Characterisation of liver fat in the UK Biobank cohort

by Henry R. Wilman, Matt Kelly, Steve Garratt, Paul M. Matthews, Matteo Milanesi, Amy Herlihy, Micheal Gyngell, Stefan Neubauer, Jimmy D. Bell, Rajarshi Banerjee, E. Louise Thomas Non-alcoholic fatty liver disease and the risk of progression to steatohepatitis, cirrhosis and hepatocellular carcinoma have been identified as major public health concerns. We have demonstrated the feasibility and potential value of measuring liver fat content by magnetic resonance imaging (MRI) in a large population in this study of 4,949 participants (aged 45–73 years) in the UK Biobank imaging enhancement. Despite requirements for only a single (≤3min) scan of each subject, liver fat was able to be measured as the MRI proton density fat fraction (PDFF) with an overall success rate o f 96.4%. The overall hepatic fat distribution was centred between 1–2%, and was highly skewed towards higher fat content. The mean PDFF was 3.91%, and median 2.11%. Analysis of PDFF in conjunction with other data fields available from the UK Biobank Resource showed associations of increased liver fat with greater age, BMI, weight gain, high blood pressure and Type 2 diabetes. Subjects with BMI less than 25 kg/m2 had a low risk (5%) of high liver fat (PDFF> 5.5%), whereas in the higher BMI population (>30 kg/m2) the prevalence of high liver fat was approximately 1 in 3. These data suggest that population screening to identify people with high PDFF is possible and could be cost effective. MRI bas...
Source: PLoS One - Category: Biomedical Science Authors: Source Type: research

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Non-Alcoholic Fatty Liver Disease (NAFLD), a progressive liver disease that is closely associated with obesity, type 2 diabetes, hypertension and dyslipidaemia, represents an increasing global public health challenge. There is significant variability in the disease course: the majority exhibit only fat accumulation in the liver but a significant minority develop a necroinflammatory form of the disease (non-alcoholic steatohepatitis, NASH) that may progress to cirrhosis and hepatocellular carcinoma.
Source: Contemporary Clinical Trials - Category: Radiology Authors: Source Type: research
CONCLUSION: NAFLD-related HCC was found in non-cirrhotic patients in 42% of cases, alpha-fetoprotein level was normal in 63% and "steatohepatitic HCC" was the predominant histological type. Immunoexpression of K19 and/or Ki-67 occurred in 32% of the nodules and were associated with intratumoral inflammation and ballooning, suggesting that HCC in MtS may be preferentially "an inflammatory, non-proliferative subtype of HCC". PMID: 31858523 [PubMed - as supplied by publisher]
Source: Histology and Histopathology - Category: Cytology Tags: Histol Histopathol Source Type: research
This study aims to determine the effect of type 2 diabetes mellitus and insulin therapy on non-alcoholic fatty liver disease in the patients with morbid obesity. MATERIAL AND METHODS: Clinical, anthropometric and laboratory data were analyzed together with intraoperative liver biopsies from morbidly obese patients undergoing bariatric surgery. RESULTS: 219 patients with morbid obesity were evaluated. Systemic arterial hypertension (55.9% vs. 33.8%, p = 0.004) and dyslipidemia (67.1% vs. 39.0%, p
Source: Annals of Hepatology - Category: Gastroenterology Tags: Ann Hepatol Source Type: research
Liver disease constitutes the third most common cause of premature death in the UK, and its prevalence is substantially higher compared to other countries in Western Europe.[1 –3] Excess liver iron is associated with increased severity and progression of liver diseases including cirrhosis and hepatocellular carcinoma in individuals with non-alcoholic fatty liver disease (NAFLD), [4–6] and is the direct cause of liver disease in those with hereditary haemochromatosis a nd thalassaemia.[7,8] Observational associations have been described between excess liver iron content and several metabolic diseases such as hig...
Source: Journal of Hepatology - Category: Gastroenterology Authors: Source Type: research
AbstractPurpose of ReviewIn this review, we examine the interaction between the metabolic syndrome (MS) and non-alcoholic fatty liver disease (NAFLD) and describe the impact of the features of MS on the most worrisome complications of non-alcoholic steatohepatitis (NASH), (cirrhosis, hepatocellular carcinoma) and, ultimately, on liver-related, cardiovascular, and overall mortality.Recent FindingsInsulin resistance, obesity, and dyslipidemia in a pro-inflammatory environment have a causal role in hepatic fibrogenesis and oncogenesis in NAFLD patients. Natural history, longitudinal studies confirm the conditions linked to MS...
Source: Current Hepatitis Reports - Category: Infectious Diseases Source Type: research
CONCLUSION: Type 2 diabetes mellitus plays an important role in the progression of non-alcoholic fatty liver disease as an independent risk factor for severe fibrosis. PMID: 29893699 [PubMed - in process]
Source: Annals of Hepatology - Category: Gastroenterology Tags: Ann Hepatol Source Type: research
Conclusion This cohort study aimed to assess whether a high BMI in late adolescence is associated with an increased risk of severe liver disease and liver cancer in later life. The researchers generally found a higher BMI was associated with an increased risk of severe liver disease, including liver cancer. A diagnosis of type 2 diabetes during follow-up was associated with a further increased risk of severe liver disease, regardless of BMI at the start of the study. This study included a very large population, and has used reliable sources of data for medical diagnoses and cause of death. But there are limitations to ...
Source: NHS News Feed - Category: Consumer Health News Tags: Obesity Cancer Source Type: news
Conclusions: As the global epidemic of obesity fuels metabolic conditions, the clinical and economic burden of NAFLD will become enormous. (Hepatology 2015)
Source: Hepatology - Category: Internal Medicine Authors: Tags: Steatohepatitis and Metabolic Liver Disease Source Type: research
Non-alcoholic fatty liver disease (NAFLD) is considered to be the hepatic manifestation of the metabolic syndrome, which is characterized by insulin resistance, dyslipidemia, hypertension and type 2 diabetes [1,2]. It occurs mainly due to fat accumulation in the liver, and can lead to cirrhosis, which is not reversible and may ultimately progress to hepatocellular carcinoma (HCC) [3,4]. Several population-based studies have demonstrated that the prevalence of NAFLD in premenopausal women is lower than that in men between the ages of 20 and 50years, and also lower than in postmenopausal women [5,6].
Source: Journal of Hepatology - Category: Gastroenterology Authors: Tags: Research Article Source Type: research
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