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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Acta neuropathologica 74 (1987), S. 243-247 
    ISSN: 1432-0533
    Schlagwort(e): Malignant meningioma ; Local recurrence ; Cell kinetics ; Bromodeoxyuridine ; Subarachnoid dissemination
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A meningotheliomatous meningioma occurred in the right parietal parasagittal region of a 43-year-old woman. A total excision was carried out. Three years and 9 months later, one parasagittal and two falx tumours in close proximity recurred and were excised. The falx tumors showed the features of an anaplastic transitional meningioma with increased mitoses. The falx meningioma recurred locally and repeatedly, despite radiation therapy and chemoimmunotherapy. She died 7 years and 8 months after the onset. At autopsy, the tumor was found to have metastasized via the cerebrospinal fluid to the spinal cord and pituitary stalk. Extracranial metastases were not evident. At the fourth craniotomy, bromodeoxyuridine (BrdU) was administered intravenously to label tumor cells in the S phase of the cell cycle. The BrdU-labeled cells accounted for 9.0%; they are usually less than 1% in benign meningiomas. Meningothelial meningiomas with a high labeling index recur rapidly, even after Simpson's grade 2 removal, and treatment for a malignant meningioma should be instituted.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 0942-0940
    Schlagwort(e): Adenosine ; ATP ; regional cerebral blood flow ; RG-C6 glioma ; intracarotid administration
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary We studied the effect of intravenous and intracarotid infusion of adenosine and adenosine triphosphate (ATP) on the regional blood flow of intracerebrally transplanted RG-C 6 tumours in rats, using the hydrogen clearance method. The intracarotid administration of adenosine or ATP selectively increased blood flow in the tumour, but did not produce any significant change either in the regional cerebral blood flow of the extratumoural ipsilateral hemisphere or in the ipsilateral hemisphere without tumour. The intracarotid administration of ATP at a dose of 10 Μg/kg/min produced the most effective increase in the tumour blood flow (+51.5± 16.8%). In contrast, both the intravenous administration of adenosine and that of ATP failed to increase tumour blood flow. These results may possibly indicate that intracarotid administration of the adenosine or ATP might contribute in selectively enhancing the delivery of anti-cancer agents to malignant brain tumours.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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