Abstract
For study of the local responses of pial vessels to transmural electrical stimulation, pial arteries and veins of 62 cats were examined (vessel diameter 80–250 μm). The animals were anaesthetized (Pentobarbital 25 mg/kg body weight) with spontaneous respiration. The acid-base status was determined from arterial blood and kept in a physiologic range by assisted respiration as needed. Mean arterial blood pressure remained constant during the experimentation. After opening of the skull (9), an area of 2·3 cm of the dura mater was carefully removed. The pial vessels were observed using a 40-fold magnification by means of an operating microscope equipped for photographic documentation. The diameters of the vessels were calculated from the photographs and their changes expressed in percent of the initial diameter (I.D.). Dilatations of the vessels’ were indicated by plus (+), constrictions by minus (-).
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References
AMES, A., SAKANONE, M., ENDO, S.: Na, K, Ca, Mg and Cl concentrations in choroid plexus fluid and cisternal fluid compared with plasma ultrafiltrate. J. Neurophysiol. 27, 672–681 (1964).
BETZ, E., ENZENROSS, H.G., VLAHOV, V.: Interactions of ionic mechanisms in the regulation of the resistance of pial vessels. In: Cerebral Circulation and Metabolism. Stroke 3, 328 (1973).
BETZ, E., BRANDT, H.: Regulation of the diameters of pial arteries in cats. Drug Res. 25, 1666–1679 (1975).
BETZ, E., BRANDT, H., CSORNAI, M.: Ionic control of pial arterial resistance. In: Blood Flow and Metabolism in the Brain. Harper, M., Jennett, B., Miller, D., Rowan, J. (Eds.) Edinburgh-London-New York: Churchill Livingstone 1975, pp. 9.12–9.14.
BRANDT, H., ENZENROSS, H.G., BETZ, E.: Pial vessels of the cat under conditions of local electrical stimulation. Pflügers Arch. 335, Suppl. R 31 (1975).
BRANDT, H., ENZENROSS, H.G.: The observation of pial arteries — a step to quantify the regulation of the vessels. Drug Res. 25, 987 (1975).
BRANDT, H., NITSCHKE, P.: Differences in the reactions of pial arteries and veins. In: The Cerebral Vessel Wall. Cervos-Navarro, J., Matakas, F., Betz, E., Wüllenweber, R. (Eds.) New York: Raven Press 1976, pp. 103–106.
DELGADO, J.M.R.: Electrodes for extracellular recording and stimulation. In: Physical Techniques in Biological Research. Vol. V. Electro-physical Methods, Part A. Nastuk, W.L. (Ed.) New York: Academic Press 1964, p. 93.
FORBES, H.S.: Cerebral circulation. I. Observation and measurement of pial vessels. Arch. Neurol. Psychiat. (Chic.) 41, 260–268 (1939).
VLAHOV, V., ENZENROSS, H.G., BRANDT, H., BETZ, E.: The effects of K+ on the contraction of pial arteries. Pflügers Arch. 343, Suppl. R 24 (1973).
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Brandt, H., Enzenross, H.G. (1976). Spontaneous Actions of Small Pial Vessels and the Response to Transmural Electrical Stimulation. In: Betz, E. (eds) Ionic Actions on Vascular Smooth Muscle. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-66427-4_14
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DOI: https://doi.org/10.1007/978-3-642-66427-4_14
Publisher Name: Springer, Berlin, Heidelberg
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