Wiktor Schmidt

Dr. Wiktor Schmidt

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Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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12 May 2023 in Rheumatology International
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Journal Article
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KPKatarzyna Pawlak-Buś
Katarzyna Pawlak-Buś
WSWiktor Schmidt
Wiktor Schmidt
DEDudziec Ewa
Dudziec Ewa
LPLeszczyński Piotr
Leszczyński Piotr
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease. Its variable course makes it difficult to standardize patient treatment. This article aims at a literature review on available drugs for treating SLE and on drugs that have shown therapeutic effects in this disease. The PubMed/MEDLINE electronic search engine was used to identify relevant studies. This review presents the current therapeutic options, new biological therapies, and combination therapies of biologics with standard immunosuppressive and immunomodulating drugs. We have also underlined the importance to implement the treat-to-target strategy aimed at reducing or discontinuing therapy with glucocorticosteroids (GCs). The awareness of the benefits and risks of using GCs helps in refining their dosage and thereby obtaining a better safety profile. The advent of biological targeted therapies, and more recently, low-molecular-weight compounds such as kinase inhibitors, initiated numerous clinical trials in SLE patients and led to the approval of two biological drugs, belimumab, and anifrolumab, for SLE treatment. Progress in the treatment of SLE was reflected in the 2019 and 2021 recommendations of the European Alliance of Associations for Rheumatology (EULAR). However, a mass of recent clinical research data requires continuous consolidation to optimize patient outcomes.

5 January 2022 in Annals of Agricultural and Environmental Medicine
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Journal Article
Open access
WSWiktor Schmidt
Wiktor Schmidt
BJBarbara Jóźwiak
Barbara Jóźwiak
ZCZofia Czabajska
Zofia Czabajska
KPKatarzyna Pawlak-Buś
Katarzyna Pawlak-Buś
PLPiotr Leszczynski
Piotr Leszczynski
Introduction and objective: Recognition of patients with COVID-19 who will progress clinically and need respiratory support remains challenging. The aim of the study was to identify abnormalities in on-admission laboratory results that can precede progression from moderate or severe to critical...

19 October 2021 in Journal of Clinical Medicine
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KPKatarzyna Pawlak-Buś
Katarzyna Pawlak-Buś
WSWiktor Schmidt
Wiktor Schmidt
PLPiotr Leszczyński
Piotr Leszczyński
Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease characterized by the production of multiple autoantibodies, resulting in tissue and organ damage. Recent studies have revealed that interleukin-23 (IL-23) and interleukin-27 (IL-27) may be therapeutically relevant in selected SLE manifestations. This study aimed to identify associations between serum IL-27 and IL-23 levels and disease activity in Polish patients with different manifestations of SLE: neuropsychiatric lupus (NPSLE), and lupus nephritis (LN). Associations between interleukin levels and oligo-specific antibodies against double-stranded DNA (dsDNA), dose of glucocorticoids, and type of treatment were also analyzed. An enzyme-linked immunosorbent assay was used to assess anti-dsDNA antibodies and analyze the serum concentration of IL-27 and IL-23 from 72 patients aged 19–74 years with confirmed active SLE. Disease activity was measured using the Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI 2-K). No significant correlations between interleukin levels and SLEDAI score, anti-dsDNA, corticosteroid dose, or type of treatment were noted. Patients with NPSLE and LN presented the highest median scores of SLEDAI.

31 August 2020 in Rheumatology
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Journal Article
Open access
WSWiktor Schmidt
Wiktor Schmidt
MTMałgorzata Tąpolska
Małgorzata Tąpolska
KPKatarzyna Pawlak-Buś
Katarzyna Pawlak-Buś
MOMagdalena Owczarek
Magdalena Owczarek
PLPiotr Leszczyński
Piotr Leszczyński
Objectives: Rheumatoid arthritis (RA) affects patients’ capacity to work. The Rheumatoid Arthritis Work Instability Scale (RA-WIS) is a reliable method to measure work instability (WI) (1–3). We lack data on the relationship between RA and work instability among Polish patients. Our study aimed to assess WI and associated factors among patients with RA.Material and methods: The authors conducted a multi-centre cross-sectional observational study. 315 patients from three rheumatology centres were enrolled and filled in questionnaires, including demographic and self-reported clinical data, RA-WIS, and the Health Assessment Questionnaire (HAQ). Swollen and tender joint counts (SJC, TJC) were assessed by the attending physician, and current erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) were collected. We excluded 41 patients due to an incorrectly filled in form and analysed questionnaires of 274 patients. DAS28 (Disease Activity Score in 28 joints) and DAS28-CRP were calculated. We performed statistical analysis with Statistica v. 13.3 using the Mann-Whitney U test, 2 test, and Spearman’s correlation.Results: 140 (51%) patients were currently employed and their characteristics were analysed. In univariable analysis we identified the following risk factors for high risk WI: moderate-to-high disease activity (DAS28 ≥ 3.2 – OR 2.29, 95% CI 1.06–4.96, p = 0.033; DAS28-CRP ≥ 3.2 – OR 2.34, 95% CI 1.04–5.27, p = 0.038), ESR ≥ 30 mm/h in women and ≥ 20 mm/h in men (OR 2.65, 95% CI 1.20–5.89, p = 0.010), CRP ≥ 1 mg/dl (OR 4.02, 95% CI 1.78–9.10, p < 0.001), HAQ-DI > 1.0 (OR 2.23, 95% CI 1.04–4.81, p = 0.037) and at least moderate pain on the visual analogue scale (VAS p ≥ 4.5 cm – OR 5.31, 95% CI 2.36–11.96, p < 0.001). Correlations were moderate between RA-WIS and VASp (RS = 0.59, p < 0.001) and HAQ-DI (RS = 0.52, p < 0.001) but weak with disease activity indices (DAS28 [RS = 0.31, p < 0.001]; DAS28-CRP [RS = 0.28, p < 0.001]).Conclusions: Pain and disability are the main factors strongly associated with work instability among patients with RA.

22 March 2023 in Journal of Clinical Medicine
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Journal Article
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WSWiktor Schmidt
Wiktor Schmidt
KPKatarzyna Pawlak-Buś
Katarzyna Pawlak-Buś
BJBarbara Jóźwiak
Barbara Jóźwiak
PLPiotr Leszczyński
Piotr Leszczyński
Hyperinflammation in COVID-19 plays a crucial role in pathogenesis and severity; thus, many immunomodulatory agents are applied in its treatment. We aimed to identify good clinical response predictors of tocilizumab (TCZ) treatment in severe COVID-19, among clinical, laboratory, and radiological variables. We conducted a prospective, observational study with 120 patients with severe COVID-19 not improving despite dexamethasone (DEX) treatment. We used parametric and non-parametric statistics, univariate logistic regression, receiver operating characteristic (ROC) curves, and nonlinear factors tertile analysis. In total, 86 (71.7%) patients achieved the primary outcome of a good clinical response to TCZ. We identified forty-nine predictive factors with potential utility in patient selection and treatment monitoring. The strongest included time from symptom onset between 9 and 12 days, less than 70% of estimated radiological lung involvement, and lower activity of lactate dehydrogenase. Additional predictors were associated with respiratory function, vitamin D concentration, comorbidities, and inflammatory/organ damage biomarkers. Adverse events analysis proved the safety of such a regimen. Our study confirmed that using TCZ early in the hyperinflammatory phase, before severe respiratory failure development, is most beneficial. Considering the described predictive factors, employing simple and widely available laboratory, radiological, and clinical tools can optimize patient selection for immunomodulatory treatment with TCZ.

28 May 2025 in Rheumatology
Verified
Journal Article
Open access
JKJulia Kołodziejczyk
Julia Kołodziejczyk
IŁIzabella Ławińska
Izabella Ławińska
WSWiktor Schmidt
Wiktor Schmidt
PLPiotr Leszczyński
Piotr Leszczyński
KPKatarzyna Pawlak-Buś
Katarzyna Pawlak-Buś
Chronic intestinal pseudo-obstruction (CIPO) is an infrequent and menacing complication of systemic sclerosis (Ssc). While researchers report positive impact of rituximab (RTX) on CIPO in paraneoplastic syndrome, no case reports exist for SSc-associated CIPO. The aim of this case-based review is to analyses current literature in context of particular CIPO case description. This analysis was based on PubMed/MEDLINE database and was conducted using the selected key terms. Finally 40 studies/case reports and one case description from authors clinical experience were included into comparison and discussion. As conclusion description of successfuly treatment with RTX and intravenous immunoglobulins can confirm the suggestions from other studies that B-cells participate in the pathogenesis of SSc, making RTX a potentially effective therapeutic option also in coexisting CIPO.