ABSTRACT T-cell prolymphocytic leukemia is a rare and aggressive mature T-cell malignancy that usually presents with marked lymphocytosis, hepatosplenomegaly, lymphadenopathy, and B symptoms. However, a minority of patients present with an indolent, asymptomatic form. Case Report: A 44-year-old man was diagnosed with asymptomatic T-cell prolymphocytic leukemia after routine blood tests revealed persistent lymphocytosis. Immunophenotyping revealed a mature CD4–/CD8+ T-cell population. Cytogenetic analysis showed 14q11.2 abnormalities with TCRAD rearrangement by fluorescent in situ hybridization. A monoclonal T-cell population was confirmed by […]

ABSTRACT Agents that inhibit programmed cell death (IPD-1) in T lymphocytes are indicated for patients with advanced cancer. However, some individuals may develop endocrinological conditions, such as diabetes, thyroid dysfunction, and lipodystrophy, after treatment. This systematic review and case report of IPD-1 lipodystrophies describes a patient who received nivolumab treatment for advanced clear cell renal carcinoma and subsequently developed diabetes as well as facial and body lipodystrophy. The patient complained of social distress due to her facial appearance. We treated […]

ABSTRACT Follicular helper T lymphocytes are a subpopulation of CD4+ T lymphocytes initially identified in germinal centers of follicles found in secondary lymphoid organs. The primary function of follicular helper T lymphocytes is to help B lymphocytes’ antibody production. Changing of antibody class and affinity, B cell differentiation and memory generation depend on cooperation between follicular helper T lymphocytes and B cells. In blood, follicular helper T lymphocytes are called circulating follicular helper T lymphocytes. They are considered to have […]

ABSTRACT Healthy aging is partly related to appropriate function of the immune system. As already reported, some changes in this system are observed, including reduced number and repertoire of T cells due to thymic involution, accumulation of memory T cells by chronic infections, homeostatic proliferation compensating for the number of naïve T cells, decreased proliferation of T cells against a stimulus, telomere shortening, replicative senescence of the T cells, and inflammaging, besides the accumulation of myeloid-derived suppressor cells. The purpose […]

ABSTRACT Objective: To investigate the correlation between total lymphocyte and CD3+ T cell counts in peripheral blood in renal transplant patients treated with anti-thymocyte globulin, and discuss related outcomes. Methods: A single-center, retrospective study involving 226 patients submitted to kidney transplant between 2008 and 2013, and treated with anti-thymocyte globulin for induction or treatment of cellular rejection. Doses were adjusted according to CD3+ T cell or total lymphocyte counts in peripheral blood. Results: A total of 664 paired samples were […]