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A Senescent Cluster in Aged Human Hematopoietic Stem Cell Compartment as Target for Senotherapy.
Int J Mol Sci
January 2025
Department of Medicine V, Heidelberg University, 69117 Heidelberg, Germany.
To identify the differences between aged and young human hematopoiesis, we performed a direct comparison of aged and young human hematopoietic stem and progenitor cells (HSPCs). Alterations in transcriptome profiles upon aging between humans and mice were then compared. Human specimens consist of CD34+ cells from bone marrow, and mouse specimens of hematopoietic stem cells (HSCs; Lin- Kit+ Sca1+ CD150+).
View Article and Find Full Text PDFDysregulation of transposable elements and PIWI-interacting RNAs in myelodysplastic neoplasms.
Biomark Res
January 2025
Department of Genomics, Institute of Hematology and Blood Transfusion, Prague, Czech Republic.
Background: Myelodysplastic neoplasms (MDS) are heterogeneous hematopoietic disorders characterized by ineffective hematopoiesis and genome instability. Mobilization of transposable elements (TEs) is an important source of genome instability leading to oncogenesis, whereas small PIWI-interacting RNAs (piRNAs) act as cellular suppressors of TEs. However, the roles of TEs and piRNAs in MDS remain unclear.
View Article and Find Full Text PDFClonal hematopoiesis of indeterminate potential and type 2 diabetes mellitus among patients with STEMI: from a prospective cohort study combing bidirectional Mendelian randomization.
Cardiovasc Diabetol
January 2025
Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, No.167, Beijing, 100037, China.
Aim: Both clonal hematopoiesis of indeterminate potential (CHIP) and type 2 diabetes mellitus (T2DM) are conditions closely associated with advancing age. This study delves into the possible implications and prognostic significance of CHIP and T2DM in patients diagnosed with ST-segment elevation myocardial infarction (STEMI).
Methods: Deep-targeted sequencing employing a unique molecular identifier (UMI) for the analysis of 42 CHIP mutations-achieving an impressive mean depth of coverage at 1000 × -was conducted on a cohort of 1430 patients diagnosed with acute myocardial infarction (473 patients with T2DM and 930 non-DM subjects).
Exploring the Association Between Hypothyroidism, Mean Platelet Volume, and Red Cell Distribution Width: A Case-Control Study.
Cureus
December 2024
College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, SAU.
Background: Thyroid hormones are important in regulating hematopoiesis. Recent research has suggested that red cell distribution width (RDW) and mean platelet volume (MPV) may be useful inflammatory markers in various disorders, including thyroid disorders. Hence, the study aimed to evaluate the association between hypothyroidism, RDW, and MPV.
View Article and Find Full Text PDFAdult Mediastinal Lymphangioma Presenting As Persistent Chest Pain: A Case Report.
Cureus
December 2024
Obstetrics and Gynecology, First Health Cluster, Dammam, SAU.
Mediastinal lymphangiomas are rare benign tumors arising from lymphatic system malformations, most commonly seen in pediatric populations. In adults, they are exceedingly rare and present diagnostic challenges due to nonspecific symptoms and imaging overlap with other mediastinal masses. Diagnosis is typically based on imaging, including CT and MRI, with histopathology confirming the diagnosis.
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