首页> 外文期刊>The Journal of toxicological sciences >Effect of whole blood clotting time in rats with ionized hypocalcemia induced by rapid intravenous citrate infusion.
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Effect of whole blood clotting time in rats with ionized hypocalcemia induced by rapid intravenous citrate infusion.

机译:全血凝结时间对快速静脉滴注柠檬酸引起的离子性低钙血症大鼠的影响。

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Although the toxic effects of citrate including hemodynamic and cardiovascular changes result from a decrease in ionized calcium levels in serum due to chelating action, these effects of citrate on blood coagulation have not yet been fully clarified. The present study examines whether serum citrate and ionized calcium levels affect whole blood clotting time in rats using the test tube method in which citrate is administered by rapid intravenous infusion. Citrate was infused via the tail vein into 10 rats at 3, 4 or 5 mmol/kg/hr for 1 hr, and then whole blood clotting time, serum citrate and ionized calcium levels were determined. Whole blood clotting time did not significantly change at citrate infusion rates of 3 and 4 mmol/kg/hr. However, at 5 mmol/kg/hr, whole blood clotting time was significantly prolonged by a factor of 2.1 relative to the untreated group, when the serum citrate level was 10.03 +/- 1.39 mmol/l (59.0-fold higher than that in the untreated group) and the serum-ionized calcium level was 0.29 +/- 0.02 mmol/l (0.2-fold lower than that in the untreated group). These results suggest that whole blood clotting time is significantly prolonged in rats with severe ionized hypocalcemia.
机译:尽管柠檬酸盐的包括血液动力学和心血管变化在内的毒性作用是由于螯合作用降低了血清中的离子钙水平所致,但柠檬酸盐对凝血的这些作用尚未完全阐明。本研究使用通过静脉内快速输注施用柠檬酸盐的试管方法,检查血清柠檬酸盐和离子钙水平是否影响大鼠全血凝固时间。通过尾静脉以3、4或5 mmol / kg / hr的剂量将柠檬酸盐注入10只大鼠中1小时,然后测定全血凝固时间,血清柠檬酸盐和离子钙水平。在3和4 mmol / kg / hr的柠檬酸盐输注速度下,全血凝固时间没有明显变化。然而,当血清柠檬酸水平为10.03 +/- 1.39 mmol / l时,在5 mmol / kg / hr的条件下,全血凝固时间相对于未治疗组显着延长了2.1倍(比未处理组高59.0倍)。未治疗组)和血清离子钙水平为0.29 +/- 0.02 mmol / l(比未治疗组低0.2倍)。这些结果表明,严重电离性低钙血症大鼠的全血凝血时间显着延长。

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