BML-111,一种脂氧素受体激动剂,可减轻大鼠呼吸机相关性肺损伤。

BML-111, a lipoxin receptor agonist, attenuates ventilator-induced lung injury in rats.

机构信息

Department of Critical Care Medicine, Institute of Anesthesia and Critical Care, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

出版信息

Shock. 2014 Apr;41(4):311-6. doi: 10.1097/SHK.0000000000000104.

Abstract

Mechanical ventilation can cause structural and functional disturbances in the lung termed ventilator-induced lung injury (VILI). The aim of this study was to evaluate whether BML-111, a lipoxin receptor agonist, could attenuate VILI. Following induction of anesthesia and tracheostomy, Sprague-Dawley rats were ventilated with low tidal volume (6 mL/kg) or high tidal volume (20 mL/kg, HVT) for 4 h. Some rats subjected to HVT ventilation received BML-111 or vehicle (saline) by intraperitoneal injection. Some rats subjected to HVT and BML-111(1 mg/kg) received BOC-2 (a FPR2/ALX antagonist) intraperitoneally 30 min before BML-111. Sham rats were tracheotomized without ventilation. Treatment with BML-111 attenuated VILI, as evidenced by improved oxygenation and reduced histological injury compared with HVT-induced lung injury. BML-111 decreased indices of inflammation such as interleukin 1β, interleukin 6, tumor necrosis factor α, and bronchoalveolar lavage neutrophil infiltration. Administration with BML-111 suppressed the decrement of the nuclear factor κB (NF-κB) inhibitor IκB-α, diminished NF-κB activation, and reduced activation of mitogen-activated protein kinase in VILI. This study indicates that BML-111 attenuated VILI via a NF-κB and mitogen-activated protein kinase dependent mechanism. BML-111 may be a promising strategy for alleviation of VILI in patients subjected to mechanical ventilation.

摘要

机械通气可导致肺结构和功能障碍,称为呼吸机诱导性肺损伤(VILI)。本研究旨在评估脂氧素受体激动剂 BML-111 是否可减轻 VILI。在麻醉和气管切开诱导后,Sprague-Dawley 大鼠接受低潮气量(6 mL/kg)或大潮气量(20 mL/kg,HVT)通气 4 h。一些接受 HVT 通气的大鼠接受腹腔注射 BML-111 或载体(生理盐水)。一些接受 HVT 和 BML-111(1 mg/kg)的大鼠在接受 BML-111 前 30 分钟接受腹腔注射 BOC-2(FPR2/ALX 拮抗剂)。假手术大鼠仅行气管切开而不进行通气。与 HVT 诱导的肺损伤相比,BML-111 治疗可改善氧合并减轻组织学损伤,从而减轻 VILI。BML-111 降低了白细胞介素 1β、白细胞介素 6、肿瘤坏死因子α和支气管肺泡灌洗中性粒细胞浸润等炎症指标。BML-111 抑制核因子 κB(NF-κB)抑制剂 IκB-α的减少,减弱 NF-κB 激活,并减少 VILI 中丝裂原激活蛋白激酶的激活。本研究表明,BML-111 通过 NF-κB 和丝裂原激活蛋白激酶依赖的机制减轻 VILI。BML-111 可能是机械通气患者减轻 VILI 的有前途的策略。

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