HLA-DR Expression on Monocytes and Systemic Inflammation in Patients with Ruptured Abdominal Aortic Aneurysms
Overview
Authors
Affiliations
Introduction: Mortality from ruptured abdominal aortic aneurysms (RAAA) remains high. Severe systemic inflammation, leading to multi-organ failure, often occurs in these patients. In this study we describe the level of HLA-DR expression in a consecutive group of patients following surgery for RAAA and compare results between survivors and non-survivors. A similar comparison is made for IL-6, IL-10 levels and SOFA-scores.
Methods: This is a prospective observational study. Patients with RAAA were prospectively analyzed. Blood samples were collected on day 1, 3, 5, 7, 10 and 14. The fraction of CD-14 positive monocytes expressing HLA-DR was measured by flow-cytometry. Interleukin-6 and interleukin-10 levels were measured by ELISA.
Results: Thirty patients with a median age of 70 years were included. There were 27 (90%) men. Six patients died from multiple organ failure, all other patients survived. The Sequential Organ Failure Assessment (SOFA) scores were significantly higher in non-survivors on day 1 through 14. HLA-DR expression on monocytes was significantly lower on day 3, 5, 7, 10 and 14 in non-survivors. Interleukin-6 and IL-10 levels were significantly higher in non-survivors on day 1 and day 1 and 3 respectively.
Conclusions: HLA-DR expression on monocytes was decreased, especially in non-survivors. All patients with RAAA displayed a severe inflammatory and anti-inflammatory response with an increased production of IL-6 and IL-10. Poor outcome is associated with high levels of IL-6 and IL-10 and a high SOFA score in the first three days after surgery, while low levels of HLA-DR expression are observed from day three after RAAA repair.
Teng F, Tang Y, Lu Z, Chen Z, Guo Q Biomedicines. 2024; 12(6).
PMID: 38927386 PMC: 11200785. DOI: 10.3390/biomedicines12061179.
Bottomley M, Harden P, Wood K, Hester J, Issa F Front Immunol. 2022; 13:901273.
PMID: 35844527 PMC: 9283730. DOI: 10.3389/fimmu.2022.901273.
Houseman M, Huang M, Huber M, Staiger M, Zhang L, Hoffmann A Eur J Immunol. 2022; 52(9):1452-1463.
PMID: 35612261 PMC: 9544904. DOI: 10.1002/eji.202149735.
Luo W, Sun J, Tang H, Fu D, Hu Z, Zhou H Front Cardiovasc Med. 2021; 8:747467.
PMID: 34869652 PMC: 8632808. DOI: 10.3389/fcvm.2021.747467.
Score performance of SAPS 2 and SAPS 3 in combination with biomarkers IL-6, PCT or CRP.
Jahn M, Rekowski J, Janosi R, Kribben A, Canbay A, Katsounas A PLoS One. 2020; 15(9):e0238587.
PMID: 32881963 PMC: 7470390. DOI: 10.1371/journal.pone.0238587.