Molecular changes involved in the carcinogenesis of brain tumors.

Abstract:

:Current basic research on tumorigenesis suggests that the accumulation of multiple genetic defects underlies the progression of initiated cells toward malignancy. Molecular abnormalities associated with primary brain tumors include a wide variety of changes in tumor-suppressor genes, proto-oncogenes and growth factors. A well-known tumor-suppressor gene, p53 gene, is located on the short arm (p) of chromosome 17 and consists of 11 exons transcribed into a 2.2-2.5 kb messenger (m) RNA that encode for a 53 kDa protein. Its alterations are associated with carcinogenesis of astrocytic tumors. Recent evidence suggests also that the p53 protein may function through promoting the expression of the recently discovered gene, WAF1/Cipl. Loss of chromosome 10 was frequently observed in glioblastoma. Southern blot analysis of glioblastomas revealed that 72% have the chromosome 10 loss and that 38% had amplification of the epidermal growth factor receptor (EGFR) gene. Autocrine stimulation of cell growth requires the presence of both growth factors and their receptors. Other genetic alterations in gliomas include elevated expression of the c-myc, Ha-ras, and c-fos oncogenes with a trend to increase in higher malignant grades.

journal_name

Folia Neuropathol

journal_title

Folia neuropathologica

authors

Debiec-Rychter M,Liberski PP

subject

Has Abstract

pub_date

1994-01-01 00:00:00

pages

199-203

issue

4

eissn

1641-4640

issn

1509-572X

journal_volume

32

pub_type

杂志文章,评审
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    authors: Jaśkiewicz E,Michałowska-Wender G,Pyszczek A,Wender M

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    authors: Sobaniec-Lotowska M,Sobaniec W,Augustynowicz A

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  • Epithelioid schwannomas of the acoustic nerve.

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    authors: Kroh H,Matyja E,Marchel A

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  • Evaluation of survival and maturation of cryopreserved dopaminergic fetal cells transplanted into rat striatum and an analysis of the host brain reaction to graft.

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    authors: Kosno-Kruszewska E,Wierzba-Bobrowicz T,Ilnicki K,Lechowicz W,Dymecki J

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  • Size frequency distributions of abnormal protein deposits in Alzheimer's disease and variant Creutzfeldt-Jakob disease.

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    journal_title:Folia neuropathologica

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    更新日期:2007-01-01 00:00:00

  • Recurrent cerebral infarcts as the first manifestation of infection with the HIV virus.

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    authors: Gorczyca I,Stanek M,Podlasin B,Furmanek M,Pniewski J

    更新日期:2005-01-01 00:00:00

  • The interaction between lung cancer metastases to the brain and their surroundings.

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    authors: Tabaka J,Nowacki P,Pankowski J

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  • Amyloid and prions: some biochemical investigations of cerebral amyloidosis in mice.

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  • Phenotypic diversity resulting from a point mutation.

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    authors: Szumańska G,Gadamski R

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  • [Glioblastoma with BRAFV600E mutation and numerous metastatic foci: a case report].

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  • Sporadic inclusion body myositis: clinical, pathological, and genetic analysis of eight Polish patients.

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    abstract::Early reviews identified over 20 risk factors associated with Alzheimer's disease (AD) including age, familial inheritance, exposure to aluminium, traumatic brain injury (TBI), and associated co-morbidities such as vascular disease and infection. In the light of recent evidence, this review reconsiders these risk fact...

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    authors: Kroh H,Bidziński J,Majchrowski A

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  • Immuno-electron microscopic demonstration of GABA and glutamate synapses in Mongolian gerbils hippocampus after ischemia.

    abstract::The subcellular distribution of glutamate and GABA in synapses of Mongolian gerbils hippocampus was examined using post-embedding immunogold staining method for electron microscopy. Immunolabelling was performed with 10 nm gold-antibody complexes for glutamate and GABA. The gold particle densities gave reliable inform...

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  • Faulty position of cerebellar cortical neurons as a sequel of disturbed neuronal migration.

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  • Angiocentric glioma from a perspective of A-B-C classification of epilepsy associated tumors.

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  • Prenatal exposure of diclofenac sodium affects morphology but not axon number of the median nerve of rats.

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    doi:

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  • Pathophysiological basis of translational stroke research.

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  • Endothelin-like immunoreactivity in hippocampus following transient global cerebral ischemia. II. The blood-brain interphase.

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    doi:

    authors: Gajkowska B,Mossakowski MJ

    更新日期:1997-01-01 00:00:00

  • Rare C-6 vertebral involvement in a child with histiocytosis X: case report.

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  • Effects of hypothermia on ex vivo microglial production of pro- and anti-inflammatory cytokines and nitric oxide in hypoxic-ischemic brain-injured mice.

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