Abstract:
BACKGROUND AND PURPOSE:The use of lithium as a neuroprotective agent has been demonstrated using various models in which improvements in infarct size, DNA damage, and neurological function were reported. We further investigated neurohemodynamic aspects of the treatment-associated recovery by assessing the therapeutic efficacy of delayed chronic lithium treatment using functional MRI. METHODS:Ipsilesional functional MRI activations in the somatosensory cortex, acquired 2 weeks after the 90-minute transient middle cerebral artery occlusion, were compared between lithium- and saline-treated rats. Specifically, MRI signal changes based on blood oxygenation level dependence and functional cerebral blood volume responses were examined using electrical stimulation of forelimbs. Additional immunohistochemical assays were performed. RESULTS:The ratio of ipsilesional to contralesional blood oxygenation level dependence response magnitudes significantly improved with lithium treatments. In contrast, the increase of the functional cerebral blood volume response magnitude ratio was not statistically significant. Nonetheless, the lithium treatment induced significant enhancements of total functional MRI activation (defined as a product of activation volume and response magnitude) for both blood oxygenation level dependence and functional cerebral blood volume methods. Increased cerebral blood volume in periinfarct tissues suggests a possible stroke-induced vascular transformation in both saline- and lithium-treated rats; however, other MRI-derived vascular parameters (vascular size index and microvascular volume) and immunohistochemical staining (CD31, glia fibrillary-associated protein, and matrix metalloproteinase-9) may imply that the neoformation of vasculature was differently affected by the lithium treatment. CONCLUSIONS:The delayed chronic lithium treatment enhanced the blood oxygenation level dependence functional MRI response magnitude in the absence of neurological improvement and influenced vascular formation in poststroke animal models.
journal_name
Strokejournal_title
Strokeauthors
Kim YR,van Meer MP,Tejima E,Murata Y,Mandeville JB,Dai G,Chuang DM,Rosen BR,Lo EHdoi
10.1161/STROKEAHA.107.492215subject
Has Abstractpub_date
2008-02-01 00:00:00pages
439-47issue
2eissn
0039-2499issn
1524-4628pii
STROKEAHA.107.492215journal_volume
39pub_type
杂志文章相关文献
STROKE文献大全abstract:BACKGROUND AND PURPOSE:To investigate whether neuroimaging information has added predictive value compared with clinical information for independency in activities of daily living (ADL) 1 year after stroke. METHODS:Seventy-five first-ever middle cerebral artery stroke survivors were evaluated in logistic regression an...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.STR.0000206462.09410.6f
更新日期:2006-04-01 00:00:00
abstract:BACKGROUND:Gene transfer to peripheral arteries has been accomplished with catheter-based approaches. Recently, gene transfer to the carotid artery and intracranial vessels has been achieved both in vitro and in vivo. Although gene therapy for cerebral vascular disease may not be accomplished for years, currently avail...
journal_title:Stroke
pub_type: 杂志文章,评审
doi:10.1161/01.str.27.9.1688
更新日期:1996-09-01 00:00:00
abstract:BACKGROUND AND PURPOSE:The mechanisms underlying frontal lobe dysfunction in moyamoya disease (MMD) are unknown. We aimed to determine whether chronic ischemia induces subtle microstructural brain changes in adult MMD and evaluated the association of changes with neuropsychological performance. METHODS:MRI, including ...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.114.007407
更新日期:2015-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Current guidelines suggest that cardiac arrest (CA) survivors should be ventilated with 100% O(2) after resuscitation. Breathing 100% O(2) may worsen neurological outcome after experimental CA. This study tested the hypothesis that graded reoxygenation, with oximetry guidance, can safely reduce F...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.STR.0000248455.73785.b1
更新日期:2006-12-01 00:00:00
abstract::Among 21 patients with angiographically demonstrated stenosis of the middle cerebral artery (MCA) 14 presented with a stroke and 7 with transient ischaemic attacks (TIAs). Of the former 4 had further strokes (3 fatal); of the latter one had a fatal stroke. Only 2 of the 21 patients had TIAs during the follow-up period...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.15.2.237
更新日期:1984-03-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Osteogenic protein-1 (OP1) not only possesses trophic activity on bone tissue but also influences neuronal survival and differentiation in vitro. Specific receptors for OP1 are present in brain and spinal cord and can be upregulated during cerebral contusion. OP1 is a member of the transforming g...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.30.1.126
更新日期:1999-01-01 00:00:00
abstract::Five patients with nonseptic cerebral embolism of cardiac origin are reported in whom early anticoagulant therapy resulted in clinical deterioration or death from frank hemorrhage into the acute infarct. In each patient an initial CT scan excluded the presence of intracerebral hemorrhage and a second CT scan, after cl...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.15.3.426
更新日期:1984-05-01 00:00:00
abstract::The frequency of angiographically defined asymptomatic CAD in patients with carotid disease is 40%. Although the prognosis of patients with asymptomatic 1-vessel or 2-vessel CAD is good (annual cardiac mortality rate less than 2%), the prognosis of asymptomatic 3-vessel disease or left main CAD is substantially less f...
journal_title:Stroke
pub_type: 杂志文章,评审
doi:10.1161/01.str.23.3.433
更新日期:1992-03-01 00:00:00
abstract::Background and Purpose- If a relationship between stroke etiology and thrombus computed tomography characteristics exists, assessing these characteristics in clinical practice could serve as a useful additional diagnostic tool for the identification of stroke subtype. Our purpose was to study the association of stroke...
journal_title:Stroke
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1161/STROKEAHA.119.027749
更新日期:2020-06-01 00:00:00
abstract:BACKGROUND AND PURPOSE:The epsilon4 allele of the apolipoprotein E (apoE) has been related to the occurrence of myocardial infarction, but its association with ischemic stroke is controversial. We have evaluated the relation between apoE alleles and the occurrence of cerebrovascular ischemia. METHODS:The apoE epsilon ...
journal_title:Stroke
pub_type: 杂志文章,多中心研究
doi:10.1161/01.str.29.2.399
更新日期:1998-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is a hereditary arteriopathy, which mainly involves the brain causing stroke and dementia. Mice expressing the mutated protein display early dysfunction in vasoreactivity in resistance arteries, b...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.107.490029
更新日期:2007-10-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Do children have an increased risk for brain arteriovenous malformation (AVM) recurrence compared with adults and does this risk vary depending on initial presentation with AVM rupture? METHODS:We retrospectively studied 115 patients initially presenting with brain AVM under age 25 years who und...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.120.030135
更新日期:2020-10-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Choroid plexus (CP) secretes a cocktail of neurotrophic factors. In the present study, CP from neonatal pigs was encapsulated within alginate microcapsules for in vitro and in vivo neuroprotective studies. METHODS:In vitro studies involved serum deprivation of rat embryonic cortical neurons and ...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.STR.0000138954.25825.0b
更新日期:2004-09-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Vascular effects of mental stress are only partially understood. Therefore, we studied effects of chronic stress and heart rate (HR) on endothelial function and cerebral ischemia. METHODS:129S6/SvEv mice were randomized to the I(f)-channel inhibitor ivabradine (10 mg/kg per day) or vehicle and u...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.110.598607
更新日期:2011-06-01 00:00:00
abstract:BACKGROUND AND PURPOSE:The impact of anesthesia technique on the outcomes of mechanical thrombectomy for acute ischemic stroke remains an issue of debate. We investigated the association of general anesthesia with outcomes in patients undergoing mechanical thrombectomy for ischemic stroke. METHODS:We performed a cohor...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.116.015343
更新日期:2017-02-01 00:00:00
abstract::A patient with diffuse and focal cerebral dysfunction was found to have absent peripheral pulses. Cerbral angiography revealed evidence of an arteritis with bilateral high grade carotid stenosis. When there was no laboratory confirmation of the arteritis, an iatrogenic etiology (ergotism) was suspected. This was later...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.7.1.88
更新日期:1976-01-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Mild stroke (MS) and rapidly improving stroke (RIS) symptoms are common stroke presentations. Our objective is to describe the short-term outcomes in this population. METHODS:A retrospective analysis of patients with ischemic stroke in the Get With The Guidelines-Stroke registry who arrived ≤4.5...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.115.011528
更新日期:2016-05-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Vasogenic brain edema is a frequent complication of ischemic stroke. The mechanism of the blood-brain barrier opening that underlies the edema formation is poorly understood. In the present study we examined the response of endothelial cells cultured from adult human brain to thrombogenic and fib...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.26.2.265
更新日期:1995-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Limited systemic fibrinolysis and reduced dosage are features of intra-arterial thrombolyis (IAT) that may be advantageous in the treatment of postoperative strokes. However, IAT may increase the risk of surgical bleeding. We sought to determine the safety of postoperative IAT. METHODS:This was ...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.32.6.1365
更新日期:2001-06-01 00:00:00
abstract::Leukoaraiosis quantified by computerized densitometric measurements of reduced Hounsfield numbers was correlated with local cerebral blood flow on the same computed tomographic images of 35 patients with multi-infarct dementia and 16 age-matched elderly normal volunteers. The ratio for area of frontal leukoaraiosis to...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.22.5.609
更新日期:1991-05-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Emboli and proinflammatory mediators are suspected of generating cerebral edema after coronary surgery. In contrast to cardiopulmonary bypass (CPB), off-pump coronary artery bypass surgery (OPCAB) reduces microemboli count and proinflammatory mediator release but carries the risk of hemodynamic i...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.107.496620
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Our aim was to estimate the cost-effectiveness of transferring patients with intracerebral hemorrhage from centers without specialized neurological intensive care units (neuro-ICUs) to centers with neuro-ICUs. METHODS:Decision analytic models were developed for the lifetime horizons. Model input...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.114.006653
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND AND PURPOSE:To test the role of fibrinolysis in stroke, we used a mouse model in which preformed 2.5- to 3-microm-diameter fibrin microemboli are injected into the cerebral circulation. The microemboli lodge in the downstream precapillary vasculature and are susceptible to fibrinolysis. METHODS:We injected ...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.STR.0000137412.35700.0e
更新日期:2004-09-01 00:00:00
abstract:BACKGROUND AND PURPOSE:This prospective study was aimed to evaluate the effects of surgical revascularization on cerebral oxygen metabolism in moyamoya disease. METHODS:This study included totally 69 hemispheres of 42 patients who underwent superficial temporal artery to middle cerebral artery anastomosis and indirect...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.114.006009
更新日期:2014-09-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Recent innovations such as CT installation in ambulances may lead to earlier start of stroke-specific treatments. However, such technically complex mobile facilities require effective methods of correctly identifying patients before deployment. We aimed to develop and validate a new dispatcher id...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.111.634980
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND AND PURPOSE:A J-shaped relationship has been demonstrated between alcohol and both clinical cardiovascular events and carotid atherosclerosis. A similar J-shaped relationship has been found between alcohol intake and inflammatory markers. If inflammation were on the intermediate causal pathway between alcoho...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.0000053849.09308.b2
更新日期:2003-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Determinants of long-term outcome are not well defined in minor stroke patients. This study aims to evaluate which factors are independent long-term predictors of death and major stroke recurrence in a cohort of minor ischemic strokes. METHODS:A cohort of 322 patients with first-ever minor ische...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.29.1.126
更新日期:1998-01-01 00:00:00
abstract::We have investigated the effects of a reduced regional or a reduced body temperature, on pial arteriolar response to a variety of vasoactive stimuli. This has been done by studying the effects of these stimuli on groups of mice with different body temperatures, or with different temperatures of the artificial cerebros...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.9.6.580
更新日期:1978-11-01 00:00:00
abstract:BACKGROUND AND PURPOSE:In primary intracerebral hemorrhage, the presence of contrast extravasation after computed tomographic angiography (CTA), termed the spot sign, predicts hematoma expansion and mortality. Because the biological underpinnings of the spot sign are not fully understood, we investigated whether the ra...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/STROKEAHA.115.009659
更新日期:2015-09-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Astrocytes are potent regulators of brain capillary endothelial cell function. Recently, astrocytes were shown to regulate brain capillary endothelial expression of the fibrinolytic enzyme tissue plasminogen activator (tPA) and the anticoagulant thrombomodulin (TM). To study the mechanism of this...
journal_title:Stroke
pub_type: 杂志文章
doi:10.1161/01.str.30.8.1671
更新日期:1999-08-01 00:00:00