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https://www.readbyqxmd.com/read/28328533/plasma-but-not-serum-brain-derived-neurotrophic-factor-concentration-is-decreased-by-oral-glucose-tolerance-test-induced-hyperglycemia-in-children
#1
Shunsuke Araki, Yukiyo Yamamoto, Reiko Saito, Aoi Kawakita, Mami Eguchi, Motohide Goto, Kazuyasu Kubo, Rinko Kawagoe, Yasusada Kawada, Koichi Kusuhara
BACKGROUND: Little is known regarding the relationships among circulating brain-derived neurotrophic factor (BDNF) levels and glucose or insulin in children and adolescents. The objective of this study was to investigate whether circulating BDNF levels would change during the oral glucose tolerance test (OGTT). METHODS: We performed the OGTT and measured the serial changes in BDNF levels in both plasma and serum. RESULTS: There were 22 subjects in the normal type (N) group and 20 in the borderline/diabetic type (B/D) group, defined by the results of the OGTT...
March 22, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28327672/tox-and-adipoq-gene-polymorphisms-are-associated-with-antipsychotic-induced-weight-gain-in-han-chinese
#2
Shen Li, Chengai Xu, Yuan Tian, Xueshi Wang, Rui Jiang, Miaomiao Zhang, Lili Wang, Guifu Yang, Ying Gao, Chenyu Song, Yukun He, Ying Zhang, Jie Li, Wei-Dong Li
To find the genetic markers related to the antipsychotic-induced weight gain (AIWG), we analyzed associations among candidate gene single-nucleotide polymorphisms (SNPs) and quantitative traits of weight changes and lipid profiles in a Chinese Han population. A total of 339 schizophrenic patients, including 86 first-episode patients (FEPs), meeting the entry criteria were collected. All patients received atypical antipsychotic drug monotherapy and hospitalization and were followed for 12 weeks. Forty-three SNPs in 23 candidate genes were calculated for quantitative genetic association with AIWG, performed by PLINK...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28327516/an-extract-from-shrimp-processing-by-products-protects-sh-sy5y-cells-from-neurotoxicity-induced-by-a%C3%AE-25-35
#3
Yongping Zhang, Guangling Jiao, Cai Song, Shelly Gu, Richard E Brown, Junzeng Zhang, Pingcheng Zhang, Jacques Gagnon, Steven Locke, Roumiana Stefanova, Claude Pelletier, Yi Zhang, Hongyu Lu
Increased evidence suggests that marine unsaturated fatty acids (FAs) can protect neurons from amyloid-β (Aβ)-induced neurodegeneration. Nuclear magnetic resonance (NMR), high performance liquid chromatography (HPLC) and gas chromatography (GC) assays showed that the acetone extract 4-2A obtained from shrimp Pandalus borealis industry processing wastes contained 67.19% monounsaturated FAs and 16.84% polyunsaturated FAs. The present study evaluated the anti-oxidative and anti-inflammatory effects of 4-2A in Aβ25-35-insulted differentiated SH-SY5Y cells...
March 22, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28326910/circadian-rhythms-in-plasma-brain-derived-neurotrophic-factor-differ-in-men-and-women
#4
Sean W Cain, Anne-Marie Chang, Irma Vlasac, Archana Tare, Clare Anderson, Charles A Czeisler, Richa Saxena
The measurement of circulating levels of brain-derived neurotrophic factor (BDNF) has been proposed to be a marker of disease and an indicator of recovery. Thus, knowing the temporal pattern and influence of potential circadian rhythms is important. Although several studies have measured BDNF at different times of day, no studies have done so while controlling for potential masking influences such as sleep and activity. Further, no previous study has examined circadian rhythms within individuals. We examined circadian rhythms in plasma BDNF while minimizing masking from behavioral and environmental factors using a 30-h constant routine (CR) protocol...
February 2017: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/28324222/bdnf-mrna-splice-variants-differentially-impact-ca1-and-ca3-dendrite-complexity-and-spine-morphology-in-the-hippocampus
#5
Kristen R Maynard, John W Hobbs, Mahima Sukumar, Alisha S Kardian, Dennisse V Jimenez, Robert J Schloesser, Keri Martinowich
Brain-derived neurotrophic factor (BDNF) is an activity-dependent neurotrophin critical for neuronal plasticity in the hippocampus. BDNF is encoded by multiple transcripts with alternative 5' untranslated regions (5'UTRS) that display activity-induced targeting to distinct subcellular compartments. While individual Bdnf 5'UTR transcripts influence dendrite morphology in cultured hippocampal neurons, it is unknown whether Bdnf splice variants impact dendrite arborization in functional classes of neurons in the intact hippocampus...
March 21, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28323283/treadmill-exercise-suppressed-stress-induced-dendritic-spine-elimination-in-mouse-barrel-cortex-and-improved-working-memory-via-bdnf-trkb-pathway
#6
K Chen, L Zhang, M Tan, C S W Lai, A Li, C Ren, K-F So
Stress-related memory deficit is correlated with dendritic spine loss. Physical exercise improves memory function and promotes spinogenesis. However, no studies have been performed to directly observe exercise-related effects on spine dynamics, in association with memory function. This study utilized transcranial two-photon in vivo microscopy to investigate dendritic spine formation and elimination in barrel cortex of mice under physical constrain or naive conditions, followed by memory performance in a whisker-dependent novel texture discrimination task...
March 21, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28322842/simultaneous-blockade-of-nmda-receptors-and-parp-1-activity-synergistically-alleviate-immunoexcitotoxicity-and-bioenergetics-in-3-nitropropionic-acid-intoxicated-mice-evidences-from-memantine-and-3-aminobenzamide-interventions
#7
Saravana Babu Chidambaram, Ranju Vijayan, Sathiya Sekar, Sugumar Mani, Barathidsan Rajamani, Ramakrishnan Ganapathy
Interlink between excitotoxicity and cellular bioenergetics depletion is implicated as one of the central deteriorative pathways in many neurodegenerative diseases including Huntington's disease (HD). Chronic administration of 3-nitropropionic acid (3-NP) depletes ATP and NAD(+;) and increases TNFα, IL-6 and glutamate content resulting in "immunoexcitotoxicity". Present study was designed to determine whether the combination of memantine (MN) and 3-aminobenzamide (3-AB), PARP inhibitor, can ameliorate immunoexcitotoxicity and improve bioenergetics in a better manner than individual administration against 3-NP intoxication in mice...
March 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28322281/identification-of-a-novel-fast-acting-gabaergic-antidepressant
#8
K M J McMurray, M J Ramaker, A M Barkley-Levenson, P S Sidhu, P K Elkin, M K Reddy, M L Guthrie, J M Cook, V H Rawal, L A Arnold, S C Dulawa, A A Palmer
Current pharmacotherapies for depression exhibit slow onset, side effects and limited efficacy. Therefore, identification of novel fast-onset antidepressants is desirable. GLO1 is a ubiquitous cellular enzyme responsible for the detoxification of the glycolytic byproduct methylglyoxal (MG). We have previously shown that MG is a competitive partial agonist at GABA-A receptors. We examined the effects of genetic and pharmacological inhibition of GLO1 in two antidepressant assay models: the tail suspension test (TST) and the forced swim test (FST)...
March 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28322202/genetic-epistasis-regulates-amyloid-deposition-in-resilient-aging
#9
Daniel Felsky, Jishu Xu, Lori Chibnik, Julie Schneider, Jo Knight, James L Kennedy, David A Bennett, Philip L De Jager, Aristotle N Voineskos
INTRODUCTION: The brain-derived neurotrophic factor (BDNF) interacts with important genetic Alzheimer's disease (AD) risk factors. Specifically, variants within the SORL1 gene determine BDNF's ability to reduce amyloid β (Aβ) in vitro. We sought to test whether functional BDNF variation interacts with SORL1 genotypes to influence expression and downstream AD-related processes in humans. METHODS: We analyzed postmortem brain RNA sequencing and neuropathological data for 441 subjects from the Religious Orders Study/Memory and Aging Project and molecular and structural neuroimaging data for 1285 subjects from the Alzheimer's Disease Neuroimaging Initiative...
March 16, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28321979/effect-of-the-early-social-environment-on-behavioural-and-genomic-responses-to-a-social-challenge-in-a-cooperatively-breeding-vertebrate
#10
Cecilia Nyman, Stefan Fischer, Nadia Aubin-Horth, Barbara Taborsky
The early social environment can have substantial, lifelong effects on vertebrate social behaviour, which can be mediated by developmental plasticity of brain gene expression. Early life effects can influence immediate behavioural responses towards later-life social challenges and can activate different gene expression responses. However, while genomic responses to social challenges have been reported frequently, how developmental experience influences the shape of these genomic reaction norms remains largely unexplored...
March 21, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28321113/acid-sensing-ion-channel-1a-in-the-amygdala-is-involved-in-pain-and-anxiety-related-behaviours-associated-with-arthritis
#11
Youssef Aissouni, Abderrahim El Guerrab, Al Mahdy Hamieh, Jérémy Ferrier, Maryse Chalus, Diane Lemaire, Stéphanie Grégoire, Monique Etienne, Alain Eschalier, Denis Ardid, Eric Lingueglia, Fabien Marchand
Chronic pain is associated with anxiety and depression episodes. The amygdala plays a key role in the relationship between emotional responses and chronic pain. Here, we investigated the role of Acid-Sensing Ion Channels 1a within the basolateral amygdala (BLA), in pain and associated anxiety in a rat model of monoarthritis (MoAr). Administration within the BLA of PcTx1 or mambalgin-1, two specific inhibitors of ASIC1a-containing channels significantly inhibited pain and anxiety-related behaviours in MoAr rats...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28320842/stat3-controls-the-long-term-survival-and-phenotype-of-repair-schwann-cells-during-nerve-regeneration
#12
Cristina Benito, Catherine M Davis, Jose A Gomez-Sanchez, Mark Turmaine, Dies Meijer, Valeria Poli, Rhona Mirsky, Kristjan R Jessen
After nerve injury, Schwann cells convert to a phenotype specialised to promote repair. But during the slow process of axonal regrowth, these repair Schwann cells gradually lose their regeneration-supportive features and eventually die. Although this is a key reason for the frequent regeneration failures in humans, the transcriptional mechanisms that control long-term survival and phenotype of repair cells have not been studied, and the molecular signalling underlying their decline is obscure. We show, in mice, that Schwann cell STAT3 has a dual role...
March 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28320276/effects-of-short-term-exposure-to-lithium-on-antiapoptotic-bcl-xl-protein-expression-in-cortex-and-hippocampus-of-rats-after-acute-stress
#13
N N Dygalo, A V Bannova, E V Sukhareva, G T Shishkina, K A Ayriyants, T S Kalinina
The antiapoptotic protein Bcl-xL is involved in development of neurobiological resilience to stress; hence, the possibility of use of psychotropic drugs to increase its expression in brain in response to stress is of considerable interest. Lithium is a neurotropic drug widely used in psychiatry. In work, we studied effects of lithium administration (for 2 or 7 days) on the expression of Bcl-xL mRNA and protein in the hippocampi and cortices of rats subjected to stress that induced depression-like behavior in the animals...
March 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28320273/impact-of-changes-in-neurotrophic-supplementation-on-development-of-alzheimer-s-disease-like-pathology-in-oxys-rats
#14
E A Rudnitskaya, N G Kolosova, N A Stefanova
Alzheimer's disease (AD) is the most common type of age-related dementia. The development of neurodegeneration in AD is closely related to alterations in neurotrophic supplementation of the brain, which may be caused either by disorder of neurotrophin metabolism or by modification of its availability due to changes in the microenvironment of neurons. The underlying mechanisms are not fully understood. In this work, we used senescence-accelerated OXYS rats as a unique model of the sporadic form of AD to examine the relationship of development of AD signs and changes in neurotrophic supplementation of the cortex...
March 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28320272/neurotrophic-factors-bdnf-and-gdnf-and-the-serotonergic-system-of-the-brain
#15
REVIEW
N K Popova, T V Ilchibaeva, V S Naumenko
Neurotrophic factors play a key role in development, differentiation, synaptogenesis, and survival of neurons in the brain as well as in the process of their adaptation to external influences. The serotonergic (5-HT) system is another major factor in the development and neuroplasticity of the brain. In the present review, the results of our own research as well as data provided in the corresponding literature on the interaction of brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF) with the 5-HT-system of the brain are considered...
March 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28320271/interplay-between-brain-bdnf-and-glutamatergic-systems-a-brief-state-of-the-evidence-and-association-with-the-pathogenesis-of-depression
#16
REVIEW
N V Gulyaeva
The excitatory neurotransmitter glutamate system and the brain-derived neurotrophic factor (BDNF) system are principally involved in phenomena of cellular and synaptic plasticity. These systems are interacting, and disclosing mechanisms of such interactions is critically important for understanding the machinery of neuroplasticity and its modulation in normal and pathological situations. The short state of evidence in this review addresses experimentally confirmed connections of these mechanisms and their potential relation to the pathogenesis of depression...
March 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28320268/neonatal-proinflammatory-stress-induces-accumulation-of-corticosterone-and-interleukin-6-in-the-hippocampus-of-juvenile-rats-potential-mechanism-of-synaptic-plasticity-impairments
#17
M V Onufriev, S V Freiman, D I Peregud, I V Kudryashova, A O Tishkina, M Yu Stepanichev, N V Gulyaeva
Infectious diseases in early postnatal ontogenesis can induce neuroinflammation, disrupt normal central nervous system development, and contribute to pathogenesis of cerebral pathologies in adults. To study long-term consequences of such early stress, we induced neonatal proinflammatory stress (NPS) by injecting bacterial lipopolysaccharide into rat pups on postnatal days 3 and 5 and then assessed the levels of corticosterone, proinflammatory cytokines and their mRNAs, and neurotrophins and their mRNAs in the hippocampus and neocortex of the one-month-old animals...
March 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28320099/light-emitting-diode-led-therapy-improves-occipital-cortex-damage-by-decreasing-apoptosis-and-increasing-bdnf-expressing-cells-in-methanol-induced-toxicity-in-rats
#18
Amir Ghanbari, Majid Ghareghani, Kazem Zibara, Hamdallah Delaviz, Elham Ebadi, Mohammad Hossein Jahantab
Methanol-induced retinal toxicity, frequently associated with elevated free radicals and cell edema, is characterized by progressive retinal ganglion cell (RGC) death and vision loss. Previous studies investigated the effect of photomodulation on RGCs, but not the visual cortex. In this study, the effect of 670nm Light-Emitting Diode (LED) therapy on RGCs and visual cortex recovery was investigated in a seven-day methanol-induced retinal toxicity protocol in rats. Methanol administration showed a reduction in the number of RGCs, loss of neurons (neuronal nuclear antigen, NeuN+), activation of glial fibrillary acidic protein (GFAP+) expressing cells, suppression of brain-derived neurotrophic factor (BDNF+) positive cells, increase in apoptosis (caspase 3+) and enhancement of nitric oxide (NO) release in serum and brain...
March 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28318471/adjunctive-n-acetylcysteine-in-depression-exploration-of-interleukin-6-c-reactive-protein-and-brain-derived-neurotrophic-factor
#19
Kyoko Hasebe, Laura Gray, Chiara Bortolasci, Bruna Panizzutti, Mohammadreza Mohebbi, Srisaiyini Kidnapillai, Briana Spolding, Ken Walder, Michael Berk, Gin Malhi, Seetal Dodd, Olivia M Dean
OBJECTIVE: This study aimed to explore effects of adjunctive N-acetylcysteine (NAC) treatment on inflammatory and neurogenesis markers in unipolar depression. METHODS: We embarked on a 12-week clinical trial of NAC (2000 mg/day compared with placebo) as an adjunctive treatment for unipolar depression. A follow-up visit was conducted 4 weeks following the completion of treatment. We collected serum samples at baseline and the end of the treatment phase (week 12) to determine changes in interleukin-6 (IL6), C-reactive protein (CRP) and brain-derived neurotrophic factor (BDNF) following NAC treatment...
March 20, 2017: Acta Neuropsychiatrica
https://www.readbyqxmd.com/read/28318450/repeated-sprints-in-fasted-state-impair-reaction-time-performance
#20
Anissa Cherif, Romain Meeusen, Abdulaziz Farooq, Walid Briki, Mohamed Amine Fenneni, Karim Chamari, Bart Roelands
OBJECTIVE: The aim of this study was to assess the effects of 3-day Islamic intermittent fasting (3d-IF) on cognitive performance and serum levels of neurotrophic factors (brain-derived neurotrophic factor [BDNF] and vascular endothelial growth factor [VEGF]) before and after repeated sprints. METHODS: Twenty-one physically active male Muslims (29.8 ± 5.9 years, exercising 4 ± 1.5 times/week) were randomly assigned to one of 2 experimental sessions: the control or nonfasting session (CS) or the fasting session (FS)...
March 20, 2017: Journal of the American College of Nutrition
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