Skip to main content
Log in

Quantified EEG, somatosensory evoked potentials and cerebral blood flow in monitoring experimental brain ischemia

  • Original Article
  • Published:
The Italian Journal of Neurological Sciences Aims and scope Submit manuscript

Abstract

Cerebral ischemic lesions were induced in rabbits through internal carotid artery embolization by means of microspheres. Different models of stroke ranging from single focal cortical lesion to massive bilateral brain edema were reproduced and monitored up to the 24th hour by electroencephalogram (EEG and QEEG), somatosensory evoked potentials (SEPs), cerebral blood flow (CBF), platelet aggregation. The site and extent of the lesions were verified by histological examinations. Results obtained and physiopathological implications are discussed.

Sommario

Lesioni ischemiche cerebrali sono state indotte sperimentalmente nel coniglio mediante embolizzazione con microsfere attraverso l'arteria carotide interna. Modelli diversi, dall'ischemia corticale singola fino all'edema cerebrale bilaterale massivo, sono stati monitorizzati per 24 ore mediante l'elettroencefalogramma (EEG e QEEG), potenziali evocati somatosensoriali (SEPs), flusso ematico cerebrale (CBF), aggregazione piastrinica.

Vengono discussi sia i risultati ottenuti sia alcune considerazioni fisiopatologiche.

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.

Similar content being viewed by others

References

  1. Angelini G., Lanza E., Rozza Dionigi A., Piccinini F.:Comparative evaluation of different methods for calculation of cerebral blood flow (CBF) in nonanesthetized rabbits. J. Pharm. Meth. 9: 165–173, 1983.

    CAS  Google Scholar 

  2. Breddin K., Grun H., Krywanek H.J., Schremmer W.P.:Zur Messung der “spontanen” Thrombocytenaggregation. Plattchenaggregationtest III. Methodik Klin. Wschr. 53: 81–89, 1975.

    CAS  Google Scholar 

  3. Breddin K., Bauke J.:Thrombocytenagglutination bei Befasskrankheiten. Blut 11: 144–150, 1965.

    Article  Google Scholar 

  4. Born G.V.R.:Quantitative investigation into the aggregation of blood platelet. J. Physiol. 162: 67–89, 1962.

    Google Scholar 

  5. Coyer P.E., Lesnick J.E., Michele J.J., Simeone F.A.:Failure of somatosensory evoked potential following middle cerebral artery occlusion and highgrade ischemia in the cat-Effects of hemodilution. Stroke 17: 37–43, 1986.

    CAS  PubMed  Google Scholar 

  6. Hegedus K., Fekete I., Tury F., Molnar L.:Experimental focal cerebral ischemia in rabbits. J. Neurol. 232: 223–230, 1985.

    CAS  PubMed  Google Scholar 

  7. Hirs P.D., Hillis L.D., Campbell W.B., Firth B.G., Willerson J.T.:Release of prostaglandins and thromboxane into the coronary circulation in patients with ischemic heart disease. N. Engl. J. Med. 304: 685–691, 1981.

    Google Scholar 

  8. Iannotti F., Hoff J.T., Schielke G.P.:Brain tissue pressure in focal cerebral ischemia, J. Neurosurg 62: 83–89, 1985.

    CAS  PubMed  Google Scholar 

  9. Kaneko D., Nakamura N., Ogawa T.:Cerebral infarction in rats using homologous blood emboli: development of a new experimental model. Stroke 16: 76–84, 1985.

    CAS  PubMed  Google Scholar 

  10. Kudo M., Aoyama A., Ichimori S., Fukanaga N.:An animal model of cerebral infarction. Homologous blood clot emboli in rats. Stroke 13: 505–508, 1982.

    CAS  PubMed  Google Scholar 

  11. Lesnick J.E., Michele J.J., Simeone F.A., De Feo S., Welsh F.A.:Alteration of somatosensory evoked potentials in response to global ischemia. J. Neurosurg. 60: 490–494, 1984.

    CAS  PubMed  Google Scholar 

  12. Meyer K.L., Dempsey R.J., Roy M.W., Donaldson D.L.:Somatosensory evoked potentials as a measure of experimental cerebral ischemia. J. Neurosurg. 62: 269–275, 1985.

    CAS  PubMed  Google Scholar 

  13. Mies G., Hoppe G., Hossmann K.A.:Limitations of EEG frequency analysis in the diagnosis of intracerebral diseases. In: Pfurtscheller G., Jonkman E.J., Lopes da Silva F.H., eds. Progress in Brain Research, Amsterdam, Elsevier, vol. 62, 85–105, 1984.

    Google Scholar 

  14. Molinari G.F.:Experimental cerebral infarction. I. Selective selective occlusion of intracranial arteries in dog. Stroke 1: 224–231, 1970.

    CAS  PubMed  Google Scholar 

  15. Molinari G.F., Laurent J.P.:A classification of experimental models of brain-ischemic. Stroke 7: 14–17, 1976.

    Google Scholar 

  16. Monnier M., Gangloff H.:Atlas for stereoataxic brain research on the conscious rabbit. Elsevier Publishing Company. Amsterdam/New York, 1961.

    Google Scholar 

  17. Petrachi R., Romani A., Cosi V.:Somatosensory evoked potentials by median nerve stimulation in rabbits. II. Normative data of surface recordings. Boll. Soc. It. Biol. Sper. in press.

  18. Romani A., Petrachi G., Cosi V.:Somatosensory evoked potentials by median nerve stimulation in rabbits. I. Source localization by cortical and stereoataxic recordings. Boll. Soc. It. Biol. Sper. in press.

  19. Rosner G., Graf R., Kataoka K., Heiss W.D.:Selective functional vulnerability of cortical neurones following transient MCA-occlusion in the cat. Stroke 17: 76–81, 1986.

    CAS  PubMed  Google Scholar 

  20. Rozza Dionigi A., Favino A., Lanza E., Favalli L., Piccinini F., Aprile C.:Method for the determination of cerebral blood flow in conscious rabbit. J. Pharm. Meth. 4: 79–87, 1980.

    CAS  Google Scholar 

  21. Steegman A.T., de la Fuente J.:Experimental cerebral embolism. II. Microembolism of the rabbit brain with seran polymer resin. J. Neuropathol. Exp. Neurol. 18: 537–538, 1959.

    Google Scholar 

  22. Taccola A., Gotti G.B., Baruffini A., Cipolli P.L.:Su un metodo di determinazione quantitativa dell'aggragabilità piastrinica spontanea. Rass. Med. Sper. 27: 795–804, 1980.

    Google Scholar 

  23. Widing O.:Cerebral microembolization following carotid injection of dextran microspheres in rabbits. Neuroradiology 21: 123–126, 1981.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Bo, P., Cosi, V., Introzzi, G. et al. Quantified EEG, somatosensory evoked potentials and cerebral blood flow in monitoring experimental brain ischemia. Ital J Neuro Sci 8, 549–559 (1987). https://doi.org/10.1007/BF02333661

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02333661

Key-Words

Navigation