Abstract:
:The brain is frequently affected by the spread of lung cancer, and haematogenous metastasis is a common route to brain metastasis. We therefore developed an isogenic brain metastasis model of lung cancer to use the Lewis lung carcinoma cell line and analysed dynamics of neoplastic cells after extravasation. Histological analysis revealed two characteristic patterns: metastatic foci exhibiting an angiocentric pattern were designated 'perivascular proliferations'; neoplastic cells infiltrating the brain parenchyma were designated 'invasive proliferations'. Electron microscopic observation of perivascular proliferations showed that neoplastic cells were confined to the perivascular space. In invasive proliferations, however, fragments of collagen fibre were observed in the gaps between neoplastic cells, indicating that the neoplastic cells had disintegrated the pia-glial membrane. We analysed the expressions of matrix metalloproteinase-2 (MMP-2) and MMP-9 by using both immunohistochemical analysis and real-time polymerase chain reaction analysis. MMP-2 expression was significantly higher in invasive proliferations. MMP-9 expression was significantly higher in day 7, but there was no significant difference in day 11. The pia-glial membrane and perivascular space are the barriers that neoplastic cells must overcome to infiltrate the brain. In conclusion, our findings suggest that brain metastasis requires two distinct processes.
journal_name
Neuropathol Appl Neurobioljournal_title
Neuropathology and applied neurobiologyauthors
Saito N,Hatori T,Murata N,Zhang ZA,Ishikawa F,Nonaka H,Iwabuchi S,Samejima Hdoi
10.1111/j.1365-2990.2007.00799.xsubject
Has Abstractpub_date
2007-06-01 00:00:00pages
288-98issue
3eissn
0305-1846issn
1365-2990pii
NAN799journal_volume
33pub_type
杂志文章abstract::Defects of mitochondrial function have been proposed as a potential mechanism in the development and pathogenesis of Alzheimer's disease (AD) and neuronal apoptosis. Mitochondrial enzyme-deficient pyramidal neurones are found in greater quantities in the hippocampus of AD patients than in age-matched controls. The pre...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1046/j.1365-2990.2002.00414.x
更新日期:2002-10-01 00:00:00
abstract::Minute amounts of tetanus toxin injected into the hippocampus of rats results in an epileptiform syndrome. When the toxin injection is made unilaterally or bilaterally into the ventral hippocampus, about one-third of animals with seizures show bilateral neuronal loss in dorsal CA1 of the hippocampus after 1 week. In a...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1994.tb00985.x
更新日期:1994-08-01 00:00:00
abstract:AIMS:The deposition of amyloid peptides (A beta) in the cortex and hippocampus is the primary trigger of Alzheimer's disease (AD). Recent studies also indicated that the M2 subtype of muscarinic acetylcholine receptors (M2mAChR) may be a key molecule involved in cognitive dysfunction. Thus, the purpose of this study wa...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.2007.00932.x
更新日期:2008-10-01 00:00:00
abstract::Multiple system atrophy (MSA) is an unrelenting, sporadic, adult-onset, neurodegenerative disease of unknown aetiology. Its clinically progressive course is characterized by a variable combination of parkinsonism, cerebellar ataxia and/or autonomic dysfunction. Neuropathological examination often reveals gross abnorma...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2990.2011.01234.x
更新日期:2012-02-01 00:00:00
abstract::A few nanograms of tetanus toxin injected into a rat hippocampus causes a chronic epileptic syndrome characterized by brief seizures that recur intermittently for about 6 weeks. Cognitive and other behavioural impairments persist after the seizures and other epileptic electrographic activity have remitted, and may be ...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1992.tb00764.x
更新日期:1992-02-01 00:00:00
abstract::Neural tissue grafting presently stands as one of the more intriguing experimental strategies being applied to the problem of spinal cord regeneration. The following annotation presents an overview of recent investigations which have shown: that peripheral nerve grafts can stimulate axonal outgrowth in many descending...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2990.1985.tb00007.x
更新日期:1985-03-01 00:00:00
abstract::Recent studies have described silver- and tau-positive glia and threads in the degenerating lesions of progressive supranuclear palsy. In this study, Gallyas-Braak silver impregnation and several immunohistochemical techniques were employed to examine the distribution of tangles, abnormal glia and threads in the cereb...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1995.tb01066.x
更新日期:1995-08-01 00:00:00
abstract::Cell death in gliomas may occur either by apoptosis, or, in the case of high grade tumours, by necrosis, but questions remain as to the pathogenesis and relationship between these processes. The development of cell death was investigated in multicellular glioma spheroid cultures. Spheroids model the development of cel...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1046/j.0305-1846.2001.00319.x
更新日期:2001-08-01 00:00:00
abstract:AIM:Levels of ubiquitin carboxyl-terminal hydrolase L1 (UCHL1) are robustly increased in spinal muscular atrophy (SMA) patient fibroblasts and mouse models. We therefore wanted to establish whether changes in UCHL1 contribute directly to disease pathogenesis, and to assess whether pharmacological inhibition of UCHL1 re...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12168
更新日期:2014-12-01 00:00:00
abstract::The mechanisms underlying secondary or delayed cell death following traumatic brain injury (TBI) are poorly understood. Recent evidence from experimental models of TBI suggest that diffuse and widespread neuronal damage and loss is progressive and prolonged for months to years after the initial insult in selectively v...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章,评审
doi:10.1046/j.1365-2990.1998.00121.x
更新日期:1998-08-01 00:00:00
abstract:AIMS:Frontotemporal lobar degeneration (FTLD) is clinically and pathologically heterogeneous. Although associated with variations in MAPT, GRN and C9ORF72, the pathogenesis of these, and of other nongenetic, forms of FTLD, remains unknown. Epigenetic factors such as histone regulation by histone deacetylases (HDAC) may...
journal_title:Neuropathology and applied neurobiology
pub_type: 历史文章,杂志文章
doi:10.1111/nan.12153
更新日期:2015-02-01 00:00:00
abstract:AIMS:Limb-girdle muscular dystrophy R9 (LGMDR9) is an autosomal recessive disorder caused by mutations in the fukutin-related protein gene (FKRP), encoding a glycosyltransferase involved in α-dystroglycan modification. Muscle atrophy, a significant feature of LGMDR9, occurs by a change in the normal balance between pro...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12684
更新日期:2020-12-18 00:00:00
abstract::Ubiquitin targets proteins for attack by certain proteolytic enzymes, but the ubiquitinated cytoplasmic inclusions seen in some chronic neurodegenerative diseases may indicate the occurrence of reparative rather than destructive metabolic events. We have examined the production of ubiquitin in motor neurons of the rat...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1994.tb01012.x
更新日期:1994-12-01 00:00:00
abstract::Fibre type differentiation was carried out on 20 biopsies from Duchenne Muscular Dystrophy (DMD) sufferers using the acid-preincubated reaction for myofibrillar ATPase. Fibres, classified as either type 1, type 2 or 2C, were counted and their minimum diameters (least fibre axis) measured. Particular attention was paid...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1985.tb00039.x
更新日期:1985-11-01 00:00:00
abstract::Congenital myopathies are clinically and genetically a heterogeneous group of early onset neuromuscular disorders, characterized by hypotonia and muscle weakness. Clinical severity and age of onset are variable. Many patients are severely affected at birth while others have a milder, moderately progressive or nonprogr...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章,评审
doi:10.1111/nan.12369
更新日期:2017-02-01 00:00:00
abstract::Brains from human fetuses of 13 to 27 weeks gestation have been examined immunohistologically for the presence of macrophages using the marker alpha-1-anti-chymotrypsin. A preliminary study demonstrated this to be a satisfactory marker of brain macrophages, although macrophages were also weakly positive for the more s...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1991.tb00738.x
更新日期:1991-10-01 00:00:00
abstract::The critical role of the neurofibromatosis 1 (NF1) gene as a tumour suppressor has been clearly demonstrated for malignancies arising in NF1 patients. However, little is known about the more common benign tumours, such as the pilocytic astrocytoma. Most NF1-associated astrocytomas are benign and clinically non-progres...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1046/j.1365-2990.2000.00258.x
更新日期:2000-08-01 00:00:00
abstract:AIMS:Frontotemporal lobar degeneration (FTLD) and motor neurone disease are linked by the possession of a hexanucleotide repeat expansion in C9ORF72, and both show neuronal cytoplasmic inclusions within cerebellar and hippocampal neurones which are TDP-43 negative but immunoreactive for p62 and dipeptide repeat protein...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12178
更新日期:2015-08-01 00:00:00
abstract:AIM:To understand the progression of CLN1 disease and develop effective therapies we need to characterize early sites of pathology. Therefore, we performed a comprehensive evaluation of the nature and timing of early CLN1 disease pathology in the spinal cord, which appears especially vulnerable, and how this may affect...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12658
更新日期:2020-08-25 00:00:00
abstract::Using a combined biochemical and histological approach certain conclusions can be drawn as to the origin of the increase in lysosomal enzymes in white matter from MS brains. Firstly, there is a gradient of lysosomal enzyme activity, plaque greater than periplaque greater than macroscopically normal white matter, which...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1978.tb01357.x
更新日期:1978-11-01 00:00:00
abstract::This paper continues the historical review on the concept of a sensorimotor cortex into the twentieth century. Paul Flechsig was probably the first to accept this concept after the turn of the century. Like Munk, he believed in an almost reflex-like unity between cortical sensory and motor function. With the help of h...
journal_title:Neuropathology and applied neurobiology
pub_type: 历史文章,杂志文章
doi:10.1111/j.1365-2990.1982.tb00264.x
更新日期:1982-03-01 00:00:00
abstract:AIMS:Plectin, a universally expressed multi-functional cytolinker protein, is crucial for intermediate filament networking, including crosstalk with actomyosin and microtubules. In addition to its involvement in a number of diseases affecting skin, skeletal muscle, heart, and other stress-exposed tissues, indications f...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12635
更新日期:2021-02-01 00:00:00
abstract::The anatomical arrangement of the pia mater suggests that it may act as a regulatory interface between cerebrospinal fluid and the surface of the brain and between arterioles within the brain and the surrounding neural tissue. However, the functional aspects of such a barrier are difficult to evaluate in vivo. In the ...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1991.tb00739.x
更新日期:1991-10-01 00:00:00
abstract::Mice and rats are found to be equally susceptible to developing symmetrical brain stem lesions on exposure to alpha-chlorohydrin and in both species the earliest neurotoxic changes are strictly confined to glial cells, particularly astrocytes; haemorrhages are not found in either species. Minimal evidence of increased...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1993.tb00434.x
更新日期:1993-06-01 00:00:00
abstract::Axonal damage in multiple sclerosis (MS) is correlated to disease progression. Early axonal damage may be compensated for by regenerative processes. Growth-associated protein 43 (GAP-43) is a marker for axonal growth and synaptogenesis in various neurodegenerative diseases. We investigated the expression of GAP-43 in ...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.2006.00730.x
更新日期:2006-06-01 00:00:00
abstract::Protein aggregation, mitochondrial impairment and oxidative stress are common to multiple neurodegenerative diseases. Homeostasis is regulated by a balanced set of anabolic and catabolic responses, which govern removal and repair of damaged proteins and organelles. Macroautophagy is an evolutionarily conserved pathway...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2990.2010.01062.x
更新日期:2010-04-01 00:00:00
abstract::The effects of exposure to a cytotoxic agent, methylazoxymethanol acetate (MAM Ac), on the distribution, density and quantitative morphology of microglia in the rat forebrain have been examined with the aid of a peroxidase-conjugated lectin derived from Griffonia simplicifolia. Following exposure to MAM Ac (25 mg/kg m...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1992.tb00832.x
更新日期:1992-12-01 00:00:00
abstract::Transparent Golgi preparations counterstained for Alzheimer's neurofibrillary changes rendered possible the demonstration of neuropil threads in defined cellular processes. Only dendrites of tangle-bearing cortical nerve cells were found to contain neuropil threads. Processes of glial cells as well as axons present in...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1988.tb00864.x
更新日期:1988-01-01 00:00:00
abstract:INTRODUCTION:Cerebral ischaemia is the defining pathophysiological abnormality in most forms of vascular dementia (VAD), but the pathogenesis of the dementia remains poorly understood. In Alzheimer's disease (AD), there is early loss of synaptic proteins, but these have been little studied in VAD. MATERIALS AND METHOD...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12215
更新日期:2015-06-01 00:00:00
abstract::Transmissible mink encephalopathy (TME) is probably a form of the sheep disease, scrapie, introduced by accidentally feeding mink with scrapie-infected sheep tissues. Although no successful transmissions of TME to mice have been achieved previous work has involved various limitations. To maximize the possibility of tr...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1986.tb00051.x
更新日期:1986-03-01 00:00:00