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1.
  • Khalili, A, et al. (författare)
  • Disseminated Intravascular Coagulation Associated with Large Deletion of Immunoglobulin Heavy Chain
  • 2021
  • Ingår i: Iranian journal of allergy, asthma, and immunology. - : Knowledge E. - 1735-5249 .- 1735-1502. ; 20:6, s. 778-783
  • Tidskriftsartikel (refereegranskat)abstract
    • Although the majority of monogenic defects underlying primary immunodeficiency are microlesions, large lesions like large deletions are rare and constitute less than 10% of these patients. The immunoglobulin heavy chain (IGH) locus is one of the common regions for such genetic alterations. This study describes a rare case of autosomal recessive agammaglobulinemia with a homozygous large deletion in chromosome 14q32.33 (106067756-106237742) immunoglobulin heavy chain clusters with an unusual and severe skin infection and disseminated intravascular coagulopathy.
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2.
  • Pashaei, Mehrnoosh, et al. (författare)
  • IL-25 Impact on Malignant B Cells Survival and T Cells Activation in Chronic Lymphocytic Leukemia
  • 2023
  • Ingår i: Iranian Journal Of Allergy, Asthma and Immunology. - : Tehran University of Medical Sciences. - 1735-1502 .- 1735-5249. ; 22:3, s. 299-311
  • Tidskriftsartikel (refereegranskat)abstract
    • T cell dysregulation and shift to T helper 2 responses, boosting tumor microenvironment support, contributes to the survival of leukemic B cells in Chronic Lymphocytic Leukemia. Interleukin (IL)-25 is involved in the initiation of T helper 2 cell responses. Signal transduction of IL-25 begins with the heterodimer receptor (IL-17RA/IL-17RB). The presence of IL-25 in the tumor microenvironment may affect the supportive effects of T cells in the surrounding tumor cell environment. The purpose of this study was to evaluate the role of IL-25 in the biology of CLL. IL-17RB expression in CD3+ and CD19+ cells was assessed in isolated peripheral blood mononuclear cells (PBMCs) of nine CLL patients and nine healthy subjects by real-time polymerase chain reaction and flow cytometry. B cells were positively enriched from PBMCs using magnetic activated cell sorting (MACS). PBMCs and purified leukemic B cells were cultured with recombinant human IL-25 (20ng/ml) for 72 hours, then the viability and apoptosis of cultured cells were measured by MTT assay and AnnexinV/7AAD. Furthermore, the levels of CD69 expression on T lymphocytes and IL-17RB in T and B cells were determined by flow cytometry. The basal level of IL-17RB expression in CLL patients was significantly higher than that in control individuals. In addition, the percentage of IL-17RB+/CD3+, IL-17RB+/CD19+ cells and CD69+/CD3+ cells increased after 72 hours of culture with IL-25 in CLL patients compared to healthy subjects. IL-25 also reduces the apoptosis rate of tumor cells. We found that IL-25 could stimulate T cells in CLL patients and lower B cell death. This suggests that IL-25 might have a role in enhancing the survival of tumor cell by expressing receptors for inflammation, such as IL-17RB, and might be involved in the development of CLL.
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