Searchable abstracts of presentations at key conferences in endocrinology

ea0031p182 | Obesity, diabetes, metabolism and cardiovascular | SFEBES2013

Vitamin B12 and folate imbalance induces cholesterol synthesis and endoplasmic reticulum stress in human adipocytes

Adaikalakoteswari Antonysunil , Moore Jonathan , Ciara Mccarthy , Voyais Philip , Mcternan Philip , Saravanan Ponnusamy , Tripathi Gyanendra

Adipose tissue (AT) plays a central role in integrating energy metabolism and glucose homeostasis. It is the major site of fatty acid storage as triglycerides and is body’s largest cholesterol pool. In AT cholesterol is mostly found in its free, non-esterified form. There is accumulating evidence that cholesterol imbalance in AT is closely associated with adipocyte dysfunction and obesity-mediated metabolic complications, including low levels of high-density lipoprotein c...

ea0031p201 | Obesity, diabetes, metabolism and cardiovascular | SFEBES2013

Unfolded protein response pathway, IRE1α-XBP1 is altered during adipogenesis in obese human adipocytes

Voyias Philip , McCarthy Ciara , Antonysunil Adaikala , Kumsaiyai Warunee , Harte Alison , McTernan Philip , Tripathi Gyanendra

Background: Adipose tissue (AT) plays a central role in obesity-related complications such as cardiovascular diseases, insulin resistance, and type two diabetes. A comprehensive understanding of the molecular mechanisms underlying adipocyte formation is of both fundamental and clinical relevance. It has been reported that UPR pathway, IRE1α-XBP1 regulates hepatic lipogenesis and the role of this pathway in adipogenesis in murine adipocytes has also been confirmed. Our tea...

ea0031p204 | Obesity, diabetes, metabolism and cardiovascular | SFEBES2013

Altered mitochondrial dynamics in obesity: redressing the balance through bariatric surgery?

McCarthy Ciara , Voyias Philip , Antonysunil Adaikala , Harte Alison , Saravanan Ponnusamy , Kyrou Ioannis , Tripathi Gyanendra , McTernan Philip

Mitochondria are essential for synthesising ATP required for cellular metabolism. Mitochondria are able to alter their morphology and abundance through the balance of fission and fusion genes. T2DM is often accompanied by a metabolic syndrome within the individual. The aim of my PhD is to investigate whether metabolic dysregulation in T2DM can be linked to dysfunction within their mitochondria.Declaration of funding: EPSRC....

ea0028p176 | Obesity, diabetes, metabolism and cardiovascular | SFEBES2012

Expression of genes regulating mitochondrial fusion and fission in human adipose tissue are influenced by adiposity and bariatric surgery

McCarthy Ciara , Voyias Philip , Antonysunil Adaikala , McGee Kirsty , Harte Alison , Saravanan Ponnusamy , Kyrou Ioannis , Kumar Sudhesh , McTernan Philip , Tripathi Gyanendra

Mitochondria are essential for synthesising ATP required for cellular metabolism. In response to changes in their cellular environment, mitochondria are able to alter their morphology and abundance through the balance of “fusion” and “fission” events. The aim of this study was to profile the expression of mitochondrial genes in the abdominal subcutaneous (AbSc) adipose tissue (AT) of lean, obese and Type 2 Diabetes Mellitus (T2DM) individuals and determine ...

ea0028p177 | Obesity, diabetes, metabolism and cardiovascular | SFEBES2012

The effects of bariatric surgery on the endoplasmic reticulum stress pathway in human adipose tissue

Voyias Philip , McCarthy Ciara , Antonysunil Adaikala , Kumasaiyai Warunee , Al Naji Fadi , McGee Kirsty , Harte Alison , Saravanan Ponnusamy , Kyrou Ioannis , McTernan Philip , Tripathi Gyanendra

Background: Endoplasmic reticulum (ER) stress in adipose tissue (AT) is critical to the initiation and integration of inflammation and insulin signalling pathways in obese and type 2 diabetes mellitus (T2DM) patients. It induces an unfolded protein response (UPR) to restore functional integrity which leads to upregulation of three master regulators of ER; PKR-like ER-regulated kinase (PERK), inositol requiring enzyme1α (IRE1α) and activating transcription factor6 (AT...