Hallucinogens, potential endogenous psychotogens, and related biochemicals sorted by E-state value of N1 and/or Scar2
Compound
E-state of key N1
Scar2
Ratio* Scar to E-state of N
Evidence for effective dose (µg)
Adrenochrome
1.765
4.25
2.41
n.d.
5-methyl-THF
1.815
5.66
3.12
mixed3
LSD
1.945
27.60
14.19
100
Psilocybin
2.043
14.04
6.87
4,000
N-methyl-norsalsolinol
2.193
10.40
4.74
n.d.
N-acetylmescaline**
2.208
5.67
2.57
n.d.
Dimethyltryptamine
2.211
21.00
9.50
14,000
N-methyl-salsolinol
2.235
11.99
5.36
n.d.
Rows above sorted4 on E-state of key N1, rows below sorted on E-state of key N1 (+) Scar
PCP
2.811
27.11
9.64
1,000
Ketamine
3.197
14.29
4.47
70,000
Tryptamine
5.500
15.79
2.87
none
Mescaline
5.500
13.02
2.37
200,000
Serotonin
3.134
12.26
3.91
none
Tryptophan
3.084
11.09
3.60
none
Salsolinol
3.292
9.60
2.92
n.d.
N-methyldopamine
3.006
9.36
3.11
n.d.
Phenylalanine
5.349
8.92
1.67
none
Norsalsolinol
3.195
8.07
2.53
n.d.
Dopamine
5.305
6.73
1.27
none
Epinephrine
2.806
5.90
2.10
none
Tyrosine
5.325
5.64
1.06
none
Norepinehrine
5.198
3.43
0.66
none
Arginine
3.680
–0.43
–0.12
n.d.
Homocysteine
5.079
–0.75
–0.15
none
1 N represents the amide, tertiary, secondary or primary amine identified as the most conformationally flexible [266]. 2 Scar represents the total E-state value for carbons in the molecule. 3 In the presence of a B12 deficiency, administration of ≥ 1,000 µg/day of 5-methyl-THF or other folates could be problematic in otherwise normal individuals or those with psychosis [136, 221]. 4 The compounds were sorted from low to high values of the E-state of key N up to values < 2.5; from values of 2.5 to 3.2 they were sorted on E-state and then from high to low values of Scar; from values of E-state of 3.2 and above, they were sorted on Scar only (see text). * The ratio of Scar to E-state of N is of interest because of the potential interaction between the two variables. ** The E-state value of N for N-acetylmescaline predicted by ChemSAR (http://chemsar.scbdd.com/calcdes/index/) involved 3 possibilities: tertiary amine, double-stranded, and an aromatic component; the results were averaged to represent all 3 characteristics
Declarations
Acknowledgments
I would like to extend my deep gratitude to Sebastian Colwell and to Spencer Pittman (Technologic Computer Services) for their assistance with computer program selection and performance.
The author has no conflict of interest to declare, has no commercial product related to this work, and holds no patents related to this work, nor are any under development at this time.
Ethical approval
Not applicable.
Consent to participate
Not applicable.
Consent to publication
Not applicable.
Availability of data and materials
Where relevant, the site for availability of analytical tools is listed in the text.
Grayson DR, Chen Y, Dong E, Kundakovic M, Guidotti A. From trans-methylation to cytosine methylation: evolution of the methylation hypothesis of schizophrenia.Epigenetics. 2009;4:144–9. [DOI] [PubMed]
Miller CL. The Epigenetics of Psychosis: A Structured Review with Representative Loci.Biomedicines. 2022;10:561. [DOI] [PubMed] [PMC]
Oliveira CD, Okai GG, da Costa JL, de Almeida RM, Oliveira-Silva D, Yonamine M. Determination of dimethyltryptamine and β-carbolines (ayahuasca alkaloids) in plasma samples by LC-MS/MS.Bioanalysis. 2012;4:1731–8. [DOI] [PubMed]
Dean JG. Indolethylamine-N-methyltransferase Polymorphisms: Genetic and Biochemical Approaches for Study of Endogenous N,N,-dimethyltryptamine.Front Neurosci. 2018;12:232. [DOI] [PubMed] [PMC]
Rosengarten H, Friedhoff AJ. A review of recent studies of the biosynthesis and excretion of hallucinogens formed by methylation of neurotransmitters or related substances.Schizophr Bull. 1976;2:90–105. [DOI] [PubMed]
Ebara S. Nutritional role of folate.Congenit Anom (Kyoto). 2017;57:138–41. [DOI] [PubMed]
Milman N. Intestinal absorption of folic acid - new physiologic & molecular aspects.Indian J Med Res. 2012;136:725–8. [PubMed] [PMC]
Froese DS, Fowler B, Baumgartner MR. Vitamin B12, folate, and the methionine remethylation cycle-biochemistry, pathways, and regulation.J Inherit Metab Dis. 2019;42:673–85. [DOI] [PubMed]
Smythies JR, Alarcon RD, Morere D, Monti JA, Steele M, Tolbert LC, et al. Abnormalities of one-carbon metabolism in psychiatric disorders: study of methionine adenosyltransferase kinetics and lipid composition of erythrocyte membranes.Biol Psychiatry. 1986;21:1391–8. [DOI] [PubMed]
Romero JA, Abdelmoumen I, Hasbani D, Khurana DS, Schneider MC. A case of 5,10-methenyltetrahydrofolate synthetase deficiency due to biallelic null mutations with novel findings of elevated neopterin and macrocytic anemia.Mol Genet Metab Rep. 2019;21:100545. [DOI] [PubMed] [PMC]
Froese DS, Wu X, Zhang J, Dumas R, Schoel WM, Amrein M, et al. Restricted role for methionine synthase reductase defined by subcellular localization.Mol Genet Metab. 2008;94:68–77. [DOI] [PubMed] [PMC]
Zhu BT. On the mechanism of homocysteine pathophysiology and pathogenesis: a unifying hypothesis.Histol Histopathol. 2002;17:1283–91. [DOI] [PubMed]
Bracken P, Coll P. Homocystinuria and schizophrenia. Literature review and case report.J Nerv Ment Dis. 1985;173:51–5. [DOI] [PubMed]
Doherty GH. Homocysteine and Parkinson’s Disease: A Complex Relationship.J Neurol Disord. 2013;1:107. [DOI]
Paul R, Borah A. L-DOPA-induced hyperhomocysteinemia in Parkinson’s disease: Elephant in the room.Biochim Biophys Acta. 2016;1860:1989–97. [DOI] [PubMed]
Kaeser AC, Rodnight R, Ellis BA. Psychiatric and biochemical aspects of a case of homocystinuria.J Neurol Neurosurg Psychiatry. 1969;32:88–93. [DOI] [PubMed] [PMC]
Petronijević ND, Radonjić NV, Ivković MD, Marinković D, Piperski VD, Duricić BM, et al. Plasma homocysteine levels in young male patients in the exacerbation and remission phase of schizophrenia.Prog Neuropsychopharmacol Biol Psychiatry. 2008;32:1921–6. [DOI] [PubMed]
Golimbet V, Korovaitseva G, Abramova L, Kaleda V. The 844ins68 polymorphism of the cystathionine beta-synthase gene is associated with schizophrenia.Psychiatry Res. 2009;170:168–71. [DOI] [PubMed]
Colafrancesco G, Di Marzio GM, Abbracciavento G, Stoppioni V, Leuzzi V, Ferrara M. Acute psychosis in an adolescent with undiagnosed homocystinuria.Eur J Pediatr. 2015;174:1263–6. [DOI] [PubMed]
Vann Jones S, Banerjee S, Smith AD, Refsum H, Lennox B. Elevated homocysteine and N-methyl-D-aspartate-receptor antibodies as a cause of behavioural and cognitive decline in 22q11.2 deletion syndrome.Oxf Med Case Reports. 2017;2017:omx076. [DOI] [PubMed] [PMC]
D’Souza DC, DiForti M, Ganesh S, George TP, Hall W, Hjorthøj C, et al. Consensus paper of the WFSBP task force on cannabis, cannabinoids and psychosis.World J Biol Psychiatry. 2022;23:719–42. [DOI] [PubMed]
Misiak B, Frydecka D, Slezak R, Piotrowski P, Kiejna A. Elevated homocysteine level in first-episode schizophrenia patients--the relevance of family history of schizophrenia and lifetime diagnosis of cannabis abuse.Metab Brain Dis. 2014;29:661–70. [DOI] [PubMed] [PMC]
Onozato M, Uta A, Magarida A, Fukuoka N, Ichiba H, Tsujino N, et al. Alterations in methionine to homocysteine ratio in individuals with first-episode psychosis and those with at-risk mental state.Clin Biochem. 2020;77:48–53. [DOI] [PubMed]
Chang KJ, Zhao Z, Shen HR, Bing Q, Li N, Guo X, et al. Adolescent/adult-onset homocysteine remethylation disorders characterized by gait disturbance with/without psychiatric symptoms and cognitive decline: a series of seven cases.Neurol Sci. 2021;42:1987–93. [DOI] [PubMed]
Zhong M, Zhu S, Gu R, Wang Y, Jiang Y, Bai Y, et al. Elevation of Plasma Homocysteine and Minor Hallucinations in Parkinson's Disease: A Cross-Sectional Study.Behav Neurol. 2022;2022:4797861. [DOI] [PubMed] [PMC]
Fan N, Zhao W, Yun Y, Bai L, An H, Zhang Q, et al. Homocysteine levels in first-episode patients with psychiatric disorders. Front Psychiatry. Forthcoming 2024.
Fan N, Tan Y, Yang F, Tian L, Chen S, Li J, et al. Effect of risperidone on serum homocysteine levels in first-episode, drug-naïve patients with schizophrenia.Neurosci Lett. 2017;650:168–73. [DOI] [PubMed]
Xiao J, You Y, Chen X, Tang Y, Chen Y, Liu Q, et al. Higher S-adenosylhomocysteine and lower ratio of S-adenosylmethionine to S-adenosylhomocysteine were more closely associated with increased risk of subclinical atherosclerosis than homocysteine.Front Nutr. 2022;9:918698. [DOI] [PubMed] [PMC]
Ueland PM. Pharmacological and biochemical aspects of S-adenosylhomocysteine and S-adenosylhomocysteine hydrolase.Pharmacol Rev. 1982;34:223–53. [PubMed]
Zhu BT, Liehr JG. Inhibition of catechol O-methyltransferase-catalyzed O-methylation of 2- and 4-hydroxyestradiol by quercetin. Possible role in estradiol-induced tumorigenesis.J Biol Chem. 1996;271:1357–63. [DOI] [PubMed]
Deguchi T, Barchas J. Inhibition of transmethylations of biogenic amines by S-adenosylhomocysteine. Enhancement of transmethylation by adenosylhomocysteinase.J Biol Chem. 1971;246:3175–81. [PubMed]
Silva RXDC, Rocha SP, Souza DPDS, Lima-Maximino MG, Maximino C. Metanalysis of genome-wide association studies for panic disorder suggest pathways and mechanisms of pathogenesis.BioRxiv 326017 [Preprint]. 2018 [2018 May 21]. Available from: https://www.biorxiv.org/content/10.1101/326017v1
Bönig H, Däublin G, Schwahn B, Wendel U. Psychotic symptoms in severe MTHFR deficiency and their successful treatment with betaine.Eur J Pediatr. 2003;162:200–1. [DOI] [PubMed]
Kamath AF, Chauhan AK, Kisucka J, Dole VS, Loscalzo J, Handy DE, et al. Elevated levels of homocysteine compromise blood-brain barrier integrity in mice.Blood. 2006;107:591–3. [DOI] [PubMed] [PMC]
Beard RS Jr, Reynolds JJ, Bearden SE. Hyperhomocysteinemia increases permeability of the blood-brain barrier by NMDA receptor-dependent regulation of adherens and tight junctions.Blood. 2011;118:2007–14. [DOI] [PubMed] [PMC]
Wu Y, Yang X, Li X, Wang H, Wang T. Elevated cerebrospinal fluid homocysteine is associated with blood-brain barrier disruption in amyotrophic lateral sclerosis patients.Neurol Sci. 2020;41:1865–72. [DOI] [PubMed]
Pollak TA, Drndarski S, Stone JM, David AS, McGuire P, Abbott NJ. The blood-brain barrier in psychosis.Lancet Psychiatry. 2018;5:79–92. [DOI] [PubMed]
Greene C, Hanley N, Campbell M. Blood-brain barrier associated tight junction disruption is a hallmark feature of major psychiatric disorders.Transl Psychiatry. 2020;10:373. [DOI] [PubMed] [PMC]
Lizano P, Pong S, Santarriaga S, Bannai D, Karmacharya R. Brain microvascular endothelial cells and blood-brain barrier dysfunction in psychotic disorders.Mol Psychiatry. 2023;28:3698–708. [DOI] [PubMed]
Wu X, Zhang L, Miao Y, Yang J, Wang X, Wang CC, et al. Homocysteine causes vascular endothelial dysfunction by disrupting endoplasmic reticulum redox homeostasis.Redox Biol. 2019;20:46–59. [DOI] [PubMed] [PMC]
Dietrich-Muszalska A, Malinowska J, Olas B, Głowacki R, Bald E, Wachowicz B, et al. The oxidative stress may be induced by the elevated homocysteine in schizophrenic patients.Neurochem Res. 2012;37:1057–62. [DOI] [PubMed] [PMC]
Liwinski T, Lang UE. Folate and Its Significance in Depressive Disorders and Suicidality: A Comprehensive Narrative Review.Nutrients. 2023;15:3859. [DOI] [PubMed] [PMC]
Licata A, Minissale MG, Stankevičiūtė S, Sanabria-Cabrera J, Lucena MI, Andrade RJ, et al. N-Acetylcysteine for Preventing Acetaminophen-Induced Liver Injury: A Comprehensive Review.Front Pharmacol. 2022;13:828565. [DOI] [PubMed] [PMC]
Ye M, Li H, Luo H, Zhou Y, Luo W, Lin Z. Potential Antioxidative Activity of Homocysteine in Erythrocytes under Oxidative Stress.Antioxidants (Basel). 2023;12:202. [DOI] [PubMed] [PMC]
Antoniades C, Shirodaria C, Leeson P, Baarholm OA, Van-Assche T, Cunnington C, et al. MTHFR 677 C>T Polymorphism reveals functional importance for 5-methyltetrahydrofolate, not homocysteine, in regulation of vascular redox state and endothelial function in human atherosclerosis.Circulation. 2009;119:2507–15. [DOI] [PubMed]
Brown HE, Roffman JL. Emerging Treatments in Schizophrenia: Highlights from Recent Supplementation and Prevention Trials.Harv Rev Psychiatry. 2016;24:e1–7. [DOI] [PubMed]
Scriba GK, Hower JA, Liang NY, Fennessey PV, Borchardt RT. Effect of ibopamine and the active metabolite epinine on the catecholamine content of rat hypothalamus and brainstem in vitro.J Pharmacol Exp Ther. 1988;247:609–16. [PubMed]
Ni J, Guo Y, Chang N, Cheng D, Yan M, Jiang M, et al. Effect of N-methyltyramine on the regulation of adrenergic receptors via enzymatic epinephrine synthesis for the treatment of gastrointestinal disorders.Biomed Pharmacother. 2019;111:1393–8. [DOI] [PubMed]
Desai C. Meyler’s side effects of drugs: The international encyclopedia of adverse drug reactions and interactions.Indian J Pharmacol. 2016;48:224. [PMC]
Graham DG. Oxidative pathways for catecholamines in the genesis of neuromelanin and cytotoxic quinones.Mol Pharmacol. 1978;14:633–43. [PubMed]
Roberts A, Bar-Or D, Winkler JV, Rael LT. Copper-induced oxidation of epinephrine: protective effect of D-DAHK, a synthetic analogue of the high affinity copper binding site of human albumin.Biochem Biophys Res Commun. 2003;304:755–7. [DOI] [PubMed]
Remião F, Milhazes N, Borges F, Carvalho F, Bastos ML, Lemos-Amado F, et al. Synthesis and analysis of aminochromes by HPLC-photodiode array. Adrenochrome evaluation in rat blood.Biomed Chromatogr. 2003;17:6–13. [DOI] [PubMed]
Sirota TV. A Chain Reaction of Adrenaline Autoxidation is a Model of Quinoid Oxidation of Catecholamines.Biophysics. 2020;65:548–56. [DOI]
Ziegler MG, Kennedy B, Elayan H. Rat renal epinephrine synthesis.J Clin Invest. 1989;84:1130–3. [DOI] [PubMed] [PMC]
Elayan H, Kennedy B, Ziegler MG. Epinephrine synthesis in rat skin by an N-methyltransferase.Arch Dermatol Res. 1990;282:194–7. [DOI] [PubMed]
Kennedy B, Elayan H, Ziegler MG. Glucocorticoid induction of epinephrine synthesizing enzyme in rat skeletal muscle and insulin resistance.J Clin Invest. 1993;92:303–7. [DOI] [PubMed] [PMC]
Kajita M, Niwa T, Takeda N, Yoshizumi H, Tatematsu A, Watanabe K, et al. Presence of N-methyldopamine in parkinsonian and normal human brains.J Chromatogr. 1993;613:1–8. [DOI] [PubMed]
Nappi AJ, Vass E. Hydroxyl radical formation resulting from the interaction of nitric oxide and hydrogen peroxide.Biochim Biophys Acta. 1998;1380:55–63. [DOI] [PubMed]
Dhalla NS. Formation of Aminochrome Leads to Cardiac Dysfunction and Sudden Cardiac Death.Circ Res. 2018;123:409–11. [DOI] [PubMed]
Hoffer A, Osmond H, Smythies J. Schizophrenia; a new approach. II. Result of a year’s research.J Ment Sci. 1954;100:29–45. [DOI] [PubMed]
Schwarz BE, Sem-Jacobsen CW, Petersen MC. Effects of mescaline, LSD-25, and adrenochrome on depth electrograms in man.AMA Arch Neurol Psychiatry. 1956;75:579–87. [DOI] [PubMed]
Grof S, Vojtechovsky M, Vitek V, Prankova S. Clinical and experimental study of central effects of adrenochrome.J Neuropsychiatr. 1963;4:33–50. [PubMed]
Miller CL. The chemical interaction between adrenochrome, three different classes of antipsychotic drugs and metabolites of the kynurenine pathway.Eur Neuropsychopharmacol. 2015;25:435–40. [DOI] [PubMed]
Miller CL, Llenos IC, Dulay JR, Weis S. Upregulation of the initiating step of the kynurenine pathway in postmortem anterior cingulate cortex from individuals with schizophrenia and bipolar disorder.Brain Res. 2006;1073-1074:25–37. [DOI] [PubMed]
Tanaka M, Spekker E, Szabó Á, Polyák H, Vécsei L. Modelling the neurodevelopmental pathogenesis in neuropsychiatric disorders. Bioactive kynurenines and their analogues as neuroprotective agents-in celebration of 80th birthday of Professor Peter Riederer.J Neural Transm (Vienna). 2022;129:627–42. [DOI] [PubMed]
Behonick GS, Novak MJ, Nealley EW, Baskin SI. Toxicology update: the cardiotoxicity of the oxidative stress metabolites of catecholamines (aminochromes).J Appl Toxicol. 2001;21:S15–22. [DOI] [PubMed]
Cassagnes LE, Chhour M, Pério P, Sudor J, Gayon R, Ferry G, et al. Oxidative stress and neurodegeneration: The possible contribution of quinone reductase 2.Free Radic Biol Med. 2018;120:56–61. [DOI] [PubMed]
Misra HP, Fridovich I. The role of superoxide anion in the autoxidation of epinephrine and a simple assay for superoxide dismutase.J Biol Chem. 1972;247:3170–5. [PubMed]
Campos-Shimada LB, Hideo Gilglioni E, Fernandes Garcia R, Rizato Martins-Maciel E, Luiza Ishii-Iwamoto E, Luzia Salgueiro-Pagadigorria C. Superoxide dismutase: a review and a modified protocol for activities measurements in rat livers.Arch Physiol Biochem. 2020;126:292–9. [DOI] [PubMed]
Smythies J. The adrenochrome hypothesis of schizophrenia revisited.Neurotox Res. 2002;4:147–50. [DOI] [PubMed]
Miller CL. On the mechanism of action of antipsychotic drugs: a chemical reaction not receptor blockade.Curr Drug Discov Technol. 2013;10:195–208. [DOI] [PubMed]
Naoi M, Maruyama W. N-Methyl-(R) salsolinol and Enzymes Involved in Enantioselective Biosynthesis, Bioactivation, and Toxicity in Parkinson’s Disease. In: Kostrzewa RM, editor. Handbook of Neurotoxicity. Cham: Springer; 2023. pp. 1571–92.
Naoi M, Maruyama W, Dostert P, Hashizume Y. N-methyl-(R)salsolinol as a dopaminergic neurotoxin: from an animal model to an early marker of Parkinson's disease.J Neural Transm Suppl. 1997;50:89–105. [DOI] [PubMed]
Aubry S, Pellet‐Rostaing S, Lemaire M, Faure R. Racemic and diastereoselective synthesis of aryl and heteroaryl tetrahydroisoquinolines via the pictet‐spengler reaction.J Heterocycl Chem. 2006;43:139–48. [DOI]
Bassareo V, Maccioni R, Migheli R, Peana AT, Caboni P, Acquas E. Alcohol as Prodrug of Salsolinol. In: Patel VB, Preedy VR, editors. Handbook of Substance Misuse and Addictions. Cham: Springer; 2022. pp. 1–24.
Trimmer EE. Methylenetetrahydrofolate reductase: biochemical characterization and medical significance.Curr Pharm Des. 2013;19:2574–93. [DOI] [PubMed]
Wu H, Yuan B, Liu YM. Chiral capillary electrophoresis-mass spectrometry of tetrahydroisoquinoline-derived neurotoxins: observation of complex stereoisomerism.J Chromatogr A. 2011;1218:3118–23. [DOI] [PubMed] [PMC]
Maruyama W, Abe T, Tohgi H, Dostert P, Naoi M. A dopaminergic neurotoxin, (R)-N-methylsalsolinol, increases in Parkinsonian cerebrospinal fluid.Ann Neurol. 1996;40:119–22. [DOI] [PubMed]
Moser A, Scholz J, Nobbe F, Vieregge P, Böhme V, Bamberg H. Presence of N-methyl-norsalsolinol in the CSF: correlations with dopamine metabolites of patients with Parkinson’s disease.J Neurol Sci. 1995;131:183–9. [DOI] [PubMed]
Pablo BC, Meza MR, Marschitz MH, Torres GZ. Enantiomeric specificity of salsolinol on the µ-opioid receptor: A molecular modelling study.Argent J Behav Sci (RACC). 2017;9:5–6.
Sandler M, Carter SB, Hunter KR, Stern GM. Tetrahydroisoquinoline alkaloids: in vivo metabolites of L-dopa in man.Nature. 1973;241:439–43. [DOI] [PubMed]
Antkiewicz-Michaluk L, Krygowska-Wajs A, Szczudlik A, Romańska I, Vetulani J. Increase in salsolinol level in the cerebrospinal fluid of parkinsonian patients is related to dementia: advantage of a new high-performance liquid chromatography methodology.Biol Psychiatry. 1997;42:514–8. [DOI] [PubMed]
Martinez-Alvarado P, Dagnino-Subiabre A, Paris I, Metodiewa D, Welch CJ, Olea-Azar C, et al. Possible role of salsolinol quinone methide in the decrease of RCSN-3 cell survival.Biochem Biophys Res Commun. 2001;283:1069–76. [DOI] [PubMed]
Kobayashi H, Fukuhara K, Tada-Oikawa S, Yada Y, Hiraku Y, Murata M, et al. The mechanisms of oxidative DNA damage and apoptosis induced by norsalsolinol, an endogenous tetrahydroisoquinoline derivative associated with Parkinson’s disease.J Neurochem. 2009;108:397–407. [DOI] [PubMed]
do Carmo-Gonçalves P, Coelho-Cerqueira E, Cortines JR, de Souza TLF, Romão L, Follmer C. In vitro neurotoxicity of salsolinol is attenuated by the presynaptic protein α-synuclein.Biochim Biophys Acta Gen Subj. 2018;1862:2835–45. [DOI] [PubMed]
Miller JW, Selhub J, Nadeau MR, Thomas CA, Feldman RG, Wolf PA. Effect of L-dopa on plasma homocysteine in PD patients: relationship to B-vitamin status.Neurology. 2003;60:1125–9. [DOI] [PubMed]
Zoccolella S, dell’Aquila C, Specchio LM, Logroscino G, Lamberti P. Elevated homocysteine levels in Parkinson’s Disease: is there anything besides L-dopa treatment?Curr Med Chem. 2010;17:213–21. [DOI] [PubMed]
Kurnik M, Gil K, Gajda M, Thor P, Bugajski A. Neuropathic alterations of the myenteric plexus neurons following subacute intraperitoneal administration of salsolinol.Folia Histochem Cytobiol. 2015;53:49–61. [DOI] [PubMed]
Maruyama W, Naoi M, Kasamatsu T, Hashizume Y, Takahashi T, Kohda K, et al. An endogenous dopaminergic neurotoxin, N-methyl-(R)-salsolinol, induces DNA damage in human dopaminergic neuroblastoma SH-SY5Y cells.J Neurochem. 1997;69:322–9. [DOI] [PubMed]
Naoi M, Maruyama W, Akao Y, Zhang J, Parvez H. Apoptosis induced by an endogenous neurotoxin, N-methyl(R)salsolinol, in dopamine neurons.Toxicology. 2000;153:123–41. [DOI] [PubMed]
Fernandez W, Stern G, Lees AJ. Hallucinations and parkinsonian motor fluctuations.Behav Neurol. 1992;5:83–6. [DOI] [PubMed]
Moser A, Siebecker F, Vieregge P, Jaskowski P, Kömpf D. Salsolinol, catecholamine metabolites, and visual hallucinations in L-dopa treated patients with Parkinson’s disease.J Neural Transm (Vienna). 1996;103:421–32. [DOI] [PubMed]
Moser A, Thümen A, Qadri F. Modulation of striatal serotonin and opioid receptor mRNA expression following systemic N-methyl-norsalsolinol administration.J Neurol Sci. 2003;216:109–12. [DOI] [PubMed]
Yi H, Akao Y, Maruyama W, Chen K, Shih J, Naoi M. Type A monoamine oxidase is the target of an endogenous dopaminergic neurotoxin, N-methyl(R)salsolinol, leading to apoptosis in SH-SY5Y cells.J Neurochem. 2006;96:541–9. [DOI] [PubMed]
Cartus AT, Lachenmeier DW, Guth S, Roth A, Baum M, Diel P, et al. Acetaldehyde as a Food Flavoring Substance: Aspects of Risk Assessment.Mol Nutr Food Res. 2023;67:e2200661. [DOI] [PubMed]
Frisoni GB, Di Monda V. Disulfiram neuropathy: a review (1971-1988) and report of a case.Alcohol Alcohol. 1989;24:429–37. [PubMed]
Maring JA, Deitrich RA, Little R. Partial purification and properties of human brain aldehyde dehydrogenases.J Neurochem. 1985;45:1903–10. [DOI] [PubMed]
Pettersson H, Tottmar O. Inhibition of aldehyde dehydrogenases in rat brain and liver by disulfiram and coprine.J Neurochem. 1982;39:628–34. [DOI] [PubMed]
Tabakoff B, Anderson RA, Ritzmann RF. Brain acetaldehyde after ethanol administration.Biochem Pharmacol. 1976;25:1305–9. [DOI] [PubMed]
Xie G, Krnjević K, Ye JH. Salsolinol modulation of dopamine neurons.Front Behav Neurosci. 2013;7:52. [DOI] [PubMed] [PMC]
Melis M, Carboni E, Caboni P, Acquas E. Key role of salsolinol in ethanol actions on dopamine neuronal activity of the posterior ventral tegmental area.Addict Biol. 2015;20:182–93. [DOI] [PubMed]
Karamanakos PN, Pappas P, Stephanou P, Marselos M. Differentiation of disulfiram effects on central catecholamines and hepatic ethanol metabolism.Pharmacol Toxicol. 2001;88:106–10. [PubMed]
de Sousa A, de Sousa A. An open randomized study comparing disulfiram and acamprosate in the treatment of alcohol dependence.Alcohol Alcohol. 2005;40:545–8. [DOI] [PubMed]
Filosto M, Tentorio M, Broglio L, Buzio S, Lazzarini C, Pasolini MP, et al. Disulfiram neuropathy: two cases of distal axonopathy.Clin Toxicol (Phila). 2008;46:314–6. [DOI] [PubMed]
Tran AT, Rison RA, Beydoun SR. Disulfiram neuropathy: two case reports.J Med Case Rep. 2016;10:72. [DOI] [PubMed] [PMC]
Lanz J, Biniaz-Harris N, Kuvaldina M, Jain S, Lewis K, Fallon BA. Disulfiram: Mechanisms, Applications, and Challenges.Antibiotics (Basel). 2023;12:524. [DOI] [PubMed] [PMC]
Kulacaoglu F, Dıspinar NI. P.0220 Psychotic mania induced by disulfiram: a case report and review.Eur Neuropsychopharmacol. 2021;53:S159. [DOI]
Collins AC, Cashaw JL, Davis VE. Dopamine-derived tetrahydroisoquinoline alkaloids--inhibitors of neuroamine metabolism.Biochem Pharmacol. 1973;22:2337–48. [DOI] [PubMed]
Giovine A, Renis M, Bertolino A. In vivo and in vitro studies on the effect of tetrahydropapaveroline and salsolinol on COMT and MAO activity in rat brain.Pharmacology. 1976;14:86–94. [DOI] [PubMed]
Yamanaka Y. Effect of salsolinol on rat brain and liver monoamine oxidase.Jpn J Pharmacol. 1971;21:833–6. [DOI] [PubMed]
Nakahara D, Maruyama W, Hashiguti H, Naoi M. Characterization of the in vivo action of (R)-salsolinol, an endogenous metabolite of alcohol, on serotonin and dopamine metabolism: a microdialysis study.Brain Res. 1994;644:226–32. [DOI] [PubMed]
Scholz J, Bamberg H, Moser A. N-methyl-norsalsolinol, an endogenous neurotoxin, inhibits tyrosine hydroxylase activity in the rat brain nucleus accumbens in vitro.Neurochem Int. 1997;31:845–9. [DOI] [PubMed]
Sobczyńska-Malefora A, Delvin E, McCaddon A, Ahmadi KR, Harrington DJ. Vitamin B12 status in health and disease: a critical review. Diagnosis of deficiency and insufficiency - clinical and laboratory pitfalls.Crit Rev Clin Lab Sci. 2021;58:399–429. [DOI] [PubMed]
Carney MW, Sheffield BF. Serum folic acid and B12 in 272 psychiatric in-patients.Psychol Med. 1978;8:139–44. [DOI] [PubMed]
Metzler MS, Miller MD, William H, Edwards MD, Stephen C. Psychiatric Manifestation of Vitamin B-12 Deficiency: An Update.Jpn J Pharmacol. 1991;9:8. [DOI]
Payinda G, Hansen T. Vitamin B12 Deficiency Manifested as Psychosis Without Anemia.Am J Psychiatry. 2000;157:660–1. [DOI] [PubMed]
Goebels N, Soyka M. Dementia associated with vitamin B12 deficiency: presentation of two cases and review of the literature.J Neuropsychiatry Clin Neurosci. 2000;12:389–94. [DOI] [PubMed]
Hanna S, Lachover L, Rajarethinam RP. Vitamin b12 deficiency and depression in the elderly: review and case report.Prim Care Companion J Clin Psychiatry. 2009;11:269–70. [DOI] [PubMed] [PMC]
Silva B, Velosa A, Barahona-Corrêa JB. Reversible dementia, psychotic symptoms and epilepsy in a patient with vitamin B12 deficiency.BMJ Case Rep. 2019;12:e229044. [DOI] [PubMed] [PMC]
Calle-Gonzalez A, Batet-Sanchez D, Mata AH, Gómez AS, Zulueta RP. Psychosis as a symptom of Vitamin B12 deficiency. Report of one case.Eur Psychiatry. 2021;64:S421–2. [DOI] [PMC]
Carvalho AR, Vacas S, Klut C. Vitamin B12 deficiency induced psychosis–a case report.Eur Psychiatry. 2017;41:S805. [DOI]
Dogan M, Ariyuca S, Peker E, Akbayram S, Dogan ŞZ, Ozdemir O, et al. Psychotic disorder, hypertension and seizures associated with vitamin B12 deficiency: a case report.Hum Exp Toxicol. 2012;31:410–3. [DOI] [PubMed]
Ransing RS, Patil S, Pevekar K, Mishra K, Patil B. Unrecognized Prevalence of Macrocytosis among the Patients with First Episode of Psychosis and Depression.Indian J Psychol Med. 2018;40:68–73. [DOI] [PubMed] [PMC]
Kapici Y, Almis BH. Comparison of first-episode psychosis and first-episode mania patients with healthy controls regarding serum vitamin B12 and folate levels.J Psychiatry Neurol Sci. 2022;35:147–54. [DOI]
Sahoo MK, Sahu A, Biswas H, Agarwal SK. Vitamin B12 Deficiency Presenting as Acute Psychosis.J Evolution Med Dent Sci. 2020;9:465–7. [DOI]
Lindenbaum J, Healton EB, Savage DG, Brust JC, Garrett TJ, Podell ER, et al. Neuropsychiatric disorders caused by cobalamin deficiency in the absence of anemia or macrocytosis.N Engl J Med. 1988;318:1720–8. [DOI] [PubMed]
Zheng X, Qiu R, Zhang W, Chen X, Wang M. Vitamin B12 Deficiency Presenting as Psychotic Symptoms in a Psychiatry Department: A Case Report.Cureus. 2023;15:e50492. [DOI] [PubMed] [PMC]
Teodoro T. Late-Onset Psychotic Symptoms Associated With Vitamin B12 Deficiency in a Patient With Celiac Disease.Prim Care Companion CNS Disord. 2023;25:22cr03405. [DOI] [PubMed]
Yazici AB, Akcay Ciner O, Yazici E, Cilli AS, Dogan B, Erol A. Comparison of vitamin B12, vitamin D and folic acid blood levels in patients with schizophrenia, drug addiction and controls.J Clin Neurosci. 2019;65:11–6. [DOI] [PubMed]
Antoniades C, Shirodaria C, Warrick N, Cai S, de Bono J, Lee J, et al. 5-methyltetrahydrofolate rapidly improves endothelial function and decreases superoxide production in human vessels: effects on vascular tetrahydrobiopterin availability and endothelial nitric oxide synthase coupling.Circulation. 2006;114:1193–201. [DOI] [PubMed]
Hyndman ME, Verma S, Rosenfeld RJ, Anderson TJ, Parsons HG. Interaction of 5-methyltetrahydrofolate and tetrahydrobiopterin on endothelial function.Am J Physiol Heart Circ Physiol. 2002;282:H2167–72. [DOI] [PubMed]
Scott JM, Weir DG. The methyl folate trap. A physiological response in man to prevent methyl group deficiency in kwashiorkor (methionine deficiency) and an explanation for folic-acid induced exacerbation of subacute combined degeneration in pernicious anaemia.Lancet. 1981;2:337–40. [DOI] [PubMed]
van der Westhuyzen J, Fernandes-Costa F, Metz J. Cobalamin inactivation by nitrous oxide produces severe neurological impairment in fruit bats : protection by methionine and aggravation by folates.Life Sci. 1982;31:2001–10. [DOI] [PubMed]
van der Westhuyzen J. B12 deficiency-does it exist?South Afr Fam Pract. 1981;2:19–23.
Reynolds EH. Benefits and risks of folic acid to the nervous system.J Neurol Neurosurg Psychiatry. 2002;72:567–71. [DOI] [PubMed] [PMC]
Wong SL, Harrison R, Mattman A, Hsiung GY. Nitrous Oxide (N2O)-Induced Acute Psychosis.Can J Neurol Sci. 2014;41:672–4. [DOI] [PubMed]
Brennan MJ, van der Westhuyzen J, Kramer S, Metz J. Neurotoxicity of folates: implications for vitamin B12 deficiency and Huntington’s chorea.Med Hypotheses. 1981;7:919–29. [DOI] [PubMed]
Sethi NK, Mullin P, Torgovnick J, Capasso G. Nitrous oxide “whippit” abuse presenting with cobalamin responsive psychosis.J Med Toxicol. 2006;2:71–4. [DOI] [PubMed] [PMC]
Farmer J, Romain K, Ibrahim M, Kumar M, Moore WY. The neuropsychiatric effects of nitrous oxide and low vitamin B12.BJPsych Adv. 2022;28:216–25. [DOI]
Sood R, Parent T. Peripheral polyneuropathy and acute psychosis from chronic nitrous oxide poisoning: A case report with literature review.Medicine (Baltimore). 2022;101:e28611. [DOI] [PubMed] [PMC]
Shay H, Frumento RJ, Bastien A. General anesthesia and methylenetetrahydrofolate reductase deficiency.J Anesth. 2007;21:493–6. [DOI] [PubMed]
van der Westhuyzen J, Metz J. Tissue S-adenosylmethionine levels in fruit bats (Rousettus aegyptiacus) with nitrous oxide-induced neuropathy.Br J Nutr. 1983;50:325–30. [DOI] [PubMed]
Nijhout HF, Best J, Reed MC. Escape from homeostasis.Math Biosci. 2014;257:104–10. [DOI] [PubMed]
Smith R, Oliver RA. Sudden onset of psychosis in association with vitamin-B12 deficiency.Br Med J. 1967;3:34. [DOI] [PubMed] [PMC]
Pollin W, Cardon PV Jr, Kety SS. Effects of amino acid feedings in schizophrenic patients treated with iproniazid.Science. 1961;133:104–5. [DOI] [PubMed]
Brune GG, Himwich HE. Effects of methionine loading on the behavior of schizophrenic patients.J Nerv Ment Dis. 1962;134:447–50. [DOI] [PubMed]
Haydu GG, Dhrymiotis A, Korenyi C, Goldschmidt L. Effects of methionine and hydroxychloroquine in schizophrenia.Am J Psychiatry. 1965;122:560–4. [DOI] [PubMed]
Antun FT, Burnett GB, Cooper AJ, Daly RJ, Smythies JR, Zealley AK. The effects of L-methionine (without MAOI) in schizophrenia.J Psychiatr Res. 1971;8:63–71. [DOI] [PubMed]
Stahelin HB, Winchell HS. Induction of psychotic behavior in folic acid deficient patients by ingestion of L-methionine. In: Lawrence JH, editor. Semiannual Report Biology and Medicine. Berkeley (CA): Lawrence Berkeley National Laboratory; 1969. p. 79.
Fekkes D, Pepplinkhuizen L, Verheij R, Bruinvels J. Abnormal plasma levels of serine, methionine, and taurine in transient acute polymorphic psychosis.Psychiatry Res. 1994;51:11–8. [DOI] [PubMed]
van der Heijden FM, Fekkes D, Tuinier S, Sijben AE, Kahn RS, Verhoeven WM. Amino acids in schizophrenia: evidence for lower tryptophan availability during treatment with atypical antipsychotics?J Neural Transm (Vienna). 2005;112:577–85. [DOI] [PubMed]
Kriisa K, Haring L, Vasar E, Koido K, Janno S, Vasar V, et al. Antipsychotic Treatment Reduces Indices of Oxidative Stress in First-Episode Psychosis Patients.Oxid Med Cell Longev. 2016;2016:9616593. [DOI] [PubMed] [PMC]
Feisthammel J, Schoppmeyer K, Mössner J, Schulze M, Caca K, Wiedmann M. Irinotecan with 5-FU/FA in advanced biliary tract adenocarcinomas: a multicenter phase II trial.Am J Clin Oncol. 2007;30:319–24. [DOI] [PubMed]
Fora A, Alabsi E, Fakih M. A case of 5-fluorouracil-induced acute psychosis.Clin Colorectal Cancer. 2009;8:166–8. [DOI] [PubMed]
Saif MW, Lichtman SM. Chemotherapy options and outcomes in older adult patients with colorectal cancer.Crit Rev Oncol Hematol. 2009;72:155–69. [DOI] [PubMed]
Brauner G, Cove A, Li J, Bronson B, Chacko M. Newly diagnosed mania in a patient with stage IV pancreatic adenocarcinoma: A case report.Psychiatry Res Case Rep. 2022;1:100071. [DOI]
Lee CL, Holter S, Borgida A, Dodd A, Ramotar S, Grant R, et al. Germline BRCA2 variants in advanced pancreatic acinar cell carcinoma: A case report and review of literature.World J Gastroenterol. 2022;28:6421–32. [DOI] [PubMed] [PMC]
Mukherji S, Shoaib H, Jimenez X. Brief case report: A case of FOLFIRI-Induced psychosis.Psychooncology. 2023;32:1625–7. [DOI] [PubMed]
Elboga G, Aksoy PG, Kus T, Karayagmurlu E, Aktas G, Sahin S, et al. 5-fluorouracil-induced manic episode in patients with colon cancer: A case report and literature review.Ann Med Res. 2019;26:1123–5. [DOI]
Shakya S, Shrestha S, Pandey SR, Adhikari B, Joshi D, Shrestha S, et al. Case Report: Rare presentation of pancreatic ductal adenocarcinoma with severe depressive disorder with catatonia.F1000Research. 2022;11:315. [DOI]
De Mattia E, Toffoli G. C677T and A1298C MTHFR polymorphisms, a challenge for antifolate and fluoropyrimidine-based therapy personalisation.Eur J Cancer. 2009;45:1333–51. [DOI] [PubMed]
Pacchiarotti I, Mazzarini L, Pellegrini P, Venturelli V, Sani G, Sánchez-Moreno J, et al. A case of manic episode during treatment with 5-fluorouracil, epirubicin and cyclophosphamide for breast cancer.Gen Hosp Psychiatry. 2007;29:461–3. [DOI] [PubMed]
Ha JH, Hwang DY, Yu J, Park DH, Ryu SH. Onset of Manic Episode during Chemotherapy with 5-Fluorouracil.Psychiatry Investig. 2011;8:71–3. [DOI] [PubMed] [PMC]
Yasui-Furukori N, Hashimoto K, Kubo K, Tomita T. Interaction between paliperidone extended release and TS-1®, an oral anticancer drug containing a 5-fluorouracil derivative, in a schizophrenic patient.Neuropsychiatr Dis Treat. 2013;9:317–20. [DOI] [PubMed] [PMC]
Machover D, Almohamad W, Castagné V, Desterke C, Gomez L, Gaston-Mathé Y, et al. Pharmacologic modulation of 5-fluorouracil by folinic acid and high-dose pyridoxine for treatment of patients with digestive tract carcinomas.Sci Rep. 2021;11:12668. [DOI] [PubMed] [PMC]
Hildebrandt B, Dräger J, Kerner T, Deja M, Löffel J, Stroszczynski C, et al. Whole-body hyperthermia in the scope of von Ardenne’s systemic cancer multistep therapy (sCMT) combined with chemotherapy in patients with metastatic colorectal cancer: a phase I/II study.Int J Hyperthermia. 2004;20:317–33. [DOI] [PubMed]
Bertino JR. Nutrients, vitamins and minerals as therapy.Cancer. 1979;43:2137–42. [DOI] [PubMed]
Rustum YM. Toxicity and antitumor activity of 5-fluorouracil in combination with leucovorin. Role of dose schedule and route of administration of leucovorin.Cancer. 1989;63:1013–7. [DOI] [PubMed]
Wei J, Hemmings GP. Allelic association of the MTHFR gene with schizophrenia.Mol Psychiatry. 1999;4:115–6. [DOI] [PubMed]
Kang SS, Wong PW, Bock HG, Horwitz A, Grix A. Intermediate hyperhomocysteinemia resulting from compound heterozygosity of methylenetetrahydrofolate reductase mutations.Am J Hum Genet. 1991;48:546–51. [PubMed] [PMC]
Goyette P, Christensen B, Rosenblatt DS, Rozen R. Severe and mild mutations in cis for the methylenetetrahydrofolate reductase (MTHFR) gene, and description of five novel mutations in MTHFR.Am J Hum Genet. 1996;59:1268–75. [PubMed] [PMC]
Rummel T, Suormala T, Häberle J, Koch HG, Berning C, Perrett D, et al. Intermediate hyperhomocysteinaemia and compound heterozygosity for the common variant c.677C>T and a MTHFR gene mutation.J Inherit Metab Dis. 2007;30:401. [DOI] [PubMed]
Forges T, Chery C, Audonnet S, Feillet F, Gueant JL. Life-threatening methylenetetrahydrofolate reductase (MTHFR) deficiency with extremely early onset: characterization of two novel mutations in compound heterozygous patients.Mol Genet Metab. 2010;100:143–8. [DOI] [PubMed]
Đurović J, Stojković O, Todorović J, Savić K, Stamenković G. Should MTHFR 1298 A>C be tested together with MTHFR 677 C>T polymorphism in women with reproductive challenges?Genetika. 2017;49:377–86. [DOI]
Rommer PS, Zschocke J, Fowler B, Födinger M, Konstantopoulou V, Möslinger D, et al. Manifestations of neurological symptoms and thromboembolism in adults with MTHFR-deficiency.J Neurol Sci. 2017;383:123–7. [DOI] [PubMed]
Lu Y, Zhao S, He X, Yang H, Wang X, Miao C, et al. Novel compound heterozygous mutations of MTHFR Gene in a Chinese family with homocystinuria due to MTHFR deficiency.BMC Med Genomics. 2022;15:271. [DOI] [PubMed] [PMC]
Rosenblatt JE, Fallon A, Finegold SM. Comparison of methods for isolation of anaerobic bacteria from clinical specimens.Appl Microbiol. 1973;25:77–85. [DOI] [PubMed] [PMC]
Suormala T, Gamse G, Fowler B. 5,10-Methylenetetrahydrofolate reductase (MTHFR) assay in the forward direction: residual activity in MTHFR deficiency.Clin Chem. 2002;48:835–43. [PubMed]
Huemer M, Diodato D, Schwahn B, Schiff M, Bandeira A, Benoist JF, et al. Guidelines for diagnosis and management of the cobalamin-related remethylation disorders cblC, cblD, cblE, cblF, cblG, cblJ and MTHFR deficiency.J Inherit Metab Dis. 2017;40:21–48. [DOI] [PubMed] [PMC]
Donaldson KO, Keresztesy JC. Naturally occurring forms of folic acid. III. Characterization and properties of 5-methyldihydrofolate, an oxidation product of 5-methyltetrahydrofolate.J Biol Chem. 1962;237:3815–9. [PubMed]
Crabtree MJ, Channon KM. Synthesis and recycling of tetrahydrobiopterin in endothelial function and vascular disease.Nitric Oxide. 2011;25:81–8. [DOI] [PubMed] [PMC]
Moens AL, Kass DA. Tetrahydrobiopterin and cardiovascular disease.Arterioscler Thromb Vasc Biol. 2006;26:2439–44. [DOI] [PubMed]
Fanet H, Capuron L, Castanon N, Calon F, Vancassel S. Tetrahydrobioterin (BH4) Pathway: From Metabolism to Neuropsychiatry.Curr Neuropharmacol. 2021;19:591–609. [DOI] [PubMed] [PMC]
Weile J, Kishore N, Sun S, Maaieh R, Verby M, Li R, et al. Shifting landscapes of human MTHFR missense-variant effects.Am J Hum Genet. 2021;108:1283–300. [DOI] [PubMed] [PMC]
Pasquier F, Lebert F, Petit H, Zittoun J, Marquet J. Methylenetetrahydrofolate reductase deficiency revealed by a neuropathy in a psychotic adult.J Neurol Neurosurg Psychiatry. 1994;57:765–6. [DOI] [PubMed] [PMC]
Iida S, Nakamura M, Asayama S, Kunieda T, Kaneko S, Osaka H, et al. Rapidly progressive psychotic symptoms triggered by infection in a patient with methylenetetrahydrofolate reductase deficiency: a case report.BMC Neurol. 2017;17:47. [DOI] [PubMed] [PMC]
Birnbaum T, Blom HJ, Prokisch H, Hartig M, Klopstock T. Methylenetetrahydrofolate reductase deficiency (homocystinuria type II) as a rare cause of rapidly progressive tetraspasticity and psychosis in a previously healthy adult.J Neurol. 2008;255:1845–6. [DOI] [PubMed]
Gales A, Masingue M, Millecamps S, Giraudier S, Grosliere L, Adam C, et al. Adolescence/adult onset MTHFR deficiency may manifest as isolated and treatable distinct neuro-psychiatric syndromes.Orphanet J Rare Dis. 2018;13:29. [DOI] [PubMed] [PMC]
Joober R, Benkelfat C, Lal S, Bloom D, Labelle A, Lalonde P, et al. Association between the methylenetetrahydrofolate reductase 677C-->T missense mutation and schizophrenia.Mol Psychiatry. 2000;5:323–6. [DOI] [PubMed]
Muntjewerff JW, Kahn RS, Blom HJ, den Heijer M. Homocysteine, methylenetetrahydrofolate reductase and risk of schizophrenia: a meta-analysis.Mol Psychiatry. 2006;11:143–9. [DOI] [PubMed]
Lajin B, Alhaj Sakur A, Michati R, Alachkar A. Association between MTHFR C677T and A1298C, and MTRR A66G polymorphisms and susceptibility to schizophrenia in a Syrian study cohort.Asian J Psychiatr. 2012;5:144–9. [DOI] [PubMed]
Zhilyaeva TV, Sergeeva AV, Blagonravova AS, Kasimova LN, Kuznetsov KV, Golovanova VI, et al. Association study of methylenetetrahydrofolate reductase genetic polymorphism 677C>T with schizophrenia in hospitalized patients in population of European Russia.Asian J Psychiatr. 2018;32:29–33. [DOI] [PubMed]
Zhang YX, Yang LP, Gai C, Cheng CC, Guo ZY, Sun HM, et al. Association between variants of MTHFR genes and psychiatric disorders: A meta-analysis.Front Psychiatry. 2022;13:976428. [DOI] [PubMed] [PMC]
Yu L, Li T, Robertson Z, Dean J, Gu NF, Feng GY, et al. No association between polymorphisms of methylenetetrahydrofolate reductase gene and schizophrenia in both Chinese and Scottish populations.Mol Psychiatry. 2004;9:1063–5. [DOI] [PubMed]
Philibert R, Gunter T, Hollenbeck N, Adams WJ, Bohle P, Packer H, et al. No association of the C677T methylenetetrahydrofolate reductase polymorphism with schizophrenia.Psychiatr Genet. 2006;16:221–3. [DOI] [PubMed]
García-Miss Mdel R, Pérez-Mutul J, López-Canul B, Solís-Rodríguez F, Puga-Machado L, Oxté-Cabrera A, et al. Folate, homocysteine, interleukin-6, and tumor necrosis factor alfa levels, but not the methylenetetrahydrofolate reductase C677T polymorphism, are risk factors for schizophrenia.J Psychiatr Res. 2010;44:441–6. [DOI] [PubMed]
Gilbody S, Lewis S, Lightfoot T. Methylenetetrahydrofolate reductase (MTHFR) genetic polymorphisms and psychiatric disorders: a HuGE review.Am J Epidemiol. 2007;165:1–13. [DOI] [PubMed]
Wan L, Li Y, Zhang Z, Sun Z, He Y, Li R. Methylenetetrahydrofolate reductase and psychiatric diseases.Transl Psychiatry. 2018;8:242. [DOI] [PubMed] [PMC]
Rai V. Genetic polymorphisms of methylenetetrahydrofolate reductase (MTHFR) gene and susceptibility to depression in Asian population: a systematic meta-analysis.Cell Mol Biol (Noisy-le-grand). 2014;60:29–36. [PubMed]
Kevere L, Purvina S, Bauze D, Zeibarts M, Andrezina R, Piekuse L, et al. Homocysteine and MTHFR C677T polymorphism in children and adolescents with psychotic and mood disorders.Nord J Psychiatry. 2014;68:129–36. [DOI] [PubMed]
Castro R, Rivera I, Ravasco P, Jakobs C, Blom HJ, Camilo ME, et al. 5,10-Methylenetetrahydrofolate reductase 677C-->T and 1298A-->C mutations are genetic determinants of elevated homocysteine.QJM. 2003;96:297–303. [DOI] [PubMed]
Ulvik A, Ueland PM, Fredriksen A, Meyer K, Vollset SE, Hoff G, et al. Functional inference of the methylenetetrahydrofolate reductase 677C > T and 1298A > C polymorphisms from a large-scale epidemiological study.Hum Genet. 2007;121:57–64. [DOI] [PubMed]
Frankham R, Ballou JD, Eldridge MD, Lacy RC, Ralls K, Dudash MR, et al. Predicting the probability of outbreeding depression.Conserv Biol. 2011;25:465–75. [DOI] [PubMed]
Song L, Shi JY, Duan SF, Han DY, Li K, Zhang RP, et al. Improved redox homeostasis owing to the up-regulation of one-carbon metabolism and related pathways is crucial for yeast heterosis at high temperature.Genome Res. 2021;31:622–34. [DOI] [PubMed] [PMC]
Firth J, Stubbs B, Sarris J, Rosenbaum S, Teasdale S, Berk M, et al. The effects of vitamin and mineral supplementation on symptoms of schizophrenia: a systematic review and meta-analysis.Psychol Med. 2017;47:1515–27. [DOI] [PubMed]
dos Reis FP, Duarte L, Cartaxo T, Santos V. Folic acid, vitamin B12, and psychotic symptoms among young psychiatric inpatients.Nascer e Crescer. 2021;30:85–91. [DOI]
Saidinejad M, Ewald MB, Shannon MW. Transient psychosis in an immune-competent patient after oral trimethoprim-sulfamethoxazole administration.Pediatrics. 2005;115:e739–41. [DOI] [PubMed]
Frajerman A, Urban M, Rivollier F, Plaze M, Chaumette B, Krebs MO, et al. Abnormalities in one-carbon metabolism in young patients with psychosis.Front Psychiatry. 2023;14:1128890. [DOI] [PubMed] [PMC]
Bemanian M, Vold JH, Chowdhury R, Aas CF, Gjestad R, Johansson KA, et al. Folate Status as a Nutritional Indicator among People with Substance Use Disorder; A Prospective Cohort Study in Norway.Int J Environ Res Public Health. 2022;19:5754. [DOI] [PubMed] [PMC]
Freeman JM, Finkelstein JD, Mudd SH. Folate-responsive homocystinuria and “schizophrenia”. A defect in methylation due to deficient 5,10-methylenetetrahydrofolate reductase activity.N Engl J Med. 1975;292:491–6. [DOI] [PubMed]
Michot JM, Sedel F, Giraudier S, Smiejan JM, Papo T. Psychosis, paraplegia and coma revealing methylenetetrahydrofolate reductase deficiency in a 56-year-old woman.J Neurol Neurosurg Psychiatry. 2008;79:963–4. [DOI] [PubMed]
Levine J, Stahl Z, Sela BA, Ruderman V, Shumaico O, Babushkin I, et al. Homocysteine-reducing strategies improve symptoms in chronic schizophrenic patients with hyperhomocysteinemia.Biol Psychiatry. 2006;60:265–9. [DOI] [PubMed]
Hill M, Shannahan K, Jasinski S, Macklin EA, Raeke L, Roffman JL, et al. Folate supplementation in schizophrenia: a possible role for MTHFR genotype.Schizophr Res. 2011;127:41–5. [DOI] [PubMed]
Roffman JL, Lamberti JS, Achtyes E, Macklin EA, Galendez GC, Raeke LH, et al. Randomized multicenter investigation of folate plus vitamin B12 supplementation in schizophrenia.JAMA Psychiatry. 2013;70:481–9. [DOI] [PubMed] [PMC]
Godfrey PS, Toone BK, Carney MW, Flynn TG, Bottiglieri T, Laundy M, et al. Enhancement of recovery from psychiatric illness by methylfolate.Lancet. 1990;336:392–5. [DOI] [PubMed]
Simamora RH, Loebis B, Husada MS, Effendy E. Folic Acid and Vitamin B12 Supplementation on Male Patients with Schizophrenia Predominant Negative Symptoms.Curr Nutr Food Sci. 2020;16:98–104. [DOI]
Niu K, Zhao X, Wei Y, Wang Y. Clinical efficacy and safety of folic acid and vitamin B12 for the adjuvant treatment of schizophrenia: a systematic review and meta-analysis.Invest Clin. 2023;64:424–36. [DOI]
Carney MW, Chary TK, Laundy M, Bottiglieri T, Chanarin I, Reynolds EH, et al. Red cell folate concentrations in psychiatric patients.J Affect Disord. 1990;19:207–13. [DOI] [PubMed]
Wilkinson AM, Anderson DN, Abou-Saleh MT, Wesson M, Blair JA, Farrar G, et al. 5-Methyltetrahydrofolate level in the serum of depressed subjects and its relationship to the outcome of ECT.J Affect Disord. 1994;32:163–8. [DOI] [PubMed]
Roberts E, Carter B, Young AH. Caveat emptor: Folate in unipolar depressive illness, a systematic review and meta-analysis.J Psychopharmacol. 2018;32:377–84. [DOI] [PubMed]
Zheng W, Li W, Qi H, Xiao L, Sim K, Ungvari GS, et al. Adjunctive folate for major mental disorders: A systematic review.J Affect Disord. 2020;267:123–30. [DOI] [PubMed]
Muntjewerff JW, Blom HJ. Aberrant folate status in schizophrenic patients: what is the evidence?Prog Neuropsychopharmacol Biol Psychiatry. 2005;29:1133–9. [DOI] [PubMed]
Martone G. Enhancement of recovery from mental illness with l-methylfolate supplementation.Perspect Psychiatr Care. 2018;54:331–4. [DOI] [PubMed]
Roffman JL, Petruzzi LJ, Tanner AS, Brown HE, Eryilmaz H, Ho NF, et al. Biochemical, physiological and clinical effects of l-methylfolate in schizophrenia: a randomized controlled trial.Mol Psychiatry. 2018;23:316–22. [DOI] [PubMed] [PMC]
Berk L, Bauer JL, Castle WB. Folic acid: a report of 12 patients treated with synthetic pteroylglutamic acid: with comments on the pertinent literature.S Afr Med J. 1948;22:604–11.
Baxter MG, Miller AA, Webster RA. Some studies on the convulsant action of folic acid.Br J Pharmacol. 1973;48:350P–1P. [PubMed] [PMC]
Semmler A, Moskau-Hartmann S, Stoffel-Wagner B, Elger C, Linnebank M. Homocysteine plasma levels in patients treated with antiepileptic drugs depend on folate and vitamin B12 serum levels, but not on genetic variants of homocysteine metabolism.Clin Chem Lab Med. 2013;51:665–9. [DOI] [PubMed]
Hunter R, Barnes J, Oakeley HF, Matthews DM. Toxicity of folic acid given in pharmacological doses to healthy volunteers.Lancet. 1970;1:61–3. [DOI] [PubMed]
Prakash R, Petrie WM. Psychiatric changes associated with an excess of folic acid.Am J Psychiatry. 1982;139:1192–3. [DOI] [PubMed]
Bobes J, Arango C, Garcia-Garcia M, Rejas J; CLAMORS Study Collaborative Group. Prevalence of negative symptoms in outpatients with schizophrenia spectrum disorders treated with antipsychotics in routine clinical practice: findings from the CLAMORS study.J Clin Psychiatry. 2010;71:280–6. [DOI] [PubMed]
Kirschner M, Aleman A, Kaiser S. Secondary negative symptoms - A review of mechanisms, assessment and treatment.Schizophr Res. 2017;186:29–38. [DOI] [PubMed]
Chaudhry IB, Husain MO, Khoso AB, Husain MI, Buch MH, Kiran T, et al. Correction: A randomised clinical trial of methotrexate points to possible efficacy and adaptive immune dysfunction in psychosis.Transl Psychiatry. 2021;11:446. [DOI] [PubMed] [PMC]
Sur S, Chauhan A. Methotrexate-induced pseudotumor cerebri and psychosis in a case of rheumatoid arthritis.J Neuropsychiatry Clin Neurosci. 2012;24:E18. [DOI] [PubMed]
Geddes JR, Gardiner A, Rendell J, Voysey M, Tunbridge E, Hinds C, et al.; CEQUEL Investigators and Collaborators. Comparative evaluation of quetiapine plus lamotrigine combination versus quetiapine monotherapy (and folic acid versus placebo) in bipolar depression (CEQUEL): a 2 × 2 factorial randomised trial.Lancet Psychiatry. 2016;3:31–9. [DOI] [PubMed]
Morris E, Hippman C, Albert A, Slomp C, Inglis A, Carrion P, et al. A prospective study to explore the relationship between MTHFR C677T genotype, physiological folate levels, and postpartum psychopathology in at-risk women.PLoS One. 2020;15:e0243936. [DOI] [PubMed] [PMC]
Glaser B, Ades AE, Lewis S, Emmet P, Lewis G, Smith GD, et al. Perinatal folate-related exposures and risk of psychotic symptoms in the ALSPAC birth cohort.Schizophr Res. 2010;120:177–83. [DOI] [PubMed] [PMC]
Hunter SK, Hoffman MC, D’Alessandro A, Freedman R. Developmental Windows for Effects of Choline and Folate on Excitatory and Inhibitory Neurotransmission During Human Gestation.Dev Psychobiol. 2024;66:e22453. [DOI] [PubMed]
Rainka M, Aladeen T, Westphal E, Meaney J, Gengo F, Greger J, et al. L-Methylfolate Calcium Supplementation in Adolescents and Children: A Retrospective Analysis.J Psychiatr Pract. 2019;25:258–67. [DOI] [PubMed]
Prades N, Varela E, Flamarique I, Deulofeu R, Baeza I. Water-soluble vitamin insufficiency, deficiency and supplementation in children and adolescents with a psychiatric disorder: a systematic review and meta-analysis.Nutr Neurosci. 2023;26:85–107. [DOI] [PubMed]
Murray RM, Bhavsar V, Tripoli G, Howes O. 30 Years on: How the Neurodevelopmental Hypothesis of Schizophrenia Morphed Into the Developmental Risk Factor Model of Psychosis.Schizophr Bull. 2017;43:1190–6. [DOI] [PubMed] [PMC]
D’Ambrosio E, Pergola G, Pardiñas AF, Dahoun T, Veronese M, Sportelli L, et al. A polygenic score indexing a DRD2-related co-expression network is associated with striatal dopamine function.Sci Rep. 2022;12:12610. [DOI] [PubMed] [PMC]
Graf WD, Unis AS, Yates CM, Sulzbacher S, Dinulos MB, Jack RM, et al. Catecholamines in patients with 22q11.2 deletion syndrome and the low-activity COMT polymorphism.Neurology. 2001;57:410–6. [DOI] [PubMed]
Carandang CG, Scholten MC. Metyrosine in psychosis associated with 22q11.2 deletion syndrome: case report.J Child Adolesc Psychopharmacol. 2007;17:115–20. [DOI] [PubMed]
Engebretsen MH, Kildahl AN, Hoy IH, Bakken TL. Metyrosine treatment in a woman with chromosome 22q11.2 deletion syndrome and psychosis: a case study.Int J Dev Disabil. 2017;65:116–21. [DOI] [PubMed] [PMC]
da Silva Alves F, Bakker G, Schmitz N, Abeling N, Hasler G, van der Meer J, et al. Dopaminergic modulation of the reward system in schizophrenia: a placebo-controlled dopamine depletion fMRI study.Eur Neuropsychopharmacol. 2013;23:1577–86. [DOI] [PubMed]
Wålinder J, Skott A, Carlsson A, Roos BE. Potentiation by metyrosine of thioridazine effects in chronic schizophrenics. A long-term trial using double-blind crossover technique.Arch Gen Psychiatry. 1976;33:501–5. [DOI] [PubMed]
Larsson M, Ohman R, Wallin L, Wålinder J, Carlsson A. Antipsychotic treatment with alpha-methyltyrosine in combination with thioridazine: prolactin response and interaction with dopaminergic precursor pools.J Neural Transm. 1984;60:115–32. [DOI] [PubMed]
Magelund G, Gerlach J, Casey DE. Neuroleptic-potentiating effect of alpha-methyl-p-tyrosine compared with haloperidol and placebo in a double-blind cross-over trial.Acta Psychiatr Scand. 1979;60:185–9. [DOI] [PubMed]
Abi-Dargham A, Rodenhiser J, Printz D, Zea-Ponce Y, Gil R, Kegeles LS, et al. Increased baseline occupancy of D2 receptors by dopamine in schizophrenia.Proc Natl Acad Sci U S A. 2000;97:8104–9. [DOI] [PubMed] [PMC]
Suker S, Mihov Y, Wolf A, Mueller SV, Hasler G. Behavioral Response to Catecholamine Depletion in Individuals With Schizophrenia and Healthy Volunteers.Schizophr Bull Open. 2023;4:sgad023. [DOI]
Voruganti L, Slomka P, Zabel P, Costa G, So A, Mattar A, et al. Subjective effects of AMPT-induced dopamine depletion in schizophrenia: correlation between dysphoric responses and striatal D2 binding ratios on SPECT imaging.Neuropsychopharmacology. 2001;25:642–50. [DOI] [PubMed]
Wójciak P, Rybakowski J. Clinical picture, pathogenesis and psychometric assessment of negative symptoms of schizophrenia.Psychiatr Pol. 2018;52:185–97. [DOI] [PubMed]
de Koning MB, Bloemen OJ, van Amelsvoort TA, Becker HE, Nieman DH, van der Gaag M, et al. Early intervention in patients at ultra high risk of psychosis: benefits and risks.Acta Psychiatr Scand. 2009;119:426–42. [DOI] [PubMed]
Imamura K, Takeshima T, Nakaso K, Nakashima K. Homocysteine is toxic for dopaminergic neurons in primary mesencephalic culture.Neuroreport. 2007;18:1319–22. [DOI] [PubMed]
Jacob P 3rd, Shulgin AT. Structure-activity relationships of the classic hallucinogens and their analogs.NIDA Res Monogr. 1994;146:74–91. [PubMed]
Snyder SH, Merril CR. A relationship between the hallucinogenic activity of drugs and their electronic configuration.Proc Natl Acad Sci U S A. 1965;54:258–66. [DOI] [PubMed] [PMC]
Karreman G, Isenberg I, Szent-Gyorgyi A. On the mechanism of action of chlorpromazine.Science. 1959;130:1191–2. [DOI] [PubMed]
Nichols DE. Structure-activity relationships of phenethylamine hallucinogens.J Pharm Sci. 1981;70:839–49. [DOI] [PubMed]
Fakioğlu M, Kalpaklı Y. Mechanism and behavior of caffeine sorption: affecting factors.RSC Adv. 2022;12:26504–13. [DOI] [PubMed] [PMC]
Wittenberg RE, Wolfman SL, De Biasi M, Dani JA. Nicotinic acetylcholine receptors and nicotine addiction: A brief introduction.Neuropharmacology. 2020;177:108256. [DOI] [PubMed] [PMC]
Vargas HM, Jenden DJ. Elevation of cerebrospinal fluid choline levels by nicotinamide involves the enzymatic formation of N1-methylnicotinamide in brain tissue.Life Sci. 1996;58:1995–2002. [DOI] [PubMed]
Mehta P, Miszta P, Filipek S. Molecular Modeling of Histamine Receptors-Recent Advances in Drug Discovery.Molecules. 2021;26:1778. [DOI] [PubMed] [PMC]
Wessler I, Roth E, Deutsch C, Brockerhoff P, Bittinger F, Kirkpatrick CJ, et al. Release of non-neuronal acetylcholine from the isolated human placenta is mediated by organic cation transporters.Br J Pharmacol. 2001;134:951–6. [DOI] [PubMed] [PMC]
Kier LB, Hall LH. An electrotopological-state index for atoms in molecules.Pharm Res. 1990;7:801–7. [DOI] [PubMed]
Ivanciuc O. Electrotopological State Indices. In: Mannhold R, editor. Molecular Drug Properties: Measurement and Prediction. Wiley; 2007. pp. 85–109.
Wipf P, Skoda EM, Mann A. Conformational Restriction and Steric Hindrance in Medicinal Chemistry.In: Wermuth CG, Aldous D, Raboisson P, Rognan D. The Practice of Medicinal Chemistry. Academic Press; 2015. pp. 279–99.
Montoro-García C, Bilbao N, Tsagri IM, Zaccaria F, Mayoral MJ, Fonseca Guerra C, et al. Impact of Conformational Effects on the Ring-Chain Equilibrium of Hydrogen-Bonded Dinucleosides.Chemistry. 2018;24:11983–91. [DOI] [PubMed]
von Helden G, Hsu MT, Gotts N, Bowers MT. Carbon cluster cations with up to 84 atoms: structures, formation mechanism, and reactivity.J Phys Chem. 1993;97:8182–92. [DOI]
Kovacic P, Somanathan R. Novel, unifying mechanism for mescaline in the central nervous system: electrochemistry, catechol redox metabolite, receptor, cell signaling and structure activity relationships.Oxid Med Cell Longev. 2009;2:181–90. [DOI] [PubMed] [PMC]
Abraham HD, Aldridge AM, Gogia P. The psychopharmacology of hallucinogens.Neuropsychopharmacology. 1996;14:285–98. [DOI] [PubMed]
Kang S, Green JP. Steric and electronic relationships among some hallucinogenic compounds.Proc Natl Acad Sci U S A. 1970;67:62–7. [DOI] [PubMed] [PMC]
Kovacic P, Pozos RS. Bioelectronome. Integrated approach to receptor chemistry, radicals, electrochemistry, cell signaling, and physiological effects based on electron transfer.J Recept Signal Transduct Res. 2007;27:261–94. [DOI] [PubMed]
Silva F, Heath RG, Rafferty T, Johnson R, Robinson W. Comparative effects of the administration of taraxein, d-LSD, mescaline, and psilocybin to human volunteers.Compr Psychiatry. 1960;1:370–6. [DOI]
Ley L, Holze F, Arikci D, Becker AM, Straumann I, Klaiber A, et al. Comparative acute effects of mescaline, lysergic acid diethylamide, and psilocybin in a randomized, double-blind, placebo-controlled cross-over study in healthy participants.Neuropsychopharmacology. 2023;48:1659–67. [DOI] [PubMed] [PMC]
Pálenícek T, Balíková M, Bubeníková-Valesová V, Horácek J. Mescaline effects on rat behavior and its time profile in serum and brain tissue after a single subcutaneous dose.Psychopharmacology (Berl). 2008;196:51–62. [DOI] [PubMed]
Slavin Jr JD. Uptake and distribution of LSD-25 in the brain of the guinea pig [dissertation]. New Haven (CT): Yale University; 1966.
Hoffman A. LSD: My Problem Child. MAPS: Open Books; 2005.
Mokler DJ, Rech RH. Behavioral effects of intracerebroventricular administration of LSD, DOM, mescaline or lisuride.Pharmacol Biochem Behav. 1984;21:281–7. [DOI] [PubMed]
Madrid-Gambin F, Fabregat-Safont D, Gomez-Gomez A, Olesti E, Mason NL, Ramaekers JG, et al. Present and future of metabolic and metabolomics studies focused on classical psychedelics in humans.Biomed Pharmacother. 2023;169:115775. [DOI] [PubMed]
Young SN, Ghadirian AM. Folic acid and psychopathology.Prog Neuropsychopharmacol Biol Psychiatry. 1989;13:841–63. [DOI] [PubMed]
Akiyama T, Kuki I, Kim K, Yamamoto N, Yamada Y, Igarashi K, et al. Folic acid inhibits 5-methyltetrahydrofolate transport across the blood-cerebrospinal fluid barrier: Clinical biochemical data from two cases.JIMD Rep. 2022;63:529–35. [DOI] [PubMed] [PMC]
Yamada K, Mendoza J, Koutmos M. 5-Formyltetrahydrofolate promotes conformational remodeling in a methylenetetrahydrofolate reductase active site and inhibits its activity.J Biol Chem. 2023;299:102855. [DOI] [PubMed] [PMC]
Obeid R, Herrmann W. Mechanisms of homocysteine neurotoxicity in neurodegenerative diseases with special reference to dementia.FEBS Lett. 2006;580:2994–3005. [DOI] [PubMed]
Grieve A, Butcher SP, Griffiths R. Synaptosomal plasma membrane transport of excitatory sulphur amino acid transmitter candidates: kinetic characterisation and analysis of carrier specificity.J Neurosci Res. 1992;32:60–8. [DOI] [PubMed]
Büdy B, O’Neill R, DiBello PM, Sengupta S, Jacobsen DW. Homocysteine transport by human aortic endothelial cells: identification and properties of import systems.Arch Biochem Biophys. 2006;446:119–30. [DOI] [PubMed] [PMC]
Fleischhacker WW, Levine RA, Lieberman JA, Pollack S, Johns CA, Richardson MA. Neopterin and biopterin CSF levels in tardive dyskinesia after clozapine treatment.Biol Psychiatry. 1993;34:741–5. [DOI] [PubMed]
Cronin SJF, Rao S, Tejada MA, Turnes BL, Licht-Mayer S, Omura T, et al. Phenotypic drug screen uncovers the metabolic GCH1/BH4 pathway as key regulator of EGFR/KRAS-mediated neuropathic pain and lung cancer.Sci Transl Med. 2022;14:eabj1531. [DOI] [PubMed] [PMC]
Parikh DD, Panse SN. Schizophrenia with Segawa Syndrome: A Therapeutic Challenge.Ann Indian Psychiatry. 2020;4:84–6. [DOI]
Laduron PM, Gommeren WR, Leysen JE. N-Methylation of biogenic amines—I: Characterization and properties of an N-methyltransferase in rat brain using 5-methyltetrahydrofolic acid as the methyl donor.Biochem Pharmacol. 1974;23:1599–608. [DOI] [PubMed]
Meller E, Rosengarten H, Friedhoff AJ, Stebbins RD, Silber R. 5-Methyltetrahydrofolic Acid Is Not a Methyl Donor for Biogenic Amines: Enzymatic Formation of Formaldehyde.Science. 1975;187:171–3. [DOI] [PubMed]
Ghafourian T, Cronin MT. Comparison of electrotopological-state indices versus atomic charge and superdelocalisability indices in a QSAR study of the receptor binding properties of halogenated estradiol derivatives.Mol Divers. 2004;8:343–55. [DOI] [PubMed]