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- W2057981908 abstract "Changes of the internal (d) and external diameter (D) of cerebral arteries in response to the various levels of arterial pCO2 were studied in anesthetized rats, of which brains were frozen in situ with isopentane cooled in liquid nitrogen. The parietal cortex was fixed with osmium tetroxide and stained with toluidine blue for morphometry of the cerebral arteries. In comparison with control animals (pCO2 = 41.2mm Hg), the d/D ratio in animals with hypercapnia (pCO2 = 69.9mm Hg) was increased by 11.7% in the pial arteries and 7.9% in the cortical arteries, indicating vasodilatation. In contrast, the d/D ratio in those with hypocapnia (pCO2 = 27.7mm Hg) was decreased by 6.2% and 13.0%, respectively, indicating vasoconstriction. There was a significant linear correlation existing between the d/D ratio of either pial or cortical arteries and pCO2. It is concluded that the cortical arteries respond to changes of arterial pCO2 in a similar manner to the pial arteries." @default.
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- W2057981908 date "1980-05-01" @default.
- W2057981908 modified "2023-09-27" @default.
- W2057981908 title "Response of cortical and pial arteries to changes of arterial CO2 tension in rats — a morphometric study" @default.
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- W2057981908 doi "https://doi.org/10.1016/0006-8993(80)90011-6" @default.
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