Cerebral vasodilation during hypercapnia. Role of glibenclamide-sensitive potassium channels and nitric oxide.

Abstract:

BACKGROUND AND PURPOSE:The purpose of these experiments was to examine mechanisms by which hypercapnia produces vasodilatation in brain. We examined the hypothesis that dilatation of cerebral arterioles during hypercapnia is dependent on activation of ATP-sensitive potassium channels and formation of nitric oxide. METHODS:Diameters of cerebral arterioles were measured using a closed cranial window in anesthetized rabbits. Changes in diameter of arterioles were measured in response to topical application of acetylcholine and sodium nitroprusside and during two levels of systemic hypercapnia. RESULTS:Increasing arterial PCO2 from 32 +/- 1 mm Hg (mean +/- SE) to 54 +/- 1 and 66 +/- 1 mm Hg dilated cerebral arterioles by 25 +/- 3% and 38 +/- 5%, respectively, from a control diameter of 93 +/- 3 microns. The response to the low level of hypercapnia was attenuated (25 +/- 3% versus 16 +/- 4%, P < .05) by glibenclamide (1 mumol/L), an inhibitor of ATP-sensitive potassium channels. Vasodilatation in response to the high level of hypercapnia was not affected by glibenclamide. Increases in arteriolar diameter in response to sodium nitroprusside were not inhibited by glibenclamide. NG-nitro-L-arginine (300 mumol/L), an inhibitor of nitric oxide synthase, completely inhibited dilatation of cerebral arterioles in response to the low level of hypercapnia and inhibited vasodilatation during the high level of hypercapnia by 66%. CONCLUSIONS:Thus, activation of glibenclamide-sensitive potassium channels may contribute to dilatation of cerebral arterioles during hypercapnia. Cerebral vasodilatation during hypercapnia is dependent in large part on production of nitric oxide.

journal_name

Stroke

journal_title

Stroke

authors

Faraci FM,Breese KR,Heistad DD

doi

10.1161/01.str.25.8.1679

subject

Has Abstract

pub_date

1994-08-01 00:00:00

pages

1679-83

issue

8

eissn

0039-2499

issn

1524-4628

journal_volume

25

pub_type

杂志文章

相关文献

STROKE文献大全
  • Estimation of error limits for cerebral blood flow values obtained from xenon-133 clearance curves.

    abstract::I provide the theoretical basis for an error calculus for measurements of cerebral blood flow using a freely diffusible tracer substance such as xenon-133. The use of the error calculus is exemplified by a study of the effect on the error margins in measurements of gray matter blood flow from flow level, relative weig...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.20.2.205

    authors: Ryding E

    更新日期:1989-02-01 00:00:00

  • Collagen type I alpha2 (COL1A2) is the susceptible gene for intracranial aneurysms.

    abstract:BACKGROUND AND PURPOSE:The collagen alpha2(I) gene (COL1A2) on chromosome 7q22.1, a positional and functional candidate for intracranial aneurysm (IA), was extensively screened for susceptibility in Japanese IA patients. METHODS:Twenty-one single nucleotide polymorphisms (SNPs) of COL1A2 were genotyped in genomic DNA ...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.STR.0000110788.45858.DC

    authors: Yoneyama T,Kasuya H,Onda H,Akagawa H,Hashiguchi K,Nakajima T,Hori T,Inoue I

    更新日期:2004-02-01 00:00:00

  • Efficacy and safety of vorapaxar in patients with prior ischemic stroke.

    abstract:BACKGROUND AND PURPOSE:Vorapaxar is an antiplatelet agent that antagonizes thrombin-mediated activation of the protease-activated receptor-1 on platelets. We tested the efficacy and safety of vorapaxar in a prespecified analysis in the stroke subcohort from a multinational, randomized, placebo-controlled trial. METHOD...

    journal_title:Stroke

    pub_type: 杂志文章,多中心研究,随机对照试验

    doi:10.1161/STROKEAHA.111.000433

    authors: Morrow DA,Alberts MJ,Mohr JP,Ameriso SF,Bonaca MP,Goto S,Hankey GJ,Murphy SA,Scirica BM,Braunwald E,Thrombin Receptor Antagonist in Secondary Prevention of Atherothrombotic Ischemic Events–TIMI 50 Steering Committee and Investigators

    更新日期:2013-03-01 00:00:00

  • The ferret as an animal model in cerebrovascular research.

    abstract::Clinical and pathologic observations have suggested analogies between the developing nervous system of ferrets (Mustela putorius furo) and those of more traditional animal models employed in stroke research. Experimental work has demonstrated advantages of the ferret as a model of visual development. We performed in v...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.20.8.1085

    authors: Atkinson CS,Press GA,Lyden P,Katz B

    更新日期:1989-08-01 00:00:00

  • Elevation of CRABP-I in the cerebrospinal fluid of patients with Moyamoya disease.

    abstract:BACKGROUND AND PURPOSE:The etiology of moyamoya disease (MMD) remains obscure. This study was undertaken to identify specific proteins associated with the pathogenesis of MMD. METHODS:We studied cerebrospinal fluid (CSF) from 20 patients with angiographically confirmed MMD (4 boys and 16 girls; age range, 3 to 13 year...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.STR.0000100159.43123.D7

    authors: Kim SK,Yoo JI,Cho BK,Hong SJ,Kim YK,Moon JA,Kim JH,Chung YN,Wang KC

    更新日期:2003-12-01 00:00:00

  • Gene therapy for cerebral vascular disease.

    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

    authors: Heistad DD,Faraci FM

    更新日期:1996-09-01 00:00:00

  • Is the acetazolamide test valid for quantitative assessment of maximal cerebral autoregulatory vasodilation? An experimental study.

    abstract:BACKGROUND AND PURPOSE:The cerebral vasodilating effect of acetazolamide (ACZ) injection has been used as an index of the autoregulatory vasodilation (or cerebral perfusion reserve). The question of whether the ACZ test assesses the maximal autoregulatory vasodilating capacity is not definitely resolved. The effects of...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.31.2.508

    authors: Démolis P,Florence G,Thomas L,Tran Dinh YR,Giudicelli JF,Seylaz J,Alkayed NJ

    更新日期:2000-02-01 00:00:00

  • Detection of hyperacute primary intraparenchymal hemorrhage by magnetic resonance imaging.

    abstract:BACKGROUND:MRI has become increasingly used in the acute setting to manage patients with stroke. There has been concern that MRI may not be sensitive in the detection of acute intracranial hemorrhage. We assessed whether strongly susceptibility-weighted MRI would be sensitive to intraparenchymal hemorrhage in the first...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.27.12.2321

    authors: Patel MR,Edelman RR,Warach S

    更新日期:1996-12-01 00:00:00

  • Agitated confusional states in patients with right hemisphere infarctions.

    abstract::Patients with infarctions in the territory of the right middle cerebral artery (RMCA) sometimes present with an agitated confusional state. We reviewed clinical data on 46 patients with RMCA infarcts and compared neurologic findings in patients with and without agitated confusion. Neither of the two patients presentin...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.15.5.883

    authors: Schmidley JW,Messing RO

    更新日期:1984-09-01 00:00:00

  • Effects of insulin on blood, plasma, and brain glucose in hyperglycemic diabetic rats.

    abstract::This study, in biologically bred hyperglycemic diabetic rats, examined the effect of a intravenous insulin infusion (1.5 units.hr-1) on blood, plasma, and brain glucose concentrations to determine their relationship during decreasing blood and plasma glucose levels. The data were compared to saline-treated diabetic ra...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.22.4.505

    authors: Hofer RE,Lanier WL

    更新日期:1991-04-01 00:00:00

  • Risk of recurrent subarachnoid hemorrhage after complete obliteration of cerebral aneurysms.

    abstract:BACKGROUND AND PURPOSE:The neck clipping of cerebral aneurysms is a well-established treatment for subarachnoid hemorrhage (SAH) caused by aneurysmal rupture. However, it is still unclear how great a risk of recurrence patients with a successfully treated aneurysm carry over a long-term period. METHODS:Of 425 patients...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.29.12.2511

    authors: Tsutsumi K,Ueki K,Usui M,Kwak S,Kirino T

    更新日期:1998-12-01 00:00:00

  • PROACT: a phase II randomized trial of recombinant pro-urokinase by direct arterial delivery in acute middle cerebral artery stroke. PROACT Investigators. Prolyse in Acute Cerebral Thromboembolism.

    abstract:BACKGROUND AND PURPOSE:To test the safety and recanalization efficacy of intra-arterial local delivery of plasminogen activators in acute ischemic stroke, a randomized trial of recombinant pro-urokinase (rpro-UK) versus placebo was undertaken in patients with angiographically documented proximal middle cerebral artery ...

    journal_title:Stroke

    pub_type: 临床试验,杂志文章,多中心研究,随机对照试验

    doi:10.1161/01.str.29.1.4

    authors: del Zoppo GJ,Higashida RT,Furlan AJ,Pessin MS,Rowley HA,Gent M

    更新日期:1998-01-01 00:00:00

  • Patterns of alcohol intake and risk of stroke in middle-aged British men.

    abstract:BACKGROUND AND PURPOSE:The relationship between the pattern of alcohol intake and the risk of stroke is unclear, in particular the increased risk observed in abstainers and the possible protective effect of light to moderate drinking. For that reason, we examined in a large prospective study the role of alcohol consump...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.27.6.1033

    authors: Wannamethee SG,Shaper AG

    更新日期:1996-06-01 00:00:00

  • Potassium channel activators protect the N-methyl-D-aspartate-induced cerebral vascular dilation after combined hypoxia and ischemia in piglets.

    abstract:BACKGROUND AND PURPOSE:Cerebral arteriolar dilation to N-methyl-D-aspartate (NMDA) is a neuronally mediated multistep process that is sensitive to cerebral hypoxia and ischemia (H/I). We tested the hypothesis that topical pretreatment with the selective potassium channel agonists NS1619 and aprikalim preserves the vasc...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.29.4.837

    authors: Veltkamp R,Domoki F,Bari F,Busija DW

    更新日期:1998-04-01 00:00:00

  • Edema, cation content, and ATPase activity after middle cerebral artery occlusion in rats.

    abstract:BACKGROUND AND PURPOSE:Reduction of cerebral blood flow results in several acute metabolic disturbances, including a reduction in Na,K-ATPase activity. The relation between this reduction and the onset of edema is unknown, as is the effect of restoration of blood flow. Therefore, we investigated the role of decreased N...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.23.9.1331

    authors: Yang GY,Chen SF,Kinouchi H,Chan PH,Weinstein PR

    更新日期:1992-09-01 00:00:00

  • Do Clinicians Overestimate the Severity of Intracerebral Hemorrhage?

    abstract::Background and Purpose- Intracerebral hemorrhage (ICH) has a poorer prognosis than acute ischemic stroke (AIS). However, clinician perception of prognosis may influence treatment decisions and adversely affect outcome. On acute CT, the conspicuity of ICH compared with AIS may lead clinicians to overestimate severity a...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/STROKEAHA.118.022606

    authors: Tilling EJ,El Tawil S,Muir KW

    更新日期:2019-02-01 00:00:00

  • Incomplete infarct and delayed neuronal death after transient middle cerebral artery occlusion in rats.

    abstract:BACKGROUND AND PURPOSE:The clinical syndrome of transient ischemic attacks is accompanied in a significant percentage of patients by brain lesions or neuroimaging abnormalities whose structural counterparts have not been defined. The objective of this study was to analyze, in an experimental model of short-term (< 25 m...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.28.11.2303

    authors: Garcia JH,Liu KF,Ye ZR,Gutierrez JA

    更新日期:1997-11-01 00:00:00

  • Hospital-directed feedback to Emergency Medical Services improves prehospital performance.

    abstract:BACKGROUND AND PURPOSE:A potential way to improve prehospital stroke care and patient handoff is hospital-directed feedback for emergency medical service (EMS) providers. We evaluated whether a hospital-directed EMS stroke follow-up tool improved documentation of adherence to the Rhode Island state prehospital stroke p...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/STROKEAHA.114.005679

    authors: Choi B,Tsai D,McGillivray CG,Amedee C,Sarafin JA,Silver B

    更新日期:2014-07-01 00:00:00

  • Safety, feasibility, and short-term follow-up of drug-eluting stent placement in the intracranial and extracranial circulation.

    abstract:BACKGROUND AND PURPOSE:The use of bare metal stents to treat symptomatic intracranial stenosis may be associated with significant restenosis rates. The advent of drug-eluting stents (DESs) in the coronary circulation has resulted in a reduction of restenosis rates. We report our technical success rate and short-term re...

    journal_title:Stroke

    pub_type: 杂志文章,多中心研究

    doi:10.1161/01.STR.0000242481.38262.7b

    authors: Gupta R,Al-Ali F,Thomas AJ,Horowitz MB,Barrow T,Vora NA,Uchino K,Hammer MD,Wechsler LR,Jovin TG

    更新日期:2006-10-01 00:00:00

  • A novel technique for identification of doppler microembolic signals based on the coincidence method: in vitro and in vivo evaluation.

    abstract:BACKGROUND AND PURPOSE:The applicability of a novel differentiation technique in embolus detection based on the coincidence principle and using a multigate probe was evaluated in this study. METHODS:According to the coincidence method, high-intensity transients should only be classified as microembolic signals if they...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.27.4.683

    authors: Georgiadis D,Goeke J,Hill M,König M,Nabavi DG,Stögbauer F,Zunker P,Ringelstein EB

    更新日期:1996-04-01 00:00:00

  • A structured reading algorithm improves telemetric detection of atrial fibrillation after acute ischemic stroke.

    abstract:BACKGROUND AND PURPOSE:Anticoagulation is a highly effective secondary prevention in patients with cardioembolic stroke and atrial fibrillation/flutter (AF). However, the condition remains underdiagnosed, because paroxysmal AF may be missed by diagnostic tests in the acute phase. In this study, the sensitivity of AF de...

    journal_title:Stroke

    pub_type: 临床试验,杂志文章

    doi:10.1161/STROKEAHA.111.642199

    authors: Kallmünzer B,Breuer L,Hering C,Raaz-Schrauder D,Kollmar R,Huttner HB,Schwab S,Köhrmann M

    更新日期:2012-04-01 00:00:00

  • Vascular response to carbon dioxide in areas with and without diaschisis in patients with small, deep hemispheric infarction.

    abstract::The reactivity of cerebral blood vessels to changes in PaCO2 in areas of the cerebral cortex with or without diaschisis was investigated in 13 patients in a subacute or chronic stage after a small capsular infarct. A focal area of hypoperfusion (area of diaschisis) was detected in the ipsilateral sensorimotor cortex i...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.19.7.840

    authors: Takano T,Nagatsuka K,Ohnishi Y,Takamitsu Y,Matsuo H,Matsumoto M,Kimura K,Kamada T

    更新日期:1988-07-01 00:00:00

  • Spinal cord infarction: a highly reproducible stroke model.

    abstract::The study of focal central nervous system ischemia has been impeded by the lack of animal models that are both reproducible and simulate human ischemic strokes. To circumvent these problems, we have developed a rabbit spinal cord infarction model. Infarction of the caudal lumbar cord is produced by temporary occlusion...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.11.2.200

    authors: Zivin JA,DeGirolami U

    更新日期:1980-03-01 00:00:00

  • Predictive genomics of cardioembolic stroke.

    abstract::Cardioembolic stroke is a complex disease resulting from the interaction of numerous factors. Using data from Genes Affecting Stroke Risk and Outcome Study (GASROS), we show that a multivariate predictive model built using Bayesian networks is able to achieve a predictive accuracy of 86% on the fitted values as comput...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/STROKEAHA.108.533273

    authors: Ramoni RB,Himes BE,Sale MM,Furie KL,Ramoni MF

    更新日期:2009-03-01 00:00:00

  • Fibromuscular dysplasia and the brain. I. Observations on angiographic, clinical and genetic characteristics.

    abstract::The angiographic, clinical, and genetic characteristics of fibromuscular dysplasia (FMD) are reviewed in 37 patients (mean age 48 years) selected from a pool of 4000 angiograms of carotid or vertebral arteries. FMD was a neglected pathogenic factor in 28 patients with hemorrhagic or ischemic cerebral lesions. The aneu...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.13.1.46

    authors: Mettinger KL,Ericson K

    更新日期:1982-01-01 00:00:00

  • Perforating branches of the middle cerebral artery. Microanatomy and clinical significance of their intracerebral segments.

    abstract::Perforating branches of the middle cerebral arteries (MCA) were examined on the forebrain hemispheres of fourteen human brains. It was noticed that their intracerebral segments arose from the MCA main trunk, and its terminal and collateral (cortical) branches. They terminated in certain parts of the basal ganglia and ...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.16.6.1022

    authors: Marinkovic SV,Milisavljevic MM,Kovacevic MS,Stevic ZD

    更新日期:1985-11-01 00:00:00

  • Relation between serum albumin and carotid atherosclerosis: the NHLBI Family Heart Study.

    abstract:BACKGROUND AND PURPOSE:Lower concentrations of albumin have been positively related to coronary disease. The aim of this project was to assess the association between serum albumin and carotid atherosclerosis. METHODS:B-mode ultrasound was used to assess carotid plaques and intima-media thickness (IMT) among white sub...

    journal_title:Stroke

    pub_type: 杂志文章,多中心研究

    doi:10.1161/01.str.0000048675.97975.84

    authors: Djoussé L,Rothman KJ,Cupples LA,Arnett DK,Ellison RC,NHLBI Family Heart Study.

    更新日期:2003-01-01 00:00:00

  • Prognosis of young adults with ischemic stroke. A long-term follow-up study assessing recurrent vascular events and functional outcome in the Iowa Registry of Stroke in Young Adults.

    abstract:BACKGROUND AND PURPOSE:Information about the long-term prognosis of young adults with ischemic stroke is limited. Therefore, we performed a follow-up assessment of 296 patients with ischemic stroke who are enrolled in the Iowa Registry of Stroke in Young Adults. We studied young adults (age, 15 to 45 years) who were re...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.25.7.1360

    authors: Kappelle LJ,Adams HP Jr,Heffner ML,Torner JC,Gomez F,Biller J

    更新日期:1994-07-01 00:00:00

  • Topography and temporal evolution of hypoxic viable tissue identified by 18F-fluoromisonidazole positron emission tomography in humans after ischemic stroke.

    abstract:BACKGROUND AND PURPOSE:We sought to characterize the spatial and temporal evolution of human cerebral infarction. Using a novel method of quantitatively mapping the distribution of hypoxic viable tissue identified by 18F-fluoromisonidazole (18F-FMISO) PET relative to the final infarct, we determined its evolution and s...

    journal_title:Stroke

    pub_type: 临床试验,杂志文章

    doi:10.1161/01.STR.0000094422.74023.FF

    authors: Markus R,Reutens DC,Kazui S,Read S,Wright P,Chambers BR,Sachinidis JI,Tochon-Danguy HJ,Donnan GA

    更新日期:2003-11-01 00:00:00

  • Different linkage of depression to hypercortisolism early versus late after stroke. A 3-year longitudinal study.

    abstract:BACKGROUND AND PURPOSE:Using the dexamethasone suppression test, we studied the suppressibility of the cortisol axis and its clinical determinants at various time points after stroke. A major aim was to examine the dexamethasone test as a diagnostic tool for the diagnosis of major depression in stroke patients. METHOD...

    journal_title:Stroke

    pub_type: 杂志文章

    doi:10.1161/01.str.24.1.52

    authors: Aström M,Olsson T,Asplund K

    更新日期:1993-01-01 00:00:00