White matter tracts related to memory and emotion in very preterm children.

BACKGROUND: Very preterm (VP) children are at risk of memory and emotional impairments; however, the neural correlates remain incompletely defined. This study investigated the effect of VP birth on white matter tracts traditionally related to episodic memory and emotion. METHODS: The cingulum, fornix, uncinate fasciculus, medial forebrain bundle and anterior thalamic radiation were reconstructed using tractography in 144 VP children and 33 full-term controls at age 7 years. RESULTS: Compared with controls, VP children had higher axial, radial, and mean diffusivities and neurite orientation dispersion, and lower volume and neurite density in the fornix, along with higher neurite orientation dispersion in the medial forebrain bundle. Support vector classification models based on tract measures significantly classified VP children and controls. Higher fractional anisotropy and lower diffusivities in the cingulum, uncinate fasciculus, medial forebrain bundle and anterior thalamic radiation were associated with better episodic memory, independent of key perinatal risk factors. Support vector regression models using tract measures did not predict episodic memory and emotional outcomes. CONCLUSIONS: Altered tract structure is related to adverse episodic memory outcomes in VP children, but further research is required to determine the ability of tract structure to predict outcomes of individual children. IMPACT: We studied white matter fibre tracts thought to be involved in episodic memory and emotion in VP and full-term children using diffusion magnetic resonance imaging and machine learning. VP children have altered fornix and medial forebrain bundle structure compared with full-term children. Altered tract structure can be detected using machine learning, which accurately classified VP and full-term children using tract data. Altered cingulum, uncinate fasciculus, medial forebrain bundle and anterior thalamic radiation structure was associated with poorer episodic memory skills using linear regression. The ability of tract structure to predict episodic memory and emotional outcomes of individual children based on support vector regression was limited.

XMaS @ the ESRF.

This paper describes the motivation for the design and construction of a beamline at the European Synchrotron Radiation Facility (ESRF) for the use of UK material scientists. Although originally focused on the study of magnetic materials, the beamline has been running for 20 years and currently supports a very broad range of science as evidenced by the research topics highlighted in this article. We describe how the beamline will adapt to align with the ESRF's upgrade to a diffraction limited storage ring. This article is part of the theme issue 'Fifty years of synchrotron science: achievements and opportunities'.

Multi-professional-delivered enhanced supportive care improves quality of life for patients with incurable cancer.

BACKGROUND:: Enhanced supportive care (ESC) promotes the earlier implementation of supportive care within cancer care. While earlier supportive care has been demonstrated to improve patient outcomes, the model of delivery is variable. The Clatterbridge Cancer Centre has developed a multi-professional delivered model with clinical nurse specialists providing ongoing patient review and care. METHOD:: A retrospective single-system design was used to assess longitudinal changes in Integrated Palliative Care Outcome Scale (IPOS) scores as indicators of quality of life. For other outcomes, a retrospective case control analysis was undertaken. RESULTS:: Statistically significant improvements in all IPOS scores were observed for patients attending ESC. Compared to controls, quantitative outcomes included prolonged survival and reduced chemotherapy-related mortality. Multi-professional delivered ESC successfully improves quality of life and outcomes.

European Synchrotron User Organization established.

A report on the establishment of the European Synchrotron User Organization (ESUO), a body representing the interests of synchrotron radiation users across Europe.

Differential brain activation in exclusively homosexual and heterosexual men produced by the selective serotonin reuptake inhibitor, fluoxetine.

A number of studies have shown a relationship between "sexual orientation" and size of various brain nuclei. We hypothesized that neurotransmitter differences might parallel neuroanatomical differences in the hypothalamus. We administered 40 mg of fluoxetine as a challenge to the serotonergic systems of exclusively homosexual and exclusively heterosexual men and measured cerebral metabolic changes with fluorodeoxyglucose positron emission tomography (FDG-PET). The metabolic differences we observed might reflect underlying neurochemical differences between homosexual and heterosexual men.

Positron emission tomography in central nervous system drug discovery and development.

Genetics, neuroscience, and imaging science have advanced greatly in the last few years. These advances can be brought together and applied in creative new ways to make available better drugs for treating neuropsychiatric disorders and for getting candidate drugs through the development process faster. One particular approach, built around [18F]fluordeoxyglucose positron emission tomography, is described.