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Your search keyword '"Pollara, Gabriele"' showing total 19 results
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19 results on '"Pollara, Gabriele"'

2. Genomic investigations of unexplained acute hepatitis in children

Author

Morfopoulou, Sofia, Buddle, Sarah, Torres Montaguth, Oscar Enrique, Atkinson, Laura, Guerra-Assunção, José Afonso, Moradi Marjaneh, Mahdi, Zennezini Chiozzi, Riccardo, Storey, Nathaniel, Campos, Luis, Hutchinson, J. Ciaran, Counsell, John R., Pollara, Gabriele, Roy, Sunando, Venturini, Cristina, Antinao Diaz, Juan F., Siam, Ala’a, Tappouni, Luke J., Asgarian, Zeinab, Ng, Joanne, Hanlon, Killian S., Lennon, Alexander, McArdle, Andrew, Czap, Agata, Rosenheim, Joshua, Andrade, Catarina, Anderson, Glenn, Lee, Jack C. D., Williams, Rachel, Williams, Charlotte A., Tutill, Helena, Bayzid, Nadua, Martin Bernal, Luz Marina, Macpherson, Hannah, Montgomery, Kylie-Ann, Moore, Catherine, Templeton, Kate, Neill, Claire, Holden, Matt, Gunson, Rory, Shepherd, Samantha J., Shah, Priyen, Cooray, Samantha, Voice, Marie, Steele, Michael, Fink, Colin, Whittaker, Thomas E., Santilli, Giorgia, Gissen, Paul, Kaufer, Benedikt B., Reich, Jana, Andreani, Julien, Simmonds, Peter, Alrabiah, Dimah K., Castellano, Sergi, Chikowore, Primrose, Odam, Miranda, Rampling, Tommy, Houlihan, Catherine, Hoschler, Katja, Talts, Tiina, Celma, Cristina, Gonzalez, Suam, Gallagher, Eileen, Simmons, Ruth, Watson, Conall, Mandal, Sema, Zambon, Maria, Chand, Meera, Hatcher, James, De, Surjo, Baillie, Kenneth, Semple, Malcolm Gracie, Martin, Joanne, Ushiro-Lumb, Ines, Noursadeghi, Mahdad, Deheragoda, Maesha, Hadzic, Nedim, Grammatikopoulos, Tassos, Brown, Rachel, Kelgeri, Chayarani, Thalassinos, Konstantinos, Waddington, Simon N., Jacques, Thomas S., Thomson, Emma, Levin, Michael, Brown, Julianne R., and Breuer, Judith

Published
2023
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3. Rapid synchronous type 1 IFN and virus-specific T cell responses characterize first wave non-severe SARS-CoV-2 infections

Author

Chandran, Aneesh, Rosenheim, Joshua, Nageswaran, Gayathri, Swadling, Leo, Pollara, Gabriele, Gupta, Rishi K., Burton, Alice R., Guerra-Assunção, José Afonso, Woolston, Annemarie, Ronel, Tahel, Pade, Corinna, Gibbons, Joseph M., Sanz-Magallon Duque De Estrada, Blanca, Robert de Massy, Marc, Whelan, Matthew, Semper, Amanda, Brooks, Tim, Altmann, Daniel M., Boyton, Rosemary J., McKnight, Áine, Captur, Gabriella, Manisty, Charlotte, Treibel, Thomas Alexander, Moon, James C., Tomlinson, Gillian S., Maini, Mala K., Chain, Benjamin M., and Noursadeghi, Mahdad

Published
2022
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4. The CSF transcriptome in pneumococcal meningitis reveals compartmentalised host inflammatory responses associated with mortality.

Author

Guerra-Assuncao, Jose-Afonso, primary, Chakroborty, Probir, additional, Pollara, Gabriele, additional, Venturini, Cristina, additional, Mlozowa, Veronica S, additional, Denis, Brigitte, additional, Nyirenda, Mulinda, additional, Lalloo, David G, additional, Noursadeghi, Mahad, additional, Heyderman, Robert S, additional, Brown, Jeremy S, additional, and Wall, Emma C, additional

Published
2024
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11. Dysfunctional effector memory CD8 T cells in the bronchoalveolar compartment of people living with HIV

Author

Mthembu, Maphe, primary, Claassen, Helgard, additional, Khuzwayo, Sharon, additional, Voillet, Valentin, additional, Naidoo, Anneta, additional, Nyamande, Kennedy, additional, Khan, Dilshaad F., additional, Maharaj, Priya, additional, Mitha, Mohammed, additional, Mhlane, Zoey, additional, Karim, Farina, additional, Andersen-Nissen, Erica, additional, Ndung’u, Thumbi, additional, Pollara, Gabriele, additional, and Wong, Emily B., additional

Published
2023
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13. Genomic investigations of unexplained acute hepatitis in children

Author

Morfopoulou, Sofia; https://orcid.org/0000-0001-8181-4548, Buddle, Sarah; https://orcid.org/0000-0002-4738-9469, Montaguth, Oscar Enrique Torres, Atkinson, Laura, Guerra-Assunção, José Afonso; https://orcid.org/0000-0001-6593-403X, Marjaneh, Mahdi Moradi; https://orcid.org/0000-0002-9412-9029, Chiozzi, Riccardo Zenezini, Storey, Nathaniel; https://orcid.org/0000-0001-5942-4674, Campos, Luis; https://orcid.org/0000-0002-4317-0013, Hutchinson, J Ciaran, Counsell, John R; https://orcid.org/0000-0001-9208-101X, Pollara, Gabriele; https://orcid.org/0000-0001-5772-0322, Roy, Sunando, Venturini, Cristina, Antinao Diaz, Juan F, Siam, Ala'a, Tappouni, Luke J; https://orcid.org/0000-0003-2397-0512, Asgarian, Zeinab, Ng, Joanne, Hanlon, Killian S, Lennon, Alexander; https://orcid.org/0000-0002-3363-0637, McArdle, Andrew; https://orcid.org/0000-0001-7448-0869, Czap, Agata, Rosenheim, Joshua; https://orcid.org/0000-0003-0171-2053, Andrade, Catarina, Anderson, Glenn, Lee, Jack C D; https://orcid.org/0000-0002-9866-2808, Williams, Rachel, Williams, Charlotte A, Tutill, Helena; https://orcid.org/0000-0002-9977-9012, et al, Morfopoulou, Sofia; https://orcid.org/0000-0001-8181-4548, Buddle, Sarah; https://orcid.org/0000-0002-4738-9469, Montaguth, Oscar Enrique Torres, Atkinson, Laura, Guerra-Assunção, José Afonso; https://orcid.org/0000-0001-6593-403X, Marjaneh, Mahdi Moradi; https://orcid.org/0000-0002-9412-9029, Chiozzi, Riccardo Zenezini, Storey, Nathaniel; https://orcid.org/0000-0001-5942-4674, Campos, Luis; https://orcid.org/0000-0002-4317-0013, Hutchinson, J Ciaran, Counsell, John R; https://orcid.org/0000-0001-9208-101X, Pollara, Gabriele; https://orcid.org/0000-0001-5772-0322, Roy, Sunando, Venturini, Cristina, Antinao Diaz, Juan F, Siam, Ala'a, Tappouni, Luke J; https://orcid.org/0000-0003-2397-0512, Asgarian, Zeinab, Ng, Joanne, Hanlon, Killian S, Lennon, Alexander; https://orcid.org/0000-0002-3363-0637, McArdle, Andrew; https://orcid.org/0000-0001-7448-0869, Czap, Agata, Rosenheim, Joshua; https://orcid.org/0000-0003-0171-2053, Andrade, Catarina, Anderson, Glenn, Lee, Jack C D; https://orcid.org/0000-0002-9866-2808, Williams, Rachel, Williams, Charlotte A, Tutill, Helena; https://orcid.org/0000-0002-9977-9012, and et al

Abstract

Since its first identification in Scotland, over 1000 cases of unexplained pediatric hepatitis in children have been reported worldwide, including 278 cases in the UK. Here we report investigation of 38 cases, 66 age-matched immunocompetent controls and 21 immunocompromised comparator subjects, using a combination of genomic, transcriptomic, proteomic and immunohistochemical methods. We detected high levels of adeno-associated virus 2 (AAV2) DNA in liver, blood, plasma or stool from 27/28 cases. We found low levels of Adenovirus (HAdV) and Human Herpesvirus 6B (HHV-6B), in 23/31 and 16/23 respectively of the cases tested. In contrast, AAV2 was infrequently detected at low titre in blood or liver from control children with HAdV, even when profoundly immunosuppressed. AAV2, HAdV and HHV-6 phylogeny excluded emergence of novel strains in cases. Histological analyses of explanted livers showed enrichment for T-cells and B-lineage cells. Proteomic comparison of liver tissue from cases and healthy controls, identified increased expression of HLA class 2, immunoglobulin variable regions and complement proteins. HAdV and AAV2 proteins were not detected in the livers. Instead, we identified AAV2 DNA complexes reflecting both HAdV and HHV-6B-mediated replication. We hypothesize that high levels of abnormal AAV2 replication products aided by HAdV and in severe cases HHV-6B, may have triggered immune-mediated hepatic disease in genetically and immunologically predisposed children.

Published
2023

14. Altered IL-6 signalling and risk of tuberculosis disease: a meta-analysis and Mendelian randomisation study

Author

Hamilton, Fergus, Schurz, Haiko, Yates, Tom A., Gilchrist, James J., Möller, Marlo, Naranbhai, Vivek, Ghazal, Peter, Timpson, Nicholas J, Parks, Tom, and Pollara, Gabriele

Subjects
Article
Abstract

SummaryIL-6 responses are ubiquitous inMycobacterium tuberculosis (Mtb)infections, but their role in determining human tuberculosis (TB) disease risk is unknown. We used single nucleotide polymorphisms (SNPs) in and near the IL-6 receptor(IL6R)gene, focusing on the non-synonymous variant, rs2228145, associated with reduced classical IL-6 signalling, to assess the effect of altered IL-6 activity on TB disease risk. We identified 16 genome wide association studies (GWAS) of TB disease collating 17,982 cases of TB disease and 972,389 controls across 4 continents. Meta-analyses and Mendelian randomisation analyses revealed that reduced classical IL-6 signalling was associated with lower odds of TB disease, a finding replicated using multiple, independent SNP instruments and 2 separate exposure variables. Our findings establish a causal relationship between IL-6 signalling and the outcome ofMtbinfection, suggesting IL-6 antagonists do not increase the risk of TB disease and should be investigated as adjuncts in treatment.

Published
2023

18. Dysfunctional effector memory CD8 T cells in the bronchoalveolar compartment of people living with HIV.

Author

Mthembu M, Claassen H, Khuzwayo S, Voillet V, Naidoo A, Nyamande K, Khan DF, Maharaj P, Mitha M, Mhlane Z, Karim F, Andersen-Nissen E, Ndung'u T, Pollara G, and Wong EB

Abstract

Mechanisms by which HIV causes susceptibility to respiratory pathogens remain incompletely understood. We obtained whole blood and bronchoalveolar lavage (BAL) from people with latent TB infection in the presence or absence of antiretroviral-naïve HIV co-infection. Transcriptomic and flow cytometric analyses demonstrated HIV-associated cell proliferation plus type I interferon activity in blood and effector memory CD8 T-cells in BAL. Both compartments displayed reduced induction of CD8 T-cell-derived IL-17A in people with HIV, associated with elevated T-cell regulatory molecule expression. The data suggest that dysfunctional CD8 T-cell responses in uncontrolled HIV contribute to susceptibility to secondary bacterial infections, including tuberculosis.

Published
2023
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19. Altered IL-6 signalling and risk of tuberculosis disease: a meta-analysis and Mendelian randomisation study.

Author

Hamilton F, Schurz H, Yates TA, Gilchrist JJ, Möller M, Naranbhai V, Ghazal P, Timpson NJ, Parks T, and Pollara G

Abstract

IL-6 responses are ubiquitous in Mycobacterium tuberculosis ( Mtb ) infections, but their role in determining human tuberculosis (TB) disease risk is unknown. We used single nucleotide polymorphisms (SNPs) in and near the IL-6 receptor ( IL6R ) gene, focusing on the non-synonymous variant, rs2228145, associated with reduced classical IL-6 signalling, to assess the effect of altered IL-6 activity on TB disease risk. We identified 16 genome wide association studies (GWAS) of TB disease collating 17,982 cases of TB disease and 972,389 controls across 4 continents. Meta-analyses and Mendelian randomisation analyses revealed that reduced classical IL-6 signalling was associated with lower odds of TB disease, a finding replicated using multiple, independent SNP instruments and 2 separate exposure variables. Our findings establish a causal relationship between IL-6 signalling and the outcome of Mtb infection, suggesting IL-6 antagonists do not increase the risk of TB disease and should be investigated as adjuncts in treatment.

Published
2023
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