Search results for " Lymphoid"
showing 10 items of 89 documents
HLA-Cw4 Association with Acute Lymphoblastic Leukaemia in Sicilian Patients
1988
The HLA frequencies of 50 Sicilian patients affected with acute lymphoblastic leukaemia (ALL) were examined. The frequency of Cw4 antigen was significantly increased in patients. Thus results obtained in our homogeneous population confirm in part previous reports suggesting that Cw4-related genetic factors might be involved in the susceptibility to aetiological or pathogenetic mechanisms which play a role in some haematological malignancies.
Type 3 innate lymphoid cells producing IL-17 and IL-22 are expanded in the gut, in the peripheral blood, synovial fluid and bone marrow of patients w…
2015
Background The aim of the study was to better characterise the immunological origin and the behaviour of interleukin (IL)-23-responsive innate lymphoid cells (ILCs) in the gut, synovial fluid (SF) and bone marrow (BM) of patients with ankylosing spondylitis (AS).Methods ILC1, ILC2 and ILC3 cells were determined and characterised by confocal microscopy and flow cytometry in ileal and BM biopsies, in peripheral blood (PB) and SF mononuclear cells obtained from patients with AS and controls. Mucosal vascular addressin cell adhesion molecule 1 (MADCAM-1), IL-7, IL-15 and aggregates of lymphoid tissue inducer cells (LTi) were evaluated by immunohistochemistry. The in vitro ability of epithelial …
Obstructive sleep apnoea in adult patients post-tonsillectomy
2021
Background: The impact of removing the upper airway lymphoid tissue and in particular, tonsillectomy, in adults with OSA has not been demonstrated in large populations. Aims: To compare the severity of OSA and the prevalence of cardiovascular, metabolic and respiratory co-morbidities between patients with OSA who had undergone previous tonsillectomy and those who had not. Methods: The 19,711 participants in this study came from the European sleep apnea database (ESADA) which comprises data from unselected adult patients aged 18–80 years with a history of symptoms suggestive of OSA referred to sleep centers throughout Europe. Results: There were no differences between the two groups in terms…
The Transcription Factor T-bet Is Induced by IL-15 and Thymic Agonist Selection and Controls CD8αα+ Intraepithelial Lymphocyte Development
2014
Summary CD8αα + intraepithelial lymphocytes (IELs) are instrumental in maintaining the epithelial barrier in the intestine. Similar to natural killer cells and other innate lymphoid cells, CD8αα + IELs constitutively express the T-box transcription factor T-bet. However, the precise role of T-bet for the differentiation or function of IELs is unknown. Here we show that mice genetically deficient for T-bet lacked both TCRαβ + and TCRγδ + CD8αα + IELs and thus are more susceptible to chemically induced colitis. Although T-bet was induced in thymic IEL precursors (IELPs) as a result of agonist selection and interleukin-15 (IL-15) receptor signaling, it was dispensable for the generation of IEL…
T helper cell populations: As flexible as the skin?
2011
T helper cells can be defined by the cytokines they produce and are divided into Th1, Th2, Th17, T(FH) or regulatory T cells. Th17 cells have been shown to produce, in addition to IL-17, IL-22. In the current issue of the European Journal of Immunology, an article by Larsen et al. (Eur. J. Immunol. 2011. 41: 2596-2605) provides evidence that human T helper cells, like murine cells, can also express IL-22 in the absence of the other T helper cell signature cytokines. Moreover, they show that these IL-22-producing cells, namely Th22 cells, can be found in the skin of psoriasis patients, where they might contribute to the pathogenesis of this inflammatory skin disease. Finally, they show that,…
Interleukin-30 feeds breast cancer stem cells via CXCL10 and IL23 autocrine loops and shapes immune contexture and host outcome
2021
BackgroundBreast cancer (BC) progression to metastatic disease is the leading cause of death in women worldwide. Metastasis is driven by cancer stem cells (CSCs) and signals from their microenvironment. Interleukin (IL) 30 promotes BC progression, and its expression correlates with disease recurrence and mortality. Whether it acts by regulating BCSCs is unknown and could have significant therapeutic implications.MethodsHuman (h) and murine (m) BCSCs were tested for their production of and response to IL30 by using flow cytometry, confocal microscopy, proliferation and sphere-formation assays, and PCR array. Immunocompetent mice were used to investigate the role of BCSC-derived IL30 on tumor…
Early deaths in acute lymphoblastic leukemia (ALL): results of the Italian Pediatric Cooperative Group for Therapy of Acute Leukemia (AIL-AIEOP).
1984
In this retrospective multicentric study, we report on early deaths (ie, those that occurred during the first month of treatment) in a total of 943 newly diagnosed ALL pediatric patients registered from 1976 to 1981 at 21 centers of the AIL-AIEOP. Objectives of this study were as follows: (1) to verify the incidence and the cause of early death in a wide population of children with ALL and (2) to elucidate factors associated with early death and therefore to identify “high-risk” groups of patients. Out of the 943 ALL patients, 39 (4.1%) early deaths were registered. Main causes were infection, 20 patients (51.3%); hemorrhage, 11 patients (28.3%); uric acid nephropathy, 2 patients (5.1%); ca…
Health status of young children with cancer following discontinuation of therapy.
1987
This paper reports late effects and health status of 198 children who had cancer or leukemia diagnosed under 2 years of age and their therapies electively withdrawn. This series (92 neuroblastoma (NBL), 57 Wilms' tumor (WT), 46 acute lymphoblastic leukemia (ALL), and 3 non-Hodgkin's lymphoma) was followed for 1-12 years after discontinuation of therapy. Thirty-three children were diagnosed before 1973, 92 between 1973 and 1977, and 73 after 1977 in 16 Italian Pediatric Oncology Centers. As of December 1983, 176 children were reported to be alive and without evidence of primary cancer by physicians responsible for their care. One child died from a second primary tumor, two from late recurren…
Differentiation of Type 1 ILCs from a Common Progenitor to All Helper-like Innate Lymphoid Cell Lineages
2014
SummaryInnate lymphoid cells (ILCs) are a recently recognized group of lymphocytes that have important functions in protecting epithelial barriers against infections and in maintaining organ homeostasis. ILCs have been categorized into three distinct groups, transcriptional circuitry and effector functions of which strikingly resemble the various T helper cell subsets. Here, we identify a common, Id2-expressing progenitor to all interleukin 7 receptor-expressing, “helper-like” ILC lineages, the CHILP. Interestingly, the CHILP differentiated into ILC2 and ILC3 lineages, but not into conventional natural killer (cNK) cells that have been considered an ILC1 subset. Instead, the CHILP gave rise…
Immunosurveillance by gamma delta T cells - lessons from the cancer field
2010
The most common contemporary depiction of the immune response is an early innate response, mounted by myeloid cells, followed by a delayed adaptive lymphoid responses mounted by lymphocytes. This depiction is based on myriad compelling data sets and has made powerful predictions with biological and clinical relevance. Nonetheless, it seems incomplete. Thus, there are lymphocytes that respond very rapidly, commonly to self-encoded molecules over-expressed by dysregulated and/or transformed tissues and cells. The evidence for such “lymphoid stress-surveillance” by gamma delta T cells has been provided by animal models, and supports ongoing clinical investigations of the potential host-protect…