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2 results on '"Loretta Fiorina"'

1. EBV DNA increase in COVID-19 patients with impaired lymphocyte subpopulation count

Author

Stefania Paolucci, Irene Cassaniti, Federica Novazzi, Loretta Fiorina, Antonio Piralla, Giuditta Comolli, Raffaele Bruno, Renato Maserati, Roberto Gulminetti, Stefano Novati, Francesco Mojoli, Fausto Baldanti, R Bruno, M Mondelli, E Brunetti, A Di Matteo, E Seminari, L Maiocchi, V Zuccaro, L Pagnucco, B Mariani, S Ludovisi, R Lissandrin, A Parisi, P Sacchi, SFA Patruno, G Michelone, R Gulminetti, D Zanaboni, S Novati, R Maserati, P Orsolini, M Vecchia, M Sciarra, E Asperges, M Colaneri, A Di Filippo, M Sambo, S Biscarini, M Lupi, S Roda, TC Pieri, I Gallazzi, M Sachs, P Valsecchi, S Perlini, C Alfano, M Bonzano, F Briganti, G Crescenzi, AG Falchi, R Guarnone, B Guglielmana, E Maggi, I Martino, P Pettenazza, S Pioli di Marco, F Quaglia, A Sabena, F Salinaro, F Speciale, I Zunino, M De Lorenzo, G Secco, L Dimitry, G Cappa, I Maisak, B Chiodi, M Sciarrini, B Barcella, F Resta, L Moroni, G Vezzoni, L Scattaglia, E Boscolo, C Zattera, MF Tassi, V Capozza, D Vignaroli, M Bazzini, G Iotti, F Mojoli, M Belliato, L Perotti, S Mongodi, G Tavazzi, G Marseglia, A Licari, I Brambilla, D Barbarini, A Bruno, P Cambieri, G Campanini, C. Cavanna, G Comolli, M Corbella, R Daturi, M Furione, P Marone, E Monzillo, S Paolucci, M Parea, E Percivalle, A Piralla, F Rovida, A Sarasini, M Zavattoni, G Adzasehoun, M Ardizzone, L Bellotti, V Brunco, E Cabano, G Casali, L Capella, D Devitis, L Dossena, G Frisco, G Garbagnoli, F Gardellini, A Girello, A Guerrizio, V Landini, C Lucchelli, V Maliardi, P Piemontese, S Pezzaia, M Premoli, C Rebuffa, C Zanello, J Bagnarino, F Bergami, A Bonetti, G Caneva, I Cassaniti, A Corcione, R Di Martino, A Di Napoli, A Ferrari, G Ferrari, L Fiorina, A Gallone, F Giardina, A Girardi, A Mercato, C Merla, F Novazzi, G Ratano, B Rossi, G Saveriaempillai, IM Sciabica, M Tallarita, E Vecchio Nepita, J Vitali, A Cerino, S Varchetta, B Oliviero, S Mantovani, D Mele, M Calvi, M Tizzoni, C Nicora, A Triarico, V Petronella, C Marena, A Muzzi, P Lago, S Cutti, V Novelli, F Comandatore, G BatistiBiffignandi, S Gaiarsa, M Rettani, and C Bandi

Subjects
COVID-19, EBV DNA, Lymphocyte subpopulation, Infectious and parasitic diseases, RC109-216
Abstract

Objectives: The immunologic profile and opportunistic viral DNA increase were monitored in Italian patients with COVID-19 in order to identify markers of disease severity. Methods: A total of 104 patients infected with SARS-CoV-2 were evaluated in the study. Of them, 42/104 (40.4%) were hospitalized in an intensive care unit (ICU) and 62/104(59.6%) in a sub-intensive care unit (SICU). Human cytomegalovirus (HCMV) and Epstein-Barr virus (EBV), Parvovirus B19 and Human Herpesvirus 6 virus reactivations were determined by real-time PCR, and lymphocyte subpopulation counts were determined by flow cytometry. Results: Among opportunistic viruses, only EBV was consistently detected. EBV DNA was observed in 40/42 (95.2%) of the ICU patients and in 51/61 (83.6%) of the SICU patients. Comparing the two groups of patients, the EBV DNA median level among ICU patients was significantly higher than that observed in SICU patients. In parallel, a significant reduction of CD8 T cell and NK count in ICU patients as compared with SICU patients was observed (p

Published
2021
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2. Detection of Genotype-Specific Antibody Responses to Glycoproteins B and H in Primary and Non-Primary Human Cytomegalovirus Infections by Peptide-Based ELISA

Author

Federica Zavaglio, Loretta Fiorina, Nicolás M. Suárez, Chiara Fornara, Marica De Cicco, Daniela Cirasola, Andrew J. Davison, Giuseppe Gerna, and Daniele Lilleri

Subjects
human cytomegalovirus, glycoprotein B, glycoprotein H, genotype, antibody, primary infection, Microbiology, QR1-502
Abstract

Background: Strain-specific antibodies to human cytomegalovirus (HCMV) glycoproteins B and H (gB and gH) have been proposed as a potential diagnostic tool for identifying reinfection. We investigated genotype-specific IgG antibody responses in parallel with defining the gB and gH genotypes of the infecting viral strains. Methods: Subjects with primary (n = 20) or non-primary (n = 25) HCMV infection were studied. The seven gB (gB1-7) and two gH (gH1-2) genotypes were determined by real-time PCR and whole viral genome sequencing, and genotype-specific IgG antibodies were measured by a peptide-based enzyme-linked immunosorbent assay (ELISA). Results: Among subjects with primary infection, 73% (n = 8) infected by gB1-HCMV and 63% (n = 5) infected by gB2/3-HCMV had genotype-specific IgG antibodies to gB (gB2 and gB3 are similar in the region tested). Peptides from the rarer gB4-gB7 genotypes had nonspecific antibody responses. All subjects infected by gH1-HCMV and 86% (n = 6) infected by gH2-HCMV developed genotype-specific responses. Among women with non-primary infection, gB and gH genotype-specific IgG antibodies were detected in 40% (n = 10) and 80% (n = 20) of subjects, respectively. Conclusions: Peptide-based ELISA is capable of detecting primary genotype-specific IgG responses to HCMV gB and gH, and could be adopted for identifying reinfections. However, about half of the subjects did not have genotype-specific IgG antibodies to gB.

Published
2021
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