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Published in: BMC Gastroenterology 1/2015

Open Access 01-12-2015 | Research article

Helicobacter pylori infection is not associated with fatty liver disease including non-alcoholic fatty liver disease: a large-scale cross-sectional study in Japan

Authors: Kazuya Okushin, Yu Takahashi, Nobutake Yamamichi, Takeshi Shimamoto, Kenichiro Enooku, Hidetaka Fujinaga, Takeya Tsutsumi, Yoshizumi Shintani, Yoshiki Sakaguchi, Satoshi Ono, Shinya Kodashima, Mitsuhiro Fujishiro, Kyoji Moriya, Hiroshi Yotsuyanagi, Toru Mitsushima, Kazuhiko Koike

Published in: BMC Gastroenterology | Issue 1/2015

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Abstract

Background

Fatty liver disease (FLD) including non-alcoholic fatty liver disease (NAFLD), a rapidly emerging and widely recognized liver disease today, is regarded as a hepatic manifestation of metabolic syndrome. Helicobacter pylori, one of the most common pathogens worldwide, has been reported to be associated with metabolic syndrome, but whether there is a direct association with FLD is as of yet unclear. The aim of this study was to clarify the association of FLD and NAFLD with causative background factors including Helicobacter pylori infection.

Methods

This was a cross-sectional study of Japanese adults who received medical checkups at a single medical center in 2010.Univariate and multivariate statistical analysis was performed to evaluate background factors for ultrasonography diagnosed FLD. Subjects free from alcohol influence were similarly analyzed for NAFLD.

Results

Of a total of 13,737 subjects, FLD was detected in 1,456 of 6,318 females (23.0 %) and 3,498 of 7,419 males (47.1%). Multivariable analyses revealed that body mass index (standardized coefficients of females and males (β-F/M) =143.5/102.5), serum ALT (β-F/M = 25.8/75.7), age (β-F/M = 34.3/17.2), and platelet count (β-F/M = 17.8/15.2) were positively associated with FLD in both genders. Of the 5,289 subjects free from alcohol influence, NAFLD was detected in 881 of 3,473 females (25.4%) and 921 of 1,816 males (50.7%). Body mass index (β-F/M = 113.3/55.3), serum ALT (β-F/M = 21.6/53.8), and platelet count (β-F/M = 13.8/11.8) were positively associated with NAFLD in both genders. Metabolic syndrome was positively associated with FLD and NAFLD only in males. In contrast, Helicobacter pylori infection status was neither associated with FLD nor NAFLD regardless of gender.

Conclusions

Body mass index, serum ALT and platelet count were significantly associated with FLD and NAFLD, whereas infection of Helicobacter pylori was not.
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Metadata
Title
Helicobacter pylori infection is not associated with fatty liver disease including non-alcoholic fatty liver disease: a large-scale cross-sectional study in Japan
Authors
Kazuya Okushin
Yu Takahashi
Nobutake Yamamichi
Takeshi Shimamoto
Kenichiro Enooku
Hidetaka Fujinaga
Takeya Tsutsumi
Yoshizumi Shintani
Yoshiki Sakaguchi
Satoshi Ono
Shinya Kodashima
Mitsuhiro Fujishiro
Kyoji Moriya
Hiroshi Yotsuyanagi
Toru Mitsushima
Kazuhiko Koike
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Gastroenterology / Issue 1/2015
Electronic ISSN: 1471-230X
DOI
https://doi.org/10.1186/s12876-015-0247-9

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