Abstract:
:In order to investigate the functional role of endothelium and vasoeffector mechanism in cerebrovascular responses to neuropeptides, the stainless steel cannula inserting method was applied to examine the responses to intraluminally-applied bradykinin, substance P and vasopressin in isolated and perfused canine basilar arteries. In control vessels with intact endothelium, each neuropeptide induced a monophasic dilation at lower doses, and a biphasic response, i.e., an initial dilation followed by a secondary constriction, at higher doses. The dilation was significantly reduced and the constriction was significantly enhanced, while the dilation to papaverine was not modified by endothelial removal with intraluminal saponin. The same tendency was observed in the responses after extraluminal treatment with oxyhaemoglobin. The monophasic constrictions to prostaglandin F2 alpha and potassium chloride were significantly potentiated by the endothelial removal. The augmented constrictions to the neuropeptides were significantly diminished by indomethacin (a cyclooxygenase inhibitor), OKY-046 (a thromboxane synthetase inhibitor) and nimodipine (a dihydropyridine calcium antagonist), but not by AA-861 (a lipoxygenase inhibitor). These results suggest that the neuropeptide causes an endothelium-dependent dilation and a constriction of smooth muscles, and that the enhanced constriction might be relevant in part with thromboxane A2, linked with calcium influx into smooth muscle cells in cerebral arteries.
journal_name
Neurol Resjournal_title
Neurological researchauthors
Tsuji T,Cook DAdoi
10.1080/01616412.1995.11758611subject
Has Abstractpub_date
1995-06-01 00:00:00pages
193-200issue
3eissn
0161-6412issn
1743-1328journal_volume
17pub_type
杂志文章abstract::We elected to compare the clinical outcomes of carotid endarterectomy (CEA) patients who were thought to be at increased risk for peri-operative complications because of advanced age (> 79 years), medical comorbidities and contralateral internal carotid artery occlusion to patients without these risk factors. A prospe...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164102101199936
更新日期:2002-01-01 00:00:00
abstract::Ahead of Print article withdrawn by publisher. ...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164109X12445616596283
更新日期:2009-08-21 00:00:00
abstract::Using the previously reported method of experimental localized brainstem infarct in dogs, we designed this study to elucidate sequential changes of regional cerebral blood flow (rCBF) in three separate regions of the central nervous system: the cerebral cortex, thalamus, and midbrain. The data obtained were referred t...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.2000.11741061
更新日期:2000-03-01 00:00:00
abstract:OBJECTIVE:To assess the clinical significance of hepatitis B virus (HBV) infection in patients with cerebral venous sinus thrombosis (CVST). METHODS:Twenty-two patients with CVST confirmed by magnetic resonance venography (MRV) or digital subtraction angiography (DSA) and 743 controls with ischemic stroke confirmed by...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/1743132815Y.0000000003
更新日期:2015-06-01 00:00:00
abstract::Objective: The protective effects of 2%-4% hydrogen gas in delayed encephalopathy after acute carbon monoxide poisoning (DEACMP) have been previously reported. This study aimed to assess the neuroprotective effects of high concentration hydrogen (HCH) on DEACMP.Methods: A total of 36 male Sprague-Dawley rats were divi...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.2019.1685064
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVES:Recent studies have suggested that rehabilitation therapy can accelerate functional recovery after a stroke. Although often overlooked, the cortical hemisphere contralateral to an infarction plays an important role. This study investigates alterations in metabolism of both the damaged ('ipsilateral') as well...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/1743132814Y.0000000350
更新日期:2014-05-01 00:00:00
abstract::Although the circulation of cerebrospinal fluid enjoys an apparent simplicity, its underlying basis is amazingly complex. Many factors influence how CSF flows through the human central nervous system. In the presence of hydrocephalus and subsequent shunt placement, this system is further complicated. The challenge bef...
journal_title:Neurological research
pub_type: 杂志文章,评审
doi:10.1080/01616412.2000.11741037
更新日期:2000-01-01 00:00:00
abstract::Following cerebral ischemia, the extracellular concentration of excitatory amino acids increases, and the excitatory cell death may play an important role contributing to ischemic neuronal damage. Although sequential metabolic changes in permanent local cerebral ischemia have been reported, the effect of reperfusion i...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.1996.11740462
更新日期:1996-12-01 00:00:00
abstract::We currently have used three drugs in combination [mannitol, vitamin E and glucocorticoid (beta-methasone)] for the treatment of cerebral infarction in the acute stage. For the purpose of evaluating the efficacy of this therapy, we have conducted experiments evaluated by chemiluminescence (CL), energy metabolism and w...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.1988.11739819
更新日期:1988-06-01 00:00:00
abstract:OBJECTIVES:The presence of beta-amyloid (betaA) deposition, induction of reactive gliosis and dystrophic neurites, is a characteristic feature of neuritic plaques in Alzheimer's disease. In vitro, betaA-exposed astrocytes become reactive, similar to astrocytes in contact with betaA plaques in vivo. How betaA-exposed re...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164105X40020
更新日期:2005-07-01 00:00:00
abstract:OBJECTIVES:The stroke-prone spontaneously hypertensive rat is a genetic model of severe hypertension with secondary vascular alterations. The aim of this study was to determine the influence of chronic hypertension and ramipril treatment on the extracellular matrix in the cerebral microvasculature. METHODS:The study c...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164105X49256
更新日期:2005-07-01 00:00:00
abstract:OBJECTIVES:Patients presenting to the emergency room with an acute or subacute onset of focal neurological deficits are evaluated initially by non-contrast computed tomogram (CT) of the brain. This is primarily carried out to differentiate an ischemic from hemorrhagic stroke. However, other neurological conditions may ...
journal_title:Neurological research
pub_type: 杂志文章,评审
doi:10.1179/016164109X12445505689607
更新日期:2009-10-01 00:00:00
abstract:OBJECTIVE:This study investigated the relationship between traumatic coagulopathy and severe brain swelling (SBS) during decompressive surgery to evacuate a supratentorial intradural mass lesion in patients with traumatic brain injury (TBI). METHODS:A retrospective study was conducted in 96 patients who consecutively ...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/1743132813Y.0000000187
更新日期:2013-07-01 00:00:00
abstract:OBJECTIVE:Neurovascular ultrasound (nUS) is widely used as a screening and monitoring tool in patients with spontaneous cervical artery dissection (sCAD). The aim of the study was to describe the sonographical course of the affected arteries in patients with a MRI-proven sCAD by repetitive nUS. METHODS:Thirty-seven co...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/174313208X319080
更新日期:2008-09-01 00:00:00
abstract::Monitoring of brain tissue oxygenation (ptiO2) enables early diagnosis of secondary cerebral ischemia and may guide a cerebral perfusion pressure (CPP) orientated therapy. The purpose of our study was to explain the concept of ptiO2-autoregulation, defined as the ability of the brain to maintain ptiO2 despite changes ...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164103101201580
更新日期:2003-06-01 00:00:00
abstract::Brain tumours were induced by intracerebral inoculation of beagle puppies with Avian sarcoma virus (ASV) suspension. The inoculation produced solitary or multiple sarcomas in three dogs and intraventricular anaplastic gliomas in four dogs. At the time of the first tumour positive CT-control Iodine-125 seeds (activity ...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.1984.11739685
更新日期:1984-12-01 00:00:00
abstract:OBJECTIVES:Parkinson's disease (PD) afflicts approximately 1-2% of the population over 50 years of age. No cures or effective modifying treatments exist and clinical diagnosis is currently confounded by a lack of definitive biomarkers. We sought to discover potential biomarkers in the cerebrospinal fluid (CSF) of neuro...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/1743132812Y.0000000063
更新日期:2012-09-01 00:00:00
abstract:OBJECTIVE:In this clinical case-control study, we investigated statin treatment in stroke patients on a range of inflammatory effectors in peripheral blood. We focus on RhoA GTPase and its downstream effectors as a future inflammatory target in stroke treatment. METHODS:Data from 10 patients already on statins at stro...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.2018.1558000
更新日期:2019-04-01 00:00:00
abstract::From 118 transsphenoidally operated patients, 100 had a pituitary adenoma; 33 prolactinomas, 20 HGH-producing, 2 ACTH-producing and 45 inactive adenomas. The first transsphenoidal operation did not cause any mortality; after reoperation for suspected recurrence on follow-up, 2 patients died; thus, the global managemen...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.1985.11739714
更新日期:1985-09-01 00:00:00
abstract:OBJECTIVE:The unified Parkinson's disease rating scale (UPDRS) is the most widely used tool to rate the severity and the stage of Parkinson's disease (PD). However, the mentation, behavior and mood (MBM) subscale of the UPDRS has received little investigation regarding its validity and sensitivity. Three items of this ...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164107X251772
更新日期:2008-06-01 00:00:00
abstract::Our aim was to evaluate the relationship between the neurological outcome of tuberous sclerosis complex (TSC) and the findings obtained from both cranial magnetic resonance imaging (MRI) and single voxel proton spectroscopy (SVPS). MRIs of 13 children who met the diagnostic criteria for TSC were taken. Eleven of these...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164107X163996
更新日期:2007-07-01 00:00:00
abstract:BACKGROUND:Diffusion-weighted imaging (DWI) abnormalities can frequently be detected after carotid endarterectomy (CEA) and carotid angioplasty with stent placement (CAS) of the carotid arteries. We looked for possible predictors for the development of DWI lesions during the intervention. METHODS:We investigated 41 pa...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164105X49391
更新日期:2006-07-01 00:00:00
abstract::We describe a novel approach for analysing the hemodynamic alterations that result after focal cerebral ischemia. This approach utilizes a temporal correlation analysis of first pass transit data obtained with functional imaging. First pass transits of injected contrast agents are measured with dynamic CT scanning. No...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.1996.11740394
更新日期:1996-04-01 00:00:00
abstract:OBJECTIVES:The present study investigated the effects of tetrahydrobiopterin (BH4) on cerebral infarction after transient focal ischemia in rats. METHODS:Focal ischemia (1·5 hours) was created in male Sprague-Dawley rats (250-280 g) by middle cerebral artery occlusion. Some rats were treated with 20 mg/kg tetrahydrob...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164110X12700393823651
更新日期:2011-12-01 00:00:00
abstract:OBJECTIVES:Papaverine has been used in treating vasospasm following subarachnoid hemorrhage (SAH). However, its action mechanism for cerebral vascular relaxation is not clear. Potassium and calcium channels are closely related to the contraction and relaxation of cerebral smooth muscle. Therefore, to identify the role ...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164107X191021
更新日期:2007-09-01 00:00:00
abstract::The influence of acidic fibroblast growth factor (aFGF) on sleep was studied in conscious rabbits. An intravenous (i.v.) bolus injection of aFGF induced a significant increase in sleep duration in comparison with animals that received vehicle solution. Somnogenic effects were obtained 30 min following i.v. aFGF admini...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.1996.11740472
更新日期:1996-12-01 00:00:00
abstract::Promyelocytic leukemia (PML) protein is involved in apoptotic death of cultured neuronal cells, but its role in ischemic brain damage remains uncertain. In this study, we investigated change of immunoreactivity for PML protein in rat brain after transient middle cerebral artery occlusion, and compared the results with...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164101101199162
更新日期:2001-10-01 00:00:00
abstract::The application of optical spectroscopy for intra-operatively delineating brain tumors has been studied in this paper. The classification of tissue as normal, tumor and boundary is done using the LAMSTAR neural network (NN). The objective is to combine both fluorescence and reflectance as attributes to be used for the...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1179/016164104225017802
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVE:The aim of the present study was to analyse inflammatory cells in lumbar disc tissue under cyclooxygenase-2 (COX-2) inhibitor therapy, to detect their prevalence in different subtypes of lumbar disc herniations and to assess the influence of inflammatory reactions in herniated disc tissue on postoperative out...
journal_title:Neurological research
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1179/016164105X49210
更新日期:2005-09-01 00:00:00
abstract:OBJECTIVES:There is no definitive data regarding the usefulness of Brain microbleeds (BMBs) as an imaging marker with homeostatic markers to predict intracerebral hemorrhage (ICH) and ischemic stroke risk to personalize decisions on anticoagulation in AF. In this study, we prospectively evaluated clinical, radiological...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.2018.1517111
更新日期:2018-12-01 00:00:00