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2017 ; 23
(23
): 4181-4190
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Anti-steatotic and anti-fibrotic effects of the KCa3 1 channel inhibitor,
Senicapoc, in non-alcoholic liver disease
#MMPMID28694658
Paka L
; Smith DE
; Jung D
; McCormack S
; Zhou P
; Duan B
; Li JS
; Shi J
; Hao YJ
; Jiang K
; Yamin M
; Goldberg ID
; Narayan P
World J Gastroenterol
2017[Jun]; 23
(23
): 4181-4190
PMID28694658
show ga
AIM: To evaluate a calcium activated potassium channel (KCa3.1) inhibitor
attenuates liver disease in models of non-alcoholic fatty liver disease (NAFLD).
METHODS: We have performed a series of in vitro and in vivo studies using the
KCa3.1 channel inhibitor, Senicapoc. Efficacy studies of Senicapoc were conducted
in toxin-, thioacetamide (TAA) and high fat diet (HFD)-induced models of liver
fibrosis in rats. Efficacy and pharmacodynamic effects of Senicapoc was
determined through biomarkers of apoptosis, inflammation, steatosis and fibrosis.
RESULTS: Upregulation of KCa3.1 expression was recorded in TAA-induced and high
fat diet-induced liver disease. Treatment with Senicapoc decreased palmitic
acid-driven HepG2 cell death. (P < 0.05 vs control) supporting the finding that
Senicapoc reduces lipid-driven apoptosis in HepG2 cell cultures. In animals fed a
HFD for 6 wk, co-treatment with Senicapoc, (1) reduced non-alcoholic fatty liver
disease (NAFLD) activity score (NAS) (0-8 scale), (2) decreased steatosis and (3)
decreased hepatic lipid content (Oil Red O, P < 0.05 vs vehicle). Randomization
of TAA animals and HFD fed animals to Senicapoc was associated with a decrease in
liver fibrosis as evidenced by hydroxyproline and Masson's trichrome staining (P
< 0.05 vs vehicle). These results demonstrated that Senicapoc mitigates both
steatosis and fibrosis in liver fibrosis models. CONCLUSION: These data suggest
that Senicapoc interrupts more than one node in progressive fatty liver disease
by its anti-steatotic and anti-fibrotic activities, serving as a double-edged
therapeutic sword.