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

Author

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

Published
2021
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3. Low risk for SARS-CoV2 symptomatic infection and early complications in paediatric patients during the ongoing CoVID19 epidemics in Lombardy

Author

Bruno, R., Mondelli, M., Brunetti, E., Di Matteo, A., Seminari, E., Maiocchi, L., Zuccaro, V., Pagnucco, L., Mariani, B., Ludovisi, S., Lissandrin, R., Parisi, A., Sacchi, P., Patruno, S.F.A., Michelone, G., Gulminetti, R., Zanaboni, D., Novati, S., Maserati, R., Orsolini, P., Vecchia, M., Sciarra, M., Asperges, E., Colaneri, M., Di Filippo, A., Sambo, M., Biscarini, S., Lupi, M., Roda, S., Pieri, T.C., Gallazzi, I., Sachs, M., Valsecchi, P., Perlini, S., Alfano, C., Bonzano, M., Briganti, F., Crescenzi, G., Falchi, A.G., Guarnone, R., Guglielmana, B., Maggi, E., Martino, I., Pettenazza, P., Pioli di Marco, S., Quaglia, F., Sabena, A., Salinaro, F., Speciale, F., Zunino, I., De Lorenzo, M., Secco, G., Dimitry, L., Cappa, G., Maisak, I., Chiodi, B., Sciarrini, M., Barcella, B., Resta, F., Moroni, L., Vezzoni, G., Scattaglia, L., Boscolo, E., Zattera, C., Tassi, M.F., Capozza, V., Vignaroli, D., Bazzini, M., Iotti, G., Mojoli, F., Belliato, M., Perotti, L., Mongodi, S., Tavazzi, G., Marseglia, G., Licari, A., Brambilla, I., Barbarini, D., Bruno, A., Cambieri, P., Campanini, G., Comolli, G., Corbella, M., Daturi, R., Furione, M., Monzillo, E., Paolucci, S., Parea, M., Percivalle, E., Piralla, A., Rovida, F., Sarasini, A., Zavattoni, M., Adzasehoun, G., Bellotti, L., Cabano, E., Casali, G., Dossena, L., Frisco, G., Garbagnoli, G., Girello, A., Landini, V., Lucchelli, C., Maliardi, V., Pezzaia, S., Premoli, M., Bonetti, A., Caneva, G., Cassaniti, I., Corcione, A., Di Martino, R., Di Napoli, A., Ferrari, A., Ferrari, G., Fiorina, L., Giardina, F., Mercato, A., Novazzi, F., Ratano, G., Rossi, B., Sciabica, I.M., Tallarita, M., Vecchio Nepita, E., Calvi, M., Tizzoni, M., Nicora, C., Triarico, A., Petronella, V., Marena, C., Muzzi, A., Lago, P., Cereda, D., Marseglia, G.L., and Baldanti, F.

Published
2020
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5. EBV DNA increase in COVID-19 patients with impaired lymphocyte subpopulation count

Author

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

Published
2021
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6. Detection of the SARS-CoV-2 in different biologic specimens from positive patients with COVID-19, in Northern Italy

Author

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

Subjects
medicine.medical_specialty, Coronavirus disease 2019 (COVID-19), Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), education, Immunology, medicine.disease_cause, SARS‐CoV‐2, Covid‐19 in Children and Adolescents, 03 medical and health sciences, 2020 Update from The Italian Society of Pediatric Allergy and Immunology, 0302 clinical medicine, COVID‐19, Internal medicine, Epidemiology, transmission routes, medicine, Immunology and Allergy, 030212 general & internal medicine, Pediatrics, Perinatology, and Child Health, Coronavirus, swabs, specimen types, northern Italy, business.industry, SARS-CoV-2, COVID-19, medicine.disease, epidemiology, Northern italy, Pneumonia, 030228 respiratory system, Respiratory secretion, Nasal Swab, Pediatrics, Perinatology and Child Health, Supplement Article, business
Abstract

Coronavirus disease 2019 (COVID‐19) diagnosis is based on molecular detection of SARS‐CoV‐2 in respiratory samples such as nasal swab (NS) However, the evidence that NS in patients with pneumonia was sometimes negative raises the attention to collect other clinical specimens SARS‐CoV‐2 was shown in 10 3% rectal swabs (RS), 7 7% plasma, 1% urine, and 0% feces from 143 NS‐positive patients Potential infection by fluids different from respiratory secretion is possible but unlikely [ABSTRACT FROM AUTHOR] Copyright of Pediatric Allergy & Immunology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission However, users may print, download, or email articles for individual use This abstract may be abridged No warranty is given about the accuracy of the copy Users should refer to the original published version of the material for the full abstract (Copyright applies to all Abstracts )

Published
2020

7. Low risk for SARS-CoV2 symptomatic infection and early complications in paediatric patients during the ongoing CoVID19 epidemics in Lombardy

Author

Rovida, F., primary, Cereda, D., additional, Novati, S., additional, Licari, A., additional, Triarico, A., additional, Marseglia, G.L., additional, Bruno, R., additional, Baldanti, F., additional, Mondelli, M., additional, Brunetti, E., additional, Di Matteo, A., additional, Seminari, E., additional, Maiocchi, L., additional, Zuccaro, V., additional, Pagnucco, L., additional, Mariani, B., additional, Ludovisi, S., additional, Lissandrin, R., additional, Parisi, A., additional, Sacchi, P., additional, Patruno, S.F.A., additional, Michelone, G., additional, Gulminetti, R., additional, Zanaboni, D., additional, Maserati, R., additional, Orsolini, P., additional, Vecchia, M., additional, Sciarra, M., additional, Asperges, E., additional, Colaneri, M., additional, Di Filippo, A., additional, Sambo, M., additional, Biscarini, S., additional, Lupi, M., additional, Roda, S., additional, Pieri, T.C., additional, Gallazzi, I., additional, Sachs, M., additional, Valsecchi, P., additional, Perlini, S., additional, Alfano, C., additional, Bonzano, M., additional, Briganti, F., additional, Crescenzi, G., additional, Falchi, A.G., additional, Guarnone, R., additional, Guglielmana, B., additional, Maggi, E., additional, Martino, I., additional, Pettenazza, P., additional, Pioli di Marco, S., additional, Quaglia, F., additional, Sabena, A., additional, Salinaro, F., additional, Speciale, F., additional, Zunino, I., additional, De Lorenzo, M., additional, Secco, G., additional, Dimitry, L., additional, Cappa, G., additional, Maisak, I., additional, Chiodi, B., additional, Sciarrini, M., additional, Barcella, B., additional, Resta, F., additional, Moroni, L., additional, Vezzoni, G., additional, Scattaglia, L., additional, Boscolo, E., additional, Zattera, C., additional, Tassi, M.F., additional, Capozza, V., additional, Vignaroli, D., additional, Bazzini, M., additional, Iotti, G., additional, Mojoli, F., additional, Belliato, M., additional, Perotti, L., additional, Mongodi, S., additional, Tavazzi, G., additional, Marseglia, G., additional, Brambilla, I., additional, Barbarini, D., additional, Bruno, A., additional, Cambieri, P., additional, Campanini, G., additional, Comolli, G., additional, Corbella, M., additional, Daturi, R., additional, Furione, M., additional, Monzillo, E., additional, Paolucci, S., additional, Parea, M., additional, Percivalle, E., additional, Piralla, A., additional, Rovida, F., additional, Sarasini, A., additional, Zavattoni, M., additional, Adzasehoun, G., additional, Bellotti, L., additional, Cabano, E., additional, Casali, G., additional, Dossena, L., additional, Frisco, G., additional, Garbagnoli, G., additional, Girello, A., additional, Landini, V., additional, Lucchelli, C., additional, Maliardi, V., additional, Pezzaia, S., additional, Premoli, M., additional, Bonetti, A., additional, Caneva, G., additional, Cassaniti, I., additional, Corcione, A., additional, Di Martino, R., additional, Di Napoli, A., additional, Ferrari, A., additional, Ferrari, G., additional, Fiorina, L., additional, Giardina, F., additional, Mercato, A., additional, Novazzi, F., additional, Ratano, G., additional, Rossi, B., additional, Sciabica, I.M., additional, Tallarita, M., additional, Vecchio Nepita, E., additional, Calvi, M., additional, Tizzoni, M., additional, Nicora, C., additional, Petronella, V., additional, Marena, C., additional, Muzzi, A., additional, and Lago, P., additional

Published
2020
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8. Tetracycline Susceptibility in Chlamydia suis Pig Isolates

Author

Fabien Vorimore, Manuela Donati, Antonietta Di Francesco, Nicole Borel, Federico Morandi, Karine Laroucau, Edoardo Vecchio Nepita, Andrea Balboni, Rachid Aaziz, Donati, M, Balboni, A, Laroucau, K, Aaziz, R, Vorimore, F, Borel, N, Morandi, F, Vecchio Nepita, E, Di Francesco, A, and University of Zurich

Subjects
0301 basic medicine, pig, Swine, lcsh:Medicine, Gene Expression, Artificial Gene Amplification and Extension, Chlamydia sui, Polymerase Chain Reaction, Biochemistry, law.invention, Chlamydia Infection, chemistry.chemical_compound, law, Antibiotics, Nucleic Acids, Gene expression, Medicine and Health Sciences, Chlamydia, lcsh:Science, Polymerase chain reaction, Swine Diseases, Mammals, Multidisciplinary, biology, Antimicrobials, Tetracycline Resistance, Drugs, Agriculture, Anti-Bacterial Agents, RNA, Ribosomal, 23S, Real-time polymerase chain reaction, Infectious Diseases, Italy, Tetracyclines, Vertebrates, medicine.drug, Research Article, DNA, Bacterial, Livestock, Tetracycline, 030106 microbiology, Sexually Transmitted Diseases, 10184 Institute of Veterinary Pathology, 1100 General Agricultural and Biological Sciences, Microbial Sensitivity Tests, Real-Time Polymerase Chain Reaction, Research and Analysis Methods, Microbiology, 03 medical and health sciences, Extraction techniques, stomatognathic system, Bacterial Proteins, 1300 General Biochemistry, Genetics and Molecular Biology, Chlamydia suis, Microbial Control, medicine, Genetics, Animals, TetR, Gene Regulation, Molecular Biology Techniques, Molecular Biology, Pharmacology, 1000 Multidisciplinary, Bacteria, lcsh:R, Organisms, Biology and Life Sciences, DNA, biochemical phenomena, metabolism, and nutrition, Chlamydia Infections, biology.organism_classification, medicine.disease, Virology, RNA extraction, Repressor Proteins, chemistry, reverse transcription, 570 Life sciences, lcsh:Q, real-time PCR
Abstract

The aims of the present study were to assess the prevalence of Chlamydia suis in an Italian pig herd, determine the tetracycline susceptibility of C. suis isolates, and evaluate tet(C) and tetR(C) gene expression. Conjunctival swabs from 20 pigs were tested for C. suis by real-time polymerase chain reaction, and 55% (11) were positive. C. suis was then isolated from 11 conjunctival swabs resampled from the same herd. All positive samples and isolates were positive for the tet(C) resistance gene. The in vitro susceptibility to tetracycline of the C. suis isolates showed MIC values ranging from 0.5 to 4 μg/mL. Tet(C) and tetR(C) transcripts were found in all the isolates, cultured both in the absence and presence of tetracycline. This contrasts with other Gram-negative bacteria in which both genes are repressed in the absence of the drug. Further investigation into tet gene regulation in C. suis is needed.

Published
2015

9. Seroprevalence of SARS-CoV-2 in blood donors from the Lodi Red Zone and adjacent Lodi metropolitan and suburban area.

Author

Cassaniti I, Percivalle E, Sarasini A, Cambiè G, Vecchio Nepita E, Maserati R, Ferrari A, Corcione A, Di Martino R, Bonetti A, Di Napoli A, Ferrari G, and Baldanti F

Subjects
Blood Donors, COVID-19 immunology, COVID-19 Testing, Cohort Studies, Communicable Disease Control, Humans, Immunoglobulin G blood, Italy epidemiology, Prevalence, SARS-CoV-2 immunology, SARS-CoV-2 isolation & purification, Seroepidemiologic Studies, Serologic Tests, Antibodies, Neutralizing blood, Antibodies, Viral blood, COVID-19 epidemiology
Abstract

Objectives: To define the seroprevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in blood donors (referred to the first lockdown area (Lodi Red-Zone) of the Lombardy region and in a contiguous area that was not included in the first lockdown); to define the agreement between a commercial serological assay and a reference microneutralization assay; and to evaluate the persistence of SARS-CoV-2 neutralizing antibodies in a cohort of blood donors., Methods: Blood donors referred to the first lockdown area in Lombardy Region and the neighbouring area were analysed for SARS-CoV-2 IgG-specific antibodies during the period 18 March to 24 June 2020. Serum samples were analysed using both a chemiluminescent immunoassay (LIAISON® SARS-CoV-2 S1/S2 IgG, DiaSorin) for the quantitative characterization of SARS-CoV-2 anti-S1 and anti-S2 IgG antibodies and a neutralizing antibodies (NT-Abs) assay., Results: In the period from 18 March to 24 June, 1922 blood donors were tested for the presence of SARS-CoV-2 IgG showing a prevalence of 378/1922 (19.7%). A subgroup of 1139 blood donors were tested in parallel with a SARS-CoV-2 IgG assay and a microneutralization assay showing a prevalence of 22.2% and 21.6%, respectively. SARS-CoV-2 IgG quantification was correlated with NT-Abs titres. In 78.2% of participants the NT-Abs titre was maintained, but in 15.8% it decreased by one four-fold dilution and in 6.0% it increased by one four-fold dilution., Conclusions: The duration of immunity of SARS-CoV-2 is crucial for the course of the pandemic and for this reason the monitoring of NT Abs is important. Despite a stable NT-Abs titre being observed in the majority of blood donors, our findings need to be validated in a long-term period of follow up., (Copyright © 2021 European Society of Clinical Microbiology and Infectious Diseases. Published by Elsevier Ltd. All rights reserved.)

Published
2021
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10. Residual SARS-CoV-2 RNA in nasal swabs of convalescent COVID-19 patients: Is prolonged quarantine always justified?

Author

Piralla A, Ricchi M, Cusi MG, Prati P, Vicari N, Scarsi G, Gandolfo C, Anichini G, Terrosi C, Percivalle E, Vecchio Nepita E, Bergami F, Tallarita M, Di Martino R, Ferrari A, Rovida F, Lunghi G, Schiavo R, and Baldanti F

Subjects
Adult, COVID-19 diagnosis, COVID-19 transmission, COVID-19 Testing, Disease Progression, Female, Humans, Male, Middle Aged, Nose virology, Prospective Studies, Real-Time Polymerase Chain Reaction, SARS-CoV-2 genetics, SARS-CoV-2 physiology, Time Factors, Viral Load, Young Adult, COVID-19 virology, Quarantine, RNA, Viral genetics, SARS-CoV-2 isolation & purification
Abstract

Real-time reverse transcription PCR is currently the most sensitive method to detect severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Defining whether a patient could be contagious or not contagious in the presence of residual SARS-CoV-2 RNA is of extreme importance in the context of public health. In this prospective multicenter study, virus isolation was prospectively attempted in 387 nasal swabs from clinically recovered patients showing low viral load (quantification cycle, Cq, value greater than 30). The median Cq value was 36.8 (range 30.0-39.4). Overall, a cytopathic effect was detected in nine samples, corresponding to a culture positivity rate of 2.3% (9/387). The results of this study help to dissect true virus replication and residual viral RNA detection in recovered patients., (Copyright © 2020 The Authors. Published by Elsevier Ltd.. All rights reserved.)

Published
2021
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11. Plasma from donors recovered from the new Coronavirus 2019 as therapy for critical patients with COVID-19 (COVID-19 plasma study): a multicentre study protocol.

Author

Perotti C, Del Fante C, Baldanti F, Franchini M, Percivalle E, Vecchio Nepita E, Seminari E, De Silvestri A, Bruno R, and Klersy C

Subjects
Humans, Pandemics, SARS-CoV-2 immunology, Multicenter Studies as Topic, Proof of Concept Study, COVID-19 immunology, COVID-19 therapy, COVID-19 Serotherapy, Immunization, Passive methods, Plasma immunology
Abstract

Since the end of 2019, a new coronavirus strain has been reported in the Chinese province of Wuhan, indicated as 2019-nCoV or SARS-CoV-2. In February 2020, the first case of transmission on Italian soil was reported. On March 09, 2020, at the time of protocol design, the Italian Ministry of Health reported 10,149 people who had contracted the virus; of these, 8514 were positive, of which 5038 were hospitalized with symptoms (59.2%) and 877 in intensive care (10.3%), while the remaining 2599 were in home isolation; 631 were deceased (6.2%) and 1004 healed (9.9%). To date there are no studies in the literature that demonstrate its feasibility and efficacy in the context of the worldwide SARS-CoV-2 epidemic. Based upon the little existing evidence, we planned to assess the efficacy of the infusion of hyperimmune plasma in COVID-19 patients in a one-arm proof-of-concept clinical trial. The primary objective of our study is to evaluate the efficacy of the administration of plasma taken from convalescent donors of COVID-19 to critically ill patients with COVID-19 in terms of their survival. Death from any cause will be considered. The main limit of this study is its one-arm proof-of-concept design with only 43 patients enrolled. However, in the absence of previous evidence, larger and/or randomized trials did not appear to be ethically acceptable. Moreover, the results from this study, if encouraging, will allow us to plan further informed large clinical trials. Trial registration: NCT04321421 March 23, 2020.

Published
2020
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12. Clinical application of Bruker Biotyper MALDI-TOF/MS system for real-time identification of KPC production in Klebsiella pneumoniae clinical isolates.

Author

Gaibani P, Ambretti S, Tamburini MV, Vecchio Nepita E, and Re MC

Subjects
Humans, Klebsiella Infections diagnosis, Klebsiella pneumoniae chemistry, Klebsiella pneumoniae enzymology, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization methods, beta-Lactamases metabolism, Bacterial Typing Techniques methods, Klebsiella Infections microbiology, Klebsiella pneumoniae isolation & purification, Tandem Mass Spectrometry methods, beta-Lactamases chemistry
Published
2018
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13. Biomimetic fabrication of antibacterial calcium phosphates mediated by polydopamine.

Author

Forte L, Torricelli P, Bonvicini F, Boanini E, Gentilomi GA, Lusvardi G, Della Bella E, Fini M, Vecchio Nepita E, and Bigi A

Subjects
Anti-Bacterial Agents chemistry, Cell Line, Cell Survival, Coated Materials, Biocompatible chemistry, Humans, Nanoparticles chemistry, Osteoblasts chemistry, Osteoblasts cytology, Osteoblasts drug effects, Polymerase Chain Reaction, Silver chemistry, Surface Properties, Anti-Bacterial Agents chemical synthesis, Biomimetics, Calcium Phosphates chemistry, Indoles chemistry, Polymers chemistry
Abstract

In this work we developed new antibacterial composite materials using polydopamine (PDA) to trigger the deposition of silver nanoparticles (AgNPs) onto calcium phosphates, namely octacalcium phosphate (OCP) and α-tricalcium phosphate (αTCP). Functionalization of OCP and αTCP with a self-polymerized polydopamine layer was obtained by soaking the calcium phosphates in dopamine solution. The PDA surface of functionalized calcium phosphates (OCPd and αTCPd) promoted the deposition of AgNPs by reducing silver ions when soaked in a silver nitrate solution. The amount of deposited AgNPs can be modulated by varying the concentration of silver nitrate solution and the type of substrate. The results of in vitro tests carried out with osteoblast-like MG63 cells indicate that the combination of AgNPs with OCP provides more biocompatible materials than those obtained using αTCP as substrate. In particular, the study of osteoblast activity and differentiation was focused on the samples OCPdAg5 (silver content=8.2wt%) and αTCPdAg5 (silver content=4.7wt%), which did not show any cytotoxicity, and compared with those obtained on pure OCP and αTCP. The results demonstrate that the AgNPs loaded materials support osteoblast viability and differentiation, whereas they significantly inhibit the growth of relevant antibiotic-resistant pathogenic bacteria., (Copyright © 2017 Elsevier Inc. All rights reserved.)

Published
2018
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14. Activity of synthetic peptides against Chlamydia.

Author

Donati M, Cenacchi G, Biondi R, Papa V, Borel N, Vecchio Nepita E, Magnino S, Pasquinelli G, Levi A, and Franco OL

Subjects
Amino Acid Sequence, Chlamydia drug effects, Intercellular Signaling Peptides and Proteins, Microscopy, Electron, Transmission, Peptides chemistry, Peptides pharmacology, Wasp Venoms chemical synthesis, Wasp Venoms chemistry, Wasp Venoms metabolism, Wasp Venoms pharmacology, Peptides chemical synthesis
Abstract

The in vitro activity of six synthetic peptides against 36 strains of Chlamydia from different origins was investigated. Clavanin MO (CMO) proved to be the most active peptide, reducing the inclusion number of all Chlamydia strains from eight different species tested by ≥50% at 10 µg mL -1 . Mastoparan L showed an equal activity against C. trachomatis, C. pneumoniae, C. suis, and C. muridarum, but did not exert any inhibitory effect against C. psittaci, C. pecorum, C. abortus, and C. avium even at 80 µg mL -1 . These data suggest that CMO could be a promising compound in the prevention and treatment of chlamydial infections., (© 2017 Wiley Periodicals, Inc.)

Published
2017
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15. Tetracycline Susceptibility in Chlamydia suis Pig Isolates.

Author

Donati M, Balboni A, Laroucau K, Aaziz R, Vorimore F, Borel N, Morandi F, Vecchio Nepita E, and Di Francesco A

Subjects
Animals, Bacterial Proteins genetics, Chlamydia genetics, Chlamydia isolation & purification, Chlamydia Infections epidemiology, Chlamydia Infections microbiology, DNA, Bacterial genetics, Italy epidemiology, Microbial Sensitivity Tests, RNA, Ribosomal, 23S genetics, Real-Time Polymerase Chain Reaction, Repressor Proteins genetics, Swine, Swine Diseases microbiology, Anti-Bacterial Agents pharmacology, Chlamydia drug effects, Chlamydia Infections veterinary, Swine Diseases epidemiology, Tetracycline pharmacology, Tetracycline Resistance genetics
Abstract

The aims of the present study were to assess the prevalence of Chlamydia suis in an Italian pig herd, determine the tetracycline susceptibility of C. suis isolates, and evaluate tet(C) and tetR(C) gene expression. Conjunctival swabs from 20 pigs were tested for C. suis by real-time polymerase chain reaction, and 55% (11) were positive. C. suis was then isolated from 11 conjunctival swabs resampled from the same herd. All positive samples and isolates were positive for the tet(C) resistance gene. The in vitro susceptibility to tetracycline of the C. suis isolates showed MIC values ranging from 0.5 to 4 μg/mL. Tet(C) and tetR(C) transcripts were found in all the isolates, cultured both in the absence and presence of tetracycline. This contrasts with other Gram-negative bacteria in which both genes are repressed in the absence of the drug. Further investigation into tet gene regulation in C. suis is needed.

Published
2016
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