Obesity and inflammation and the effect on the hematopoietic system

Bruno Deltreggia Benites, Simone Cristina Olenscki Gilli, Sara Teresinha Olalla Saad, Bruno Deltreggia Benites, Simone Cristina Olenscki Gilli, Sara Teresinha Olalla Saad

Abstract

Bone marrow is organized in specialized microenvironments known as 'marrow niches'. These are important for the maintenance of stem cells and their hematopoietic progenitors whose homeostasis also depends on other cell types present in the tissue. Extrinsic factors, such as infection and inflammatory states, may affect this system by causing cytokine dysregulation (imbalance in cytokine production) and changes in cell proliferation and self-renewal rates, and may also induce changes in the metabolism and cell cycle. Known to relate to chronic inflammation, obesity is responsible for systemic changes that are best studied in the cardiovascular system. Little is known regarding the changes in the hematopoietic system induced by the inflammatory state carried by obesity or the cell and molecular mechanisms involved. The understanding of the biological behavior of hematopoietic stem cells under obesity-induced chronic inflammation could help elucidate the pathophysiological mechanisms involved in other inflammatory processes, such as neoplastic diseases and bone marrow failure syndromes.

Keywords: Hematopoietic system; Inflammation; Obesity.

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Source: PubMed

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