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Epimedium polysaccharides attenuates hematotoxicity by reducing oxidative stress and enhancing immune function in mice model of benzene-induced bone marrow failure.
Biomedicine & Pharmacotherapy 2020 January 31
Chronic benzene (BZ) exposure is associated with multiple adverse health effects and leads to progressive bone marrow failure (BMF). BZ-induced BMF is an acquired aplastic anemia characterized by severe anemia, neutropenia and thrombocytopenia, which is likely caused by immunotoxicity and oxidative stress. Previous studies showed that Epimedium polysaccharides (EPS), a natural and major herbal compound derived from Epimedium, has immunomodulatory and antioxidant potential. The purpose of this study was to evaluate the potential efficacy of EPS against BZ-induced BMF. BMF mouse model was established by subcutaneous injection of 2 ml/kg BZ in CD1 mice. Mice received daily oral treatment with 100 mg/kg high-dose EPS and 20 mg/kg low-dose EPS for four weeks. Our data showed that EPS treatment alleviated BZ-associated weight loss and increased the number of whole blood cells in peripheral blood and nucleated cells in bone marrow. Furthermore, EPS treatment decreased apoptotic rate and reactive oxygen species production, S-phase arrest in bone marrow cells. Finally, EPS treatment improved T cell-mediated immune suppression by increasing CD3+, CD4 + T-cell counts, and CD4+/CD8+ ratio. and modulated hematopoietic cytokines including EPO, IL-11, and IL-2 in peripheral blood. Our study suggests that EPS is a potential therapeutic target to attenuate hematotoxicity induced by BZ.
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