Mesenteric ischemia-reperfusion injury up-regulates certain CC, CXC, and XC chemokines and results in multi-organ injury in a time-dependent manner

Randeep S. Jawa, Erin Quist, Craig W. Boyer, Valerie K. Shostrom, David W Mercer

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Introduction: Trauma patients who develop multi-organ dysfunction have increased systemic levels of chemotactic cytokines. Ischemia-reperfusion (IR) injury to the gut may play a role. The purpose of this study was to examine chemokine production in a mouse model of mesenteric IR injury. Given the pre-eminent role of the neutrophil, there has been much investigation of the CXC chemokines, but very limited research on the CC and XC chemokines. We hypothesized that intestinal IR injury would induce remote organ injury and enhance serum CC and XC chemokine levels. Methods: Fasted female C57BL6 mice were anesthetized prior to laparotomy. In IR animals, the superior mesenteric artery (SMA) was occluded for 30, 45, or 75 min, while controls underwent sham laparotomy, n = 5-7 per group. After the indicated time point, the incision was closed and the mouse was allowed to recover for six hours. Following euthanasia, serum levels of 15 chemokines (10 CC, 4 CXC, and 1 XC) were assessed and histopathologic analyses performed. Results: Seventy-five minutes of SMA occlusion was the key time frame for significant serum cytokine level up-regulation, intestinal and remote organ injury, and neutrophil influx into tissues. With 75 min of intestinal ischemia, significantly elevated serum levels, as compared to shams, were noted for seven CC chemokines: MCP-1, MCP-3, MIP-1β, MIP-3β, eotaxin, MDC, and RANTES. Levels of the XC chemokine lymphotactin also increased. Levels of MIP-2, IP-10, and KC/GRO (CXC chemokines) rose significantly. MIP-1α levels were only significantly increased at 45 min IR. We did not find any significant IR injury-induced changes in levels of MCP-5, MIP-1γ, or GCP-2, at any ischemia time frame. Serum levels of IL-6 correspondingly increased significantly with longer ischemia times. Conclusions: The novel finding of this study is the demonstration of significant systemic increases in the CC chemokines eotaxin, MCP-3, MDC, MIP-3β in a time-dependent manner, along with tissue injury. The data suggest a complex response to IR injury whereby chemokines that are active on a variety of leukocytes may play a role in inducing local and remote tissue injury.

Original languageEnglish (US)
Pages (from-to)148-156
Number of pages9
JournalEuropean Cytokine Network
Volume24
Issue number4
DOIs
StatePublished - Jan 1 2013

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Keywords

  • Chemokine
  • Cytokine
  • Ischemia
  • Ischemia-reperfusion
  • Reperfusion

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Clinical Biochemistry

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