Leukotriene B4 indicates lung injury and on-going inflammatory changes after severe trauma in a porcine long-term model

Background: Recognizing patients at risk for pulmonary complications (PC) is of high clinical relevance. Migration of polymorphonuclear leukocytes (PMN) to inflammatory sites plays an important role in PC, and is tightly
Background: Recognizing patients at risk for pulmonary complications (PC) is of high clinical relevance. Migration of polymorphonuclear leukocytes (PMN) to inflammatory sites plays an important role in PC, and is tightly regulated by specific chemokines including interleukin (IL)−8 and other mediators such as leukotriene (LT)B4. Previously, we have reported that LTB4 indicated early patients at risk for PC after trauma. Here, the relevance of LTB4 to indicating lung integrity in a newly established long-term porcine severe trauma model (polytrauma, PT) was explored.
Methods: mTwelve pigs (3 months old, 30 ± 5 kg) underwent PT including standardized femur fracture, lung contusion, liver laceration, hemorrhagic shock, subsequent resuscitation and surgical fracture fixation. Six animals served as controls (sham). After 72 h lung damage and inflammatory changes were assessed. LTB4 was determined in plasma before the experiment, immediately after trauma, and after 2, 4, 24 or 72 h. Bronchoalveolar lavage (BAL)-fluid was collected prior and after the experiment.
Results: Lung injury, local gene expression of IL-8, IL-1β, IL-10, IL-18 and PMN-infiltration into lungs increased significantly in PT compared with sham. Systemic LTB4 increased markedly in both groups 4 h after trauma. Compared with declined plasma LTB4 levels in sham, LTB4 increased further in PT after 72 h. Similar increase was observed in BAL-fluid after PT.
Conclusions: In a severe trauma model, sustained changes in terms of lung injury and inflammation are determined at day 3 post-trauma. Specifically, increased LTB4 in this porcine long-term model indicated a rapid inflammatory alteration both locally and systemically. The results support the concept of LTB4 as a biomarker for PC after severe trauma and lung contusion.
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Author:Philipp Störmann, Birgit Auner, Lukas Schimunek, Rafael Serve, Klemens Horst, Tim-Philipp Simon, Roman Pfeifer, Kernt Köhler, Frank Hildebrand, Sebastian Wutzler, Hans-Christoph Pape, Ingo Marzi, Borna Relja
URN:urn:nbn:de:hebis:30:3-447124
DOI:http://dx.doi.org/10.1016/j.plefa.2017.09.014
ISSN:1532-2823
ISSN:0952-3278
Parent Title (English):Prostaglandins, leukotrienes and essential fatty acids
Publisher:Harcourt
Place of publication:Burlington, Mass.
Document Type:Article
Language:English
Date of Publication (online):2017/11/02
Date of first Publication:2017/09/22
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2017/11/02
Tag:Biomarker; Inflammation; LTB4; Leukotriene; Lung failure; Trauma
Volume:127
Pagenumber:7
First Page:25
Last Page:31
Note:
© 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
HeBIS PPN:428739318
Institutes:Medizin
Dewey Decimal Classification:610 Medizin und Gesundheit
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell - Keine Bearbeitung 4.0

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