Journal Article


Lorraine Brennan
Eileen R Gibney
Helen M Roche
Michael J Gibney
Miriam F Ryan
Colm M O Grada
Ciara Morris


Agriculture & Food Science

neurological disorders challenge profile modulation high throughput environmental factors lipid a fitness

Modulation of the lipidomic profile due to a lipid challenge and fitness level: a postprandial study. (2015)

Abstract The lipid composition of plasma is known to vary due to both phenotypic factors such as age, gender and BMI as well as with various diseases including cancer and neurological disorders. However, there is little investigation into the variation in the lipidome due to exercise and/ or metabolic challenges. The objectives of this present study were (i) To identify the glycerophospholipid, sphingolipids and ceramide changes in response to an oral lipid tolerance test (OLTT) in healthy adults and (ii) To identify the effect of aerobic fitness level on lipidomic profiles. 214 healthy adults aged 18-60 years were recruited as part of a metabolic challenge study. A sub-group of 40 volunteers were selected for lipidomic analysis based on their aerobic fitness level. Ceramides, glycerophospholipids and sphingomyelins were quantified in baseline fasting plasma samples as well as at 60, 120, 180, 240 and 300 min following a lipid challenge using high-throughput flow injection ESI-MS/MS. Mixed model repeated measures analysis identified lipids which were significantly changing over the time course of the lipid challenge. Included in these lipids were lysophosphoethanolamines (LPE), phosphoethanolamines (PE), phosphoglycerides (PG) and ceramides (Cer). Five lipids (LPE a C18:2, LPE a C18:1, PE aa C36:2, PE aa C36:3 and N-C16:1-Cer) had a fold change > 1.5 at 120 min following the challenge and these lipids remained elevated. Furthermore, three of these lipids (LPE a C18:2, PE aa C36:2 and PE aa C36:3) were predictive of fasting and peak plasma TAG concentrations following the OLTT. Further analysis revealed that fitness level has a significant impact on the response to the OLTT: in particular significant differences between fitness groups were observed for phosphatidylcholines (PC), sphingomyelins (SM) and ceramides. This study identified specific lipids which were modulated by an acute lipid challenge. Furthermore, it identified a series of lipids which were modulated by fitness level. Future lipidomic studies should take into account environmental factors such as diet and fitness level during biomarker discovery work. Data, clinicaltrials.gov, NCT01172951.
Collections Ireland -> University College Dublin -> PubMed

Full list of authors on original publication

Lorraine Brennan, Eileen R Gibney, Helen M Roche, Michael J Gibney, Miriam F Ryan, Colm M O Grada, Ciara Morris

Experts in our system

Lorraine Brennan
University College Dublin
Total Publications: 166
Eileen R Gibney
University College Dublin
Total Publications: 98
Helen M. Roche
University College Dublin
Total Publications: 105
Michael J Gibney
University College Dublin
Total Publications: 102
Miriam Ryan
University College Dublin
Total Publications: 34