Neurobiological effects of work-related stress: protocol for a case-control neuroimaging study

Saga Steinmann Madsen, Albert Gjedde, Lars Brandt, Jesper Pihl-Thingvad, Poul Videbech, Oke Gerke, Poul Flemming Højlund-Carlsen

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Abstract

INTRODUCTION: Stress is one of the greatest burdens of our society and often implies impairments in cognitive and emotional functions. Here, we hypothesise that changes in the brain’s dopamine (DA)-based mesocorticolimbic projections in patients with work-related stress (adjustment disorder) will manifest themselves as altered glucose metabolism in relation to neural activity, and as altered DA radiotracer binding potentials at the relevant receptors. METHODS: Subjects and healthy controls undergo neuropsychiatric tests and PET/MRI with three tracers; 18 F-fluorodeoxyglucose to measure glucose metabolism as a marker of neural activity,11C-raclopride to explore binding potentials in the striatum, and11C-FLB 457 to study possibly impaired mesocortical dopaminergic transmission in the cortex. To demonstrate differences of glucose metabolism, more than 2 × 41 patients/controls are needed. We expect to find that symptoms of cognitive and motivational reward deficits are attributable to changes in the frontal lobe and striatal glucose metabolism in the majority of patients, and that changes of D2-receptor availability and impaired dopaminergic transmission in the striatum and prefrontal cortex are contributing factors. CONCLUSIONS: This project is designed to generate entirely new and objective evidence of stress-induced cerebral illness, and to provide a basis for in-depth research and for a more rational management of this strenuous disorder.

Original languageEnglish
Article numberA5513
JournalDanish Medical Journal
Volume65
Issue number11
Number of pages4
ISSN1603-9629
DOIs
Publication statusPublished - Nov 2018

Keywords

  • Case-Control Studies
  • Corpus Striatum/diagnostic imaging
  • Female
  • Fluorodeoxyglucose F18
  • Frontal Lobe/diagnostic imaging
  • Glucose/metabolism
  • Humans
  • Magnetic Resonance Imaging/methods
  • Male
  • Neuroimaging/methods
  • Occupational Stress/diagnostic imaging
  • Positron-Emission Tomography/methods
  • Prefrontal Cortex/diagnostic imaging
  • Pyrrolidines
  • Raclopride
  • Radiopharmaceuticals
  • Research Design
  • Salicylamides
  • Synaptic Transmission/drug effects

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