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Bridging regional neurovascular unit heterogeneity and cognitive function: a review
Amalia Tsintzou1, Roseline Poirier2, Rania Harati3
1Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), Laboratoire d'Etude de l'Unité Neurovasculaire & Innovation Thérapeutique (LENIT), Gif-sur- Yvette cedex, 91191, France.
Fluids and Barriers of the CNS
|August 21, 2025
Summary
The blood-brain barrier (BBB) exhibits significant heterogeneity across brain structures, impacting neurovascular unit (NVU) function. Understanding this variability is key to treating neurological diseases.
Area of Science:
- Neuroscience
- Cell Biology
- Physiology
Background:
- The blood-brain barrier (BBB) is a critical interface regulating substance exchange in the central nervous system.
- The neurovascular unit (NVU), comprising the BBB, glia, mural cells, and neurons, maintains cerebral homeostasis.
- Emerging research indicates heterogeneity in BBB properties across different brain regions.
Purpose of the Study:
- To synthesize current knowledge on the heterogeneity of NVU elements in various brain structures.
- To pinpoint structural and functional differences in endothelial cells, glial cells, and neurons across brain regions.
- To discuss the link between BBB heterogeneity and cognition in both physiological and pathological states.
Main Methods:
- Literature review and synthesis of existing research on BBB and NVU heterogeneity.
- Comparative analysis of structural and functional characteristics of NVU components across different brain areas.
- Exploration of the relationship between BBB heterogeneity and cognitive functions.
Main Results:
- Significant structural and functional differences exist in endothelial cells, glial cells, and neurons across various brain structures.
- The heterogeneity of the BBB and NVU is evident in distinct brain regions.
- BBB heterogeneity is linked to cognitive processes in both health and disease.
Conclusions:
- The blood-brain barrier is not uniform, exhibiting regional heterogeneity.
- Understanding NVU and BBB heterogeneity is crucial for developing targeted therapies for neurological disorders.
- Further research into BBB heterogeneity could unlock new strategies for treating neurological diseases.
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