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DISCUSSION: Citicoline is cytidine 5'-diphosphate choline. Citicoline plays a crucial role in the Kennedy pathway, by which the body synthesizes phosphatidylcholine (PC) and, ultimately, other phospholipids, such as phosphatidylserine (PS). By supporting the body's synthesis of new phospholipids in youthful, physiological balance, Citicoline supports brain structure. Extensive research supports the role of Citicoline in supporting optimal cognitive function. | ||||||
| 60 Vegi-Caps AOR07005 100% Vegetarian SUPPLEMENT FACTS: Serving Size: 1 Capsule
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*Dietary Reference Intake not established. Other ingredients: microcrystalline cellulose. Capsule: hypromellose, water. AOR guarantees that no ingredients not listed on the label have been added to the product. Contains no wheat, gluten, corn, nuts, dairy, soy, eggs, fish or shellfish. Suggested Use Main Applications Source Pregnancy / Nursing Cautions The information and product descriptions appearing on this website are for information purposes only, and are not intended to provide medical advice to individuals. Consult with your physician if you have any health concerns, and before initiating any new diet, exercise, supplement, or other lifestyle changes. Any reproduction in whole or part and in print or electronic form without express permission is strictly forbidden. Permission to reproduce selected material may be granted by contacting AOR Inc. Copyright © 2005, Advanced Orthomolecular Research |
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Citicoline (cytidine diphosphate choline, or CDP-choline) is not just a source of choline, the main building block of the neurotransmitter acetylcholine. Instead, Citicoline is a brain phospholipid booster. The most popular and well-known brain phospholipid supplement is phosphatidylserine (PS). But brain function relies on a wide spectrum of phospholipids, and not just PS. Of course, PS supplements contain small amounts of some of the other key brain phospholipids, such as (phosphatidylcholine [PC] and phosphatidylinositol [PI]). But they don't contain these nutrients, in the same proportions as are found in a healthy, functioning brain. Taking individual phospholipids, such as PS, forces more of the specific phospholipid that you're taking into the membranes of nerve and other cells. But it cannot restore the youthful balance of all brain phospholipids. |
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By contrast, Citicoline works by enhancing the brain's ability to synthesize its own phospholipids. Citicoline's real "business end" is its cytidine group. Taking Citicoline delivers cytidine to the brain, where it is transformed into cytidine diphosphate (CDP). CDP plays a key role in the body's production of the brain's phospholipids. Studies show that cytidine itself, or cytidine delivered as Citicoline, boosts brain and neural PS by 37.2%, PC by 22-30%, PI by 16%, and PE by 11-13%. By supporting the brain's ability to make its own phospholipids, Citicoline increases levels of all phospholipids in neural membranes - yet the healthy, youthful proportions of the various phospholipids are not altered. At the same time, new research suggests that Citicoline allows the body to make better use of phospholipids derived directly from the diet or supplements. When you take phospholipid supplements, the fatty acid "tails" have to be modified as they are taken from the blood, then brought into the cell's outer membrane, so that they meet the specific needs of the local tissue. Studies in isolated neuron precursor cells show that Citicoline selectively enhances the ability of phospholipids to incorporate a variety of fatty acids into their "tails," facilitating this "customization" process. As well, Citicoline increases the manufacture or release of key neurotransmitters, including acetylcholine, norepinephrine, dopamine, and serotonin. Controlled human studies prove that Citicoline provides effective nutritional support in a wide range of cognitive disorders - a broader range than other phospholipids-based nutritional supplements such as PS. Trials have documented the powerful support provided by Citicoline supplementation in Alzheimer's disease, stroke, dementia associated with Parkinson's disease, and head trauma, and that it improves the odds of a good outcome after high-risk brain surgery. Most importantly for most healthy people looking to maintain, protect, boost, or restore healthy brain function, double-blind, placebo-controlled trials have also shown that Citicoline significantly improves memory function in persons with "normal" age-associated memory impairment (AAMI). In one such trial, older subjects who were experiencing problems with their memory, but who were not suffering dementia, were tested on a battery of memory tests, and found to perform more poorly than young controls. Then the subjects were given each of four treatments, for four weeks each, at different times. All volunteers underwent three periods with different Citicoline regimens (a high (1000 mg) or moderate (500 mg) dose of Citicoline, or a lower (300 mg) dose combined with nimodipine (a blood pressure drug also used to treat some neurological deficits)). Subjects also underwent a dummy-pill phase. The results showed that Citicoline significantly improves performance on several memory tasks, including the free recall of word lists and the ability to remember a set of objects (either immediately after seeing them or later on). All Citicoline groups showed some improvement over the course of the trial. The only side effects were a decrease in blood pressure, and immunomodulatory effects shown as minor changes in the populations of white blood cells. Citicoline was also tested in AAMI in a randomized, double-blind, placebo-controlled trial run by MIT in conjunction with US Army Research Institute of Environmental Medicine. In the first phase, ninety-five older volunteers with no active psychiatric or neurological disorders, and who were within the normal range on tests of mental status, were randomly assigned to take either a dummy pill or Citicoline for three months. The subjects with poorer memory at baseline showed improvements in recall (remembering details of a story heard one half hour previously). Subjects who began the study with poorer memories were then used in an additional study, in which they received one of two high doses of Citicoline for two months each. The higher dosage of Citicoline was "clearly associated with improved immediate and delayed logical memory." And while some side effects were reported, the incidence of side effects was actually higher in the placebo group than in people taking Citicoline! A team of researchers at McLean Hospital in Belmont recently tested the effects of a six week supplementation of Citicoline. Volunteers were given an MRI at the beginning and end of the six week period to observe any changes. They found that supplies of brain energy were increased in critical regions of the brain. Does "PS" Even Work? Now, the first proper, double-blind, placebo-controlled trial using soy-derived PS has been performed. The results clearly show that unlike the original brain-derived PS supplements, the soy-based "PS" you can buy in capsules or softgels at health food stores today actually doesn't work any better than dummy pills at supporting memory or other aspects of brain function. Neurons Beyond the Brain Likewise, amblyopia, or "lazy eye," is ultimately a neurological disorder, although always associated with some other problem with visual function (such as a misalignment of the focus of the two eyes). Amblyopia develops when the nerve cells, which connect one eye to the brain are literally turned off, because the sensory messages the poorer eye is sending don't match up with those being sent by the dominant eye. After years of being deactivated, the nerves leading to the amblyopic eye can ultimately cause that eye to go fully blind. Again, Citicoline may offer hope. Italian researchers have performed several trials in patients with amblyopia, which have confirmed that Citicoline significantly improves both symptoms and neurological function, and can be used to increase the effectiveness of occlusion (the standard therapy for "lazy eye"). With ongoing research, we may expect the fulfillment of some present promises, and the discovery of new applications for this remarkable nutrient. Bring the Balance Back References Secades JJ, Frontera G. CDP-choline: pharmacological and clinical review. Methods Find Exp Clin Pharmacol. 1995 Oct; 17 Suppl B: 1-54. Spiers PA, Myers D, Hochanadel GS, Lieberman HR, Wurtman RJ. Citicoline improves verbal memory in aging. Arch Neurol. 1996 May; 53(5): 441-8. Alvarez XA, Laredo M, Corzo D, Fernandez-Novoa L, Mouzo R, Perea JE, Daniele D, Cacabelos R. Citicoline improves memory performance in elderly subjects. Methods Find Exp Clin Pharmacol. 1997 Apr; 19(3): 201-10. Eberhardt R, Birbamer G, Gerstenbrand F, Rainer E, Traegner H. Citicoline in the treatment of Parkinson's disease. Clin Ther. 1990 Nov-Dec; 12(6): 489-95. Clark WM, Warach SJ, Pettigrew LC, Gammans RE, Sabounjian LA. A randomized dose-response trial of citicoline in acute ischemic stroke patients. Neurology. 1997 Sep; 49(3): 671-8. Alvarez XA, Mouzo R, Pichel V, et al. Double-blind placebo-controlled study with citicoline in APOE genotyped Alzheimer's disease patients. Effects on cognitive performance, brain bioelectrical activity and cerebral perfusion. Methods Find Exp Clin Pharmacol. 1999 Nov; 21(9): 633-44. Rejdak R, Toczolowski J, Kurkowski J, Kaminski ML, Rejdak K, Stelmasiak Z, Grieb P. Oral citicoline treatment improves visual pathway function in glaucoma. Med Sci Monit. 2003 Mar; 9(3): PI24-8. The information and product descriptions appearing on this website are for information purposes only, and are not intended to provide medical advice to individuals. Consult with your physician if you have any health concerns, and before initiating any new diet, exercise, supplement, or other lifestyle changes. Any reproduction in whole or part and in print or electronic form without express permission is strictly forbidden. Permission to reproduce selected material may be granted by contacting AOR Inc. Copyright © 2005, Advanced Orthomolecular Research |
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CDP-choline reduces dopaminergic cell loss induced by MPP(+) and glutamate in primary mesencephalic cell culture. The information and product descriptions appearing on this website are for information purposes only, and are not intended to provide medical advice to individuals. Consult with your physician if you have any health concerns, and before initiating any new diet, exercise, supplement, or other lifestyle changes. Any reproduction in whole or part and in print or electronic form without express permission is strictly forbidden. Permission to reproduce selected material may be granted by contacting AOR Inc. Copyright © 2005, Advanced Orthomolecular Research |
New Brain Research Finds Nutrient Suppresses Craving
Citicoline May Support Goals for Weight Loss via Appetite Suppression
January 5, 2010
New York, NY – The obesity crisis in the United States has now grown to epidemic proportion. And as the list of consequential health conditions and diseases continues to expand as well, there are major movements toward helping Americans lose weight. Perhaps the next ally in battling poor appetite control is a vitamin-like nutrient called citicoline. Scientists at McLean Hospital and professors at Harvard Medical School have explored the effects of Cognizin® citicoline supplementation on the neurobiological systems involved in appetite and eating behavior regulation and found the potential to reduce cravings and increase feelings of satiety. This work was published in the January issue of the International Journal of Eating Disorders.
While an Associate Professor of Psychiatry at Harvard Medical School and McLean Hospital, and researcher on this study Deborah Yurgelun-Todd PhD, monitored the effect of nutrients such as citicoline on the dopamine neurons in the brain, which have been shown to have a direct effect on the motivation to eat and the rewarding value of food. She explains, "We know that appetitive responses are highly regulated by homeostatic mechanisms in the hypothalamus portion of the brain, including hormones and dopamine. Previous research has measured the effect that hormones and dopamine - and nutrients like citicoline that may increase these compounds - may have in a variety of substance abuse and addictive behavior disorders such as cocaine addiction and pathological gambling. In this latest study, we applied a similar set of theories to study citicoline and both regulation of food intake and motivation to eat."
This study compared the effects of open label treatment with citicoline at two different dosages (500 mg/day versus 2,000 mg/day) for six weeks on changes in appetite ratings (using questionnaires), weight, and brain response to images of high-calorie foods (using magnetic resonance imaging). In the stimulation phases of the study, at baseline and following the 6-week treatment, participants were monitored via MRI while viewing a series of colorful visuals that included both high-calorie foods and non-food objects in a quick 150-second series of photos. Each image was viewed for a brief, three seconds. Study participants included 16 healthy adults (8 men, 8 women) ranging from 40 to 57 years of age, and across a range of Body Mass Index values from 20 to 38.
Appetite ratings did decline significantly for the group as a whole, as assessed by questionnaire responses. The decline for the high-dose group did reach significance, however the low-dose group did not. There was no significant weight change in weight for either group overall, although individuals did show weight loss. "The most interesting findings are that with the use of brain imaging studies, we are able to visualize the differences between baseline and after 6-weeks of citicoline supplementation. Scans from the high-dose group illustrate the shift in how their brains interpreted the food images," explains Yurgelun-Todd, now the Director of the Cognitive Neuroimaging Laboratory and The Brain Institute at the University of Utah.
There are three regions of the brain that are particularly relevant to appetite control and behavioral inhibition: the lateral orbitofrontal cortex, the insular cortex and the amygdala. In a direct correlation, those high-dose participants who had the greatest activation of these three portions of the brain saw the greatest decline in appetite for high-calorie foods. "The citicoline may have affected their appetite by stimulating regions of the brain used to normalize or regulate their response to the food images. These three regions may help the participant see food as less rewarding, and therefore have a lesser desire to eat it," added Yurgelun-Todd.
Citicoline has a number of different mechanisms of action, and it has yet to be determined which may be responsible for the changes in brain responses. The vitamin-like nutrient has been known to function as a precursor of phospholipid and acetylcholine synthesis; citicoline also enhances of the release of neurotransmitters such as norepinephrine and increased synthesis of phospholipids including cardiolipin and sphingomyelin. Citicoline has also been recognized for neuroprotective effects with stroke or other brain injuries, protection from cognitive decline. Though this research is still preliminary, researchers will continue to investigate whether these effects are related to citicoline properties, or from the effect citicoline has on the dopamine or other systems.
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