scholarly journals Urinary Phthalate Levels Associated with the Risk of Nonalcoholic Fatty Liver Disease in Adults: The Korean National Environmental Health Survey (KoNEHS) 2012–2014

2021 ◽  
Vol 18 (11) ◽  
pp. 6035
Author(s):  
Yun-Jung Yang ◽  
Taehyen Kim ◽  
Yeon-Pyo Hong
Keyword(s):  
Liver Disease ◽  
Fatty Liver ◽  
Environmental Health ◽  
Nonalcoholic Fatty Liver Disease ◽  
Health Survey ◽  
Fatty Liver Disease ◽  
Experimental Studies ◽  
Nonalcoholic Fatty Liver ◽  
Korean Adults ◽  
National Environmental

The prevalence of nonalcoholic fatty liver disease (NAFLD) is increasing worldwide. Recent experimental studies suggested that phthalates might induce NAFLD. Therefore, this study aimed to investigate the relationship between phthalates metabolites and NAFLD in the human population. This cross-sectional analysis was performed using data from the Korean National Environmental Health Survey II (2012–2014) among Korean adults (n = 5800). NAFLD was diagnosed using the hepatic steatosis index (HSI) in the absence of other causes of chronic liver diseases. Among the participants (mean age 46 years, 47.5% male), the prevalence of NAFLD was associated with urinary levels of mono(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), mono-(2-ethyl-5-oxohexyl) phthalate, mono-(2-ethyl-5-carboxypentyl) phthalate, mono-benzyl phthalate (MBzP), and mono-n-butyl phthalate (MnBP) compared to the reference group. In the multivariate model, the odds ratios (ORs), 95% confidence interval (CI) for NAFLD were 1.33 (1.00–1.78) and 1.39 (1.00–1.92) in the 3rd and 4th quartile of MEHHP, respectively. Based on the study findings, high levels of urinary phthalates are associated with the prevalence of NAFLD in Korean adults. Further investigation is required to elucidate the causal relationship.

scholarly journals The association between urinary bisphenol A levels and nonalcoholic fatty liver disease in Korean adults: Korean National Environmental Health Survey (KoNEHS) 2015-2017

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Sang Joon An ◽  
Eun-Jung Yang ◽  
Subin Oh ◽  
Kyong Jin Park ◽  
Taehyen Kim ◽  
...  
Keyword(s):  
Liver Disease ◽  
Bisphenol A ◽  
Fatty Liver ◽  
Environmental Health ◽  
Nonalcoholic Fatty Liver Disease ◽  
Health Survey ◽  
Fatty Liver Disease ◽  
Nonalcoholic Fatty Liver ◽  
Hepatic Diseases ◽  
National Environmental

Abstract Background Nonalcoholic fatty liver disease (NAFLD) is becoming a global health problem. Bisphenol A (BPA), one of most widely used environmental chemicals, is suspected to be a contributor to the development NAFLD. This study was performed to examine the relationship between human BPA levels and risk of NAFLD. Methods The data (n = 3476 adults: 1474 men and 2002 women) used in this study were obtained from the Korean National Environmental Health Survey III (2015-2017). BPA levels were measured in urine samples. NAFLD was defined using hepatic steatosis index after exclusion of other causes of hepatic diseases. Results There was a significant linear relationship between the elevated urinary BPA concentrations and risk of NAFLD. In a univariate analysis, odds ratio (OR) of the highest quartile of urinary BPA level was 1.47 [95% confidence interval (CI) 1.11-1.94] compared to the lowest quartile. After adjusted with covariates, the ORs for NAFLD in the third and fourth quartiles were 1.31 [95% CI 1.03-1.67] and 1.32 [95% CI 1.03–1.70], respectively. Conclusions Urinary BPA levels are positively associated with the risk of NAFLD in adults. Further experimental studies are needed to understand the molecular mechanisms of BPA on NAFLD prevalence.

Association between lipoprotein(a) and nonalcoholic fatty liver disease among Korean adults

2016 ◽  
Vol 461 ◽  
pp. 14-18 ◽  
Author(s):  
Ji Sun Nam ◽  
Sehee Jo ◽  
Shinae Kang ◽  
Chul Woo Ahn ◽  
Kyung Rae Kim ◽  
...  
Keyword(s):  
Liver Disease ◽  
Fatty Liver ◽  
Nonalcoholic Fatty Liver Disease ◽  
Fatty Liver Disease ◽  
Nonalcoholic Fatty Liver ◽  
Lipoprotein A ◽  
Korean Adults

scholarly journals Association between Blood Mercury Levels and Non-Alcoholic Fatty Liver Disease in Non-Obese Populations: The Korean National Environmental Health Survey (KoNEHS) 2012–2014

2021 ◽  
Vol 18 (12) ◽  
pp. 6412
Author(s):  
Yun-Jung Yang ◽  
Eun-Jung Yang ◽  
Kyoungjin Park ◽  
Subin Oh ◽  
Taehyen Kim ◽  
...  
Keyword(s):  
Liver Disease ◽  
Fatty Liver ◽  
Environmental Health ◽  
Health Survey ◽  
Fatty Liver Disease ◽  
Alcoholic Fatty Liver ◽  
Blood Mercury ◽  
Obese Subjects ◽  
National Environmental ◽  
Alcoholic Fatty Liver Disease

Mercury is widely distributed in the environment, and a plausible association between mercury exposure and hepatic damage has been reported. Non-alcoholic fatty liver disease (NAFLD), which comprises a spectrum of liver diseases, has recently been recognized in non-obese subjects. However, there have been no studies on the relationship between internal mercury levels and NAFLD in non-obese individuals. Therefore, we investigated the association between blood mercury levels and NAFLD in non-obese subjects. Cross-sectional data (n = 5919) were obtained from the Korean National Environmental Health Survey (2012–2014). NAFLD was defined using the hepatic steatosis index (HSI). Blood mercury levels were log-transformed and divided into quartiles based on a weighted sample distribution. The association between blood mercury levels and NAFLD was analyzed using a multivariate logistic analysis after body mass index stratification. The geometric mean of blood mercury in the overweight group was significantly higher than that of the non-obese group (p < 0.001). The weighted frequencies of patients with NAFLD based on the HSI were 3.0–7.2% for the non-obese subjects and 52.3–63.2% for the overweight subjects. In the multivariate analysis, blood mercury levels were positively associated with NAFLD for both the overweight and non-obese groups (all p for trend < 0.001). Increased blood mercury levels are closely associated with NAFLD. In particular, mercury could be a risk factor for NAFLD in the non-obese population.

The Effect of CB1 Antagonism on Hepatic Oxidative/Nitrosative Stress and Inflammation in Nonalcoholic Fatty Liver Disease

2020 ◽  
Vol 28 (1) ◽  
pp. 169-180 ◽  
Author(s):  
Bojan Jorgačević ◽  
Danijela Vučević ◽  
Janko Samardžić ◽  
Dušan Mladenović ◽  
Milena Vesković ◽  
...  
Keyword(s):  
Liver Disease ◽  
Fatty Liver ◽  
Nonalcoholic Fatty Liver Disease ◽  
Fatty Liver Disease ◽  
Cell Activation ◽  
Nitrosative Stress ◽  
Experimental Studies ◽  
Nicotinamide Adenine Dinucleotide Phosphate ◽  
Cb1 Receptors ◽  
Nonalcoholic Fatty Liver

: Dysfunction of the endocannabinoid system (ES) has been identified in nonalcoholic fatty liver disease (NAFLD) and associated metabolic disorders. Cannabinoid receptor type 1 (CB1) expression is largely dependent on nutritional status. Thus, individuals suffering from NAFLD and metabolic syndrome (MS) have a significant increase in ES activity. Furthermore, oxidative/ nitrosative stress and inflammatory process modulation in the liver are highly influenced by the ES. Numerous experimental studies indicate that oxidative and nitrosative stress in the liver is associated with steatosis and portal inflammation during NAFLD. On the other hand, inflammation itself may also contribute to reactive oxygen species (ROS) production due to Kupffer cell activation and increased nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity. The pathways by which endocannabinoids and their lipid-related mediators modulate oxidative stress and lipid peroxidation represent a significant area of research that could yield novel pharmaceutical strategies for the treatment of NAFLD. Cumulative evidence suggested that the ES, particularly CB1 receptors, may also play a role in inflammation and disease progression toward steatohepatitis. Pharmacological inactivation of CB1 receptors in NAFLD exerts multiple beneficial effects, particularly due to the attenuation of hepatic oxidative/nitrosative stress parameters and significant reduction of proinflammatory cytokine production. However, further investigations regarding precise mechanisms by which CB1 blockade influences the reduction of hepatic oxidative/nitrosative stress and inflammation are required before moving toward the clinical phase of the investigation.

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