Different experimental multiple trauma models induce comparable inflammation and organ injury

Sci Rep. 2020 Nov 19;10(1):20185. doi: 10.1038/s41598-020-76499-z.

Abstract

Multiple injuries appear to be a decisive factor for experimental polytrauma. Therefore, our aim was to compare the inflammatory response and organ damage of five different monotrauma with three multiple trauma models. For this, mice were randomly assigned to 10 groups: Healthy control (Ctrl), Sham, hemorrhagic shock (HS), thoracic trauma (TxT), osteotomy with external fixation (Fx), bilateral soft tissue trauma (bsTT) or laparotomy (Lap); polytrauma I (PT I, TxT + HS + Fx), PT II (TxT + HS + Fx + Lap) and one multi-trauma group (MT, TxT + HS + bsTT + Lap). The inflammatory response and organ damage were quantified at 6 h by analyses of IL-6, IL-1β, IL-10, CXCL1, SAA1, HMGB1 and organ injury. Systemic IL-6 increased in all mono and multiple trauma groups, while CXCL1 increased only in HS, PT I, PT II and MT vs. control. Local inflammatory response was most prominent in HS, PT I, PT II and MT in the liver. Infiltration of inflammatory cells into lung and liver was significant in all multiple trauma groups vs. controls. Hepatic and pulmonary injury was prominent in HS, PT I, PT II and MT groups. These experimental multiple trauma models closely mimic the early post-traumatic inflammatory response in human. Though, the choice of read-out parameters is very important for therapeutic immune modulatory approaches.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Chemokine CXCL1 / metabolism
  • Disease Models, Animal
  • Gene Expression
  • HMGB1 Protein / metabolism
  • Inflammation / etiology*
  • Interleukin-1beta / metabolism
  • Interleukin-6 / metabolism
  • Liver / pathology
  • Liver / physiology
  • Lung / pathology
  • Lung / physiology
  • Male
  • Mice, Inbred C57BL
  • Multiple Trauma / etiology*
  • Serum Amyloid A Protein / metabolism
  • Shock, Hemorrhagic / etiology
  • Thoracic Injuries / etiology

Substances

  • Chemokine CXCL1
  • Cxcl1 protein, mouse
  • HMGB1 Protein
  • HMGB1 protein, mouse
  • IL1B protein, mouse
  • Interleukin-1beta
  • Interleukin-6
  • SAA1 protein, human
  • Serum Amyloid A Protein
  • interleukin-6, mouse