Abstract:
:Ketamine is a noncompetitive antagonist of the NMDA-receptors, used as a dissociative anesthetic, presently included in the category of the psychoactive substances known as "club drugs". Ketamine administration was associated with impaired working memory and increased psychopathological symptoms, but there is a lack of information regarding the effects of chronic sub-anesthetic doses. Adult Wistar rats were administered ketamine, 5 and 10 mg/kg twice daily, subcutaneously for 14 days. One week later, rats were tested in an object recognition/object location task and in the open field arena. There was altered performance in both the object recognition/location and in the open field tests by the group chronically exposed to the lower dose of ketamine. These animals displayed a decreased discrimination index (p<0.05) in the object recognition task, were unable to recognize the displacement of a familiar object and displayed decreased activity across open filed sessions. Importantly, these alterations were not observed in animals administered a higher dose of ketamine. Collectively, these results consistently show that chronic administration of ketamine in sub-anesthetic doses may lead to decreased habituation and inability to update spatial representations.
journal_name
Curr Neuropharmacoljournal_title
Current neuropharmacologyauthors
Venâncio C,Magalhães A,Antunes L,Summavielle Tdoi
10.2174/157015911795016912subject
Has Abstractpub_date
2011-03-01 00:00:00pages
251-5issue
1eissn
1570-159Xissn
1875-6190pii
CN-9-251journal_volume
9pub_type
杂志文章abstract::Malignant glioma is the most common and destructive form of primary brain tumor. Along with surgery and radiation, chemotherapy remains as the major treatment modality. The emergence of drug resistance, however, often leads to a therapeutic failure in the treatment of glioma, precluding long-term survival of the patie...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015912799362733
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:Microglia are the resident immunocompetent cells of the CNS and also constitute a unique cell type that contributes to neural network homeostasis and function. Understanding microglia cell-signaling not only will reveal their diverse functions but also will help to identify pharmacological and non-pharmacolo...
journal_title:Current neuropharmacology
pub_type: 杂志文章,评审
doi:10.2174/1570159X14666160928151546
更新日期:2017-01-01 00:00:00
abstract::Ion channels are complex transmembrane proteins that orchestrate the electrical signals necessary for normal function of excitable tissues, including the central nervous system, peripheral nerve, and both skeletal and cardiac muscle. Progress in molecular biology has allowed cloning and expression of genes that encode...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015911796557966
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND:Natural phenolic compounds in medicinal herbs and dietary plants are antioxidants which play therapeutic or preventive roles in different pathological situations, such as oxidative stress and inflammation. One of the most studied phenolic compounds in the last decade is chlorogenic acid (CGA), which is a pot...
journal_title:Current neuropharmacology
pub_type: 杂志文章,评审
doi:10.2174/1570159X17666191021111809
更新日期:2020-01-01 00:00:00
abstract::The use of neuroprotective agents for stroke is pathogenetically justified, but the translation of results of preclinical studies of neuroprotectors into clinical practice has been a noticeable failure. One of the leading reasons for these failures is the one-target mechanism of their activity. p-Tyrosol (Tyr), a biop...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/1570159X18666200507082311
更新日期:2020-05-06 00:00:00
abstract::It has been well established that there is a connection between type II diabetes (DMTII) and Alzheimer's disease (AD). In fact, the increase in AD incidence may be an emerging complication of DMTII. Both pathologies are related to estradiol (E2) exposure on the one hand, estrogen receptors (ER) are emerging as importa...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/1570159X18666201111103024
更新日期:2020-11-10 00:00:00
abstract::The 'omnipresence' of adenosine in all nervous system cells (neurons and glia) together with the intensive release of adenosine following insults, makes adenosine as a sort of 'maestro' of synapses leading to the homeostatic coordination of brain function. Besides direct actions of adenosine on the neurosecretory mech...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015909789152128
更新日期:2009-09-01 00:00:00
abstract::The acronym TBI refers to traumatic brain injury, an alteration of brain function, or an evidence of brain pathology, that is caused by an external force. TBI is estimated to become the third leading cause of permanent disability and mortality worldwide. TBI-related injuries can be classified in many ways, according t...
journal_title:Current neuropharmacology
pub_type: 杂志文章,评审
doi:10.2174/1570159X17666191113100808
更新日期:2020-01-01 00:00:00
abstract::Toxins that pass through the blood-brain barrier put neurons and glia in peril. The damage inflicted is usually a consequence of the ability of these toxic agents to induce free radical generation within cells but especially at the level of the mitochondria. The elevated production of oxygen and nitrogen-based radical...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015910792246236
更新日期:2010-09-01 00:00:00
abstract::The activity of locus coeruleus (LC) neurons has been extensively investigated in a variety of behavioural states. In fact this norepinephrine (NE)-containing nucleus modulates many physiological and pathological conditions including the sleep-waking cycle, movement disorders, mood alterations, convulsive seizures, an...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015913804999522
更新日期:2013-01-01 00:00:00
abstract::Many issues remain unresolved about antipsychotic drugs. Their therapeutic potency scales with affinity for dopamine D2 receptors, but there are indications that they act indirectly, with dopamine D1 receptors (and others) as possible ultimate targets. Classical neuroleptic drugs disinhibit striatal cholinergic intern...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015909790031229
更新日期:2009-12-01 00:00:00
abstract::Chronic pain affects billions of lives globally and is a major public health problem in the United States. However, pain management is still a challenging task due to a lack of understanding of the fundamental mechanisms of pain. In the past decades transient receptor potential (TRP) channels have been identified as m...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/1570159X113119990040
更新日期:2013-12-01 00:00:00
abstract::During the past decades Neural Stem Cells have been considered as an alternative source of cells to replace lost neurons and NSC transplantation has been indicated as a promising treatment for neurodegenerative disorders. Nevertheless, the current understanding of NSC biology suggests that, far from being mere spare p...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015911795596603
更新日期:2011-06-01 00:00:00
abstract::As acetylcholinesterase (AChE) inhibitors are an important therapeutic strategy in Alzheimer's disease, efforts are being made in search of new molecules with anti-AChE activity. The fact that naturally-occurring compounds from plants are considered to be a potential source of new inhibitors has led to the discovery o...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/1570159X11311040004
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND:Diabetic retinopathy (DR) is an important complication of diabetes and is considered one of the main causes of blindness in moderate-income and highly-developed countries. As it is a major socioeconomic problem, defining all mechanisms that may lead to DR development is of great importance. In the 21st centu...
journal_title:Current neuropharmacology
pub_type: 杂志文章,评审
doi:10.2174/1570159x14666160523144245
更新日期:2016-01-01 00:00:00
abstract::Migraine, an extremely disabling neurological disorder, has a strong genetic component. Since monogenic migraines (resulting from mutations or changes in a single gene) may help researchers discover migraine pathophysiology, transgenic mice models harboring gene mutations identified in Familial Hemiplegic Migraine (FH...
journal_title:Current neuropharmacology
pub_type: 杂志文章,评审
doi:10.2174/1570159X17666190513085013
更新日期:2019-01-01 00:00:00
abstract::MDMA (3,4-methylenedioxymethamphetamine) is reportedly severely toxic to both dopamine (DA) and serotonin neurons. MDMA significantly reduces the number of DA neurons in the substantia nigra, but not in the nucleus accumbens, indicating that MDMA causes selective destruction of DA neurons in the nigrostriatal pathway,...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015911795016985
更新日期:2011-03-01 00:00:00
abstract::It is well recognized the role of the Wnt pathway in many developmental processes such as neuronal maturation, migration, neuronal connectivity and synaptic formation. Growing evidence is also demonstrating its function in the mature brain where is associated with modulation of axonal remodeling, dendrite outgrowth, s...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/1570159X11311050001
更新日期:2013-09-01 00:00:00
abstract::Autophagy is a cellular quality control mechanism crucial for neuronal homeostasis. Defects in autophagy are critically associated with mechanisms underlying Parkinson's disease (PD), a common and debilitating neurodegenerative disorder. Autophagic dysfunction in PD can occur at several stages of the autophagy/lysosom...
journal_title:Current neuropharmacology
pub_type: 杂志文章,评审
doi:10.2174/1570159x13666151030103027
更新日期:2016-01-01 00:00:00
abstract::Bacopa monnieri, commonly known as Brahmi, has been extensively used as a neuromedicine for various disorders such as anxiety, depression and memory loss. Chemical characterization studies revealed the major active constituents of the herb as the triterpenoid saponins, bacosides. Bacoside A, the vital neuroprotective ...
journal_title:Current neuropharmacology
pub_type: 杂志文章,评审
doi:10.2174/1570159X16666180419123022
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:Congenital myasthenic syndromes (CMSs) are a heterogeneous group of neuromuscular disorders. Mutations of the nicotinic acetylcholine receptor epsilon subunit gene (CHRNE) are the most common causes of these disorders. CMSs are gaining increasing recognition by clinicians. However, pharmacological treatment ...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/1570159X18666200729092332
更新日期:2020-07-28 00:00:00
abstract:BACKGROUND:Currently, there is a great interest in the potential medical use of cannabidiol (CBD), a non-intoxicating cannabinoid. Productive pharmacological research on CBD occurred in the 1970s and intensified recently with many discoveries about the endocannabinoid system. Multiple preclinical and clinical studies l...
journal_title:Current neuropharmacology
pub_type: 杂志文章,评审
doi:10.2174/1570159X17666190603171901
更新日期:2019-01-01 00:00:00
abstract::Changes of the tumor necrosis factor-alpha (TNF-alpha) system have been shown to be involved in the development of psychiatric disorders and are additionally associated with changes in body weight as well as endocrine and metabolic changes in psychiatric patients. TNF-alpha might, for example, contribute to the pathog...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015908785777238
更新日期:2008-09-01 00:00:00
abstract::Although originally proposed as a subtype of opioid receptors, the sigma receptor is now confirmed to be a non-opioid receptor that binds diverse classes of psychotropic drugs. Sigma receptors are subdivided into two subtypes, sigma-1 and sigma-2. The sigma-1 receptor is a 25-kDa protein possessing one putative transm...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015905774322516
更新日期:2005-10-01 00:00:00
abstract::In preclinical neuropharmacological research, molecular, cell-based, and systems using animals are well established. On the tissue level the situation is less comfortable, although during the last decades some effort went into establishing such systems, i.e. using slices of the vertebrate brain together with optical a...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/1570159X12666140630190800
更新日期:2014-09-01 00:00:00
abstract::Our understanding of the movement of water through cell membranes has been greatly advanced by the discovery of a family of water-specific, membrane-channel proteins: the Aquaporins (AQPs). These proteins are present in organisms at all levels of life, and their unique permeability characteristics and distribution in ...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015910791233204
更新日期:2010-06-01 00:00:00
abstract::General anesthetics are a class of drugs that target the central nervous system and are widely used for various medical procedures. General anesthetics produce many behavioral changes required for clinical intervention, including amnesia, hypnosis, analgesia, and immobility; while they may also induce side effects lik...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/1570159X18666200227125854
更新日期:2020-01-01 00:00:00
abstract::Alzheimer's disease is one of the most progressive forms of dementia, ultimately leading to death in aged populations. The major hallmarks of Alzheimer's disease include deposition of extracellular amyloid senile plaques and intracellular neurofibrillary tangles in brain neuronal cells. Although there are classical th...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/1570159X18666200128121920
更新日期:2020-01-01 00:00:00
abstract::In the past decade, enormous efforts have been devoted to understand the genetics and molecular pathogenesis of Alzheimer's disease (AD), which has been transferred into extensive experimental approaches aimed at reversing disease progression. The trend in future AD therapy has been shifted from traditional anti-acety...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015907780866901
更新日期:2007-01-01 00:00:00
abstract::Amphetamines exert their persistent addictive effects by activating brain's reward pathways, perhaps through the release of dopamine in the nucleus accumbens (and/or in other places). On the other hand, there is a relationship between dopamine and all behavioural aspects that involve motor activity and it has been dem...
journal_title:Current neuropharmacology
pub_type: 杂志文章
doi:10.2174/157015911795017380
更新日期:2011-03-01 00:00:00