Publications by authors named "Samar Samoud"

Article Synopsis
  • Schizophrenia (SZ) may have an autoimmune aspect, as indicated by higher levels of antiphospholipid antibodies in patients compared to healthy individuals.
  • * The study analyzed serum samples from 80 drug-free SZ patients and 80 matched controls, finding significantly elevated aCL-IgM, aCL-IgA, and aβ2GPI-IgA levels in SZ patients.
  • * These findings suggest a potential autoimmune link in SZ, warranting further research into the role of these antibodies in the disease's development and their connection to antiphospholipid syndrome.
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Introduction: Post-COVID syndrome (PCS) is characterized by a polymorphism of symptoms with hypothetical pathophysiological mechanisms. Here, we aimed to analyze the profile of inflammatory cytokines in patients with PCS and to study the relationship between this profile, the clinical symptoms as well as the endothelial function in PCS.

Methods: Our analytical study involved all eligible patients (n = 66) with PCS included from April 2021 to December 2021.

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Background: Allogeneic hematopoietic stem cell transplantation (ASCT) induces acquired immunodeficiency, potentially altering vaccine response. Herein, we aimed to explore the clinical tolerance and the humoral and cellular immune responses following anti-SARS-CoV-2 vaccination in ASCT recipients.

Methods: A prospective, non-randomized, controlled study that involved 43 ASCT subjects and 31 healthy controls.

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(1) Background: This study aimed to compare the immunogenicity of the mix-and-match CoronaVac/BNT162b2 vaccination to the homologous CoronaVac/CoronaVac regimen. (2) Methods: We conducted a simple-blinded randomized superiority trial to measure SARS-CoV-2 neutralization antibodies and anti-spike receptor binding domain (RBD) IgG concentrations in blood samples of participants who had received the first dose of CoronaVac vaccine followed by a dose of BNT162b2 or CoronaVac vaccine. The primary endpoint for immunogenicity was the serum-neutralizing antibody level with a percentage of inhibition at 90% at 21-35 days after the boost.

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Hypotheses regarding an immune-cytokine basis of schizophrenia have been postulated with controversial findings and a lack of data related to many cytokines. The aim of this study was to assess serum levels of Interferon-γ (IFN-γ), Interleukin-4 (IL-4), Transforming Growth Factor-β (TGF-β), Interleukin-17 (IL-17) and B-cell Activating Factor (BAFF) in schizophrenic patients and to determine correlations between cytokine levels and clinical parameters. Serum cytokine levels were measured with ELISA techniques in 60 neuroleptic-free patients on acute phase of the disease (BPRS≥40) and 28 healthy controls matched for age and sex.

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Many studies have reported an association between Herpes family viruses and an increased risk of schizophrenia, but the role of Human Herpesvirus 8 (HHV8) has never been investigated. This study aimed to assess HHV8 prevalence in schizophrenic patients as well as the possible association between HHV8 infection and schizophrenia clinical features. We consecutively enrolled 108 patients meeting fourth edition of Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) criteria of schizophrenia and 108 age and sex matched controls.

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Objective: This study was designed to review the effect of chronic aluminium exposure on interleukin-6 (IL-6) secretion in the posterior brain and test the putative modulating effect of fenugreek seeds.

Methods: Female Wistar rats were divided into four groups: control; AlCl3 during 5 months (500 mg/kg body weight, intragastric for 1 month then 1600 ppm via the drinking water); AlCl3 plus fenugreek seed powder (FSP) (5%) during the last 2 months and FSP alone.

Results: Oral administration of aluminium chloride during 5 months caused hypoproduction of IL-6 together with a decrease in GFAP reactivity and an alteration of antioxidant status in the posterior brain.

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