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- W2067077590 abstract "An inexpensive method is described which permits simultaneous quantification of the cerebrovascular extraction (E) of diffusion-limited compounds and cerebral blood flow (CBF) in rats. This method involves the use of two radioisotopic tracers: (a) a diffusion-limited, test tracer such as [3H]water; and (b) a reference tracer. The reference tracer is also used in the measurement of CBF. In the development and validation of this technique, results using two different types of reference tracers were compared. The reference tracers empoyed were: (a) [14C]butanol, a flow-limited (i.e. freely diffusible) compound; and (b) [141Ce]microspheres which embolize in the cerebromicrocirculation. Inclusion of [3H]water in the injection bolus permitted simultaneous measurement of Ew using both butanol and microspheres as the reference as well as concomitant measurement of CBF. Both tracers provided estimates of these values which behaved physiologically with respect to increasing arterial CO2 content (paCO2). In addition, the simultaneous measurement of Ew and CBF permitted calculation of the effective permeability of water across the blood-brain barrier (PwS) which was discovered to increased with increasing paCO2." @default.
- W2067077590 created "2016-06-24" @default.
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- W2067077590 date "1982-10-01" @default.
- W2067077590 modified "2023-09-23" @default.
- W2067077590 title "A dual label radiotracer technique for the simultaneous measurement of cerebral blood flow and the single-transit cerebral extraction of diffusion-limited compounds in rats" @default.
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- W2067077590 doi "https://doi.org/10.1016/0006-8993(82)90165-2" @default.
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