Micro-fragmented fat injection reduces sepsis-induced acute inflammatory response in a mouse model

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Severe sepsis has a high mortality rate. There is increasing evidence that human mesenchymal stem cells possess immunomodulatory properties in sepsis, particularly those from adipose tissue. We hypothesised that micro-fragmented human fat, obtained with minimal alteration of the stromal vascular niche, attenuates the inflammatory response and improves outcome in a murine model of sepsis.
Micro-fragmented fat, lipoaspirate, or saline was administered intraperitoneally 2 h after caecal ligation and puncture (CLP) in C57Bl/6RJ ketamine–xylazine anaesthetised mice. The primary endpoint was the inflammatory score. Secondary endpoints included survival, physiological, histological, and biological parameters.
In CLP mice, micro-fragmented fat administration significantly decreased the median (range) inflammatory score compared with saline [17 (14–20) vs 9 (8–12), P=0.006 …


A Bouglé, P Rocheteau, M Hivelin, A Haroche, D Briand, C Tremolada, J Mantz, F Chrétien


British Journal of Anaesthesia