Abstract:
:The effect of hypercholesterolemia on vascular responsiveness was studied in isolated rabbit arteries. The arteries of animals maintained on a cholesterol-rich (1%) diet for 6 months had more pronounced intimal lesion than those receiving the diet for 3 months. The aortas were more severely damaged than the carotid or basilar arteries. Segments of the arteries were mounted in organ chambers for isometric tension recording or for measurement of the endothelium-derived relaxing factor. Endothelium-independent relaxation induced by glyceryl trinitrate was not affected even in the most severely damaged arteries; endothelium-dependent relaxation in response to acetylcholine (ACh) and A23187 was progressively inhibited as the degree of fatty streak formation increased. In the carotid arteries, mean (+/- standard deviation) relaxation induced by 10(-5) M of ACh (expressed as a percentage of the maximum relaxation induced by 10(-4) M of papaverine) decreased from 87.33% +/- 6.30% in control tissues to 60.90% +/- 4.64% in vessels from animals subjected to 6 months of hypercholesterolemia (p less than 0.01); in the aortas, mean relaxation due to 10(-5) M of ACh was 85.08% +/- 8.03% in control tissues and 41.35% +/- 13.68% in hypercholesterolemic tissues (p less than 0.01). In the carotid arteries, mean relaxation induced by 10(-7) M of A23187 decreased from 95.81% +/- 3.58% in control tissues to 55.95% +/- 2.81% in hypercholesterolemic tissues (p less than 0.01); in the aortas, relaxation in response to 10(-7) M of A23187 was 73.73% +/- 4.35% in control tissues and 29.35% +/- 6.77% in hypercholesterolemic tissues (p less than 0.01). Intimal lesions were not produced in the basilar arteries even in rabbits with 12 months of hypercholesterolemia, and endothelium-dependent relaxation was preserved.
journal_name
J Neurosurgjournal_title
Journal of neurosurgeryauthors
Kanamaru K,Waga S,Tochio H,Nagatani Kdoi
10.3171/jns.1989.70.5.0793subject
Has Abstractpub_date
1989-05-01 00:00:00pages
793-8issue
5eissn
0022-3085issn
1933-0693journal_volume
70pub_type
杂志文章abstract::OBJECT Current recommendations stress the need for cognitive parameters to be integrated in the evaluation of outcomes for intracranial meningioma surgery. The aim of this prospective study was to examine neurocognitive function in meningioma patients pre- and postoperatively. METHODS Patients with skull base (anterio...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2015.6.JNS1549
更新日期:2016-06-01 00:00:00
abstract::Endolymphatic sac tumors (ELSTs) are locally invasive neoplasms that arise in the posterior petrous bone and are associated with von Hippel-Lindau (VHL) disease. These tumors cause symptoms even when microscopic in size (below the threshold for detectability on imaging studies) and can lead to symptoms such as hearing...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/JNS-07/08/0421
更新日期:2007-08-01 00:00:00
abstract::In a randomized postoperative trial, adjuvant post-irradiation chemotherapy, consisting of nitrogen mustard, vincristine, procarbazine, and prednisone (MOPP), was tested versus radiation therapy alone for newly diagnosed medulloblastoma in patients between 1 and 21 years of age. Patients treated with irradiation plus ...
journal_title:Journal of neurosurgery
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.3171/jns.1991.74.6.0905
更新日期:1991-06-01 00:00:00
abstract:OBJECT:Glutamate is important in the pathogenesis of brain damage after cerebral ischemia and traumatic brain injury. Notably, brain extracellular and cerebrospinal fluid as well as blood glutamate concentrations increase after experimental and clinical trauma. While neurons are one potential source of glutamate, plate...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2014.3.JNS132130
更新日期:2014-12-01 00:00:00
abstract::The use of surgical treatment for depressed skull fractures that are located over major venous sinuses is a matter of controversy. However, if clinical and radiological findings of sinus obliteration and related intracranial hypertension are present, surgical decompression is indicated. The authors present the case of...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1998.88.3.0598
更新日期:1998-03-01 00:00:00
abstract::The authors studied the effect of high cervical cord section on the phenomenon of autoregulation in the rhesus monkey with the hydrogen clearance method to measure focal spinal cord blood flow (SCBF). Laminectomies were performed at T7-11 and C1-2. The spinal cord was completely severed at C1-2. Under normocapnic cond...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1976.44.4.0425
更新日期:1976-04-01 00:00:00
abstract:OBJECT:The trigeminal nerve conducts both sensory and motor impulses. Separate superior and inferior motor roots typically emerge from the pons just anterosuperomedial to the entry point of the sensory root, but to date these two motor roots have not been adequately displayed on magnetic resonance (MR) images. The spec...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2004.101.3.0427
更新日期:2004-09-01 00:00:00
abstract:OBJECT:Skin closure has always been the main challenge in treating myelomeningoceles (MMCs). Most cutaneous defects can be treated with the simple undermining and primary suture of the wound edges. This is the ideal treatment, but it is not adequate in cases in which the lesions are greater than 5 cm in diameter. Numer...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/PED-07/08/098
更新日期:2007-08-01 00:00:00
abstract::Although the development of tonsillar herniation (acquired Chiari malformation) in association with lumboperitoneal (LP) shunting is well recognized, it has previously been considered rare. In order to ascertain the incidence of this complication after LP shunting, the authors undertook a retrospective study of all pa...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1993.78.4.0568
更新日期:1993-04-01 00:00:00
abstract:OBJECT:Bone morphogenetic proteins (BMPs) have been shown to have significant osteoinductive activity in numerous in vitro and in vivo assay systems, and BMP-2 and BMP-7 are currently being evaluated in human clinical studies. In the spinal region, BMPs have been shown to promote spinal arthrodesis at a higher rate tha...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/spi.2000.92.2.0191
更新日期:2000-04-01 00:00:00
abstract::In the early days of the war between Iran and Iraq, reports of the sudden deaths of soldiers who previously had survived a penetrating head injury suggested the possibility that a late complication, traumatic aneurysm (TA), could be the cause of this catastrophe. In response, the authors planned a prospective study to...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1996.84.5.0769
更新日期:1996-05-01 00:00:00
abstract::OBJECTIVE Despite persisting questions regarding its appropriateness, 30-day readmission is an increasingly common quality metric used to influence hospital compensation in the United States. However, there is currently insufficient evidence to identify which patients are at highest risk for readmission after aneurysm...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2016.5.JNS152644
更新日期:2017-06-01 00:00:00
abstract::The authors report on the case of a 15-year-old boy with Crouzon syndrome (CS) who presented with headache and facial diplegia. He had undergone several craniofacial interventions and a posterior fossa decompression for tonsillar herniation caused by the CS. A ventriculoperitoneal (VP) shunt had been inserted for hydr...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/PED-07/07/046
更新日期:2007-07-01 00:00:00
abstract::In an observational study in head-injured patients, cerebrovascular pressure transmission was investigated using a systems analysis approach whereby the blood pressure (BP) waveform was used as a measure of an input stimulus to the cerebrovascular bed (CVB) and the intracranial pressure (ICP) waveform as the response ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章,评审
doi:10.3171/jns.1990.73.6.0871
更新日期:1990-12-01 00:00:00
abstract:OBJECT:The goal of this study was to find which central nervous system (CNS) pathways are involved in volitional control over reinnervated biceps or pectoral muscles. METHODS:Intercostal nerves (ICNs) were coapted to the musculocutaneous nerve (MCN) or the medial pectoral nerve (MPN) in 23 patients with root avulsions...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1998.89.4.0568
更新日期:1998-10-01 00:00:00
abstract::The authors report on the case of a 28-year-old woman presenting with an intraosseous arteriovenous fistula (AVF) located in the left parietal bone. The fistula was formed by direct arteriovenous shunts connecting branches of the left middle meningeal and superficial temporal arteries with a parietal diploic vein. Dra...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2005.103.1.0179
更新日期:2005-07-01 00:00:00
abstract:OBJECT:Shock waves have been experimentally applied to various neurosurgical treatments including fragmentation of cerebral emboli, perforation of cyst walls or tissue, and delivery of drugs into cells. Nevertheless, the application of shock waves to clinical neurosurgery remains challenging because the threshold for s...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2007.106.4.667
更新日期:2007-04-01 00:00:00
abstract::Percutaneous transluminal angioplasty for treatment of intracerebral arterial vasospasm is now being performed in selected cases. Thirty-six vascular territories in 13 patients, ranging in age from 15 to 73 years, have been treated with a new silicone microballoon device. This balloon has allowed mechanical dilatation...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1989.71.5.0648
更新日期:1989-11-01 00:00:00
abstract:OBJECT:The goal of this study was to provide epidemiological and clinical data on the management of cavernomas of the basal ganglia and brainstem from a long-term series at one institution. METHODS:All 68 patients who were referred to the authors' department between 1992 and 2000 for deep cavernomas were evaluated by ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2003.99.1.0031
更新日期:2003-07-01 00:00:00
abstract:OBJECTIVE:Transsphenoidal surgery is advocated as the first-line management of growth hormone (GH)-secreting adenomas. Although disease control is defined by strict criteria for biochemical remission, the length of follow-up needed is not well defined in literature. In this report, the authors present their long-term r...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2019.6.JNS191187
更新日期:2019-10-11 00:00:00
abstract::Dose responses in vitro of the basilar arteries of the dog, rabbit, and man to human hemoglobin and reported. For each species, the response occurred over a range of 10(-9)M to greater than 10(-5)M hemoglobin. When compared to a maximum serotonin contraction, the relative constriction induced by 10(-5)M hemoglobin was...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1980.53.4.0486
更新日期:1980-10-01 00:00:00
abstract::Rapid growth and diffuse brain infiltration are hallmarks of malignant gliomas. The underlying molecular pathomechanisms of these tumors, however, remain to be determined. The authors present a novel glioma invasion model that allows researchers to monitor consecutively tumor cell proliferation and migration in an org...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2005.102.4.0738
更新日期:2005-04-01 00:00:00
abstract::Between 1975 and 1989, 25 children treated with myelomeningocele closure and shunting for hydrocephalus at the Children's Hospital of Pittsburgh developed progressive lower brain-stem dysfunction from their Chiari malformation. Retrospective univariate and multivariate analyses of these cases were undertaken to assess...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1992.77.6.0881
更新日期:1992-12-01 00:00:00
abstract::Two patients with fusiform aneurysms and at least one previous subarachnoid hemorrhage were treated by excision of the aneurysms and reconstruction of the arteries. The first case presented with two fusiform aneurysms, the larger of which involved the angular and the smaller one the temporal branch of the left middle ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1978.49.2.0272
更新日期:1978-08-01 00:00:00
abstract::Spinal cord infarction in association with pneumococcal meningitis has not been previously recognized. The case is reported of a 5 1/2-year-old boy who had Streptococcus pneumoniae meningitis complicated by the sudden onset of flaccid paraplegia and loss of all sensory modalities below the level of T-2. At operation, ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1981.55.1.0121
更新日期:1981-07-01 00:00:00
abstract::A 9- to 12-year follow-up review was conducted in 105 of 124 patients who were treated with chymopapain chemonucleolysis for herniated lumbar disc. The data were obtained from responses to a questionnaire. Seventy-nine patients (75.2%) reported marked improvement, six (5.7%) had slight improvement, and 20 (19.0%) had ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1985.62.5.0662
更新日期:1985-05-01 00:00:00
abstract::Forty-one consecutive patients with supratentorial primary brain tumors (38 Grade III and IV astrocytomas, one giant-cell astrocytoma, and two cases with insufficient tissue for diagnosis) were randomly allocated within 2 weeks of surgery to one of three therapeutic groups. Group 1 (15 patients) received radiation the...
journal_title:Journal of neurosurgery
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.3171/jns.1976.45.2.0129
更新日期:1976-08-01 00:00:00
abstract::This series of 228 patients with infantile non-neoplastic hydrocephalus who received either a ventriculoatrial (VA) or a ventriculoperitoneal (VP) shunt before 2 years of age was followed for an average of 7 years, and the results with the two types of shunt were compared. Mortality and infection rates were similar fo...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1979.50.2.0179
更新日期:1979-02-01 00:00:00
abstract:OBJECT:Recurrent malignant gliomas have inherent resistance to traditional chemotherapy. Novel therapies target specific molecular mechanisms involved in abnormal signaling and resistance to apoptosis. The proteasome is a key regulator of multiple cellular functions, and its inhibition in malignant astrocytic lines cau...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2013.7.JNS1323
更新日期:2013-12-01 00:00:00
abstract::Moment-to-moment control of blood pressure is important in the management of the neurosurgical patient. The ideal agent to control blood pressure or induce hypotension should be non-toxic, maintain cerebrovascular autoregulation, and not alter cardiac output or change intracranial pressure. Intravenous nitroglycerin h...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1978.48.5.0704
更新日期:1978-05-01 00:00:00