Ischemic preconditioning and remote ischemic preconditioning provide combined protective effect against ischemia/reperfusion injury

• DOI: 10.1016/j.lfs.2016.02.077
• Publication Date: 2016-02-25T00:51:54Z
• Authors: Ding-Yang Li; Xiao-Ju Shi; Wei Li; Xiao-Dong Sun; Guang-Yi Wang
• Keywords: Male; 0303 health sciences; CD11 Antigens; Tumor Necrosis Factor-alpha; Liver Diseases; Receptors, IgG; Survival Analysis; Liver Transplantation; 3. Good health; Mice, Inbred C57BL; Mice; 03 medical and health sciences; Malondialdehyde; Reperfusion Injury; Leukocytes; Animals; Ischemic Preconditioning

Our objective was to compare the protective efficacy of ischemic preconditioning (IPC) and remote ischemic preconditioning (RIPC) against liver ischemia/reperfusion injury (IRI) and to evaluate their combined protective effect in mouse liver transplantation (MLT).Mice were randomly allocated to sham, IPC, RIPC, or IPC+RIPC groups. The animals were sacrificed at 2h, 24h, and 3 days after reperfusion. Blood samples were collected to evaluate alanine aminotransferase, TNF-α, and innate immune response. Liver tissue samples were obtained for histological evaluation, terminal deoxynucleotidyltransferased UTP nick end labeling, malondialdehyde (MDA) assay.Mice given preconditioning measures had significantly lower increase in transaminase, TNF-α expression, MDA formation, liver injury scores, and apoptosis index at 2h, 24h and 3 days after liver transplantation. The percentages of CD11b(+), CD11b(+)CD16/32(+) and CD11b(+) CD16/32(high) in white blood cells at 3 days after MLT were significantly lower than in the sham group. The results of factorial analysis demonstrated no synergistic effect for IPC and RIPC, except for MDA formation 2h after reperfusion (p=0.038).Based on the synergistic and addictive effect on liver IRI induced by MLT between IPC and RIPC, the study suggested ways in which combined preconditionings could be elicited in patients undergoing planned procedures complicated by IRI to support better outcomes.