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2017 ; 7
(1
): 3491
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Andrographolide Ameliorates Inflammation and Fibrogenesis and Attenuates
Inflammasome Activation in Experimental Non-Alcoholic Steatohepatitis
#MMPMID28615649
Cabrera D
; Wree A
; Povero D
; Solís N
; Hernandez A
; Pizarro M
; Moshage H
; Torres J
; Feldstein AE
; Cabello-Verrugio C
; Brandan E
; Barrera F
; Arab JP
; Arrese M
Sci Rep
2017[Jun]; 7
(1
): 3491
PMID28615649
show ga
Therapy for nonalcoholic steatohepatitis (NASH) is limited. Andrographolide
(ANDRO), a botanical compound, has a potent anti-inflammatory activity due to its
ability to inhibit NF-?B. ANDRO has been also shown to inhibit the NLRP3
inflammasome, a relevant pathway in NASH. Our aim was to evaluate the effects of
ANDRO in NASH and its influence on inflammasome activation in this setting. Thus,
mice were fed a choline-deficient-amino-acid-defined (CDAA) diet with/without
concomitant ANDRO administration (1?mg/kg, 3-times/week). Also, we assessed serum
levels of alanine-aminotransferase (ALT), liver histology, hepatic triglyceride
content (HTC) and hepatic expression of pro-inflammatory, pro-fibrotic and
inflammasome genes. Inflammasome activation was also evaluated in fat-laden HepG2
cells. Our results showed that ANDRO administration decreased HTC and attenuated
hepatic inflammation and fibrosis in CDAA-fed mice. ANDRO treatment determined a
strong reduction in hepatic macrophage infiltration and reduced hepatic mRNA
levels of both pro-inflammatory and pro-fibrotic genes. In addition, mice treated
with ANDRO showed reduced expression of inflammasome genes. Finally, ANDRO
inhibited LPS-induced interleukin-1? expression through NF-?B inhibition in
fat-laden HepG2 cells and inflammasome disassembly. In conclusion, ANDRO
administration reduces inflammation and fibrosis in experimental NASH.
Inflammasome modulation by a NF-?B-dependent mechanism may be involved in the
therapeutic effects of ANDRO.