Searchable abstracts of presentations at key conferences in endocrinology

ea0059pl2 | Society for Endocrinology Starling Medal Lecture | SFEBES2018

Hepatic fatty acid synthesis and partitioning: the effect of metabolic and nutritional state

Hodson Leanne

Non-alcoholic fatty liver disease (NAFLD), the hepatic manifestation of the metabolic syndrome encompasses a spectrum of conditions from hepatic steatosis through to cirrhosis; obesity is a known risk factor. It remains unclear why intra-hepatocellular fat starts to accumulate, but it is likely to involve an imbalance between fatty acid delivery to the liver, fatty acid synthesis and oxidation within the liver and triglyceride export from the liver. Studying hepatic metabolism...

ea0034apw1.3 | A guide to the analysis of energy metabolism | SFEBES2014

Tracking lipid energy partitioning in human liver

Hodson Leanne

The liver is a relay station for fatty acid metabolism. Perturbations in hepatic fatty acid metabolism have the potential to impact widely on metabolic health. The accumulation or loss of liver fat (hepatocyte triacylglycerol (TG)) represents the balance between input pathways and removal pathways. In health these pathways must be closely balanced; imbalance will lead to changes in liver fat content. The concept of hepatic fatty acid partitioning is that fatty acids within the...

ea0077p46 | Metabolism, Obesity and Diabetes | SFEBES2021

AKR1C1 knock-down does not alter cell proliferation or response to chemotherapeutic agents in human hepatoma models

Conceicao Ismael , Arvaniti Anastasia , Hodson Leanne , Nikolaou Nikolaos , Tomlinson Jeremy

Hepatocellular carcinoma (HCC) is the 6th most common form of cancer and the 4th most common cause of cancer related death. AKR1C1 is a member of the aldo-keto reductase 1C (AKR1C) subfamily and has important roles in steroid hormone metabolism and in reducing lipid peroxides. AKR1C1 is ubiquitously expressed, with high levels of expression in the liver. Studies have identified differential expression in HCC with high levels of AKR1C1 expression associate...

ea0086p66 | Metabolism, Obesity and Diabetes | SFEBES2022

Assessing the effect of different fatty acid compositions on in vitro cellular models of human hepatocytes

Cross Eloise , Nagarajan Shilpa , Sanna Fabio , Hodson Leanne

Background: Pathological accumulation of intrahepatocellular triglyceride (IHTG) is the first stage non-alcoholic fatty liver disease (NAFLD), which encompasses a spectrum of disease from simple steatosis through to cirrhosis. Dietary interventions have demonstrated alterations in dietary fat quantity and quality affect IHTG content; diets rich in saturated compared to unsaturated fat increase IHTG accumulation to a greater extent. Studying the underlying mechanisms in viv...

ea0086p67 | Metabolism, Obesity and Diabetes | SFEBES2022

Intrahepatocellular insulin resistance and lipid droplet morphology: Influence of fatty acid composition

Nagarajan Shilpa , Cross Eloise , Johnson Elspeth , Westcott Felix , Hodson Leanne

Background: Non-alcoholic fatty liver disease (NAFLD) encompasses a spectrum of diseases starting with pathological accumulation of intrahepatocellular triglyceride (TG) (i.e. steatosis), which can progress to steatohepatitis (NASH) and cirrhosis. Insulin resistance is often associated with the development of steatosis and disease progression however, the underlying mechanisms for this are poorly defined. A major challenge in modelling human NAFLD disease progression is the la...

ea0086p206 | Metabolism, Obesity and Diabetes | SFEBES2022

Circulating levels of adipose-derived lipokines correlate positively with fasting insulin in states of increased insulin insensitivity in humans

Gamwell Jonathan , Riecan Martin , Pinnick Katherine , Kuda Ondrej , Hodson Leanne

Introduction: Palmitoleate, a proposed adipose tissue (AT)-derived lipokine, has been suggested to contribute to glucose homeostasis. However, data relating to the association between circulating palmitoleate and markers of insulin sensitivity in humans are equivocal. Recently, AT-derived fatty acid-hydroxy fatty acids (FAHFAs) have also been suggested to play a role in glucose homeostasis by increasing glucose uptake in AT. Again, data is conflicting for the association betwe...

ea0086p222 | Metabolism, Obesity and Diabetes | SFEBES2022

Investigating the effects of 5.5 mmoL vs 25 mmoL glucose concentration in culture media on LHCN-M2 cell viability, proliferation, metabolism and differentiation

Brett Ryan , Renshaw Derek , Hodson Leanne , Turner Mark

Introduction: In vitro skeletal muscle cell models are vitally important for investigating the molecular mechanisms of skeletal muscle in metabolic and endocrine diseases, such as obesity and type 2 diabetes. Culture media for skeletal muscle cells can often contain glucose concentrations (GC) five times higher than what’s considered normal in fasting human plasma, thus is not representative of the in vivo environment. Hyperglycaemia in culture media may...

ea0049ep728 | Steroid metabolism + action | ECE2017

Hepatic and adipose tissue insulin resistance as a consequence of intermittent hypoxia are exacerbated by glucocorticoid receptor antagonism in man

Hazlehurst Jonathan , Charlton Catriona , Mantripp Diana , Hodson Leanne , Tomlinson Jeremy

Introduction: Obstructive sleep apnea (OSA) affects up to 20% of a Western population and is associated with non-alcoholic fatty liver disease and type 2 diabetes (T2D). OSA is characterized by intermittent episodes of hypoxia (IH) that occur during sleep. It is not yet known if IH is directly linked to insulin resistance within key metabolic target tissues (adipose; liver and skeletal muscle) and what the potential underlying mechanism may be. It has been suggested that indiv...

ea0041ep208 | Cardiovascular Endocrinology and Lipid Metabolism | ECE2016

Optimising human hepatocyte models for metabolic phenotype: effects of treatment with DMSO

Nikolaou Nikolaos , Green Charlotte , Gunn Pippa , Hodson Leanne , Tomlinson Jeremy

Primary human hepatocytes are considered the ‘gold standard’ to explore metabolic phenotype within the liver, however they come with limitations, such as donor variability, lack of proliferation and rapid phenotype loss. The human hepatoma cell line, HepG2, has been used extensively in cell-based metabolic studies but there are significant limitations including their malignant origin and inherent low rates of triglyceride secretion. The aim of this study was to inves...

ea0059p173 | Obesity & metabolism | SFEBES2018

Fructose is metabolised by human subcutaneous adipocytes and can be used as a substrate for de novo lipogenesis

Pinnick Katherine , Cornfield Thomas , Green Charlotte , Hodson Leanne

Introduction: Excessive consumption of free sugars (glucose and fructose) is linked to an increased risk of developing chronic metabolic diseases. Current knowledge of fructose metabolism has focussed on the liver where it is implicated in impaired insulin sensitivity, increased fat accumulation and dyslipidaemia. The long-term effects of elevated fructose consumption on human health are poorly defined and fructose metabolism in subcutaneous adipose tissue, the largest human f...