Controlled ultraviolet irradiation generates endothelial damage without affecting the nerve terminals of the cerebral artery in cats

Kazuo Isozumi, Fumio Gotoh, Atsuo Koto, Norihiro Suzuki, Yoko Tsuzuki

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1 Citation (Scopus)


The vesicles of adventitial autonomic nerve terminals were examined quantitatively under an electron microscope in controlled ultraviolet ray (UV)-irradiated cerebral vessels. Five cats whose basilar arteries were irradiated with UV (UV group) and 5 cats whose basilar arteries were irradiated with visible rays (control group) were compared. Endothelial vacuolation was observed only in the UV group. There was no statistically significant difference in the diameters of the dense-cored vesicles, related to noradrenaline, and clear vesicles, related to acetylcholine, between the two groups. It is concluded that controlled UV irradiation which generates endothelial damage does not affect the vascular adventitia ultrastructurally.

Original languageEnglish
Pages (from-to)45-48
Number of pages4
JournalNeuroscience Letters
Issue number1
Publication statusPublished - 1992 Mar 16



  • Autoregulation
  • Cerebral circulation
  • Clear vesicle
  • Dense-cored vesicle
  • Endothelial damage
  • Perivascular nerve terminal
  • Ultraviolet rays

ASJC Scopus subject areas

  • Neuroscience(all)

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