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Subject: search.filters.subject.Vaccine

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    SARS-CoV-2 vaccination and risk of severe COVID-19 outcomes in patients with autoimmune hepatitis
    (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2022-01-01) Efe, Cumali; Tascilar, Koray; Gerussi, Alessio; Bolis, Francesca; Lammert, Craig; Ebik, Berat; Stattermayer, Albert Friedrich; Cengiz, Mustafa; Gokce, Dilara Turan; Cristoferi, Laura; Peralta, Mirta; Massoumi, Hatef; Montes, Pedro; Cerda, Eira; Rigamonti, Cristina; Yapali, Suna; Adali, Gupse; Caliskan, Ali Riza; Balaban, Yasemin; Eren, Fatih; Eskazan, Tugce; Barutcu, Sezgin; Lytvyak, Ellina; Zazueta, Godolfino Miranda; Kayhan, Meral Akdogan; Heurgue-Berlot, Alexandra; De Martin, Eleonora; Yavuz, Ahmet; Biyik, Murat; Narro, Graciela Castro; Duman, Serkan; Hernandez, Nelia; Gatselis, Nikolaos K.; Aguirre, Jonathan; Idilman, Ramazan; Silva, Marcelo; Mendizabal, Manuel; Atay, Kadri; Guzelbulut, Fatih; Dhanasekaran, Renumathy; Montano-Loza, Aldo J.; Dalekos, George N.; Ridruejo, Ezequiel; Invernizzi, Pietro; Wahlin, Staffan
    Background: Data regarding outcome of Coronavirus disease 2019 (COVID-19) in vaccinated patients with autoimmune hepatitis (AIH) are lacking. We evaluated the outcome of COVID-19 in AIH patients who received at least one dose of Pfizer- BioNTech (BNT162b2), Moderna (mRNA-1273) or AstraZeneca (ChAdOx1-S) vaccine. Patients and methods: We performed a retrospective study on AIH patients with COVID-19. The outcomes of AIH patients who had acute respiratory syndrome coronavirus 2 (SARS-CoV-2) breakthrough infection after at least one dose of COVID-19 vaccine were compared to unvaccinated patients with AIH. COVID-19 outcome was classified according to clinical state during the disease course as: (i) no hospitalization, (ii) hospitalization without oxygen supplementation, (iii) hospitalization with oxygen supplementation by nasal cannula or mask, (iv) intensive care unit (ICU) admission with non-invasive mechanical ventilation, (v) ICU admission with invasive mechanical ventilation or (vi) death, and data was analyzed using ordinal logistic regression. Results: We included 413 (258 unvaccinated and 155 vaccinated) patients (81\%, female) with a median age of 52 (range: 17-85) years at COVID-19 diagnosis. The rates of hospitalization were (36.4\% vs. 14.2\%), need for any supplemental oxygen (29.5\% vs. 9\%) and mortality (7\% vs. 0.6\%) in unvaccinated and vaccinated AIH patients with COVID-19. Having received at least one dose of SARS-CoV-2 vaccine was associated with a significantly lower risk of worse COVID-19 severity, after adjusting for age, sex, comorbidities and presence of cirrhosis (adjusted odds ratio {[}aOR] 0.18, 95\% confidence interval {[}CI], 0.10-0.31). Overall, vaccination against SARSCoV-2 was associated with a significantly lower risk of mortality from COVID-19 (aOR 0.20, 95\% CI 0.11-0.35). Conclusions: SARS-CoV-2 vaccination significantly reduced the risk of COVID-19 severity and mortality in patients with AIH.
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    Polymeric Approach to Adjuvant System in Antibody Production against Leishmaniasis Based on Hybridoma Technology
    (IRANIAN SCIENTIFIC SOCIETY MEDICAL ENTOMOLOGY, 2022-01-01) Yildiz, Asli Pinar Zorba; Koken, Gulnaz Yildirim; Abamor, Emrah Sefik; Bagirova, Melahat; Tosyali, Ozlem Ayse; Kocagoz, Tanil; Allahverdiyev, Adil
    Background: Leishmaniasis is a zoonotic disease, which is one of the serious public health problems in the world. Nowadays, antibody production using hybridoma technology may be a correct approach in terms of sensitivity in the diagnosis of diseases such as leishmaniasis. The aim of this study was investigation of the effectiveness of different adjuvants on polyclonal antibody production against L. tropica based on hybridoma technique.Methods: Accordingly, Freund's adjuvant (1956, M. tuberculosis), as a classic adjuvant in studies, was used comparatively with the non-toxic polymeric based Polyoxidonium adjuvant. All animal immunization procedures were conducted at Bezm-i Alem University Experimental Animal Research Center. The adjuvant response was tested both in the serum sample and in the antibodies produced by the hybridomas. The antibody titers were determined with ELISA.Results: Freund's and Polyoxidonium (PO) group blood titer's increased approximately 5.5 fold compared to control after the 6(th) and 8(th) immunization. Hybridomas produced from mice immunized with PO adjuvant induced only antigen-specific antibody response and did not develop an immune response against the adjuvant.Conclusion: Adjuvant selection is very important in terms of the specificity of antibody responses of cells produced in hybridoma technology. Therefore, PO is recommended as a new adjuvant system in this study.