Neuroleptics
Ref. has questioned neuroleptics. Unfortunately this article does not appear to have been translated into English. I have always felt that the brain atrophy was due to the chemical imbalances. However, there is a point of view that it is caused by the medication. Brain atrophy was reported before the medications were invented, so it could be a bit of both.
Efficacy
"The addition of aripiprazole to risperidone or quetiapine was not associated with improvement in psychiatric symptoms but was generally safe and well tolerated."
(2)
This article doesn't say much for the efficacy of these drugs. There appears to be no efficacy.
Schizophrenia
Ref. 3 appears to implicate increased tryptophan metabolism in schizophrenia.
"The discovery of increased cortical KYNA levels in schizophrenia prompted the hypothesis that elevated KYNA concentration may underlie the working memory dysfunction observed in this population that has been attributed to altered glutamatergic and/or cholinergic transmission." (3)
There are a wide variety of theories for schizophrenia (4, 5, 6, 7).
Alzheimer's Disease
Ref. 8 reports abnormal tryptophan metabolism in Alzheimer's disease. Tryptophan metabolites were high.
"Blockade of NMDA receptors by KYNA may be responsible for impaired memory, learning and cognition in AD patients." (8)
"However, KYNA was increased significantly in the putamen and caudate nucleus of AD, by 192 and 177%, respectively." (8)
Various Neuropsychiatric Disorders
Ref. 9 reported hypercatabolism of tryptophan in a variety of "neuropsychiatric disorders". This means that there was excessive metabolism of tryptophan as measured by excessive metabolites of it. This brilliant report by neurologists from India appears to have been largely ignored in the US except by myself.
There is also a glutamate theory for schizophrenia. Glutamate has been found to be high in the brain. Both theories may be true. More than one amino acid could be involved.
Conclusions
Treatments are controversial. Ref. 10 advocates the use of healing foods. Ref. 11 advocates the use of micronutrients. Refs. 12-15 discuss psychiatric drugs and the use of diets.
My own theory is that a low tryptophan diet should be considered because there is substantial evidence of excessive tryptophan metabolism in the various forms of mental disease.
References
1. Lakartidningen. 2009 Oct 14-20;106(42):2704. [Important to scrutinize alarming findings about neuroleptics and brain atrophy].
2. J Clin Psychiatry. 2009 Oct;70(10):1348-57. A multicenter, randomized, double-blind, placebo-controlled, 16-week study of adjunctive aripiprazole for schizophrenia or schizoaffective disorder inadequately treated with quetiapine or risperidone monotherapy. Kane JM, Correll CU, Goff DC, Kirkpatrick B, Marder SR, Vester-Blokland E, Sun W, Carson WH, Pikalov A, Assunção-Talbott S.
3. Elevations of endogenous kynurenic acid produce spatial working memory deficits. Chess AC, Simoni MK, Alling TE, Bucci DJ. Schizophr Bull. 2007 May;33(3):797-804. Epub 2006 Aug 18.
4. Coyle JT, Tsai G, Goff D. Converging evidence of NMDA receptor hypofunction in the pathophysiology of schizophrenia. Ann N Y Acad Sci. 2003;1003:318-327.
5. Woodruff-Pak DS, Gould TJ. Neuronal nicotinic acetylcholine receptors: involvement in Alzheimer's disease and schizophrenia. Behav Cogn Neurosci Rev. 2002;1:5-20.
6. Schwarcz R, Rassoulpour A, Wu H-Q, Medoff D, Tamminga CA, Roberts RC. Increased cortical kynurenate content in schizophrenia. Biol Psychiatry. 2001;50:521-530.
7. Erhardt S, Blennow K, Nordin C, Skogh E, Lindstrom LH, Engberg G. Kynurenic acid levels are elevated in the cerebrospinal fluid of patients with schizophrenia. Neurosci Lett. 2001;313:96-98.
8. Baran H, Jellinger K, Deecke L. Kynurenine metabolism in Alzheimer's disease. J Neural Transm. 1999;106:165-181.
9. Neurol India. 2000 Sep;48(3):231-8. Tryptophan and tyrosine catabolic pattern in neuropsychiatric disorders. Ravikumar A, Deepadevi KV, Arun P, Manojkumar V, Kurup PA.
10. www.associatedcontent.com/article/2501095/healing_foods.html
11. www.associatedcontent.com/article/2496855/micronutrient_research_little_miracle.html
12. www.associatedcontent.com/article/2473238/psychiatric_drug_side_effects.html
13. www.associatedcontent.com/article/2462506/psychiatric_drugs_gods_or_frauds.html
14. www.associatedcontent.com/article/2456500/depressed_mice.html
15. www.associatedcontent.com/article/2452994/how_the_government_could_save_massive.html
Published by Craig Olson
I have worked at many different jobs including as a scientist, a mental health worker, a physical health worker, etc. I am an advocate for better health care and an advocate for the disabled. View profile
- Tryptophan in MedicineTryptophan is a very important amino acid found in the diet. It is abnormal in a wide variety of diseases and these diseases have psychiatric symptoms.
- High Carbohydrate Diet Affects Tryptophan, Improves ConcentrationUsing the right combination of carbohydrates, tryptophan can be increased resulting in an improved concentration level during periods of high mental stress.
- Scientology, Psychiatry, and CensorshipA short look into Scientology and its relationship with Psychiatry and Censorship.
- Guide to Foods High in TryptophanTryptophan is one of the twenty amino acids that the human needs daily to survive but do you know everything about it?
- Study: New Drug mGlu2/3 Has Antipsychotic Activity in HumansA new drug Metabotropic Glutamate 2/3 shows anti-psychotic activity in humans
- Abnormal Tryptophan Metabolism in Neuropsychiatric Diseases
- Abnormal Tryptophan Metabolism in Depression
- Abnormal Tryptophan Metabolism in Psychiatric Diseases
- Excessive Catabolism of Tryptophan in Mental Diseases
- Tryptophan and Mental Illness
- Tom Cruise Knows Psychiatry: the 2nd Anniversary of the Crap Heard 'Round the World
- Medical Research on Tryptophan



