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Alteration in creatine phosphate behavior in excited visual cortex of early-stage schizophrenia patients measured by phosphorus magnetic resonance spectroscopy

Published online by Cambridge University Press:  23 March 2020

A. Manzhurtsev ,
N. Semenova ,
M. Ublinskiy ,
T. Akhadov ,
S. Varfolomeev ,
I. Lebedeva  and
V. Kaleda
A. Manzhurtsev*
Affiliation:
Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 501 Enzime catalysis kinetics, Moscow, Russia
N. Semenova
Affiliation:
Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 501 Enzime catalysis kinetics, Moscow, Russia Semenov Institute of Chemical Physics of Russian Academy of Sciences, 0404 Chemical and biological processes dynamics, Moscow, Russia Research Institute of Children's Emergency Surgery and Trauma, Radiology, Moscow, Russia
M. Ublinskiy
Affiliation:
Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 501 Enzime catalysis kinetics, Moscow, Russia Research Institute of Children's Emergency Surgery and Trauma, Radiology, Moscow, Russia
T. Akhadov
Affiliation:
Research Institute of Children's Emergency Surgery and Trauma, Radiology, Moscow, Russia
S. Varfolomeev
Affiliation:
Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 501 Enzime catalysis kinetics, Moscow, Russia
I. Lebedeva
Affiliation:
Mental Health Research Center State Scientific Institution, Neurovisualisation and Multimodal Analysis, Moscow, Russia
V. Kaleda
Affiliation:
Mental Health Research Center State Scientific Institution, Neurovisualisation and Multimodal Analysis, Moscow, Russia
*
*Corresponding author.

Abstract

Introduction

31P MRS is a unique way of in vivo energy metabolism research. This method allowed revealing schizophrenia-induced disturbances of energy exchange in resting state [1]. We use 31P MRS in presence of visual stimulation that allows neuronal energy-consuming processes studying.

Objective

Revealing of stimulation effects on high-energy phosphates (PCr, ATP) in early-stage schizophrenia.

Aim

Discovery of energy processes contribution in schizophrenia pathogenesis.

Methods

Twelve right-handed 18–26 years old male patients with early-staged schizophrenia (F20, ICD-10) and 20 age-matched healthy right-handed controls. Spectra were acquired on Philips Achieva 3.0 T using Rapid Biomed 31P/1H birdcage coil and 2D ISIS pulse sequence. fMRI was used for accurate 2D slice positioning, spectroscopy voxels containing primary visual cortex (V1) were averaged (see Fig. 1). Two 31P spectra of V1 were obtained: firstly in resting state and then during 6 minutes of continuous stimulation by 6 Hz flashing checkerboard. Spectra were processed in jMRUI.

Results

Excitation reduced PCr in the norm and had no effect on schizophrenia (see Fig. 2). No excitation-induced ATP changes in both groups were revealed.

Conclusion

Alteration in PCr behavior in this study witnesses for deviations in energy-consuming processes in schizophrenia. A new scheme of neuronal response to stimulation in schizophrenia is offered.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Type
FC45
Information
European Psychiatry , Volume 33 , Issue S1: Abstracts of the 24th European Congress of Psychiatry , March 2016 , pp. S88
Copyright
Copyright © European Psychiatric Association 2016

Fig. 1 fMRI-guided voxel positioning in visual cortex.

Fig. 2 PCr of visual cortex in the norm (1) and in schizophrenia (2) during continuous stimulation relative to PCr in resting state. * P < 0.05 by Mann-Whitney U-criteria.

References

Du, F. JAMA Psychiatry 2014;71(1):19–2.CrossRefGoogle Scholar
Figure 0

Fig. 1 fMRI-guided voxel positioning in visual cortex.

Figure 1

Fig. 2 PCr of visual cortex in the norm (1) and in schizophrenia (2) during continuous stimulation relative to PCr in resting state. * P < 0.05 by Mann-Whitney U-criteria.

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