PMID- 33008300 OWN - NLM STAT- MEDLINE DCOM- 20210514 LR - 20210514 IS - 1471-230X (Electronic) IS - 1471-230X (Linking) VI - 20 IP - 1 DP - 2020 Oct 2 TI - Peritumoral ductular reaction can be a prognostic factor for intrahepatic cholangiocarcinoma. PG - 322 LID - 10.1186/s12876-020-01471-0 [doi] LID - 322 AB - BACKGROUND: Peritumoral ductular reaction (DR) was reported to be related to the prognosis of combined hepatocellular-cholangiocarcinoma and hepatocellular carcinoma. Non-mucin-producing intrahepatic cholangiocarcinoma (ICC) which may be derived from small bile duct cells or liver progenitor cells (LPCs) was known to us. However, whether peritumoral DR is also related to non-mucin-producing ICCs remains to be investigated. METHODS: Forty-seven patients with non-mucin-producing ICC were eventually included in the study and clinicopathological variables were collected. Immunohistochemical analysis and immunofluorescence staining for cytokeratin 19, proliferating cell nuclear antigen, and alpha-smooth muscle actin were performed in tumor and peritumor liver tissues. RESULTS: A significant correlation existed between peritumoral DR and local inflammation and fibrosis. (r = 0.357, 95% CI, 0.037-0.557; P = 0.008 and r = 0.742, 95% CI, 0.580-0.849; P < 0.001, respectively). Patients with obvious peritumoral DR had high recurrence rate (81.8% vs 56.0%, P = 0.058) and poor overall and disease-free survival time (P = 0.01 and P = 0.03, respectively) comparing with mild peritumoral DR. Compared with the mild peritumoral DR group, the proliferation activity of LPCs/ cholangiocytes was higher in obvious peritumoral DR, which, however, was not statistically significant. (0.43 +/- 0.29 vs 0.28 +/- 0.31, P = 0.172). Furthermore, the correlation analysis showed that the DR grade was positively related to the portal/septalalpha-SMA level (r = 0.359, P = 0.001). CONCLUSIONS: Peritumoral DR was associated with local inflammation and fibrosis. Patients with non-mucin-producing ICC having obvious peritumoral DR had a poor prognosis. Peritumoral DR could be a prognostic factor for ICC. However, the mechanism should be further investigated. FAU - Shen, Zhenyang AU - Shen Z AD - Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. FAU - Xiao, Jingbo AU - Xiao J AD - Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. FAU - Wang, Junjun AU - Wang J AD - Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. FAU - Lu, Lungen AU - Lu L AD - Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. FAU - Wan, Xinjian AU - Wan X AD - Department of Gastroenterology, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. FAU - Cai, Xiaobo AU - Cai X AD - Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. caixiaobo1979@hotmail.com. LA - eng GR - 2018ZX09201016/National Science and Technology Major Special Project for New Drug Development/ PT - Journal Article DEP - 20201002 PL - England TA - BMC Gastroenterol JT - BMC gastroenterology JID - 100968547 SB - IM MH - *Bile Duct Neoplasms MH - Bile Ducts, Intrahepatic MH - *Cholangiocarcinoma MH - Humans MH - *Liver Neoplasms MH - Neoplasm Recurrence, Local MH - Prognosis PMC - PMC7532600 OTO - NOTNLM OT - Ductular reaction OT - Intrahepatic cholangiocarcinoma OT - Peritumoral OT - Prognosis COIS- The authors declare that they have no competing interests. EDAT- 2020/10/04 06:00 MHDA- 2021/05/15 06:00 PMCR- 2020/10/02 CRDT- 2020/10/03 05:20 PHST- 2020/04/30 00:00 [received] PHST- 2020/09/25 00:00 [accepted] PHST- 2020/10/03 05:20 [entrez] PHST- 2020/10/04 06:00 [pubmed] PHST- 2021/05/15 06:00 [medline] PHST- 2020/10/02 00:00 [pmc-release] AID - 10.1186/s12876-020-01471-0 [pii] AID - 1471 [pii] AID - 10.1186/s12876-020-01471-0 [doi] PST - epublish SO - BMC Gastroenterol. 2020 Oct 2;20(1):322. doi: 10.1186/s12876-020-01471-0.