Summary
The cerebral energy metabolism and brain oedema were investigated in three experimental cerebral ischaemia models using 31P-NMR spectroscopy (MRS) and 1H-NMR imaging (MRI) in the same subject animal. These measurements were performed also in experimental brain oedema models and the findings were compared with each other. 31P-MRS showed an ischaemic pattern in all of the cerebral ischaemia models, that is, ATP and PCr peaks decreased, and the Pi peak increased and shifted to a higher resonant frequency. However, 31P-MRS did not show any remarkable change in the brain oedema models. On the other hand, 1H-MRI clearly demonstrated brain oedema in the brain oedema model. In the cerebral ischaemia models, 1H-MRI findings differed depending upon the type of model, namely the most marked brain oedema was detected in the unilateral middle cerebral arterial occlusion model and no marked change was detected in the temporary four vessel occlusion model. It was thought that this difference depended on the severity of the ischaemic insult. Accordingly, the fundamental pathophysiological problem of cerebral ischaemia was the energy metabolism disturbance with the brain oedema being associated with this disturbance but occuring secondarily. However, in the brain oedema model the main pathological change was the increase in tissue water.
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References
Ackerman JJH, Grove TH, Wong GG et al (1980) Mapping of metabolites in whole animals by 31P-NMR using surface coils. Nature 283: 167–170
Higuchi T, Naruse S, Horikawa Y et al (1986) Energy metabolism variation in experimental cerebral ischaemia in mongolian gerbils examined by using in vivo 31P-NMR. Jpn J Stroke 8: 433–439 (in Jap. with Eng. abstr)
Horikawa Y, Naruse S, Hirakwa Y et al (1985) In vivo studies of energy metabolism in experimental cerebral ischaemia using topical magnetic resonance. Changes in 31P-nuclear magnetic resonance spectra compared with electroencephalograms and regional cerebral blood flow. J Cereb Blood Flow Metabol 5: 235–240
Naruse S, Higuchi T, Horikawa Y et al (1986) Radiofrequency hyperthermia with successive monitoring of its effects on tumours using NMR spectroscopy. Proc Natl Acad Sci USA 83: 8343–8347
Naruse S, Hirakawa K (1986) Brain oedema studied by magnetic resonance. Seminars in Neurology 6: 53–63
Naruse S, Hirakawa K, Horikawa Y et al (1985) Measurements of in vivo 31P-nuclear magnetic resonance spectra in neuroectodermal tumours for the evaluation of the effects of chemotherapy. Cancer Res 45: 2429–2433
Naruse S, Horikawa Y, Tanaka C et al (1982) Proton nuclear magnetic resonance studies on brain oedema. J Neurosurg 56: 747–752
Naruse S, Horikawa Y, Tanaka C et al (1984) In vivo measurement of energy metabolism and the concomitant monitoring of electroencephalogram in experimental cerebral ischaemia. Brain Res 296: 370–372
Naruse S, Horikawa Y, Tanaka C et al (1984) Measurements of in vivo energy metabolism in experimental cerebral ischaemia using 31P-NMR for the evaluation of protective effects of perfluorochemicals and glycerol. Neurol Res 6: 169–175
Naruse S, Horikawa Y, Tanaka C et al (1985) Observations of energy metabolism in neuroectodermal tumours using in vivo 31P-NMR. Magnetic Resonance Imaging 3: 117–123
Naruse S, Horikawa Y, Tanaka C et al (1986) Significance of proton relaxation time measurement in brain oedema, cerebral infarction and brain tumours. Magnetic Resonance Imaging 4: 293–304
Naruse S, Horikawa Y, Tanaka C et al (1986) Evaluation of the effects of photoradiation therapy on brain tumours with in vivo P-31 MR spectroscopy. Radiology 160: 827–830
Naruse S, Takada S, Koizuka I et al (1983) In vivo 31P NMR studies on experimental cerebral infarction. Jpn J Physiol 33: 19–28
Pulsinelli WA, Brierly JB (1978) A new model of bilateral hemispheric ischaemia in the unanesthetized rat. Stroke 10: 262–272
Take Y, Yamazaki N, Fukuda N et al (1984) Physiological and biochemical study of temporary cerebral ischaemic rats produced by bilateral vertebral and carotid artery occlusion. Folia Pharamcol Japon 84: 471–483 (in Jap. with Eng. abstr)
Tamura A, Graham DI, McCulloch J et al (1981) Focal cerebral ischaemia in the rat: 1. Description of technique and early neuropathological consequences following middle cerebral artery occlusion. J Cereb Blood Flow Metabol 1: 53–60
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© 1988 Springer-Verlag
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Higuchi, T. et al. (1988). Pathophysiological Investigation of Experimental Cerebral Ischaemia Using in vivo 31P-NMR Spectroscopy and 1H-MRI. In: Isamat, F., Jefferson, A., Loew, F., Symon, L. (eds) Proceedings of the 8th European Congress of Neurosurgery, Barcelona, September 6–11, 1987. Acta Neurochirurgica, vol 43. Springer, Vienna. https://doi.org/10.1007/978-3-7091-8978-8_37
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DOI: https://doi.org/10.1007/978-3-7091-8978-8_37
Publisher Name: Springer, Vienna
Print ISBN: 978-3-7091-8980-1
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