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2018 ; 9
(51
): 29574-29586
Nephropedia Template TP
gab.com Text
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English Wikipedia
Fibrosis in metastatic lymph nodes is clinically correlated to poor prognosis in
colorectal cancer
#MMPMID30038705
Ikuta D
; Miyake T
; Shimizu T
; Sonoda H
; Mukaisho KI
; Tokuda A
; Ueki T
; Sugihara H
; Tani M
Oncotarget
2018[Jul]; 9
(51
): 29574-29586
PMID30038705
show ga
BACKGROUND: Tumor microenvironment including fibrosis has a pivotal role in
cancer growth and distant metastasis. Fibrosis is a known risk factor for
carcinogenesis, but its biological role in disease invasion and metastasis in
colorectal cancer (CRC) remains unclear. In particular, there is no report on how
fibrosis of metastatic lymph nodes (MLNs) in CRC contributes to prognosis.
METHODS: We reviewed 94 colorectal adenocarcinoma patients with MLNs who
underwent colectomy. Both the primary tumors and MLNs were analyzed for
alpha-smooth muscle actin (?-SMA) expression and collagen deposition. RESULTS:
Higher ?-SMA expression and collagen deposition in MLNs were associated with
significantly shorter relapse-free survival and overall survival in CRC patients.
?-SMA expression in MLNs (HR, 1.53; p = 0.034) was independent predictive factor
of overall survival in multivariate Cox proportional hazards regression analysis
of clinicopathological factors. In the Stage III patient subgroup, ?-SMA
expression in MLNs was a strong prognostic marker (HR, 3.01; p = 0.006). On the
other hand, higher ?-SMA expression and collagen deposition in primary tumors
were associated with short overall survival, but they were not significant
factors in multivariate Cox regression analyses. In MLNs, the podoplanin signals
co-localized with ?-SMA expression and were confirmed by the dual
immunofluorescence staining, implying that the MLN stromal cells were
fibroblastic reticular cells. CONCLUSION: Both high collagen deposition and high
?-SMA expression in MLNs predicted poor prognosis in CRC.