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Mycobacterium tuberculosis resisters despite HIV exhibit activated T cells and macrophages in their pulmonary alveoli.
J Clin Invest
January 2025
Program in Infectious Diseases and Global Health, The Research Institute of the McGill University Health Centre, Montréal, Canada.
Natural resistance to Mycobacterium tuberculosis (Mtb) infection in some people with HIV (PWH) is unexplained. We performed single cell RNA-sequencing of bronchoalveolar lavage cells, unstimulated or ex vivo stimulated with Mtb, for 7 PWH who were TST & IGRA positive (called LTBI) and 6 who were persistently TST & IGRA negative (called resisters). Alveolar macrophages (AM) from resisters displayed a baseline M1 macrophage phenotype while AM from LTBI did not.
View Article and Find Full Text PDFTuberculous longitudinal extensive transverse myelitis: 2 cases and literature review.
J Spinal Cord Med
January 2025
Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
Context: This study aimed to investigate the characteristics, diagnosis, and management of tuberculous longitudinally extensive transverse myelitis (TB-LETM), a rare manifestation of tuberculosis.
Findings: We analyzed two rare cases of TB-LETM and discussed their clinical manifestations and imaging findings in the context of the relevant literature. Patient 1, a 23-year-old female, presented with quadriplegia and dysuria, and spinal magnetic resonance imaging (MRI) revealed lesions extending from C1 to T3.
Case report: HSV lymphadenitis in immunocompromised patient with CLL.
Front Oncol
December 2024
Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, United States.
Background: Richter's transformation (RT) in chronic lymphocytic leukemia (CLL) is associated with poor prognosis and requires prompt modifications in patient care. CLL patients are susceptible to severe infections due to immune dysregulation induced by their malignancy and immunosuppressive therapies.
Case Presentation: We present a case of a 63-year-old man with CLL who previously achieved remission and presented with a right inguinal mass.
Immune profiling of ART-conceived children in Kazakhstan: a case-control study.
Front Pediatr
November 2024
Department of Assisted Reproductive Technologies, International Clinical Centre of Reproduction "PERSONA", Almaty, Kazakhstan.
Objective: The increasing use of assisted reproductive technologies (ART) has led to a growing interest in the health outcomes of offspring. However, the impact of ART on the immune system of children remains poorly understood. While only two publications were found, their findings contradict each other and did not consider other risk factors in their analysis except for ART use.
View Article and Find Full Text PDFFoxO1/Rictor axis induces a nongenetic adaptation to ibrutinib via Akt activation in chronic lymphocytic leukemia.
J Clin Invest
October 2024
Molecular Medicine, CEITEC Masaryk University, Brno, Czechia.
Bruton tyrosine kinase (BTK) inhibitor therapy induces peripheral blood lymphocytosis in chronic lymphocytic leukemia (CLL), which lasts for several months. It remains unclear whether nongenetic adaptation mechanisms exist, allowing CLL cells' survival during BTK inhibitor-induced lymphocytosis and/or playing a role in therapy resistance. We show that in approximately 70% of CLL cases, ibrutinib treatment in vivo increases Akt activity above pretherapy levels within several weeks, leading to compensatory CLL cell survival and a more prominent lymphocytosis on therapy.
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