Roda E, Coccini T, Acerbi D, Castoldi AF, Manzo L. Comparative in vitro and ex-vivo myelotoxicity of aflatoxins B1 and M1 on haematopoietic progenitors (BFU-E, CFU-E, and CFU-GM): species-related susceptibility.
Toxicol In Vitro 2009;
24:217-23. [PMID:
19747537 DOI:
10.1016/j.tiv.2009.09.005]
[Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2009] [Revised: 09/02/2009] [Accepted: 09/04/2009] [Indexed: 10/20/2022]
Abstract
Haemato- and myelotoxicity are adverse effects caused by mycotoxins. Due to the relevance of aflatoxins to human health, the present study, employing CFU-GM-, BFU-E- and CFU-E-clonogenic assays, aimed at (i) comparing, in vitro, the sensitivity of human vs. murine haematopoietic progenitors to AFB1 and AFM1 (0.001-50microg/ml), (ii) assessing whether a single AFB1 in vivo treatment (0.3-3mg/kgb.w.) alters the ability of murine bone marrow cells to form myeloid and erythroid colonies, and (iii) comparing the in vitro with the in vitro ex-vivo data. We demonstrated (i) species-related sensitivity to AFB1, showing higher susceptibility of human myeloid and erythroid progenitors (IC(50) values: about 4 times lower in human than in murine cells), (ii) higher sensitivity of CFU-GM and BFU-E colonies, both more markedly affected, particularly by AFB1 (IC(50): 2.45+/-1.08 and 1.82+/-0.8microM for humans, and 11.08+/-2.92 and 1.81+/-0.20microM for mice, respectively), than the mature CFU-E (AFB1 IC(50): 12.58+/-5.4 and 40.27+/-6.05microM), irrespectively of animal species, (iii) regarding AFM1, a species- and lineage-related susceptibility similar to that observed for AFB1 and (iv) lack of effects after AFB1 in vivo treatment on the proliferation of haematopoietic colonies.
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