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Abstract
Upon inflammation, the bone marrow (BM) landscape undergoes significant architectural and functional modifications. Stimulation of the hematopoietic niche triggers a series of lightning events, which begin with stem/progenitor blood elements mobilization and culminates with the activation of immune responses. Ageing partially mirrors this process, albeit with a propensity towards chronic inflammation and immune dysfunction. Age-related chronic inflammation disrupts bone homeostasis and accompanies impaired tissue regeneration. Thus, focusing on the bone marrow's dynamics during inflammatory bone diseases could lay the way for the development of novel therapeutic platforms aimed at niche reprogramming. Herein, we summarize inflammatory and age-induced processes in multiple BM compartments, with particular reference to hematopoietic, stromal stem/progenitor cells, and mature immunocytes. Finally, we focus on autophagy and its potential to clinically re-modulate the pathological "flogistic" bias, possibly by restoring functional phenotypes within the bone marrow niche elements.
Published Version
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