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目的:探讨川芎嗪、当归注射液对失血性休克大鼠血液动力学的影响。方法:颈动脉放血复制大鼠失血性休克模型,通过微循环观察、器官血流和血液流变学测定方法,观察川芎嗪、当归注射液对失血性休克大鼠血液动力学的影响。结果:失血性休克时,微循环明显障碍,主要表现为微血流变慢和血细胞聚集;经川芎嗪、当归注射液治疗后,微循环改善,血粘度、血小板粘附率和聚集率降低,器官微区血流量增加,与NS组比较有显著性差异(P<0.05)。结论:川芎嗪、当归注射液能明显改善失血性休克大鼠微循环障碍,降低血小板聚集率,增加器官血液灌流量。 相似文献
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Ju-li Fan Xian-guo Xu Shao-zhi Zhang Fa-ming Zhu Guang-ming Chen Li-xing Yan 《浙江大学学报(A卷英文版)》2009,10(5):697-703
A rehydration process for freeze-dried human platelets was studied on 1 ml of samples. The effects of prehydration duration, prehydration temperature, an rehydration solution on the recovery rate, mean platelet volume （MPV）, and platelet distribution width （PDW） were investigated. The mass changes during the prehydration process were also studied. Three prehydration durations： 0, 1.5, and 3.5 h, and two rehydration solutions： platelet-poor plasma and phosphate-buffered saline （PBS）, were tested. It was found that： （1） the prehydration was of significance; （2） 1.5 h of prehydration had better effects than 3.5 h of prehydration; （3） as a rehydration solution, the platelet-poor plasma behaved better than the PBS. The impacts of prehydration duration and temperature on the results were studied. There was almost no difference between 35 and 37 ℃. Among all the prehydration durations tested, 15, 30, 60, 90, and 120 min, the best result was achieved with the time duration of 15 min. The weights of prehydrated platelets at the end of each test were measured and the water contents were calculated. After 15 min ofprehydration, the water contents in the samples were about （4.8±0.01）% and （5.27±0.29）% （w/w） corresponding to the conditions of 35 and 37 ℃, respectively. These results will be helpful for further studies on the freeze-drying of mammalian cells. 相似文献
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Rashmi Raghuvanshi M. Chandra P. C. Misra M. K. Misra 《Indian journal of clinical biochemistry : IJCB》2005,20(1):26-29
Platelets play important role in precipitating ischaemic myocardial syndromes in many ways. One of the consequences of ischaemic
diseases is excessive generation of oxygen derived free radicals that have numerous pathophysiological consequences. Platelet
pro-oxidant enzyme, xanthine oxidase is one of the sources of generation of free radicals. In the present paper, we report
the effect of administration of vitamin E along with aspirin on the levels of platelet xanthine oxidase and extent of free
radical mediated damage in the patients reperfused after myocardial infarction.
Our findings show that administration of 400 mg. vitamin E for six days along with 80 mg. aspirin has an excellent anti-oxidant
effect as evidenced by reduced platelet xanthine oxidase activity and lowering of malondialdehdye (MDA) levels which is an
index of the extent of free radical mediated damage. 相似文献
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