Porter, D. W., Kerr, B. D., Flatt, Peter, Holscher, Christian and Gault, Victor (2010) Four weeks administration of Liraglutide improves memory and learning as well as glycaemic control in mice with high fat dietary-induced obesity and insulin resistance. DIABETES OBESITY & METABOLISM, 12 (10). pp. 891-899. [Journal article]
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Methods: Young Swiss TO mice maintained on high fat diet for 20 weeks received twice-daily injections of Liraglutide (200 mu g/kg bw; sc) or saline vehicle over 28 days. An additional group of mice on standard diet received twice-daily saline injections. Energy intake, bodyweight, non-fasting plasma glucose and insulin concentrations were monitored at regular intervals. Glucose tolerance, open field assessment, object recognition testing and electrophysiological long-term potentiation (LTP) were performed at termination of the study. Results: Liraglutide treatment resulted in significant time-dependent reduction in bodyweight and energy intake, whilst improving non-fasting glucose and normalizing glucose tolerance. Although Liraglutide did not alter general behaviour, treated mice exhibited marked increase in recognition index (RI) during object recognition testing, indicative of enhanced learning and memory ability. Furthermore, Liraglutide rescued the deleterious effects of high fat diet on hippocampal LTP of neurotransmission following both chronic and direct intracerebroventricular (icv) administration. Conclusion: Liraglutide administered peripherally not only improves metabolic parameters but exerts additional beneficial effects on cognitive function and hippocampal synaptic plasticity. Whether therapy with GLP-1 mimetics has similar effects in humans with type 2 diabetes needs to be established.
|Item Type:||Journal article|
|Faculties and Schools:||Faculty of Life and Health Sciences|
Faculty of Life and Health Sciences > School of Biomedical Sciences
|Research Institutes and Groups:||Biomedical Sciences Research Institute > Genomic Medicine|
Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Genomic Medicine > Neuroscience & Neurodegenerative Diseases
Biomedical Sciences Research Institute > Diabetes
|Deposited By:||Dr Nigel Irwin|
|Deposited On:||08 Dec 2010 14:41|
|Last Modified:||08 Dec 2010 14:41|
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