, Bonetta, Silvia, Albano, Nehludoff, Di Vittorio, Giuseppe, Mongelli, Onofrio, Apollonio, Francesca, Triggiano, Francesco, De Giglio, Osvalda, Montagna, Maria Teresa, Palermo, Mario, Maida, Carmelo Massimo, Mazzucco, Walter, Tramuto, Fabio, De Grazia, Simona, Giammanco, Giovanni Maurizio, Filizzolo, Chiara, Purpari, Giuseppa, Gucciardi, Francesca, Ferrante, Margherita, Agodi, Antonella, Barchitta, Martina, Cala', Piergiuseppe, Carducci, Annalaura, Verani, Marco, Federigi, Ileana, Macrì, Salvatore, Federici, Ermanno, Petricciuolo, Maya, Carnevali, Agnese, Russo, Francesca, Pitter, Gisella, Groppi, Vanessa, Rigoli, Franco, Zampini, Marco, Baldovin, Tatjana, Amoruso, Irene, Cadonna, Maria, Postinghel, Mattia, Foladori, Paola, Zago, Lorella, Stenico, Alberta, Marco, Morelli, Matteo, Dossena, La Rosa, G., Veneri, C, Brandtner, D, Mancini, P, Bonanno Ferraro, G, Iaconelli, M, Suffredini, E, Petrillo, M, Leoni, G, Paracchini, V, Gawlik, B, Marchini, A, Torlontano, P, Aprea, G, Scattolini, S, Acciari, V, La Bianca, M, Cifarelli, R, Palma, A, Lauria, G, La Vecchia, G, Giordano, V, Cossentino, L, Pennino, F, Lombardi, A, Gentili, L, Angelini, P, Nasci, D, Alborali, G, Formenti, N, Guarneri, F, Fontani, N, Guercio, M, Mariuz, M, Trani, G, Pariani, A, De Lellis, L, Ancona, C, Barca, A, Serio, F, Giorgi, D, Ferrante, I, Capparuccini, V, Scicluna, M, Cersini, A, Pietrella, G, Nicosia, E, Grasselli, E, Izzotti, A, Tomesani, I, Bellisomi, M, Rosatto, S, Ammoni, E, Cereda, D, Bertasi, B, Losio, M, Oliva, D, Castiglioni, S, Schiarea, S, Binda, S, Primache, V, Pellegrinelli, L, Cocuzza, C, Musumeci, R, Bolognini, L, Filippetti, F, Paniccia', M, Briscolini, S, Magi, S, Grucci, A, Colitti, M, Ciccaglione, A, Montanaro, C, Griglio, B, Costa, A, Decastelli, L, Romano, A, Bianchi, M, Carraro, E, Pignata, C, Macrì, M, Bonetta, S, Albano, N, Di Vittorio, G, Mongelli, O, Apollonio, F, Triggiano, F, De Giglio, O, Montagna, M, Palermo, M, Maida, C, Mazzucco, W, Tramuto, F, De Grazia, S, Giammanco, G, Filizzolo, C, Purpari, G, Gucciardi, F, Ferrante, M, Agodi, A, Barchitta, M, Cala', P, Carducci, A, Verani, M, Federigi, I, Macrì, S, Federici, E, Petricciuolo, M, Carnevali, A, Russo, F, Pitter, G, Groppi, V, Rigoli, F, Zampini, M, Baldovin, T, Amoruso, I, Cadonna, M, Postinghel, M, Foladori, P, Zago, L, Stenico, A, Marco, M, Matteo, D, La Rosa, G, Veneri, C., Brandtner, D., Mancini, P., Bonanno Ferraro, G., Iaconelli, M., Suffredini, E., Petrillo, M., Leoni, G., Paracchini, V., Gawlik, B. M., Marchini, A., Torlontano, Paolo, Aprea, Giuseppe, Scattolini, Silvia, Acciari, Vicdalia Aniela, La Bianca, Michele, Cifarelli, Rosa Anna, Palma, Achille, Lauria, Giuseppe, La Vecchia, Giovanna, Giordano, Vincenzo, Cossentino, Luigi, Pennino, Francesca, Lombardi, Annalisa, Gentili, Lisa, Angelini, Paola, Nasci, Daniele, Alborali, Giovanni, Formenti, Nicoletta, Guarneri, Flavia, Fontani, Nadia, Guercio, Marco, Mariuz, Marika, Trani, Gabriella, Pariani, Anna, De Lellis, Laura, Ancona, Carla, Barca, Alessandra, Serio, Flavia, Giorgi, Doriana Antonella, Ferrante, Irene, Capparuccini, Valeria, Scicluna, Maria Teresa, Cersini, Antonella, Pietrella, Gabriele, Nicosia, Elena, Grasselli, Elena, Izzotti, Alberto, Tomesani, Irene, Bellisomi, Marta, Rosatto, Stefano, Ammoni, Emanuela, Cereda, Danilo, Bertasi, Barbara, Losio, Marina Nadia, Oliva, Desdemona, Castiglioni, Sara, Schiarea, Silvia, Binda, Sandro, Primache, Valeria, Pellegrinelli, Laura, Cocuzza, Clementina, Musumeci, Rosario, Bolognini, Luigi, Filippetti, Fabio, Paniccia', Marta, Briscolini, Sara, Magi, Silvia, Grucci, Annalisa, Colitti, Michele, Ciccaglione, Angela, Montanaro, Carmen, Griglio, Bartolomeo, Costa, Angela, Decastelli, Lucia, Romano, Angelo, Bianchi, Manila, Carraro, Elisabetta, Pignata, Cristina, Macrì, Manuela, Bonetta, Silvia, Albano, Nehludoff, Di Vittorio, Giuseppe, Mongelli, Onofrio, Apollonio, Francesca, Triggiano, Francesco, De Giglio, Osvalda, Montagna, Maria Teresa, Palermo, Mario, Maida, Carmelo Massimo, Mazzucco, Walter, Tramuto, Fabio, De Grazia, Simona, Giammanco, Giovanni Maurizio, Filizzolo, Chiara, Purpari, Giuseppa, Gucciardi, Francesca, Ferrante, Margherita, Agodi, Antonella, Barchitta, Martina, Cala', Piergiuseppe, Carducci, Annalaura, Verani, Marco, Federigi, Ileana, Macrì, Salvatore, Federici, Ermanno, Petricciuolo, Maya, Carnevali, Agnese, Russo, Francesca, Pitter, Gisella, Groppi, Vanessa, Rigoli, Franco, Zampini, Marco, Baldovin, Tatjana, Amoruso, Irene, Cadonna, Maria, Postinghel, Mattia, Foladori, Paola, Zago, Lorella, Stenico, Alberta, Marco, Morelli, Matteo, Dossena, and La Rosa, G.

Abstract

The emergence of new SARS-CoV-2 variants poses challenges to global surveillance efforts, necessitating swift actions in their detection, evaluation, and management. Among the most recent variants, Omicron BA.2.86 and its sub-lineages have gained attention due to their potential immune evasion properties. This study describes the development of a digital PCR assay for the rapid detection of BA.2.86 and its descendant lineages, in wastewater samples. By using this assay, we analyzed wastewater samples collected in Italy from September 2023 to January 2024. Our analysis revealed the presence of BA.2.86 lineages already in October 2023 with a minimal detection rate of 2% which then rapidly increased, becoming dominant by January 2024, accounting for a prevalence of 62%. The findings emphasize the significance of wastewater-based surveillance in tracking emerging variants and underscore the efficacy of targeted digital PCR assays for environmental monitoring.

Published
2024

3. A Miniaturized Imaging Window to Quantify Intravital Tissue Regeneration within a 3D Microscaffold in Longitudinal Studies

Author

Conci, C, Jacchetti, E, Sironi, L, Gentili, L, Cerullo, G, Osellame, R, Chirico, G, Raimondi, M, Conci C., Jacchetti E., Sironi L., Gentili L., Cerullo G., Osellame R., Chirico G., Raimondi M. T., Conci, C, Jacchetti, E, Sironi, L, Gentili, L, Cerullo, G, Osellame, R, Chirico, G, Raimondi, M, Conci C., Jacchetti E., Sironi L., Gentili L., Cerullo G., Osellame R., Chirico G., and Raimondi M. T.

Abstract

The biocompatibility assessment of biomaterials or the dynamic response of implanted constructs entails inflammatory events primary reflected in cell behavior at the microcirculatory system. Current protocols are based on histopathology which are over 40 years old and require the sacrifice of a huge number of laboratory animal with an unsustainable ethical burden of animal research. Intravital microscopy techniques are actually used to study implantation outcomes in real time. However, no device providing a specific tracking geometry to reposition the field of view of the microscope, for repeated analyses, exists yet. The synthetic photoresist SZ2080 is characterized here, allowing the development and in vivo validation of a miniaturized imaging window, the Microatlas, that, fabricated via two-photon polymerization, is implanted in living chicken embryos and imaged by fluorescence microscopy 3 and 4 days after the implant. The characterization of their elastomechanical and fluorescence properties highlights planar raster spacing as the most important parameter in tuning the mechanical and spectroscopic features of the structures. The quantification of cell infiltration inside the Microatlas demonstrates its potential as novel scaffold for tissue regeneration and as beacon for 3D repositioning of the microscope field of view and correction of optical aberrations.

Published
2022

4. A miniaturized chip for 3D optical imaging of tissue regeneration in vivo

Author

Popp, J, Gergely, C, Conci, C, Jacchetti, E, Sironi, L, Gentili, L, Cerullo, G, Martinez, R, Osellame, R, Marini, M, Bouzin, M, Collini, M, D'Alfonso, L, Kabouraki, E, Farsari, M, Ranella, A, Kehagias, N, Chirico, G, Raimondi, M, Conci C., Jacchetti E., Sironi L., Gentili L., Cerullo G., Martinez R., Osellame R., Marini M., Bouzin M., Collini M., D'Alfonso L., Kabouraki E., Farsari M., Ranella A., Kehagias N., Chirico G., Raimondi M. T., Popp, J, Gergely, C, Conci, C, Jacchetti, E, Sironi, L, Gentili, L, Cerullo, G, Martinez, R, Osellame, R, Marini, M, Bouzin, M, Collini, M, D'Alfonso, L, Kabouraki, E, Farsari, M, Ranella, A, Kehagias, N, Chirico, G, Raimondi, M, Conci C., Jacchetti E., Sironi L., Gentili L., Cerullo G., Martinez R., Osellame R., Marini M., Bouzin M., Collini M., D'Alfonso L., Kabouraki E., Farsari M., Ranella A., Kehagias N., Chirico G., and Raimondi M. T.

Abstract

The current protocols for biocompatibility assessment of biomaterials, based on histopathology, require the sacrifice of a huge number of laboratory animals with an unsustainable ethical burden and remarkable cost. Intravital microscopy techniques can be used to study implantation outcomes in real time though with limited capabilities of quantification in longitudinal studies, mainly restricted by the light penetration and the spatial resolution in deep tissues. We present the outline and first tests of a novel chip which aims to enable longitudinal studies of the reaction to the biomaterial implant. The chip is composed of a regular reference microstructure fabricated via two-photon polymerization in the SZ2080 resist. The geometrical design and the planar raster spacing largely determine the mechanical and spectroscopic features of the microstructures. The development, in-vitro characterization and in vivo validation of the Microatlas is performed in living chicken embryos by fluorescence microscopy 3 and 4 days after the implant; the quantification of cell infiltration inside the Microatlas demonstrates its potential as novel scaffold for tissue regeneration.

Published
2022

5. The rapid spread of SARS-COV-2 Omicron variant in Italy reflected early through wastewater surveillance

Author

La Rosa, G, Iaconelli, M, Veneri, C, Mancini, P, Bonanno Ferraro, G, Brandtner, D, Lucentini, L, Bonadonna, L, Rossi, M, Grigioni, M, Suffredini, E, Bucciarelli, G, Torlontano, P, Aprea, G, La Bianca, M, Cifarelli, R, Palma, A, La Vecchia, G, Lauria, G, Brienza, R, Montenegro, P, D'Argenzio, A, Cossentino, L, Olivares, R, Pizzolante, A, Fusco, G, Tosco, A, Porta, A, Pennino, F, Maria, T, Angelini, P, De Lellis, L, Nasci, D, Alborali, G, Formenti, N, Guarneri, F, Fontani, N, Nani, G, Palumbo, F, Borlone, G, Guercio, M, Gentili, L, Mariuz, M, Trani, G, Pariani, A, Ancona, C, Giorgi, D, Ferrante, I, Monfrinotti, M, Riosa, S, Capparuccini, V, Scicluna, M, Cersini, A, Arizzi, M, Cecchini, G, Ottaviano, C, Nicosia, E, Grasselli, E, Allaria, G, Izzotti, A, Rosatto, S, Ammoni, E, Cereda, D, Losio, M, Bertasi, B, Aliscioni, A, Oliva, D, Castiglioni, S, Schiarea, S, Zuccato, E, Antonelli, M, Azzellino, A, Malpei, F, Turolla, A, Binda, S, Laura, P, Primache, V, Cocuzza, C, Franzetti, A, Bertanza, G, Callegari, M, Bolognini, L, Filippetti, F, Paniccia', M, Ciuti, F, Briscolini, S, Magi, S, Colitti, M, Montanaro, C, Cerroni, M, Griglio, B, Berruti, R, Cravero, M, Costa, A, Bianchi, M, Decastelli, L, Romano, A, Zuccon, F, Carraro, E, Pignata, C, Bonetta, S, Di Vittorio, G, Mongelli, O, De Giglio, O, Apollonio, F, Triggiano, F, Montagna, M, Ungaro, N, Palermo, M, Maida, C, Mazzucco, W, De Grazia, S, Giammanco, G, Purpari, G, Ferrante, M, Agodi, A, Barchitta, M, Cala', P, Carducci, A, Verani, M, Federigi, I, Lauretani, G, Muzio, S, Ramazzotti, M, Antonelli, A, Ricci, E, Santoro, G, Federici, E, Petricciuolo, M, Barigelli, S, Ruffier, M, Borney, F, Grange, E, Damasco, F, Russo, F, Pitter, G, Groppi, V, Rigoli, F, Zampini, M, Baldovin, T, Amoruso, I, Mengon, E, Cadonna, M, Postinghel, M, Pizzo, F, Schiavuzzi, A, Cutrupi, F, Foladori, P, Manara, S, Zago, L, Stenico, A, Prast, A, La Rosa G., Iaconelli M., Veneri C., Mancini P., Bonanno Ferraro G., Brandtner D., Lucentini L., Bonadonna L., Rossi M., Grigioni M., Suffredini E., Bucciarelli G., Torlontano P., Aprea G., La Bianca M., Cifarelli R. A., Palma A., La Vecchia G., Lauria G., Brienza R., Montenegro P., D'Argenzio A., Cossentino L., Olivares R., Pizzolante A., Fusco G., Tosco A., Porta A., Pennino F., Maria T., Angelini P., De Lellis L., Nasci D., Alborali G., Formenti N., Guarneri F., Fontani N., Nani G., Palumbo F., Borlone G., Guercio M., Gentili L., Mariuz M., Trani G., Pariani A., Ancona C., Giorgi D. A., Ferrante I., Monfrinotti M., Riosa S., Capparuccini V., Scicluna M. T., Cersini A., Arizzi M., Cecchini G., Ottaviano C., Nicosia E., Grasselli E., Allaria G., Izzotti A., Rosatto S., Ammoni E., Cereda D., Losio M. N., Bertasi B., Aliscioni A., Oliva D., Castiglioni S., Schiarea S., Zuccato E., Antonelli M., Azzellino A., Malpei F., Turolla A., Binda S., Laura P., Primache V., Cocuzza C., Franzetti A., Bertanza G., Callegari M. L., Bolognini L., Filippetti F., Paniccia' M., Ciuti F., Briscolini S., Magi S., Colitti M., Montanaro C., Cerroni M. G., Griglio B., Berruti R., Cravero M., Costa A., Bianchi M., Decastelli L., Romano A., Zuccon F., Carraro E., Pignata C., Bonetta S., Di Vittorio G., Mongelli O., De Giglio O., Apollonio F., Triggiano F., Montagna M. T., Ungaro N., Palermo M., Maida C. M., Mazzucco W., De Grazia S., Giammanco G., Purpari G., Ferrante M., Agodi A., Barchitta M., Cala' P., Carducci A., Verani M., Federigi I., Lauretani G., Muzio S., Ramazzotti M., Antonelli A., Ricci E., Santoro G., Federici E., Petricciuolo M., Barigelli S., Ruffier M., Borney F., Grange E., Damasco F., Russo F., Pitter G., Groppi V., Rigoli F., Zampini M., Baldovin T., Amoruso I., Mengon E., Cadonna M., Postinghel M., Pizzo F., Schiavuzzi A., Cutrupi F., Foladori P., Manara S., Zago L., Stenico A., Prast A. -M., La Rosa, G, Iaconelli, M, Veneri, C, Mancini, P, Bonanno Ferraro, G, Brandtner, D, Lucentini, L, Bonadonna, L, Rossi, M, Grigioni, M, Suffredini, E, Bucciarelli, G, Torlontano, P, Aprea, G, La Bianca, M, Cifarelli, R, Palma, A, La Vecchia, G, Lauria, G, Brienza, R, Montenegro, P, D'Argenzio, A, Cossentino, L, Olivares, R, Pizzolante, A, Fusco, G, Tosco, A, Porta, A, Pennino, F, Maria, T, Angelini, P, De Lellis, L, Nasci, D, Alborali, G, Formenti, N, Guarneri, F, Fontani, N, Nani, G, Palumbo, F, Borlone, G, Guercio, M, Gentili, L, Mariuz, M, Trani, G, Pariani, A, Ancona, C, Giorgi, D, Ferrante, I, Monfrinotti, M, Riosa, S, Capparuccini, V, Scicluna, M, Cersini, A, Arizzi, M, Cecchini, G, Ottaviano, C, Nicosia, E, Grasselli, E, Allaria, G, Izzotti, A, Rosatto, S, Ammoni, E, Cereda, D, Losio, M, Bertasi, B, Aliscioni, A, Oliva, D, Castiglioni, S, Schiarea, S, Zuccato, E, Antonelli, M, Azzellino, A, Malpei, F, Turolla, A, Binda, S, Laura, P, Primache, V, Cocuzza, C, Franzetti, A, Bertanza, G, Callegari, M, Bolognini, L, Filippetti, F, Paniccia', M, Ciuti, F, Briscolini, S, Magi, S, Colitti, M, Montanaro, C, Cerroni, M, Griglio, B, Berruti, R, Cravero, M, Costa, A, Bianchi, M, Decastelli, L, Romano, A, Zuccon, F, Carraro, E, Pignata, C, Bonetta, S, Di Vittorio, G, Mongelli, O, De Giglio, O, Apollonio, F, Triggiano, F, Montagna, M, Ungaro, N, Palermo, M, Maida, C, Mazzucco, W, De Grazia, S, Giammanco, G, Purpari, G, Ferrante, M, Agodi, A, Barchitta, M, Cala', P, Carducci, A, Verani, M, Federigi, I, Lauretani, G, Muzio, S, Ramazzotti, M, Antonelli, A, Ricci, E, Santoro, G, Federici, E, Petricciuolo, M, Barigelli, S, Ruffier, M, Borney, F, Grange, E, Damasco, F, Russo, F, Pitter, G, Groppi, V, Rigoli, F, Zampini, M, Baldovin, T, Amoruso, I, Mengon, E, Cadonna, M, Postinghel, M, Pizzo, F, Schiavuzzi, A, Cutrupi, F, Foladori, P, Manara, S, Zago, L, Stenico, A, Prast, A, La Rosa G., Iaconelli M., Veneri C., Mancini P., Bonanno Ferraro G., Brandtner D., Lucentini L., Bonadonna L., Rossi M., Grigioni M., Suffredini E., Bucciarelli G., Torlontano P., Aprea G., La Bianca M., Cifarelli R. A., Palma A., La Vecchia G., Lauria G., Brienza R., Montenegro P., D'Argenzio A., Cossentino L., Olivares R., Pizzolante A., Fusco G., Tosco A., Porta A., Pennino F., Maria T., Angelini P., De Lellis L., Nasci D., Alborali G., Formenti N., Guarneri F., Fontani N., Nani G., Palumbo F., Borlone G., Guercio M., Gentili L., Mariuz M., Trani G., Pariani A., Ancona C., Giorgi D. A., Ferrante I., Monfrinotti M., Riosa S., Capparuccini V., Scicluna M. T., Cersini A., Arizzi M., Cecchini G., Ottaviano C., Nicosia E., Grasselli E., Allaria G., Izzotti A., Rosatto S., Ammoni E., Cereda D., Losio M. N., Bertasi B., Aliscioni A., Oliva D., Castiglioni S., Schiarea S., Zuccato E., Antonelli M., Azzellino A., Malpei F., Turolla A., Binda S., Laura P., Primache V., Cocuzza C., Franzetti A., Bertanza G., Callegari M. L., Bolognini L., Filippetti F., Paniccia' M., Ciuti F., Briscolini S., Magi S., Colitti M., Montanaro C., Cerroni M. G., Griglio B., Berruti R., Cravero M., Costa A., Bianchi M., Decastelli L., Romano A., Zuccon F., Carraro E., Pignata C., Bonetta S., Di Vittorio G., Mongelli O., De Giglio O., Apollonio F., Triggiano F., Montagna M. T., Ungaro N., Palermo M., Maida C. M., Mazzucco W., De Grazia S., Giammanco G., Purpari G., Ferrante M., Agodi A., Barchitta M., Cala' P., Carducci A., Verani M., Federigi I., Lauretani G., Muzio S., Ramazzotti M., Antonelli A., Ricci E., Santoro G., Federici E., Petricciuolo M., Barigelli S., Ruffier M., Borney F., Grange E., Damasco F., Russo F., Pitter G., Groppi V., Rigoli F., Zampini M., Baldovin T., Amoruso I., Mengon E., Cadonna M., Postinghel M., Pizzo F., Schiavuzzi A., Cutrupi F., Foladori P., Manara S., Zago L., Stenico A., and Prast A. -M.

Abstract

The SARS-CoV-2 Omicron variant emerged in South Africa in November 2021, and has later been identified worldwide, raising serious concerns. A real-time RT-PCR assay was designed for the rapid screening of the Omicron variant, targeting characteristic mutations of the spike gene. The assay was used to test 737 sewage samples collected throughout Italy (19/21 Regions) between 11 November and 25 December 2021, with the aim of assessing the spread of the Omicron variant in the country. Positive samples were also tested with a real-time RT-PCR developed by the European Commission, Joint Research Centre (JRC), and through nested RT-PCR followed by Sanger sequencing. Overall, 115 samples tested positive for Omicron SARS-CoV-2 variant. The first occurrence was detected on 7 December, in Veneto, North Italy. Later on, the variant spread extremely fast in three weeks, with prevalence of positive wastewater samples rising from 1.0% (1/104 samples) in the week 5–11 December, to 17.5% (25/143 samples) in the week 12–18, to 65.9% (89/135 samples) in the week 19–25, in line with the increase in cases of infection with the Omicron variant observed during December in Italy. Similarly, the number of Regions/Autonomous Provinces in which the variant was detected increased from one in the first week, to 11 in the second, and to 17 in the last one. The presence of the Omicron variant was confirmed by the JRC real-time RT-PCR in 79.1% (91/115) of the positive samples, and by Sanger sequencing in 66% (64/97) of PCR amplicons. In conclusion, we designed an RT-qPCR assay capable to detect the Omicron variant, which can be successfully used for the purpose of wastewater-based epidemiology. We also described the history of the introduction and diffusion of the Omicron variant in the Italian population and territory, confirming the effectiveness of sewage monitoring as a powerful surveillance tool.

Published
2022

6. How do cardiologists select patients for dual antiplatelet therapy continuation beyond 1 year after a myocardial infarction? Insights from the EYESHOT Post-MI Study

Author

De Luca L., Colivicchi F., Meessen J., Uguccioni M., Piscione F., Bernabo P., Lardieri G., Granatelli A., Gabrielli D., Gulizia M. M., Silverio A., Benvenga R. M., Mascia F., Fusco A., Cicala S., Oltrona Visconti L., Marinoni B., Canosi U., Cirillo P., Trimarco B., Ziviello F., Grosseto D., Menozzi M., Mezzena D., Mauro C., Sasso A., Bellis A., Calabro P., Gragnano F., Cesaro A., Venturelli V., Porretta V., Borrelli N., Indolfi C., De Rosa S., Torella D., Morici N., Molfese M., Della Rovere F., Caiffa T., Moretto G., Grippo G., Di Vincenzo E., Lucisano L., Pennacchi M., Geraci G., Sanfilippo N., Ledda A., Di Lenarda A., Cherubini A., Russo G., Piemonte F., Di Donato A., Carraturo A., Villari B., Ciampi Q., Contaldi C., Pacher V., Corrada E., Cattani D., Nassiacos D., Meloni S., Barco B., Bonmassari R., Bertoldi A., Tedoldi F., Cannone M., Valenti G., Musci R. L., Caldarola P., Locuratolo N., Sublimi Saponetti L., Gentili L., Maiandi C., Caputo M., Capparuccia C. A., Tonella T., Massari F. M., Lupi A., Tessitori M., Montano M., Scaglione A., Torri A., Tortorella G., Navazio A., Cemin R., Latina L., Briguglia D., Marino R., Scalvini S., Zanelli E., Paganini V., Riboni G., Leiballi E., Della Mattia A., Imperadore F., Tespili M., Santangelo G., Parravicini U., Dellavesa P., Testa R., Venturini E., Feola M., Testa M., Crisci V., Tramontana M., Robiglio L., Varbella F., Meynet I., Galati A., Maddaluna A., Bilato C., Loddo I., Licciardello G., Cassaniti L., Scherillo M., Formigli D., Marullo L., Chianese L., Paolillo C., De Santis A. P. A., Brunetti N. D., Bottigliero D., Della Bona R., Giannico M. B., Tramarin R., Lucibello S., Perna G. P., Marini M., Colavita A. R., Raziliop A., Francese G. M., Mariani M., Collauto F., D'Urbano M., Naio R., Ando G., Saporito F., Assanelli E. M., Cabiati A., Crivaro A., Alberti S., Marchese I., Nejat T., Refice S., Raino R., Aiello A., Cristinziani G. R., Barilla F., Iorio R., Mascelli G., Tartaglione S. N., Di Chiara G., D'Andrea D., Antonicelli R., Malatesta G., Di Mario C., Mattesini A., Tramontana L., Conti S., Sommariva L., Celestini A., Amico F., Giubilato S., Amico A. F., De Filippis M., Pasini G. F., Triggiani M., Ferrara V., Cappetti S., Carugo S., Lucreziotti S., Persico M., Gizzi G., Cipolla T., Caronia A., Buia E., Pastori P., Scarpignato M., Biscottini E., Poletti F., Vimercati C., Pirola R., Barbieri E., Dugo C., De Cesare N., De Benedictis M. L., Ruggeri A., Campana C., Bonura S., Vigna C., Marchese N., Partesana N. G., Bandini P., Farinola G., Santoro D., Cassadonte F., Calabro F., Sansoni M., Abrignani M. G., Bonura F., Benvenuto M., Liso A., Passero T., Mori I., Pozzoni B., Prati F., Finocchiaro M. L., Tufano N., Miserrafiti B., Lacquaniti V., Del Piccolo F., Mohamad B., Spinnler M. T., Bovolo V., Rebulla E., Pieri M., Paloscia L., Di Clemente D., Mazzucco G., Micanti A., Peci P., Ornago O., Proietti F., Michisanti M., Reverzani A., Donatini A., Costa P., Russo S., Franceschini Grisolia E., Mario L., Di Palma F., Dell'Aquila F., Maestroni A., Caico S. I., De Caro G., Attianese L., Perotti S., Cotti Cometti V., Astengo D., Guerri E., Cianflone D., Maranta F., Esposito N., Malvezzi Caracciolo D'Aquino M., Caliendo L., Ricci C., Ceruso C. P., Lanteri S., Serdoz R., Bruno E., De Matteis C., Campagnuolo C., Ammirati M. A., Corrado V. M., Amado Eleas M. A., Fattore L., Ippoliti C., Turiano G., Piergentili C., Chiarella F., Capogrosso P., Perotti M., Di Marco S., Sibilio G., Di Lorenzo L., Aurelio A., Ramondo A. B., Zanna D., Cernetti C., Napolitano G., Negroni S., Alessandri N., Rigo F., Giusti F., Casu G., Vicentini A., Calculli G., Fera M. S., Lettica G. V., Vagheggini G., Piti A., Porfidia A., Di Leo A., Ravera A., Ciotta E., Sacca S., Silvestri O., Isidori S., Natali P., Anselmi M., Testa L., Antonelli A., Tavasci E., Furgi G., Lavorgna A., Gasparetto N., Bisceglia T., De Luca, L., Colivicchi, F., Meessen, J., Uguccioni, M., Piscione, F., Bernabo, P., Lardieri, G., Granatelli, A., Gabrielli, D., Gulizia, M. M., Silverio, A., Benvenga, R. M., Mascia, F., Fusco, A., Cicala, S., Oltrona Visconti, L., Marinoni, B., Canosi, U., Cirillo, P., Trimarco, B., Ziviello, F., Grosseto, D., Menozzi, M., Mezzena, D., Mauro, C., Sasso, A., Bellis, A., Calabro, P., Gragnano, F., Cesaro, A., Venturelli, V., Porretta, V., Borrelli, N., Indolfi, C., De Rosa, S., Torella, D., Morici, N., Molfese, M., Della Rovere, F., Caiffa, T., Moretto, G., Grippo, G., Di Vincenzo, E., Lucisano, L., Pennacchi, M., Geraci, G., Sanfilippo, N., Ledda, A., Di Lenarda, A., Cherubini, A., Russo, G., Piemonte, F., Di Donato, A., Carraturo, A., Villari, B., Ciampi, Q., Contaldi, C., Pacher, V., Corrada, E., Cattani, D., Nassiacos, D., Meloni, S., Barco, B., Bonmassari, R., Bertoldi, A., Tedoldi, F., Cannone, M., Valenti, G., Musci, R. L., Caldarola, P., Locuratolo, N., Sublimi Saponetti, L., Gentili, L., Maiandi, C., Caputo, M., Capparuccia, C. A., Tonella, T., Massari, F. M., Lupi, A., Tessitori, M., Montano, M., Scaglione, A., Torri, A., Tortorella, G., Navazio, A., Cemin, R., Latina, L., Briguglia, D., Marino, R., Scalvini, S., Zanelli, E., Paganini, V., Riboni, G., Leiballi, E., Della Mattia, A., Imperadore, F., Tespili, M., Santangelo, G., Parravicini, U., Dellavesa, P., Testa, R., Venturini, E., Feola, M., Testa, M., Crisci, V., Tramontana, M., Robiglio, L., Varbella, F., Meynet, I., Galati, A., Maddaluna, A., Bilato, C., Loddo, I., Licciardello, G., Cassaniti, L., Scherillo, M., Formigli, D., Marullo, L., Chianese, L., Paolillo, C., De Santis, A. P. A., Brunetti, N. D., Bottigliero, D., Della Bona, R., Giannico, M. B., Tramarin, R., Lucibello, S., Perna, G. P., Marini, M., Colavita, A. R., Francese, G. M., Mariani, M., Collauto, F., D'Urbano, M., Naio, R., Ando, G., Saporito, F., Assanelli, E. M., Cabiati, A., Crivaro, A., Alberti, S., Marchese, I., Nejat, T., Refice, S., Aiello, A., Cristinziani, G. R., Barilla, F., Iorio, R., Mascelli, G., Tartaglione, S. N., Di Chiara, G., D'Andrea, D., Antonicelli, R., Malatesta, G., Di Mario, C., Mattesini, A., Tramontana, L., Conti, S., Sommariva, L., Celestini, A., Amico, F., Giubilato, S., Amico, A. F., De Filippis, M., Pasini, G. F., Triggiani, M., Ferrara, V., Cappetti, S., Carugo, S., Lucreziotti, S., Persico, M., Gizzi, G., Cipolla, T., Caronia, A., Buia, E., Pastori, P., Scarpignato, M., Biscottini, E., Poletti, F., Vimercati, C., Pirola, R., Barbieri, E., Dugo, C., De Cesare, N., De Benedictis, M. L., Ruggeri, A., Campana, C., Bonura, S., Vigna, C., Marchese, N., Partesana, N. G., Bandini, P., Farinola, G., Santoro, D., Cassadonte, F., Calabro, F., Sansoni, M., Abrignani, M. G., Bonura, F., Benvenuto, M., Liso, A., Passero, T., Mori, I., Pozzoni, B., Prati, F., Finocchiaro, M. L., Tufano, N., Miserrafiti, B., Lacquaniti, V., Del Piccolo, F., Mohamad, B., Spinnler, M. T., Bovolo, V., Rebulla, E., Pieri, M., Paloscia, L., Di Clemente, D., Mazzucco, G., Micanti, A., Peci, P., Ornago, O., Proietti, F., Michisanti, M., Reverzani, A., Donatini, A., Costa, P., Russo, S., Franceschini Grisolia, E., Mario, L., Di Palma, F., Dell'Aquila, F., Maestroni, A., Caico, S. I., De Caro, G., Attianese, L., Perotti, S., Cotti Cometti, V., Astengo, D., Guerri, E., Cianflone, D., Maranta, F., Esposito, N., Malvezzi Caracciolo D'Aquino, M., Caliendo, L., Ricci, C., Ceruso, C. P., Lanteri, S., Serdoz, R., Bruno, E., De Matteis, C., Campagnuolo, C., Ammirati, M. A., Corrado, V. M., Amado Eleas, M. A., Fattore, L., Ippoliti, C., Turiano, G., Piergentili, C., Chiarella, F., Capogrosso, P., Perotti, M., Di Marco, S., Sibilio, G., Di Lorenzo, L., Aurelio, A., Ramondo, A. B., Zanna, D., Cernetti, C., Napolitano, G., Negroni, S., Alessandri, N., Rigo, F., Giusti, F., Casu, G., Vicentini, A., Calculli, G., Fera, M. S., Lettica, G. V., Vagheggini, G., Piti, A., Porfidia, A., Di Leo, A., Ravera, A., Ciotta, E., Sacca, S., Silvestri, O., Isidori, S., Natali, P., Anselmi, M., Testa, L., Antonelli, A., Tavasci, E., Furgi, G., Lavorgna, A., Gasparetto, N., Bisceglia, T., Raziliop, A., and Raino, R.

Subjects
Male, Multivariate analysis, Time Factors, medicine.medical_treatment, Myocardial Infarction, 030204 cardiovascular system & hematology, 0302 clinical medicine, Cardiologists, post‐MI, 030212 general & internal medicine, Myocardial infarction, Prospective Studies, Registries, intervention, risk, Dual Anti-Platelet Therapy, focused update, ticagrelor keywords plus:coronary-artery-disease, Atrial fibrillation, General Medicine, clopidogrel, dual antiplatelet therapy, percutaneous coronary intervention, post-mi, secondary prevention, dapt score, duration, management, Middle Aged, Clopidogrel, Treatment Outcome, Female, Cardiology and Cardiovascular Medicine, Ticagrelor, Human, medicine.drug, medicine.medical_specialty, animal structures, Time Factor, Clinical Investigations, Cardiologist, Drug Administration Schedule, Follow-Up Studie, ticagrelor, 03 medical and health sciences, Internal medicine, medicine, Humans, cardiovascular diseases, Aged, Aspirin, post-MI, Follow-Up Studies, Platelet Aggregation Inhibitors, Patient Selection, business.industry, Platelet Aggregation Inhibitor, Percutaneous coronary intervention, medicine.disease, Prospective Studie, Conventional PCI, Observational study, business
Abstract

Background Current guidelines suggest to consider dual antiplatelet therapy (DAPT) continuation for longer than 12 months in selected patients with myocardial infarction (MI). Hypothesis We sought to assess the criteria used by cardiologists in daily practice to select patients with a history of MI eligible for DAPT continuation beyond 1 year. Methods We analyzed data from the EYESHOT Post-MI, a prospective, observational, nationwide study aimed to evaluate the management of patients presenting to cardiologists 1 to 3 years from the last MI event. Results Out of the 1633 post-MI patients enrolled in the study between March and December 2017, 557 (34.1%) were on DAPT at the time of enrolment, and 450 (27.6%) were prescribed DAPT after cardiologist assessment. At multivariate analyses, a percutaneous coronary intervention (PCI) with multiple stents and the presence of peripheral artery disease (PAD) resulted as independent predictors of DAPT continuation, while atrial fibrillation was the only independent predictor of DAPT interruption for patients both at the second and the third year from MI at enrolment and the time of discharge/end of the visit. Conclusions Risk scores recommended by current guidelines for guiding decisions on DAPT duration are underused and misused in clinical practice. A PCI with multiple stents and a history of PAD resulted as the clinical variables more frequently associated with DAPT continuation beyond 1 year from the index MI.

Published
2019

13. Cerebrospinal fluid neurofilament light chain tracks cognitive impairment in multiple sclerosis

Author

Gaetani, L., Salvadori, N., Lisetti, V., Eusebi, P., Mancini, A., Gentili, L., Borrelli, A., Portaccio, E., Sarchielli, P., Blennow, K., Zetterberg, H., Parnetti, L., Calabresi, Paolo, Di Filippo, M., Calabresi P. (ORCID:0000-0003-0326-5509), Gaetani, L., Salvadori, N., Lisetti, V., Eusebi, P., Mancini, A., Gentili, L., Borrelli, A., Portaccio, E., Sarchielli, P., Blennow, K., Zetterberg, H., Parnetti, L., Calabresi, Paolo, Di Filippo, M., and Calabresi P. (ORCID:0000-0003-0326-5509)

Abstract

Background: Cognitive impairment (CI) is a disabling symptom of multiple sclerosis (MS). Axonal damage disrupts neural circuits and may play a role in determining CI, but its detection and monitoring are not routinely performed. Cerebrospinal fluid (CSF) neurofilament light chain (NfL) is a promising marker of axonal damage in MS. Objective: To retrospectively examine the relationship between CSF NfL and CI in MS patients. Methods: CSF NfL concentration was measured in 28 consecutive newly diagnosed MS patients who underwent a neuropsychological evaluation with the Brief Repeatable Battery of Neuropsychological tests (BRBN). Results: CSF NfL was higher in patients with overall CI (947.8 ± 400.7 vs 518.4 ± 424.7 pg/mL, p < 0.01), and with impairment in information processing speed (IPS) (820.8 ± 413.6 vs 513.6 ± 461.4 pg/mL, p < 0.05) and verbal fluency (1292 ± 511 vs 582.8 ± 395.4 pg/mL, p < 0.05), and it positively correlated with the number of impaired BRBN tests (r = 0.48, p = 0.01) and cognitive domains (r = 0.47, p = 0.01). Multivariate analyses taking into account potential confounders confirmed these findings. Conclusion: CSF NfL is higher in MS patients with CI and impaired IPS and verbal fluency. Large myelinated axons injury, causing neural disconnection, may be an important determinant of CI in MS and can be reliably measured through CSF NfL.

Published
2019

14. Cerebrospinal fluid neurofilament light chain predicts disease activity after the first demyelinating event suggestive of multiple sclerosis

Author

Gaetani, L., Eusebi, P., Mancini, A., Gentili, L., Borrelli, A., Parnetti, L., Calabresi, Paolo, Sarchielli, P., Blennow, K., Zetterberg, H., Di Filippo, M., Calabresi P. (ORCID:0000-0003-0326-5509), Gaetani, L., Eusebi, P., Mancini, A., Gentili, L., Borrelli, A., Parnetti, L., Calabresi, Paolo, Sarchielli, P., Blennow, K., Zetterberg, H., Di Filippo, M., and Calabresi P. (ORCID:0000-0003-0326-5509)

Abstract

Background: The prediction of disease activity in patients with a first demyelinating event suggestive of multiple sclerosis (MS) is of high clinical relevance. Cerebrospinal fluid (CSF) neurofilament light chain (NfL) has shown to have prognostic value in MS patients. In this work, we measured CSF NfL in patients at the first demyelinating event in order to find a cut-off value able to discriminate patients who will have disease activity from those who will remain stable during the follow-up. Methods: We included CSF samples collected within 30 days after the onset of the first demyelinating event from 32 patients followed-up for 3.8 ± 2.5 years. CSF NfL was measured with a newly developed in-house enzyme linked immunosorbent assay (ELISA). Results: At the first demyelinating event, patients with subsequent disease activity had significantly higher baseline CSF NfL values compared to clinically and radiologically stable patients (median 812.5 pg/mL, range 205–2359 pg/mL vs 329.5 pg/mL, range 156–3492 pg/mL, p = 0.002). A CSF NfL cut-off value of 500 pg/mL significantly discriminated these two groups of patients with a 90% sensitivity and an 83.3% specificity. Conclusion: Our results confirm that CSF NfL is a prognostic marker in the very early phases of MS. The validation of a cut-off value of 500 pg/mL could provide clinicians with a dichotomous variable that can simplify the prognostic assessment of patients at the first demyelinating event.

Published
2019

17. Treatment of multiple sclerosis relapses with high-dose methylprednisolone reduces the evolution of contrast-enhancing lesions into persistent black holes

Author

Di Gregorio, M., Gaetani, L., Eusebi, P., Floridi, P., Picchioni, A., Rosi, G., Mancini, A., Floridi, C., Baschieri, F., Gentili, L., Sarchielli, P., Calabresi, Paolo, Di Filippo, M., Calabresi P. (ORCID:0000-0003-0326-5509), Di Gregorio, M., Gaetani, L., Eusebi, P., Floridi, P., Picchioni, A., Rosi, G., Mancini, A., Floridi, C., Baschieri, F., Gentili, L., Sarchielli, P., Calabresi, Paolo, Di Filippo, M., and Calabresi P. (ORCID:0000-0003-0326-5509)

Abstract

Introduction: The MRI evidence of persistent black holes (pBHs) on T1-weighted images reflects brain tissue loss in multiple sclerosis (MS). The evolution of contrast-enhancing lesions (CELs) into pBHs probably depends on the degree and persistence of focal brain inflammation. The aim of our retrospective study was to evaluate the effect of a single cycle of intravenous methylprednisolone (IVMP), as for MS relapse treatment, on the risk of CELs’ evolution into pBHs. Patients and methods: We selected 57 patients with CELs on the baseline MRI scan. We evaluated the evolution of CELs into pBHs on a follow-up MRI scan performed after ≥ 6 months in patients exposed and not exposed to IVMP for the treatment of relapse after the baseline MRI. Results: In our cohort, 182 CELs were identified in the baseline MRI and 57 of them (31.3%) evolved into pBHs. In the multivariate analysis, the exposure of CELs to IVMP resulted to be a significant independent protective factor against pBHs’ formation (OR 0.28, 95% CI 0.11–0.766, p = 0.005), while ring enhancement pattern and the fact of being symptomatic were significant risk factors for CELs’ conversion into pBHs (OR 6.42, 95% CI 2.55–17.27, p OpenSPiltSPi 0.001 and OR 13.19, 95% CI 1.56–288.87, p = 0.037). Conclusions: The exposure of CELs to a cycle of IVMP as for relapse treatment is associated with a lower risk of CELs’ evolution into pBHs. Future studies are required to confirm the potential independent protective effect of IVMP on CELs’ evolution into pBHs.

Published
2018

19. Visual pathway involvement in multiple sclerosis: Look straight in the eyes

Author

Gaetani, L., Iaccheri, B., Cerquaglia, A., Gentili, L., Fiore, T., Di Gregorio, M., Mancini, A., Calabresi, P., Cagini, C., Sarchielli, P., Di Filippo, M., Calabresi P. (ORCID:0000-0003-0326-5509), Gaetani, L., Iaccheri, B., Cerquaglia, A., Gentili, L., Fiore, T., Di Gregorio, M., Mancini, A., Calabresi, P., Cagini, C., Sarchielli, P., Di Filippo, M., and Calabresi P. (ORCID:0000-0003-0326-5509)

Abstract

Visual symptoms are a common clinical manifestation of multiple sclerosis (MS) and are frequently due to acute optic neuritis (ON). However, the entire visual pathway can be involved throughout the disease course. We describe the case of a young MS patient who experienced visual symptoms that were eventually found to be caused by retinal periphlebitis, an inflammatory process of the anterior visual pathway, which is common during MS, but rarely symptomatic. This case reinforces the concept that in all MS patients complaining visual symptoms, a complete work-up should be performed in order to rule out possible ON mimicries.

Published
2017

23. Somatotropin function in term and premature newborns during the first month of life

Author

Radetti, G, Bozzola, M, Messner, H, Antoniazzi, Franco, Gentili, L, Autelli, M, and Tato', Luciano

Subjects
Age Factors, Infant, Newborn, Radioimmunoassay, Biological Availability, Gestational Age, Receptors, Somatotropin, premature newborns, Growth hormone deficiency, Insulin-Like Growth Factor Binding Proteins, Growth Hormone, Infant, Small for Gestational Age, Humans, Insulin-Like Growth Factor I, Child, Infant, Premature
Abstract

Neonatal somatotropic function is characterized by a discrepancy between elevated growth hormone (GH) levels and low IGF I levels. This study aimed at explaining this discrepancy, particularly to examining if it could result from low GH bioactivity. Serum concentrations of bioactive GH (bio GH), GH measured by radioimmunoassay (riGH), GH binding protein (GHBP), IGF I and IGF binding proteins (IGFBP) were determined in 27 premature and term newborns during the first month of life. At day 4, riGH and bio GH concentrations were elevated in both premature and term newborns as compared with normal prepubertal children; GHBP and IGF I levels were low, with a positive correlation with gestational age (P0.001). There was a positive correlation between GHBP and IGF I levels. IGFBP-1 and IGFBP-2 levels were elevated and negatively correlated with gestational age (P0.005). IGFBP-3 levels were within the range of prepubertal children values and positively correlated with gestational age (P0.005). During the first month, riGH and bio GH levels decreased in all infants, while IGFI levels increased in premature infants only, and GHBP levels in term infants only. The elevated levels of bio GH during the first days of life appear to be related to the low levels of IGF I due to a reduced number or function of GH receptors. In premature infants the decrease in GH levels observed afterwards appears to be secondary to the increase in IGF I levels. In term infants, in the absence of increase in IGFI levels other(s) factor(s) seem(s) to be involved.

Published
1998

42. An internal model approach to implicit fault tolerant control for port-Hamiltonian systems

Author

Gentili, L., Paoli, A., Bonivento, C., Gentili, L., Paoli, A., and Bonivento, C.

Abstract

In this paper an internal model based approach to implicit Fault Tolerant Control for port-Hamiltonian systems is presented: the main idea is to cast the problem into a regulation problem in presence of input disturbances representing exogenous effects of possible faults; this can be solved following an adaptive internal model based approach. The theoretical machinery exploited is specialized for the energy-based port-Hamiltonian formalism in order to prove the global asymptotical stability of the solution. Finally an application example is presented in order to deeply point out the effectiveness of the design procedure presented: a Fault Tolerant Control problem is solved for a magnetic levitation system affected by periodic voltage disturbances. © Springer-Verlag Berlin Heidelberg 2007.

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