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International Journal of Developmental Neuroscience

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https://www.readbyqxmd.com/read/28610974/positive-modulation-of-%C3%AE-5-gabaa-receptors-in-preadolescence-prevents-reduced-locomotor-response-to-amphetamine-in-adult-female-but-not-male-rats-prenatally-exposed-to-lipopolysaccharide
#1
Bojan Batinić, Anja Santrač, Ivan Jančić, Guanguan Li, Aleksandra Vidojević, Bojan Marković, James M Cook, Miroslav M Savić
We previously demonstrated that lipopolysaccharide (LPS) administered intraperitoneally (i.p.) to pregnant Wistar rat dams, at embryonic days 15 and 16 (E15/16), induced a decrease of baseline locomotor activity and diminished reactivity to amphetamine in adult female offspring. In the present study we aimed to assess the duration of LPS-induced maternal immune activation (MIA) and investigate possible changes in levels of main neurotransmitters in fetal brain during MIA. We hypothesized that the observed behavioral changes may be linked with MIA-induced disturbance of prenatal GABAergic system development, especially with α5 GABAA receptors (α5GABAARs), expression of which takes place between E14 and E17...
June 10, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28559209/short-post-weaning-social-isolation-induces-long-term-changes-in-the-dopaminergic-system-and-increases-susceptibility-to-psychostimulants-in-female-rats
#2
Carine Lampert, Danusa Mar Arcego, Natividade de Sá Couto-Pereira, Aline Dos Santos Vieira, Ana Paula Toniazzo, Rachel Krolow, Emily Garcia, Deusa Aparecida Vendite, Maria Elisa Calcagnotto, Carla Dalmaz
Childhood and adolescence are sensitive periods of development, marked by high brain maturation and plasticity. Exposure to early life stress, such as social isolation, is able to prompt changes in sensitive brain circuitries, essentially in the mesolimbic dopaminergic system and increase the risk for addictive behaviors later in life. Post-weaning social isolation can stimulate the consumption of rewarding substances, like drugs of abuse and palatable foods. However, most studies analyze long periods of social isolation and very little is known about the effects of a brief social isolation in a sensitive period of development and its association with palatable food on the reward system sensitization...
May 27, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28546087/region-specific-oligodendrocyte-transcription-factor-expression-in-a-model-of-neonatal-hypoxic-injury
#3
Bethann M Affeldt, Andre Obenaus, Jonathan Chan, Andrea C Pardo
White matter injury (WMI) of prematurity is associated with a spectrum of neurological disorders ranging from mild cognitive and behavioral deficits to cerebral palsy. Translational studies have implicated impaired oligodendrocyte development after hypoxia as the primary cause of WMI, but the underlying mechanisms remain poorly understood. The goal of this study was to identify alterations in the expression of oligodendrocyte precursor cell transcription factors in a mouse model of transient mild global hypoxia...
May 22, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28539242/manganese-enhanced-mr-imaging-memri-combined-with-electrophysiology-in-the-study-of-cross-modal-plasticity-in-binocularly-blind-rats
#4
Zuohua Tang, Lingjie Wu, Zebin Xiao, Xinghuai Sun, Xiaoyuan Feng, Qian Chen, Jiawen Fan, Jie Wang, Wentao Wang, Jianfeng Luo, Lixin Jin
Our study aimed to determine and verify the establishment of visual to auditory cross-modal plasticity using manganese-enhanced MR imaging (MEMRI) combined with examinations of the visual evoked potential (VEP), auditory brainstem response (ABR) and bilateral visual cortex response to a bilateral auditory stimulus (AVR). Fourteen healthy male Sprague-Dawley newborn rats were randomly divided into 2 groups (n=7 per group). Optic nerve transection was performed in the 7 rats of Group A three weeks after birth to obtain binocularly blind models, and the 7 rats of Group B were maintained as the control group...
May 21, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28373023/cognitive-deficits-associated-with-a-high-fat-diet-and-insulin-resistance-are-potentiated-by-overexpression-of-ecto-nucleotide-pyrophosphatase-phosphodiesterase-1
#5
REVIEW
J M Kasper, A J Milton, A E Smith, F Laezza, G Taglialatela, J D Hommel, N Abate
There is growing evidence that over consumption of high-fat foods and insulin resistance may alter hippocampal-dependent cognitive function. To study the individual contributions of diet and peripheral insulin resistance to learning and memory, we used a transgenic mouse line that overexpresses ecto-nucleotide pyrophosphatase phosphodiesterase-1 in adipocytes, which inhibits the insulin receptor. Here, we demonstrate that a model of peripheral insulin resistance exacerbates high-fat diet induced deficits in performance on the Morris Water Maze task...
March 31, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28473192/characterization-of-a-cerebral-palsy-like-model-in-rats-analysis-of-gait-pattern-and-of-brain-and-spinal-cord-motor-areas
#6
Adriana Souza Dos Santos, Wellington de Almeida, Bruno Popik, Bruno Marques Sbardelotto, Márcia Miranda Torrejais, Marcelo Alves de Souza, Lígia Aline Centenaro
In an attempt to propose an animal model that reproduces in rats the phenotype of cerebral palsy, this study evaluated the effects of maternal exposure to bacterial endotoxin associated with perinatal asphyxia and sensorimotor restriction on gait pattern, brain and spinal cord morphology. Two experimental groups were used: Control Group (CTG) - offspring of rats injected with saline during pregnancy and Cerebral Palsy Group (CPG) - offspring of rats injected with lipopolysaccharide during pregnancy, submitted to perinatal asphyxia and sensorimotor restriction for 30days...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28465238/repetitive-stress-leads-to-impaired-cognitive-function-that-is-associated-with-dna-hypomethylation-reduced-bdnf-and-a-dysregulated-hpa-axis
#7
Khayelihle B Makhathini, Oualid Abboussi, Dan J Stein, Musa V Mabandla, William M U Daniels
Exposure to repetitive stress has a negative influence on cognitive-affective functioning, with growing evidence that these effects may be mediated by a dysregulated hypothalamic-pituitary-adrenal (HPA) axis, abnormal neurotrophic factor levels and its subsequent impact on hippocampal function. However, there are few data about the effect of repetitive stressors on epigenetic changes in the hippocampus. In the present study, we examine how repetitive restrain stress (RRS) affects cognitive-affective functioning, HPA axis regulation, brain-derived neurotrophic factor (BDNF) levels, and global hippocampal DNA methylation...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28455226/the-effect-of-selective-opioid-receptor-agonists-and-antagonists-on-epileptiform-activity-in-morphine-dependent-infant-mice-hippocampal-slices
#8
Yousef Panahi, Ehsan Saboory, Ali Rassouli, Goudarz Sadeghi-Hashjin, Shiva Roshan-Milani, Leila Derafshpour, Yousef Rasmi
Hippocampal slices of mouse brain were used to estimate how selective agonist and antagonist of opioid receptors alter Low-Mg(+2) artificial cerebrospinal fluid (LM-ACSF)-induced epileptiform activities in normal and morphine-dependent mice. Brain slices were obtained from control and morphine-dependent mice. The morphine-dependent group received morphine once a day for 5 consecutive days, and the control group received saline. All injections were administered subcutaneously (s.c) in a volume of 0.1mL on postnatal days 14-18...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28412445/methylphenidate-effects-in-the-young-brain-friend-or-foe
#9
REVIEW
Sara Loureiro-Vieira, Vera Marisa Costa, Maria de Lourdes Bastos, Félix Carvalho, João Paulo Capela
Attention deficit hyperactivity disorder (ADHD) is one of the most prevalent neuropsychiatry disorders in children and adolescents, and methylphenidate (MPH) is a first-line stimulant drug available worldwide for its treatment. Despite the proven therapeutic efficacy, concerns have been raised regarding the possible consequences of chronic MPH exposure during childhood and adolescence. Disturbances in the neurodevelopment at these crucial stages are major concerns given the unknown future life consequences...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28396290/neuroanatomical-demonstration-of-calbindin-2a-and-calbindin-2b-like-calcium-binding-proteins-in-the-early-embryonic-development-of-zebrafish-mrna-study
#10
Rahul C Bhoyar, Arun G Jadhao, Sridhar Sivasubbu, A R Singh, Ankit Sabharwal, Nikhil V Palande, Saikat Biswas
Certain calcium binding proteins (CaBPs) are essential for metabolic processes but the role of these proteins in the development is not well known. We have investigated the mRNA expression of CaBPs, calbindin 2a (Calb2a) and calbindin 2b (Calb2b) in the zebrafish embryos 24, 36, 48 and 72h post fertilization (hpf). We have seen very high Calb2a mRNA expression in the tegmentum (Tg), midbrain-hindbrain boundary (Mhb), hindbrain (Hb), spinal cord (Sc), retina and cranial ganglion (Crg). Also very high Calb2b mRNA expression was noted in olfactory cells, cerebellum, Tg, Mhb, Hb, optic tectum, retina, retinal ganglion cell layer, retinal inner nuclear layer, Sc, Neural crest, infraorbital neuromasts, pharyngeal arch 3-7 skeleton and mandibular neuromasts...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28389369/prenatal-stress-and-depression-associated-neuronal-development-in-neonates
#11
REVIEW
Mahino Fatima, Saurabh Srivastav, Amal Chandra Mondal
Prenatal maternal depression has its direct effects on early brain development deficits with permanent changes in neuroendocrine functions and impaired behavior in offsprings. Prenatal stress (PS) transmits its affect on developing fetus and on pregnancy outcomes in adult offsprings. This results in impaired neurodevelopment, delayed cognitive and motor development with impaired behavior towards stressful conditions. There are sufficient evidences in animal models suggesting depression responsive hypothalamic-pituitary-adrenal (HPA) axis and its hormonal response via cortisol, responsible for its critical effects in both the mother and offspring...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28377130/food-restriction-affects-y-maze-spatial-recognition-memory-in-developing-mice
#12
Yu Fu, Yanmei Chen, Liane Li, Yumei Wang, Xiangyang Kong, Jianhong Wang
The ambiguous effects of food restriction (FR) on cognition in rodents have been mostly explored in the aged brain by a variety of paradigms, in which either rewards or punishments are involved. This study aims to examine the effects of chronic and acute FR with varying intensities on spatial recognition memory in developing mice. We have used a Y-maze task that is based on the innate tendency of rodents to explore novel environments. In chronic FR, mice had 70-30% chow of control for seven weeks. In acute FR, mice were food restricted for 12-48h before the tests...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28377129/analysis-of-expression-of-transcription-factors-in-early-human-retina
#13
Jing Chen, Lixiang Ma, Songtao Wang, Xiaobing Wang, Yan Sun, Lu Gao, Jin Li, Guomin Zhou
The retina originates in the central nervous system. Due to its accessibility and simplicity, the retina has become an invaluable model for studying the basic mechanisms involved in development. To date, considerable knowledge regarding the interactions among genes that coordinate retinal development has been gained from extensive research in model animals. However, our understanding of retinal development in humans remains undeveloped. Here, we analyze the expression of transcription factors that are involved in the early development of the retina in human embryos at 6-12 weeks post-conception...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28323038/monocular-denervation-of-visual-nuclei-modulates-app-processing-and-sapp%C3%AE-production-a-possible-role-on-neural-plasticity
#14
Juliana Ferreira Vasques, Pedro Vinícius Bastos Heringer, Renata Guedes de Jesus Gonçalves, Paula Campello-Costa, Claudio Alberto Serfaty, Adriana da Cunha Faria-Melibeu
Amyloid precursor protein (APP) is essential to physiological processes such as synapse formation and neural plasticity. Sequential proteolysis of APP by beta- and gamma-secretases generates amyloid-beta peptide (Aβ), the main component of senile plaques in Alzheimer Disease. Alternative APP cleavage by alpha-secretase occurs within Aβ domain, releasing soluble α-APP (sAPPα), a neurotrophic fragment. Among other functions, sAPPα is important to synaptogenesis, neural survival and axonal growth. APP and sAPPα levels are increased in models of neuroplasticity, which suggests an important role for APP and its metabolites, especially sAPPα, in the rearranging brain...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28238464/type-1-diabetes-cognition-and-the-neurologist-exploring-go-no-go-and-maze-tasks-in-the-search-for-a-practical-screening-tool
#15
Jullyanna S M Shinosaki, Joaquim C Rossini, Maria Luiza P M Jorge, Lorena B C Macedo, Paulo J Tannús
AIMS: The objectives were to use inexpensive and easy-to-apply tasks in order to investigate the differences between type 1 diabetes mellitus (T1DM) patients and controls regarding attention and impulsivity, which are the basis for key-executive function components that are traditionally assessed using subjective, long and difficult to reproduce questionnaires. Additionally, we sought to correlate these differences with clinical characteristics, and to explore correlations between the tasks...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28049028/morphine-exposure-during-early-life-alters-thermal-and-mechanical-thresholds-in-rats
#16
Ellen A Nunes, Liciane Fernandes Medeiros, Joice Soares de Freitas, Isabel Cristina Macedo, Jonnsin Kuo, Andressa de Souza, Joanna Rippol Rozisky, Wolnei Caumo, Iraci L S Torres
BACKGROUND: Morphine is an opioid analgesic used to relieve moderate-to-severe pain, including pain in neonates at the intensive care unit. In our previous study, we showed that repeated morphine exposure during early life could trigger long-lasting implications on the developing nervous system, such as long-term neurochemical and behavioral alterations in adult rats. AIMS: The aim of our study was to determine the short-, intermediate-, and long-term effects of repeated morphine administration during early life on the thermal and mechanical thresholds and on the central levels (cerebral cortex and brainstem) of neurotrophins (brain-derived neurotrophic factor [BDNF] and nerve growth factor [NGF]) and cytokines (interleukin-6 [IL-6] and IL-10)...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/27554135/reduced-endogenous-urinary-total-antioxidant-power-and-its-relation-of-plasma-antioxidant-activity-of-superoxide-dismutase-in-individuals-with-autism-spectrum-disorder
#17
Kunio Yui, Nasoyuki Tanuma, Hiroshi Yamada, Yohei Kawasaki
Individuals with autism spectrum disorders (ASD) have impaired detoxification capacity. Investigating the neurobiological bases of impaired antioxidant capacity is thus a research priority in the pathophysiology of ASD. We measured the urinary levels of hexanoyl-lysine (HEL) which is a new oxidative stress biomarker, total antioxidant power (TAP) and DNA methylation biomarker 8-hydroxy-2'-deoxyguanosine (8-OHdG), and the plasma levels of superoxide dismutase (SOD), which is a major antioxidant enzyme...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28274759/insulin-deficiency-a-possible-link-between-obesity-and-cognitive-function
#18
Ghazaleh Nameni, Mahdieh Abbasalizad Farhangi, Ghazaleh Hajiluian, Parviz Shahabi, Mehran Mesgari Abbasi
BACKGROUND: Epidemiological studies proposed a linear connection between developing dementia including Alzheimer's disease (AD) and obesity. Adiposity, insulin resistance and dementia indicated probable mechanistic links in this process. Indeed, it has been known that optimum insulin action in the brain plays critical role in cognitive function; whereas, insulin resistance in obese individuals finally leads to insulin deficiency in central nervous system (CNS) and down regulation of the efficiency of insulin uptake from periphery into CSF...
June 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28219765/maternal-dipyrone-treatment-during-lactation-in-mice-reduces-maternal-behavior-and-increases-anxiety-like-behavior-in-offspring
#19
Vanessa Barbosa Veronesi, Tatiane Helena Batista, Ana Cláudia Alves Freire Ribeiro, Alexandre Giusti-Paiva, Fabiana Cardoso Vilela
Dipyrone (metamizole), a powerful drug, is widely used as an analgesic and antipyretic; however, the safety of its use during lactation and the potential impact on the offspring are not well established. This study aimed to determine the effect of maternal dipyrone treatment during lactation on offspring development and emotional behavior and on the dam's maternal behavior. Hence, on postnatal day (PND) 2, drinking water only or drinking water containing dipyrone at doses of 100, 300, and 500mg/kg/day, were offered to lactating mothers up to PND9...
May 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28192175/increased-anxiety-like-phenotype-in-female-guinea-pigs-following-reduced-neurosteroid-exposure-in-utero
#20
Angela L Cumberland, Hannah K Palliser, Gabrielle K Crombie, David W Walker, Jonathan J Hirst
Neurosteroids are essential for aiding proper fetal neurodevelopment. Pregnancy compromises such as preterm birth, prenatal stress and intrauterine growth restriction are associated with an increased risk of developing behavioural and mood disorders, particularly during adolescence. These pathologies involve the premature loss or alteration of trophic steroid hormones reaching the fetus leading to impaired neurodevelopment. While the specific programming mechanisms are yet to be fully elucidated, in adult life, dysfunctions of allopregnanolone action are prevalent in individuals with depression, post-traumatic stress disorder and anxiety disorders...
May 2017: International Journal of Developmental Neuroscience
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