AI Article Synopsis

  • * Research on mice reveals that the main cause of tumor-associated anemia is reduced red blood cell (RBC) survival, not just changes in RBC production.
  • * Exercise training can improve metabolic profiles and reduce inflammation, leading to better RBC survival and decreased fatigue in cancer-bearing mice, suggesting a promising approach for enhancing quality of life in cancer patients.

Article Abstract

A considerable number of patients with cancer suffer from anemia, which has detrimental effects on quality of life and survival. The mechanisms underlying tumor-associated anemia are multifactorial and poorly understood. Therefore, we aimed at systematically assessing the patho-etiology of tumor-associated anemia in mice. We demonstrate that reduced red blood cell (RBC) survival rather than altered erythropoiesis is driving the development of anemia. The tumor-induced inflammatory and metabolic remodeling affect RBC integrity and augment splenic phagocyte activity promoting erythrophagocytosis. Exercise training normalizes these tumor-associated abnormal metabolic profiles and inflammation and thereby ameliorates anemia, in part, by promoting RBC survival. Fatigue was prevented in exercising tumor-bearing mice. Thus, exercise has the unique potential to substantially modulate metabolism and inflammation and thereby counteracts pathological remodeling of these parameters by the tumor microenvironment. Translation of this finding to patients with cancer could have a major impact on quality of life and potentially survival.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8442918PMC
http://dx.doi.org/10.1126/sciadv.abi4852DOI Listing

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