Background
This study directly assessed, for the first time, whether, as expected under the membrane phospholipid hypothesis of schizophrenia, there was a change in brain cell motion-restricted membrane phospholipids in vivo in male forensic patients with schizophrenia who had seriously and violently offended (homicide, attempted murder, or wounding with intent to cause grievous bodily harm) while psychotic, by quantification of the broadband resonance signal from 31-phosphorus neurospectroscopy scans.
Materials and methods
Cerebral 31-phosphorus magnetic resonance spectroscopy was carried out in 15 male patients with schizophrenia who had seriously and violently offended (homicide, attempted murder, or wounding with intent to cause grievous bodily harm) while psychotic and in 12 age- and sex-matched normal control subjects. Data were obtained using a 1.5 T Marconi Eclipse system with a birdcage quadrature head coil dual-tuned to proton (64 MHz) and 31P (26 MHz). T1-weighted magnetic resonance images were acquired for spectral localization. Spectra were obtained using an image-selected in vivo spectroscopy sequence (TR = 10 s; 64 signal averages) localized on a 70 × 70 × 70 mm3 voxel.
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Results
There was no significant difference in the broad resonances between the two groups, with the mean (standard error) percentage broadband signal for the patients being 57.8 (5.6) and that for the control subjects 57.7 (6.0). The phosphomonoesters and phosphodiesters narrow signals also did not differ between the groups.
Conclusions
Our data suggest that the membrane phospholipid hypothesis of schizophrenia may not apply to the subgroup of schizophrenia patients who have seriously and violently offended.
Acknowledgements
We thank the Three Bridges Medium Secure Unit and the MRC.
Open Access
This article is published under license to BioMed Central Ltd. This is an Open Access article is distributed under the terms of the Creative Commons Attribution License (
https://creativecommons.org/licenses/by/2.0
), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.