Corticosterone alone does not explain increased muscle proteolysis in septic rats.
Corticosterone alone does not explain increased muscle proteolysis in septic rats.
复制标题
单独使用皮质酮并不能解释脓毒症大鼠肌肉蛋白水解作用的增加。
DOI:
10.1016/0022-4804(90)90077-f
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发表时间:
1990
期刊:
影响因子:
--
通讯作者:
Fischer,JE
中科院分区:
文献类型:
--
作者:
Hall-Angerås,M;Angerås,U;Hasselgren,PO;Fischer,JE
The mediators and mechanisms of muscle proteolysis in sepsis are not fully known. We investigated the role of corticosterone in increased muscle proteolysis during sepsis in rats. In one series of experiments, plasma corticosterone and total and myofibrillar protein breakdown rates, determined in incubated extensor digitorum longus muscles as release of tyrosine and 3-methylhistidine, respectively, were measured 16 hr after sham operation (control) or cecal ligation and puncture (sepsis). In other experiments, corticosterone (10 mg/100 g body wt) was injected subcutaneously twice over 16 hr; thereafter, plasma hormone levels and muscle protein breakdown rates were determined. Plasma corticosterone was increased from 14 ± 1 μg/dl in control rats to 38 ± 8 μg/dl in septic rats and total and myofibrillar protein breakdown rates were increased by 99 and 326%, respectively, in muscles from septic rats. When administration of corticosterone resulted in plasma levels similar to those observed in septic rats, total or myofibrillar protein breakdown rates were not altered. The results suggest that corticosterone alone is not responsible for increased muscle proteolysis in septic rats. The data, however, do not rule out the possibility that glucocorticoids may be a cofactor to some other substance or substances in the induction of muscle proteolysis during sepsis.
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影响因子:
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作者:
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通讯作者:
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作者:
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DOI:
--
发表时间:
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期刊:
The Journal of biological chemistry
影响因子:
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DOI:
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发表时间:
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影响因子:
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