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2.
Clinical and Experimental Rheumatology ; 40(10):82-83, 2022.
Article in English | EMBASE | ID: covidwho-2067782

ABSTRACT

Objectives. The peripheral lymphocyte compartment of patients with primary Sjogren's syndrome (pSS) differs strongly from healthy individuals. Whether this altered lymphocyte composition also abnormally changes during immune reactions, especially in the context of novel mRNA-vaccines, is unknown. Methods. Peripheral blood samples from 26 pSS patients were compared to 6 healthy controls before Coronavirus-2 (CoV-2) vaccination (BNT162b2, ChAdOx1, mRNA-1273) and 7 days after secondary vaccination. Spike. 1 (S1)-receptor binding domain (RBD)-neutralizing IgG antibodies were measured in serum samples. Within peripheral blood mononuclear cells (PBMC), lymphocytes were characterized using spectral flow cytometry and B and T cell subpopulations were phenotypically analyzed. Results. Immunization induced CoV-2 specific serum antibodies in all pSS and healthy participants. When analyzing pSS and healthy individuals together, frequencies of circulating IgG+ RBD-binding antibody-secreting cells (ASC) and anti-CoV-2 serum titers correlated (r=0.42, p=0.022). Previously described alterations of peripheral B cells in pSS patients (like reduced memory B cells, increased naive and transitional B cells and higher maturity of ASCs) remained stable during vaccination. Also the subset distribution of CD4+ and CD8+ T cells mainly stayed unchanged. However, CD4+CXCR5-PD-1+ T cells phenotypically mimicking peripheral helper TPH cells increased in pSS patients comparing pre- and post-vaccination (p=0.020), while circulating CD4+CXCR5+PD-1+ follicular helper TFH cells declined (p=0.024). Conclusions. An immune reaction induced by vaccination with the novel mRNA technology yields adequate antibody production and vaccine specific lymphocytes in pSS patients and controls. However, no major changes within the typical composition of lymphocyte subpopulations of pSS patients were observed despite small changes in TPH and TFH subsets.

3.
Clinical and Experimental Rheumatology ; 40(10):84, 2022.
Article in English | EMBASE | ID: covidwho-2067776

ABSTRACT

Objectives. To investigate the safety and efficacy of SARS-Cov-2 vaccination in a large international cohort of patients with primary Sjogren syndrome due to scarcity of data in this population. Methods. By the first week of May 2021, all Big Data Sjogren Consortium centers had been contacted and asked for Registry patients to be included in the study if they had received at least one dose of any SARS-CoV-2 vaccine. The in-charge physician asked patients about local and systemic reactogenicity, using a pre-defined electronic questionnaire to collect epidemiologic data, COVID 19 vaccination data, and COVID 19 vaccination side effects. Adverse events were defined as those reported by the patient at the site of injection within 7 days from vaccination (reactogenicity) as local adverse events, systemic symptoms as systemic side effects, and postvaccination AEs of special interest related to SS as SS flares. Results. The vaccination data of 1237 patients (1170 women, with a mean age at diagnosis of primary SjS of 50.5 13.2) were received. A total of 835 patients (67 percent) reported any adverse event, including local (53 percent) and systemic (50 percent) AEs. Subjective symptoms (63%) were the most common local AEs, followed by objective signs at the injection site (16%) and general symptoms were the most commonly reported systemic AEs (46 percent), followed by musculoskeletal (25 percent), gastrointestinal (9 percent), cardiopulmonary (3 percent), and neurological (2 percent). People under 60 years old had a higher risk of developing AE after vaccination (OR 2.48, CI 95 1.89-3.27 percent), as did those with low systemic SS activity (OR 1.62, CI 95 1.22-2.15) and those who received mRNA vaccines, according to a multivariate analysis (OR 1.57, CI 95 percent 1.12- 2.18). The risk of developing systemic AEs was also higher in women (OR 2.85, CI 95 percent 1.60-5.2346), White people (OR 1.73, CI 95 1.14-2.65), and those who received a deficient vaccination regimen (OR 1.78, CI 95 1.12-2.88 percent). In addition to 141 (11%) patients who reported a significant worsening/exacerbation of their pre-vaccination sicca symptoms as a result of post-vaccination SS flares, 15 (1.2%) patients (13 women, mean age at vaccination 41.9 years) reported active involvement in the glandular (n=8), articular (n=7), cutaneous (n=6), pulmonary (n=2), and peripheral nervous system (n=1) domains as post-vaccination systemic flare. All side effects and flares subsided within 1-3 weeks, with no lasting effects or deaths. In terms of vaccination efficacy, breakthrough SARS-CoV-2 infection was confirmed after vaccination in three (0.24 percent) patients, all of whom recovered completely, and positive anti-SARS-Cov-2 antibodies were detected in approximately 95 percent of vaccinated SjS patients, according to data available. Conclusions. SARS-CoV-2 vaccination in patients with primary SjS, like other vaccines with adequate response and no safety signals, raised no concerns about the vaccine's efficacy or safety.

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