Abstract：
:Environmental enrichment results in increased levels of Fmrp in brain and increased dendritic complexity. The present experiment evaluated activity-dependent increases in Fmrp levels in the motor cortex in response to training on a skilled forelimb reaching task in the CGG KI mouse model of the fragile X premutation. Fmrp, Arc, and c-Fos protein levels were quantified by Western blot in the contralateral motor cortex of mice following training to reach for sucrose pellets with a non-preferred paw and compared to levels in the ipsilateral motor cortex. After training, all mice showed increases in Fmrp, Arc, and c-Fos protein levels in the contralateral compared to the ipsilateral hemisphere; however, the increase in CGG KI mice was less than wildtype mice. Increases in Fmrp and Arc proteins scaled with learning, whereas this relationship was not observed with the c-Fos levels. These data suggest the possibility that reduced levels of activity-dependent proteins associated with synaptic plasticity such as Fmrp and Arc may contribute to the neurocognitive phenotype reported in the CGG KI mice and the fragile X premutation.
journal_name
Neurobiol Learn Memjournal_title
Neurobiology of learning and memoryauthors
von Leden RE,Curley LC,Greenberg GD,Hunsaker MR,Willemsen R,Berman RFdoi
10.1016/j.nlm.2014.01.011subject
Has Abstractpub_date
2014-03-01 00:00:00pages
160-8eissn
1074-7427issn
1095-9564pii
S1074-7427(14)00012-4journal_volume
109pub_type
杂志文章abstract：:Differences in cytoarchitectural organization and connectivity distinguishes granular (or area 29, A29) and dysgranular (or area 30, A30) subdivisions of the retrosplenial cortex (RSC). Although increasing evidence supports the participation of RSC in contextual fear learning and memory, the contribution of each RSC s...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2020.107229
更新日期：2020-05-01 00:00:00
abstract：:Numerous preclinical studies show that acute cannabinoid administration impairs cognitive performance. Almost all of this research has employed cannabinoid injections, however, whereas smoking is the preferred route of cannabis administration in humans. The goal of these experiments was to systematically determine how...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2018.12.001
更新日期：2019-01-01 00:00:00
abstract：:It has been proposed that normal waking levels of acetylcholine (ACH) are important for initial memory acquisition, and that decreased ACH is critical for memory consolidation. Sleep is thought to benefit memory consolidation in part due to the predominance of low ACH levels observed during non-rapid eye movement slee...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2018.08.017
更新日期：2018-11-01 00:00:00
abstract：:The selective norepinephrine (NE) α2A-adrenoceptor (α2A-AR) agonist, guanfacine (Intuniv™), is FDA-approved for treating Attention Deficit Hyperactivity Disorder (ADHD) based on research in animals, a translational success story. Guanfacine is also widely used off-label in additional mental disorders that involve impa...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2020.107327
更新日期：2020-12-01 00:00:00
abstract：:Recent evidence suggests that an interaction of noradrenaline (NE) and cortisol (CORT) during encoding leads to greater consolidation of emotional memories. Convergent models of posttraumatic stress disorder (PTSD) suggest the release of CORT and NE lead to greater intrusive memories in PTSD. This study examined the e...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2013.11.018
更新日期：2014-07-01 00:00:00
abstract：:Both the acquisition and the extinction of memories leave short- and long-term mnemonic traces. Here, we show that in male Wistar rats, the short-term memory for a step-down inhibitory avoidance task (IA) is resistant to extinction, and that its expression does not influence retrieval or extinction of long-term memory...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2005.03.002
更新日期：2005-07-01 00:00:00
abstract：:Cognitive impairments are amongst the most debilitating deficits of schizophrenia and the best predictor of functional outcome. Schizophrenia is hypothesized to have a neurodevelopmental origin, making animal models of neurodevelopmental insult important for testing predictions that early insults will impair cognitive...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2016.07.034
更新日期：2016-10-01 00:00:00
abstract：:Goal-directed navigation is believed to be the combined product of idiothetic and allothetic orientation. Although both navigation systems require the hippocampal formation, it is probable that different circuits implement them. Examination of Long-Evans rats with dentate gyrus lesions induced by neonatal X-ray irradi...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1006/nlme.2000.3975
更新日期：2001-03-01 00:00:00
abstract：:Four experiments were conducted to examine social and emotional memory in the R6/2 transgenic mouse model of Huntington's disease. First, R6/2 mice were tested in a social transmission of food preference task where they had to acquire a preference for a flavoured food (acquisition) and subsequently to learn a preferen...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2007.10.009
更新日期：2008-05-01 00:00:00
abstract：:The hippocampus is important for memory and learning, being a brain site where initial memories are formed and where sharp wave - ripples (SWR) are found, which are responsible for mapping recent memories to long-term storage during sleep-related memory replay. While this conceptual schema is well established, specifi...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2018.04.018
更新日期：2019-04-01 00:00:00
abstract：:It is well established that D-cycloserine (DCS), a partial agonist of the NMDA receptor glycine site, enhances learning and memory processes. Although the effects of DCS have been especially elucidated in the extinction and reconsolidation of aversive behavioral paradigms or drug-related behaviors, they have not been ...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2012.11.003
更新日期：2013-02-01 00:00:00
abstract：:The purpose of this study was to explore the effects of slow-wave disruption on positive and negative word recognition in a sample of healthy control participants and those with major depressive disorder. Prior to sleep, participants learned a set of emotional and neutral words during an encoding task by responding wh...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2015.09.006
更新日期：2015-11-01 00:00:00
abstract：:The neurophysiological basis for context conditioning is conceptually problematic because neurophysiological descriptions of activity-dependent (associative) forms of neuronal plasticity uniformly assume that a specific temporal relationship between signals is necessary for memory induction. In the present experiments...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1006/nlme.1998.3890
更新日期：1999-09-01 00:00:00
abstract：:In a previous study, we found that in contrast to healthy controls, hydrocortisone administration had enhancing effects on memory in patients with borderline personality disorder (BPD). Because hydrocortisone acts on glucocorticoid receptors (GR) and mineralocorticoid receptors (MR), it is unclear which receptor media...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.nlm.2015.02.013
更新日期：2015-04-01 00:00:00
abstract：:An enormous amount of research has been aimed at identifying biological and environmental factors that are contributing to the current global obesity pandemic. The present paper reviews recent findings which suggest that obesity is attributable, at least in part, to a disruption of the Pavlovian control of energy regu...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章,评审
doi：10.1016/j.nlm.2013.07.014
更新日期：2014-02-01 00:00:00
abstract：:Previously, we demonstrated that mice in which the gene for the L-type voltage-gated calcium channel Ca(V)1.3 is deleted (Ca(V)1.3 knockout mice) exhibit an impaired ability to consolidate contextually-conditioned fear. Given that this form of Pavlovian fear conditioning is critically dependent on the basolateral comp...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2009.06.012
更新日期：2009-11-01 00:00:00
abstract：:The study of bidirectional conditioning began more than a century ago, yet it has failed to take strong root in psychology and neuroscience. We revisit this topic by exploiting E. A. Asratyan's alternating procedure of stimulus presentation, in which both forward (e.g., A → B) and backward (e.g., B → A) training trial...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2020.107211
更新日期：2020-05-01 00:00:00
abstract：:The current review provides a historical perspective on the evolution of hypothesized mechanisms for senescent neurophysiology, focused on the CA1 region of the hippocampus, and the relationship of senescent neurophysiology to impaired hippocampal-dependent memory. Senescent neurophysiology involves processes linked t...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章,评审
doi：10.1016/j.nlm.2019.107064
更新日期：2019-10-01 00:00:00
abstract：:Based on computational models of the hippocampus, it has been suggested that a possible mechanism for memory retrieval is pattern completion, wherein an autoassociative network recalls previous patterns of activity given noisy or degraded cues. However, there are few behavioral data examining pattern completion per se...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2004.08.001
更新日期：2005-01-01 00:00:00
abstract：:Although no single widely accepted animal model of PTSD has been established to date, the single prolonged stress (SPS) animal model has been partially validated as a model for PTSD. SPS rats mimic the pathophysiological abnormalities and behavioral characteristics of PTSD, such as enhanced fear response to the trauma...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2013.02.003
更新日期：2013-05-01 00:00:00
abstract：:Abstinent alcohol-dependent individuals experience an enduring sensitivity to cue-induced craving and relapse to drinking. There is considerable evidence indicating that structures within the midbrain and extended amygdala are involved in this process. Individually, the ventral tegmental area (VTA) and the bed nucleus...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2016.11.013
更新日期：2017-01-01 00:00:00
abstract：:Reinforcement learning enables organisms to adjust their behavior in order to maximize rewards. Electrophysiological recordings of dopaminergic midbrain neurons have shown that they code the difference between actual and predicted rewards, i.e., the reward prediction error, in many species. This error signal is convey...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章,评审
doi：10.1016/j.nlm.2014.05.002
更新日期：2014-10-01 00:00:00
abstract：:Most models of human and animal learning assume that learning is proportional to the discrepancy between a delivered outcome and the outcome predicted by all cues present during that trial (i.e., total error across a stimulus compound). This total error reduction (TER) view has been implemented in connectionist and ar...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章,评审
doi：10.1016/j.nlm.2013.07.018
更新日期：2014-02-01 00:00:00
abstract：:New neurons are continually produced in the adult mammalian brain from progenitor cells located in specific brain regions, including the subgranular zone (SGZ) of the dentate gyrus of the hippocampus. We hypothesized that neurogenesis occurs in the canine brain and is reduced with age. We examined neurogenesis in the ...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2007.05.001
更新日期：2007-09-01 00:00:00
abstract：:The present experiment examined whether posttraining noradrenergic activity within the basolateral complex of the amygdala (BLA) is required for mediating the facilitating effects of acutely administered glucocorticoids on memory for auditory-cue classical fear conditioning. Male Sprague-Dawley rats received five pair...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2006.03.003
更新日期：2006-11-01 00:00:00
abstract：:Growing evidence indicates that antagonists of the 5-hydroxytryptamine (serotonin) receptor(6) (5-HT(6)) improve memory and reverse amnesia although the mechanisms involved are poorly understood. Hence, in this paper RT-PCR was used to evaluate changes in mRNA expression of 5-HT(6) receptor in trained and untrained ra...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2009.08.009
更新日期：2010-01-01 00:00:00
abstract：:Previous studies showed that healthy young adults who spontaneously use caudate nucleus-dependent strategies on a virtual navigation task, have significantly lower basal levels of cortisol compared with adults who use hippocampus-dependent spatial navigation strategies. In the current paper, we assessed the relation b...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2020.107172
更新日期：2020-03-01 00:00:00
abstract：:The dynamics of learning in the Active Avoidance test was analyzed at the trials level as well as at the level of daily sessions, each comprising numerous trials. The two scales (large scale for the sessions and small scale for the trials) were demonstrated to be mutually independent. The intermediate derived scales (...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1006/nlme.1996.0009
更新日期：1996-01-01 00:00:00
abstract：:Spatial working memory and the ability of a cholinesterase inhibitor to enhance memory were assessed at 4, 10, and 16 months of ages in control and Ts65Dn mice, a partial trisomy model of Down syndrome, with possibly significant relationships to Alzheimer's disease as well. In addition, ACh release during memory testi...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1016/j.nlm.2007.05.007
更新日期：2008-02-01 00:00:00
abstract：:Intracerebral muscimol injection is widely used to inactivate discrete brain structures during behavioral tasks. However, little effort has been made to quantify the extent of muscimol diffusion. The authors report here electrophysiological and autoradiographic results obtained after muscimol injection (1 microg/micro...
journal_title：Neurobiology of learning and memory
pub_type： 杂志文章
doi：10.1006/nlme.2001.4035
更新日期：2002-07-01 00:00:00
