ArticleClinical and experimental pediatrics2023
Changes and correlations of T-cell coinhibitory molecule programmed death-1 and interferon-γ in pediatric immune thrombocytopenia.
Article in Clinical and experimental pediatrics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 3 citations in OpenAlex.
- Correlation between the CD8Frontiers in pediatrics · 2026Article
- Distribution and clinical significance of peripheral blood lymphocyte PD-1 and PD-L1 in non-Hodgkin lymphoma: a retrospective study in Chinese patients.Frontiers in oncology · 2026Article
- Identification of metabolism-related key genes as potential biomarkers for pathogenesis of immune thrombocytopenia.Scientific reports · 2024Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundImmune thrombocytopenia (ITP) is an acquired autoimmune disease characterized by abnormalities of T cells subsets. Programmed death-1 (PD-1) is a co-signaling inhibitory molecule in T cells that is involved in many autoimmune diseases. PURPOSE: Here we aimed to measure changes in PD-1 expression and serum interferon-γ (IFN-γ) levels before and 1 month after treatment in pediatric patients with newly diagnosed ITP.
methodsWe measured PD-1+ CD4+ T cells percentages using flow cytometry and the serum IFN-γ levels by enzyme-linked immunosorbent assay in 40 pediatric patients with ITP and 20 healthy controls.
resultsCompared with healthy controls, the PD-1+ CD4+ T cells percentages and serum IFN-γ levels were significantly higher in ITP patients before and 1 month after therapy. A correlation study revealed that PD-1+ CD4+ T cells percentage was negatively associated with platelet count and positively associated with IFN-γ level in patients with ITP. Furthermore, serum IFN-γ levels were significantly decreased in patients after treatment, but no significant change was detected in the percentage of PD-1+ CD4+ T cells before or 1 month after therapy.
conclusionPD-1+ CD4+ T cells expression and IFN-γ levels were increased in patients with ITP. These preliminary data suggest a potential role of PD-1+ CD4+ T cells as mediators of ITP. We also found a correlation between PD-1+ CD4+ T cells and both platelet counts and IFN-γ levels. These findings suggest a potential role of PD-1+ CD4+ T cells and IFN-γ in the pathogenesis of ITP. Further studies investigating PD-1 expression in different T-cell subsets, serum IFN-γ concentrations, and antiplatelet antibodies levels over a longer duration after therapy initiation could delineate the precise role of PD-1 in ITP pathogenesis. Consequently, novel nontraditional therapeutic strategies for ITP patients may become available.
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