Review Article

The Effects of Obesity on Outcome in Preclinical Animal Models of Infection and Sepsis: A Systematic Review and Meta-Analysis

Table 3

Effect of obesity compared to controls on parameters of organ injury.

Author (year)Exp #ModelSite of infectionSignificant changes in organ injury comparing obese and nonobese groupsOverall effect of obesity on measure of organ injury

Single-strain bacteria models
Wan ’1612DIOINLung wet/dry ratio increased at 24 h with obesity
13DIOINLung wet/dry ratio increased at 24 and 96 h with obesity
Cecal ligation and puncture models
Tschop ’1014GenIPBUN as a marker of renal injury increased at 24 h with obesity
ALT as a marker of liver injury increased at 24 h with obesity
Kaplan ’1217DIOIPHistologic lung injury score increased at 6 h with obesity
Kaplan ’1619DIOIPALT as a marker of liver injury increased at 6 h with obesity
Lipopolysaccharide
Sakai ’1334DIOIPAST and liver histology score increased with obesity at 6 h
Fujiwara ‘1435DIOIPNo significant differences in lung septal thickness or W/D at 6 hNSD
36DIOIPNo significant differences in lung septal thickness or W/D at 6 hNSD
Single-strain virus models
Smith ‘0737DIOINNo significant difference in histologic lung injury scoreNSD
Milner ‘1342DIOPOHistologic lung injury increased at 5 d and BAL protein increased at 5 d and 6 d with obesity
Radigan ‘1443GenITBAL protein not significantly different at 4 dNSD
44GenITBAL protein significantly increased at 4 d with obesity
O’Brien45DIOINDecreased lung epithelial regeneration and increased BAL albumin at 3 d and 6 d with obesity
O’Brien46GenINDecreased lung epithelial regeneration and increased BAL albumin at 3 d and 6 d with obesity
Milner ‘1549DIOINBAL protein and albumin increased at 4 d and BAL protein increased at 8 d with obesity
51GenINBAL protein increased at 8 d with obesity

Exp: experiment; ALT: alanine aminotransferase; AST: aspartate aminotransferase; BAL: bronchoalveolar lavage; BUN: blood urea nitrogen; DIO: diet-induced obesity model; Gen: genetic model of obesity; NSD: no significant difference. Remaining studies did not report organ injury data.