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Multilocular Thymic Cyst with High F Fluorodeoxyglucose Uptake and Rheumatoid Arthritis: A Case Report.
J Clin Med
January 2025
Division of Thoracic Surgery, Policlinico Umberto I, Sapienza University of Rome, 00165 Rome, Italy.
multilocular thymic cysts are uncommon acquired cysts in the anterior mediastinum caused by incomplete thymic involution. They may be associated with autoimmune diseases, such as rheumatoid arthritis and systemic sclerosis. a 61-year-old man with a history of rheumatoid arthritis for 8 years was referred to our unit because of a multiloculated mass in the anterior mediastinum with a high F fluorodeoxyglucose uptake at PET-CT scan.
View Article and Find Full Text PDFMolecular and Cellular Mechanisms of Immunosenescence: Modulation Through Interventions and Lifestyle Changes.
Biology (Basel)
December 2024
Department of Pediatrics, Medical University of Innsbruck, 6020 Innsbruck, Austria.
Immunosenescence, the age-related decline in immune function, is a complex biological process with profound implications for health and longevity. This phenomenon, characterized by alterations in both innate and adaptive immunity, increases susceptibility to infections, reduces vaccine efficacy, and contributes to the development of age-related diseases. At the cellular level, immunosenescence manifests as decreased production of naive T and B cells, accumulation of memory and senescent cells, thymic involution, and dysregulated cytokine production.
View Article and Find Full Text PDFRejuvenating the immune system.
Mol Oncol
January 2025
Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Greece.
Rejuvenation of elementary immune system components has emerged as a promising strategy to deal with increased susceptibility to infections, cancers, autoimmune disorders, and low efficacy to vaccines, frequently accompanying aging. In this context, the thymus has gained significant attention. A recent study by Santamaria et al.
View Article and Find Full Text PDFThymic Eosinophils: What Are You Doing Here?
J Leukoc Biol
January 2025
Department of Biochemistry and Microbiology, Faculty of Science, University of Victoria, Victoria BC, Canada.
The thymus is a primary lymphoid organ where major types of T lymphocytes undergo essential developmental processes. Eosinophils are among the cell types present in microenvironments within the thymus, and perhaps surprisingly, the role of thymic eosinophils, especially during homeostatic conditions, remains unclear. Major physiological events impact thymic organization and function throughout life: including age-related involution, pregnancy, and exposure to chemotherapy or radiation.
View Article and Find Full Text PDFImmunosenescence: Aging and Immune System Decline.
Vaccines (Basel)
November 2024
Department of Biological Sciences, Kean University, Union, NJ 07083, USA.
Immunosenescence, a systematic reduction in the immune system connected with age, profoundly affects the health and well-being of elderly individuals. This review outlines the hallmark features of immunosenescence, including thymic involution, inflammaging, cellular metabolic adaptations, and hematopoietic changes, and their impact on immune cells such as macrophages, neutrophils, T cells, dendritic cells, B cells, and natural killer (NK) cells. Thymic involution impairs the immune system's capacity to react to novel antigens by reducing thymopoiesis and shifting toward memory T cells.
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