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Effects of fish oil-based lipid emulsion on inflammation and kidney injury in mice subjected to unilateral hind limb ischemia/reperfusion

机译:鱼油脂质乳液对单侧后肢缺血/再灌注小鼠炎症和肾损伤的影响/再灌注

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摘要

This study investigated the effects of a fish oil-based lipid emulsion (FO) on local skeletal muscle and remote renal damage at 72 h post-reperfusion in a murine model of hind limb ischemia-reperfusion (IR) injury. Mice were assigned to 1 sham group and 3 IR groups. The IR groups were treated daily with either saline or FO from 3 days prior to limb ischemia till 3 days after reperfusion. Limb IR was induced by applying a 4.5-oz orthodontic rubber band above the left greater trochanter for 120 min followed by band-released reperfusion for 72 h. Mice were then sacrificed to harvest blood, muscle, and kidney for analysis. The results showed that IR injury led to upregulation of pro-inflammatory monocytes in blood, infiltration of leukocytes into injured muscle, and over expression of pro-inflammatory genes in muscle and kidney tissues. Supplementing FO either before or after IR injury alleviated IR-induced inflammatory gene expressions in muscle and kidney tissues. Furthermore, FO given after IR injury reduced circulating pro-inflammatory monocytes, limited muscle leukocytic infiltration, and improved renal histology. These results suggest that FO may protect the muscles from IR injury. FO given after IR injury can better downregulate the inflammation seen in IR-induced remote kidney injury.
机译:本研究研究了鱼油脂质乳液(FO)对局部骨骼肌和远程肾损伤的影响,在后肢缺血再灌注(IR)损伤的鼠模型中的72小时再次再灌注。将小鼠分配给1个假组和3枚红外组。每天用盐或戊酸盐在再灌注后3天,每天用盐或佛罗里林治疗IR组。通过将4.5盎司正畸橡胶带施加在左上更大的脱叶上方的4.5盎司正畸橡胶条带进行120分钟,然后释放出72小时的带释放再灌注。然后处死小鼠以进行血液,肌肉和肾脏进行分析。结果表明,红外损伤导致血液中的促炎单核细胞,白细胞浸润到受伤的肌肉中,以及肌肉和肾组织中促炎基因的表达。在IR损伤中补充至免疫肌肉和肾组织中的IR诱导的IR诱导的炎症基因表达。此外,在红外损伤后给出循环促炎单核细胞,有限的肌肉白细胞浸润,以及改善的肾组织学。这些结果表明FO可以保护肌肉免受IR损伤。在IR损伤后给出的FO可以更好地下调IR诱导的远程肾损伤中所见的炎症。

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