Prevention of cerebral vasospasm by nicardipine prolonged-release implants in dogs.

Abstract:

:The purpose of this study was to determine the efficacy of nicardipine prolonged-release implants for preventing vasospasm in a canine SAH model in a dose-escalating placebo-controlled blind fashion. Drug-release kinetics of copoly(lactic/glycolic acid) pellet containing nicardipine were evaluated in vitro. In vivo, 18 dogs were randomly assigned to one of three groups, i.e. placebo, low-dose (0.8 mg), or high-dose (8 mg) nicardipine. Angiography was performed, followed by right craniectomy, the induction of subarachnoid hemorrhage, and the placement of the pellets in the Sylvian fissure. On Day 7 and Day 14, the angiography was repeated. In the first four days, 61.9% of the actual nicardipine loaded was released and within 10 days, 96%. The average percent reductions of vessel diameters in the middle cerebral artery on Day 7 were 43%, 14% and 7% in the placebo, low-dose, and high-dose groups, respectively (p = 0.0319). The mean concentration of nicardipine in the clots on Day 14 was 9.7 x 10(-7) mol-1 l-1 and 5.1 x 10(-6) mol-1 l-1 in the low-dose and high-dose group, respectively. This drug delivery system prevented vasospasm in dogs significantly even at low dose, while maintaining an appropriate concentration of nicardipine in the clot adjacent to the arteries.

journal_name

Neurol Res

journal_title

Neurological research

authors

Kawashima A,Kasuya H,Sasahara A,Miyajima M,Izawa M,Hori T

doi

10.1080/01616412.2000.11740733

subject

Has Abstract

pub_date

2000-09-01 00:00:00

pages

634-41

issue

6

eissn

0161-6412

issn

1743-1328

journal_volume

22

pub_type

杂志文章
  • The temporal profile and morphologic features of neuronal death in human stroke resemble those observed in experimental forebrain ischemia: the potential role of apoptosis.

    abstract::Although neuronal death has been studied in experimental models of ischemia, the precise mechanisms regulating cell death remain unclear. Furthermore, the timing and pattern of neuronal death in human stroke has not been extensively studied. To further our understanding of ischemia-induced neuronal death, we examined ...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1998.11740520

    authors: Guglielmo MA,Chan PT,Cortez S,Stopa EG,McMillan P,Johanson CE,Epstein M,Doberstein CE

    更新日期:1998-06-01 00:00:00

  • Positron emission tomographic evaluation of histological malignancy in gliomas using oxygen-15 and fluorine-18-fluorodeoxyglucose.

    abstract::HEADTOME III, a high resolution PET, has been employed using 15O and 18F labelled pharmaceuticals to evaluate histological malignancy of gliomas preoperatively. PET study was applied on eighteen preoperative gliomas including two recurrent cases. Haemocirculatory and metabolic indices of regional cerebral blood flow (...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1986.11739749

    authors: Mineura K,Yasuda T,Kowada M,Shishido F,Ogawa T,Uemura K

    更新日期:1986-09-01 00:00:00

  • Radiation-induced apoptosis of oligodendrocytes in the adult rat optic chiasm.

    abstract:OBJECTIVES:The present study characterized glial cell injury provoked in adult rat chiasm within 24 hours after a single, high-dose irradiation of 20 Gy. METHODS:All chiasmal glial cells in a section were counted, and the percentage of TUNEL-positive glial cells exhibiting apoptotic morphology was defined as the apopt...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1179/016164105X48833

    authors: Nagayama K,Kurita H,Nakamura M,Kusuda J,Tonari A,Takayama M,Fujioka Y,Shiokawa Y

    更新日期:2005-06-01 00:00:00

  • Tissue plasminogen activator and plasminogen activator inhibitor in patients with acute ischemic stroke: relation to stroke etiology.

    abstract::Recent studies suggest that high plasma levels of tissue-type plasminogen activator (tPA) and its inhibitor (plasminogen activator inhibitor-1, PAI-1) are markers of an increased risk of atherothrombotic ischemic events such as stroke and myocardial infarction. In this prospective study, we measured tPA antigen, PAI-1...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1999.11741005

    authors: Zunker P,Schick A,Padró T,Kienast J,Phillips A,Ringelstein EB

    更新日期:1999-12-01 00:00:00

  • Neuroprotective actions of 1-aminocyclopropanecarboxylic acid (ACPC): a partial agonist at strychnine-insensitive glycine sites.

    abstract::1-Aminocyclopropanecarboxylic acid is a high affinity ligand with partial agonist properties at strychnine-insensitive glycine sites associated with the N-methyl-D-aspartate subtype of glutamate receptors. Since occupation of these sites appears required for operation of N-methyl-D-aspartate, receptor coupled cation c...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1995.11740324

    authors: Fossom LH,Von Lubitz DK,Lin RC,Skolnick P

    更新日期:1995-08-01 00:00:00

  • Is on-admission capillary blood beta-hydroxybutyrate concentration associated with the acute stroke severity and short-term functional outcome?

    abstract:OBJECTIVES:In conditions with reduced glucose levels/inability of glucose utilization, ketone bodies, especially beta-hydroxybutyrate (BHB), become a major energy source in the brain. In animal models, BHB infusion shows acute beneficial effects on the hypoxic brain. The present prospective observational study is the f...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1179/1743132813Y.0000000239

    authors: Pikija S,Trkulja V,Simundic AM,Vrcek E,Boskovic K,Bacani S

    更新日期:2013-11-01 00:00:00

  • Influence of biological factors on changes in mean cerebral blood flow velocity in normal ageing: a transcranial Doppler study.

    abstract::Analysis of the blood flow velocities in the middle cerebral artery by transcranial Doppler ultrasonography was performed in 158 healthy volunteers (aged 14-70 years; 82 men and 76 women). In a subgroup of 38 men and 21 women the end-tidal [CO2] was also measured. The influence of biological factors such as age, sex, ...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1990.11739941

    authors: Ackerstaff RG,Keunen RW,van Pelt W,Montauban van Swijndregt AD,Stijnen T

    更新日期:1990-09-01 00:00:00

  • Fetal striatal homotransplantation for Huntington's disease: first two case reports.

    abstract::Based on the successful use of fetal striatal brain grafting in the restoration of striatal function in rat and nonhuman primate models of Huntington's disease, as well as on the evidence for the clinical potential of fetal brain grafting in the treatment of Parkinson's disease, homotopic fetal striatal homotransplant...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1995.11740334

    authors: Madrazo I,Franco-Bourland RE,Castrejon H,Cuevas C,Ostrosky-Solis F

    更新日期:1995-08-01 00:00:00

  • Strategy for the treatment of inaccessible unruptured giant and large aneurysms of the internal carotid artery.

    abstract::Our goal was to clarify the optimum management of the inaccessible unruptured giant and large aneurysms of the internal carotid artery (ICA). Since 1981, we have treated 18 patients with unclippable unruptured giant or large aneurysms of the ICA. Aneurysms were classified as either intracavernous or intradural. We per...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1179/016164101101198604

    authors: Kaminogo M,Kitagawa N,Takahata H,Matsuo Y,Hayashi K,Yoshioka T,Shibata S

    更新日期:2001-06-01 00:00:00

  • B-waves in healthy persons.

    abstract::The objective of this study was to determine, whether 0.5-2/min oscillations in intracranial pressure ('B-waves') are a physiological phenomenon. In a group of 5 patients 0.5-2/min oscillations of ventricular pressure simultaneous with oscillations in the middle cerebral artery (MCA) flow velocity, as assessed by tran...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1989.11739891

    authors: Mautner-Huppert D,Haberl RL,Dirnagl U,Villringer A,Schmiedek P,Einhäupl K

    更新日期:1989-12-01 00:00:00

  • Nanoparticles and stem cells - has targeted therapy for aneurysms finally arrived?

    abstract::Until recently, endovascular management of intracranial aneurysms has focused on mechanical and hemodynamic aspects: characterizing aneurysm morphology by angiogram, mechanical obstruction by detachable coils, and flow diversion with endovascular stents. Although now common practice, these interventions only ward off ...

    journal_title:Neurological research

    pub_type: 杂志文章,评审

    doi:10.1179/1743132814Y.0000000435

    authors: Esfahani DR,Viswanathan V,Alaraj A

    更新日期:2015-03-01 00:00:00

  • Iodine-125 interstitial irradiation of virally induced dog brain tumours.

    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

    authors: Ostertag CB,Warnke P,Kleihues P,Bigner DD

    更新日期:1984-12-01 00:00:00

  • Mechanism of heat shock protein 72 induction in primary cultured astrocytes after oxygen-glucose deprivation.

    abstract::Induction of stress proteins is thought to be important in the protection of cells from a variety of environmental insults including heat, hypoxia and ischemia. The aim of this study was to compare the mechanism of induction of heat shock protein 72 (HSP72) in primary cultures of murine cortical astrocytes by heat and...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1996.11740380

    authors: Bergeron M,Mivechi NF,Giaccia AJ,Giffard RG

    更新日期:1996-02-01 00:00:00

  • Selective and prolonged MRI enhancement by Mn-TPPS in an experimental rat brain tumour with peripheral benzodiazepine receptors.

    abstract::Synthesized Mn-TPPS, a paramagnetic metalloporphyrin, is expected to be a tumour specific contrast media for magnetic resonance (MR) imaging. We investigated the enhancing characteristics of Mn-TPPS using a transplanted rat C6 glioma model with peripheral type benzodiazepine (PBD) receptors since porphyrins are though...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1994.11740260

    authors: Ikezaki K,Nomura T,Takahashi M,Fritz-Zieroth B,Inamura T,Fukui M

    更新日期:1994-10-01 00:00:00

  • Magnetic resonance imaging of the central nervous system.

    abstract::Magnetic resonance (MR) is a powerful new imaging modality which has recently become competitive with X-ray computed tomography (CT) for imaging of the central nervous system (CNS). The advantages of MR include lack of ionizing radiation and the necessity to use iodinated contrast. MR is able to image directly in the ...

    journal_title:Neurological research

    pub_type: 杂志文章,评审

    doi:10.1080/01616412.1984.11739671

    authors: Bradley WG Jr

    更新日期:1984-09-01 00:00:00

  • Post-ischemic administration of DY-9760e, a novel calmodulin antagonist, reduced infarct volume in the permanent focal ischemia model of spontaneously hypertensive rat.

    abstract::We assessed the effect of a novel calmodulin antagonist, DY-9760e (3-[2-[4-(3-chloro-2-methylphenyl)-1-piperazinyl]ethyl]-5,6-dimethoxy-1-(4-imidazolylmethyl)-1H-indazole dihydrochloride 3.5 hydrate) in a spontaneously hypertensive rat (SHR) permanent focal cerebral ischemia. In experiment I, the left middle cerebral ...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1179/016164101101198992

    authors: Takagi K,Sato T,Shirasaki Y,Narita K,Tamura A,Sano K

    更新日期:2001-09-01 00:00:00

  • Temporal and spacial changes of highly polysialylated neural cell adhesion molecule immunoreactivity in amygdala kindling development.

    abstract::To investigate the migration of neural stem cells as well as neural plastic changes in epileptic brain, spaciotemporal expression of immunoreactive highly polysialylated neural cell adhesion molecule (PSA-NCAM) was examined in amygdala kindling development of rat. The neural migration and synaptic remodeling detected ...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1179/016164103101200969

    authors: Sato K,Iwai M,Nagano I,Shoji M,Abe K

    更新日期:2003-01-01 00:00:00

  • Effects of cerebrovascular autoregulation and CO2 reactivity in experimental localized brainstem infarction.

    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

    authors: Matsumoto S,Kuwabara S,Moritake K

    更新日期:2000-03-01 00:00:00

  • Ramipril prevents extracellular matrix accumulation in cerebral microvessels.

    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

    authors: Liebetrau M,Burggraf D,Büscher C,Linz W,Hamann GF

    更新日期:2005-07-01 00:00:00

  • Patient selection for endovascular treatment of intracranial aneurysms.

    abstract::With recent advancement in medical imaging, techniques, and endovascular tools more patients are diagnosed with unruptured intracranial aneurysms. The main aim of offering aneurysm treatment is to ameliorate the risk of future aneurysm bleeding, while not posing additional risks on the patient from the treatment itsel...

    journal_title:Neurological research

    pub_type: 杂志文章,评审

    doi:10.1179/1743132814Y.0000000328

    authors: Alaraj A,Ti J,Dashti R,Aletich V

    更新日期:2014-04-01 00:00:00

  • Comparison of triphenyltetrazolium dye with light microscopic evaluation in a rabbit model of acute cerebral ischaemia.

    abstract::The present study was performed to compare brain infarct size assessment by routine histology (haematoxylin and eosin) and by 2,3,5-triphenyltetrazolium chloride staining techniques. New Zealand white rabbits were subjected to autologous clot embolization to the anterior circulation of the brain. After a study period ...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1994.11740210

    authors: Bednar MM,Fanburg JC,Anderson ML,Raymond SJ,Dooley RH,Gross CE

    更新日期:1994-04-01 00:00:00

  • Suboptimal awareness and control of hypertension increases the risk of subarachnoid hemorrhage in the community: results from the ACROSS.

    abstract:BACKGROUND:High blood pressure (BP) is a major risk factor for stroke and all of its pathological subtypes including subarachnoid hemorrhage (SAH). However, there is little evidence demonstrating whether failure to have regular BP measured could result in underestimation of people at risk for SAH. Therefore, we aimed ...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1179/1743132811Y.0000000020

    authors: Shiue I,Hankey GJ,Arima H,Anderson CS

    更新日期:2011-12-01 00:00:00

  • Relative distribution of plasma flow markers and red blood cells across BBB openings in acute cerebral ischemia.

    abstract::Acute blood-brain barrier (BBB) opening in cerebral ischemia is an often observed but seldom studied phenomenon. Increased permeability has been implicated with several consequences including exacerbating ischemic injury, leading to hemorrhagic transformation (HT) and also predictive of chronic damage and a way of del...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1179/174313206X153815

    authors: Nagaraja TN,Keenan KA,Brown SL,Fenstermacher JD,Knight RA

    更新日期:2007-01-01 00:00:00

  • The effectiveness of cortico-cortical evoked potential in detecting seizure onset zones.

    abstract::Objective The aim of the study was to evaluate the parameters for localizing the seizure onset zone in refractory epilepsy patients using cortico-cortical evoked potentials (CCEP). Methods Fifteen patients (nine females) with medically refractory partial epilepsy underwent stereo electro encephalography (SEEG) in Tsin...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.2018.1454092

    authors: Zhang N,Zhang B,Rajah GB,Geng X,Singh R,Yang Y,Yan X,Li Z,Zhou W,Ding Y,Sun W

    更新日期:2018-06-01 00:00:00

  • On the rupture of an aneurysm.

    abstract::The intracranial aneurysm, with an estimated occurrence of up to 4% in the general population, belongs among the most dangerous of cerebrovascular diseases. Although less than one-fifth of these cases results in a subarachnoid haemorrhage, the resulting disability and mortality rate is too high. More understanding is ...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1991.11739995

    authors: Duros J,Clark ME,Kufahl RH,Nadvornik P

    更新日期:1991-12-01 00:00:00

  • Transsphenoidal surgery for visual loss in patients with pituitary adenomas.

    abstract::This paper presents the results of transsphenoidal surgery in 41 consecutive patients with visual loss from pituitary adenomas. The most common pattern of loss was bitemporal hemianopia. Transsphenoidal decompression resulted in visual improvement in 78% of patients. If patients with optic atrophy and pre-operative co...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.1990.11739907

    authors: el-Azouzi M,Black PM,Candia G,Zervas NT,Panagopoulos KP

    更新日期:1990-03-01 00:00:00

  • Optical coherence tomography angiography findings of multiple sclerosis with or without optic neuritis.

    abstract::Objective: Nowadays, retinal microvascular structures can be investigated using optical coherence tomography angiography (OCTA). We aimed to evaluate the probable vascular changes in the foveal and peripapillary regions of patients with multiple sclerosis (MS).Methods: A total of 20 patients with relapsing remitting m...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.2020.1726585

    authors: Ulusoy MO,Horasanlı B,Işık-Ulusoy S

    更新日期:2020-04-01 00:00:00

  • Alzheimer's disease like pathology induced six weeks after aggregated amyloid-beta injection in rats: increased oxidative stress and impaired long-term memory with anxiety-like behavior.

    abstract:OBJECTIVES:Amyloid-beta (Aβ) peptide deposition into insoluble plaques is a pathological hallmark of Alzheimer's disease (AD), but soluble oligomeric Aβ is considered to be more potent and has been hypothesized to directly impair learning and memory. Also, evidences from some clinical studies indicated that Aβ oligomer...

    journal_title:Neurological research

    pub_type: 杂志文章

    doi:10.1080/01616412.2016.1209337

    authors: Sharma S,Verma S,Kapoor M,Saini A,Nehru B

    更新日期:2016-09-01 00:00:00

  • COMT Val158Met polymorphism and Parkinson's disease risk: a pooled analysis in different populations.

    abstract:OBJECTIVE:Many studies have analyzed the association between the catechol-O-methyltransferase (COMT) Val158Met polymorphism and Parkinson's disease (PD), which yield inconsistent results. This meta-analysis was designed to determine the possible association between the COMT Val158Met polymorphism and the risk of PD in ...

    journal_title:Neurological research

    pub_type: 杂志文章,meta分析

    doi:10.1080/01616412.2018.1564183

    authors: Wang YC,Zou YB,Xiao J,Pan CD,Jiang SD,Zheng ZJ,Yan ZR,Tang KY,Tan LM,Tang MS

    更新日期:2019-04-01 00:00:00

  • Protocol-directed weaning from mechanical ventilation in neurological patients: a randomised controlled trial and subgroup analyses based on consciousness.

    abstract:OBJECTIVES:To assess whether a weaning protocol reduces the mechanical ventilation (MV) duration compared to physician's judgement-based weaning in neurological patients and to determine whether patient consciousness influences this reduction. METHODS:A randomised controlled trial was conducted in a neurological inten...

    journal_title:Neurological research

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1179/1743132815Y.0000000092

    authors: Fan L,Su Y,Elmadhoun OA,Zhang Y,Zhang Y,Gao D,Ye H,Chen W

    更新日期:2015-11-01 00:00:00