2008
DOI: 10.1007/s10517-008-0053-2
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Reaction of bone marrow hematopoiesis to the toxic effect of paclitaxel

Abstract: Intraperitoneal injection of paclitaxel (Mitotax) in a single dose of 40 mg/kg was followed by an increase in the number of mitotic granulocytic and erythroid cells, hypoplasia, and pancytopenia of the bone marrow in CBA/CaLac mice. The test preparation decreased the number of hematopoietic precursor cells for erythropoiesis and granulocytopoiesis, but increased the count of polyploid cells and incidence of structural and genomic abnormalities in bone marrow cells. These changes were reversible.

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Cited by 8 publications
(7 citation statements)
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“…Compared to other studies, the doses of Ptx given here were higher (90–120 mg/kg compared to 60 mg/kg) and the period over which the doses were given was longer (three daily doses or every other day for 7 days compared to two doses over 1.5 h [54, 55, 57]. Romero-Benitez observed a greater suppressing effect on the erythroid lineage cell numbers in bone marrow compared to myeloid lineage cells [54].…”
Section: Discussionmentioning
confidence: 74%
“…Compared to other studies, the doses of Ptx given here were higher (90–120 mg/kg compared to 60 mg/kg) and the period over which the doses were given was longer (three daily doses or every other day for 7 days compared to two doses over 1.5 h [54, 55, 57]. Romero-Benitez observed a greater suppressing effect on the erythroid lineage cell numbers in bone marrow compared to myeloid lineage cells [54].…”
Section: Discussionmentioning
confidence: 74%
“…Nevertheless, no significant alterations were observed in DNA fragmentation or cell cycle profile after subchronic exposure. Churin et al [8] reported that paclitaxel bone marrow toxicity is evidenced a few days after administration, showing a reverse and recovered pattern 14 days later. Thus, considering that genotoxicity and hematological parameters of paclitaxel treated mice were evaluated on the 44th day, it is possible that bone marrow features were reestablished to normal values.…”
Section: Discussionmentioning
confidence: 99%
“…Outro aspecto que deve ser considerado na interação de xenobióticos com o organismo diz respeito às linhagens celulares precursoras da medula óssea e às células sangüíneas circulantes, as quais participam de funções críticas na defesa do hospedeiro (HARVEY, 1996;DRELA, 2006;CHURIN et al, 2008). Neste sentido, de acordo com Guest e Uetrecht (2000), os xenobióticos que causam toxicidade na medula óssea pertencem a um grupo heterogêneo de compostos que agem por meio de vários mecanismos; entretanto, a etiologia destas ações tóxicas é ainda pouco compreendida.…”
Section: Sobre a Ação De Xenobióticos Sobre O Sistema Hematopoiético E óRgãos Linfóidesunclassified
“…Neste sentido, de acordo com Guest e Uetrecht (2000), os xenobióticos que causam toxicidade na medula óssea pertencem a um grupo heterogêneo de compostos que agem por meio de vários mecanismos; entretanto, a etiologia destas ações tóxicas é ainda pouco compreendida. Uma busca na literatura mostra que a hematotoxicidade é manifestada pela alteração do número de células maduras no sangue ou medula óssea, e pode ser expressa pela destruição excessiva ou supressão da produção destas células (LANNING, 1998;SHEN et al, 2005;CHURIN et al, 2008).…”
Section: Sobre a Ação De Xenobióticos Sobre O Sistema Hematopoiético E óRgãos Linfóidesunclassified
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