Abstract：
:Intra-arterial administration of papaverine has been revealed to cause an increase in the blood-brain tumor barrier (BTB) permeability. The exact mechanism of papaverine opening the BTB in chemotherapy of malignant cerebral tumors, however, has not been well described. We used a rat brain glioma (C6) model for studying how papaverine modulates the permeability of BTB by monitoring the activities of the tight junction (TJ)-associated protein occludin, claudin-5 and cytoskeletal protein filamentous actin (F-actin) and whether protein kinase A (PKA) and heat shock protein 70 (HSP70) were involved in the regulation of this biological process. The levels of occludin, claudin-5 and F-actin protein in the tumor tissues were down-regulated by papaverine via immunohistochemistry, immunofluorescence assays and Western blot, corresponding to the time-dependent change of the BTB permeability. The most obvious attenuation of occludin, claudin-5 and F-actin protein was observed at 1h after papaverine perfusion, companied by a significant decrease in expression levels of PKA protein. The expression level of HSP70 in the tumor tissues was also progressively increased after papaverine perfusion and reached the maximum at 3h. The results demonstrate that the reversible openning of BTB mediated by papaverine may be associated with the functional combination between PKA and HSP70. That is, BTB opening may be attributable to the down-regulation of occludin, claudin-5 and F-actin, and cAMP/PKA signaling pathway might be involved in this process. HSP70 is likely responsible for the BTB closing, which helping the repairment of injured TJ protein and the rebuilding of the BTB.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Wang ZH,Xue YX,Liu YHdoi
10.1016/j.brainresbull.2010.08.009subject
Has Abstractpub_date
2010-11-20 00:00:00pages
367-73issue
6eissn
0361-9230issn
1873-2747pii
S0361-9230(10)00189-9journal_volume
83pub_type
杂志文章abstract：:Neutral, magnesium-stimulated sphingomyelinase and acid sphingomyelinase activities in the neurohypophysis, adenohypophysis and cerebrum of rats given 2.25% NaCl drinking water for 7 or 14 days were compared with the same enzyme activities in the tissues of control animals allowed free access to distilled drinking wat...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90028-x
更新日期：1983-05-01 00:00:00
abstract：:Aluminium is highly neurotoxic and inhibits prenatal and postnatal development of the brain in humans and experimental animals. However, the incorporation of aluminium into the brain of fetuses and sucklings during gestation and lactation has not been well clarified because aluminium lacks a suitable isotope for a tra...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(01)00509-3
更新日期：2001-05-15 00:00:00
abstract：:The antinociceptive response of mice to the amino acid L-arginine (L-ARG) has been attributed to either an opioid mechanism or a non-opioid but nitric oxide (NO)-dependent mechanism. Earlier it was reported that the mechanism of nitrous oxide-induced antinociception involved opioid components and was also dependent on...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2006.05.008
更新日期：2006-07-31 00:00:00
abstract：:Light microscopic autoradiography of [3H]quinuclidinyl benzilate binding sites was used to study the distribution of muscarinic cholinergic receptors in mouse mutants which have abnormalities affecting specific cerebellar cell types. In the normal C57BL/6J mouse, binding sites were distributed throughout the cerebella...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90174-8
更新日期：1988-02-01 00:00:00
abstract：:Intracerebroventricular (IVT) administration of renin (R) to conscious male hydrated rats induces an increase in sodium excretion. The involvement of brain dopaminergic neurons in the renal action of IVT-R was investigated. Renin-induced natriuretic action was prevented by domperidone and by inhibition of tyrosine hyd...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(96)00032-9
更新日期：1996-01-01 00:00:00
abstract：:In this study we investigated the ability of the dentate gyrus to independently generate cholinergically induced theta rhythm in vitro. Two different experiments were performed. In Experiment I, new laminar profiles of theta phase, amplitude, and current sources and sinks were constructed. In this experiment a gradual...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2009.07.003
更新日期：2009-09-28 00:00:00
abstract：:Many objective and quantitative methods have been developed to create a procedure or a device to prove, describe and quantify olfactory deficit and anosmia, especially after a head trauma. Electrophysiological testing throughout olfactoelectroencephalography (olfactoEEG) is based on brain activity desynchronisation, a...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2006.08.004
更新日期：2006-12-11 00:00:00
abstract：:Recent accounts of major depression have tended to focus on dysfunction of frontothalamic-striatal reentrant circuits as a possible source of the disorder. Evidence of frontostriatal involvement in unipolar major depression from lesion and neuropsychological studies, and functional and structural imaging studies is ex...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/s0361-9230(98)00126-9
更新日期：1998-11-01 00:00:00
abstract：:Bilateral lesions of the entorhinal cortex (E.C.) of the rat result in persistent deficits in both spontaneous and reinforced alternation. The present study analyzes the nature of this impairment. To determine if changes in exploratory activity accompanied the deficits in alternation, open field activity was measured ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(77)90023-5
更新日期：1977-01-01 00:00:00
abstract：:The possible competition of MIF-1 (Pro-Leu-Gly-NH2) with 3H-naloxone or 3H-D-Ala-D-Leu-enkephalin (DADLE) for mu and delta opiate receptors in the rat striatum was examined under conditions of varying temperatures and concentrations of sodium and GTP. MIF-1, in concentrations ranging from 10(-14) to 10(-3) M, failed t...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(81)90117-9
更新日期：1981-12-01 00:00:00
abstract：:We previously reported that a low threshold action of norepinephrine (NE) on the cerebellar circuitry is expressed as an amplification of the inhibitory action of gamma aminobutyric acid (GABA) on Purkinje cell activity. Here we examined the effects of locus coeruleus (LC) stimulation on "off-beam" inhibitions of Purk...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90211-3
更新日期：1983-06-01 00:00:00
abstract：:The periventricular tissue surrounding the anteroventral third ventricle (AV3V) is critically involved in the maintenance of normal body fluid balance and distribution. The present review examines the anatomical, neurochemical, and functional relationship of the AV3V with neural systems subserving body fluid homeostas...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/0361-9230(85)90209-6
更新日期：1985-12-01 00:00:00
abstract：:Vestibular-evoked myogenic potentials (VEMPs), elicited by acoustic stimulation, have been proposed in the assessment of the vestibulo-cervical reflex pathways. The procedure has been previously validated in several otovestibular disorders. The aim of this study was to investigate patients affected by multiple scleros...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(02)00842-0
更新日期：2002-10-15 00:00:00
abstract：:Chemical studies have demonstrated that peptides such as the encephalitogenic (EAE) peptide of myelin basic protein (MBP) and luteinizing hormone-releasing hormone (LHRH) can bind serotonin (5-hydroxytryptamine, 5-HT) in vitro. The present research was undertaken to determine whether such binding interferes with 5-HT ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(90)90176-z
更新日期：1990-12-01 00:00:00
abstract：:We examined effects of omega-conotoxin previously known as a selective blocker of N-type calcium channels, on the adenosine triphosphate (ATP)-induced currents in the rat dorsal root ganglion neurons. These neurons express at least two types of ionotropic purinoreceptors: P2X3 receptors that have very rapid desensitiz...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(01)00433-6
更新日期：2001-03-15 00:00:00
abstract：:In animal models of Fetal Alcohol Syndrome, ethanol causes a number of changes in brain development, with many of these changes being very transient. This is especially true for the process of synaptogenesis in different brain areas. Our quantitative electron microscopic study of synaptogenesis in the molecular layer ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90119-0
更新日期：1988-07-01 00:00:00
abstract：:Traumatic brain injury (TBI) is a major public-health problem for which mild TBI (MTBI) makes up majority of the cases. MTBI is a poorly-understood health problem and can persist for years manifesting into neurological and non-neurological problems that can affect functional outcome. Presently, diagnosis of MTBI is ba...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2012.01.007
更新日期：2012-03-10 00:00:00
abstract：:Neonatal rats, when spinalized on the fourteenth postnatal day, showed minimal recovery of function in their hindlimbs. Bridging the cut spinal cord with E16 fetal spinal cord tissue did not improve functional recovery. Bridging, plus treatment with GM1 ganglioside, caused a significant (p less than 0.05) improvement ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(91)90272-l
更新日期：1991-07-01 00:00:00
abstract：:Early developmental abnormalities affecting mesocortical dopamine (DA) neurons may result in later functional deficits that play a role in the emergence of psychiatric illness in adolescence/early adulthood. Little is known about the functional maturation of these neurons under either normal or abnormal conditions. In...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2009.01.012
更新日期：2009-04-29 00:00:00
abstract：:The question of whether neurons versus fibers of passage in the medial prefrontal cortex (MPC) are essential in maintaining self-stimulation of this same area of the brain was examined. Rats were prepared with electrode-guide cannulae implanted stereotaxically to rest within MPC. A micro-injection of (KA), 10 nmol/1.0...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(85)90141-8
更新日期：1985-08-01 00:00:00
abstract：:Degeneration of substantia nigra dopaminergic neurons is a key pathological change of Parkinson's disease (PD), and its motor consequences have been widely recognized. Recently, mood disorders associated with PD have begun to attract a great deal of interest, however, their pathogenesis remains unclear. PD is associat...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2014.11.006
更新日期：2015-01-01 00:00:00
abstract：:The efferent and centrifugal afferent connections of the main olfactory bulb (MOB) of the mouse were studied by orthograde and retrograde transport of wheat germ agglutinin conjugated to horseradish peroxidase (WGA-HRP). MOB projects ipsilaterally to the anterior olfactory nucleus, taenia tecta, anterior hippocampal c...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(84)90148-5
更新日期：1984-06-01 00:00:00
abstract：:Traumatic spinal cord injury (SCI) can lead to motor disturbance, sensory deficit, or autonomic dysfunction. The role of circRNAs in the pivotal physiopathological processes of SCI has been demonstrated recently. However, no similar research has been performed to explore the circRNAs involved in apoptosis after SCI. T...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.08.004
更新日期：2020-11-01 00:00:00
abstract：:Extracellular recordings were made from 467 anti-dromically identified neurosecretory neurons and 148 non-neurosecretory neurons in the paraventricular nucleus of the hypothalamus of hemispherectomized cats under pentobarbital anesthesia. Stimulation of the dorsal, median, and pontine raphe nuclei excited 31%, 26%, an...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(92)90105-7
更新日期：1992-04-01 00:00:00
abstract：:Single units were recorded bilaterally from the caudate nuclei of cats before and after 50 microliter injections of either Merlis solution or L-DOPA (200 microgram) dissolved in Merlis into the left lateral cerebral ventricle. After injection of L-DOPA, but not Merlis solution, there was a period of unit silence in bo...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(77)90083-1
更新日期：1977-07-01 00:00:00
abstract：:Recent studies demonstrate that activation of Ca(2+)-permeable N-methyl-D-aspartate (NMDA) receptors upregulates phosphorylation of mitogen-activated protein kinases (MAPKs) in heterologous cells and neurons. In cultured rat striatal neurons, the present work systematically evaluated the role of a number of protein ki...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2008.11.004
更新日期：2009-03-30 00:00:00
abstract：:The in vitro and in vivo effects of alphaxalone, a steroid anesthetic, and two physiological steroids, tetrahydrodeoxycorticosterone (THDOC) and pregnenolone sulfate (PS), on GABAA receptor function were evaluated in long-sleep (LS) and short-sleep (SS) mice. In vitro, both alphaxalone and THDOC enhanced GABAergic inh...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(92)90009-m
更新日期：1992-07-01 00:00:00
abstract：:The effects of the peptide transmitter neurotensin (NT) on the release of acetylcholine (ACh), gamma-aminobutyric acid (GABA), glutamate (Glu), aspartate (Asp), and taurine from the prefrontal cortex (PFC) of freely moving rats were studied by transversal microdialysis. Neurotensin (0.2 and 1 microM) administered loca...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2008.04.003
更新日期：2008-09-30 00:00:00
abstract：:Under standard laboratory conditions rats given access to three separate macronutrient sources compose a diet yielding 31% of their total daily calories as protein, 34% as carbohydrate, and 34% as fat. This selection pattern is dramatically altered with restored access following a 48 h fast. During the first hour of r...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(93)90305-u
更新日期：1993-01-01 00:00:00
abstract：:Hippocampal theta activity is a large amplitude, sinusoidal wave that occurs during attentive immobility and exploratory behaviour in the rat, and it is thought to be involved in memory formation. Recent reports suggest that corticotropin-releasing hormone (CRH) has pro-mnemonic effects in rodents. Because memory-enha...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(99)00039-8
更新日期：1999-04-01 00:00:00
