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Developmental Neuroscience

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https://www.readbyqxmd.com/read/29763885/intrauterine-growth-restriction-affects-cerebellar-granule-cells-in-the-developing-guinea-pig-brain
#1
Mary Tolcos, Annie McDougall, Amy Shields, Yoonyoung Chung, Rachael O'Dowd, Ann Turnley, Megan Wallace, Sandra Rees
Intrauterine growth restriction (IUGR) can lead to adverse neurodevelopmental sequelae in postnatal life. However, the effects of IUGR on the cerebellum are still to be fully elucidated. A major determinant of growth and development of the cerebellum is proliferation and subsequent migration of cerebellar granule cells. Our objective was to determine whether IUGR, induced by chronic placental insufficiency (CPI) in guinea pigs, results in abnormal cerebellar development due to deficits suggestive of impaired granule cell proliferation and/or migration...
May 15, 2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29680832/differential-fatty-acid-binding-protein-expression-in-persistent-radial-glia-in-the-human-and-sheep-subventricular-zone
#2
Birger Victor Dieriks, Justin M Dean, Eleonora Aronica, Henry J Waldvogel, Richard L M Faull, Maurice A Curtis
Fatty acid-binding proteins (FABPs) are a family of transport proteins that facilitate intracellular transport of fatty acids. Despite abundant expression in the brain, the role that FABPs play in the process of cell proliferation and migration in the subventricular zone (SVZ) remains unclear. Our results provide a detailed characterisation of FABP3, 5, and 7 expression in adult and fetal human and sheep SVZ. High FABP5 expression was specifically observed in the adult human SVZ and co-labelled with polysialylated neural cell adhesion molecule (PSA-NCAM), glial fibrillary acidic protein (GFAP), GFAPδ, and proliferating cell nuclear antigen (PCNA), indicating a role for FABP5 throughout the full maturation process of astrocytes and neuroblasts...
April 20, 2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29656289/high-concentration-of-glial-cell-line-derived-neurotrophic-factor-protects-primary-astrocytes-from-apoptosis
#3
Yuqian Wang, Yuxia Qin, Tingwen Guo, Chuanxi Tang, Liyun Liu, Dianshuai Gao
BACKGROUND: Studies have shown that astrocytes play an important role in a variety of biological processes, so damage to astrocytes can cause a series of related diseases. Glial cell line-derived neurotrophic factor (GDNF) has always been considered a protective factor for dopamine neurons. However, it remains unclear whether GDNF has a protective effect on glial cells, especially astrocytes. In this study, we put forward the hypothesis that a high concentration of GDNF in the microenvironment of astrocytes exerts an inhibitory effect on the apoptosis of astrocytes by DNA-damaging reagents...
April 13, 2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29635235/cranial-irradiation-induces-hypothalamic-injury-and-late-onset-metabolic-disturbances-in-juvenile-female-rats
#4
Yiran Xu, Yanyan Sun, Kai Zhou, Tao Li, Cuicui Xie, Yaodong Zhang, Juan Rodriguez, Yanling Wu, Min Hu, Linus R Shao, Xiaoyang Wang, Changlian Zhu
Cranial radiotherapy is one of the most effective tools for treating children with brain tumors. However, radiotherapy-induced late-onset side effects have a significant impact on patients' quality of life. The purpose of this study was to investigate the effects of irradiation on metabolism and the possible molecular and cellular mechanisms behind such effects. Female Wistar rats were subjected to a single dose of 6-Gy whole-brain irradiation on postnatal day 11. The animals were sacrificed 6 h or 20 weeks after irradiation...
April 10, 2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29539630/altered-hippocampal-gene-expression-and-morphology-in-fetal-piglets-following-maternal-respiratory-viral-infection
#5
Adrienne M Antonson, Bindu Balakrishnan, Emily C Radlowski, Geraldine Petr, Rodney W Johnson
Maternal infection during pregnancy increases the risk of neurobehavioral problems in offspring. Evidence from rodent models indicates that the maternal immune response to infection can alter fetal brain development, particularly in the hippocampus. However, information on the effects of maternal viral infection on fetal brain development in gyrencephalic species is limited. Thus, the objective of this study was to assess several effects of maternal viral infection in the last one-third of gestation on hippocampal gene expression and development in fetal piglets...
March 14, 2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29471293/neonatal-stress-has-a-long-lasting-sex-dependent-effect-on-anxiety-like-behavior-and-neuronal-morphology-in-the-prefrontal-cortex-and-hippocampus
#6
Silvana Regina de Melo, Caren Tatiane de David Antoniazzi, Shakhawat Hossain, Bryan Kolb
The long-lasting effects of early stress on brain development have been well studied. Recent evidence indicates that males and females respond differently to the same stressor. We examined the chronic effects of daily maternal separation (MS) on behavior and cerebral morphology in both male and female rats. Cognitive and anxiety-like behaviors were evaluated, and neuroplastic changes in 2 subregions of the prefrontal cortex (dorsal agranular insular cortex [AID] and cingulate cortex [Cg3]) and hippocampus (CA1 and dentate gyrus) were measured in adult male and female rats...
February 22, 2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29466799/exogenous-%C3%AE-hydroxybutyrate-treatment-and-neuroprotection-in-a-suckling-rat-model-of-hypoxic-ischemic-encephalopathy
#7
Byong Sop Lee, Dong-Cheol Woo, Chul-Woong Woo, Ki-Soo Kim
β-Hydroxybutyrate (BHB) is a representative ketone body that may play a role in the mitigation of neonatal hypoxic-ischemic encephalopathy by altering energy metabolism. This study aimed to investigate the neuroprotective efficacy of exogenous BHB administration in a suckling rat model after hypoxia-ischemia (HI). Thirteen-day-old (P13) rat pups were subjected to 120 min of hypoxia according to the Rice-Vannucci model. BHB (5.0 mmol/kg, HI-BHB) or vehicle (0.9% saline, HI-Veh) was administered 0, 2, 4, and 6 h after HI induction...
2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29444518/effects-of-environmental-enrichment-on-nicotine-sensitization-in-rats-neonatally-treated-with-quinpirole-analyses-of-glial-cell-line-derived-neurotrophic-factor-and-implications-towards-schizophrenia
#8
Russell W Brown, Marjorie A Schlitt, Alex S Owens, Caitlynn C DePreter, Elizabeth D Cummins, Seth L Kirby, W Drew Gill, Katherine C Burgess
The current study analyzed the effects of environmental enrichment versus isolation housing on the behavioral sensitization to nicotine in the neonatal quinpirole (NQ; dopamine D2-like agonist) model of dopamine D2 receptor supersensitivity, a rodent model of schizophrenia. NQ treatment in rats increases dopamine D2 receptor sensitivity throughout the animal's lifetime, consistent with schizophrenia. Animals were administered NQ (1 mg/kg) or saline (NS) from postnatal day (P)1 to P21, weaned, and immediately placed into enriched housing or isolated in wire cages throughout the experiment...
2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29408814/magnesium-as-a-neuroprotective-agent-a-review-of-its-use-in-the-fetus-term-infant-with-neonatal-encephalopathy-and-the-adult-stroke-patient
#9
Ingran Lingam, Nicola J Robertson
Magnesium is an intracellular cation essential for many en-zymatic processes and cellular functions. Magnesium sulfate acts as an endogenous calcium channel antagonist at neuronal synapses, thought to prevent excessive activation of N-methyl-D-aspartate receptors by excitatory amino acids, such as glutamate, and by downregulation of proinflammatory pathways. Early intervention is essential in the prevention of the secondary phase of neuronal injury. The immature brain is particularly prone to excitotoxicity, and inflammation has been strongly implicated in the pathogenesis of cerebral palsy...
2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29393205/microglial-activation-induces-generation-of-oligodendrocyte-progenitor-cells-from-the-subventricular-zone-after-focal-demyelination-in-the-corpus-callosum
#10
Masae Naruse, Koji Shibasaki, Hiroya Shimauchi-Ohtaki, Yasuki Ishizaki
Neuroblasts derived from neural stem cells (NSCs) in the subventricular zone (SVZ) migrate along the rostral migratory stream into the olfactory bulb to generate interneurons under normal physiological conditions. When demyelination occurs, NSCs or neural progenitor cells (NPCs) in the SVZ provide newly formed oligodendrocytes to demyelinated lesions. The plasticity of NSC/NPC lineages may tend to oligodendrogenesis under the influence of demyelinated lesions. The mechanisms, however, still remain unknown. This study revealed that focal demyelination in the corpus callosum caused activation of the microglia, not only at the site of demyelination but also in the SVZ, and dramatically increased the generation of oligodendrocyte progenitor cells (OPCs) in the SVZ...
2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29393204/distribution-and-cellular-localization-of-kcc2-in-the-ferret-neocortex
#11
Francis T Djankpa, Oluwole B Akinola, Sharon L Juliano
KCC2 (a brain-specific potassium-chloride cotransporter) affects development of the cerebral cortex, including aspects of neuronal migration and cellular maturation and differentiation. KCC2 also modulates chloride homeostasis by influencing the switch of GABA from depolarizing in young neurons to hyperpolarizing in mature neurons. We describe the expression pattern, regional distribution, and cellular colocalization of KCC2 in the ferret cortex in normal kits and those treated with methylazoxymethanol acetate (MAM)...
2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29324456/targeted-knockdown-of-bone-morphogenetic-protein-signaling-within-neural-progenitors-protects-the-brain-and-improves-motor-function-following-postnatal-hypoxia-ischemia
#12
Robert W Dettman, Derin Birch, Augusta Fernando, John A Kessler, Maria L V Dizon
Hypoxic-ischemic injury (HI) to the neonatal human brain results in myelin loss that, in some children, can manifest as cerebral palsy. Previously, we had found that neuronal overexpression of the bone morphogenic protein (BMP) inhibitor noggin during development increased oligodendroglia and improved motor function in an experimental model of HI utilizing unilateral common carotid artery ligation followed by hypoxia. As BMPs are known to negatively regulate oligodendroglial fate specification of neural stem cells and alter differentiation of committed oligodendroglia, BMP signaling is likely an important mechanism leading to myelin loss...
2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29237154/effects-of-early-life-adversity-on-hippocampal-structures-and-associated-hpa-axis-functions
#13
Brigitte Dahmen, Vanessa B Puetz, Wolfgang Scharke, Georg G von Polier, Beate Herpertz-Dahlmann, Kerstin Konrad
Early-life adversity (ELA) is one of the major risk factors for serious mental and physical health risks later in life. ELA has been associated with dysfunctional neurodevelopment, especially in brain structures such as the hippocampus, and with dysfunction of the stress system, including the hypothalamic-pituitary-adrenal (HPA) axis. Children who have experienced ELA are also more likely to suffer from mental health disorders such as depression later in life. The exact interplay of aberrant neurodevelopment and HPA axis dysfunction as risks for psychopathology is not yet clear...
2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29216635/deficits-in-docosahexaenoic-acid-accrual-during-adolescence-reduce-rat-forebrain-white-matter-microstructural-integrity-an-in-vivo-diffusion-tensor-imaging-study
#14
Robert K McNamara, Jennifer D Schurdak, Ruth H Asch, Bart D Peters, Diana M Lindquist
Neuropsychiatric disorders that frequently initially emerge during adolescence are associated with deficits in the omega-3 (n-3) fatty acid docosahexaenoic acid (DHA), elevated proinflammatory signaling, and regional reductions in white matter integrity (WMI). This study determined the effects of altering brain DHA accrual during adolescence on WMI in the rat brain by diffusion tensor imaging (DTI), and investigated the potential mediating role of proinflammatory signaling. During periadolescent development, male rats were fed a diet deficient in n-3 fatty acids (DEF, n = 20), a fish oil-fortified diet containing preformed DHA (FO, n = 20), or a control diet (CON, n = 20)...
December 8, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/29073621/sexually-dimorphic-epigenetic-regulation-of-brain-derived-neurotrophic-factor-in-fetal-brain-in-the-valproic-acid-model-of-autism-spectrum-disorder
#15
Melissa A Konopko, Allison L Densmore, Bruce K Krueger
Prenatal exposure to the antiepileptic, mood-stabilizing drug, valproic acid (VPA), increases the incidence of autism spectrum disorders (ASDs); in utero administration of VPA to pregnant rodents induces ASD-like behaviors such as repetitive, stereotyped activity, and decreased socialization. In both cases, males are more affected than females. We previously reported that VPA, administered to pregnant mice at gestational day 12.5, rapidly induces a transient, 6-fold increase in BDNF (brain-derived neurotrophic factor) protein and mRNA in the fetal brain...
October 27, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/29183017/contents-vol-39-2017
#16
(no author information available yet)
No abstract text is available yet for this article.
2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/29131068/maternal-cannabinoid-use-alters-cannabinoid-cb1-and-endothelin-etb-receptor-expression-in-the-brains-of-dams-but-not-their-offspring
#17
Aarti Amlani, Mary G Hornick, Kevin Cooper, Preetha Prazad, Ramona Donovan, Anil Gulati
According to the 2015 National Survey on Drug Use and Health, cannabis (marijuana) is the most commonly used recreational drug in the US. Among pregnant women aged 14-55 years, 3.4% were cannabis users. Presently, little is known about the neurodevelopmental effect of cannabis use during pregnancy and/or nursing on neonates. Endothelin (ET) is essential for normal development of the central nervous system (CNS). Decreases in ETB receptor expression correlate with a decline in nerve growth factor (NGF) and an increase in vascular endothelial growth factor (VEGF) in postnatal brain...
2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/29080891/prenatal-dynamics-of-kynurenine-pathway-metabolism-in-mice-focus-on-kynurenic-acid
#18
Nick Goeden, Francesca M Notarangelo, Ana Pocivavsek, Sarah Beggiato, Alexandre Bonnin, Robert Schwarcz
The kynurenine pathway (KP), the major catabolic route of tryptophan in mammals, contains several neuroactive metabolites, including kynurenic acid (KYNA) and 3-hydroxykynurenine (3-HK). KP metabolism, and especially the fate of KYNA, during pregnancy is poorly understood, yet it may play a significant role in the development of psychiatric disorders later in life. The present study was designed to investigate the prenatal features of KP metabolism in vivo, with special focus on KYNA. To this end, pregnant CD-1 mice were treated systemically with kynurenine (100 mg/kg), KYNA (10 mg/kg), or saline on embryonic day 18...
2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28972955/impaired-cerebellar-maturation-growth-restriction-and-circulating-insulin-like-growth-factor-1-in-preterm-rabbit-pups
#19
Kristbjörg Sveinsdóttir, John-Kalle Länsberg, Snjólaug Sveinsdóttir, Martin Garwicz, Lennart Ohlsson, Ann Hellström, Lois Smith, Magnus Gram, David Ley
Cerebellar growth is impeded following very preterm birth in human infants and the observed reduction in cerebellar volume is associated with neurodevelopmental impairment. Decreased levels of circulating insulin-like growth factor 1 (IGF-1) are associated with decreased cerebellar volume. The relationship between preterm birth, circulating IGF-1, and key cell populations supporting cerebellar proliferation is unknown. The aim of this study was to evaluate the effect of preterm birth on postnatal growth, circulating IGF-1, and cerebellar maturation in a preterm rabbit pup model...
2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28889123/erratum
#20
(no author information available yet)
No abstract text is available yet for this article.
2017: Developmental Neuroscience
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