The symposium brought together participants from a wide range of disciplines - including neurobiology, clinical neuroscience, imaging physics, mathematical modelling, and preclinical research. Researchers from both Norwegian and international institutions contributed, highlighting the growing breadth of the field.
Exploring the Brain’s Barriers and Fluid Dynamics
The programme covered key emerging topics within the field of brain fluid research. A common theme across the presentations was how the brain protects itself, communicates with the rest of the body, and clears waste products - processes increasingly recognised as central to both normal brain function and disease.
The symposium was opened by Centre Director Per Kristian Eide and Executive Director Marie Rognes, before Rune Enger chaired the morning session. The morning began with a deep dive into one of the brain structures that produces cerebrospinal fluid (the choroid plexus) presented by Roosmarijn Vandenbroucke. Research from her group demonstrated how this tissue acts as a key interface between the body and the brain. The talk also highlighted new findings on how immune cells may enter the brain during inflammatory conditions.
Participants were then introduced to the critical role of astrocytes in maintaining the brain’s water and ion homeostasis. Genetic defects in these cells can lead to brain oedema and changes in myelin, providing new insights into rare neurological diseases, and perhaps also into more common conditions such as multiple sclerosis.
Another highlight was a presentation on the transport of cerebrospinal fluid within the brain’s cavities. The tiny cilia on the surface of the cells lining these fluid-filled spaces may be important for driving cerebrospinal fluid movement. Studies using mutated animal models also suggest that impaired cilia function can influence how nerve cells respond to stimuli, though the relevance for humans remains uncertain.
New Methods and Clinical Perspectives
In the afternoon, the focus shifted toward new methods and clinical implications. A new MRI technology capable of visualizing brain pulsations in real time drew considerable interest and may offer researchers entirely new opportunities to study mechanical processes within the brain.
Participants also heard about how lymphatic drainage pathways in the neck may influence the development of Alzheimer’s disease, in addition to receiving an updated and nuanced overview of current knowledge about the glymphatic clearance system. The day concluded with reflections on how modern modelling approaches - both mathematical and physiological - contribute to a more integrated understanding of fluid flow and transport processes in the brain.
A Well-Established Meeting Place for a Growing Research Field
Over its eight iterations, the Oslo Brain Fluid Symposium has developed into an important arena for researchers working on the brain’s fluid systems. This year’s meeting clearly demonstrated how collaboration between medicine, advanced imaging, and mathematical modelling is essential for the field’s continued progress.
“The symposium illustrates how advances in our field emerge from the intersection of experimental animal research, advanced imaging, mathematical modelling and clinical studies, and not least, how broadly this research engages people,” says Centre Director Per Kristian Eide.