ArticleJournal of neuro-oncology2007
Human glioblastoma biopsy spheroids xenografted into the nude rat brain show growth inhibition after stereotactic radiosurgery.
Article in Journal of neuro-oncology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
5 citing papers in PubMed, 7 citations in OpenAlex.
- Gallbladder cholangiocyte organoids.Biology of the cell · 2025Review
- Spherical cancer models in tumor biology.Neoplasia (New York, N.Y.) · 2015Review
- Development of a three-dimensional in vitro model for longitudinal observation of cell behavior: monitoring by magnetic resonance imaging and optical imaging.Molecular imaging and biology · 2010Article
- Dietary bioflavonoids inhibit Escherichia coli ATP synthase in a differential manner.International journal of biological macromolecules · 2010Article
- The invasiveness of five medulloblastoma cell lines in collagen gels.Journal of neuro-oncology · 2010Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe Gamma Knife is currently used to boost treatment of malignant gliomas. However, few experimental studies have focused on its radiobiological effects. In this work, the growth and invasiveness of human glioblastoma spheroids xenografted into nude rat brains were assessed after radiosurgery. Temporary in vitro as well as long-term in vivo radiation effects were studied.
methodsGlioblastoma biopsy spheroids were irradiated with 12 or 24 Gy. Short-term in vitro spheroid viability and tumour cell migration was determined by microscopic techniques. Pre-irradiated glioblastoma spheroids were implanted into brains of immunosuppressed rats. Long-term tumour development was assessed by magnetic resonance (MR) imaging, and animal survival was recorded. An immunohistochemical analysis was performed on the sectioned rat brains.
resultsBoth un-irradiated and irradiated spheroids remained viable during 2 months in culture, but a dose-dependent inhibition of tumour growth and migration was seen. MR imaging 4 weeks after implantation also showed a dose-dependent inhibition in tumour development. Median animal survival times were 25.5 days (control group), 43 days (12 Gy group) and 96 days (24 Gy group). The study of in vivo long-term radiation effects on the remaining viable tumour population showed no difference in Ki-67 labelling index and microvascular density before and after radiosurgery.
conclusionsA dose-dependent inhibition of tumour growth and invasion, as well as a dose-dependent increase in animal survival was observed. The model system described is well suited for assessing the radiobiological effects of Gamma Knife radiosurgery. The results indicate that radiosurgery of malignant gliomas might be effective in controlling tumour progression in selected glioblastoma patients.
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Registered trials
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