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First report of expansion of CD4+/CD28 null T-helper lymphocytes in adult patients with idiopathic autoimmune hemolytic anemia
Youssef, Soha R; Elsalakawy, Walaa A.
  • Youssef, Soha R; Ain Shams University. Departments of Clinical Pathology. faculty of medicine. Cairo. EG
  • Elsalakawy, Walaa A; Ain Shams University. Departments of Clinical Pathology. faculty of medicine. Cairo. EG
Hematol., Transfus. Cell Ther. (Impr.) ; 43(4): 396-401, Oct.-Dec. 2021. tab, graf
Article in English | LILACS | ID: biblio-1350809
ABSTRACT
ABSTRACT CD28 null T helper (Th) cells are rare in healthy individuals, but they are increased in various inflammatory and immune-mediated diseases. In this study, we determined the size of the CD4+/CD28 null T lymphocyte compartment in the peripheral blood of 40 autoimmune hemolytic anemia (AIHA) patients (idiopathic and secondary) and 20 healthy control subjects, using tri-color flow cytometry. The frequency and absolute count of CD4+/CD28 null T helper (Th) cells was significantly higher in idiopathic AIHA patients, compared to healthy controls (p = 0.001 and 0.001, respectively) and to patients with secondary AIHA (p = 0.04 and 0.01, respectively). The percentage of CD4+/CD28 null Th cells was also negatively correlated to the hemoglobin (Hb) level (p = 0.03). These findings demonstrate, for the first time, the expansion of this phenotypically-defined population of T lymphocytes in patients with idiopathic AIHA and indicate that it likely plays an etiological role in the development of this disease. However, establishing the use of this marker for diagnosis or monitoring treatment of such patients needs further studies.
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Full text: Available Index: LILACS (Americas) Main subject: T-Lymphocytes, Helper-Inducer / Anemia, Hemolytic, Autoimmune Limits: Adolescent / Adult / Female / Humans / Male Language: English Journal: Hematol., Transfus. Cell Ther. (Impr.) Journal subject: Hematologia / TransfusÆo de Sangue Year: 2021 Type: Article Affiliation country: Egypt Institution/Affiliation country: Ain Shams University/EG

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Full text: Available Index: LILACS (Americas) Main subject: T-Lymphocytes, Helper-Inducer / Anemia, Hemolytic, Autoimmune Limits: Adolescent / Adult / Female / Humans / Male Language: English Journal: Hematol., Transfus. Cell Ther. (Impr.) Journal subject: Hematologia / TransfusÆo de Sangue Year: 2021 Type: Article Affiliation country: Egypt Institution/Affiliation country: Ain Shams University/EG