Anatomical and Structural Connectivity in Two Psychotic Phenotypes : Periodic Catatonia and Cataphasia

Completed

• Conditions: Catatonia; Schizophrenia
• Interventions: Other: Quantitative multiparametric and functional MRI

• Registration Number: NCT02868879
• Lead Sponsor: University Hospital, Strasbourg, France

Brief Summary

The different subtypes of Schizophrenia might have a disordered connectivity as their final common pathways.

The investigators will use multimodal structural MRI to assess anatomical connectivity on the one side and its functional consequence on functional connectivity on the other side to assess two phenotypes of psychosis : periodic catatonia and cataphasia in comparison with control subjects.

The coherence between structural and functional anomalies will be especially studied.

Detailed Description

Not available

Study Timeline

• Study Start: 2006-09-25
• Study First Submitted: 2016-08-05
• Study First Submitted QC: 2016-08-11
• Study First Posted: 2016-08-16
• Primary Completion: 2019-09
• Study Completion: 2019-09
• Status Verified: 2019-10
• Last Update Submitted: 2019-10-18
• Last Update Posted: 2019-10-21

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 162

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Schizophrenia	Quantitative multiparametric and functional MRI	-
Normal controls.	Quantitative multiparametric and functional MRI	-

Primary Outcome Measures

Name	Time	Method
Changes in structural and functional connectivity according to the phenotype. Correlation between these changes	Subjects will be assessed only once.	Statistical parametric mapping (SPM) will be applied on quantitative maps : rCBF (ml/100g/min), susceptibility (part per billion), R1, R2, R2\* (all expressed in ms-1), fractional anisotropy (fraction), averaged diffusivity (μm²/sec), macromolecular proton fraction (percentage), cortical thickness (mm), VBM (probability of grey and white matter) and contrast maps (BOLD signal correlation with the anterior cingulate ROI).

Secondary Outcome Measures

Name	Time	Method
Changes in rCBF and cognition according to the phenotype. Correlation between the different changes and the symptomatic scales.	Subjects will be assessed only once.	Symptomatic scales : PANSS, SANS, SAPS, Calgary, Bush and Francis catatonia scale, the psychological experimental test operationalized for cataphasia, Clinician-rated dimension of psychosis symptom severity questionnaire assessing handedness, anhedonia, vigilance, QoL, activity, handicap, ruminations, depression and personality.; Cognitive tests : grammar tests, semantic priming, implicit memory, CPT, fNART, Mill-Hill (part B)

Trial Locations

Locations (1)

Service de Psychiatrie, Hôpital Civil, Hôpitaux Universitaires de Strasbourg; 🇫🇷 Strasbourg, France