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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 PDFA Neonate Presenting With Large Abdominal Mass: A Rare Case of Congenital Leukemia.
J Pediatr Hematol Oncol
January 2025
Department of Pediatrics, Teerthanker Mahaveer Medical College and Research Center, TMU, Moradabad, Uttar Pradesh, India.
Leukemia symptoms occurring in the first 4 weeks of infancy are known as congenital leukemia. We present a case of congenital leukemia in a full-term neonate manifesting at birth with a grossly distended abdomen due to a large abdominal mass. Ultrasonography of the abdomen showed a large abdominal mass originating from the liver.
View Article and Find Full Text PDFJAGN1 (Jagunal-homolog1) is a ER-resident transmembrane protein which is part of the early secretory pathway and granulocyte colony-stimulating factor receptor mediated signaling. Autosomal recessively inherited variants in the JAGN1 gene lead to congenital neutropenia, early-onset bacterial infections, aphthosis and skin abscesses due to aberrant differentiation and maturation of neutrophils. In addition, bone metabolism disorders and a syndromic phenotype, including facial features, short stature and neurodevelopmental delay, have been reported in affected patients.
View Article and Find Full Text PDFALDH Enzymes and Hematological Diseases: A Scoping Review of Literature.
Discov Med
December 2024
Department of Biological Hematology, Tours University Hospital, 37000 Tours, France.
Aldehyde dehydrogenases (ALDHs) constitute a group of enzymes that catalyze the oxidation of aldehydes to carboxylic acids. The human ALDH superfamily, including 19 different isoenzymes (ALDH1A1, ALDH1A2, ALDH1A3, AHDH1B1, ALDH1L1, ALDH1L2, ALDH2, ALDH3A1, ALDH3A2, ALDH3B1, ALDH3B2, ALDH4A1, ALDH5A1, ALDH6A1, ALDH7A1, ALDH8A1, ALDH9A1, ALDHA16A1, ALDH18A1), displays different key physiological and toxicological functions, with specific tissue expression and substrate specificity. Several studies have established that ALDH are interesting markers for the identification and quantification of human hematopoietic stem cells and cancer stem cells, notably leukemic stem cells.
View Article and Find Full Text PDFDouble mutant DNMT3A AML: a unique subtype experiencing increased DNA damage and poor prognosis.
Blood Adv
December 2024
Erasmus University Medical Center, Rotterdam, Netherlands.
Mutation of DNMT3A, encoding a de novo methyltransferase essential for cytosine methylation, is a common early event in clonal hematopoiesis (CH) and adult acute myeloid leukemia (AML). Spontaneous deamination of methylated cytosines damages DNA, which is repaired by the base excision repair (BER) enzymes MBD4 and TDG. Congenital MBD4-deficiency has been linked to early-onset CH and AML, and is marked by exceedingly high levels of DNA damage and mutation of DNMT3A.
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