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https://www.readbyqxmd.com/read/28102850/japanese-encephalitis-virus-induces-human-neural-stem-progenitor-cell-death-by-elevating-grp78-phb-and-hnrnpc-through-er-stress
#1
Sriparna Mukherjee, Noopur Singh, Nabonita Sengupta, Mahar Fatima, Pankaj Seth, Anita Mahadevan, Susarla Krishna Shankar, Arindam Bhattacharyya, Anirban Basu
Japanese encephalitis virus (JEV), which is a causative agent of sporadic encephalitis, harbours itself inside the neural stem/progenitor cells. It is a well-known fact that JEV infects neural stem/progenitor cells and decreases their proliferation capacity. With mass spectrometry-based quantitative proteomic study, it is possible to reveal the impact of virus on the stem cells at protein level. Our aim was to perceive the stem cell proteomic response upon viral challenge. We performed a two-dimensional gel electrophoresis-based proteomic study of the human neural stem cells (hNS1 cell line) post JEV infection and found that 13 proteins were differentially expressed...
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28102842/zika-virus-elicits-p53-activation-and-genotoxic-stress-in-human-neural-progenitors-similar-to-mutations-involved-in-severe-forms-of-genetic-microcephaly-and-p53
#2
Vincent El Ghouzzi, Federico T Bianchi, Ivan Molineris, Bryan C Mounce, Gaia E Berto, Malgorzata Rak, Sophie Lebon, Laetitia Aubry, Chiara Tocco, Marta Gai, Alessandra Ma Chiotto, Francesco Sgrò, Gianmarco Pallavicini, Etienne Simon-Loriere, Sandrine Passemard, Marco Vignuzzi, Pierre Gressens, Ferdinando Di Cunto
No abstract text is available yet for this article.
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28100219/increased-amygdala-reactivity-following-early-life-stress-a-potential-resilience-enhancer-role
#3
Tetsuya Yamamoto, Shigeru Toki, Greg J Siegle, Masahiro Takamura, Yoshiyuki Takaishi, Shinpei Yoshimura, Go Okada, Tomoya Matsumoto, Takashi Nakao, Hiroyuki Muranaka, Yumiko Kaseda, Tsuneji Murakami, Yasumasa Okamoto, Shigeto Yamawaki
BACKGROUND: Amygdala hyper-reactivity is sometimes assumed to be a vulnerability factor that predates depression; however, in healthy people, who experience early life stress but do not become depressed, it may represent a resilience mechanism. We aimed to test these hypothesis examining whether increased amygdala activity in association with a history of early life stress (ELS) was negatively or positively associated with depressive symptoms and impact of negative life event stress in never-depressed adults...
January 18, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28098344/inhibition-of-oxytocin-and-vasopressin-neuron-activity-in-rat-hypothalamic-paraventricular-nucleus-by-relaxin-3-rxfp3-signalling
#4
Alan Kania, Anna Czerw, Agnieszka Grabowiecka, Camila de Ávila, Tomasz Blasiak, Zenon Rajfur, Marian H Lewandowski, Grzegorz Hess, Elena Timofeeva, Andrew L Gundlach, Anna Blasiak
KEY-POINTS: Relaxin-3 is a stress-responsive neuropeptide that acts at its cognate receptor, RXFP3, to alter behaviours including feeding. In this study, we have demonstrated a direct, RXFP3-dependent, inhibitory action of relaxin-3 on oxytocin and vasopressin PVN neuron electrical activity, a putative cellular mechanism of orexinergic actions of relaxin-3. We observed a Gαi/o -protein-dependent inhibitory influence of selective RXFP3 activation on PVN neuronal activity in vitro and demonstrated a direct action of RXFP3 activation on oxytocin and vasopressin PVN neurons, confirmed by their abundant expression of RXFP3 mRNA...
January 18, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28097079/symptomatic-unilateral-spondylolysis-associated-with-nonspondylolytic-lateral-clefts-in-adults-review-of-an-infrequently-reported-pathology
#5
REVIEW
Vibhu Krishnan Viswanathan, Sakthivel Rajan Rajaram Manoharan, Surabhi Subramanian
Nonspondylolytic lateral clefts of the lumbar neural arch (laminolysis and pediculolysis) are rare pathologies that usually occur consequent to repetitive stress injuries in patients with unilateral spondylolysis. These lesions are different from the usual bilateral spondylolytic defects, and their management depends upon the chronicity and the type of bony defect. We hereby discuss the verdict of current literature on underlying pathomechanics and ideal management guidelines of these rare lesions.
December 12, 2016: Curēus
https://www.readbyqxmd.com/read/28096186/translation-reprogramming-is-an-evolutionarily-conserved-driver-of-phenotypic-plasticity-and-therapeutic-resistance-in-melanoma
#6
Paola Falletta, Luis Sanchez-Del-Campo, Jagat Chauhan, Maike Effern, Amy Kenyon, Christopher J Kershaw, Robert Siddaway, Richard Lisle, Rasmus Freter, Matthew J Daniels, Xin Lu, Thomas Tüting, Mark Middleton, Francesca M Buffa, Anne E Willis, Graham Pavitt, Ze'ev A Ronai, Tatjana Sauka-Spengler, Michael Hölzel, Colin R Goding
The intratumor microenvironment generates phenotypically distinct but interconvertible malignant cell subpopulations that fuel metastatic spread and therapeutic resistance. Whether different microenvironmental cues impose invasive or therapy-resistant phenotypes via a common mechanism is unknown. In melanoma, low expression of the lineage survival oncogene microphthalmia-associated transcription factor (MITF) correlates with invasion, senescence, and drug resistance. However, how MITF is suppressed in vivo and how MITF-low cells in tumors escape senescence are poorly understood...
January 17, 2017: Genes & Development
https://www.readbyqxmd.com/read/28095914/vascular-mapping-of-the-retroauricular-skin-proposal-for-a-posterior-superior-surgical-incision-for-transcutaneous-bone-conduction-hearing-implants
#7
Adam Perenyi, Zsofia Bere, Janos Jarabin, Balazs Sztano, Edit Kukla, Ziad Bikhazi, Laszlo Tiszlavicz, Ferenc Toth, Jozsef Geza Kiss, Laszlo Rovo
BACKGROUND: Passive transcutaneous osseointegrated hearing implant systems have become increasingly popular more recently. The area over the implant is vulnerable due to vibration and pressure from the externally worn sound processor. Good perfusion and neural integrity has the potential to reduce complications. The authors' objective was to determine the ideal surgical exposure to maintain perfusion and neural integrity and decrease surgical time as a result of reduced bleeding. METHODS: The vascular anatomy of the temporal-parietal soft tissue was examined in a total of 50 subjects...
January 17, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28095318/interoceptive-modulation-of-neuroendocrine-emotional-and-hypophagic-responses-to-stress
#8
REVIEW
James W Maniscalco, Linda Rinaman
Periods of caloric deficit substantially attenuate many centrally mediated responses to acute stress, including neural drive to the hypothalamic-pituitary-adrenal (HPA) axis, anxiety-like behavior, and stress-induced suppression of food intake (i.e., stress hypophagia). It is posited that this stress response plasticity supports food foraging and promotes intake during periods of negative energy balance, even in the face of other internal or external threats, thereby increasing the likelihood that energy stores are repleted...
January 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28093705/manipulation-of-oxygen-and-endoplasmic-reticulum-stress-factors-as-possible-interventions-for-treatment-of-multiple-sclerosis-evidence-for-and-against
#9
Paul Eggleton, Gary R Smerdon, Janet E Holley, Nicholas J Gutowski
Multiple sclerosis (MS) is normally considered a chronic inflammatory disease of the central nervous system (CNS), where T-cells breaching the blood brain barrier react against proteins of the axonal myelin sheaths, leading to focal plaques and demyelination in the brain and spinal cord. Many current therapies are immunosuppressive in nature and are designed to target the immune system at an early stage of the disease. But there is no cure and MS may evolve into a neurodegenerative disease, where immunomodulatory treatments appear less effective...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28089705/so-as-we-worry-we-weigh-visible-burrow-system-stress-and-visceral-adiposity
#10
REVIEW
Michelle T Foster
The visible borrow system (VBS) simulates a natural rodent habitat that supports genuine stress provoking social interactions. This model allows investigation of behavioral, neural and endocrine alterations caused by chronic stress. The Sakai lab further used this model to investigate metabolic outcomes of stress in relation to dominance hierarchies formed within the VBS. Communal social conflict occurs among all VBS rats, but only the SUB rats succumb to the redistribution of lipids in the visceral cavity and consequent metabolic dysregulation, such as hyper-insulinemia...
January 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28087128/intranasal-oxytocin-to-prevent-posttraumatic-stress-disorder-symptoms-a-randomized-controlled-trial-in-emergency-department-patients
#11
Mirjam van Zuiden, Jessie L Frijling, Laura Nawijn, Saskia B J Koch, J Carel Goslings, Jan S Luitse, Tessa H Biesheuvel, Adriaan Honig, Dick J Veltman, Miranda Olff
BACKGROUND: There are currently few preventive interventions available for posttraumatic stress disorder (PTSD). Intranasal oxytocin administration early after trauma may prevent PTSD, because oxytocin administration was previously found to beneficially impact PTSD vulnerability factors, including neural fear responsiveness, peripheral stress reactivity, and socioemotional functioning. Therefore, we investigated the effects of intranasal oxytocin administration early after trauma on subsequent clinician-rated PTSD symptoms...
December 8, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/28079146/nitrosative-stress-induced-disruption-of-baroreflex-neural-circuits-in-a-rat-model-of-hepatic-encephalopathy-a-dti-study
#12
Ching-Yi Tsai, Chia-Hao Su, Julie Y H Chan, Samuel H H Chan
The onset of hepatic encephalopathy (HE) in liver failure is associated with high mortality; the underlying mechanism is undecided. Here we report that in an acute liver failure model employing intraperitoneal administration of thioacetamide in Sprague-Dawley rats, diffusion weighted imaging revealed a progressive reduction in apparent diffusion coefficient in the brain stem. Diffusion tensor imaging further showed that the connectivity between nucleus tractus solitarii (NTS), the terminal site of baroreceptor afferents in brain stem and rostral ventrolateral medulla (RVLM), the origin of sympathetic innervation of blood vessels, was progressively disrupted until its disappearance, coincidental with the irreversible cessation of baroreflex-mediated sympathetic vasomotor tone signifying clinically the occurrence of brain death...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28077722/higher-heart-rate-variability-is-associated-with-ventromedial-prefrontal-cortex-activity-and-increased-resistance-to-temptation-in-dietary-self-control-challenges
#13
Silvia U Maier, Todd A Hare
: Higher levels of self-control in decision making have been linked to better psychosocial and physical health. A similar link to health outcomes has been reported for heart-rate variability (HRV), a marker of physiological flexibility. Here, we sought to link these two, largely separate, research domains by testing the hypothesis that greater HRV would be associated with better dietary self-control in humans. Specifically, we examined whether total HRV at sedentary rest (measured as the SD of normal-to-normal intervals) can serve as a biomarker for the neurophysiological adaptability that putatively underlies self-controlled behavior...
January 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28077708/dynamic-shifts-in-large-scale-brain-network-balance-as-a-function-of-arousal
#14
Christina B Young, Gal Raz, Daphne Everaerd, Christian F Beckmann, Indira Tendolkar, Talma Hendler, Guillén Fernández, Erno J Hermans
: The ability to temporarily prioritize rapid and vigilant reactions over slower higher-order cognitive functions is essential for adaptive responding to threat. This reprioritization is believed to reflect shifts in resource allocation between large-scale brain networks that support these cognitive functions, including the salience and executive control networks. However, how changes in communication within and between such networks dynamically unfold as a function of threat-related arousal remains unknown...
January 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28077245/a-systematic-review-of-adrenarche-as-a-sensitive-period-in-neurobiological-development-and-mental-health
#15
REVIEW
Michelle L Byrne, Sarah Whittle, Nandita Vijayakumar, Meg Dennison, Julian G Simmons, Nicholas B Allen
Substantial hormonal and neurobiological changes occur during puberty, and are widely argued to render this period of life a sensitive period in terms of risk for mental health problems. However, there is a paucity of research focusing on adrenarche, the earlier phase of pubertal development. Furthermore, there is a limited understanding of the association between adrenarche and neural development during this phase of life. We systematically reviewed research examining human adrenarcheal development as operationalized by hormonal levels of DHEA and DHEA-S, in relation to indices of mental health (Systematic Review 1)...
December 21, 2016: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28073366/oral-treatment-with-lactobacillus-rhamnosus-attenuates-behavioural-deficits-and-immune-changes-in-chronic-social-stress
#16
Aadil Bharwani, M Firoz Mian, Michael G Surette, John Bienenstock, Paul Forsythe
BACKGROUND: Stress-related disorders involve systemic alterations, including disruption of the intestinal microbial community. Given the putative connections between the microbiota, immunity, neural function, and behaviour, we investigated the potential for microbe-induced gut-to-brain signalling to modulate the impact of stress on host behaviour and immunoregulation. METHODS: Male C57BL/6 mice treated orally over 28 days with either Lactobacillus rhamnosus (JB-1) ™ or vehicle were subjected to chronic social defeat and assessed for alterations in behaviour and immune cell phenotype...
January 11, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28070973/dissociation-between-amygdala-and-bed-nucleus-of-the-stria-terminalis-during-threat-anticipation-in-female-post-traumatic-stress-disorder-patients
#17
Leonie Brinkmann, Christine Buff, Paula Neumeister, Sara V Tupak, Michael P I Becker, Martin J Herrmann, Thomas Straube
Feelings of uncontrollability and anxiety regarding possibly harmful events are key features of post-traumatic stress disorder (PTSD) symptomatology. Due to a lack of studies, the neural correlates of anticipatory anxiety in PTSD are still poorly understood. During functional magnetic resonance imaging, female PTSD patients with interpersonal violence trauma and healthy controls (HC) anticipated the temporally unpredictable presentation of aversive (human scream) or neutral sounds. Based on separate analysis models, we investigated phasic and sustained brain activations...
January 10, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28070873/animal-models-of-ptsd-a-critical-review
#18
Elizabeth I Flandreau, Mate Toth
The goals of animal research in post-traumatic stress disorder (PTSD) include better understanding the neurophysiological etiology of PTSD, identifying potential targets for novel pharmacotherapies, and screening drugs for their potential use as PTSD treatment in humans. Diagnosis of PTSD relies on a patient interview and, as evidenced by changes to the diagnostic criteria in the DSM-5, an adequate description of this disorder in humans is a moving target. Therefore, it may seem insurmountable to model the construct of PTSD in animals such as rodents...
January 10, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28070746/boundary-cap-neural-crest-stem-cells-promote-survival-of-mutant-sod1-motor-neurons
#19
Tanya Aggarwal, Jan Hoeber, Patrik Ivert, Svitlana Vasylovska, Elena N Kozlova
ALS is a devastating disease resulting in degeneration of motor neurons (MNs) in the brain and spinal cord. The survival of MNs strongly depends on surrounding glial cells and neurotrophic support from muscles. We previously demonstrated that boundary cap neural crest stem cells (bNCSCs) can give rise to neurons and glial cells in vitro and in vivo and have multiple beneficial effects on co-cultured and co-implanted cells, including neural cells. In this paper, we investigate if bNCSCs may improve survival of MNs harboring a mutant form of human SOD1 (SOD1(G93A)) in vitro under normal conditions and oxidative stress and in vivo after implantation to the spinal cord...
January 9, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28069738/fbxl5-inactivation-in-mouse-brain-induces-aberrant-proliferation-of-neural-stem-progenitor-cells
#20
Takayoshi Yamauchi, Masaaki Nishiyama, Toshiro Moroishi, Atsuki Kawamura, Keiichi I Nakayama
FBXL5 is the substrate recognition subunit of an SCF-type ubiquitin ligase that serves as a master regulator of iron metabolism in mammalian cells. We previously showed that mice with systemic deficiency of FBXL5 fail to sense intracellular iron levels and die in utero at embryonic day (E) 8.5 as a result of iron overload and subsequent oxidative stress. This early embryonic mortality has thus impeded study of the role of FBXL5 in brain development. We have now generated mice lacking FBXL5 specifically in Nestin-expressing neural stem-progenitor cells (NSPCs) in the brain...
January 9, 2017: Molecular and Cellular Biology
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