Is there a circulating proteolysis-inducing factor during sepsis?

Is there a circulating proteolysis-inducing factor during sepsis?
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败血症期间是否存在循环蛋白水解诱导因子?

DOI:
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发表时间:
1990
影响因子:
--
通讯作者:
J. Fischer
J. Fischer
中科院分区:
--
文献类型:
--
作者:
P. Hasselgren;J. James;D. Benson;S. Li;J. Fischer

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在存在脓毒症大鼠血浆、重组白细胞介素1 α(rIL-1 α)或重组肿瘤坏死因子α(rTNF α)的情况下孵育进食或禁食72小时大鼠的肌肉,并分别通过测定酪氨酸和3-甲基组氨酸的释放来评估总蛋白和肌原纤维蛋白的分解。脓毒症血浆刺激总蛋白分解从72小时禁食大鼠的肌肉中的10%至20%,而肌原纤维蛋白分解不受影响。当脓毒症血浆被添加到肌肉从喂养大鼠,无论是酪氨酸,也不是3-甲基组氨酸的释放被改变。不同浓度的重组白细胞介素1 α或重组肿瘤坏死因子α不影响总蛋白或肌原纤维蛋白的分解。由于脓毒症血浆不刺激肌原纤维蛋白分解,脓毒症期间肌肉蛋白水解的循环因子的作用仍不清楚。
Muscles from fed or 72-hour fasted rats were incubated in the presence of plasma from septic rats, recombinant interleukin 1 alpha (rIL-1 alpha), or recombinant tumor necrosis factor alpha (rTNF alpha), and breakdown of total and myofibrillar protein was assessed by determining release of tyrosine and 3-methylhistidine, respectively. Septic plasma stimulated total protein breakdown in muscles from 72-hour fasted rats by 10% to 20%, while myofibrillar protein breakdown was not affected. When septic plasma was added to muscles from fed rats, neither tyrosine nor 3-methylhistidine release was altered. Various concentrations of recombinant interleukin 1 alpha or recombinant tumor necrosis factor alpha did not affect total or myofibrillar protein breakdown. Since septic plasma did not stimulate myofibrillar protein breakdown, the role of a circulating factor for muscle proteolysis during sepsis remains unclear.
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发表时间: 1988-02
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