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2017 ; 15
(1
): 96
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Experimental approach to IGF-1 therapy in CCl(4)-induced acute liver damage in
healthy controls and mice with partial IGF-1 deficiency
#MMPMID28472963
Morales-Garza LA
; Puche JE
; Aguirre GA
; Muñoz Ú
; García-Magariño M
; De la Garza RG
; Castilla-Cortazar I
J Transl Med
2017[May]; 15
(1
): 96
PMID28472963
show ga
BACKGROUND: Cell necrosis, oxidative damage, and fibrogenesis are involved in
cirrhosis development, a condition in which insulin-like growth factor 1 (IGF-1)
levels are diminished. This study evaluates whether the exogenous administration
of low doses of IGF-1 can induce hepatoprotection in acute carbon tetrachloride
(CCl(4))-induced liver damage compared to healthy controls (Wt Igf (+/+)).
Additionally, the impact of IGF-1 deficiency on a damaged liver was investigated
in mice with a partial deficit of this hormone (Hz Igf1 (+/-)). METHODS: Three
groups of 25 ± 5-week-old healthy male mice (Wt Igf (+/+)) were included in the
protocol: untreated controls (Wt). Controls that received CCl(4) (Wt + CCl(4))
and Wt + CCl(4) were treated subcutaneously with IGF-1 (2 µg/100 g body
weight/day) for 10 days (Wt + CCl(4) + IGF1). In parallel, three IGF-1-deficient
mice (Hz Igf1 (+/-)) groups were studied: untreated Hz, Hz + CCl(4), and
Hz + CCl(4) + IGF-1. Microarray and real-time quantitative polymerase chain
reaction (RT-qPCR) analyses, serum aminotransferases levels, liver histology, and
malondialdehyde (MDA) levels were assessed at the end of the treatment in all
groups. All data represent mean ± SEM. RESULTS: An altered gene coding expression
pattern for proteins of the extracellular matrix, fibrosis, and cellular
protection were found, as compared to healthy controls, in which IGF-1 therapy
normalized in the series including healthy mice. Liver histology showed that
Wt + CCl(4) + IGF1 mice had less oxidative damage, fibrosis, lymphocytic
infiltrate, and cellular changes when compared to the Wt + CCl(4). Moreover,
there was a correlation between MDA levels and the histological damage score
(Pearson's r = 0.858). In the IGF-1-deficient mice series, similar findings were
identified, denoting a much more vulnerable hepatic parenchyma. CONCLUSIONS: IGF1
treatment improved the biochemistry, histology, and genetic expression of
pro-regenerative and cytoprotective factors in both series (healthy and
IGF-1-deficient mice) with acute liver damage, suggesting that low doses of
IGF-1, in acute liver damage, could be a feasible therapeutic option.
|Animals
[MESH]
|Body Weight
[MESH]
|Carbon Tetrachloride
[MESH]
|Cell Death
[MESH]
|Gene Expression Regulation
[MESH]
|Insulin-Like Growth Factor I/*deficiency/metabolism/*therapeutic use
[MESH]