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https://www.readbyqxmd.com/read/28330787/acute-impact-of-caffeinated-alcoholic-beverages-on-cognition-a-systematic-review
#1
REVIEW
Laurence Lalanne, Pierre-Eric Lutz, François Paille
INTRODUCTION: Energy drinks are popular beverages that are supposed to counteract sleepiness, increase energy, maintain alertness and reduce symptoms of hangover. Cognitive enhancing seems to be related to many compounds such as caffeine, taurine and vitamins. Currently, users mostly combine psychostimulant effects of energy drinks to counteract sedative effects of alcohol. However, recent literature suggests that this combination conducts to feel less intoxicated but still impaired. The goal of the present article is to review cognitive impact and subjective awareness in case of caffeinated alcoholic beverage (CAB) intoxication...
March 19, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28302742/neurodevelopmental-abnormalities-and-congenital-heart-disease-insights-into-altered-brain-maturation
#2
Paul D Morton, Nobuyuki Ishibashi, Richard A Jonas
In the past 2 decades, it has become evident that individuals born with congenital heart disease (CHD) are at risk of developing life-long neurological deficits. Multifactorial risk factors contributing to neurodevelopmental abnormalities associated with CHD have been identified; however, the underlying causes remain largely unknown, and efforts to address this issue have only recently begun. There has been a dramatic shift in focus from newly acquired brain injuries associated with corrective and palliative heart surgery to antenatal and preoperative factors governing altered brain maturation in CHD...
March 17, 2017: Circulation Research
https://www.readbyqxmd.com/read/28270754/interaction-effect-of-social-isolation-and-high-dose-corticosteroid-on-neurogenesis-and-emotional-behavior
#3
Jackie N-M Chan, Jada C-D Lee, Sylvia S P Lee, Katy K Y Hui, Alan H L Chan, Timothy K-H Fung, Dalinda I Sánchez-Vidaña, Benson W-M Lau, Shirley P-C Ngai
Hypercortisolemia is one of the clinical features found in depressed patients. This clinical feature has been mimicked in animal studies via application of exogenous corticosterone (CORT). Previous studies suggested that CORT can induce behavioral disturbance in anxious-depressive like behavior, which is associated with suppressed neurogenesis. Hippocampal neurogenesis plays an important role in adult cognitive and behavioral regulation. Its suppression may thus lead to neuropsychiatric disorders. Similar to the effects of CORT on the animals' depression-like behaviors and neurogenesis, social deprivation has been regarded as one factor that predicts poor prognosis in depression...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28256073/aging-impairs-dendrite-morphogenesis-of-newborn-neurons-and-is-rescued-by-7-8-dihydroxyflavone
#4
Xiaoting Wang, Jennifer Lynn Romine, Xiang Gao, Jinhui Chen
All aging individuals will develop some degree of decline in cognitive capacity as time progresses. The molecular and cellular mechanisms leading to age-related cognitive decline are still not fully understood. Through our previous research, we discovered that active neural progenitor cells selectively become more quiescent in response to aging, thus leading to the decline of neurogenesis in the aged hippocampus. Here, we further find that aging impaired dendrite development of newborn neurons. Currently, no effective approach is available to increase neurogenesis or promote dendrite development of newborn neurons in the aging brain...
April 2017: Aging Cell
https://www.readbyqxmd.com/read/28219751/evidence-for-a-role-of-corticopetal-noradrenergic-systems-in-the-development-of-executive-function
#5
David J Mokler, Christine E Miller, Jill A McGaughy
Adolescence is a period during which many aspects of executive function are maturing. Much of the literature has focused on discrepancies between sub-cortical and cortical development that is hypothesized to lead to over-processing of reinforcement related stimuli unchecked by fully matured response inhibition. Specifically, maturation of sub-cortical dopaminergic systems that terminate in the nucleus accumbens has been suggested to occur prior to the full maturation of corticopetal dopaminergic systems. However, converging evidence supports the hypothesis that many aspects of cognitive control are critically linked to cortical noradrenergic systems, that the effectiveness of drugs used to treat disorders of executive function, e...
February 17, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28193596/vegf-regulates-hippocampal-neurogenesis-and-reverses-cognitive-deficits-in-immature-rats-after-status-epilepticus-through-the-vegf-r2-signaling-pathway
#6
Wei Han, Xiaojie Song, Rong He, Tianyi Li, Li Cheng, Lingling Xie, Hengsheng Chen, Li Jiang
Epilepsy is the most common chronic disease in children, who exhibit a higher risk for status epilepticus (SE) than adults. Hippocampal neurogenesis is altered by epilepsy, particularly in the immature brain, which may influence cognitive development. Vascular endothelial growth factor (VEGF) represents an attractive target to modulate brain function at the neurovascular interface and is a double-edged sword in seizures. We used the lithium-pilocarpine-induced epilepsy model in immature Sprague-Dawley rats to study the effects of VEGF on hippocampal neurogenesis in the acute phase and on long-term cognitive behaviors in immature rats following status epilepticus (SE)...
February 10, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28138095/long-lasting-memory-deficits-in-mice-withdrawn-from-cocaine-are-concomitant-to-neuroadaptations-in-hippocampal-basal-activity-gabaergic-interneurons-and-adult-neurogenesis
#7
David Ladrón de Guevara-Miranda, Carmelo Millón, Cristina Rosell-Valle, Mercedes Pérez-Fernández, Michele Missiroli, Antonia Serrano, Francisco J Pavón, Fernando Rodríguez de Fonseca, Magdalena Martínez-Losa, Manuel Álvarez-Dolado, Luis J Santín, Estela Castilla-Ortega
The cocaine addiction disorder is notably aggravated by concomitant cognitive and emotional pathology that impedes recovery. We studied whether a persistent cognitive/emotional dysregulation in mice withdrawn from cocaine holds a neurobiological correlate within the hippocampus, a limbic region with a key role in anxiety and memory but that has been scarcely investigated in cocaine addiction research. Mice were submitted to a chronic cocaine (20 mg/kg/day for 12 days) or vehicle treatment followed by 44 drug-free days...
January 30, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28131877/carbon-monoxide-incompletely-prevents-isoflurane-induced-defects-in-murine-neurodevelopment
#8
Li Wang, Aili Wang, William W Supplee, Kayla Koffler, Ying Cheng, Zenaide M N Quezado, Richard J Levy
BACKGROUND: Commonly used anesthetics have been shown to disrupt neurodevelopment in preclinical models.It has been proposed that such anesthesia-induced neurotoxicity is mediated by apoptotic neurodegeneration in the immature brain.Low dose carbon monoxide (CO) exerts cytoprotective properties and we have previously demonstrated that CO inhibits isoflurane-induced apoptosis in the developing murine brain.Here we utilized anti-apoptotic concentrations of CO to delineate the role of apoptotic neurodegeneration in anesthesia-induced neurotoxicity by assessing the effect of CO on isoflurane-induced defects in neurodevelopment...
January 25, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28113197/neurogenesis-enhances-response-specificity-to-spatial-pattern-stimulation-in-hippocampal-cultures
#9
Yukimi Tanaka, Takuya Isomura, Kenta Shimba, Kiyoshi Kotani, Yasuhiko Jimbo
OBJECTIVE: Adult neurogenesis in the hippocampus facilitates cognitive functions such as pattern separation in mammals. However, it remains unclear how newborn neurons mediate changes in neural networks to enhance pattern separation ability. Here, we developed an in vitro model of adult neurogenesis using rat hippocampal cultures in order to investigate whether newborn neurons can be directly incorporated into neural networks related to pattern separation to produce functional improvements...
December 14, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28076846/effect-of-trp53-gene-deficiency-on-brain-injury-after-neonatal-hypoxia-ischemia
#10
Ana A Baburamani, Kristina S Sobotka, Regina Vontell, Carina Mallard, Veena G Supramaniam, Claire Thornton, Henrik Hagberg
Hypoxia-ischemia (HI) can result in permanent life-long injuries such as motor and cognitive deficits. In response to cellular stressors such as hypoxia, tumor suppressor protein p53 is activated, potently initiating apoptosis and promoting Bax-dependent mitochondrial outer membrane permeabilization. The aim of this study was to investigate the effect of Trp53 genetic inhibition on injury development in the immature brain following HI. HI (50 min or 60 min) was induced at postnatal day 9 (PND9) in Trp53 heterozygote (het) and wild type (WT) mice...
January 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28056424/neonatal-anesthetic-neurotoxicity-insight-into-the-molecular-mechanisms-of-long-term-neurocognitive-deficits
#11
REVIEW
Deshui Yu, Linji Li, Weiguo Yuan
Mounting animal studies have demonstrated that almost all the clinically used general anesthetics could induce widespread neuroapoptosis in the immature brain. Alarmingly, some published findings have reported long-term neurocognitive deficits in response to early anesthesia exposure which deeply stresses the potential seriousness of developmental anesthetic neurotoxicity. However, the connection between anesthesia induced neuroapoptosis and subsequent neurocognitive deficits remains controversial. It should be noted that developmental anesthesia related neurotoxicity is not limited to neuroapoptosis...
March 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28048979/adult-hippocampal-neurogenesis-is-impaired-by-transient-and-moderate-developmental-thyroid-hormone-disruption
#12
M E Gilbert, J H Goodman, J Gomez, A F M Johnstone, R L Ramos
The hippocampus maintains a capacity for neurogenesis throughout life, a capacity that is reduced in models of adult onset hypothyroidism. The effects of developmental thyroid hormone (TH) insufficiency on neurogenesis in the adult hippocampus, however, has not been examined. Graded degrees of TH insufficiency were induced in pregnant rat dams by administration of 0, 3 or 10ppm of 6-propylthiouracil (PTU) in drinking water from gestational day (GD) 6 until weaning. Body, brain, and hippocampal weight were reduced on postnatal day (PN) 14, 21, 78 and hippocampal volume was smaller at the 10 but not 3ppm dose level...
December 31, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27995059/working-memory-circuit-as-a-function-of-increasing-age-in-healthy-adolescence-a-systematic-review-and-meta-analyses
#13
Julia Andre, Marco Picchioni, Ruibin Zhang, Timothea Toulopoulou
Working memory ability matures through puberty and early adulthood. Deficits in working memory are linked to the risk of onset of neurodevelopmental disorders such as schizophrenia, and there is a significant temporal overlap between the peak of first episode psychosis risk and working memory maturation. In order to characterize the normal working memory functional maturation process through this critical phase of cognitive development we conducted a systematic review and coordinate based meta-analyses of all the available primary functional magnetic resonance imaging studies (n = 382) that mapped WM function in healthy adolescents (10-17 years) and young adults (18-30 years)...
2016: NeuroImage: Clinical
https://www.readbyqxmd.com/read/27992325/neurogenesis-enhances-response-specificity-to-spatial-pattern-stimulation-in-hippocampal-cultures
#14
Yukimi Tanaka, Takuya Isomura, Kenta Shimba, Kiyoshi Kotani, Yasuhiko Jimbo
OBJECTIVE: Adult neurogenesis in the hippocampus facilitates cognitive functions such as pattern separation in mammals. However, it remains unclear how newborn neurons mediate changes in neural networks to enhance pattern separation ability. Here, we developed an in vitro model of adult neurogenesis using rat hippocampal cultures in order to investigate whether newborn neurons can be directly incorporated into neural networks related to pattern separation to produce functional improvements...
December 14, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27983697/%C3%AE-tocopherol-and-hippocampal-neural-plasticity-in-physiological-and-pathological-conditions
#15
REVIEW
Patrizia Ambrogini, Michele Betti, Claudia Galati, Michael Di Palma, Davide Lattanzi, David Savelli, Francesco Galli, Riccardo Cuppini, Andrea Minelli
Neuroplasticity is an "umbrella term" referring to the complex, multifaceted physiological processes that mediate the ongoing structural and functional modifications occurring, at various time- and size-scales, in the ever-changing immature and adult brain, and that represent the basis for fundamental neurocognitive behavioral functions; in addition, maladaptive neuroplasticity plays a role in the pathophysiology of neuropsychiatric dysfunctions. Experiential cues and several endogenous and exogenous factors can regulate neuroplasticity; among these, vitamin E, and in particular α-tocopherol (α-T), the isoform with highest bioactivity, exerts potent effects on many plasticity-related events in both the physiological and pathological brain...
December 15, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27959921/temporal-dynamics-and-developmental-maturation-of-salience-default-and-central-executive-network-interactions-revealed-by-variational-bayes-hidden-markov-modeling
#16
Srikanth Ryali, Kaustubh Supekar, Tianwen Chen, John Kochalka, Weidong Cai, Jonathan Nicholas, Aarthi Padmanabhan, Vinod Menon
Little is currently known about dynamic brain networks involved in high-level cognition and their ontological basis. Here we develop a novel Variational Bayesian Hidden Markov Model (VB-HMM) to investigate dynamic temporal properties of interactions between salience (SN), default mode (DMN), and central executive (CEN) networks-three brain systems that play a critical role in human cognition. In contrast to conventional models, VB-HMM revealed multiple short-lived states characterized by rapid switching and transient connectivity between SN, CEN, and DMN...
December 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/27938482/repetitive-and-prolonged-omega-3-fatty-acid-treatment-after-traumatic-brain-injury-enhances-long-term-tissue-restoration-and-cognitive-recovery
#17
Hongjian Pu, Xiaoyan Jiang, Zhishuo Wei, Dandan Hong, Sulaiman Hassan, Wenting Zhang, Yejie Shi, Ling Chen, Jun Chen
Traumatic brain injury (TBI) is one of the most disabling clinical conditions that could lead to neurocognitive disorders in survivors. Our group and others previously reported that prophylactic enrichment of dietary omega-3 polyunsaturated fatty acids (n-3 PUFAs) markedly ameliorates cognitive deficits after TBI. However, it remains unclear whether a clinically relevant therapeutic regimen with n-3 PUFAs administered after TBI would still offer significant improvement of long-term cognitive recovery. In the present study, we employed the decline of spatial cognitive function as a main outcome after TBI to investigate the therapeutic efficacy of post-TBI n-3 PUFA treatment and the underlying mechanisms...
November 24, 2016: Cell Transplantation
https://www.readbyqxmd.com/read/27925861/modeling-heavy-ion-impairment-of-hippocampal-neurogenesis-after-acute-and-fractionated-irradiation
#18
Eliedonna Cacao, Francis A Cucinotta
Radiation-induced impairment of neurogenesis in the hippocampal dentate gyrus is a concern due to its reported association with cognitive detriments after radiotherapy for brain cancers and the possible risks to astronauts chronically exposed to space radiation. Here, we have extended our recent work in a mouse model of impaired neurogenesis after exposure to low-linear energy transfer (LET) radiation to heavy ion irradiation. To our knowledge, this is the first report of a predictive mathematical model of radiation-induced changes to neurogenesis for a variety of radiation types after acute or fractionated irradiation...
December 2016: Radiation Research
https://www.readbyqxmd.com/read/27918466/evaluating-a-website-to-teach-children-safety-with-dogs-a-randomized-controlled-trial
#19
David C Schwebel, Peng Li, Leslie A McClure, Joan Severson
Dog bites represent a significant threat to child health. Theory-driven interventions scalable for broad dissemination are sparse. A website was developed to teach children dog safety via increased knowledge, improved cognitive skills in relevant domains, and increased perception of vulnerability to bites. A randomized controlled trial was conducted with 69 children aged 4-5 randomly assigned to use the dog safety website or a control transportation safety website for ~3 weeks. Assessment of dog safety knowledge and behavior plus skill in three relevant cognitive constructs (impulse control, noticing details, and perspective-taking) was conducted both at baseline and following website use...
December 2, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27917679/the-default-mode-network-in-healthy-individuals-a-systematic-review-and-meta-analysis
#20
Lauren E Mak, Luciano Minuzzi, Glenda MacQueen, Geoffrey Hall, Sidney H Kennedy, Roumen Milev
When the brain is not engaged in goal-directed activities and at rest, there are still measureable patterns of activity. One resting-state network, the default mode network (DMN) is responsible for a self-referential introspective state. There are many factors that influence normal changes in brain activity. The purpose of this review is to summarize differences in DMN functional connectivity in healthy individuals by age, sex, cognitive function, and analysis type to characterize what is "normal." Studies were systematically selected up to August 2016...
February 2017: Brain Connectivity
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