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Open AccessJournal ArticleDOI

Hematopoiesis during Ontogenesis, Adult Life, and Aging

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TLDR
In the bone marrow of vertebrates, two types of stem cells coexist, i.e., hemopoietic stem cells and mesenchymal stem cells (MSCs).
Abstract
In the bone marrow of vertebrates, two types of stem cells coexist—hematopoietic stem cells (HSCs) and mesenchymal stem cells (MSCs). Hematopoiesis only occurs when these two stem cell types and their descendants interact. The descendants of HSCs supply the body with all the mature blood cells, while MSCs give rise to stromal cells that form a niche for HSCs and regulate the process of hematopoiesis. The studies of hematopoiesis were initially based on morphological observations, later extended by the use of physiological methods, and were subsequently augmented by massive application of sophisticated molecular techniques. The combination of these methods produced a wealth of new data on the organization and functional features of hematopoiesis in the ontogenesis of mammals and humans. This review summarizes the current views on hematopoiesis in mice and humans, discusses the development of blood elements and hematopoiesis in the embryo, and describes how the hematopoietic system works in the adult organism and how it changes during aging.

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CRLF1 and CLCF1 in Development, Health and Disease

TL;DR: The role of the soluble type I cytokine receptor CRLF1 and the Interleukin (IL)-6 cytokine CLCF1 (cardiotrophin-like cytokine factor 1) during development in physiological and pathological conditions with particular emphasis on Crisponi/cold-induced sweating syndrome is highlighted.
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Biomarkers of aging

TL;DR: Aging biomarkers are a combination of biological parameters to assess agerelated changes, track the physiological aging process, and predict the transition into a pathological status as discussed by the authors , which can help us answer the following three fundamental questions in aging research: How old are we? Why do we get old? And how can we age slower?
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Bone Marrow Aging and the Leukaemia-Induced Senescence of Mesenchymal Stem/Stromal Cells: Exploring Similarities

TL;DR: It is proposed that mesenchymal stem cells are similarly affected in these different leukaemias, and that the changes that are observed in terms of cellular function, redox balance, genetics and epigenetics, soluble factor repertoire and stemness are equivalent to those occurring during BM aging and cellular senescence.
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The long and winding road: homeostatic and disordered haematopoietic microenvironmental niches: a narrative review

TL;DR: Clinical translation and critical appraisal of the roles of MSC/C-X-C motif chemokine ligand 12-abundant-reticular cells and the more recently identified skeletal stem cell subsets in bone marrow haematopoietic niche function under homeostatic conditions and during ageing will form the basis of this research review.
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Application of haematology parameters for health management in fish farms

Hui Jie Chen, +1 more
TL;DR: In this paper , the authors provide a summary of the recent advancements in haematology health indicators in fish, and discuss the trends and future challenges for the application of hahematology in fish.
References
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Journal ArticleDOI

Evidence that the number of hematopoietic stem cells per animal is conserved in mammals

TL;DR: The data imply that the output of differentiated cells per feline HSC must vastly exceed that of murine HSCs, and if the total number of human H SCs were also equivalent to the totalNumber of HSCS in cat and mouse, the frequency of humanHSCs would be 0.7 to 1.5 HSC s, a frequency that is 20-fold less than estimated by the NOD/SCID repopulating assay.
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SIRT1 Regulates Differentiation of Mesenchymal Stem Cells by Deacetylating β-Catenin

TL;DR: It is concluded that SIRT1 deacetylates β‐catenin to promote its accumulation in the nucleus leading to transcription of genes for MSC differentiation, thereby restoring nuclear localization and differentiation potential in MSCKO cells.
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Hematopoietic Stem Cells Count and Remember Self-Renewal Divisions.

TL;DR: It is shown that the mechanism of expansion involves progressively lengthening periods between cell divisions, with long-term regenerative potential lost upon a fifth division, and suggests that HSCs accumulate discrete memory stages over their divisional history.
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Stem Cell Quiescence: Dynamism, Restraint, and Cellular Idling

TL;DR: Recent advances in understanding of stem cell quiescence are discussed and techniques enabling more refined analyses of quiescent stem cell dynamics in vivo are discussed.
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