Serum Autotaxin Is a Useful Disease Progression Marker in Patients with Primary
Biliary Cholangitis
#MMPMID29802350
Joshita S
; Umemura T
; Usami Y
; Yamashita Y
; Norman GL
; Sugiura A
; Yamazaki T
; Fujimori N
; Kimura T
; Matsumoto A
; Igarashi K
; Yoshizawa K
; Ota M
; Tanaka E
Sci Rep
2018[May]; 8
(1
): 8159
PMID29802350
show ga
Autotaxin (ATX) is a secreted enzyme metabolized by liver sinusoidal endothelial
cells that has been associated with liver fibrosis. We evaluated serum ATX values
in 128 treatment-naïve, histologically assessed primary biliary cholangitis (PBC)
patients and 80 healthy controls for comparisons of clinical parameters in a
case-control study. The median ATX concentrations in controls and PBC patients of
Nakanuma's stage I, II, III, and IV were 0.70, 0.80, 0.87, 1.03, and 1.70?mg/L,
respectively, which increased significantly with disease stage (r?=?0.53,
P?0.0001) as confirmed by Scheuer's classification (r?=?0.43, P?0.0001). ATX
correlated with Wisteria floribunda agglutinin-positive Mac-2 binding protein
(M2BPGi) (r?=?0.51, P?0.0001) and fibrosis index based on four factors (FIB-4)
index (r?=?0.51, P?0.0001). While ALP and M2BPGi levels had decreased
significantly (both P?0.001) by 12 months of ursodeoxycholic acid treatment,
ATX had not (0.95 to 0.96?mg/L) (P?=?0.07). We observed in a longitudinal study
that ATX increased significantly (P?0.00001) over 18 years in an independent
group of 29 patients. Patients succumbing to disease-related death showed a
significantly higher ATX increase rate (0.05?mg/L/year) than did survivors
(0.02?mg/L/year) (P?0.01). ATX therefore appears useful for assessing disease
stage and prognosis in PBC.