We report a 21-year-old woman who had acute lymphocytic leukemia with a relapse in the peripheral nervous system after bone marrow transplantation. She developed gait disturbance and numbness of the lower limb extremities, with gradual worsening. Neurological examination detected paraparesis associated with areflexia and stocking-type paresthesia. An examination of the cerebro-spinal fluid detected leukemicells. T2-weighted MRI of the lumbar spine showed multiple hyperintense signal lesions at the bodies of vertebra, spinous processes, and pedicles. Based on the diagnosis of recurrent acute lymphocytic leukemia with tumor infiltration to the meninges (meningeal leukemia), she received chemotherapy, after which her neurological symptoms and signs gradually improved. We would like to emphasize that neurological examination is important to detect CNS relapse in a patient with leukemia, even in hematological complete remission.
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J Exp Biol
January 2025
Grupo de Ecología Fisiológica y del Comportamiento. Instituto de Investigaciones Marinas y Costeras (IIMyC). CONICET - Universidad Nacional de Mar del Plata, Argentina.
Animal thermoregulation may have significant costs and compete directly or indirectly with other energetically demanding processes, such as immune function. Although the subterranean environment is characterized by thermally-stable conditions, small changes in ambient temperature could be critical in shaping immunity. However, little is known about the effects of ambient temperature, in naturally varying ranges, on immunity of wild species.
View Article and Find Full Text PDFAJNR Am J Neuroradiol
January 2025
Department of Neurology, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium.
Purpose: Posterior fossa ring-enhancing lesions (PFREL) in the adult immunocompetent hosts pose a diagnostic challenge. We aimed to evaluate the spectrum of PFREL etiologies and propose a diagnostic algorithm.
Methods: This study involved a retrospective analysis of PFREL cases from our institution (January 2023 to April 2024) and a systematic literature review conducted using Embase and PubMed databases following the PRISMA 2020 guidelines.
BMJ Open
January 2025
Cancer Research UK Clinical Trials Unit, University of Birmingham, Birmingham, UK.
Introduction: Graft-versus-host disease (GvHD) remains a major complication of allogeneic stem cell transplantation (allo-SCT), affecting 30-70% of patients (representing 800 new patients per year in the UK). The risk is higher in patients undergoing unrelated allo-SCT. About 1 in 10 patients die as a result of GvHD or through complications of its treatment.
View Article and Find Full Text PDFSci Transl Med
January 2025
Division of Pediatric Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115, USA.
Tissue-specific T cell immune responses play a critical role in maintaining organ health but can also drive immune pathology during both autoimmunity and alloimmunity. The mechanisms controlling intratissue T cell programming remain unclear. Here, we leveraged a nonhuman primate model of acute graft-versus-host disease (aGVHD) after allogeneic hematopoietic stem cell transplantation to probe the biological underpinnings of tissue-specific alloimmune disease using a comprehensive systems immunology approach including multiparameter flow cytometry, population-based transcriptional profiling, and multiplexed single-cell RNA sequencing and TCR sequencing.
View Article and Find Full Text PDFSci Transl Med
January 2025
Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
At this stage in the COVID-19 pandemic, most infections are "breakthrough" infections that occur in individuals with prior severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) exposure. To refine long-term vaccine strategies against emerging variants, we examined both innate and adaptive immunity in breakthrough infections. We performed single-cell transcriptomic, proteomic, and functional profiling of primary and breakthrough infections to compare immune responses from unvaccinated and vaccinated individuals during the SARS-CoV-2 Delta wave.
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