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Attention deficit hyperactivity disorder (ADHD) is a psychiatric disease that affects children and persists in 50% of cases into adulthood. Magnetic Resonance Imaging (MRI) studies in children suggest that ADHD is associated with structural abnormalities in the brain. However, very little research has been carried out on adult ADHD. Using high-resolution(More)
OBJECTIVE Results in adult attention deficit hyperactivity disorder (ADHD) on structural brain changes and the clinical relevance are contradictory. The aim of this study was to investigate whether in adult patients with ADHD hippocampal or amygdala volumes differs from that in healthy controls and patients with major depression (MD). METHOD Twenty(More)
We investigated in a rabbit model, the eye distribution of topically instilled benzalkonium_(BAK) chloride a commonly used preservative in eye drops using mass spectrometry imaging. Three groups of three New Zealand rabbits each were used: a control one without instillation, one receiving 0.01%BAK twice a day for 5 months and one with 0.2%BAK one drop a day(More)
Imaging mass spectrometry is currently receiving a significant amount of attention in the mass spectrometric community. It offers the potential of direct examination of biomolecular patterns from cells and tissue. This makes it a seemingly ideal tool for biomedical diagnostics and molecular histology. It is able to generate beautiful molecular images from a(More)
With new emerging mass spectrometry technologies, it can now be demonstrated that direct tissue analysis is feasible using matrix-assisted laser desorption/ionization (MALDI) sources. A major advantage of direct MALDI analysis is to avoid time-consuming extraction, purification or separation steps, which have the potential for producing artifacts. Direct(More)
BACKGROUND Point mutations in genes encoding NADP+-dependent isocitrate dehydrogenases (especially IDH1) are common in lower grade diffuse gliomas and secondary glioblastomas and occur early during tumor development. The contribution of these mutations to gliomagenesis is not completely understood and research is hampered by the lack of relevant tumor(More)
AMP-activated protein kinase (AMPK) is suppressed in diabetes and may be due to a high ATP/AMP ratio, however the quantitation of nucleotides in vivo has been extremely difficult. Via matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) to localize renal nucleotides we found that the diabetic kidney had a significant increase in(More)
The problems involved in treating psychogenic movement disorders in mentally retarded persons are pointed out. A psychoanalytic approach is doomed to failure because of the mental handicap. The authors report positive therapeutic results with a 17-year-old girl who had a severe hysterical movement disorder including sudden falls and a grotesque gait.(More)
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