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https://www.readbyqxmd.com/read/28449262/predictive-mechanisms-linking-brain-opioids-to-chronic-pain-vulnerability-and-resilience
#1
REVIEW
Anthony Kenneth Peter Jones, Christopher Andrew Brown
Chronic pain is a major global healthcare problem that is currently inadequately treated. In addition, the current use of opioids for treatment has reached far beyond the paucity of evidence for long-term benefits relative to risks. Benefit-risk models for opioid and non-opioid treatments would benefit from a rational, mechanism-based understanding of neuroplastic and neurochemical contributions to chronic pain. Here we evaluate the findings and limitations of representative research investigating brain neuroplasticity and neurochemistry in chronic pain...
April 27, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28417467/retraction-statement-cxcl12-cxcr4-chemokine-signaling-in-spinal-glia-induces-pain-hypersensitivity-through-mapks-mediated-neuroinflammation-in-bone-cancer-rats
#2
(no author information available yet)
'CXCL12/CXCR4 chemokine signaling in spinal glia induces pain hypersensitivity through MAPKs-mediated neuroinflammation in bone cancer rats' by Hu X.-M., Liu Y.-N., Zhang H.-L., Cao S.-B., Zhang T., Chen L.-P. and Shen W. The above article from Journal of Neurochemistry, published online on 26 January 2015 and in volume 132, issue 4, pages 452-463 (available through www.onlinelibrary.wiley.com), and its subsequent Corrigendum, published online on 5 February 2015 and in volume 132, issue 4, p. 487, have been retracted by agreement between the Journal's Editor-in-Chief, Jörg Schulz, corresponding author Wen Shen on behalf of the authors, and John Wiley & Sons Ltd...
May 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28414178/short-and-long-term-effects-of-risperidone-on-catalepsy-sensitisation-and-acquisition-of-conditioned-avoidance-response-adolescent-vs-adult-rats
#3
Aung Aung Kywe Moe, Gregory A Medely, Timothy Reeks, Thomas H J Burne, Darryl W Eyles
The effects of antipsychotic drugs (APDs) on the adolescent brain are poorly understood despite a dramatic increase in prescription of these drugs in adolescents over the past twenty years. Neuronal systems continue to be remodeled during adolescence. Therefore, when given in adolescence, antipsychotic drugs (APDs) have the potential to affect this remodeling. In this study we investigated the effects of chronic 22-day risperidone treatment (1.3mg/kg/day) in both adolescent and adult rats. We examined short- and long-term changes in behaviour (catalepsy, locomotion and conditioned avoidance response (CAR)), and dopaminergic and serotonergic neurochemistry in the striatum and the nucleus accumbens...
April 13, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28410131/substance-use-disorder-a-bio-directional-subset-of-reward-deficiency-syndrome
#4
Kenneth Blum, Mark Gold, Zsolt Demetrovics, Trevor Archer, Panayotis K Thanos, David Baron, Rajendra D Badgaiyan
This commentary is to inform clinicians challenged with an increase in people seeking treatment for Substance Use Disorder (SUD), that the ninety percent revolving door, is, in part, due to post-withdrawal, untreated neurotoxicity. This impairment attenuates neurotransmitter signaling and compromises resting state functional connectivity, leading to unwanted sequelae including depression, sleep disturbances, sensation seeking, lack of satisfaction and impulsivity. Neuroimaging studies indicate that neurobiological recovery can take years...
June 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28399791/highly-palatable-food-access-during-adolescence-increased-anxiety-depression-like-behaviors-in-male-but-not-in-female-rats
#5
Jin Young Kim, Doyun Kim, Kyungpyo Park, Jong-Ho Lee, Jeong Won Jahng
OBJECTIVES: This study was conducted to examine the sexual dimorphic effects of highly palatable food (HPF) access during adolescence on the neurochemistry and depression-/anxiety-like behaviors of rats. METHODS: Male and female Sprague-Dawley pups had free access to chocolate cookie rich in fat (HPF) from postnatal day 28 in addition to ad libitum chow, and the control groups received only chow. The food conditions were continued throughout the entire experimental period, and the neurochemical and behavioral measurements were performed during young adulthood...
April 11, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28392459/stroke-and-other-cerebrovascular-diseases
#6
EDITORIAL
Halina Offner, Masafumi Ihara, Wolf-Rüdiger Schäbitz, Peter T-H Wong
To achieve success in developing more effective treatments for stroke, we need a better understanding in all aspects of stroke including prevention, diagnosis, treatment, and post-stroke recovery and complications. The objective of this special issue is to bring to the readership of Neurochemistry International the latest developments and knowledge in a broad spectrum of areas of stroke research in both review and original research articles. Topics include neuroprotective diets, biomarkers used to aid clinical management, neurodegenerative as well as neuroprotective effects of the immune system, potential therapeutic targets, engineered growth factors that promote endogenous neuroregeneration, mechanisms of cerebral small vessel disease, and post stroke epilepsy...
April 6, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28375200/low-dose-penicillin-in-early-life-induces-long-term-changes-in-murine-gut-microbiota-brain-cytokines-and-behavior
#7
Sophie Leclercq, Firoz M Mian, Andrew M Stanisz, Laure B Bindels, Emmanuel Cambier, Hila Ben-Amram, Omry Koren, Paul Forsythe, John Bienenstock
There is increasing concern about potential long-term effects of antibiotics on children's health. Epidemiological studies have revealed that early-life antibiotic exposure can increase the risk of developing immune and metabolic diseases, and rodent studies have shown that administration of high doses of antibiotics has long-term effects on brain neurochemistry and behaviour. Here we investigate whether low-dose penicillin in late pregnancy and early postnatal life induces long-term effects in the offspring of mice...
April 4, 2017: Nature Communications
https://www.readbyqxmd.com/read/28373651/fatigue-modulates-dopamine-availability-and-promotes-flexible-choice-reversals-during-decision-making
#8
Pierpaolo Iodice, Claudio Ferrante, Luigi Brunetti, Simona Cabib, Feliciano Protasi, Mark E Walton, Giovanni Pezzulo
During decisions, animals balance goal achievement and effort management. Despite physical exercise and fatigue significantly affecting the levels of effort that an animal exerts to obtain a reward, their role in effort-based choice and the underlying neurochemistry are incompletely known. In particular, it is unclear whether fatigue influences decision (cost-benefit) strategies flexibly or only post-decision action execution and learning. To answer this question, we trained mice on a T-maze task in which they chose between a high-cost, high-reward arm (HR), which included a barrier, and a low-cost, low-reward arm (LR), with no barrier...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28363835/functional-dynamics-of-hippocampal-glutamate-during-associative-learning-assessed-with-in-vivo-1-h-functional-magnetic-resonance-spectroscopy
#9
Jeffrey A Stanley, Ashley Burgess, Dalal Khatib, Karthik Ramaseshan, Muzamil Arshad, Helen Wu, Vaibhav A Diwadkar
fMRI has provided vibrant characterization of regional and network responses associated with associative learning and memory; however, their relationship to functional neurochemistry is unclear. Here, we introduce a novel application of in vivo proton functional magnetic resonance spectroscopy ((1)H fMRS) to investigate the dynamics of hippocampal glutamate during paired-associated learning and memory in healthy young adults. We show that the temporal dynamics of glutamate differed significantly during processes of memory consolidation and retrieval...
March 29, 2017: NeuroImage
https://www.readbyqxmd.com/read/28351400/cerebrospinal-fluid-abnormalities-in-meningeosis-neoplastica-a-retrospective-12-year-analysis
#10
Marija Djukic, Ralf Trimmel, Ingelore Nagel, Annette Spreer, Peter Lange, Christine Stadelmann, Roland Nau
BACKGROUND: Meningeosis neoplastica is a diffuse metastatic spread of tumor cells in the subarachnoid space. Although first recognized in 1870, systematic investigations regarding cerebrospinal fluid (CSF) constituents in this condition are scarce. METHODS: Routine CSF samples analyzed from 2001 to 2012 at the Laboratory of Clinical Neurochemistry, University of Göttingen, were re-evaluated. Patients, whose CSF contained malignant cells were included in this study...
March 28, 2017: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/28350397/diagnosis-and-body-mass-index-effects-on-hippocampal-volumes-and-neurochemistry-in-bipolar-disorder
#11
D J Bond, L E Silveira, E L MacMillan, I J Torres, D J Lang, W Su, W G Honer, R W Lam, L N Yatham
We previously reported that higher body mass index (BMI) was associated with greater hippocampal glutamate+glutamine in people with bipolar disorder (BD), but not in non-BD healthy comparator subjects (HSs). In the current report, we extend these findings by examining the impact of BD diagnosis and BMI on hippocampal volumes and the concentrations of several additional neurochemicals in 57 early-stage BD patients and 31 HSs. Using 3-T magnetic resonance imaging and magnetic resonance spectroscopy, we measured bilateral hippocampal volumes and the hippocampal concentrations of four neurochemicals relevant to BD: N-acetylaspartate+N-acteylaspartylglutamate (tNAA), creatine+phosphocreatine (Cre), myoinositol (Ins) and glycerophosphocholine+phosphatidylcholine (Cho)...
March 28, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28338241/neuroprotective-effects-of-loganin-on-mptp-induced-parkinson-s-disease-mice-neurochemistry-glial-reaction-and-autophagy-studies
#12
Yi-Da Xu, Chun Cui, Meng-Fei Sun, Ying-Li Zhu, Min Chu, Yun-Wei Shi, Stanley Li Lin, Xu-Sheng Yang, Yan-Qin Shen
Parkinson's disease (PD) is a progressive neurodegenerative disease, involving resting tremor and bradykinesia, for which no recognized therapies or drugs are available to halt or slow progression. In recent years, natural botanic products have been considered relatively safe, with limited side effects, and are expected to become an important source for clinical mediation of PD in the future. Our study focuses on the ability of loganin, a compound derived from fruits of cornus, to mediate neuroprotection in a mouse model of PD...
March 24, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28317427/fatigue-is-it-all-neurochemistry
#13
Romain Meeusen, Bart Roelands
Fatigue during exercise can be approached from different angles. Peripheral fatigue is usually described as an impairment located in the muscle and characterized by a metabolic end point, while central fatigue is defined as a failure of the central nervous system to adequately drive the muscle. The aim of the present narrative review paper is to look at the mechanisms involved in the occurrence of fatigue during prolonged exercise, predominantly from a brain neurochemical point of view. From studies in rodents it is clear that exercise increases the release of several neurotransmitters in different brain regions, and that the onset of fatigue can be manipulated when dopaminergic influx in the preoptic and anterior hypothalamus is increased, interfering with thermoregulation...
March 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28295336/neurochemistry-of-neurons-in-the-ventrolateral-medulla-activated-by-hypotension-are-the-same-neurons-activated-by-glucoprivation
#14
Lindsay M Parker, Sheng Le, Travis A Wearne, Kate Hardwick, Natasha N Kumar, Katherine J Robinson, Simon McMullan, Ann K Goodchild
Previous studies have demonstrated that a range of stimuli activate neurons, including catecholaminergic neurons, in the ventrolateral medulla. Not all catecholaminergic neurons are activated and other neurochemical content is largely unknown hence whether stimulus specific populations exist is unclear. Here we determine the neurochemistry (using in situ hybridization) of catecholaminergic and noncatecholaminergic neurons which express c-Fos immunoreactivity throughout the rostrocaudal extent of the ventrolateral medulla, in Sprague Dawley rats treated with hydralazine or saline...
March 13, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28262491/adaptation-of-circadian-neuronal-network-to-photoperiod-in-high-latitude-european-drosophilids
#15
Pamela Menegazzi, Elena Dalla Benetta, Marta Beauchamp, Matthias Schlichting, Ingolf Steffan-Dewenter, Charlotte Helfrich-Förster
The genus Drosophila contains over 2,000 species that, stemming from a common ancestor in the Old World Tropics, populate today very different environments [1, 2] (reviewed in [3]). We found significant differences in the activity pattern of Drosophila species belonging to the holarctic virilis group, i.e., D. ezoana and D. littoralis, collected in Northern Europe, compared to that of the cosmopolitan D. melanogaster, collected close to the equator. These behavioral differences might have been of adaptive significance for colonizing high-latitude habitats and hence adjust to long photoperiods...
March 20, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28261876/retraction
#16
(no author information available yet)
Retraction: "Chronic NMDA administration to rats up-regulates frontal cortex cytosolic phospholipase A2 and its transcription factor, activator protein-2" by Rao JS, Ertley RN, Rapoport SI, Bazinet RP, Lee HJ. The above article from Journal of Neurochemistry, published online on 13 April 2007 in Wiley Online Library (wileyonlinelibrary.com) and in volume 102, issue 6, pp. 1918-1927, has been retracted by agreement between the corresponding author Stanley Rapoport, co-author Richard Bazinet, the Journal's Editor-in-Chief Jörg Schulz, and John Wiley & Sons Ltd...
March 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28261875/retraction
#17
(no author information available yet)
Retraction: "Aging is associated with altered inflammatory, arachidonic acid cascade, and synaptic markers, influenced by epigenetic modifications, in the human frontal cortex" by Keleshian VL, Modi HR, Rapoport SI, Rao JS. The above article from Journal of Neurochemistry, published online on 17 February 2013 in Wiley Online Library (wileyonlinelibrary.com) and in volume 121, issue 1, pp. 63-73, has been retracted by agreement between the corresponding author Stanley Rapoport, the Journal's Editor-in-Chief, Jörg Schulz, and John Wiley & Sons Ltd...
March 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28251650/mechanisms-of-neuronal-migration-in-the-adult-brain
#18
REVIEW
Naoko Kaneko, Masato Sawada, Kazunobu Sawamoto
Adult neurogenesis was first observed nearly 60 years ago, and it has since grown into an important neurochemistry research field. Much recent research has focused on the treatment of brain diseases through neuronal regeneration with endogenously generated neurons. In the adult brain, immature neurons called neuroblasts are continuously generated in the ventricular-subventricular zone (V-SVZ). These neuroblasts migrate rapidly through the rostral migratory stream to the olfactory bulb, where they mature and are integrated into the neuronal circuitry...
March 2, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28224681/modeling-human-methamphetamine-use-patterns-in-mice-chronic-and-binge-methamphetamine-exposure-reward-function-and-neurochemistry
#19
James P Kesby, Ariel Chang, Athina Markou, Svetlana Semenova
Different methamphetamine use patterns in human subjects may contribute to inconsistent findings regarding the effects of methamphetamine abuse on brain and behavior. The present study investigated whether human-derived chronic and binge methamphetamine use patterns have differential effects on reward and neurochemistry in mice. Brain reward function in mice was evaluated during acute/prolonged withdrawal, and in response to methamphetamine challenge using the intracranial self-stimulation procedure. Brain dopaminergic, serotonergic and glutamatergic neurochemistry was determined with high-performance liquid chromatography...
February 21, 2017: Addiction Biology
https://www.readbyqxmd.com/read/28224658/predictive-meta-regressions-relating-mercury-tissue-concentrations-of-freshwater-piscivorous-mammals
#20
Kristin M Eccles, Philippe J Thomas, Hing Man Chan
Mercury (Hg) is a pollutant of global concern. Sentinel species such as river otter (Lontra canadensis) and mink (Neovison vison) are often used to monitor environmental concentrations in freshwater ecosystems. Tissue total Hg (THg) concentrations are frequently used as biomarkers of exposure. However, there is no comprehensive model relating Hg tissue concentrations in different tissues, making interstudy comparisons challenging. Our objective was to establish conversion factors relating fur, brain, liver, kidney, and muscle THg concentrations using mean concentrations and standard errors reported in the literature...
February 22, 2017: Environmental Toxicology and Chemistry
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