首页> 外文期刊>Journal of applied toxicology >Rat erythrocyte morphological changes after gavage dosing with 2-butoxyethanol: a comparison with the in vitro effects of butoxyacetic acid on rat and human erythrocytes.
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Rat erythrocyte morphological changes after gavage dosing with 2-butoxyethanol: a comparison with the in vitro effects of butoxyacetic acid on rat and human erythrocytes.

机译:用2-丁氧基乙醇强饲后大鼠红细胞形态变化:与丁氧基乙酸对大鼠和人红细胞的体外作用比较。

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摘要

Rats exposed to 2-butoxyethanol (2-BE) develop hemolysis preceded by red blood cell swelling and shape changes. In this study effects on red blood cell morphology of dosing rats with 2-BE by gavage were compared with the effects of incubation of rat erythrocytes in vitro with the principal metabolite of 2-BE, butoxyacetic acid (BAA). Morphology was assessed by bright-field and phase microscopy of Wright's stained blood smears and glutaraldehyde-fixed cells suspended in plasma or buffer. In vivo exposure to 2-BE resulted in stomatocytosis and spherocytosis in blood smears and cup-shaped cells and spherocytosis in the fixed samples. In vitro incubation with BAA produced erythrocytes with cup shapes, spherocytosis and red blood cell ghosts in fixed samples. The stomatocytes observed in the blood smears appear to be the morphological equivalents of the cup-shaped cells observed in fixed samples. A variable degree of echinocytosis was observed in blood smears from animals exposed to 2-BE and in the in vitro experiments with BAA. Stomatocytes, cup-shaped cells, and spherocytes are the principal morphological features of erythrocytes from rats exposed to 2-BE or in vitro exposure to BAA. In comparison, human red blood cells incubated with up to 2.0 mM BAA exhibited none of the morphological changes observed in rat erythrocytes. 2-Butoxyethanol in vivo and BAA in vitro cause similar changes in rat red blood cell morphology, adding further evidence to support the primary role of BAA in the hemolytic effect of 2-BE exposure in the rat.
机译:暴露于2-丁氧基乙醇(2-BE)的大鼠会发生溶血,然后出现红细胞肿胀和形状改变。在这项研究中,将管饲法对2-BE给药大鼠的红细胞形态的影响与将2-BE的主要代谢物丁氧乙酸(BAA)体外孵育大鼠红细胞的效果进行了比较。通过赖特氏染色的血涂片和悬浮在血浆或缓冲液中的戊二醛固定细胞的明场和相位显微镜检查来评估形态。体内暴露于2-BE会导致血涂片和杯形细胞中的胞吞和球囊增多,以及固定样本中的球囊增多。与BAA的体外温育可在固定样品中产生杯状,红细胞增多和红细胞重影的红细胞。在血涂片中观察到的口腔细胞似乎是在固定样本中观察到的杯状细胞的形态等同物。在暴露于2-BE的动物的血液涂片中以及在使用BAA进行的体外实验中,观察到了不同程度的棘皮细胞增多。口腔细胞,杯形细胞和球细胞是暴露于2-BE或体外暴露于BAA的大鼠的红细胞的主要形态特征。相比之下,与高达2.0 mM BAA一起孵育的人红细胞在大鼠红细胞中未观察到任何形态变化。体内2-丁氧基乙醇和体外BAA引起大鼠红细胞形态的相似变化,从而进一步证明了BAA在大鼠2-BE暴露的溶血作用中的主要作用。

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