Acta Neuropathologica

, Volume 43, Issue 3, pp 205–211 | Cite as

Ultrastructural appearances of the spinal microvasculature between 12 hours and 5 days after impact injury

  • Ian R. Griffiths
  • M. McCulloch
  • R. A. Crawford
Original Investigations
  • 12 Downloads

Summary

The ultrastructural appearance of the spinal microvasculature was studied from 12 h to 5 days after an impact injury. At 12 h after impact many vessels were normal but astrocytic swelling and protein extravasation were common and with greater impacts, more vessels contained cell aggregates. Neutrophils were common in the perivascular spaces (PVS). At 48 hours the cytoplasm of some endothelial cells was “watery” and swollen and contained vesico-tubular profiles. Other endothelial cells and some pericytes contained numerous free ribosomes, increased rough endoplasmic reticulum (RER) and occasional lipid inclusions. By 3 days the PVS contained numerous reactive cells with an increased number of ribosomes, both free and attached. Most of these cells were probably derived from circulating monocytes. By 5 days there was a decrease in ribosomal numbers compared to those seen earlier but vesicles, Golgi apparatus and multivesicular bodies were prominent. The PVS contained numerous macrophages and increased numbers of fibroblasts. From 49 h to 5 days small vessels with endothelial cells, pericytes and basement membranes and one or more rudimentary lumina were found. Occasional cell/basement membrane profiles with no lumina were encountered. These various structures are thought to represent regenerating new vessels.

Key words

Spinal cord injury Microvasculature Endothelial cell degeneration and regeneration New vessel formation 

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References

  1. Adrian, E. K.: Cell division in injured spinal cord. Am. J. Anat.123, 501–520 (1968)Google Scholar
  2. Adrian, E. K., Williams, M. G.: Cell proliferation in injured spinal cord. An electron microscopic study. J. Comp. Neurol.151, 1–24 (1973)Google Scholar
  3. Barron, K. D., Means, E. D., Feng, T., Harris, H.: Ultrastructure of retrograde degeneration in thalamus of rat. 2. Changes in vascular elements and transvascular migration of leukocytes. Exp. Mol. Path.20, 344–362 (1974)Google Scholar
  4. Cancilla, P. A., Baker, R. N., Pollock, P. S., Frommes, S. P.: The reaction of pericytes of the central nervous system to exogenous protein. Lab. Invet.26, 376–383 (1972)Google Scholar
  5. Garcia, J. H., Cox, J. V., Hudgin, W. R.: Ultrastructure of the microvasculature in experimental cerebral infarction. Acta Neuropathol. (Berl.)18, 273–285 (1971)Google Scholar
  6. Griffiths, I. R., Burns, N., Crawford, R. A.: Early vascular changes in the spinal grey matter following impact injury. Acta Neuropathol. (Berl.)41, 33–39 (1978)Google Scholar
  7. Hill, C. P.: Ultrastructural changes in the capillary bed of the rat cerebral cortex in anoxic-ischemic brain lesions. Am. J. Pathol.44, 531–551 (1964)Google Scholar
  8. Huntington, H. W., Terry, R. D.: The origin of the reactive cells in cerebral stab wounds. J. Neuropathol. Exp. Neurol.25, 646–653 (1966)Google Scholar
  9. Hurley, J. V., Edwards, B.: Acute inflammation: A combined light and electron-microscope study of the vascular response to incisional and crushing injury of skeletal muscle in the rat. J. Pathol.98, 41–52 (1969)Google Scholar
  10. Imamoto, K., Leblond, C. P.: Presence of labelled monocytes, macrophages and microglia in a stab wound of the brain following an injection of bone marrow cells labelled with 3H-uridine into rats. J. Comp. Neurol.174, 255–279 (1977)Google Scholar
  11. Klatzo, I., Piraux, A., Laskowski, E. J.: The relationship between edema, blood-brain-barrier and tissue elements in a local brain injury. J. Neuropathol. Exp. Neurol.17, 548–564 (1958)Google Scholar
  12. Konigsmark, B. W., Sidman, R. L.: Origin of brain macrophages in the mouse. J. Neuropathol. Exp. Neurol.22, 643–676 (1963)Google Scholar
  13. Matthews, M. A.: Reactive events in cerebral microvasculature associated with neural degeneration in thalamic relay nuclei. In: The cerebral vessel wall. J. Cervos-Navarro, E. Betz, F. Matakas, and R. Wullenweber (eds.), pp. 83–95. New York: Raven Press 1976Google Scholar
  14. Matthews, M. A., Kruger, L.: Electron microscopy of non neuronal cellular changes accompanying neural degeneration in thalamic nuclei of the rabbit. Reactive haematogenous and perivascular elements within the basal lamina. J. Comp. Neurol.148, 285–312 (1973)Google Scholar
  15. Maxwell, D. S., Kruger, L.: Small blood vessels and the origin of phagocytes in the rat cerebral cortex following heavy particle irradiation. Exp. Neurol.12, 33–54 (1965)Google Scholar
  16. Mori, S., Leblond, C. P.: Identification of microglia in light and electron microscopy. J. Comp. Neurol.135, 57–80 (1969)Google Scholar
  17. Schoefl, G. I.: Studies on inflammation. III. Growing capillaries, their structure and permeability. Virchows Arch [Pathol. Anat.]337, 97–141 (1963)Google Scholar
  18. Stensaas, L. J.: Pericytes and perivascular microglial cells in the basal forebrain of the neonatal rabbit. Cell. Tissue Res.158, 517–544 (1975)Google Scholar
  19. Weller, R. O., Foy, M., Cox, S.: The development and ultrastructure of the microvasculature in malignant gliomas. J. Neuropath. appl. Neurobiol.3, 307–322 (1977)Google Scholar
  20. Van Deurs, B.: Observations on the blood brain barrier in hypertensive rats, with particular references to phagocytic pericytes. J. Ultrastruct. Res.56, 65–77 (1976)Google Scholar

Copyright information

© Springer-Verlag 1978

Authors and Affiliations

  • Ian R. Griffiths
    • 1
  • M. McCulloch
    • 1
  • R. A. Crawford
    • 1
  1. 1.Department of Veterinary SurgeryUniversity of Glasgow, Veterinary SchoolGlasgowScotland

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