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  1. Article ; Online: Association between toothbrushing and non-alcoholic fatty liver disease.

    Ji-Youn Kim / Yong-Moon Park / Gyu-Na Lee / Hyun Chul Song / Yu-Bae Ahn / Kyungdo Han / Seung-Hyun Ko

    PLoS ONE, Vol 16, Iss 5, p e

    2021  Volume 0243686

    Abstract: Non-alcoholic fatty liver disease (NAFLD) is considered the hepatic manifestation of metabolic syndrome. Periodontitis, as chronic inflammatory destructive disease, is associated metabolic syndromes bidirectionally. Toothbrushing is an essential and ... ...

    Abstract Non-alcoholic fatty liver disease (NAFLD) is considered the hepatic manifestation of metabolic syndrome. Periodontitis, as chronic inflammatory destructive disease, is associated metabolic syndromes bidirectionally. Toothbrushing is an essential and important way to manage periodontitis through mechanical removal of biofilm at periodontal tissue. We aimed to assess the association between toothbrushing frequency and the prevalent NAFLD in nationally representative Korean adults. Among adults aged 19 years and older who participated in the Korea National Health and Nutrition Examination Survey in 2010, a total of 6,352 subjects were analyzed. NAFLD was defined as fatty liver index ≥60. Multiple logistic regression analysis was used to estimate multivariable-adjusted odds ratios (ORs) and 95% confidence intervals (CIs). An inverse association between toothbrushing frequency and NAFLD was found. The adjusted ORs (95% CIs) of NALFD was 0.56 (0.35-0.91) in the group who performed toothbrushing ≥ 3 per day compared to the group that performed toothbrushing ≤ 1 per day. For those with toothbrushing frequency ≤1 per day, the adjusted OR (95% CIs) of NAFLD was 2.26 (1.22-4.19) in smokers and 4.52 (1.97-10.38) in subjects with diabetes mellitus (DM), compared to those without the disease and with toothbrushing frequency ≥2 per day, respectively. Our results indicate that higher frequency of toothbrushing is inversely associated with NAFLD. As a modifiable oral habit, regular toothbrushing may be recommended to lower risk of NAFLD, especially in high risk groups such as smokers and diabetic patients.
    Keywords Medicine ; R ; Science ; Q
    Subject code 610
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Association between Fatty Liver Index and Periodontitis

    Ji-Youn Kim / Gyu-Na Lee / Hyun Chul Song / Yong-Moon Park / Yu-Bae Ahn / Kyungdo Han / Seung-Hyun Ko

    Scientific Reports, Vol 10, Iss 1, Pp 1-

    the Korea National Health and Nutrition Examination Survey

    2020  Volume 7

    Abstract: Abstract It has been suggested that periodontitis is associated with metabolic abnormalities including non-alcoholic fatty liver disease (NAFLD). The fatty liver index (FLI) is a non-invasive surrogate marker and predictor of NAFLD. We aimed to determine ...

    Abstract Abstract It has been suggested that periodontitis is associated with metabolic abnormalities including non-alcoholic fatty liver disease (NAFLD). The fatty liver index (FLI) is a non-invasive surrogate marker and predictor of NAFLD. We aimed to determine whether FLI itself would be associated with periodontitis through a secondary analysis of previously reported nationally representative probability sample data of the Korean population. FLI was calculated from a previously developed algorithm which combines measures of body mass index (BMI), waist circumference, triglyceride, and gamma-glutamyl transferase (GGT). Periodontitis was diagnosed based on the Community Periodontal Index (CPI) developed by the World Health Organization. Of 4,272 participants, 26.1% were diagnosed with periodontitis. Higher FLI was associated with a higher prevalence of periodontitis (Odds ratio (OR) highest vs. lowest quartile of FLI,1.63; 95% confidence interval (CI), 1.23–2.16; P = 0.001 for trend) adjusting for confounding factors. In the highest FLI quartile, prevalence of periodontitis was higher in individuals with diabetes (OR highest vs. lowest quartile of FLI, 2.89; 95% CI, 1.01–8.27 for diabetic subgroup; OR highest vs. lowest quartile of FLI, 1.45; 95% CI, 1.07–1.96 for non-diabetic subgroup). In summary, FLI was associated with prevalent periodontitis.
    Keywords Medicine ; R ; Science ; Q
    Language English
    Publishing date 2020-03-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: Carbon monoxide induces the assembly of stress granule through the integrated stress response

    Chen, Yingqing / Yeonsoo Joe / Jeongmin Park / Hyun-Chul Song / Uh-Hyun Kim / Hun Taeg Chung

    Biochemical and biophysical research communications. 2019 Apr. 30, v. 512, no. 2

    2019  

    Abstract: Stress granules (SGs) are membraneless and phase-dense organelles that form transiently in response to a variety of harmful stimuli, including oxidative, heat, osmotic, ultraviolet light and chemotoxic stresses, and thus providing protective effects, ... ...

    Abstract Stress granules (SGs) are membraneless and phase-dense organelles that form transiently in response to a variety of harmful stimuli, including oxidative, heat, osmotic, ultraviolet light and chemotoxic stresses, and thus providing protective effects, allowing survivals. Carbon monoxide (CO), a gaseous second messenger, is synthesized by heme-oxygenases, and exerts anti-inflammatory, anti-proliferative and anti-apoptotic effects in a variety of cellular- and tissue-injury models. Several reports indicate that low levels of mitochondrial reactive oxygen species (mtROS) generated by CO can selectively activate PERK-eIF2α integrated stress response (ISR) to preserve the cellular homeostasis. Hence, CO can confer protection against cellular stresses. However, the mechanisms underlying the cyto-protective effects of CO against various harmful stimuli remain to be elucidated. Here, we sought to examine whether CO induces the SG assembly, and uncover its molecular mechanisms. We treated WI-38 cells and primary mouse embryonic fibroblasts (MEFs) with CO-releasing molecule 2 (CORM2) or CO gas, and found the SG assemblies were gradually increased in time and dose dependent manners. Next, we used Mito-TEMPO, an mtROS scavenger, to explore if mtROS might be involved in the CO-induced SG assembly. Furthermore, we confirmed the involvement of ISR consisted of PERK-eIF2α signaling pathway induced by CO for the SGs assembly. Finally, the inhibition of SG assembly by ISR inhibitor further verified CO-induced ISR might be responsible for SG. Taken together, in this study, we first demonstrated that CO is a novel SG inducer by activating ISR. Moreover, mtROS might be an initiator for the CO-induced ISR responsible for SG assembly.
    Keywords apoptosis ; carbon monoxide ; cytoplasmic granules ; dose response ; fibroblasts ; heat ; heme oxygenase (biliverdin-producing) ; homeostasis ; mice ; mitochondria ; models ; protective effect ; reactive oxygen species ; signal transduction ; stress response ; ultraviolet radiation
    Language English
    Dates of publication 2019-0430
    Size p. 289-294.
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 205723-2
    ISSN 0006-291X ; 0006-291X
    ISSN (online) 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2019.03.017
    Database NAL-Catalogue (AGRICOLA)

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