Abstract
Direct pO2 measurements were made at the surface of arterioles, capillaries, and venules of rabbit brain cortex. The results indicate that a considerable amount of oxygen diffuses through the arteriolar and precapillary wall. Therefore, the arterial blood that reaches the capillaries already has low pO2 (43±3 mm Hg and about 75%–70% of the blood oxygen capacity).
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bartels H., Harms H. Sauerstoffdissoziationskurven des Blutes von Säugetieren. Pflügers Arch.,268, 334–365 (1959)
Davies P.W., Bronk D.W. Oxygen tension in mammalian brain. Fed.Proc.16, 3, 669–678 (1957)
Duling B.R., Berne R.M. Longitudinal gradients in periarteriolar oxygen tension. Circ.Res.,27, 5, 669–678 (1970)
Duling B.R., Berne R.M. and Wahl M. Measurements of the perivascular pO2 in the vicinity of pial vessels of the cat. Pflügers Arch.,383, 29–34 (1979)
Grunewald W.A., Lübbers D.W. Kryomicrophotometry as a method for analysing the intracapillary HbO2 saturation of organs under different O2 supply conditions. Adv.Exp.Med.Biol.75, 55–64 (1976)
McCusky R.S., Meineke H.D. and Townsend S.F. Studies of the hemopoetic microenvironment 1. Changes in the microvasculature system and stroma during erythropoietic regeneration and suppression in the spleens of CFJ mice. Blood,39, 697–712 (1965)
Metzger H. Qualities of the microcirculatory transport system of the rat brain cortex analysed by means of oxygen microelectrode measurements and theoretical calculations of the pO2 field. In: 2nd World Congress for microcirculation. Microvasc.Res.,17, 3, S1–S183 (1979)
Samoilov M.O. A method of morphological identification of individual neurons in the brain in vivo and after fixation. Microscopic Acta,79, 4, 348–352 (1977)
Samoilov M.O., Semionov D.G. Intravital microscopic study of the cerebral cortex. In: Intravital microscopy of the neurons. Leningrad, Nauka, 1978, p. 58–72 (in Russian)
Stosseck K. Hydrogen exchange through the pial vessel wall and its meaning for the determination of the local cerebral blood flow. Pflügers Arch.320, 111–119 (1970)
Whalen W.J., Riley J. and Nair P. A microelectrode for measuring intracellular pO2. J.Appl.Physiol.23, 5, 798–801 (1967)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ivanov, K.P., Derry, A.N., Vovenko, E.P. et al. Direct measurements of oxygen tension at the surface of arterioles, capillaries and venules of the cerebral cortex. Pflugers Arch. 393, 118–120 (1982). https://doi.org/10.1007/BF00582403
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00582403