prevention in schizophrenia - fapesp
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Prevention in Schizophrenia
– from Neuroscience to Community
Rodrigo A. BressanProfessor, Department of Psychiatry, Un. Federal de São Paulo, Brazil
Honorary Visiting Professor, Institute of Psychiatry, King’s College London
LAB INTERDISCIPLINARNEUROCIÊNCIAS CLÍNICAS
0 2 4 6 8 10 12
Percent of Total
Disease Burden by Illness DALY - Disability Adjusted Life Year (15-44 anos)
Unipolar depressive disorders
Alcohol use disorders
Schizophrenia
Iron-deficiency anemia
Bipolar affective disorder
Hearing loss, adult onset
HIV/AIDS
Chronic OPD
Osteorthritis
Road traffic accidents0 2 4 6 8 10 16
Source: WHO – World Health Report, 2001
Challenges for Prevention of
Schizophrenia
• A – Limited biological knowledge
• B – Poor effectiveness of treatments
• C – Stigma
Insel, 2013
Schizophrenia –
neurodevelopmental disease
Murray et al., Lancet 1985; Weinberger, Arch Gen Psychiatry 1987
ENVIROMENT
0 5 10 15 20 25 30
GENES
LAB INTERDISCIPLINARNEUROCIÊNCIAS CLÍNICAS
Schizophrenia
DNA
Gene ExpressionCitokines
Immigration/
Urbanicity
Trauma
Bullying
Brain changesStructural/Funcional
Obstetric
complications
Cannabis
Dopamine
sensitization
“ULTRA-HIGH RISK”
1ST EPISODE PSYCHOSIS SCHIZOPHRENIA
CHRONICITY
or
TREATMENT RESISTANCE
PRE-MORBID
Multiphasic Approach
Risk during Neurodevelopment
Schizophrenia
“HIGH RISK”
LAB INTERDISCIPLINARNEUROCIÊNCIAS
CLÍNICAS Multimodal Approach
ARY GADELHA
Integrative Neuroscience
JAIR MARIEpidemiology
• Psychopathology x x x x x
• Cognition x x x x x
• Genetics x x x x x
• Neuroimaging• Structural/Functional
x x x x x
• Molecular Imaging - - x x x
• Neuropeptidases (Ndel) x x x x x
• Sleep x x x x x
• Neurotrophins/ Cytokines
x x x x x
• Animal Models - x x x -
Risk during Neurodevelopment
Psychosis Severity
LAB INTERDISCIPLINARNEUROCIÊNCIAS CLÍNICAS
“ULTRA-HIGH RISK”
1ST EPISODE PSYCHOSIS
SCHIZOPHRENIA
CHRONICITY
or
TREATMENT RESISTANCE
PRE-MORBID“HIGH RISK”
Multiphasic – Multimodal Approach
Schizophrenia
Clinical: PANSS validation, prediction of Treatment
Resistance
Cognition:
•MCCB Matrics validation in Brazil – Regular FAPESP
•Cognitive Rehabilitation – PRONEX
SCZ
p < 0.001
PI100105043Commercial use protected by:
Biomarker for Schizophrenia
Protected by Patent deposition
Reduced dorso-lateral prefrontal cortex in
treatment resistant schizophrenia
Zugman et al., Schiz. Research. 2013.
• Compare cortical thickness between
61 treatment resistant SCZ, 67 non-
resistant and 80 healthy controls.
• TR-SCZ presented widespread
reduction in cortical thickness in
frontal, temporal, parietal and
occipital regions
• TR-SCZ presented significant
reduced DFPFC thickness than
controls.
• Finding suggest cortical thickness of
DLPFC a more severe form of the
disease. Figure : Decreased DLPFC (BA 46) in the TR-SCZ group.
Brain Structure and Treatment Resistance
Gene Modulation of Brain Structure
Ota et al., Schiz. Research 2013..
• 282 patients and 379 controls were genotyped. 138 went to an
MRI scan.
• GG-genotypes carriers presented reduced frontal grey matter
volume.
ZDHHC8 gene may play a role in cortical volumes of patients with schizophrenia.
BDNF modulating cortical thickness in schizophrenia.
Zugman et al., submitted
• BDNF and cortical thickness showed
different patterns of correlation for
patient and healthy control group in
one cluster in the right hemisphere
distributed across the supramarginal,
post central, and inferior frontal
cortices
Figure : Blue shade represents significantcluster at p<0.05 for group*bdnf interaction.Lines represent Freesurfer parcelation regions.
Neurotrophins and Brain Structure
First Episode PsychosisEpigenetics: gene expression and methylation
• 175 drug-naïve 1st episode psychotic patients
First Episode Psychosis
Gene expression (RNA) – Risperidone treatment (2 months)
Ultra-High Risk for Psychosis
Transition Rates to Psychosis (2 years)
Centre Transition rate
PACE 41%
PRIME 38%
TOPP 43%
EDIE 26%
PIER 23%
22%… work in progress
Fusar-Poli et al., 2012
Reference Comparison
Group
N Outcome
PACEMcGorry et al., Am J Psychiatr 2002
1. CBT + risperidone2. Support Therapy
3128
1. ↓ conversion in 6 mo (9,7 vs. 35%), p=0,0262. ↔ in 1 yr
EDIEMorrison et al., Br J Psychiatr 2004
1. CBT2. Monitoring
2929
1. ↓ conversion in 1 yr (6% vs. 26%), p<0,052. ↓ conversion in 3 yr
PRIMEMcGlashan et al., Am J Psychiatr 2006
1. Olanzapine2. Placebo
3129
1. ↓ conversion (15% vs. 38%), p>0.052. ↑ Side effects
Amminger et al., Arch Gen Psychiatr 2010
1. Omega 32. Placebo
4140
1. ↓ conversion (4,9% vs. 27,5%), p=0,004
Conversion to psychosis
– is it possibleto prevent?
Cytokines – new opportunities
Treatment: new opportunities
Sleep – new opportunities
The Epigenetic Challenge
Animal Model Schizophrenia (SHR) –preventive effects strategies
Santos, CM - 2015
~ adolescence
Enriched Environment – prevent schizophrenia like symptoms
~ adulthood
Animal Model Schizophrenia (SHR) –preventive effects strategies
~ adolescence
Canabidiol (CBD) – prevent schizophrenia like symptoms
Locomotion Prepulse Inhibition of Startle Contextual Fear Conditioning
Peres FF, 2015
~ adulthood
Instituto Nacional de
Psiquiatria do Desenvolvimento
Salum et al., Intl J Meth Psychiatr Res, 2014
Dimensional Psychopathology
Structural Brain Trajectories –
hippocampus
Andre Zugman , Sato, Bressan, Jackowsky et al., in preparation
Genetic determinants of brain
morphology
Common genetic variants influence subcortical brain
volumes in ancestrally diverse adolescentsPatrick MA Sleiman1,2, Theodore Satterthwaite3, Sintia L Belangero4,5, John Connolly1, Frank Mentch1, HaijunQiu1, Xiao Chang1, Cecilia Kim1, Renata Pellegrino-Silva1, Kelly Thomas1, Andrea P Jackowski4, Helena PBrentani6,7, Euripedes CM Filho6,7, Giovanni A Salum7,8, Ary Gadelha4, Mackenzie Behr1, Rosetta Chiavacci1,Rueben C Gur3, Rodrigo A Bressan5, Raquel E Gur3 and Hakon Hakonarson1,2.
Sleiman et al., submitted
GWAS study of subcortical brain volumes (MRI) of 1957 individuals
• Philladephia Neurodevelopmental Cohort (age 8-21 years)
• Brazilian High Risk Cohort Study (age 7-15 years).
• 2 loci associated with brain volume also associate with neurocognitive
tests
• For the first time that genetic variants associated with intermediate
phenotypes such as brain imaging data can be predictive of a
behavioral phenotype.
Sato et al., J Psychiatr Res 2014
Functional Brain Trajectories
Functional Brain Trajectories
• centrality angular gyrus during the transition to adolescence
• many subcortical and cerebellar regions.
Functional Brain Trajectories
Altered neurodevelopment trajectory identified using a combination of graph theory and one-class support vector machine to analyze neuroimaging data.
• Assessed brain networks rsfMRI of 622
children and adolescents with increased
risk for psychiatric disorders (7-15 y/o)
• Subjects with atypical brain network
organization had higher levels of
psychopatology
Sato et al., submitted
Figure : Box-plots of EVC at each node with significant mean difference (p<0.05) between the OC-SVM labels (typical vsatypical), CBCL Total and age.
Psychotic experiences: cortical thickness
• Findings may indicate subtle deviant brain maturation
processes that may represent risk for schizophrenia
Ary Gadelha et al., in preparation
• Mental Health Literacy for
teachers
• RCT 80 Special Teachers (PMECs)
• Outcome measures:
• Literacy
• Stigma
• Attitude towards MH
• Scale up: 472 PMCs teachers
Translation to Community
School Mental Health
T1
TO
Randomization 80
A
n=41
n=41
B
n=39
n=32
180Inscriptions
45d
Apolinario et al., 2014; Simões et al., Cad Saud Publ, 2015
Mental Health in Schools – what teachers should know
• Multistage research approach – synergistic
• Multimodal – new questions may be answerd
• Challenges:
– Databank integration
– Data analysis methodology
• Prevention: work in progress…
ConclusionsLAB INTERDISCIPLINAR
NEUROCIÊNCIAS CLÍNICAS
Agradecimentos
LAB INTERDISCIPLINARNEUROCIÊNCIAS CLÍNICAS
SÃO PAULO SCHOOL OF ADVANCED SCIENCE
FOR
PREVENTION OF MENTAL DISORDERS
Disclosure
Unrestricted
Research Grants Scholarshps
Private Companies
Astra Zeneca * *
Janssen * *
Eli Lilly *
Novartis *
Lundbek * *
Roche *
Agnowlegments LAB INTERDISCIPLINARNEUROCIÊNCIAS
CLÍNICAS
Research Grants Scholarships
Research Agencies
Pronex
INCT
RCUK
regular
*
*
*
*
*
*
*
*
Pronex
INCT
RCUK
*
*
*
*
*
*
MPhil / PhD
Post-Doc*
MRC - UKAPPLAUSE
RCUK
*
**
*
Fundação Safra *
Fundação ABADS *
DisclosureResearch Grants Speaker/ Board Shareholder
Private Companies
Astra Zeneca *
Janssen * *
Eli Lilly *
Novartis *
Lundbek * *
Roche *
CCTECH Ltda. *
Biomolecular Technology Ltda. *
Research Agencies
FAPESP *
CNPq *
CAPES *
Fundação Safra *
Fundação ABADS *
• The angular gyrus become more central during this maturation
period, while the caudate; cerebellar tonsils, pyramis, thalamus;
fusiform, parahippocampal and inferior semilunar lobe become less
central
• Conclusion: increasing centrality of the angular gyrus during the
transition to adolescence, with a decreasing centrality of many
subcortical and cerebellar regions.Sato et al., Neuroimage 2015
Schizophrenia –
neurodevelopmental disease
Murray et al., Lancet 1985; Weinberger, Arch Gen Psychiatry 1987
0 5 10 15 20 25 30
GENES
LAB INTERDISCIPLINARNEUROCIÊNCIAS
CLÍNICAS
SchizophreniaENVIROMENT
Schizophrenia –
neurodevelopmental disease
Murray et al., Lancet 1985; Weinberger, Arch Gen Psychiatry 1987
ENVIROMENT
0 5 10 15 20 25 30
GENES
LAB INTERDISCIPLINARNEUROCIÊNCIAS
CLÍNICAS
Schizophrenia
GeneticsSuspiciousness
Immigration/
UrbanicityBullying
Personality
Obstetric
complications
Cannabis
Dopamine
sensitization
Schizophrenia –
neurodevelopmental disease
Murray et al., Lancet 1985; Weinberger, Arch Gen Psychiatry 1987
ENVIROMENT
0 5 10 15 20 25 30
GENES
LAB INTERDISCIPLINARNEUROCIÊNCIAS
CLÍNICAS
Schizophrenia
DNA
Gene Expression
Citokines
Immigration/
Urbanicity
Bullying
Brain changesStructural/Funcional
Obstetric
complicationsCannabis
Dopamine
sensitization
Impact
Clinical Findings
Zugman et al., 2013
Psychotic Experiences (CBCL)vs.
Brain Maturation
• Are PE are associated with cortical
thickness? (720 children, 7-15 year-old)
• CBCL Psychotic Experiences scores and
cortical thickness :
– Negative correlation with frontal and
temporal cortices
– Positive correlations with the
occipital cortices
Ary Gadelha et al., in preparation
PRODH polymorphisms, cortical volumes and
thickness in schizophrenia.
Ota et al., Plos One 2014.
• Investigation the effect of 12 polymorphisms of PRODH in
192 patients with schizophrenia.
• One polymorphism associated with schizophrenia
(rs2904552) with the G-allelle
Gene Modulation of Brain Structure
lh_parsorbitalis_volume lh_insula_volume
Clo
se
ness C
oe
ffic
ient
0.0
0.2
0.4
0.6
0.8
1.0
Pars%Orbitalis% Insula%
**%
*%
%Healthy%Controls %%%First%Episode%Psychosis %%%Schizophrenia%Pa<ents%
**%
*%
Chronic SCZ: 143First-episode psychosis: 32Controls: 82
Analysis of brain-netowrk disruptions in First Episode
Psychosis: an approach based on graph analyses of
structural covariance
Zugman et al. , submitted
Etapa 2 - Classifier
Deep Belief Networks are são modelos generativos de redes de arquitetura híbrida com múltiplas camadas ocultas
Etapa 1 - Autoencoder
Results
Differences between groups Input layer
Layer 1 Layer 2 Layer 3 Layer 4
(SCZ-FEP) – (FEP-HC) 0.114 0.039 0.009 1.377 <0.001 (SCZ-FEP) – (SCZ-HC) 0.678 0.237 0.87 1.776 0.012
(FEP-HC) – (SCZ-HC) 0.009 0.027 0.0030 0.99 <0.001
Integrative Neuroscience
• Hierarchical feature representation with deep
learning of schizophrenia MRI data
•
• Walter H. L. Pinaya; Ary Gadelha a; Cristiano Noto
a; Joana B. Balardin; Quirino Cordeiro c; Sintia I. O.
Belangero b; Rodrigo A. Bressan a; Andrea P.
Jackowski a; João Ricardo Sato a, d
• 3 groups of genes:
– Genes expressed in immune-system
– Neurodevelopment
– Transcription Factors Gadelha et al., to be submitted
N=170
Ndel1 Esquizofrenia
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