Abstract:
:Large cell/anaplastic (LC/A) medulloblastoma (MB) is a recently recognized variant of medulloblastoma known to be associated with an advanced stage and a poor prognosis. Although Eberhart et al. suggested histopathologic grading of medulloblastoma in 2002, no consensus has been reached in terms of determining the criteria of an LC/A variant, and its biological behavior continues to be the subject of debate. We retrospectively analyzed 74 cases (range 0.25-15 years) of MB clinicopathologically using the criteria established by Eberhart et al. The LC/A variant was identified in 16 cases (22% of MB cases), five of which showed a poor outcome. Most LC/A variant cases revealed synaptophysin immunoexpression (75%), but no epidermal growth factor receptor (EGFR) expression. Expression of synaptophysin, NeuN, GFAP, p53, c-erbB2, and EGFR did not differ in LC/A and non-LC/A variants. Seven of the 74 cases of medulloblastoma showed erbB2 amplification by FISH, four of which were LC/A variants. N-myc amplification was observed in only one LC/A variant, but no c-myc amplification was found. In patients younger than 10 years, the LC/A variant showed a significantly poorer outcome than the non-LC/A variant (P = 0.02), while no difference was found in older patients. Multivariate analysis revealed only metastasis on MRI and p53 expression, but not anaplasia as unfavorable prognostic factors. Our study suggests that prognostic implications of anaplasia in medulloblastoma are uncertain, and that the reproducibility of the histopathologic criteria of the LC/A variant should be reassessed before they can be applied in practical use.
journal_name
Acta Neuropatholjournal_title
Acta neuropathologicaauthors
Min HS,Lee YJ,Park K,Cho BK,Park SHdoi
10.1007/s00401-006-0073-9subject
Has Abstractpub_date
2006-07-01 00:00:00pages
13-20issue
1eissn
0001-6322issn
1432-0533journal_volume
112pub_type
杂志文章abstract::The spinal cord of 20 patients with amyotrophic lateral sclerosis (ALS) and 5 patients with lower motor neuron disease (LMND) were investigated immunohistochemically using anti-human excitatory amino acid transporter 1 (EAAT1) and EAAT2 antibodies which are the astrocytic transporters. The purpose of the study was to ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004019900159
更新日期:2000-08-01 00:00:00
abstract::The spatial patterns of diffuse, primitive, classic (cored) and compact (burnt-out) subtypes of beta/A4 deposits were studied in coronal sections of the frontal lobe and hippocampus, including the adjacent gyri, in nine cases of Alzheimer's disease (AD). If the more mature deposits were derived from the diffuse deposi...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00454896
更新日期:1993-01-01 00:00:00
abstract::A newly developed in vitro labeling method with bromodeoxyuridine (BrdU) identifies S phase cells in situ in freshly obtained surgical tissue of human brain tumors which is subsequently fixed and embedded in paraffin for BrdU immunovisualization. For the first time, the BrdU labeling index (LI) is successfully compare...
journal_title:Acta neuropathologica
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doi:10.1007/BF00687579
更新日期:1989-01-01 00:00:00
abstract::Impaired axonal transport of the fast or slow component has been reported in patients with sporadic amyotrophic lateral sclerosis (ALS), animal models for ALS, and familial ALS-linked mutant Cu/Zn superoxide dismutase (SOD1) transgenic mice. However, little is known about the impairment of axonal transport in mutant S...
journal_title:Acta neuropathologica
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doi:10.1007/s00401-005-1021-9
更新日期:2005-07-01 00:00:00
abstract::Olfactory dysfunction is a frequent and early feature of patients with neurodegenerative disorders such as Alzheimer's disease (AD) and Parkinson's disease (PD) and is very uncommon in patients with frontotemporal dementia (FTD). Mechanisms underlying this clinical manifestation are poorly understood but the premature...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-011-0830-2
更新日期:2011-07-01 00:00:00
abstract::Silver-staining methods are helpful for histological identification of pathological deposits. In spite of some ambiguities regarding their mechanism and interpretation, they are widely used for histopathological diagnosis. In this review, four major silver-staining methods, modified Bielschowsky, Bodian, Gallyas (GAL)...
journal_title:Acta neuropathologica
pub_type: 历史文章,杂志文章,评审
doi:10.1007/s00401-007-0200-2
更新日期:2007-05-01 00:00:00
abstract::A case of 14-year-old girl is reported in whom an alveolar rhabdomyosarcoma occurred in the soft tissues of the left forearm 4 years prior to death. Despite extensive surgery as well as chemotherapy and radiotherapy the tumor recurred locally and produced extensive metastases including a metastasis to the brain. Cereb...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687824
更新日期:1985-01-01 00:00:00
abstract::We studied the microscopic features of 137 cases of human cerebral infarct. In each case, the age of the lesion was determined by measuring the time elapsed between initial clinical presentation and date of surgery or death. Multiple microscopic variables were analyzed on hematoxylin and eosin-stained sections. There ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-004-0918-z
更新日期:2004-12-01 00:00:00
abstract::The cerebrovascular lesions of severe chronic hypertension were studied by light microscopy in perfusion-fixed, subserially sectioned brains from stroke-prone spontaneously hypertensive rats (SHRSP). The leakage and spread of plasma proteins were visualized by immunohistochemical detection of extravasated fibrinogen a...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00690831
更新日期:1985-01-01 00:00:00
abstract::Laminin alpha2 (merosin)-deficient congenital muscular dystrophy (CMD) patients show progressive muscle fiber necrosis and ineffective muscle regeneration. This is probably due to decreased formation of multi nucleated myotubes resulting from a myoblast fusion defect. When receiving a mechanical signal from muscle mem...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-004-0884-5
更新日期:2004-09-01 00:00:00
abstract::Huntington's disease (HD) is an autosomal dominant neurodegenerative disease caused by an expanded trinucleotide CAG repeat in the gene coding for huntingtin. Deregulation of chromatin remodeling is linked to the pathogenesis of HD but the mechanism remains elusive. To identify what genes are deregulated by trimethyla...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-013-1103-z
更新日期:2013-05-01 00:00:00
abstract::The hemizygote of the macular mutant mice, which is clinically and neuropathologically considered to be a model of Menkes kinky hair disease (MKHD), were injected intraperitoneally four times with 10, 20, 20 and 30 micrograms of cupric chloride on days 4, 6, 8 and 10 after birth, respectively. Their cerebral and cereb...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00689595
更新日期:1988-01-01 00:00:00
abstract::The immunohistochemical distribution of alpha and beta subunits of S-100 protein (S-100 alpha, S-100 beta, respectively) in 138 cases of human brain tumors was investigated by the avidin-biotin immunoperoxidase method. Brain tumors can be divided into four groups: group 1 [S-100 alpha (+) and/or S-100 beta (+)]; astro...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00296376
更新日期:1991-01-01 00:00:00
abstract::Chronic wasting disease (CWD), a progressive neurological disorder of captive mule deer, black-tailed deer, hybrids of mule deer and white-tailed deer and Rocky Mountain elk, is characterized neuropathologically by widespread spongiform change of the neuropil, intracytoplasmic vacuolation in neuronal perikarya and ast...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00310125
更新日期:1991-01-01 00:00:00
abstract::A woman of 36 was admitted to hospital because of griping abdominal pain which occurred especially during the night when turning in bed. She had a history of constipation and bloating since birth. Irrigoscopy revealed megacolon extending from the middle of the transverse colon to the rectum. A rectal biopsy excluded H...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00688193
更新日期:1987-01-01 00:00:00
abstract::Little information is available regarding the morphological changes in the mitochondria in amyotrophic lateral sclerosis (ALS). In particular, mitochondrial changes in dorsal root ganglion cells have not yet been examined. We therefore conducted an electron microscopic examination of the mitochondria in dorsal root ga...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-007-0299-1
更新日期:2007-12-01 00:00:00
abstract::We examined the effect of lactic acid on cultured human glioma cell lines expressing glial fibrillary acidic protein (GFAP), vimentin and neuron-specific enolase (NSE). The growth of the cells was inhibited by the lactic acid in a dose-dependent manner. At 56 mM of lactic acid, the surviving cells of the KNS-42-c2 cel...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00296110
更新日期:1990-01-01 00:00:00
abstract::Amplification of the epidermal growth factor receptor (EGFR) gene is found in about 40% of glioblastomas (GBMs) but is rarely detected in GBM cell lines. We confirmed that the exceptional SKMG-3 GBM cell line retained amplified EGFR genes in vitro, and found that these sequences were concentrated on extra-chromosomal ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010000332
更新日期:2001-06-01 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::Adult rabbits were subjected to 4.5 Gy of whole-blody or brain alone gamma-irradiation, and their hippocampus was examined with the light and electron microscope. Pycnotic cells were found at the base of the granular layer of the dentate gyrus in the so-called subgranular zone, as soon as 3 h after irradiation, and we...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00690520
更新日期:1979-12-01 00:00:00
abstract::An autopsy case of unclassifiable presenil dementia is reported. The outstanding pathological findings were as follows; 1. presence of senile plaques, neurofibrillary changes, Pick bodies, Hirano bodies, granulovacuolar degeneration of neurons, etc. 2. numerous Lewy bodies in the brain stem and diencephalon, 3. peculi...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00685366
更新日期:1976-11-15 00:00:00
abstract::Pleomorphic xanthoastrocytoma (PXA), a tumor most often presenting superficially over the cerebral hemisphere of young subjects, has certain morphological similarities to fibrous histiocytoma (or fibrous xanthoma) of the meninges and brain, namely the occurrence of lipid-laden neoplastic cells and, frequently, a dense...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00691285
更新日期:1989-01-01 00:00:00
abstract::Six medulloblastomas were studied by electron microscopy. Two features were found which seem to be constant and essential characteristics of medulloblastoma. First, cell junctions are abundant between tumor cells. These are mostly desmosome-like but other, closer junctions, were also seen. Second, the capillary endoth...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00685966
更新日期:1975-10-27 00:00:00
abstract::The fine structures of two pineal parenchymal neoplasms has been described. The tumors contained a predominance of small, poorly differentiated cells with prominent nuclei and scanty cytoplasm. These cells were similar to those found in medulloblastomas, primitive cerebral neuroectodermal tumors, and fetal cerebellum ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00699239
更新日期:1981-01-01 00:00:00
abstract::The occurrence and topographic analysis of granulovacuolar degeneration (GVD) in the hippocampal cortex of mentally normal controls (75 cases) and patients with Alzheimer's dementia (AD; 17 cases which included Alzheimer's disease and senile dementia of Alzheimer type), multi-infarct dementia (MID; 16 cases), Pick's d...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00304627
更新日期:1992-01-01 00:00:00
abstract::The presence and distribution of human immunodeficiency virus (HIV) were examined in the CNS of two children with severe HIV encephalitis and myelitis. Using polymerase chain reaction-mediated DNA amplification and subsequent Southern analysis, proviral HIV gag sequences were identified in brain tissue of both patient...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00427211
更新日期:1992-01-01 00:00:00
abstract::Using a four-step immunoperoxidase (PAP) method and the monoclonal antibody MAbA9-C6 (MAbA9-C6), which defines an epitope of the retinal S-antigen (S-Ag), we investigated the S-Ag immunoreactivity in human fetal, newborn, infantile and adult pineal glands and in 13 human pineal parenchymal tumors. S-Ag immunoreactivit...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00688043
更新日期:1986-01-01 00:00:00
abstract::Intracranial solitary fibrous tumors (SFTs) are typically dural-based, CD34-positive neoplasms of uncertain histogenesis. We examined ten cases of meninges obtained at autopsy from patients with no history of neurological illness, head trauma, or neurosurgical intervention, and ten cases of typical meningiomas with at...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010100389
更新日期:2001-10-01 00:00:00
abstract::In the cytoplasm of Schwann cells of a sural nerve biopsy from a 21-year-old female patient with chronic neuropathy we noted numerous unique, usually double membrane-bound, osmiophilic, granular or globular inclusions, approximately 30-600 microm in diameter. Some of these membrane-bound vesicular or tubular structure...
journal_title:Acta neuropathologica
pub_type: 杂志文章
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更新日期:1999-10-01 00:00:00
abstract::The dynamics of cerebrospinal fluid (CSF) tau and Aβ biomarkers over time in Alzheimer's disease (AD) patients from prodromal pre-symptomatic to severe stages of dementia have not been clearly defined and recent studies, most of which are cross-sectional, present conflicting findings. To clarify this issue, we analyze...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-013-1151-4
更新日期:2013-11-01 00:00:00