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VEXAS, Chediak-Higashi syndrome and Danon disease: myeloid cell endo-lysosomal pathway dysfunction as a common denominator?
Cell Mol Biol Lett
January 2025
University Cote d'Azur, Inserm, C3M, Nice, France.
Vacuolization of hematopoietic precursors cells is a common future of several otherwise non-related clinical settings such as VEXAS, Chediak-Higashi syndrome and Danon disease. Although these disorders have a priori nothing to do with one other from a clinical point of view, all share abnormal vacuolization in different cell types including cells of the erythroid/myeloid lineage that is likely the consequence of moderate to drastic dysfunctions in the ubiquitin proteasome system and/or the endo-lysosomal pathway. Indeed, the genes affected in these three diseases UBA1, LYST or LAMP2 are known to be direct or indirect regulators of lysosome trafficking and function and/or of different modes of autophagy.
View Article and Find Full Text PDFAsymptomatic pink nodules in an African-American woman.
JAAD Case Rep
February 2025
Dermatology Department, NYC Health + Hospital/Metropolitan, New York, New York.
Confocal Reflectance Microscopy Findings in Juvenile Xanthogranuloma: Report of 2 Cases.
Pediatr Dermatol
January 2025
Department of Dermatology, University of new Mexico School of Medicine, Albuquerque, New Mexico, USA.
Juvenile xanthogranuloma (JXG) is the most common type of non-Langerhans cell histiocytosis and is characterized by a benign proliferation of dermal dendrocytes. We report two children diagnosed with JXG with reflectance confocal microscopy (RCM), a noninvasive imaging technology that allows for multi-layer visualization of the skin. This report demonstrates the emerging role of RCM as a painless diagnostic aid for JXG and other cutaneous diseases in children.
View Article and Find Full Text PDFA hidden enemy: Understanding the hemophagocytic syndrome in children under five years of age in a high-complexity institution in southwestern Colombia.
Biomedica
December 2024
Facultad de Ciencias de la Salud, Universidad ICESI, Cali, Colombia, Departamento de Pediatría, Alergología e Inmunología Pediátrica, Fundación Valle del Lili, Cali, Colombia.
Introduction. Hemophagocytic syndrome is an under-recognized condition with high mortality in the pediatric population. It is characterized by excessive activation of immune cells and cytokine release, leading to persistent inflammation.
View Article and Find Full Text PDFCOX Regression Analysis and Mortality Risk Prediction Model of 85 Adult Patients with Secondary Hemophagocytic Lymphohistiocytosis.
Br J Hosp Med (Lond)
December 2024
Department of Emergency, Peking University People's Hospital, Beijing, China.
Secondary hemophagocytic lymphohistiocytosis (sHLH) is a rare, rapidly progressive and highly lethal disease. This retrospective cohort study aims to analyze the factors influencing the mortality risk in adult patients with sHLH, which are instrumental to improving our understanding of the high mortality risks associated with sHLH. This study included 85 patients diagnosed with sHLH who were admitted and treated in the Department of Emergency, Peking University People's Hospital between April 2015 and July 2023.
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