Abstract:
:Recent studies of genetic abnormalities in pediatric low-grade gliomas (LGGs) have focused on activation of the ERK/MAPK pathway by KIAA1549-BRAF gene fusions in the majority of pilocytic astrocytomas (PAs) and by rare mutations in elements of the pathway across histopathologically diverse LGGs. This study reports that MYB, an oncogene not previously implicated in gliomagenesis, is activated in a diverse subset of pediatric LGGs. The study cohort comprised 57 pediatric LGGs and a comparative cohort of 59 pediatric high-grade gliomas (HGGs). The LGG cohort included 34 PAs and 23 diffuse gliomas; fibrillary astrocytomas (n = 14), oligodendroglial tumors (n = 7), and angiocentric gliomas (n = 2). MYB copy number abnormalities were disclosed using Affymetrix 6.0 SNP arrays and confirmed using interphase fluorescence in situ hybridization. Novel MYB amplifications that upregulate MYB RNA and protein expression were demonstrated in 2/14 diffuse astrocytomas. In addition, focal deletion of the terminal region of MYB was seen in 1 of 2 angiocentric gliomas (AGs). Increased expression of MYB was demonstrated by quantitative RT-PCR and immunohistochemistry. MYB upregulation at the protein level was demonstrated in a proportion of diffuse LGGs (60%), pilocytic astrocytomas (41%), and HGGs (19%), but abnormalities at the genomic level were only a feature of diffuse gliomas. Our data suggest that MYB may have a role in a subset of pediatric gliomas, through a variety of mechanisms in addition to MYB amplification and deletion.
journal_name
Acta Neuropatholjournal_title
Acta neuropathologicaauthors
Tatevossian RG,Tang B,Dalton J,Forshew T,Lawson AR,Ma J,Neale G,Shurtleff SA,Bailey S,Gajjar A,Baker SJ,Sheer D,Ellison DWdoi
10.1007/s00401-010-0763-1subject
Has Abstractpub_date
2010-12-01 00:00:00pages
731-43issue
6eissn
0001-6322issn
1432-0533journal_volume
120pub_type
杂志文章abstract::Flurothyl-induced status epilepticus was studied by light and electron microscopy (LM, EM) to determine the time course and structural features of neuronal necrosis in the vulnerable brain regions in epilepsy. The cerebral cortex, hippocampus and thalamus were examined after closely spaced recovery periods of up to 1 ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687789
更新日期:1988-01-01 00:00:00
abstract::We described a new type of cytoplasmic inclusion in the choroidal epithelial cells of humans. The inclusions usually appeared as brown, round or elongated bodies with or without an inner core, ranging in size from 1.3 to 7.0 micron. Histochemically, they contained polysaccharides, proteins and compound lipids. Ultrast...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687675
更新日期:1988-01-01 00:00:00
abstract::A macrosomic male infant with multiple malformations survived for 4 days. His external dysplasias comprised macrocephalus, cheilopalatoschisis, auricular anomalies, and unilateral hexadactyl; his internal dysplasias included cysts of kidneys and pancreas, and a patent foramen ovale. The child had frequent generalized ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00690449
更新日期:1980-01-01 00:00:00
abstract::Neurotrophins regulate the proliferation and differentiation of neurons in the central nervous system via a family of specialized receptors, including TrkA, TrkB, and TrkC. As little is known about their expression or potential role in human glial tissues and glial tumors, we undertook an immunohistochemical analysis ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010050906
更新日期:1998-10-01 00:00:00
abstract::We have previously shown that in the hippocampal formation of patients with acquired immunodeficiency syndrome (AIDS) there is neuronal atrophy, without cell loss. Because reductions in neuronal size are suggestive of associated neuritic alterations, we decided to study the dendritic trees of the main neuronal populat...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-003-0781-3
更新日期:2004-02-01 00:00:00
abstract::Massive GGGGCC repeat expansion in the first intron of the gene C9orf72 is the most common known cause of familial frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS). Despite its intronic localization and lack of an ATG start codon, the repeat region is translated in all three reading fra...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-013-1189-3
更新日期:2013-12-01 00:00:00
abstract::A case history illustrating the potential clinical significance of subependymoma is presented. Fine structural studies indicate that the tumor is composed of cells having the cytoplasmic features of ependyma, astrocytes, and transitional cells. Its composition and structure are alike those in the adult mammalian subep...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00691968
更新日期:1977-11-28 00:00:00
abstract::In spite of several cases reported in the literature, the exact pathogenetic mechanism of neuropathic changes in porphyric neuropathy remains uncertain. Various authors have ascribed the neuropathologic findings to either a dying-back axonal degeneration or segmental demyelination. In recent years, the hypothesis of a...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00697191
更新日期:1984-01-01 00:00:00
abstract::Tumours of the neuroglia, 172 in all (50 glioblastomas, 65 fibrillar and gemistocytic astrocytomas, 26 pilocytic astrocytomas and 31 oligodendrogliomas), were studied by automated microscopic picture analysis. Thirteen morphometric and densitometric parameters of the tumour cell nuclei as well as two mitotic parameter...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00692692
更新日期:1982-01-01 00:00:00
abstract::Two cases of Central neurocytoma arising in the lateral ventricles are presented. Both patients had well-circumscribed masses in the right lateral ventricle causing hydrocephalus. The tumors were composed of small round cells forming Homer Wright rosettes against a fine fibrillary background. In one patient surgical r...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687981
更新日期:1986-01-01 00:00:00
abstract::Although clinical and electrophysiological evidence indicates that the amygdaloid body plays an important role in the pathogenesis of temporal lobe epilepsy, there are very few detailed data on histopathological changes in this nucleus in epilepsy patients. In the present study we have examined the lateral nucleus of ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010050658
更新日期:1997-06-01 00:00:00
abstract::Nodding syndrome is an epidemic neurologic disorder of unknown cause that affects children in the subsistence-farming communities of East Africa. We report the neuropathologic findings in five fatal cases (13-18 years of age at death) of nodding syndrome from the Acholi people in northern Uganda. Neuropathologic exami...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-018-1909-9
更新日期:2018-11-01 00:00:00
abstract::Histological, ultrastructural and morphometrical observations on Clarke's column were carried out in 18 patients with sporadic amyotrophic lateral sclerosis (ALS) and 15 age-matched control subjects. Of the 18 ALS patients 6 had been on a respirator before death. Bunina bodies were found in the neuronal cytoplasm in 7...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00304464
更新日期:1992-01-01 00:00:00
abstract::In search of novel genes associated with glioma pathogenesis, we have previously shown frequent deletions of the KIAA1797/FOCAD gene in malignant gliomas, and a tumor suppressor function of the encoded focadhesin impacting proliferation and migration of glioma cells in vitro and in vivo. Here, we examined an associati...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-019-02067-z
更新日期:2020-01-01 00:00:00
abstract::The finding of novel fibroblastic onion bulb-like structures in peripheral nerves is reported for the first time in avian riboflavin deficiency. Day old broiler meat chickens were fed a riboflavin deficient diet (1.8 mg/kg) and were killed on postnatal days 6, 11, 16, 21 and 31, whereas control chickens were fed a con...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-007-0215-8
更新日期:2007-08-01 00:00:00
abstract::Amyloid-beta (Abeta) deposition in cerebral blood vessel walls is one of the key features of Alzheimer's disease (AD). Abeta(1-40) carrying the "Dutch" mutation (DAbeta(1-40)) induces rapid degeneration of cultured human brain pericytes (HBP). To study the mechanisms of this Abeta-induced toxicity, a comparative cDNA ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-002-0585-x
更新日期:2002-11-01 00:00:00
abstract::The distribution of the calcium-binding protein calretinin was investigated by immunohistochemistry in the hippocampus, the subicular areas, and the entorhinal cortex in patients with Alzheimer's disease and in control subjects. By double immunolabelling, the calretinin immunoreactivity was compared to the immunoreact...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00294357
更新日期:1994-01-01 00:00:00
abstract::PICALM, a clathrin adaptor protein, plays important roles in clathrin-mediated endocytosis in all cell types. Recently, genome-wide association studies identified single nucleotide polymorphisms in PICALM gene as genetic risk factors for late-onset Alzheimer disease (LOAD). We analysed by western blotting with several...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-013-1111-z
更新日期:2013-06-01 00:00:00
abstract::The effect of induced hypertension instituted after a 2-h delay following middle cerebral artery occlusion (MCAO) on brain edema formation and histochemical injury was studied. Under isoflurane anesthesia, the MCA of 14 spontaneously hypertensive rats was occluded. In the control group (n = 7), the mean arterial press...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00305878
更新日期:1991-01-01 00:00:00
abstract::This study tests the effects of chronic electrostimulation on denervated/reinnervated skeletal muscle in producing an optimal restoration of size and mechanical and histochemical properties. We compared tibialis anterior muscles in four groups of rats: in unoperated control (C) and 10 weeks following nerve lesion with...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-006-0035-2
更新日期:2006-06-01 00:00:00
abstract::The endothelial cells of three cases of cerebellar capillary hemangioblastoma were studied by means of electron microscopy. Crystalloid bodies, not previously described in the vessels of the central nervous system (CNS), were found in 5%-10% of the endothelial cells, more often in the capillaries with small irregular ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00688686
更新日期:1985-01-01 00:00:00
abstract::Sera from guinea pigs with acute or chronic relapsing experimental allergic encephalomyelitis (EAE) were injected into lumbosacral subarachnoid space of normal recipient rats. Seventeen of 37 sera induced demyelination in the CNS, and 27 of 37 sera caused demyelinated peripheral nerve fibers in the roots. The highest ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00690994
更新日期:1981-01-01 00:00:00
abstract::HTLV-III-like particles were observed within a cell process surrounded by a myelin sheath, in the brain of a 4-year-old boy with AIDS encephalopathy. Similar particles were also observed in the mononuclear macrophage-like cells. ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00686627
更新日期:1987-01-01 00:00:00
abstract::Recent evidence suggests that brain-derived neurotrophic factor (BDNF) and its tyrosine kinase B (TrkB) receptor, in addition to promoting neuronal survival and differentiation, modulates synaptic transmission by increasing N-methyl-D-aspartic acid receptor (NMDAR) activity. Overexpression of BDNF may, then, interfere...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010000296
更新日期:2001-04-01 00:00:00
abstract::Amyotrophic lateral sclerosis (ALS) is a lethal disease characterized by motor neuron degeneration and associated with aggregation of nuclear RNA-binding proteins (RBPs), including FUS. How FUS aggregation and neurodegeneration are prevented in healthy motor neurons remain critically unanswered questions. Here, we use...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-019-01998-x
更新日期:2019-07-01 00:00:00
abstract::Experimental allergic neuritis was induced in Lewis rats by inoculation with autoreactive T cell lines sensitized to residue 57-81 of P2 myelin protein. Control rats received cells derived from immunization to complete Freund's adjuvant alone. Endoneurial fluid pressure (EFP) was measured in both sciatic nerves at 0, ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00296547
更新日期:1991-01-01 00:00:00
abstract::The mechanism of antibody-mediated central nervous system (CNS) demyelination in vivo was studied using rabbit eyes. Injection of anti-galactocerebroside (Gal C) antiserum alone into the normal rabbit vitreous body induced demyelination in the epiretinal myelinated fibers. This activity of the antiserum disappeared af...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687890
更新日期:1989-01-01 00:00:00
abstract::Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by the aggregation of ubiquitinated proteins in affected motor neurons. Recent studies have identified several new molecular constituents of ALS-linked cellular aggregates, including FUS, TDP-43, OPTN, UBQLN2 and the translational product...
journal_title:Acta neuropathologica
pub_type: 杂志文章,评审
doi:10.1007/s00401-013-1125-6
更新日期:2013-06-01 00:00:00
abstract::Abuse of the club drugs Methamphetamine (Meth) and Ecstasy (MDMA) is an international problem. The seriousness of this problem is the result of what appears to be programmed cell death (PCD) occurring within the brain following their use. This follow up study focused on determining which cell types, neurons and/or gli...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-007-0259-9
更新日期:2007-09-01 00:00:00
abstract::Alzheimer's disease (AD) is a major cause of dementia. Characteristic neuropathological features of AD include neurofibrillary tangles, senile plaques, amyloid angiopathy and microvascular atrophy. The ultra-structure of the microvascular atrophy in AD and its pathogenetic significance have not been defined. This repo...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010050386
更新日期:1996-01-01 00:00:00