Abstract：
:Neuronal cell death caused by pathophysiological over-activation of glutamate receptors and the subsequent CaII overloading, has been implicated in neurodegeneration after stroke, cerebral trauma and epileptic seizures. Recent findings suggest that certain progesterone metabolites (neurosteroids) such as allopregnanolone and dehydroepiandrosterone can protect neuronal cells from such insults. In the present study, murine P19 cells were induced to differentiate into postmitotic neurons expressing specific neuronal markers, including GABA(A) and NMDA receptors. Activation of NMDA receptors in P19-N neurons resulted in excitotoxic cell death, which involved suppression of the phosphorylation of the survival kinase PKB/Akt. Allopregnanolone and DHEA induced a rapid and prolonged phosphorylation of the Akt kinase and they were able to reverse the NMDA-induced suppression of the PI3-K/Akt pathway. The specificity of the neuroprotective effects of these neurosteroids was confirmed by the phosphatidylinositol 3-kinase (PI3-K) inhibitor wortmannin, as well as by the GABA(A) receptor antagonist, bicuculline. The neurotoxic effect of NMDA on P19-N neurons was directly correlated with increased CaII entry, since the addition of EGTA or BAPTA-AM, significantly suppressed the NMDA-induced decrease of phospho-Akt and subsequent neuronal death. These results suggest that neurosteroids are able to act as survival factors on P19-N neurons, promoting the activation of the PI3-K/Akt pathway through a calcium-entry dependent mechanism.
journal_name
Neurotox Resjournal_title
Neurotoxicity researchauthors
Xilouri M,Papazafiri Pdoi
10.1007/BF03033504subject
Has Abstractpub_date
2008-05-01 00:00:00pages
209-19issue
3-4eissn
1029-8428issn
1476-3524journal_volume
13pub_type
杂志文章abstract：:There has been a growing recognition of the role of neuroinflammation caused by microglia-exaggerated release of inflammatory mediators in the pathogenesis of Parkinson's disease (PD). Pituitary adenylate cyclase activating polypeptide (PACAP) is an endogenous 38 amino acid containing neuropeptide that has been shown ...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-014-9468-x
更新日期：2014-10-01 00:00:00
abstract：:This commentary serves as an introduction to the magnetic resonance imaging (MRI) technique called diffusion kurtosis imaging (DKI) employed in the study by Arab et al. in the present issue of Neurotoxicology Research. In their study, DKI is employed for longitudinal investigation of a methamphetamine intoxication mod...
journal_title：Neurotoxicity research
pub_type： 评论,杂志文章
doi：10.1007/s12640-019-00100-3
更新日期：2020-01-01 00:00:00
abstract：:The original version of this article contained mistakes, and the authors would like to correct them. Some parts of the image in Figure 5 were missing. The correct Figure 5 is shown at the next page. ...
journal_title：Neurotoxicity research
pub_type： 已发布勘误
doi：10.1007/s12640-018-9982-3
更新日期：2019-05-01 00:00:00
abstract：:Mercury is a ubiquitous contaminant, and a range of chemical species is generated by human activity and natural environmental change. Elemental mercury and its inorganic and organic compounds have different toxic properties, but all them are considered hazardous in human exposure. In an equimolecular exposure basis, o...
journal_title：Neurotoxicity research
pub_type： 杂志文章,评审
doi：10.1007/BF03033386
更新日期：2003-01-01 00:00:00
abstract：:Parkinson's disease (PD) is a neurodegenerative disorder that is hallmarked by pathological changes associated with the death of dopaminergic neurons, particularly in the extrapyramidal system (substantia nigra pars compacta, striatum) of the brain. Although the causes of slow neuronal death in PD are unknown, both ge...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-015-9556-6
更新日期：2016-04-01 00:00:00
abstract：:Aluminum-induced neuronal injury has been implicated in various neurodegenerative disorders. However, the underlying mechanism involved in this pathogenesis still remains unknown. Our present findings demonstrated that chronic aluminum exposure resulted in spatial learning impairment and significantly increased intrac...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-013-9451-y
更新日期：2014-07-01 00:00:00
abstract：:Maternal hyperhomocysteinemia is one of the common complications of pregnancy that causes offspring cognitive deficits during postnatal development. In the present work, we evaluated the effect of prenatal hyperhomocysteinemia on structural and ultrastructural organization, neuronal and glial cell number, apoptosis (c...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-020-00233-w
更新日期：2020-08-01 00:00:00
abstract：:The cytotoxic effects of methamphetamine (MA) are well established to be caused via induced oxidative stress which in turn compromises the core function of the blood-brain barrier (BBB) by reducing its ability to regulate the homeostatic environment of the brain. While most studies were conducted over a period of 24-4...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-015-9520-5
更新日期：2015-07-01 00:00:00
abstract：:Mitochondria are the major site of adenosine triphosphate (ATP) production in mammalian cells. Moreover, mitochondria produce most of the reactive oxygen species (ROS) in nucleated cells. Redox and bioenergetic abnormalities have been seen in mitochondria during the onset and progression of neurodegenerative diseases....
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-019-00044-8
更新日期：2019-10-01 00:00:00
abstract：:We present for discussion a possible molecular mechanism explaining the formation of reactive oxygen species involved in the neurodegenerative process of dopaminergic system in Parkinson's disease. This new hypothesis involves one-electron reduction of aminochrome to o-semiquinone radical, which seems to be the reacti...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/BF03033188
更新日期：2001-04-01 00:00:00
abstract：:The TaqIA1 allele of the dopamine receptor gene D2 (DRD2) has been associated with alcoholism, as well as with other addictive behaviours. The exact nature of how the presence of this allele can be a vulnerability factor in the development of alcoholism remains unclear. In this study we found that the presence in the ...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/BF03033311
更新日期：2004-01-01 00:00:00
abstract：:Chronic fatigue syndrome (CFS) is a disorder characterized by persistent and relapsing fatigue along with long-lasting and debilitating fatigue, myalgia, cognitive impairment, and many other common symptoms. The present study was conducted to explore the protective effect of hemin on CFS in experimental mice. Male alb...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-020-00231-y
更新日期：2020-08-01 00:00:00
abstract：:The mitochondrial toxin, 3-nitropropionic acid (3-NP), produces motor dysfunction and striatal atrophy in rats. However, rat strain and method of administration may contribute to variability in the deficits caused by 3-NP toxicity. To evaluate this, changes in nocturnal spontaneous locomotor activity from chronic admi...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/BF03033979
更新日期：2005-11-01 00:00:00
abstract：:In the context of our current knowledge about schizophrenia, heuristic models of psychiatric disorders may be used to test the plausibility of theories developed on the basis of new emerging biological findings, explore mechanisms of schizophrenia-like phenomena, and develop potential new treatments. In a series of st...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1080/1029842021000022089
更新日期：2002-08-01 00:00:00
abstract：:Salsolinol (1-methyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline), a metabolite of dopamine, may act as an endogenous neurotoxin and contribute to the etiology of Parkinson's disease (PD). The inverse relationship between smoking and PD prompted our previous investigation and the report of protective effects of nicot...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/BF03033901
更新日期：2007-07-01 00:00:00
abstract：:The purpose of this study was to determine whether exposure to an extremely low-frequency magnetic field (ELF-MF, 50 Hz) affects the outcome of postischemic damage in the hippocampus of Mongolian gerbils. After 10-min bilateral carotid occlusion, the gerbils were continuously exposed to ELF-MF (average magnetic induct...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-012-9333-8
更新日期：2013-01-01 00:00:00
abstract：:Organophosphates (OPs) inhibit cholinesterase and hyperactivate the acetylcholinergic nervous system in the brain, causing motor disorders (e.g., tremor and seizures). Here, we performed behavioral and immunohistochemical studies in mice and rats to investigate the tremorgenic mechanism of paraoxon, an active metaboli...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-019-0007-7
更新日期：2019-04-01 00:00:00
abstract：:Microglia are innate immune system cells which reside in the central nervous system (CNS). Resting microglia regulate the homeostasis of the CNS via phagocytic activity to clear pathogens and cell debris. Sometimes, however, to protect neurons and fight invading pathogens, resting microglia transform to an activated-f...
journal_title：Neurotoxicity research
pub_type： 杂志文章,评审
doi：10.1007/s12640-019-00030-0
更新日期：2019-07-01 00:00:00
abstract：:Salsolinol (6,7-dihydroxy-1-methyl-1,2,3,4-tetrahydroisoquinoline), widely available in many edibles, is considered to alter the function of dopaminergic neurons in the central nervous system and thus, multiple hypotheses on its either physiological and/or pathophysiological role have emerged. The aim of our work was ...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-019-00118-7
更新日期：2020-02-01 00:00:00
abstract：:The senile plaques (SPs) and neurofibrillary tangles (NFTs) are the two major pathological hallmarks of AD, which are composed of β-amyloid protein and Tau protein. So the β-amyloid protein (Aβ) and Tau oligomers (oTau) are the majority in the pathology of AD. Recently, the spreading of Aβ and oTau in the brain of AD ...
journal_title：Neurotoxicity research
pub_type： 杂志文章,评审
doi：10.1007/s12640-017-9765-2
更新日期：2017-11-01 00:00:00
abstract：:Chronic alcohol consumption may cause neurodevelopmental and neurodegenerative disorders. Alcohol neurotoxicity is associated with the production of acetaldehyde and reactive oxygen species that induce oxidative DNA damage. However, the molecular mechanisms by which ethanol disturbs the DNA damage response (DDR), resu...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-015-9554-8
更新日期：2016-01-01 00:00:00
abstract：:Neural transplantation is a promising treatment strategy that can restore the motor, sensory and cognitive functions in the rat middle cerebral artery occlusion (MCAO) model of stroke. In particular, neuronal cells derived from a human teratocarcinoma cell line, called hNT neurons or LBS neurons (clinical grade prepar...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1080/10298420290015908
更新日期：2002-03-01 00:00:00
abstract：:Neural stem cell (NSC) neurogenesis is the formation of new neurons by which the brain maintains its lifelong plasticity in response to extrinsic and intrinsic changes. Here, we show the effect of lipopolysaccharides (LPS) as an in vitro model of inflammation on NSCs to determine whether the inflammatory mediators can...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-012-9346-3
更新日期：2013-02-01 00:00:00
abstract：:The process of receptor supersensitivity (RSS) has a long history and is an epiphenomenon of neuronal denervation. Dopamine (DA) RSS (DARSS) similarly occurs after DA denervation, and this process is invoked in neuropsychiatric and neurodegenerative disorders. From studies largely over the past 25 years, much has been...
journal_title：Neurotoxicity research
pub_type： 杂志文章,评审
doi：10.1007/BF03033804
更新日期：2008-10-01 00:00:00
abstract：:Reinforcing effects of addictive drugs can be evaluated with the conditioned place preference (CPP) test which involves both the action of drugs and environmental cues. However, the encoded neural circuits and underlying signaling mechanism are not fully understood. In this study, we have used morphine-CPP model in th...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-011-9250-2
更新日期：2011-11-01 00:00:00
abstract：:U373MG cells are able to take up aminochrome that induces glutathione transferase M2-2 (GSTM2) expression in a concentration-dependent manner where 100 µM aminochrome increases GSTM2 expression by 2.1-fold (P < 0.001) at 3 h. The uptake of (3)H-aminochrome into U373MG cells was significantly reduced in the presence of...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-014-9500-1
更新日期：2015-04-01 00:00:00
abstract：:Tissue accumulation of L-2-hydroxyglutaric acid (L-2-HG) is the biochemical hallmark of L-2-hydroxyglutaric aciduria (L-2-HGA), a rare neurometabolic inherited disease characterized by neurological symptoms and brain white matter abnormalities whose pathogenesis is not yet well established. L-2-HG was intracerebrally ...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-018-9874-6
更新日期：2018-04-01 00:00:00
abstract：:Alzheimer's disease (AD) is a neurodegenerative disorder imposing great threat to an individual's cognitive capability. Mounting evidence suggests that type 2 diabetes mellitus (T2DM) and AD is closely associated with impaired insulin signalling and glucose metabolism in the brain. Member of the peroxisome proliferato...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-020-00258-1
更新日期：2020-07-18 00:00:00
abstract：:Glycyrrhizic acid (GA) is the most effective ingredient in the root of licorice, with important pharmacological effects. We investigate the effects of GA on mitochondrial function and biogenesis in the aluminum toxicity in PC12 cell line. After pretreatment of PC12 cells with different concentrations of GA (5-100 μM),...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-018-9967-2
更新日期：2019-04-01 00:00:00
abstract：:Rats lesioned shortly after birth with 6-hydroxydopamine (6-OHDA; 134 μg icv) represent a near-ideal model of severe Parkinson's disease because of the near-total destruction of nigrostriatal dopaminergic fibers. There are scarce data that in Parkinson's disease, activity of the central histaminergic system is increas...
journal_title：Neurotoxicity research
pub_type： 杂志文章
doi：10.1007/s12640-011-9251-1
更新日期：2012-02-01 00:00:00
