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Different Effects of Plasma from Patients with Acute on Chronic Liver Failure on the Proliferation and Biotransformation Function of C3A Cells
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作者 Yu Chen Li-ming Fu +2 位作者 xiu-ying zhao Jun zhao Zhong-ping Duan 《国际感染病学(电子版)》 CAS 2012年第2期91-96,共6页
Objective To investigate the effects of plasma from patients with acute on chronic liver failure on the proliferation and biotransformation function of C3A cells in vitro,and provide experimental data for C3A cells to... Objective To investigate the effects of plasma from patients with acute on chronic liver failure on the proliferation and biotransformation function of C3A cells in vitro,and provide experimental data for C3A cells to be efficiently used in the bioartificial liver system.Methods C3A cells were incubated in 100%normal human plasma(NHP)and 100%abnormal plasma(AP)from patients with acute on chronic liver failure.Growth morphology of the two groups were observed under inverted microscope and scanning electron microscope.The method of methyl thiazolyl tetrazolium(MTT)was conducted for the proliferation activities of C3A cells.The cellular apoptosis rates were assessed by the flow cytometer.The biotransformation function of cells was evaluated through diazepam metabolic amount assay.The concentrations of epithelial growth factor(EGF),transforming growth factor-α(TGF-α)and interleukin-1(IL-1)were detected in plasma of the two groups.Results A:The proliferation activities of C3A cells incubated in 100%AP for 24,48,72,96 and 120 hours were significantly higher than that in 100%NHP(P<0.01).B:Observation under the inverted microscope indicated that the cells in 100%AP were growing faster than those in 100%NHP after cells attached to the plastic at24 and 48 hours.The same phenomena was observed under the scanning electronic microscope.C:The C3A cells cultured in both groups of plasma showed the same apoptosis rate at 48 hours and there was no statistical difference.D:The diazepam metabolic value of C3A cells incubated in 100%AP for 24,72 and 120 hours were lower than that in 100%NHP and were statistically different(P<0.01).E:The concentrations of TGF-α,EGF and IL-1 in AP were significantly higher than that in NHP(P<0.01).Conclusions Compared with normal human plasma,the plasma from patients with acute on chronic liver failure has more obvious effect to facilitate the proliferation of C3A cells,but also decreases partial biotransformation function of C3A cells. 展开更多
关键词 Liver failure PLASMA Cell culture PROLIFERATION Bioartificial liver
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温度与压力对聚氨酯弹性体黏弹性影响的分子模拟研究 被引量:3
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作者 程伟 王佰海 +3 位作者 王雯霏 王兵 赵秀英 高洋洋 《高分子学报》 SCIE CAS CSCD 北大核心 2023年第3期398-408,共11页
采用粗粒度分子动力学模拟方法研究了温度与压力对聚氨酯弹性体黏弹性的影响.结果显示,随着温度的上升,聚氨酯储能模量、损耗模量逐渐下降,而损耗因子逐渐上升.而压力对聚氨酯黏弹性的影响与温度正好相反,且损耗因子与压力几乎无关.随... 采用粗粒度分子动力学模拟方法研究了温度与压力对聚氨酯弹性体黏弹性的影响.结果显示,随着温度的上升,聚氨酯储能模量、损耗模量逐渐下降,而损耗因子逐渐上升.而压力对聚氨酯黏弹性的影响与温度正好相反,且损耗因子与压力几乎无关.随后采用相互作用能,相有序度参数和尺寸,约化相互作用能以及热交换能来揭示聚氨酯黏弹性的微观机理.在剪切过程中,相结构主要发生了变形,进而产生了更多的界面.同时随着温度上升或者压力下降,硬相和软相珠子间滑移变得容易,进而导致耗散能量逐渐下降. 展开更多
关键词 聚氨酯 温度 压力 黏弹性 分子动力学模拟
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