Aspects of interastrocytic gap junctions in blood-brain barrier in the experimental penumbra area, revealed by transmission electron microscopy and freeze-fracture.
Interastrocytic gap junctions in the blood-brain barrier of the experimental penumbra area were studied in the cat caudate nucleus 1 h after ischemia. Transmission electron microscopy and freeze-fracture studies revealed only slight changes in gap junctions between astrocytes, indicating that these junctions are very resistant to hypoxia.
D000818:Animals; D001253:Astrocytes / Q000648:ultrastructure*; D001812:Blood-Brain Barrier; D002415:Cats; D002421:Caudate Nucleus / Q000648:ultrastructure; D005614:Freeze Fracturing; D007365:Intercellular Junctions / Q000648:ultrastructure*; D002546:Ischemic Attack, Transient / Q000473:pathology*; D008854:Microscopy, Electron