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- Hoff, Leonardo Santos, et al.
(författare)
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COVID-19 severity and vaccine breakthrough infections in idiopathic inflammatory myopathies, other systemic autoimmune and inflammatory diseases, and healthy controls : a multicenter cross-sectional study from the COVID-19 Vaccination in Autoimmune Diseases (COVAD) survey
- 2023
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Ingår i: Rheumatology International. - : Springer. - 0172-8172 .- 1437-160X. ; 43:1, s. 47-58
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: We aimed to compare the spectrum and severity of COVID-19 and vaccine breakthrough infections (BIs) among patients with IIMs, other systemic autoimmune and inflammatory diseases (SAIDs), and healthy controls (HCs).METHODS: This is a cross-sectional study with data from the COVAD study, a self-reported online global survey that collected demographics, COVID-19 history, and vaccination details from April to September 2021. Adult patients with at least one COVID-19 vaccine dose were included. BIs were defined as infections occurring > 2 weeks after any dose of vaccine. Characteristics associated with BI were analyzed with a multivariate regression analysis.RESULTS: Among 10,900 respondents [42 (30-55) years, 74%-females, 45%-Caucasians] HCs were (47%), SAIDs (42%) and IIMs (11%). Patients with IIMs reported fewer COVID-19 cases before vaccination (6.2%-IIM vs 10.5%-SAIDs vs 14.6%-HC; OR = 0.6, 95% CI 0.4-0.8, and OR = 0.3, 95% CI 0.2-0.5, respectively). BIs were uncommon (1.4%-IIM; 1.9%-SAIDs; 3.2%-HC) and occurred in 17 IIM patients, 13 of whom were on immunosuppressants, and 3(18%) required hospitalization. All-cause hospitalization was higher in patients with IIM compared to HCs [23 (30%) vs 59 (8%), OR = 2.5, 95% CI 1.2-5.1 before vaccination, and 3 (18%) vs 9 (5%), OR = 2.6, 95% CI 1.3-5.3 in BI]. In a multivariate regression analysis, age 30-60 years was associated with a lower odds of BI (OR = 0.7, 95% CI 0.5-1.0), while the use of immunosuppressants had a higher odds of BI (OR = 1.6, 95% CI 1.1-2.7).CONCLUSIONS: Patients with IIMs reported fewer COVID-19 cases than HCs and other SAIDs, but had higher odds of all-cause hospitalization from COVID-19 than HCs. BIs were associated with the use of immunosuppressants and were uncommon in IIMs.
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| 3. |
- Labet, Vanessa, et al.
(författare)
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UV-induced formation of the thymine–thymine pyrimidine (6-4) pyrimidone photoproduct – a DFT study of the oxetane intermediate ring opening.
- 2013
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Ingår i: Photochemical and Photobiological Sciences. - : Springer Science and Business Media LLC. - 1474-905X .- 1474-9092. ; 12:8, s. 1509-1516
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Tidskriftsartikel (refereegranskat)abstract
- The mechanism by which the hypothetical oxetane/azetidine intermediate formed during the photochemical process leading to pyrimidine (6-4) pyrimidone photoproducts when DNA is submitted to UV radiation opens is investigated computationally by DFT using a 5’-TT-3’ dinucleoside monophosphate as a structural model. First, the feasibility of an intramolecular mechanism involving one proton transfer inducing opening of the oxetane ring is examined. It results in a very high Gibbs energy of activation (+166 kJ mol−1) and quite a low Gibbs energy of reaction (−35 kJ mol−1). The protonation state of the phosphate group is shown to have little effect while the bulk effect of an aqueous environment modeled by the Polarizable Continuum Model method lowers slightly the activation barrier (by about 10–20 kJ mol−1), not enough to explain the fact that the oxetane intermediate is not observed experimentally. Then the catalytic effect of water molecules on the reaction pathway is studied by including either 1 or 2 assisting water molecules in the chemical system. The resulting activation barrier is considerably lowered and in the most favorable situation – a phosphate group deprotonated and 2 assisting water molecules – the Gibbs energy activation is as low as +44 kJ mol−1 and the Gibbs energy of reaction is quite favorable: −79 kJ mol−1, suggesting that in biological systems the oxetane ring opening process proceeds with explicit intervention of water molecules from the environment.
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| 4. |
- R., Naveen, et al.
(författare)
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Safety and tolerance of vaccines against SARS-CoV-2 infection in systemic lupus erythematosus : results from the COVAD study
- 2023
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Ingår i: Rheumatology. - : Oxford University Press. - 1462-0324 .- 1462-0332. ; 62:7, s. 2453-2463
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To determine COVID-19 vaccine-related adverse events (AEs) in the seven-day post-vaccination period in patients with SLE versus autoimmune rheumatic diseases (AIRDs), non-rheumatic autoimmune diseases (nrAIDs), and healthy controls (HC).METHODS: Data were captured through the COVID-19 Vaccination in Autoimmune Diseases (COVAD) questionnaire (March-December 2021). Multivariable regression models accounted for age, gender, ethnicity, vaccine type, and background treatment.RESULTS: Among 9462 complete respondents, 583 (6.2%) were SLE patients (mean age: 40.1 years; 94.5% females; 40.5% Asian; 42.9% Pfizer-recipients). Minor AEs were reported by 83.0% of SLE patients, major by 2.6%, hospitalisation by 0.2%.AE and hospitalisation frequencies were similar between patients with active and inactive SLE. Rashes were more frequent in SLE patients versus HC (OR; 95% CI: 1.2; 1.0-1.5), chills less frequent in SLE versus AIRDs (0.6; 0.4-0.8) and nrAIDs (0.5; 0.3-0.8), and fatigue less frequent in SLE versus nrAIDs (0.6; 0.4-0.9). Pfizer-recipients reported higher overall AE (2.2; 1.1-4.2) and injection site pain (2.9; 1.6-5.0) frequencies than recipients of other vaccines, Oxford/AstraZeneca-recipients more body ache, fever, chills (OR: 2.5-3.0), Moderna-recipients more body ache, fever, chills, rashes (OR: 2.6-4.3). Hospitalisation frequencies were similar across vaccine types. AE frequencies were similar across treatment groups, although chills were less frequent in antimalarial users versus non-users (0.5; 0.3-0.9).CONCLUSION: While COVID-19 vaccination-related AEs were reported by four-fifths of SLE patients, those were mostly minor and comparable to AEs reported by healthy individuals, providing reassurance regarding COVID-19 vaccination safety in SLE.
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| 5. |
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- 2019
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Tidskriftsartikel (refereegranskat)
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