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  • 1
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome IV ; POL3 (CDC2) ; KIN28 ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The nucleotide sequence of a 5 kb EcoRI-NcoI fragment of chromosome IV, contiguous to gene POL3 (CDC2), has been determined. It contains three open reading frames: QRI1, QRI2 and QRI7. Two of them are essential genes. QRI7 is homologous to the Escherichia coli orfx gene. Accession number to EMBL/Genbank Data Library is X79380.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1433-0350
    Keywords: Key words Medulloblastoma ; Primitive neuroectodermal tumour ; Germ cell tumour ; High-grade glioma ; Ependymoma ; Stem cell transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  New therapeutic strategies are required to improve the prognosis of malignant brain tumours in children, in terms of survival and quality of life. During the last 10 years, high-dose chemotherapy (HDCT) with autologous haematopoietic stem cell rescue has been studied in different types of paediatric brain tumours. The most frequently used combined regimens were busulfan-thiotepa and etoposide-thiotepa along with carboplatin or BCNU. High response rates have been reported in medulloblastoma and germ cell tumours, and HDCT has been further developed as salvage therapy or for consolidation in these diseases. Interesting objective tumour responses have been obtained in supratentorial high-grade glioma, but HDCT has not so far been effective either in ependymoma or in diffuse pontine brain stem tumours. This article reviews the rationale for HDCT in brain tumours and the current clinical results obtained in each tumour type. The place of HDCT in the therapeutic strategy for paediatric brain tumours, especially in young children, is discussed.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0942-0940
    Keywords: Infant ; brain tumours ; irradiation ; sequelae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Between 1975 and 1989, 98 children with brain tumours under the age of three at time of diagnosis were entered into a retrospective study. Twenty of them are alive and free of tumour more than five years after treatment and were evaluated in this study. Thirteen tumour localizations were infratentorial and 7 were supratentorial. A histological examination was performed in 15 patients: 5 ependymomas, 6 medulloblastomas and 4 astrocytomas were identified. Fifteen patients underwent surgical removal of tumour, all but one received radiotherapy and 8 were given chemotherapy. Only two children have not late effects. Analysis of long-term sequelae in survivors showed central endocrinopathies in 14 (70%), a neurological handicap in 13 (65%) and impaired cognitive functions in 17 (85%). Irradiation was clearly responsible for mental sequelae in 7 patients and endocrinopathies in 6 patients. The other possible causes are tumour injury, hydrocephalus or surgery. The risks incurred with radiotherapy and advances in infant brain tumour therapy are discussed.
    Type of Medium: Electronic Resource
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