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Risk factors and biomarkers of non-alcoholic fatty liver disease: an observational cross-sectional population survey.

ABSTRACT: OBJECTIVE:Non-alcoholic fatty liver disease (NAFLD) is a major public health burden in China, and its prevalence is increasing. This study aimed to determine the risk factors and biomarkers of NAFLD. DESIGN:An observational cross-sectional primary survey. SETTING:Central China. PARTICIPANTS:The study included 1479 participants aged over 18 and below 80 years, not currently being treated for cancer or infectious disease or no surgery in the previous year, and no history of cancer or an infectious disease. Participants underwent clinical examination, metabolomic assay and anthropometric assessment. Univariate and logistic regression analyses were used to evaluate associations between covariates and NAFLD. MAIN OUTCOME MEASURES:Risk factors and metabolic biomarkers including sex, body mass index, hypertension, body fat ratio, blood triglycerides, blood fasting glucose, liver enzyme elevation, uric acid and oleic acid-hydroxy oleic acid (OAHOA). RESULTS:Data from the 447 participants (mean age 44.3±11.9 years) were analysed, and the prevalence of NAFLD was 24.7%. Male sex (OR 3.484, 95%?CI 2.028 to 5.988), body mass index ?24?kg/m2 (OR 8.494, 95%?CI 5.581 to 12.928), body fat ratio (?25 for women, ?20 for men) (OR 1.833, 95%?CI 1.286 to 2.756), triglycerides ?1.7?mmol/L (OR 1.340, 95%?CI 1.006 to 1.785), fasting glucose ?6.1?mmol/L (OR 3.324, 95%?CI 1.888 to 5.850), blood pressure ?140/90?mm Hg or antihypertensive drug treatment (OR 1.451, 95%?CI 1.069 to 1.970), uric acid (?357 ?mol/L for women, ?416 ?mol/L for men) (OR 2.755, 95%?CI 2.009 to 3.778) and OAHOA (<5?nmol/L) (OR 1.340, 95%?CI 1.006 to 1.785) were independent predictors of NAFLD (all P<0.05). These results were verified by all 1479 participants. CONCLUSIONS:NAFLD was common among the study participants. In particular, NAFLD was correlated with uric acid. We identified OAHOA as a novel marker of NAFLD prevalence. It provides a reference on the prevention of NAFLD and related metabolic diseases with the rapid urbanisation, technological advancement and population ageing in China over the recent decades.

SUBMITTER: Hu XY

PROVIDER: S-EPMC5892783 | biostudies-other | 2018 Apr

REPOSITORIES: biostudies-other

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Risk factors and biomarkers of non-alcoholic fatty liver disease: an observational cross-sectional population survey.

Hu Xiao-Yu XY Li Yun Y Li Long-Quan LQ Zheng Yuan Y Lv Jia-Hong JH Huang Shu-Chun SC Zhang Weinong W Liu Liang L Zhao Ling L Liu Zhuiguo Z Zhao Xiu-Ju XJ

BMJ open 20180405 4

<h4>Objective</h4>Non-alcoholic fatty liver disease (NAFLD) is a major public health burden in China, and its prevalence is increasing. This study aimed to determine the risk factors and biomarkers of NAFLD.<h4>Design</h4>An observational cross-sectional primary survey.<h4>Setting</h4>Central China.<h4>Participants</h4>The study included 1479 participants aged over 18 and below 80 years, not currently being treated for cancer or infectious disease or no surgery in the previous year, and no histo ...[more]

PMID: 29626047

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Project description:BackgroundDespite the extensive scientific evidence accumulating on the epidemiological risk factors for non-alcoholic fatty liver disease (NAFLD), evidence exploring sex- and age-related differences remains insufficient. The present cross-sectional study aims to investigate possible sex differences in the prevalence of FLI-defined NAFLD as well as in its association with common risk factors across different age groups, in a large sample of Spanish working adults.MethodsThis cross-sectional study included data from 33,216 Spanish adult workers (18-65 years) randomly selected during voluntary routine occupational medical examinations. Sociodemographic characteristics (age and social class), anthropometric (height, weight, and waist circumference) and clinical parameters (blood pressure and serum parameters) were collected. NAFLD was determined by the validated fatty liver index (FLI) with a cut-off value of ≥ 60. The presence of metabolic syndrome (MetS) was assessed according to the diagnostic criteria of the International Diabetes Federation. Cardiovascular risk was determined using the REGICOR-Framingham equation. The association between FLI-defined NAFLD and risk factors by sex and age was evaluated by multivariate logistic regression.ResultsThe prevalence of FLI-defined NAFLD (FLI ≥ 60) was 19.1% overall, 27.9% (95% CI 23.3-28.5%) for men and 6.8% (95% CI 6.4-7.3%) for women and increasing across age intervals. As compared to women, men presented worse cardiometabolic and anthropometric profiles. The multivariate analysis model showed that hepatic steatosis assessed by FLI was strongly associated with age, HDL-cholesterol, social class, prediabetes, diabetes, prehypertension, hypertension, and smoking status for both men and women. The association between diabetes and hypertension with FLI-defined NAFLD was stronger in women than in men at both univariate and multivariate analyses.ConclusionsMen presented a higher prevalence of NAFLD than women across all age intervals, as well as a worse cardiometabolic profile and a higher cardiovascular risk. Nevertheless, the association between FLI-defined NAFLD and diabetes or hypertension was significantly stronger in women than in men, possibly indicating that the presence of a dysmetabolic state might affect women more than men with regard to liver outcomes.

Project description:BackgroundIn dyspeptic patients with Helicobacter pylori contributes to non-alcoholic fatty liver disease. However, little evidence available from Pakistan.ObjectiveThe study aims to determine the frequency and risk factors of non-alcoholic fatty liver disease in dyspeptic patients with Helicobacter pylori.MethodsThis cross-sectional study was conducted between 22 November 2016 and 30 June 2018. Adults of age between 18 and 90 years who attended the out-patient department due to abdominal discomfort, pain, fullness, and bloating who underwent upper gastrointestinal tract endoscopy were enrolled after taking informed consent. Patients with celiac disease, inflammatory bowel disease, taking alcohol, pregnant women and lactating mothers, known cases of hepatitis B and C, and history of recent antibiotic use were excluded. Data on age, gender, smoking, alcohol use, dyslipidemia, hypertension, type 2 diabetes mellitus, and ischemic heart disease were collected. Non-alcoholic fatty liver disease was diagnosed through ultrasonography. Helicobacter pylori infection was detected using a carbon urea breath test.ResultsA total of 698 patients were screened for eligibility, and 399 (57.2%) had Helicobacter pylori infection and were enrolled in the study after consent. The median age was 50.1 (interquartile range = 14.5) years and 209 (52.4%) were males. Frequency of non-alcoholic fatty liver disease in patients with Helicobacter pylori dyspeptic patients was 153 (38.3%). Factors associated with non-alcoholic fatty liver disease in the presence of Helicobacter pylori were dyslipidemia 7.38 (95% confidence interval = 2.4-22.71), type 2 diabetes mellitus 5.96 (95% confidence interval = 1.86-19.07), hypertension 3.0 (95% confidence interval = 1.21-7.45), and moderate gastritis 2.81 (95% confidence interval = 1.2-6.59).ConclusionThe frequency of non-alcoholic fatty liver disease in Helicobacter Pylori dyspeptic patients was 38.3%. Male gender, dyslipidemia, hypertension, ischemic heart disease, and moderate gastritis were associated with non-alcoholic fatty liver disease.

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Risk factors and biomarkers of non-alcoholic fatty liver disease: an observational cross-sectional population survey.

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Risk factors and biomarkers of non-alcoholic fatty liver disease: an observational cross-sectional population survey.

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