Publications by authors named "Aristitsa Kostinova"

Article Synopsis
  • The study investigates how one or two doses of inactivated adjuvanted influenza vaccines affect immune responses, specifically focusing on the expression of endosomal Toll-like receptors (TLRs) in patients with common variable immunodeficiency (CVID).
  • Six CVID patients received one vaccine dose followed by nine patients who received two doses; flow cytometry was used to analyze immune cell populations and TLR expression.
  • Findings show that while key lymphocyte populations remained stable post-vaccination, patients receiving two doses exhibited increased TLR3 and TLR9 expression, indicating that two-dose vaccine regimens may enhance immune responses in CVID patients.
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Article Synopsis
  • Mucosal immunity, particularly through secretory immunoglobulin A (sIgA), is crucial for preventing and influencing COVID-19 outcomes.
  • A study involving 69 moderate COVID-19 patients compared the effects of a bacteria-based immunostimulant, Immunovac VP4, with standard therapy on sIgA levels and disease progression.
  • Results showed that using Immunovac VP4 led to higher sIgA production, reduced C-reactive protein (CRP) levels, shorter fever duration, and decreased hospitalization compared to the control group.
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Measles has not yet been eradicated; therefore, its outbreaks are still reported throughout the world. Like any infection, measles is dangerous for immunocompromised patients. Levels of anti-measles IgG antibodies were measured in 157 patients aged 17 to 72, who were placed on the lung transplant waiting list.

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Background: for the first time, the effect of one and two doses of adjuvanted influenza vaccines on toll-like receptors (TLRs) in patients with common variable immunodeficiency (CVID) was studied and compared (primary vaccination with one vs. two doses, primary vs. repeated vaccination).

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Background: Studies aimed at identifying the mechanisms of the immunoregulatory effect of vaccination with diphtheria and tetanus toxoid on the parameters of adaptive immunity in children with kidney pathology are limited. The study aimed to study the effect of revaccination against diphtheria and tetanus on the proliferation and differentiation of immunocompetent cells, the formation of specific antibodies, and the course of the disease in children with glomerulonephritis (GN).

Methods: The study included 45 children with glomerulonephritis (GN) aged 5 to 15 years, in remission from 6 months up to 4 years.

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Background: Influenza prophylaxis with the use of quadrivalent vaccines (QIV) is increasingly being introduced into healthcare practice.

Methods: In total, 32 healthy adults and 6 patients with common variable immunodeficiency (CVID) received adjuvant QIV during 2018-2019 influenza season. Depending on initial antibody titers, healthy volunteers were divided into seronegative (≤1:20) and seropositive (≥1:40).

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Recent addition to vaccines of adjuvants has been actively used to enhance the immunogenicity. However, the use of adjuvants for the development of quadrivalent inactivated influenza vaccines (QIV) is currently limited. The aim of this study was to examine immunogenicity of adjuvanted QIV in healthy people and patients with primary immune deficiency-common variable immune deficiency (CVID).

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In the last decade, adjuvant-containing vaccines, exerting different effects on the immune system, including the production of cytokines, which are one of the most important regulatory systems of the body, are introduced into practice. An effect of the immunoadjuvant polymer-subunit and adjuvant-free vaccines against influenza on the cytokine profile of mononuclear leukocytes in 27 healthy women was studied. The study of cytokine profile in human peripheral blood mononuclear leukocytes exposed to vaccines against influenza virus was determined by flow cytometry method (Cytomix FC-500, Beckman Coulter, USA) using the Multiplex-13 test system (Bender MedSystems, Austria).

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Pregnant women are risk group for influenza infection. Results of new subunit vaccines application have not been studied enough. Prospective, randomized, open-label comparative study of subunit (Agrippal) and polymeric subunit (Grippol plus) vaccines.

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Pregnancy is a condition of modulated immune suppression, so this group of patients has increased risk of infectious diseases. Trivalent subunit vaccines, unadjusted Agrippal S1 (group I) and immunoadjuvant Grippol Plus (group II), containing 5 μg of actual influenza virus strains, were administered respectively to 37 and 42 women in the second and third trimester of physiological pregnancy. The administration of subunit influenza vaccines was accompanied by the development of local reactions in no more than 10% of patients, compared with 4.

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