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  • Title: Effect of dimethyl sulfoxide on blood-to-brain transfer of alpha-aminoisobutyric acid: examination of regional blood-brain barrier function.
    Author: Ziylan YZ, Korkmaz G, Bernard G, Lefauconnier JM.
    Journal: Neurosci Lett; 1988 Jun 17; 89(1):74-9. PubMed ID: 2456498.
    Abstract:
    The effect of dimethyl sulfoxide (DMSO) on brain capillary permeability has been controversial. We have studied the effect of DMSO on unidirectional transport of alpha-aminoisobutyric acid (AIB) across the blood-brain barrier (BBB) in rats. Rats were treated with 15% DMSO intraperitoneally (i.p.), intravenously (i.v.) or by an i.p. injection in combination with an i.v. injection, or in some cases intra-arterially by rapid infusion into left external carotid artery. The unidirectional blood-to-brain transfer constant (Ki) for AIB was measured in each group after the animals were killed. DMSO administration did not significantly increase Ki as compared to control Kj. These results show that it is unlikely that DMSO increases the permeability of BBB and therefore do not support the proposal that DMSO can act as a carrier at the BBB for compounds with restricted vascular permeability.
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