Haven't posted up some research for a while.. this was interesting:
http://www.researchg...ponses_in_vitro A specific multi-nutrient formulation enhances M1 muscarinic acetylcholine receptor responses in vitroPaul Jm Savelkoul,
Mandy Mp Merkes,
Helena Janieckova,
Almar Am Kuipers,
Robert Jj Hageman,
Patrick J Kamphuis,
Vladimir Dolezal,
Laus M BroersenNutricia Advanced Medical Nutrition, Danone Research, Centre for Specialised Nutrition, Wageningen, The Netherlands Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic Utrecht Institute for Pharmaceutical Sciences (UIPS), University Utrecht, The Netherlands.
Journal of neurochemistry (impact factor: 4). 12/2011; DOI: 10.1111/j.1471-4159.2011.07616.x
AbstractRecent evidence indicates that supplementation with a specific combination of nutrients may affect cell membrane synthesis and composition. In order to investigate whether such nutrients may also modify the physical properties of membranes, and affect membrane-bound processes involved in signal transduction pathways, we studied the effects of nutrient supplementation on G protein-coupled receptor (GPCR) activation in vitro. In particular, we investigated muscarinic receptors, which are important for the progression of memory deterioration and pathology of Alzheimer's disease. Nerve Growth Factor (NGF) differentiated pheochromocytoma cells (PC12) that were supplemented with specific combinations of nutrients showed enhanced responses to muscarinic receptor agonists in a membrane potential assay. The largest effects were obtained with a combination of nutrients known as Fortasyn™ Connect (FC), comprising docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA), uridine monophosphate (UMP) as a uridine source, choline, vitamin B6, vitamin B12, folic acid, phospholipids, vitamin C, vitamin E, and selenium. In subsequent experiments it was shown that the effects of supplementation could not be attributed to single nutrients. In addition, it was shown that the agonist-induced response and the supplement-induced enhancement of the response were blocked with the muscarinic receptor antagonists atropine, telenzepine, and AF-DX 384. In order to determine whether the effects of FC supplementation were receptor subtype specific, we investigated binding properties and activation of human muscarinic M1, M2 and M4 receptors in stably transfected Chinese hamster ovary (CHO) cells after supplementation. Multi-nutrient supplementation did not change M1 receptor density in plasma membranes. However, M1 receptor-mediated G protein activation was significantly enhanced. In contrast, supplementation of M2- or M4-expressing cells did not affect receptor signaling.
Taken together, these results indicate that a specific combination of nutrients acts synergistically in enhancing muscarinic M1 receptor responses, probably by facilitating receptor-mediated G protein activation.