Skip to main content

Advertisement

Log in

The Blood–Brain Barrier: Much More Than a Selective Access to the Brain

  • Review Article
  • Published:
Neurotoxicity Research Aims and scope Submit manuscript

Abstract

The blood–brain barrier is a dynamic structure, collectively referred to as the neurovascular unit. It is responsible for the exchange of blood, oxygen, ions, and other molecules between the peripheral circulation and the brain compartment. It is the main entrance to the central nervous system and as such critical for the maintenance of its homeostasis. Dysfunction of the blood–brain barrier is a characteristic of several neurovascular pathologies. Moreover, physiological changes, environmental factors, nutritional habits, and psychological stress can modulate the tightness of the barrier. In this contribution, we summarize our current understanding of structure and function of this important component of the brain. We also describe the neurological deficits associated with its damage. A special emphasis is placed in the effect of the exposure to xenobiotics and pollutants in the permeability of the barrier. Finally, current protective strategies as well as the culture models to study this fascinating structure are discussed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1

modified from Rustenhoven et al. (2017)

Fig. 2

modified from Nian et al. (2020)

Fig. 3

modified from Stone et al. (2019)

Similar content being viewed by others

Abbreviations

BBB :

Blood–brain barrier

BECs :

Endothelial cells

CNS :

Central nervous system

NVU :

Neurovascular unit

TJs :

Tight junctions

AD :

Alzheimer disease

PD :

Parkinson disease

JAMs :

Junction adhesion molecules

ZO :

Zonula occluddens

TEER :

Transendothelial electrical resistance

JACOP :

Junction-associated coiled-coil protein

MAGI:

Membrane-associated guanylate kinase

AJs :

Adherens junctions

PECAM :

Platelet endothelial cell adhesion molecules

MRP :

Multidrug-resistance associated protein

TGFβ :

Transforming growth factor-β

GDNF :

Glial-derived neurotrophic factor

bFGF :

Basic fibroblast growth factor

AQP4 :

Water channel aquaporin 4

IL-1β :

Interleukin-1β

TNF-α :

Tumor necrosis factor-α

ABC :

ATP-binding cassette transporters

GLUT1 :

Glucose transporter 1

MFSD2A :

Major facilitator superfamily domain containing 2A

NKCC :

Na+-K+-Cl cotransporter

Pgp :

P-glycoprotein

Bcrp :

Breast cancer resistance protein

LRP1 :

Lipoprotein receptor-related protein 1

SLCs :

Solute carriers

PDGFR :

Platelet-derived growth factor

VEGF :

Vascular endothelial growth factor

Aβ :

Amyloid beta

RAGE :

Receptor for advanced glycation end-products

MMPs :

Matrix metalloproteinases

HIF-1 α:

Hypoxia-inducible factor-1α

DHA :

Acid docosahexaenoic

HPA :

Hypothalamic pituitary adrenal

S100β :

S100 calcium binding protein B

METH :

Methamphetamine

APC :

Activated protein C

TBI :

Traumatic brain injury

ALS :

Ameotrophic lateral sclerosis

PAR1 :

Protease activated receptor 1

PI3K :

Phosphatidylinositol-4,5-bisphosphate 3-kinase

HBMECs :

Human brain endothelial cells

ISF :

Insterstitial fluid

IL-6:

Interleukin-6

NAc:

Nucleus accumbens

HADC1:

Histone deacetylase 1

APOE4:

Apolipoprotein-E4

MS:

Multiple sclerosis

References

Download references

Acknowledgements

Fredy Sanchez Cano is supported by Conacyt and the work in the lab is supported by grants from Conacyt (255087) to AO.

Funding

Conacyt 255087, Conacyt PhD scholarship 755526.

Author information

Authors and Affiliations

Authors

Contributions

AO conceived the original idea and wrote the final version. FSC and LCRHK prepared the first draft of the manuscript and the figures. All authors have read and approved the final manuscript.

Corresponding author

Correspondence to Arturo Ortega.

Ethics declarations

Conflict of Interest

The authors declare no competing interests.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Sanchez-Cano, F., Hernández-Kelly, L.C. & Ortega, A. The Blood–Brain Barrier: Much More Than a Selective Access to the Brain. Neurotox Res 39, 2154–2174 (2021). https://doi.org/10.1007/s12640-021-00431-0

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12640-021-00431-0

Keywords

Navigation