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FROM MEGABRAIN REPORT VOL. 2 NO. 1 Edited by Michael Hutchison SMART PILLS: THE SECOND GENERATION by Ross Pelton and Lee Overholser From the moment we enter life we are limited by our genetic potential, the genome. But do we realize, either individually or as a species, all of our genetic potential? Pharmacology participates, very modestly, in one of the great efforts of humanity, that of answering Plato's question: "Who are we?" The aim is "to know oneself," but toward what end? It seems to us that the deeper sense of this socratic imperative is to know oneself neither in a narcissistic nor timid fashion, but in order to create oneself. Humankind will not wait passively for millions of years so that evolution can offer a better brain. Mankind must refashion itself by realizing its highest genetic potential in the direction that evolution is taking, that is to say, by increasing the integrative capacity of the forebrain. All things considered, developing a pharmacology of the brain's integrative activity has a place in this great human undertaking. Dr. Corneliu Giurgea, tr. by Lee Overholser. As readers of Megabrain, you are doubtless familiar with the first generation of cognitive enhancing drugs--smart pills--that have been publicized and popularized over the past decade. Since the publication of Mind Food and Smart Pills in 1986 and the appearance of the expanded version in 1989, there has been an exponential growth in research in this area. The first generation of intelligence enhancing drugs generated a great deal of excitement. Not only was there the potential for treating cognitive decline in the elderly, research also indicated that normal healthy individuals could improve memory and learning capabilities. According to Fortune magazine the pharmaceutical industry foresees the probability of a $1- billion-plus per year market for cognitive enhancing drugs. Following the development of piracetam, many pharmaceutical companies began to develop structurally similar nootropics. There is significant ongoing research in three very important areas: A) enhancement of intelligence and the ability to think, B) improvement of memory and learning and C) prevention of brain aging and the loss of cognitive capabilities so that senility doesn't develop or develops at a much later age. This article and the three to follow in future issues of Megabrain Report will bring you up to date on the explosion of activity in this field of research. The development of the second generation of smart pills is now well under way. THE NEED FOR A BETTER BRAIN In a world that demands the integration of ever greater masses of information from a multitude of sources, we cannot get by with a stone age brain. During the course of evolution the mammalian brain has devoted more and more of its cortex to the task of integrating and interpreting sensory information. The forward third of the human brain, the frontal lobes, is devoted entirely to processing information. This area makes plans for the future and handles complex social interactions. In rats the frontal lobes are dedicated to analyzing olfactory input. This human capacity to plan for the future is both a blessing and a curse. Technology has freed us from having to hunt for our food and conquered most infectious diseases. On the other hand the pollution, environmental destruction and the population explosion threaten the existence of all forms of life on the planet. To survive we must enlarge our capacity to handle and integrate information. If ecology is the integrated functioning of life systems, the brain is a similar integrated system that must be enhanced if we are to survive. Dr. Giurgea, the developer of Piracetam, the first nootropic or intelligence-enhancing drug, is a leader in the effort to transcend our genetic limitations. He realized that the real breakthrough represented by Piracetam was that it increased the functioning of the integrative areas of the cortex. The accompanying illustration compares the rat and human brains with the primary sensory and motor areas in black and the associative or integrative areas in white. The difference is obvious. Most of the rat brain is occupied with receiving information and giving orders to the muscles. Most of the human brain is devoted to complex analysis of incoming information. [INSERT ILLUSTRATION HERE] The promise of smart pills is that they will enable us to deal with the incredibly complex problems that are pressing in on us both individually and as a society. Unfortunately, the pharmaceutical industry has not shown a major interest in developing "smart pills" or in preventing brain aging in healthy individuals. Instead, economic forces and FDA policy necessitate a focus on treating diseases. Much of the current research effort concentrates on developing drugs that can treat cognitive impairment due to aging. Nevertheless, many of these drugs show considerable promise for helping healthy people stay smart and think smarter. CATEGORIES OF SMART PILLS Drs. Merlini and Pinza divide cognitive enhancing agents into six categories: nootropics, brain metabolism activators, neuropeptides, cholinergic drugs, cerebral vasodilators and miscellaneous compounds. They reserve the term nootropic for piracetam and its analogs which have a primary influence on intelligence. We will look at each of these categories under three headings: Future Brain, Memory, and Keeping Your Brain Young, according to the major effect of each category of cognitive enhancing agents. FUTURE BRAIN The current situation in the development of smart pills is much like the early years of the space program. The first rockets weren't very impressive, but eventually the benefits from that exploration filtered down to the general public in the form of products like teflon, new and stronger metal alloys, improved computers and other advances. (OK, there was Tang, too. Not every new development was a great leap forward.) Dr. Giurgea's development of piracetam opened the door to a completely unexpected realm. Before then it was inconceivable that there was any drug that could actually make a normal person smarter or improve mental functioning. One of the fascinating features of these new drugs, the nootropics, is that they affect the integrative areas of the brain. Drugs like amphetamines and caffeine speed up most of the neuronal functions. A person feels more alert, but high doses can cause shaking, nervousness and even paranoia. Other psychoactive drugs strongly influence emotional behavior. Alcohol would fall in this category. It not only alters emotions, it also powerfully degrades motor and sensory abilities, as the scene of an angry or euphoric drunk falling downstairs demonstrates. Smart pills have very little influence on areas of the brain other than those that process and integrate information. For this reason they lack the distressing side effects of other mind altering drugs and are among the safest drugs that have ever been developed. They are much safer, in fact, than that most common of drugs--aspirin. Nootropics Piracetam was the first nootropic drug to be discovered. The term "nootropic" literally means "acting upon the mind." Nootropics are a unique class of drugs whose common features include: a) enhancing learning, b) alleviation of impaired learning and memory, c) protection against brain insults, especially oxygen deprivation and d) low toxicity. Much of the excitement driving current research is the possibility that new variants of piracetam and other drugs will have even greater cognitive improving effects. UCB- Pharmaceutical, the Belgian company that originally discovered piracetam, has now developed a new second generation nootropic called ucb L059 which is structurally similar to piracetam, yet possesses considerably more pharmacological activity. Other drugs with a structure somewhat similar to piracteam's 2-pyrrolidinone ring structure are oxiracetam, pramiracetam, etiracetam, aniracetam, propaniracetam, D-pyroglutamic acid, hopantenate, eburnamonine, WEB 1881, ubc L059 and BMY 21502. Aniracetam was effective on nine different tests of learning and memory, whereas piracetam was only effective on six tests. Aniracetam also proved to be ten times more potent in improving test scores than piracetam. In the last few years several compounds have been developed which differed structurally from piracetam, but which showed interesting cognition enhancing effects. This new group includes tenilsetam, rolziracetam, minaprine, bifemelane, indeloxazine, and idebenone. Many of the nootropic drugs are also able to increase the transcallosal flow of electrical information between the left and right hemisphere of the brain. This has been called "Superconnecting" both halves of the brain. When both hemispheres are interacting, creativity is enhanced and the ability to integrate artistic abilities with reasoning is increased. Poor integration between the halves of the brain is implicated in some learning disorders. It has been estimated that up to 10% of school-age children suffer from some type of learning disability. Nootropics man eventually become the treatment of choice for dyslexia and other learning disorders. Brain Metabolism Activators Agents that enhance the metabolism of brain cells are classified as brain metabolism activators or enhancers. They are placed in the Future Brain section because their primary effect is on cognitive abilities. Hydergine is the most famous drug in this category. Newer drugs in this category include acetyl-L-carnitine, phosphatidylserine, derivatives of griseolic acid and naftidrofuryl, to name a few. An interesting effect of phosphatidylserine is that postnatal administration to laboratory animals led to improved memory in adulthood. MEMORY AND LEARNING The TV show Jeopardy is taken by many as a measure of intelligence. Those who remember the most trivial pieces of information are the smartest. This is an idea that has its roots in the way our educational system rewards those with the best memories with good grades since most courses emphasize the acquisition of information in place of creativity and reasoning skills. A good memory can boost overall intelligence since facts and figures are the raw stuff of reasoning. But those with photographic or eidetic memories are rarely able to do much with all the little bits and pieces of information that they fill their brains with. What we forget can be as important as what we remember when it comes to making new discoveries. A little forgetting sorts out the unimportant material so the things that really make a difference stand out. Current evidence points to the synapse as the main storage unit of memory. Previously it was theorized that memories were stored in coded RNA or in specific patterns of synaptic intercon- nections. When animals or people have to learn more, the neurons involved develop more RNA and grow larger dendritic trees with more synapses. However, it now appears that this increased activity supports memory formation by providing more of the medium needed for laying down memories. The actual memories are stored in networks of synapses by changing the sensitivity of groups of synapses to firing when stimulated. Those drugs which favor the facilitation of changes in synaptic sensitivity and supply more neurotransmitter to the synapses will increase the ability to form memories. The Neuropeptides Neuropeptides have multiple functions. They act as neurotransmitters and they also act as modulators or regulators at other sites. Vasopressin is a neuropeptide that is well established as a facilitator of memory. Several analogs of vasopressin have been developed. Interestingly, the vasopressin analog DDAVP has been shown to facilitate memory in men but not in women. Another vasopressin analog, DGAVP has produced improvements in various types of learning. Some of the other neuropeptides that are currently under investigation are the ACTH analogs, thyrotropin releasing hormone (TRH) and its analogs, cholecystokinin-8 (CCK-8) and neuropeptide Y. KEEPING YOUR BRAIN YOUNG The search for drugs that can treat the aging brain is concentrated on those that can reverse the damage that has already occurred. However, when it comes to brain health, an ounce of prevention is definitely worth a pound of cure. Some of the drugs that have a little effect in reducing the effects of Alzheimer's disease and senility are proving more effective in preventing brain aging. Increasing cognitive abilities is useful, but the long term implications of being able to prevent brain aging may ultimately be much more important. Whatever controversy there might be about the value of becoming smarter, there is no debate about the value of not becoming dumber. Much of the damage in the aging brain centers around the synapses. As the number of synapses in the cortex decreases along with the quantity of neurotransmitter for carrying messages, both memory and reasoning abilities enter a slow decline. Maintaining healthy synaptic functioning is the key to keeping your brain young. Cholinergic Drugs Acetylcholine is the neurotransmitter used by about 90% of the brain's cells. Acetylcholine precursors such as choline or lecithin have been somewhat disappointing in the treatment of cognitive decline. Perhaps this is because there has already been too much destruction of brain cells by the time the problem is recognized. Deanol and Lucidril (centrophenoxine) are structurally related to choline and have shown positive memory improving effects in human trials. Lucidril is a particularly exciting drug because it has been shown to produce significant life extension in laboratory animals, restore the synaptic contact zones between brain cells and actually reverse one of the primary processes of brain aging, the build-up of lipofuscin, a form of cellular garbage, in brain cells. An analog of Lucidril, initially named BCE-001, has reportedly shown twice the activity level of Lucidril. Vasodilators Some cognitive decline in the elderly may be due to a decrease in the blood supply to the brain due to arteriosclerosis of "hardening of the arteries" which results in a narrowing of the cerebral blood vessels. So far these drugs have not been very effective, which may indicate that the circulatory problem is not a major cause of the decrease in mental sharpness. Some of the new drugs in this group include vinpocetine, bromvincamine and vincamine. Miscellaneous Compounds There are a few compounds with structures and mechanisms of action that are different from the preceding groups which seem to be able to reverse induced amnesia in laboratory animals or to protect other cerebral functions. Pyritinol is an exciting new drug that has been shown to produce an increase in the regional blood flow within the grey matter of the brain. In elderly patients with diminished mental capacity it activated the dominant frontal lobe and enhanced cerebral electrical activity. In healthy volunteers it improved both psychomotor performance and short-term memory. Deprenyl is another drug that appears to slow the damage caused by Parkinson's and Alzheimer's disease. A substance called MAO-B (monamine oxidase type B) seems to be the culprit in the destruction of nerve cells that causes Parkinson's disease and Deprenyl is an MAO-B inhibitor. At about age 45 the nerve cells that use dopamine as a neurotransmitter enter a period of slow decline. When the dopamine level reaches about 30% of normal,the shaking and other symptoms of Parkinson's show up. The rate of change varies from person to person and those who have a very slow loss of these nerve cells never develop the disease. Dr. Jozef Knoll, the world's most prominent deprenyl researcher recommends the long- term use of deprenyl to prevent the inevitable aging of dopamine producing brain cells. Nerve cells that use dopamine are also involved in producing many of the drives that motivate people. As age lowers the brain's dopamine levels, there is a gradual decline in drives, particularly the male sex drive. This is why patients who take L-dopa for Parkinson's disease often experience a sudden increase in sex drive. This drug is particularly useful because it does not produce the "cheese effect." Other MAO-B inhibitors cause high blood pressure as the neurons begin to take in tyramine from foods such as aged cheese, yeast, beans, chicken liver, herring and certain wines. Not only is deprenyl safe in this regard, but, since the drug was discovered over 30 years ago, no reports of significant side effects have appeared. Dr. Knoll has developed even more selective MAO-B inhibitors, J-508 and U-1424, that do not interfere with other processes such as the normal uptake of MAO-A by nerve cells. These are currently being tested for therapeutic effect. EVOLUTION OR DEVOLUTION? As the demands on our mental capacities increase, we are gaining the capacity to meet the challenge. Scientific advances and technological innovations are creating the communication and information glut that is overwhelming us. At the same time science and technology are giving us ways of speeding up evolution to develop the brain power we need. As the baby boomers enter maturity and life span continues to increase, there will soon be a crisis in dealing with the aging brain. Drugs like deprenyl hold out the promise of preventing brain aging. Other strategies to prevent brain aging include good nutrition and using sound and light technology to exercise and focus the brain. We face a clear choice. Will we use drugs, brain enhancing devices and good nutrition to move forward on the evolutionary ladder or will we be overwhelmed by the information explosion and be forced backwards? This isn't just a question of individual improvement. Our entire society needs all the brain power it can get and the sooner the knowledge of how to increase brain power and prevent brain aging is disseminated, the better. ******** Ross Pelton R.Ph. Ph.D. is a pharmacist, a nutritionist and an educator in the areas of anti-aging and life extension. He is the author of Mind Food and Smart Pills, which is a sourcebook for the vitamins, herbs and drugs that can increase intelligence improve memory and prevent brian aging. He has just finished a new book, Revolution in Cnncer Therapy, which will be published by Simon & Schuster. Lee Overholzer received his Doctorate in Linguistics from the University of Michigan and went on to receive a Masters in Counseling Psychology. He worked with Ross Pelton on his book Mind Food and Smart Pills, and has published his own book on hypnosis. BIBLIOGRAPHY Anderson P.S., and Haubrich, D. "Memory and Learning." In: Annual Reports in Medicinal Chemistry. H.J. Hess (Ed.). Vol. 16, pp. 51- 60. New York: Academic Press, 1981. Beckwith, B.E., et.al. "Vasopressin Analog (DDAVP) Improves Memory in Human Males." Peptides. 1984, Vol. 5, pp. 819-822. Brandeis, R., et al. "Improvement of Cognitive Function by MAO-B Inhibitor L-Deprenyl in Aged Rats." Pharmacology, Biochemistry and Behavior, 1991, Vol 39, pp. 297-304. Bylinsky, G. "Medicine's Next Marvel: The Memory Pill." Fortune. January 20, 1986, pp. 68-72. Cumin, R., et.al. "Effects of the Novel Compound Aniracetam (Ro 13-5057) Upon Impaired Learning and Memory in Rodents." Psychopharmacology. 1982, Vol. 78, pp.104-111. Fagioli, S., et. al. "Phosphatidylserine administration during postnatal development improves memory in adult mice." Neuroscience Letters. 1989, Vol. 101, pp. 229-233. Giuli, D., et. al. "Morphometric Studies on Synapses of the Cerebellar Glomerulus: The Effect of Centrophenoxine Treatment in Old Rats." Mechanisms of Aging and Development. 1980, Vol. 14, pp. 265-71. Giurgea, C. "Vers une Pharmacologie de l'Activite Integrative du Cerveau. Tentative du Concept Nootrope en Psychopharmacologie." Actualities Pharmacologique. 1972, Vol. 25, pp. 115-117. Herrmann, W.M., et. al. "On the Effects of Pyritinol on Functional Deficits of Patients with Organic Mental Disorders." Pharmacological Psychiatry. 1986, Vol. 19, pp. 378-385. Hochschild, R. "Effect of Eimethylamionethyl p-Chlorophenocy- acetate on the Life Span of Male Swiss Webster Albino Mice." Experimental Gerontology. 1973, Vol. 8, pp. 177-83. Knoll, J. "The Possible Mechanisms of Action of Deprenyl in Parkinson's Disease." Journal of Neural Transmission. Vol. 43, 1978, pp. 177-198. Merlini, L., and M. Pinza. "Trends In Searching For New Cognition Enhancing Drugs." Progress in Neuro-Psychopharmacology & Biological Psychiatry. 1989, Vol. 13, pp. S61-S75. Nagy, Zs., et al. "Effect of Centrophenoxine and BCE-001 Treatment on Lateral Diffuciton of Proteins in the Hepatocyte Plasma Membrane as Revealed by Fluorescence Revocery after Photobleaching in Rat Liver Smears." Experimental Gerontology. 1989, Vol. 24. pp. 317-330. Nandy, K. and Bourne, G.H. "Effects of Centrophenoxine on the Lipofuscin Pigments of the Neurones of Senile Guinea Pigs." Nature. 1966, Vol. 210, pp. 313-14. Peabody, C.A., et.al. "Desgylcinamide-9-Arginine-8-Vasopressin (DGAVP, Organon 5667) in Patients with Dementia." Neurobiology of Aging. 1985, Vol. 6, pp. 95-100. Pelton, R., and Pelton, T. Mind Food and Smart Pills: A Sourcebook for the Vitamins, Herbs, and Drugs that can Increase Intelligence, Improve memory, and Prevent Brain Aging. New York: Doubleday, 1989. Salo, P.T., and Tatton, W.G. "Deprenyl Reduces the Death of Notoneurons Caused by Axotomy." Journal of Neuroscience Research. 1992, Vol. 31, pp. 394-400. Schindler, U. "Pre-Clinical Evaluation of Cognition Enhancing Drugs." Progress in Neuro-Psychopharmacology & Biological Psychiatry. 1989, Vol. 13, pp. S99-S115. Till, R.E., and Beckwith, B.E. "Sentence Memory Affected by Vasopressin Analog (DDAVP) in Cross-Over Experiment." Peptides. 1985, Vol. 6, pp. 397-402. Wulfert, R., et.al. "Facilitation of Calcium-Dependent Cholinergic Function by ucb L059, a New 'Second Generation' Nootropic Agent." Psychopharmacology Bulletin. 1989, Vol. 25, No. 3, pp. 498-502. HOW TO OBTAIN MEGABRAIN DRUGS BY MAIL ORDER Many of the substances described by Dr. Pelton (and those explored in "Cognition-Enhancement Drugs and Peak Performance Pills," by John Morgenthaler and Michael Hutchison, in Megabrain Report #1) are not available in the U.S., or are available only by prescription. However, it is legal to obtain these substances by mail order. One reason some of these substances are not available in the U.S. is that they have not yet gone through the extraordinarily expensive and lengthy process required to obtain FDA approval. This does not mean however that it is not quite legal to use these substances. And some of the substances have been approved by the FDA for limited medical applications. This does not mean that it is not quite proper to use these substances for "unapproved" or "off-label" purposes. In the April, 1982 issue of the FDA Drug Bulletin, the agency included a policy statement clarifying the question of "unapproved" uses for drugs, clearly stating that "'unapproved' uses may be appropriate and rational in certain circumstances, and may, in fact, reflect approaches to drug therapy that have been extensively reported in medical literature. . . . Valid new uses for drugs already on the market are often first discovered through serendipitous observations and therapeutic innovations." In sum, the FDA clearly approves of the "unapproved" uses as an important means for innovation and discovery. Also, though it is not widely known, a July, 1989 FDA ruling now makes it quite legal to import effective drugs used elsewhere but not available in the U.S. The FDA now allows the importation and mail shipment of a three month supply of drugs, for personal use, as long as they are regarded as safe in other countries. The new ruling, FDA pilot guidelines chapter 971, was made as a result of heavy pressure from AIDS political action groups, which insisted AIDS sufferers were denied access to potentially life-saving substances that were widely used abroad but were still unapproved for use in the U.S. The drugs discussed here, as well as the many other cognition enhancing nutrients described in MBR #1 can be purchased without a prescription. When you write to place an order, we recommend you send a signed letter, so that it can be returned with your shipment. This letter should include your name, address and phone number, and your doctor's name, address and phone number. Cognition Enhancement Research Institute (CERI) suggests that the letter "should also state the following: 1) that the drug is for personal use only, 2) that the amount is within the personal-use guideline (3 months' supply), 3) that the drug is not approved in the United States, 4) that you were responsible for requesting the drug, 5) that the company shipping it to you did not engage in promotional activities related to the drug or you, 6) that your doctor will be supervising your use of the drug (provide a photocopy of the prescription, if you have one), and 7) that the drug is for treating a life-threatening or debilitating condition (you may or may not want to detail your medical condition. . . . The FDA regulations specify that the drug must be for a life- threatening or debilitating condition. If you are basically healthy, you might want to avoid the details of your medical reason for ordering the drug. If they insist, you can always argue that you are suffering from age-related mental decline (a debilitating illness) or from aging (a life-threatening illness)." A sample letter suggested by CERI is: To whom it may concern: This letter is to confirm that the enclosed medication has been obtained for my personal use under the FDA personal importation policy for life-threatening or debilitating illnesses. My physician, Dr. [name], will be providing medical supervision for my use of the drug. I have purchased the drug from [company] on my own initiative; no promotional activities on their part were involved in this transaction. If you have further questions, please call at your earliest opportunity. I appreciate any efforts you can make to expedite arrival of this important medical treatment. [Your name, address, phone number] [Your doctor's name, address, phone number] Such a letter will in all probability never be necessary. I have heard of only a few cases in which shipments were detained. However, as this is written, the FDA's future policy on the importation of of smart drugs from abroad cannot be predicted. For information about smart nutrients in various formulations available in the U.S., write: Michael Hutchison MEGABRAIN PO BOX 2744 Sausalito, CA 94966 DISCLAIMER/WARNING The information in the accompanying articles about smart drugs is not intended to provide medical advice. It is intended to be educational and informational only. Please consult with a health professional for medical advice. The author and editor are not recommending that anyone use any of the substances described, but rather are presenting and seeking information. Adequate studies of both long and short term effects of some of these substances have not been performed, some of them can have adverse side effects, and all humans have different biochemical natures and sensitivities, so that safe dosages of some of these substances may vary enormously from individual to individual. Also, some of these substances may be dangerous for individuals not in sound mental and physical health. As a result, we recommend that anyone interested in experimenting with these substances do so with caution and under the supervision of a medical professional. We strongly recommend that children and pregnant or lactating women should not experiment with these substances under any circumstances.