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https://www.readbyqxmd.com/read/29774776/memory-deficit-in-an-object-location-task-after-mild-tbi-is-associated-with-impaired-early-object-exploration-and-both-are-restored-by-branched-chain-amino-acid-dietary-therapy
#1
Rosalia Paterno, Hannah Metheny, Akiva S Cohen
The relation between traumatic brain injury (TBI) and memory dysfunction is well established, yet imprecise. Here, we investigate whether mild TBI causes a specific deficit in spatial episodic memory. Fifty-eight (29 TBI, 29 Sham) mice were run in a spatial recognition task. To determine which phase of memory might be affected in our task, we assessed rodent performance at three different delay times (3 min, 1 hour, and 24 hours). We found that sham and TBI mice performed equally well at 3 minutes, but TBI mice had significantly impaired spatial recognition memory after a delay time of one hour...
May 18, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29773978/effects-of-sevoflurane-exposure-during-mid-pregnancy-on-learning-and-memory-in-offspring-rats-beneficial-effects-of-maternal-exercise
#2
Ziyi Wu, Xingyue Li, Yi Zhang, Dongyi Tong, Lili Wang, Ping Zhao
Fetal exposure to general anesthetics may pose significant neurocognitive risks but methods to mitigate against these detrimental effects are still to be determined. We set out, therefore, to assess whether single or repeated in utero exposure to sevoflurane triggers long-term cognitive impairments in rat offspring. Since maternal exercise during pregnancy has been shown to improve cognition in offspring, we hypothesized that maternal treadmill exercise during pregnancy would protect against sevoflurane-induced neurotoxicity...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29754029/relationship-between-fmri-response-during-a-nonverbal-memory-task-and-marijuana-use-in-college-students
#3
Alecia D Dager, Madelynn R Tice, Gregory A Book, Howard Tennen, Sarah A Raskin, Carol S Austad, Rebecca M Wood, Carolyn R Fallahi, Keith A Hawkins, Godfrey D Pearlson
Marijuana (MJ) is widely used among college students, with peak use between ages 18-22. Research suggests memory dysfunction in adolescent and young adult MJ users, but the neural correlates are unclear. We examined functional magnetic resonance imaging (fMRI) response during a memory task among college students with varying degrees of MJ involvement. Participants were 64 college students, ages 18-20, who performed a visual encoding and recognition task during fMRI. MJ use was ascertained for 3 months prior to scanning; 27 individuals reported past 3-month MJ use, and 33 individuals did not...
April 26, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29749462/immunotherapy-by-targeting-of-vgkc-complex-for-seizure-control-and-prevention-of-cognitive-impairment-in-a-mouse-model-of-epilepsy
#4
Zhiliang Fan, Xiaojuan Feng, Zhigang Fan, Xingyuan Zhu, Shaohua Yin
Epilepsy is a type of refractory neurologic disorder mental disease, which is associated with cognitive impairments and memory dysfunction. However, the potential mechanisms of epilepsy are not well understood. Previous evidence has identified the voltage gated potassium channel complex (VGKC) as a target in various cohorts of patients with epilepsy. In the present study, the efficacy of an antibody against VGKC (anti‑VGKC) for the treatment of epilepsy in mice was investigated. A mouse model of lithium‑pilocarpine temporal lobe epilepsy was established and anti‑VGKC treatment was administered for 30 days...
May 9, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29739623/accelerated-long-term-forgetting-after-tia-or-minor-stroke-a-more-sensitive-measure-for-detecting-subtle-memory-dysfunction
#5
Sofie Geurts, Sieberen P van der Werf, Vincent I H Kwa, Roy P C Kessels
Cognitive changes after minor stroke or TIA have been reported, with studies describing a 'vascular' cognitive profile with spared episodic memory. Still, many patients also report memory complaints. Studies using long-term forgetting paradigms have detected memory impairment after prolonged intervals in contrast to standard delayed testing in other patient groups. This study examined whether accelerated long-term forgetting (ALF) is present in patients with minor stroke or TIA by comparing one-week delayed recall and recognition with the performance of a healthy control group...
April 12, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29725829/involvement-of-acute-neuroinflammation-in-postoperative-delirium-like-cognitive-deficits-in-rats
#6
Takashi Kawano, Daiki Yamanaka, Bun Aoyama, Hiroki Tateiwa, Marie Shigematsu-Locatelli, Atsushi Nishigaki, Hideki Iwata, Fabricio M Locatelli, Masataka Yokoyama
PURPOSE: The purpose of this study was to investigate the age-, time-, and brain region-dependent postoperative neuroinflammatory trajectory, and its association with neurocognitive outcomes in rats. METHODS: Adult and aged rats were randomly assigned to one of three groups: control, isoflurane anesthesia alone, and isoflurane anesthesia with abdominal surgery. On either postoperative day 2 (early phase) or 7 (late phase), all rats were tested for trace and context fear memory retention after acquisition of trace fear conditioning...
May 3, 2018: Journal of Anesthesia
https://www.readbyqxmd.com/read/29715489/pistacia-lentiscus-oil-attenuates-memory-dysfunction-and-decreases-levels-of-biomarkers-of-oxidative-stress-induced-by-lipopolysaccharide-in-rats
#7
Mohamed Ammari, Haifa Othman, Azhar Hajri, Mohsen Sakly, Hafedh Abdelmelek
Pistacia lentiscus L. is a well-known medicinal plant that has been used for its antioxidant, anti-inflammatory, neuroprotective, and hepatoprotective effects. However, the neuroprotective effect of Pistacia lentiscus oil (PLo) of has not been reported. The present study was designed to examine the neuroprotective and hepatoprotective effects of PLo aigainst lipopolysaccharide (LPS)-induced memory impairment and oxidative damage in rats. Twenty-four adult male Wistar rats were equally divided into three groups...
April 28, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29678935/atrophy-patterns-in-cerebral-amyloid-angiopathy-with-and-without-cortical-superficial-siderosis
#8
Joonho Kim, Han Kyu Na, Jeong-Hyeon Shin, Hee Jin Kim, Sang Won Seo, Joon-Kyung Seong, Duk L Na
OBJECTIVE: To investigate differential atrophy patterns based on the presence of cortical superficial siderosis (cSS) and the role of cSS in predicting amyloid positivity in memory clinic patients fulfilling the diagnostic criteria for probable cerebral amyloid angiopathy (CAA). METHODS: We retrospectively collected data from 44 cognitively impaired patients with probable CAA who underwent 3-dimensional, T1-weighted MRIs (cSS+, n = 27; cSS-, n = 17). Amyloid-positive patients with Alzheimer disease (AD) (n = 56) and amyloid-negative cognitively normal participants (n = 34) were recruited as controls...
April 20, 2018: Neurology
https://www.readbyqxmd.com/read/29667271/syndrome-and-outcome-of-antibody-negative-limbic-encephalitis
#9
Francesc Graus, Domingo Escudero, Laura Oleaga, Jordi Bruna, Alberto Villarejo-Galende, Jordi Ballabriga, María Inés Barceló, Francisco Gilo, Stoyan Popkirov, Pavel Stourac, Josep Dalmau
OBJECTIVE: To report the clinical characteristics of 12 patients with limbic encephalitis (LE) who were antibody-negative after a comprehensive immunological study. METHODS: Review of clinical records of 163 patients with LE. Immunohistochemistry on rat brain, cultured neurons, and cell-based assays were used to identify neuronal autoantibodies. Patients were included if 1) there was adequate clinical, CSF, and MRI information to classify the syndrome as LE, 2) MRI images were accesible for central review, and 3) serum and CSF were available and confirmed negative for neuronal antibodies...
April 18, 2018: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/29649504/tau-pathology-and-neurochemical-changes-associated-with-memory-dysfunction-in-an-optimised-murine-model-of-global-cerebral-ischaemia-a-potential-model-for-vascular-dementia
#10
Sabah Khan, Nadira Y Yuldasheva, Trevor F C Batten, Alasdair R Pickles, Katherine A B Kellett, Sikha Saha
Cerebral ischemia is known to be a major cause of death and the later development of Alzheimer's disease and vascular dementia. However, ischemia induced cellular damage that initiates these diseases remain poorly understood. This is primarily due to lack of clinically relevant models that are highly reproducible. Here, we have optimised a murine model of global cerebral ischaemia with multiple markers to determine brain pathology, neurochemistry and correlated memory deficits in these animals. Cerebral ischaemia in mice was induced by bilateral common carotid artery occlusion...
April 9, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29614645/structural-anatomical-investigation-of-long-term-memory-deficit-in-behavioral-frontotemporal-dementia
#11
Maxime Bertoux, Emma C Flanagan, Matthew Hobbs, Amparo Ruiz-Tagle, Carolina Delgado, Marcelo Miranda, Agustín Ibáñez, Andrea Slachevsky, Michael Hornberger
Although a growing body of work has shown that behavioral variant frontotemporal dementia (bvFTD) could present with severe amnesia in approximately half of cases, memory assessment is currently the clinical standard to distinguish bvFTD from Alzheimer's disease (AD). Thus, the concept of "relatively preserved episodic memory" in bvFTD remains the basis of its clinical distinction from AD and a criterion for bvFTD's diagnosis. This view is supported by the idea that bvFTD is not characterized by genuine amnesia and hippocampal degeneration, by contrast to AD...
March 24, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29559423/symptomatic-treatment-of-vascular-cognitive-impairment-stream-vci-protocol-for-a-cross-over-trial
#12
Jolien Fleur Leijenaar, Geert Jan Groeneveld, Wiesje Maria van der Flier, Philip Scheltens, Erica Surya Klaassen, Henry Chanoch Weinstein, Geert Jan Biessels, Frederik Barkhof, Niels Daniël Prins
BACKGROUND: People with vascular cognitive impairment (VCI) constitute a clinically heterogeneous group, but previous symptomatic drug trials in VCI did not take this clinical heterogeneity into account. Executive dysfunction and memory impairment are the cognitive domains that are most frequently impaired in VCI, and these impairments are likely to reflect vascular damage to specific neurotransmitter systems, which opens the possibility for targeted symptomatic treatment directed at specific neurotransmitters...
March 20, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29557544/poor-self-efficacy-for-healthcare-provider-interactions-among-individuals-with-hiv-associated-neurocognitive-disorders
#13
Erin E Morgan, Steven Paul Woods, Jennifer E Iudicello, Igor Grant, Javier Villalobos
Two factors that influence HIV health behaviors and therefore may contribute to gaps in the HIV treatment continuum are poor health-related self-efficacy and HIV-associated neurocognitive disorders (HAND). However, the relationship between HAND and self-efficacy has not been assessed. In an HIV sample, 91 individuals with intact cognition (HAND-) and 40 individuals with HAND (HAND+) were administered a measure of self-efficacy for healthcare interactions with providers. Participants with HAND had significantly lower scores on this measure, which were correlated with poorer episodic and semantic memory performance, as well as self-reported memory symptoms in daily life...
March 20, 2018: Journal of Clinical Psychology in Medical Settings
https://www.readbyqxmd.com/read/29556196/curcumin-prevents-acute-neuroinflammation-and-long-term-memory-impairment-induced-by-systemic-lipopolysaccharide-in-mice
#14
Vincenzo Sorrenti, Gabriella Contarini, Stefania Sut, Stefano Dall'Acqua, Francesca Confortin, Andrea Pagetta, Pietro Giusti, Morena Zusso
Systemic lipopolysaccharide (LPS) induces an acute inflammatory response in the central nervous system (CNS) ("neuroinflammation") characterized by altered functions of microglial cells, the major resident immune cells of the CNS, and an increased inflammatory profile that can result in long-term neuronal cell damage and severe behavioral and cognitive consequences. Curcumin, a natural compound, exerts CNS anti-inflammatory and neuroprotective functions mainly after chronic treatment. However, its effect after acute treatment has not been well investigated...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29533076/are-we-missing-dementia-with-lewy-bodies-a-case-report
#15
Deborah Wearne, Amanda Genetti, Sam Restifo, Alina Harriss
OBJECTIVES: We aim to explore the importance of early diagnosis of dementia with Lewy bodies in order to facilitate effective psychiatric management. We present a case where delayed diagnosis stemming from an atypical presentation illustrates the complex issues involved in identifying and treating this type of dementia. CONCLUSIONS: We discuss the difficulty of diagnosis of this disorder in the absence of obvious memory dysfunction or parkinsonian symptoms. We use the case to draw attention to the limited availability of certain investigations and treatment options in Australia...
March 1, 2018: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
https://www.readbyqxmd.com/read/29528701/deep-brain-stimulation-for-people-with-alzheimer-s-disease-anticipating-potential-effects-on-the-tripartite-self
#16
John Noel M Viaña, Frederic Gilbert
Memory dysfunction and cognitive impairments due to Alzheimer's disease can affect the selfhood and identity of afflicted individuals, causing distress to both people with Alzheimer's disease and their caregivers. Recently, a number of case studies and clinical trials have been conducted to determine the potential of deep brain stimulation as a therapeutic modality for people with Alzheimer's disease. Some of these studies have shown that deep brain stimulation could induce flashbacks and stabilize or even improve memory...
January 1, 2018: Dementia
https://www.readbyqxmd.com/read/29507372/depleting-adult-dentate-gyrus-neurogenesis-increases-cocaine-seeking-behavior
#17
Véronique Deroche-Gamonet, Jean-Michel Revest, Jean-François Fiancette, Eric Balado, Muriel Koehl, Noëlle Grosjean, Djoher Nora Abrous, Pier-Vincenzo Piazza
The hippocampus is the main locus for adult dentate gyrus (DG) neurogenesis. A number of studies have shown that aberrant DG neurogenesis correlates with many neuropsychiatric disorders, including drug addiction. Although clear causal relationships have been established between DG neurogenesis and memory dysfunction or mood-related disorders, evidence of the causal role of DG neurogenesis in drug-seeking behaviors has not been established. Here we assessed the role of new DG neurons in cocaine self-administration using an inducible transgenic approach that selectively depletes adult DG neurogenesis...
March 5, 2018: Molecular Psychiatry
https://www.readbyqxmd.com/read/29501041/plumbagin-ameliorates-memory-dysfunction-in-streptozotocin-induced-alzheimer-s-disease-via-activation-of-nrf2-are-pathway-and-inhibition-of-%C3%AE-secretase
#18
Kartik T Nakhate, Ashish P Bharne, Vinay Sagar Verma, Deepali N Aru, Dadasaheb M Kokare
Although plumbagin (5-hydroxy-2-methyl-1,4-naphthoquinone) protects against cerebral ischemia and spinal cord injury-induced oxidative stress and inflammation by activating the nuclear factor-erythroid 2-related factor-2 /antioxidant response element (Nrf2/ARE) pathway, its role in the amelioration of neurodegenerative diseases remains unexplored. In the present study, we investigated the effect of plumbagin on Alzheimer's disease (AD)-like condition in mice. The animals were treated intracerebroventricularly with streptozotocin (STZ; 3 mg/kg) twice, on day 1 and 3, to induce AD-like condition, and the symptoms were evaluated after 14 days...
May 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29497904/chrysophanol-relieves-cognition-deficits-and-neuronal-loss-through-inhibition-of-inflammation-in-diabetic-mice
#19
Xu Chu, Shuhu Zhou, Ran Sun, Lin Wang, Chunye Xing, Ruqing Liang, Qingxia Kong
Patients with diabetes mellitus are easy to experience diabetic encephalopathy (DE) and other cognition dysfunction, whereas the neural alterations in developing this disease are unknown yet. Chrysophanol (CHR) is one of traditional Chinese medicine which was reported to show protective effects in cognition dysfunction and inflammatory in previously studies. In this current study, whether CHR protects learning and memory dysfunctions induced by diabetes disease or not and underlying mechanisms were studied...
April 2018: Neurochemical Research
https://www.readbyqxmd.com/read/29466709/gastrointestinal-hormones-in-regulation-of-memory
#20
REVIEW
Anwesha Mandal, Kedar S Prabhavalkar, Lokesh K Bhatt
The connection between the gastrointestinal hormones and the brain has been established many years ago. This relation is termed the gut-brain axis (GBA). The GBA is a bidirectional communication which not only regulates gastrointestinal homeostasis but is also linked with higher emotional and cognitive functions. Hypothalamus plays a critical role in the regulation of energy metabolism, nutrient partitioning and control of feeding behaviors. Various gut hormones are released inside the gastrointestinal tract on food intake...
April 2018: Peptides
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