Abstract:
:Cyclic AMP is part of an endogenous mechanism that downregulates inflammatory response, and its intracellular concentration is regulated chiefly by cyclic nucleotide phosphodiesterases type 4. The goal of the present study was to determine whether phosphodiesterases 4 are involved in the inflammatory response of astrocytes mediated by Toll-like receptors. Astrocyte cultures established from newborn rat brain were challenged with lipoteichoic acid, a ligand of Toll-like receptor 2, polyinosinic-polycytidylic acid, a ligand of Toll-like receptor 3, or lipopolysaccharide, a ligand of Toll-like receptor 4. After 24 h the expression of genes encoding phosphodiesterase 4A, phosphodiesterase 4B and phosphodiesterase 4D was determined by real time reverse transcription polymerase chain reaction. The challenge of astrocytes with the ligands profoundly up-regulated expression of the phosphodiesterase 4B mRNA, while the phosphodiesterase 4A and 4D mRNA was either unaffected or downregulated. Moreover, Toll-like receptor ligation specifically up-regulated expression of the phosphodiesterase 4B2 transcriptional variant. Thus, polyinosinic-polycytidylic acid, lipopolysaccharide and lipoteichoic acid induced approximately 7-, 5- and 4-fold up-regulation of the message, respectively. Toll-like receptor ligation also led to an over 2-fold increase in the protein level of phosphodiesterase 4B2 as revealed by immunoblot analysis. The inactivation of Rho proteins by pretreatment with toxin B form C. difficile enhanced ligation-induced up-regulation of the phosphodiesterase 4B2 message by 4-9-fold. However, in spite of this increase in the message abundance, there was no increase in the protein level compared to cells challenged with the ligands alone. These results demonstrate that the phosphodiesterase 4B2 gene is an effector of Toll-like receptor signaling in astrocytes, and that its up-regulation at the protein level is controlled by complex mechanisms.
journal_name
Metab Brain Disjournal_title
Metabolic brain diseaseauthors
Borysiewicz E,Fil D,Dlaboga D,O'Donnell JM,Konat GWdoi
10.1007/s11011-009-9150-9subject
Has Abstractpub_date
2009-09-01 00:00:00pages
481-91issue
3eissn
0885-7490issn
1573-7365journal_volume
24pub_type
杂志文章abstract::This study presents further research into the spectrum of variants in genes responsible for the development of phenylketonuria (PKU) and hyperphenylalaninemia (HPA) in patients in Russia. After a study of 25 frequent variants, 293 patients (327 chromosomes without detected variants) from among 1265 probands still had ...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-019-00461-w
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abstract::Traumatic brain injury (TBI) results in severe neurological impairments without effective treatments. Inflammation appears to be an important contributor to key pathogenic events such as secondary brain injury following TBI and therefore serves as a promising target for novel therapies. We have recently demonstrated t...
journal_title:Metabolic brain disease
pub_type: 杂志文章
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abstract::Heart failure patients often manifest white matter hyperintensites on brain magnetic resonance imaging (MRI). White matter hyperintnsities have also been linked with cognitive problems in patients with heart failure. Sleep disordered breathing may contribute to structural brain changes in heart failure. The purpose of...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-018-0309-0
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abstract::Substantial evidence demonstrated that maternal dietary nutrients can significantly determine the susceptibility to developing metabolic disorders in the offspring. Therefore, we aimed to investigate the later-life effects of maternal and postweaning diets interaction on epigenetic modification of the central nervous ...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-015-9678-9
更新日期:2015-10-01 00:00:00
abstract::Effects of sertraline, haloperidol or olanzapine administration on ketamine-induced behaviours in mice were examined. The aim was to ascertain the degree of reversal of such behaviours by sertraline, and compare its effectiveness to haloperidol and olanzapine. Ten-week old mice (N = 120) were equally divided into main...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-017-0031-3
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abstract::Bilateral, symmetrical hyperintensity of the globus pallidus is observed in T1-weighted cerebral magnetic resonance images in from 52 to 100% of patients with chronic liver disease. No significant relationship exists between the presence of these cerebral changes in image signal intensity and the patients' neuropsychi...
journal_title:Metabolic brain disease
pub_type: 杂志文章,评审
doi:10.1023/a:1020680624084
更新日期:1998-12-01 00:00:00
abstract::Maple syrup urine disease (MSUD) or branched-chain alpha-keto aciduria (BCKA) is an inherited disorder caused by a deficiency of the branched-chain alpha-keto acid dehydrogenase complex (BCKAD) activity. The blockage of this pathway leads to tissue accumulation of the branched-chain amino acids (BCAA) leucine, isoleuc...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-006-9030-5
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abstract::Hepatic encephalopathy (HE) is an important cause of morbidity and mortality in patients with severe liver disease. Although the mechanisms responsible for HE remain elusive, ammonia is generally considered to be involved in its pathogenesis, and astrocytes are thought to be the principal target of ammonia neurotoxici...
journal_title:Metabolic brain disease
pub_type: 杂志文章,评审
doi:10.1023/a:1023858902184
更新日期:2003-06-01 00:00:00
abstract::Tissue methylmalonic acid (MMA) accumulation is the biochemical hallmark of methylmalonic acidemia. Clinically, the disease is characterized by progressive neurological deterioration and renal failure, whose pathophysiology is still undefined. In the present study we investigated the effect of acute MMA administration...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-013-9396-0
更新日期:2013-09-01 00:00:00
abstract::The central nervous system is one of the most vulnerable organs affected by mercury toxicity. Both acute and chronic exposure to mercury is also known to cause a variety of neurological or psychiatric disorders. Here, the neuroprotective effect of berberine (BN; 100 mg/kg bwt) on mercuric chloride (HgCl2; 0.4 mg/kg bw...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-015-9652-6
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abstract::D-Galactose (D-gal) chronic administration via intraperitoneal and subcutaneous routes has been used as a model of aging and Alzheimer disease in rodents. Intraperitoneal and subcutaneous administration of D-gal causes memory impairments, a reduction in the neurogenesis of adult mice, an increase in the levels of the ...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-017-9972-9
更新日期:2017-06-01 00:00:00
abstract::Alcohol dependence (AD) has a large heritable component. Genetic variation in genes involved in the absorption and elimination of ethanol have been associated with AD. However, some of these polymorphisms are not present in an African population. Previous studies have reported that a type of AD which is characterized ...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-014-9503-x
更新日期:2014-06-01 00:00:00
abstract::In this work, we evaluated the effects of Psidium cattleianum (Red Type) (PcRT) fruit extract on metabolic, behavioral, and neurochemical parameters in rats fed with a highly palatable diet (HPD) consisted of sucrose (65% carbohydrates being 34% from condensed milk, 8% from sucrose and 23% from starch, 25% protein and...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-018-0262-y
更新日期:2018-10-01 00:00:00
abstract::Levels of high mobility group box 1 (HMGB1), an important inflammatory mediator, are high in the serum of febrile seizure (FS) patients. However, its roles in FS and secondary epilepsy after prolonged FS are poorly understood. We demonstrate HMGB1's role in the pathogenesis of hyperthermia-induced seizures (HS) and se...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-017-0103-4
更新日期:2017-12-01 00:00:00
abstract::Transient bilateral common carotid artery occlusion (tBCCAO), followed by reperfusion, is a model of transient global hypoperfusion. In the present study we aimed to investigate the probable effects of Vanillic acid (VA) on some physiological parameters including cerebral hyperemia, blood-brain barrier (BBB) disruptio...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-018-0187-5
更新日期:2018-06-01 00:00:00
abstract::In the normal adult brain, glucose provides 90% of the energy requirements as well as substrate for nucleic acid and lipid synthesis. In the present study, effects of ethanol on glucose transporters (GLUT) and glucose utilization were examined in rat brain. Male Sprague-Dawley rats weighing 250-300 gms were given eith...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/BF02674530
更新日期:2000-09-01 00:00:00
abstract::Acute and chronic administration of Al-gluconate (12.7% Al) at the concentration of 1 mg/kg produces edema in the rat brain, as reflected by the increase in water and Na+ content. The permeability for Evans blue is also increased, which indicates the opening of the blood-brain barrier. Higher concentrations of the Al-...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/BF00996974
更新日期:1990-03-01 00:00:00
abstract::Oxidative stress is strongly implicated in the pathogenesis of stroke. Strategies using antioxidants to improve neurological functions after stroke have, thus, gained significant attention. Ocimum basilicum L. is used traditionally to treat CNS disorders. Its antioxidant capacity is well established. Our laboratory ha...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-018-0215-5
更新日期:2018-08-01 00:00:00
abstract::The effect of factors released from N2A neuroblastoma cells on the expression of myelin protein genes in glioma C6 cells, i.e., proteolipid protein (PLP) and myelin-associated glycoprotein (MAG), was studied. Both cells lines were propagated in serum-free DMEM-F10 (1:1) medium. The addition of 50% N2A conditioned medi...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/BF01000160
更新日期:1992-09-01 00:00:00
abstract::Menkes disease is a very rare X-linked copper metabolism disorder that results from an ATP7A gene mutation. With the advent of subcutaneous copper-histidine therapy, the early diagnosis of Menkes disease becomes of utmost importance for patients' prognosis. In the present study, the clinical characteristics of 12 Kore...
journal_title:Metabolic brain disease
pub_type: 杂志文章
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journal_title:Metabolic brain disease
pub_type: 杂志文章,meta分析
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journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-011-9256-8
更新日期:2011-09-01 00:00:00
abstract::Increasing evidence indicates that fetal metabolic stress may result in a variety of post-natal perturbations during brain development. The goal of the study was to determine the duration of hypoxia/ischemia that would elicit a demonstrable regional depression of metabolism in the fetal brain and further to examine se...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-006-9031-4
更新日期:2006-12-01 00:00:00
abstract::Ischemic postconditioning (PostC) conventionally refers to a series of brief blood vessel occlusions and reperfusions, which can induce an endogenous neuroprotective effect and reduce cerebral ischemia/reperfusion (I/R) injury. Depending on the site of adaptive ischemic intervention, PostC can be classified as in situ...
journal_title:Metabolic brain disease
pub_type: 杂志文章,评审
doi:10.1007/s11011-020-00562-x
更新日期:2021-01-01 00:00:00
abstract::Calotropis procera (CP; Apocynaceae) is reported to have several neuroprotective activities however it's anti-depressant activity yet to be established. Therefore, the present study was proposed to evaluate the anti-depressant activity of the standardized ethanolic extract of CP (ECP) in chronic unpredictable mild str...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-019-00471-8
更新日期:2019-12-01 00:00:00
abstract::Glutamate neurotoxicity was studied in primary neuronal cultures prepared from rat cerebral cortex and hippocampal CA1 sector. Neurons were cultivated with 5% native horse serum and then exposed to 0.1 or 1.0 mM glutamate for 5 min. Subsequently, neurons were allowed to recover for 24 hours either in the presence or i...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/BF02098880
更新日期:1994-12-01 00:00:00
abstract::We aimed to evaluate the effect of in vitro galactosaemia on acetylcholinesterase (AChE) activity in different suckling rat brain regions. Various concentrations of galactose (Gal), galactose-1-phosphate (Gal-1-P) and/or galactitol (Galtol) were preincubated for 1 h with homogenates from frontal cortex, hippocampus an...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-005-7210-3
更新日期:2005-09-01 00:00:00
abstract::Traumatic brain injury (TBI) is accompanied with enhanced matrix metalloproteinase-9 (MMP-9) activity and elevated levels of plasma fibrinogen (Fg), which is a known inflammatory agent. Activation of MMP-9 and increase in blood content of Fg (i.e. hyperfibrinogenemia, HFg) both contribute to cerebrovascular disorders ...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-014-9550-3
更新日期:2015-04-01 00:00:00
abstract::The aim of this study was to explore the neuroprotective effects of active compounds from Schisandra chinensis (Trucz.) Baill. (Magnoliaceae) against the D-galactose (D-gal)-induced neurotoxicity in rat. The Wistar rats were subcutaneously injected with D-gal (150 mg/(kg day)) for six weeks and orally administered wit...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-016-9804-3
更新日期:2016-06-01 00:00:00
abstract::Hereditary tyrosinemia type I (HT1) is caused by mutations in the fumarylacetoacetate hydrolase (FAH) gene, the template for the final enzyme in the tyrosine catabolism pathway. If left untreated this deficiency of functional FAH leads to a buildup of toxic metabolites that can cause liver disease, kidney dysfunction ...
journal_title:Metabolic brain disease
pub_type: 杂志文章
doi:10.1007/s11011-017-0071-8
更新日期:2017-12-01 00:00:00