Heparin-binding protein in ventilator-induced lung injury

被引：3
作者：
Tydén J. [1 ,6 ]
Larsson N. [2 ]
Lehtipalo S. [2 ]
Herwald H. [3 ]
Hultin M. [2 ]
Walldén J. [4 ]
Behndig A.F. [5 ]
Johansson J. [1 ]
机构：
[1] Department of Surgical and Perioperative Sciences, Anaesthesiology and Critical Care Medicine (Östersund), Umeå University, Umeå
[2] Department of Surgical and Perioperative Sciences, Anaesthesiology and Critical Care Medicine (Umeå), Umeå University, Umeå
[3] Department of Cell and Molecular Biology, Lund University, Lund
[4] Department of Surgical and Perioperative Sciences, Anaesthesiology and Critical Care Medicine (Sundsvall), Umeå University, Umeå
[5] Department of Public Health and Clinical Medicine, Division of Medicine, Umeå University, Umeå
[6] Anestesiläkaravdelningen, Östersund Hospital, Östersund
来源：
Intensive Care Medicine Experimental | / 6卷 / 1期
关键词：
HBP; Neutrophils; Pigs; Ventilator-induced lung injury;
D O I：
10.1186/s40635-018-0198-x
中图分类号：
学科分类号：
摘要：
Background: Although mechanical ventilation is often lifesaving, it can also cause injury to the lungs. The lung injury is caused by not only high pressure and mechanical forces but also by inflammatory processes that are not fully understood. Heparin-binding protein (HBP), released by activated granulocytes, has been indicated as a possible mediator of increased vascular permeability in the lung injury associated with trauma and sepsis. We investigated if HBP levels were increased in the bronchoalveolar lavage fluid (BALF) or plasma in a pig model of ventilator-induced lung injury (VILI). We also investigated if HBP was present in BALF from healthy volunteers and in intubated patients in the intensive care unit (ICU). Methods: Anaesthetized pigs were randomized to receive ventilation with either tidal volumes of 8 ml/kg (controls, n = 6) or 20 ml/kg (VILI group, n = 6). Plasma and BALF samples were taken at 0, 1, 2, 4, and 6 h. In humans, HBP levels in BALF were sampled from 16 healthy volunteers and from 10 intubated patients being cared for in the ICU. Results: Plasma levels of HBP did not differ between pigs in the control and VILI groups. The median HBP levels in BALF were higher in the VILI group after 6 h of ventilation compared to those in the controls (1144 ng/ml (IQR 359–1636 ng/ml) versus 89 ng/ml (IQR 33–191 ng/ml) ng/ml, respectively, p = 0.02). The median HBP level in BALF from healthy volunteers was 0.90 ng/ml (IQR 0.79–1.01 ng/ml) as compared to 1959 ng/ml (IQR 612–3306 ng/ml) from intubated ICU patients (p < 0.001). Conclusions: In a model of VILI in pigs, levels of HBP in BALF increased over time compared to controls, while plasma levels did not differ between the two groups. HBP in BALF was high in intubated ICU patients in spite of the seemingly non-harmful ventilation, suggesting that inflammation from other causes might increase HBP levels. © 2018, The Author(s).
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