http://www.nature.com/srep/2013/130904/srep02582/full/srep02582.html
- Scientific Reports
- 3,
- Article number:
- 2582
- doi:10.1038/srep02582
- Received
- Accepted
- Published
In the brain, a
paravascular space exists between vascular cells and astroglial
end-foot processes, creating a continuous sheath surrounding blood
vessels. Using in vivo two-photon imaging we demonstrate that the
paravascular circulation facilitates selective transport of small
lipophilic molecules, rapid interstitial fluid movement and widespread
glial calcium signaling. Depressurizing the paravascular system leads to
unselective lipid diffusion, intracellular lipid accumulation and
pathological signaling in astrocytes. As the central nervous system is
devoid of lymphatic vessels, the paravascular space may serve as a
lymphatic equivalent that represents a separate highway for the
transport of lipids and signaling molecules.
No comments:
Post a Comment