oligodendroglioma/phosphatase

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Protein Phosphatase Magnesium-Dependent 1δ (PPM1D) Expression as a Prognostic Marker in Adult Supratentorial Diffuse Astrocytic and Oligodenroglial Tumors.

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BACKGROUND Protein phosphatase magnesium-dependent 1δ (PPM1D) is a p53-induced serine/threonine phosphatase, which is overexpressed in various human cancers. A recent study reported that a mutation in the PPM1D gene is associated with poor prognosis in brainstem gliomas. In this study, we evaluated

Soluble protein tyrosine phosphatase receptor type Z (PTPRZ) in cerebrospinal fluid is a potential diagnostic marker for glioma

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Background: High-grade glioma is the most pervasive and lethal of all brain malignancies. Despite advances in imaging technologies, discriminating between gliomas and other brain diseases such as multiple sclerosis (MS) often requires

A morphologic study of the vasculature of malignant gliomas using thick celloidin sections and alkaline phosphatase stain.

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The combination of 100 microm thick celloidin sections and alkaline phosphatase (AP) enzyme histochemistry of the vascular endothelium offers a greatly enhanced, 3D morphologic perspective and reveals intricate details of the vasculature of brain. A study of tumor specimens obtained at craniotomy

Reduced expression of the Aalpha subunit of protein phosphatase 2A in human gliomas in the absence of mutations in the Aalpha and Abeta subunit genes.

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Protein phosphatase 2A (PP2A) consists of 3 subunits: the catalytic subunit, C, and the regulatory subunits, A and B. The A and C subunits both exist as 2 isoforms (alpha and beta) and the B subunit as multiple forms subdivided into 3 families, B, B' and B". It has been reported that the genes

Bony metastases of anaplastic oligodendroglioma respond to temozolomide.

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BACKGROUND Fewer than 30 cases of oligodendroglioma or anaplastic oligodendroglioma metastatic to bone are reported in the literature. Prolonged survival even with therapy is uncommon. METHODS We report a case of anaplastic oligodendroglioma metastatic to bone with a dramatic and durable response to

Bone marrow infiltration by a parietal lobe grade III oligodendroglioma.

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We report a patient with oligodendroglioma metastases 1 year after tumour debulking and postoperative radiotherapy to the parietal lobe primary. This treatment controlled the patient's tumour locally. Distant recurrence was manifest by back pain, weight loss and malaise. The serum alkaline

Immunocytochemical mapping of the phosphatase and tensin homolog (PTEN/MMAC1) tumor suppressor protein in human gliomas.

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PTEN/MMAC1 (phosphatase and tensin homolog/mutated in multiple advanced cancers 1) is a tumor suppressor gene, the inactivation of which is an important step in the progression of gliomas to end-stage glioblastoma multiforme. We examined the distribution of PTEN protein in 49 primary human gliomas

Ceramide regulation of the tumor suppressor phosphatase PTEN in rafts isolated from neurotumor cell lines.

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The neutral sphingolipid ceramide has been implicated in the apoptotic death of cells by a number of different mechanisms, including activation of protein kinase B (Akt) phosphatase. Here we present evidence that ceramide recruits the tumor suppressor PTEN (phosphatase and tensin homolog deleted

The Pluripotent Stem-Cell Marker Alkaline Phosphatase is Highly Expressed in Refractory Glioblastoma with DNA Hypomethylation.

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Hypomethylation of genomic DNA induces stem-cell properties in cancer cells and contributes to the treatment resistance of various malignancies. To examine the correlation between the methylation status of stem-cell-related genes and the treatment outcomes in patients with glioblastoma (GBM). The

Chromosome 19q deletions in human gliomas overlap telomeric to D19S219 and may target a 425 kb region centromeric to D19S112.

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Chromosome 19q harbors a tumor suppressor gene that is involved in astrocytoma, oligodendroglioma and mixed glioma tumorigenesis. We had previously mapped this gene to an approximately 5 megabase region of chromosome 19q13.2-13.3 between APOC2 and HRC. To narrow the location of this tumor suppressor

[Classification and grading of gliomas and meningiomas].

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GLIOMAS: As we demonstrated for supratentorial, diffuse gliomas in adults, a stratification into just two grades of malignancy, 'low' and 'high grade,' proved reliable and prognostically relevant. The discriminating histomorphological criterion for high-grade astrocytoma (WHO glioblastoma) as well

Unexpected immunoreactivities of intermediate filament antibodies in human brain and brain tumors.

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Immunoreactivities of 35 different monoclonal antibodies (MAbs) that detect intermediate filaments were studied systematically on serial cryostat sections of 14 well-defined human gliomas (five astrocytomas, three oligodendrogliomas, six glioblastomas) and on normal brain. Glial fibrillary acidic

Expression of the B-chain of platelet-derived growth factor and proliferative activity of human brain tumors.

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The expression of the B-chain of platelet-derived growth factor (PDGF) was analyzed in 29 human brain tumors (4 astrocytomas, 7 glioblastomas, 3 medulloblastomas, 3 oligodendrogliomas, 7 meningiomas, and others) using monoclonal antibody after digestion with alkaline phosphatase, and compared with

Calcineurin as a neuronal marker of human brain tumors.

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Calcineurin is one of the calmodulin binding proteins and a Ca2+-dependent and calmodulin-stimulated phosphoprotein phosphatase. We used antisera to the calcineurin as a cell-type-specific marker in order to identify neuronal cells in the rat brain and human neoplasms. In normal rat brain slices,

[On the classification of experimental brain tumours (author's transl)].

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The classification of experimental brain tumours is essential for mutual understanding and for comparison with human CNS tumours. The histogenetic principle of human neurooncology should be applied to the classification of experimental tumours, too. In rats different quantities of experimental

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