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Animal Cognition

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https://www.readbyqxmd.com/read/29792953/protective-effect-of-s-nitrosoglutathione-administration-against-hyperglycemia-induced-disruption-of-blood-brain-barrier-is-mediated-by-alterations-in-tight-junction-proteins-and-cell-adhesion-molecules
#1
Aanchal Aggarwal, Inderjit Singh, Rajat Sandhir
Diabetes is associated with increased blood brain barrier (BBB) permeability resulting in neurological deficits. The present study investigated the role of S-nitrosoglutathione (GSNO) on tight junction proteins and cell adhesion molecules in streptozotocin-induced diabetic mice. Diabetes was induced by intraperitoneal injection of streptozotocin (40 mg/kg body weight) for 5 days in mice. GSNO was administered daily (100 μg/kg body weight, orally) for 8 weeks after the induction of diabetes. A significant decline was observed in the cognitive ability of diabetic animals assessed using radial arm maze test...
May 21, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29792878/deoxyelephantopin-ameliorates-lipopolysaccharides-lps-induced-memory-impairments-in-rats-evidence-for-its-anti-neuroinflammatory-properties
#2
Shathiswaran N Andy, Vijayapandi Pandy, Zazali Alias, Habsah Abdul Kadir
AIM: Neuroinflammation is a critical pathogenic mechanism of most neurodegenerative disorders especially, Alzheimer's disease (AD). Lipopolysaccharides (LPS) are known to induce neuroinflammation which is evident from significant upsurge of pro-inflammatory mediators in in vitro BV-2 microglial cells and in vivo animal models. In present study, we investigated anti-neuroinflammatory properties of deoxyelephantopin (DET) isolated from Elephantopus scaber in LPS-induced neuroinflammatory rat model...
May 21, 2018: Life Sciences
https://www.readbyqxmd.com/read/29792820/hydrogel-tissue-chemistry-principles-and-applications
#3
Viviana Gradinaru, Jennifer Treweek, Kristin Overton, Karl Deisseroth
Over the past five years, a rapidly developing experimental approach has enabled high-resolution and high-content information retrieval from intact multicellular animal (metazoan) systems. New chemical and physical forms are created in the hydrogel-tissue chemistry process, and the retention and retrieval of crucial phenotypic information regarding constituent cells and molecules (and their joint interrelationships) are thereby enabled. For example, rich data sets defining both single-cell-resolution gene expression and single-cell-resolution activity during behavior can now be collected while still preserving information on three-dimensional positioning and/or brain-wide wiring of those very same neurons-even within vertebrate brains...
May 20, 2018: Annual Review of Biophysics
https://www.readbyqxmd.com/read/29789927/cellular-components-and-circuitry-of-the-presubiculum-and-its-functional-role-in-the-head-direction-system
#4
REVIEW
Jean Simonnet, Desdemona Fricker
Orientation in space is a fundamental cognitive process relying on brain-wide neuronal circuits. Many neurons in the presubiculum in the parahippocampal region encode head direction and each head direction cell selectively discharges when the animal faces a specific direction. Here, we attempt to link the current knowledge of afferent and efferent connectivity of the presubiculum to the processing of the head direction signal. We describe the cytoarchitecture of the presubicular six-layered cortex and the morphological and electrophysiological intrinsic properties of principal neurons and interneurons...
May 22, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29789379/correlated-gene-expression-and-anatomical-communication-support-synchronized-brain-activity-in-the-mouse-functional-connectome
#5
Brian D Mills, David S Grayson, Anandakumar Shunmugavel, Oscar Miranda-Dominguez, Eric Feczko, Eric Earl, Kim Neve, Damien A Fair
Cognition and behavior depend on synchronized intrinsic brain activity that is organized into functional networks across the brain. Research has investigated how anatomical connectivity both shapes and is shaped by these networks, but not how anatomical connectivity interacts with intra-areal molecular properties to drive functional connectivity. Here, we present a novel linear model to explain functional connectivity by integrating systematically obtained measurements of axonal connectivity, gene expression, and resting state functional connectivity MRI in the mouse brain...
May 22, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29787777/examination-of-the-effects-of-cannabinoid-ligands-on-decision-making-in-a-rat-gambling-task
#6
Jacqueline-Marie N Ferland, Madison Carr, Angela M Lee, Myrthe E Hoogeland, Catharine A Winstanley, Tommy Pattij
Although exposure to delta-9-tetrahydrocannabinol (THC) is perceived to be relatively harmless, mounting evidence has begun to show that it is associated with a variety of cognitive deficits, including poor decision making. THC-induced impairments in decision making are thought to be the result of cannabinoid CB1 receptor activation, and although clinical literature suggests that chronic activation via THC contributes to perturbations in decision making, acute CB1 receptor modulation has yielded mixed results...
May 19, 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29787769/elevating-integrin-linked-kinase-expression-has-rescued-hippocampal-neurogenesis-and-memory-deficits-in-an-ad-animal-model
#7
Xu-Feng Xu, You-Cui Wang, Liang Zong, Zhe-Yu Chen, Yan Li
Alterations in adult neurogenesis have been regarded as a major cause of cognitive impairment in Alzheimer's disease (AD). The underlying mechanism of neurogenesis deficiency in AD remains unclear. In this study, we reported that Integrin-linked Kinase (ILK) protein levels and phosphorylation were significantly decreased in the hippocampus of APP/PS1 mice. Increased ILK expression of dentate gyrus (DG) rescued the hippocampus-dependent neurogenesis and memory deficits in APP/PS1 mice. Moreover, we demonstrated that the effect of ILK overexpression in the hippocampus was exerted via AKT-GSK3β pathway...
May 19, 2018: Brain Research
https://www.readbyqxmd.com/read/29787539/a-concomitant-bone-fracture-delays-cognitive-recovery-from-traumatic-brain-injury
#8
Yujin Suto, Katsuhiro Nagata, Syed M Ahmed, Christina Jacovides, Kevin D Browne, John Cognetti, Maura T Weber, Victoria E Johnson, Ryan Leone, Lewis J Kaplan, Douglas H Smith, Jose L Pascual
BACKGROUND: Brain injury progression after severe TBI is associated with worsening cerebral inflammation but it is unknown how a concomitant bone fracture (BF) affects this progression. Enoxaparin (ENX) decreases penumbral leukocyte (LEU) mobilization after TBI and improves neurological recovery. We hypothesized that a concomitant BF worsens learning/memory recovery weeks after TBI and that ENX improves this recovery. METHODS: CD1 male mice underwent controlled cortical impact (CCI) or sham craniotomy with or without tibial fracture, receiving either daily ENX (0...
April 30, 2018: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29784876/chca-1-is-a-copper-regulated-ctr1-homolog-required-for-normal-development-copper-accumulation-and-copper-sensing-behavior-in-caenorhabditis-elegans
#9
Sai Yuan, Anuj Kumar Sharma, Alexandria Richart, Jaekwon Lee, Byung-Eun Kim
Copper (Cu) plays key roles in catalytic and regulatory biochemical reactions essential for normal growth, development, and health. Dietary Cu deficiencies or mutations in Cu homeostasis genes can lead to abnormal musculoskeletal development, cognitive disorders, and poor growth. In yeast and mammals, Cu is acquired through the activities of the Ctr1 family of high-affinity Cu transporters. However, the mechanisms of systemic responses to dietary or tissue-specific Cu deficiency remain unclear. Here, taking advantage of the animal model Caenorhabditis elegans for studying whole-body Cu homeostasis, we investigated the role of a C...
May 21, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29784047/memory-related-subjective-cognitive-symptoms-in-the-adult-population-prevalence-and-associated-factors-results-of-the-life-adult-study
#10
Tobias Luck, Susanne Roehr, Francisca S Rodriguez, Matthias L Schroeter, A Veronica Witte, Andreas Hinz, Anja Mehnert, Christoph Engel, Markus Loeffler, Joachim Thiery, Arno Villringer, Steffi G Riedel-Heller
BACKGROUND: Subjectively perceived memory problems (memory-related Subjective Cognitive Symptoms/SCS) can be an indicator of a pre-prodromal or prodromal stage of a neurodegenerative disease such as Alzheimer's disease. We therefore sought to provide detailed empirical information on memory-related SCS in the dementia-free adult population including information on prevalence rates, associated factors and others. METHODS: We studied 8834 participants (40-79 years) of the population-based LIFE-Adult-Study...
May 21, 2018: BMC Psychology
https://www.readbyqxmd.com/read/29783725/polyphenols-in-parkinson-s-disease-a-systematic-review-of-in-vivo-studies
#11
REVIEW
Małgorzata Kujawska, Jadwiga Jodynis-Liebert
Parkinson's disease (PD) is the second most common neurodegenerative disorder. However, therapeutic options treating only its symptoms are very disappointing. Therefore there is an ongoing search for compounds capable of tackling the multi-dimensional features of PD. Recently natural polyphenols have gained great interest as potential therapeutic agents. Herein, we have attempted to summarize results obtained in different animal models demonstrating their neuroprotective effects. The in vivo findings presented below are supported by human subject data and reports regarding the ability of polyphenols to cross the blood-brain barrier...
May 19, 2018: Nutrients
https://www.readbyqxmd.com/read/29782958/changes-in-behavioural-parameters-oxidative-stress-and-neurotrophins-in-the-brain-of-adult-offspring-induced-to-an-animal-model-of-schizophrenia-the-effects-of-fa-deficient-or-fa-supplemented-diet-during-the-neurodevelopmental-phase
#12
L Canever, T G Freire, G A Mastella, L Damázio, S Gomes, I Fachim, C Michels, G Carvalho, A K Godói, B R Peterle, F F Gava, S Valvassori Sda, J Budni, J Quevedo, A I Zugno
A deficiency of maternal folic acid (FA) can compromise the function and development of the brain, and may produce a susceptibility to diseases such as schizophrenia (SZ) in the later life of offspring. The aim of this study was to evaluate the effects of both FA deficient and FA supplemented diets during gestation and lactation on behavioural parameters, the markers of oxidative stress and neurotrophic factors in adult offspring which had been subjected to an animal model of SZ. Female mother rats (Dam's) were separated into experimental maternal groups, which began receiving a special diet (food) consisting of the AIN-93 diet, a control diet, or an FA deficient diet during the periods of pregnancy and lactation...
May 18, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29779741/bioaesthetics-the-evolution-of-aesthetic-cognition-in-humans-and-other-animals
#13
Gesche Westphal-Fitch, W Tecumseh Fitch
Bioaesthetics, an exciting new branch of aesthetics, examines the evolutionary origins of aesthetics in humans and other animals. We suggest that aesthetics is a multicomponent faculty and discuss certain traits that are shared with other species. We discuss Richard Prum's theory that aesthetic signal and audience are joined in a coevolutionary loop: one by necessity shaping the other. We discuss its implications for aesthetic phenomena as diverse as sexual selection, domestication, and cuisine. In addition to biologically evolved aesthetics, we emphasize that humans possess culturally coevolved aesthetics, which helps explain the unusual variability of aesthetic domains across human cultures...
2018: Progress in Brain Research
https://www.readbyqxmd.com/read/29778947/dissociable-contributions-of-dorsal-and-ventral-striatal-regions-on-a-rodent-cost-benefit-decision-making-task-requiring-cognitive-effort
#14
Mason M Silveira, Melanie Tremblay, Catharine A Winstanley
Cognitive effort is a ubiquitous process, yet surprisingly little is known about the brain mechanisms responsible for evaluating it. Here, we utilize the rat Cognitive Effort Task (rCET) to probe the striatum's role in deciding between options that vary in the amount of cognitive effort required for success. In the rCET, animals choose to perform either an easy trial, in which the attentional demand is low but the potential reward is small, or a difficult trial which is more attentionally demanding but can yield twice the sugar pellets...
April 24, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29778762/object-spatial-and-social-recognition-testing-in-a-single-test-paradigm
#15
Bin Lian, Jun Gao, Nan Sui, Tingyong Feng, Ming Li
Animals have the ability to process information about an object or a conspecific's physical features and location, and alter its behavior when such information is updated. In the laboratory, the object, spatial and social recognition are often studied in separate tasks, making them unsuitable to study the potential dissociations and interactions among various types of recognition memories. The present study introduced a single paradigm to detect the object and spatial recognition, and social recognition of a familiar and novel conspecific...
May 17, 2018: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29778746/betulinic-acid-a-natural-pde-inhibitor-restores-hippocampal-camp-cgmp-and-bdnf-improve-cerebral-blood-flow-and-recover-memory-deficits-in-permanent-bccao-induced-vascular-dementia-in-rats
#16
Madhu Kaundal, Saima Zameer, Abul Kalam Najmi, Suhel Parvez, Mohd Akhtar
Vascular dementia (VaD) is the second most common form of senile dementia, embraces memory deficits, neuroinflammation, executive function damage, mood and behavioral changes and abnormal cerebral blood flow. The purpose of the study was to explore the therapeutic potential of betulinic acid in bilateral common carotid artery occlusion (BCCAO) induced VaDin experimental rats.VaD was induced by BCCAO in rats and betulinic acid (10 and 15mg/kg/day po) was administered 1 week after surgery. The cerebral blood pressure of the animal was recorded before and after the treatment using Laser Doppler flow meter...
May 17, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29777902/chemical-characterization-and-cerebroprotective-effect-of-methanolic-root-extract-of-colebrookea-oppositifolia-in-rats
#17
Gollapalle Lakshminarayanashastry Viswanatha, Marikunte V Venkataranganna, Nunna Bheema Lingeswara Prasad, Shylaja Hanumanthappa
ETHNOPHARMACOLOGICAL RELEVANCE: Colebrookea oppositifolia Smith is one of the extensively used plants to treat neurological conditions such as epilepsy by the various ethnic communities in sub-Himalayan regions of India such as Bhoxa, Tharu and nomadic Gujjars. AIM OF THE STUDY: This study was conducted to evaluate the cerebroprotective effect of C. oppositifolia methanolic root (MeCO) extract in Wistar rats. MATERIALS AND METHODS: The MeCO was characterized for total phenolic content and later subjected for detailed liquid chromatography-mass spectrometry analysis...
May 16, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29777524/mercury-involvement-in-neuronal-damage-and-in-neurodegenerative-diseases
#18
REVIEW
Veronica Lanza Cariccio, Annalisa Samà, Placido Bramanti, Emanuela Mazzon
Neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and multiple sclerosis are characterized by a chronic and selective process of neuronal cell death. Although the causes of neurodegenerative diseases remain still unknown, it is now a well-established idea that more factors, such as genetic, endogenous, and environmental, are involved. Among environmental causes, the accumulation of mercury, a heavy metal considered a toxic agent, was largely studied as a probable factor involved in neurodegenerative disease course...
May 18, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29776428/evidence-of-the-impact-of-systemic-inflammation-on-neuroinflammation-from-a-non-bacterial-endotoxin-animal-model
#19
Chunxia Huang, Michael Garnet Irwin, Gordon Tin Chun Wong, Raymond Chuen Chung Chang
BACKGROUND: Systemic inflammation induces neuroinflammation and cellular changes such as tau phosphorylation to impair cognitive function, including learning and memory. This study uses a single model, laparotomy without any pathogen, to characterize these changes and their responses to anti-inflammatory treatment in the intermediate term. METHODS: In a two-part experiment, wild-type C57BL/6N mice (male, 3 month old, 25 ± 2 g) were subjected to sevoflurane anesthesia alone or to a laparotomy...
May 17, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29775630/the-basolateral-amygdala-dopaminergic-system-contributes-to-the-improving-effect-of-nicotine-on-stress-induced-memory-impairment-in-rats
#20
Elnaz Keshavarzian, Zahra Ghasemzadeh, Ameneh Rezayof
Stress seems to be an important risk factor in the beginning and continuing stages of cigarette tobacco smoking in humans. Considering that both of nicotine administration and stress exposure affect cognitive functions including memory formation, the aim of the present study was 1) to evaluate the effect of subcutaneous (s.c.) administration of nicotine on memory formation under stress and 2) to assess the possible role of the basolateral amygdala (BLA) dopamine D1 and D2 receptors in the effect of nicotine on stress-induced memory retrieval impairment...
May 15, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
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