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[Gut-liver axis in inflammatory bowel disease. A retrospective study].

Abstract：

INTRODUCTION:Examination of the gut-liver axis came into the spotlight worldwide. Liver enzyme elevations are commonly seen in patients with inflammatory bowel disease (IBD), which is a diagnostic challenge in everyday clinical practice. Liver and biliary diseases are common extra-intestinal manifestations in Crohn's disease and ulcerative colitis. The assessment of routine liver function tests could be an inaccurate reflection of liver damage, so its prevalence could be underestimated. There would be a need for non-invasive biomarkers and/or scoring systems, which would help the diagnosis of liver damage associated with intestinal diseases. AIM:In our work we considered to highlight the importance of the gut-liver axis significance. We used data of patients suffering from ulcerative colitis, as a model for bowel diseases to understand the underlying factors of the pathogenesis of hepatobiliary manifestations. METHOD:In our retrospective study, we investigated the data of 100 ulcerative colitis patients (male = 46, female = 54) (mean age: 42.5 ± 12.7) and compared to healthy controls (n = 42) (male = 17, female = 25) (mean age: 40.2 ± 13.5). Liver function tests (ALT, AST, GGT, ALP, bilirubin, albumin, thrombocyte), bile acid levels were determinated, and various free radical markers (global, enzymatic) were used to assess the redox homeostasis of patients. Hydrogen donor activity, reducing power, superoxide dismutase and glutathione peroxidase activity, total antioxidant status and induced chemiluminescence were measured, considering that the patients received 5-aminosalicilate and/or azathioprin and elemental diet treatment. RESULTS:Liver function parameters were increased in ulcerative colitis patients, and total antioxidant status, as well. Reducing power significantly decreased, but there was no significant difference compared to the control group of glutathione peroxidase and H-donor activity, we observed only tendentious decrease. The antioxidant protection of more than 54% of patients had a significantly lower rate, according to all the parameters. With chemiluminescence measurement we measured better free radical scavenging capacity, both in plasma and in erythrocytes as a result of the therapy, however, it showed an increase of superoxide dismutase activity, which warns of inflammatory processes. The cause of the decrease in bile acid levels found in the group of ulcerative colitis patients, can be the accelerated peristaltic. CONCLUSIONS:In the daily routine, liver enzyme values do not give an accurate picture of liver damage associated with ulcerative colitis. With the help of various specific parameters determined by us, we can estimate the background processes of the gut-liver axis alterations. The decrease in bile acid levels can be a predictive factor in ulcerative colitis. Our work highlights the need of non-invasive screening for liver diseases in inflammatory bowel disease. Orv Hetil. 2017; 158(26): 1014-1021.

journal_name

Orv Hetil

journal_title

Orvosi hetilap

authors

Egresi A,Kovács Á,Szilvás Á,Blázovics A

doi

10.1556/650.2017.30781

subject

Has Abstract

pub_date

2017-07-01 00:00:00

pages

1014-1021

issue

eissn

0030-6002

issn

1788-6120

journal_volume

158

pub_type

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[Gut-liver axis in inflammatory bowel disease. A retrospective study].