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Current Topics in Medicinal Chemistry

Editor-in-Chief

ISSN (Print): 1568-0266
ISSN (Online): 1873-4294

Review Article

The Gold Standard Diagnosis of Schizophrenia is Counterproductive: Towards Quantitative Research and Diagnostic Algorithmic Rules (RADAR) and their Derived Qualitative Distinct Classes

Author(s): Michael Maes*

Volume 24, Issue 20, 2024

Published on: 19 April, 2024

Page: [1799 - 1815] Pages: 17

DOI: 10.2174/0115680266295129240415120646

open access plus

Abstract

Recently, we developed Research and Diagnostic Algorithm Rules (RADAR) to assess the clinical and pathway features of mood disorders.

The aims of this paper are to review a) the methodology for developing continuous RADAR scores that describe the clinical and pathway features of schizophrenia, and b) a new method to visualize the clinical status of patients and the pathways implicated in RADAR graphs.

We review how to interpret clinical RADAR scores, which serve as valuable tools for monitoring the staging of illness, lifetime suicidal behaviors, overall severity of illness, a general cognitive decline index, and a behavior-cognitive-psychosocial (BCPS) index that represents the “defect”; and b) pathway RADAR scores which reflect various protective (including the compensatory immune- inflammatory system) and adverse (including neuro-immune, neuro-oxidative, and neurotoxic biomarkers) outcome pathways. Using RADAR scores and machine learning, we created new, qualitatively different types of schizophrenia, such as major neurocognitive psychosis and simple psychosis. We also made RADAR graphs, which give us a quick way to compare the patient's clinical condition and pathways to those of healthy controls.

We generated a personalized fingerprint for each patient, encompassing various clinical and pathway features of the disorder represented through RADAR graphs. The latter is utilized in clinical practice to assess the clinical condition of patients and identify treatment-required pathways to mitigate the risk of recurrent episodes, worsening BCPS, and increasing staging. The quantitative clinical RADAR scores should be used in schizophrenia research as dependent variables and regressed on the pathway RADAR scores.

Keywords: Schizophrenia, Diagnosis, Precision psychiatry, Neuroimmune, Inflammation, Oxidative stress.

Graphical Abstract
[1]
Maes, M.; Anderson, G. False dogmas in schizophrenia research: toward the reification of pathway phenotypes and pathway classes. Front. Psychiatry, 2021, 12, 663985.
[http://dx.doi.org/10.3389/fpsyt.2021.663985] [PMID: 34220578]
[2]
American Psychiatric Association In: Diagnostic and Statistical Manual of Mental Disorders, 5th; American Psychiatric Publishing: Arlington, VA, 2013; pp. 5-25.
[3]
World Health Organization, 2nd; ICD-10 : international statistical classification of diseases and related health problems, 2004, 3, .
[4]
Maes, M.; Vojdani, A.; Sirivichayakul, S.; Barbosa, D.S.; Kanchanatawan, B. Inflammatory and oxidative pathways are new drug targets in multiple episode schizophrenia and leaky gut, klebsiella pneumoniae, and c1q immune complexes are additional drug targets in first episode schizophrenia. Mol. Neurobiol., 2021, 58(7), 3319-3334.
[http://dx.doi.org/10.1007/s12035-021-02343-8] [PMID: 33675500]
[5]
Stoyanov, D.; Maes, M.H.J. How to construct neuroscience-informed psychiatric classification? Towards nomothetic networks psychiatry. World J. Psychiatry, 2021, 11(1), 1-12.
[http://dx.doi.org/10.5498/wjp.v11.i1.1] [PMID: 33511042]
[6]
Maes, M. Major neurocognitive psychosis: a novel schizophrenia endophenotype class that is based on machine learning and resembles Kraepelin’s and Bleuler’s conceptions. Acta Neuropsychiatr., 2023, 35(3), 123-137.
[http://dx.doi.org/10.1017/neu.2022.32] [PMID: 36373497]
[7]
Al-Hakeim, H.K.; Mousa, R.F.; Al-Dujaili, A.H.; Maes, M. In schizophrenia, non-remitters and partial remitters to treatment with antipsychotics are qualitatively distinct classes with respect to neurocognitive deficits and neuro-immune biomarkers: results of soft independent modeling of class analogy. Metab. Brain Dis., 2021, 36(5), 939-955.
[http://dx.doi.org/10.1007/s11011-021-00685-9] [PMID: 33580860]
[8]
Kanchanatawan, B.; Thika, S.; Sirivichayakul, S.; Carvalho, A.F.; Geffard, M.; Maes, M. In schizophrenia, depression, anxiety, and physiosomatic symptoms are strongly related to psychotic symptoms and excitation, impairments in episodic memory, and increased production of neurotoxic tryptophan catabolites: a multivariate and machine learning study. Neurotox. Res., 2018, 33(3), 641-655.
[http://dx.doi.org/10.1007/s12640-018-9868-4] [PMID: 29380275]
[9]
Popper, K. On the Structure of Scientific Revolution; Chicago University Press: Chicago, IL, 1962.
[10]
Maes, M. Maes M. British Journal of Psychiatry: a journal of the status quo that opposes emerging precision medicine-based theories that question false Anglo-Saxon dogmas (The negative symptoms of schizophrenia: lessons from a precision nomothetic psychiatry approach). Available from: https://www.researchgate.net/publication/360943707_British_Journal_of_Psychiatry_a_journal_of_the_status_quo_that_opposes_emerging_precision_medicine-based_theories_that_question_false_Anglo-Saxon_dogmas_The_negative_symptoms_of_schizophrenia_lessons Accessed on: 26-11-2023
[11]
Maes, M.H.J.; Stoyanov, D. False dogmas in mood disorders research: Towards a nomothetic network approach. World J. Psychiatry, 2022, 12(5), 651-667.
[http://dx.doi.org/10.5498/wjp.v12.i5.651] [PMID: 35663296]
[12]
Andreasen, N.C. The scale for the assessment of negative symptoms (SANS): conceptual and theoretical foundations. Br. J. Psychiatry, 1989, 155(S7), 49-52.
[http://dx.doi.org/10.1192/S0007125000291496] [PMID: 2695141]
[13]
Crow, T.J. Positive and negative schizophrenic symptoms and the role of dopamine. Br. J. Psychiatry, 1980, 137(4), 383-386.
[http://dx.doi.org/10.1192/S0007125000071919] [PMID: 7448479]
[14]
NHS. Available from: https://www.nhs.uk/conditions/schizophrenia/symptoms/ Accessed June 14, 2019
[15]
NIHM Schizophrenia. Available from: https://www.nimh.nih.gov/health/topics/schizophrenia/index.shtml Accessed June 14, 2019
[16]
Almulla, A.F.; Al-Hakeim, H.K.; Maes, M. Schizophrenia phenomenology revisited: positive and negative symptoms are strongly related reflective manifestations of an underlying single trait indicating overall severity of schizophrenia. CNS Spectr., 2021, 26(4), 368-377.
[http://dx.doi.org/10.1017/S1092852920001182] [PMID: 32431263]
[17]
Maes, M.; Almulla, A.F. Research and diagnostic algorithmic rules (radar) and radar plots for the first episode of major depressive disorder: effects of childhood and recent adverse experiences on suicidal behaviors, neurocognition and phenome features. Brain Sci., 2023, 13(5), 714.
[http://dx.doi.org/10.3390/brainsci13050714] [PMID: 37239186]
[18]
Maes, M.; Moraes, J.B.; Congio, A.; Vargas, H.; Nunes, S. Research and diagnostic algorithmic rules (radar) for mood disorders, recurrence of illness, suicidal behaviours, and the patient’s lifetime trajectory. Acta Neuropsychiatr., 2023, 35(2), 104-117.
[http://dx.doi.org/10.1017/neu.2022.31] [PMID: 36380512]
[19]
Maes, M.; Vojdani, A.; Geffard, M.; Moreira, E.G. ; Barbosa, D.S.; Michelin, A.P.; Semeão, L.O.; Sirivichayakul, S.; Kanchanatawan, B. Schizophrenia phenomenology comprises a bifactorial general severity and a single-group factor, which are differently associated with neurotoxic immune and immune-regulatory pathways. Biomol. Concepts, 2019, 10(1), 209-225.
[http://dx.doi.org/10.1515/bmc-2019-0023] [PMID: 31734647]
[20]
Maes, M.; Kanchanatawan, B. In (deficit) schizophrenia, a general cognitive decline partly mediates the effects of neuro-immune and neuro-oxidative toxicity on the symptomatome and quality of life. CNS Spectr., 2021, 12, 1-10.
[http://dx.doi.org/10.1017/S1092852921000419] [PMID: 33843548]
[21]
CANTAB. The most validated cognitive research software. 2018. Available from: http://www.cambridgecognition.com/cantab/ Accessed on: October 1, 2018.
[22]
CERAD – an overview: the consortium to establish a registry for alzheimer’s disease. 1986. Available from: http://cerad.mc.duke. edu/
[23]
WHO. Study protocol for the World Health Organization project to develop a Quality of Life assessment instrument (WHOQOL). Qual. Life Res., 1993, 2(2), 153-159.
[http://dx.doi.org/10.1007/BF00435734] [PMID: 8518769]
[24]
EuroQoL. The EQ-5D 2023 EQ-5D instruments, 2023. Available from: http://euroqol.org Accessed on: 26-11-2023.
[25]
Shepherd, M. Two faces of emil kraepelin. Br. J. Psychiatry, 1995, 167(2), 174-183.
[http://dx.doi.org/10.1192/bjp.167.2.174] [PMID: 7582666]
[26]
Berrios, G.E. Eugen Bleuler’s place in the history of psychiatry. Schizophr. Bull., 2011, 37(6), 1095-1098.
[http://dx.doi.org/10.1093/schbul/sbr132] [PMID: 21914646]
[27]
Moskowitz, A.; Heim, G. Eugen Bleuler’s Dementia praecox or the group of schizophrenias (1911): a centenary appreciation and reconsideration. Schizophr. Bull., 2011, 37(3), 471-479.
[http://dx.doi.org/10.1093/schbul/sbr016] [PMID: 21505113]
[28]
Davis, J.; Moylan, S.; Harvey, B.H.; Maes, M.; Berk, M. Neuroprogression in schizophrenia: Pathways underpinning clinical staging and therapeutic corollaries. Aust. N. Z. J. Psychiat., 2014, 48(6), 512-529.
[http://dx.doi.org/10.1177/0004867414533012] [PMID: 24803587]
[29]
Maes, M.; Sirivichayakul, S.; Matsumoto, A.K.; Michelin, A.P.; de Oliveira Semeão, L.; de Lima Pedrão, J.V.; Moreira, E.G ; Barbosa, D.S.; Carvalho, A.F.; Solmi, M.; Kanchanatawan, B. Lowered antioxidant defenses and increased oxidative toxicity are hallmarks of deficit schizophrenia: a nomothetic network psychiatry approach. Mol. Neurobiol., 2020, 57(11), 4578-4597.
[http://dx.doi.org/10.1007/s12035-020-02047-5] [PMID: 32754898]
[30]
Roomruangwong, C.; Noto, C.; Kanchanatawan, B.; Anderson, G.; Kubera, M.; Carvalho, A.F.; Maes, M. The role of aberrations in the immune-inflammatory response system (IRS) and the compensatory immune-regulatory reflex system (CIRS) in different phenotypes of schizophrenia: the IRS-CIRS theory of schizophrenia. Mol. Neurobiol., 2020, 57(2), 778-797.
[http://dx.doi.org/10.1007/s12035-019-01737-z] [PMID: 31473906]
[31]
Sirivichayakul, S.; Kanchanatawan, B.; Thika, S.; Carvalho, A.F.; Maes, M. Eotaxin, an endogenous cognitive deteriorating chemokine (ECDC), is a major contributor to cognitive decline in normal people and to executive, memory, and sustained attention deficits, formal thought disorders, and psychopathology in schizophrenia patients. Neurotox. Res., 2019, 35(1), 122-138.
[http://dx.doi.org/10.1007/s12640-018-9937-8] [PMID: 30056534]

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