Liver elasticity measurement before and after biliary drainage in patients with obstructive jaundice: a prospective cohort studya prospective cohort study

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Background:
Obstructive jaundice has been reported to influence liver elasticity, independent of liver fibrosis. The aim of our prospective study was to evaluate the changes in liver elasticity, before and after biliary drainage, in patients with obstructive jaundice, and to evaluate the correlation between elasticity measures and serum markers of liver fibrosis.

Methods:
This is a prospective cohort study of 20 patients with obstructive jaundice. Liver elasticity was assessed by Transient Elastography (TE) and Virtual Touch™ Quantification (VTQ). Serum total bilirubin (T-Bil) level was measured before biliary drainage (Day 0), with measures repeated at 2 days (Day 2) and 7 days (Day 7) after biliary drainage. Serum levels of the following markers of liver fibrosis were also obtained on Day 0 and Day 7: hyaluronic acid (HA), procollagen-III-peptide (P-III-P).

Results:
T-Bil, TE, and VTQ for the left (VTQ-L) and right (VTQ-R) lobes of the liver were all elevated before biliary drainage, with respective levels, measured at Day 0, of 11.9 ± 1.5 mg/dl, 12.1 ± 0.9 kPa, 2.23 ± 0.10 m/s, and 1.85 ± 0.10 m/s. All values decreased on Day 7 after drainage: T-Bil, 4.7 ± 1.0 mg/dl (P < 0.001); TE, 7.6 ± 0.6 kPa (P < 0.001); VTQ-L, 1.53 ± 0.08 m/s (P < 0.001); and VTQ-R, 1.30 ± 0.05 m/s (P < 0.001). Similar changes were observed in serum markers of liver fibrosis. Liver elasticity measures correlated with serum levels of T-Bil, P-III-P, and HA (r = 0.35-0.67, P < 0.001).

Conclusions:
This study confirmed decreases in liver elasticity, measured by TE and VTQ, after biliary drainage. Measures of liver elasticity correlated to levels of T-Bil and serum markers of liver fibrosis. (UMIN ID: UMIN00001284313).

Trial registration:
Registration number: University Hospital Medical Information Network (UMIN) Clinical Trials Registry (UMIN ID: UMIN00001284313); Registration date: 2014-01-14.

Keywords:
Liver Elasticity, Obstructive jaundice, Biliary drainage, Transient elastography, Virtual Touch™ Quantification, Liver fibrosis, Hyaluronic acid, Procollagen-III-peptide

Autoři: Kimitoshi Kubo† ¹; Hiroshi Kawakami† ^1,2*; Masaki Kuwatani ³; Mutsumi Nishida ⁴; Kazumichi Kawakubo ⁵; Shuhei Kawahata ¹; Yoko Taya ¹; Yoshimasa Kubota ^1,2; Toraji Amano ⁶; Hiroki Shirato ⁷; Naoya Sakamoto ⁵
Působiště autorů: Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Hokkaido, Japan. ¹; Department of Gastroenterology and Hepatology, Center for Digestive Disease, University of Miyazaki, 200 Kihara, Kiyotake-cho, Miyazaki City 889-1 92, Japan. ²; Division of Endoscopy, Hokkaido University Hospital, Sapporo, Hokkaido, Japan. ³; Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Hokkaido, Japan. ⁴; Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan. ⁵; Clinical Research and Medical Innovation Center, Hokkaido University Hospital, Sapporo, Hokkaido, Japan. ⁶; Department of Radiology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan. ⁷
Vyšlo v časopise: BMC Gastroenterology 2016, 16:65
Kategorie: Research article
prolekare.web.journal.doi_sk: https://doi.org/10.1186/s12876-016-0479-3

© 2016 The Author(s).
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
The electronic version of this article is the complete one and can be found online at: http://bmcgastroenterol.biomedcentral.com/articles/10.1186/s12876-016-0479-3

Souhrn

Trial registration:
Registration number: University Hospital Medical Information Network (UMIN) Clinical Trials Registry (UMIN ID: UMIN00001284313); Registration date: 2014-01-14.

Keywords:
Liver Elasticity, Obstructive jaundice, Biliary drainage, Transient elastography, Virtual Touch™ Quantification, Liver fibrosis, Hyaluronic acid, Procollagen-III-peptide

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