Disparate volumetric fluid shifts across cerebral tissue compartments with two different anesthetics.

ABSTRACT:

Background

Large differences in glymphatic system transport-similar in magnitude to those of the sleep/wake cycle-have been observed during anesthesia with dexmedetomidine supplemented with low dose isoflurane (DEXM-I) in comparison to isoflurane (ISO). However, the biophysical and bioenergetic tissue status underlying glymphatic transport differences between anesthetics remains undefined. To further understand biophysical characteristics underlying these differences we investigated volume status across cerebral tissue compartments, water diffusivity, and T2* values in rats anesthetized with DEXM-I in comparison to ISO.

Methods

Using a crossover study design, a group of 12 Sprague Dawley female rats underwent repetitive magnetic resonance imaging (MRI) under ISO and DEXM-I.

SUBMITTER: Ozturk BO 

PROVIDER: S-EPMC7788828 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature