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oligodendroglioma/tyrosine
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页 1 从 54 结果
Prognostic value of O-(2-[ 18 F]-fluoroethyl)-L-tyrosine PET in relapsing oligodendroglioma
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Purpose: To assess the relationship between F-18-fluoro-ethyl-tyrosine positron emission tomography (FET-PET) parameters of relapsing oligodendroglioma and progression-free survival.
Material and methods:
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
Prognostic Value of O-(2-[18F]Fluoroethyl)-L-Tyrosine PET/CT in Newly Diagnosed WHO 2016 Grade II and III Glioma.
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PURPOSE
The use of [18F]fluoroethyl)-L-tyrosine ([18F]FET) positron emission tomography/computed tomography (PET/CT) has proven valuable in brain tumor management. This study aimed to investigate the prognostic value of radiotracer uptake in newly diagnosedCarbon-11-labeled amino acids have been successfully used to image brain tumors by PET. This study was undertaken to evaluate the potential of L-3-[123I]-iodo-alpha-methyl tyrosine (123IMT) for metabolic imaging of brain tumors. Ten patients (glioblastoma, oligodendroglioma, lymphoma, and
Paraffin embedded tissue of 84 oligodendrogliomas (63 primary tumours, 21 recurrences), 21 glioblastomas with oligodendroglial growth pattern (15 primaries, 6 recurrences) and 17 mixed gliomas was investigated for the presence of mutations in exons 5-9 by means of single stranded conformation
Expression of receptor tyrosine kinases VEGFR-1 (FLT-1), VEGFR-2 (KDR), EGFR-1, PDGFRalpha and c-Met in canine primary brain tumours.
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Inhibition of tumour growth and angiogenesis by targeting key growth factor receptors is a promising therapeutic strategy for central nervous system tumours. Characterization of these growth factor receptors in canine primary brain tumours has not been done. Using quantitative real-time TaqMan
Evaluation of the expression of C-kit (CD117) in ependymomas and oligodendrogliomas.
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C-kit is a proto-oncogene located on the long arm of chromosome 4. Its product, CD117, is a specific immunohistochemical (IHQ) marker that is associated with response to a potent tyrosine kinase inhibitor therapy with STI-571 (Gleevec®) in chronic myelogenous leukemia and GISTs. In our study, we
Vascular endothelial growth factor (VEGF) is a hypoxia-inducible angiogenic factor, which is known to be upregulated in most cases of glioblastoma multiforme (GBM). The expression of VEGF and its receptors in ependymomas, oligodendrogliomas, and particularly the expression during anaplastic
Protein tyrosine kinases in human brain and gliomas.
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Tyrosine kinase activity was determined in neonatal and adult human brain, oligodendrogliomas, and astrocytomas. The astrocytomas were divided into low- (grade I and grade II) and high-grade (grade III and grade IV) tumors. We measured the tyrosine kinase activity in the cytosolic and membrane
First experience with I-123-alpha-methyl-tyrosine spect in the 3-D radiation treatment planning of brain gliomas.
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OBJECTIVE
This study compares the results of iodine-123-alpha-methyl-tyrosine single photon computed emission tomography (IMT-SPECT) with magnetic resonance imaging (MRI) in tumor volume definition of brain gliomas. Furthermore, it evaluates the influences of the information provided from IMT-SPECT
The occurrence of brain tumors is associated with broad suppression of the immune system function; however, the mechanisms involved in this impairment are not fully characterized. In this study, we have examined mechanisms involved in diminished T lymphocyte reactivity in patients with glioblastomas
EGFR tyrosine kinase domain mutations in human gliomas.
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Gefitinib is an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor effective in patients with lung cancer with mutations in exons 19 and 21 of the EGFR tyrosine kinase domain. In this study, the authors tested the presence of such mutations in 95 gliomas including glioblastomas,
[18F]-fluoro-ethyl-L-tyrosine PET: a valuable diagnostic tool in neuro-oncology, but not all that glitters is glioma.
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BACKGROUND
To assess the sensitivity and specificity of [(18)F]-fluoro-ethyl-l-tyrosine ((18)F-FET) PET in brain tumors and various non-neoplastic neurologic diseases.
METHODS
We retrospectively evaluated (18)F-FET PET scans from 393 patients grouped into 6 disease categories according to histology
ETV/Pea3 family transcription factor-encoding genes are overexpressed in CIC-mutant oligodendrogliomas.
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Oligodendrogliomas with combined loss of chromosome arms 1p and 19q are known to be particularly sensitive to chemotherapy, and the CIC gene located on 19q is known to be mutated in over 50% of the 1p/19q codeleted oligodendrogliomas. However, the role of CIC in the oligodendroglioma pathogenesis is
The prognosis of patients with glioblastoma, anaplastic astrocytoma, and anaplastic oligodendroglioma remains poor despite standard treatment with radiotherapy and temozolomide. Molecular targeted therapy holds the promise of providing new, more effective treatment options with minimal toxicity.
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