Effect of Hyperosmotic Solutions on Human Brain Tumour Vasculature View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1998-11

AUTHORS

S. Sato, T. Kawase, S. Harada, H. Takayama, S. Suga

ABSTRACT

Summary Reversible opening of the blood-brain barrier (BBB) has been used to increase delivery of chemotherapeutic agents into brain tumours, but it is complicated and requires general anaesthesia. Without affecting the normal BBB, and avoiding the complications of BBB modification by hyperosmotic solution, we tried an adequate minimal BBB disruption in brain tumours. Although the effect of BBB disruption on normal brain has been described, there are no reports of the effect of an impaired BBB on microcirculation. In this study, four patients underwent surgical resection of a glioblastoma multiforme (GM; n=1), astrocytoma (n=2), or metastatic brain tumour (n=1). Epicerebral microcirculation was observed in the operative field. Serial fluorescein microangiograms of the tumour and peritumoural area were obtained before and after BBB disruption was introduced intra-operatively by retrograde infusion of mannitol introducing a catheter via the temporal superficial artery back to the carotid bifurcation. On the initial microangiogram, staining by the fluorescein dye was observed in the GM and metastatic tumour but not in the astrocytoma; no extravasation of fluorescein dye was observed in the peritumoural areas. After BBB disruption, fluorescein perfusion increased and extravasation of fluorescein dye from the venules was observed in the GM and the metastatic tumour and in the peritumoural area of both lesions; BBB disruption started from venules in the peritumoural area without affecting the normal brain. However, such effects were not observed in the astrocytomas after BBB disruption nor in normal brain tissue in any patient. It appears that the integrity of the BBB is less stable in the peritumoural area of GM and metastatic brain tumours than it is in astrocytomas or normal brain. Osmotic BBB disruption may offer a method for achieving global delivery of therapeutic agents to brain tumours and peritumoural areas. More... »

PAGES

1135-1142

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s007010050227

DOI

http://dx.doi.org/10.1007/s007010050227

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1030808922

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/9870058


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