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2016 ; 310
(ä): 129-139
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A mouse model of alcoholic liver fibrosis-associated acute kidney injury
identifies key molecular pathways
#MMPMID27641628
Furuya S
; Chappell GA
; Iwata Y
; Uehara T
; Kato Y
; Kono H
; Bataller R
; Rusyn I
Toxicol Appl Pharmacol
2016[Nov]; 310
(ä): 129-139
PMID27641628
show ga
Clinical data strongly indicate that acute kidney injury (AKI) is a critical
complication in alcoholic hepatitis, an acute-on-chronic form of liver failure in
patients with advanced alcoholic fibrosis. Development of targeted therapies for
AKI in this setting is hampered by the lack of an animal model. To enable
research into molecular drivers and novel therapies for fibrosis- and
alcohol-associated AKI, we aimed to combine carbon tetrachloride (CCl(4))-induced
fibrosis with chronic intra-gastric alcohol feeding. Male C57BL/6J mice were
administered a low dose of CCl(4) (0.2ml/kg 2× week/6weeks) followed by alcohol
intragastrically (up to 25g/kg/day for 3weeks) and with continued CCl(4). We
observed that combined treatment with CCl(4) and alcohol resulted in severe liver
injury, more pronounced than using each treatment alone. Importantly, severe
kidney injury was evident only in the combined treatment group. This mouse model
reproduced distinct pathological features consistent with AKI in human alcoholic
hepatitis. Transcriptomic analysis of kidneys revealed profound effects in the
combined treatment group, with enrichment for damage-associated pathways, such as
apoptosis, inflammation, immune-response and hypoxia. Interestingly, Havcr1 and
Lcn2, biomarkers of AKI, were markedly up-regulated. Overall, this study
established a novel mouse model of fibrosis- and alcohol-associated AKI and
identified key mechanistic pathways.