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Updated: Apr 27, 2026
Microvascular Perfusion Monitored by Laser Speckle Contrast Imaging during Renal Ischemia-Reperfusion Injury in Mice
Published on: February 27, 2026
Laser speckle contrast imaging for assessment of abdominal visceral microcirculation in acute peritonitis: does
Chao Ding1, Jianan Ren1, Bo Zhou1
1Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, China.
Objective:
It is believed that the microcirculation of multiple organs is impaired during acute peritonitis, however whether distinct susceptibilities of visceral microvasculature exist is still unknown. The present study aims to verify whether the microcirculatory alterations occur sequentially among multiple abdominal viscera during acute peritonitis.
Materials And Methods:
Acute peritonitis was achieved on 29 Sprague-Dawley rats through colon ascendens stent peritonitis (CASP) model. With laser speckle contrast imaging (LSCI), the microcirculation of the liver, ileum and renal cortex was monitored in each rat at baseline before CASP sepsis and continued monitoring at 4h, 8h, or 12h after the surgery. Another 9 rats served for sham operation. One-way analysis of variance with a post hoc Dunnett's test was used for analysis.
Results:
The ileum microcirculation was impaired earliest from 342.1±61.0 laser speckle perfusion unit (LSPU) at baseline to 271.7±74.0 LSPU at 4h (P<0.05), while the decline of renal microcirculation was not obvious until 8h after peritonitis (289.1±111.2 vs 376.2±53.4, P<0.05). However hepatic microcirculation was not significantly changed during 12h of observation period.
Conclusion:
The microcirculation of various viscera has shown distinct susceptibilities to acute peritonitis: the ileum is more susceptible than the kidney, while the hepatic microcirculation seems to be the most resistant to peritonitis.
