In:
Neurosurgery, Ovid Technologies (Wolters Kluwer Health), Vol. 26, No. 2 ( 1990-02-01), p. 248-254
Abstract:
The uptake of hematoporphyrin derivative (HpD) into human cerebral glioma was measured using a porphyrin extraction technique. Patients with cerebral glioma were injected with HpD at a dose of 5 mg/kg body weight 24 hours before surgery and photoradiation therapy (PRT). Biopsies of tumor, and where possible, adjacent brain and normal brain were taken for analysis of HpD uptake. HpD was selectively localized into all grades of glioma, and there was a direct correlation between the grade of glioma and HpD level in the tumor. The levels were highest in glioblastoma multiforme (mean uptake of 5.9 mg of HpD/g of tumor wet weight) and lower in the intermediate-grade anaplastic astrocytoma (mean uptake of 2.4 mg/g of tumor) and the low-grade astrocytoma (1.6 mg/g of tumor), Uptake into normal brain tissue taken from HpD-sensitized patients was 0.2 mg/g. HpD was also localized into the “brain adjacent to tumor” region. The selective uptake into the low-grade glioma suggests that PRT may be of use as an adjuvant therapy in these tumors and the detection of HpD in this region indicates that PRT may control the spread of tumor infiltrating into the adjacent normal brain.
Type of Medium:
Online Resource
ISSN:
0148-396X
,
1524-4040
DOI:
10.1227/00006123-199002000-00011
Language:
English
Publisher:
Ovid Technologies (Wolters Kluwer Health)
Publication Date:
1990
detail.hit.zdb_id:
1491894-8
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