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One hundred thirty-four germ line PU.1 variants and the agammaglobulinemic patients carrying them.
Blood
January 2025
Division of Immunology and Allergy, Children's Hospital of Philadelphia; Department of Pediatrics, Perelman School of Medicine; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States.
Leukopoiesis is lethally arrested in mice lacking the master transcriptional regulator PU.1. Depending on the animal model, subtotal PU.
View Article and Find Full Text PDFGut microbial dysbiosis, IgA, and Enterococcus in common variable immunodeficiency with immune dysregulation.
Microbiome
January 2025
Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht and Utrecht University, Utrecht, the Netherlands.
Background: Common variable immunodeficiency (CVID) is characterized by hypogammaglobulinemia and recurrent infections. Significant morbidity and mortality are caused by immune dysregulation complications (CVIDid), which affect around one-third of CVID patients and have a poorly understood etiology. Here, we investigate the hypothesis that gut microbial dysbiosis contributes to the inflammation underlying CVIDid.
View Article and Find Full Text PDFA Case of X-Linked Agammaglobulinemia and COVID-19 in a Japanese Infant.
J Nippon Med Sch
January 2025
Department of Pediatrics, Nippon Medical School.
An infant was diagnosed as having X-linked agammaglobulinemia (XLA) at age 3 months and was receiving immunoglobulin replacement therapy. He developed SARS-CoV-2 infection at age 7 months and was treated with intravenous immunoglobulin, remdesivir, and dexamethasone. His respiratory symptoms improved quickly, and the infection resolved.
View Article and Find Full Text PDFNephrotic Syndrome and Recurrent Infection.
Iran J Allergy Asthma Immunol
October 2024
Clinical Immunology Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
Nephrotic syndrome is characterized by the leakage of protein from the blood into the urine along with the triad of proteinuria, albuminuria, and peripheral edema. Loss of protein leads to the loss of immunoglobulin and complements. X-linked agammaglobulinemia (XLA), or Bruton disease, is a primary immunodeficiency disease caused by a defect in the development of B cells in the bone marrow and a low serum level of immunoglobulins.
View Article and Find Full Text PDFOutcomes of X-Linked Agammaglobulinaemia Patients.
J Clin Immunol
November 2024
Newcastle upon Tyne NHS Foundation Trust, Newcastle upon Tyne, UK.
Background: X-linked agammaglobulinaemia (XLA), caused by mutations in BTK, is characterised by low or absent peripheral CD19 + B lymphocytes and agammaglobulinaemia. The mainstay of treatment consists of immunoglobulin replacement therapy (IgRT). As this cannot fully compensate for the immune defects in XLA, patients may therefore continue to be at risk of complications.
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