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https://www.readbyqxmd.com/read/28110215/neuroprotective-action-of-n-acetyl-serotonin-in-oxidative-stress-induced-apoptosis-through-the-activation-of-both-trkb-creb-bdnf-pathway-and-akt-nrf2-antioxidant-enzyme-in-neuronal-cells
#1
Jae-Myung Yoo, Bo Dam Lee, Dai-Eun Sok, Jin Yuel Ma, Mee Ree Kim
N-acetyl serotonin (NAS) as a melatonin precursor has neuroprotective actions. Nonetheless, it is not clarified how NAS protects neuronal cells against oxidative stress. Recently, we have reported that N-palmitoyl serotonins possessed properties of antioxidants and neuroprotection. Based on those, we hypothesized that NAS, a N-acyl serotonin, may have similar actions in oxidative stress-induced neuronal cells, and examined the effects of NAS based on in vitro and in vivo tests. NAS dose-dependently inhibited oxidative stress-induced cell death in HT-22 cells...
January 6, 2017: Redox Biology
https://www.readbyqxmd.com/read/28109982/altered-glutamate-metabolism-contributes-to-antiepileptogenic-effects-in-the-progression-from-focal-seizure-to-generalized-seizure-by-low-frequency-stimulation-in-the-ventral-hippocampus
#2
Hong-Liu Sun, Wei Zhu, Yu-Rong Zhang, Xiao-Hong Pan, Jun-Ru Zhang, Xiang-Ming Chen, Yu-Xia Liu, Shu-Cui Li, Qiao-Yun Wang, Da-Ping Deng
As a promising method for treating intractable epilepsy, the inhibitory effect of low-frequency stimulation (LFS) is well known, although its mechanisms remain unclear. Excessive levels of cerebral glutamate are considered a crucial factor for epilepsy. Therefore, we designed experiments to investigate the crucial parts of the glutamate cycle. We evaluated glutamine synthetase (GS, metabolizes glutamate), glutaminase (synthesizes glutamate), and glutamic acid decarboxylase (GAD, a γ-aminobutyric acid [GABA] synthetase) in different regions of the brain, including the dentate gyrus (DG), CA3, and CA1 subregions of the hippocampus, and the cortex, using western blots, immunohistochemistry, and enzyme activity assays...
January 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28106557/blunted-respiratory-responses-in%C3%A2-the%C3%A2-streptozotocin-induced-alzheimer-s-disease-rat-model
#3
Dalton L Ebel, Christopher G Torkilsen, Tim D Ostrowski
Alzheimer's disease (AD) is known for the progressive decline of cognition and memory. In addition to these disease-defining symptoms, impairment of respiratory function is frequently observed and often expressed by sleep-disordered breathing or reduced ability to adjust respiration when oxygen demand is elevated. The mechanisms for this are widely unknown. Postmortem analysis from the brainstem of AD patients reveals pathological alterations, including in nuclei responsible for respiratory control. In this study, we analyzed respiratory responses and morphological changes in brainstem nuclei following intracerebroventricular (ICV) injections of streptozotocin (STZ), a rat model commonly used to mimic sporadic AD...
January 20, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28104542/hippocampal-morphology-and-cognitive-functions-in-community-dwelling-older-people-the-lothian-birth-cohort-1936
#4
Maria Del Carmen Valdés Hernández, Simon R Cox, Jaeil Kim, Natalie A Royle, Susana Muñoz Maniega, Alan J Gow, Devasuda Anblagan, Mark E Bastin, Jinah Park, John M Starr, Joanna M Wardlaw, Ian J Deary
Structural measures of the hippocampus have been linked to a variety of memory processes and also to broader cognitive abilities. Gross volumetry has been widely used, yet the hippocampus has a complex formation, comprising distinct subfields which may be differentially sensitive to the deleterious effects of age, and to different aspects of cognitive performance. However, a comprehensive analysis of multidomain cognitive associations with hippocampal deformations among a large group of cognitively normal older adults is currently lacking...
December 21, 2016: Neurobiology of Aging
https://www.readbyqxmd.com/read/28104085/direct-current-stimulation-modulates-ltp-and-ltd-activity-dependence-and-dendritic-effects
#5
Greg Kronberg, Morgan Bridi, Ted Abel, Marom Bikson, Lucas C Parra
BACKGROUND: Transcranial direct current stimulation (tDCS) has been reported to improve various forms of learning in humans. Stimulation is often applied during training, producing lasting enhancements that are specific to the learned task. These learning effects are thought to be mediated by altered synaptic plasticity. However, the effects of DCS during the induction of endogenous synaptic plasticity remain largely unexplored. OBJECTIVE/HYPOTHESIS: Here we are interested in the effects of DCS applied during synaptic plasticity induction...
January 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28100752/differential-vulnerability-of-ca1-versus-ca3-pyramidal-neurons-after-ischemia-possible-relationship-to-sources-of-zn2-accumulation-and-its-entry-into-and-prolonged-effects-on-mitochondria
#6
Yuliya V Medvedeva, Sung G Ji, Hong Z Yin, John H Weiss
: Excitotoxic mechanisms contribute to the degeneration of hippocampal pyramidal neurons after recurrent seizures and brain ischemia. However, susceptibility differs, with CA1 neurons degenerating preferentially after global ischemia and CA3 neurons after limbic seizures. Whereas most studies address contributions of excitotoxic Ca(2+) entry, it is apparent that Zn(2+) also contributes, reflecting accumulation in neurons either after synaptic release and entry through postsynaptic channels or upon mobilization from intracellular Zn(2+)-binding proteins such as metallothionein-III (MT-III)...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28100490/amino-terminal-domains-of-kainate-receptors-determine-the-differential-dependence-on-neto-auxiliary-subunits-for-trafficking
#7
Nengyin Sheng, Yun Stone Shi, Roger A Nicoll
The kainate receptor (KAR), a subtype of glutamate receptor, mediates excitatory synaptic responses at a subset of glutamatergic synapses. However, the molecular mechanisms underlying the trafficking of its different subunits are poorly understood. Here we use the CA1 hippocampal pyramidal cell, which lacks KAR-mediated synaptic currents, as a null background to determine the minimal requirements for the extrasynaptic and synaptic expression of the GluK2 subunit. We find that the GluK2 receptor itself, in contrast to GluK1, traffics to the neuronal surface and synapse efficiently and the auxiliary subunits Neto1 and Neto2 caused no further enhancement of these two trafficking processes...
January 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28099324/interaction-of-isoflurane-tumor-necrosis-factor-%C3%AE-and-%C3%AE-amyloid-on-long-term-potentiation-in-rat-hippocampal-slices
#8
Ran Zhou, Philip Bickler
BACKGROUND: The relationship between inhalational anesthetics such as isoflurane and cognitive impairment in the elderly is controversial. Both β-amyloid peptide (Aβ), associated with Alzheimer disease, and tumor necrosis factor-α (TNF-α), a proinflammatory stress-related peptide, impair the synaptic function. We hypothesized that transient exposure to isoflurane and these peptides would impair synaptic function, manifest as a depression of long-term potentiation (LTP) and paired pulse facilitation (PPF), in the rat hippocampus...
February 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28098162/novel-genetic-loci-associated-with-hippocampal-volume
#9
Derrek P Hibar, Hieab H H Adams, Neda Jahanshad, Ganesh Chauhan, Jason L Stein, Edith Hofer, Miguel E Renteria, Joshua C Bis, Alejandro Arias-Vasquez, M Kamran Ikram, Sylvane Desrivières, Meike W Vernooij, Lucija Abramovic, Saud Alhusaini, Najaf Amin, Micael Andersson, Konstantinos Arfanakis, Benjamin S Aribisala, Nicola J Armstrong, Lavinia Athanasiu, Tomas Axelsson, Ashley H Beecham, Alexa Beiser, Manon Bernard, Susan H Blanton, Marc M Bohlken, Marco P Boks, Janita Bralten, Adam M Brickman, Owen Carmichael, M Mallar Chakravarty, Qiang Chen, Christopher R K Ching, Vincent Chouraki, Gabriel Cuellar-Partida, Fabrice Crivello, Anouk Den Braber, Nhat Trung Doan, Stefan Ehrlich, Sudheer Giddaluru, Aaron L Goldman, Rebecca F Gottesman, Oliver Grimm, Michael E Griswold, Tulio Guadalupe, Boris A Gutman, Johanna Hass, Unn K Haukvik, David Hoehn, Avram J Holmes, Martine Hoogman, Deborah Janowitz, Tianye Jia, Kjetil N Jørgensen, Nazanin Karbalai, Dalia Kasperaviciute, Sungeun Kim, Marieke Klein, Bernd Kraemer, Phil H Lee, David C M Liewald, Lorna M Lopez, Michelle Luciano, Christine Macare, Andre F Marquand, Mar Matarin, Karen A Mather, Manuel Mattheisen, David R McKay, Yuri Milaneschi, Susana Muñoz Maniega, Kwangsik Nho, Allison C Nugent, Paul Nyquist, Loes M Olde Loohuis, Jaap Oosterlaan, Martina Papmeyer, Lukas Pirpamer, Benno Pütz, Adaikalavan Ramasamy, Jennifer S Richards, Shannon L Risacher, Roberto Roiz-Santiañez, Nanda Rommelse, Stefan Ropele, Emma J Rose, Natalie A Royle, Tatjana Rundek, Philipp G Sämann, Arvin Saremi, Claudia L Satizabal, Lianne Schmaal, Andrew J Schork, Li Shen, Jean Shin, Elena Shumskaya, Albert V Smith, Emma Sprooten, Lachlan T Strike, Alexander Teumer, Diana Tordesillas-Gutierrez, Roberto Toro, Daniah Trabzuni, Stella Trompet, Dhananjay Vaidya, Jeroen Van der Grond, Sven J Van der Lee, Dennis Van der Meer, Marjolein M J Van Donkelaar, Kristel R Van Eijk, Theo G M Van Erp, Daan Van Rooij, Esther Walton, Lars T Westlye, Christopher D Whelan, Beverly G Windham, Anderson M Winkler, Katharina Wittfeld, Girma Woldehawariat, Christiane Wolf, Thomas Wolfers, Lisa R Yanek, Jingyun Yang, Alex Zijdenbos, Marcel P Zwiers, Ingrid Agartz, Laura Almasy, David Ames, Philippe Amouyel, Ole A Andreassen, Sampath Arepalli, Amelia A Assareh, Sandra Barral, Mark E Bastin, Diane M Becker, James T Becker, David A Bennett, John Blangero, Hans van Bokhoven, Dorret I Boomsma, Henry Brodaty, Rachel M Brouwer, Han G Brunner, Randy L Buckner, Jan K Buitelaar, Kazima B Bulayeva, Wiepke Cahn, Vince D Calhoun, Dara M Cannon, Gianpiero L Cavalleri, Ching-Yu Cheng, Sven Cichon, Mark R Cookson, Aiden Corvin, Benedicto Crespo-Facorro, Joanne E Curran, Michael Czisch, Anders M Dale, Gareth E Davies, Anton J M De Craen, Eco J C De Geus, Philip L De Jager, Greig I De Zubicaray, Ian J Deary, Stéphanie Debette, Charles DeCarli, Norman Delanty, Chantal Depondt, Anita DeStefano, Allissa Dillman, Srdjan Djurovic, Gary Donohoe, Wayne C Drevets, Ravi Duggirala, Thomas D Dyer, Christian Enzinger, Susanne Erk, Thomas Espeseth, Iryna O Fedko, Guillén Fernández, Luigi Ferrucci, Simon E Fisher, Debra A Fleischman, Ian Ford, Myriam Fornage, Tatiana M Foroud, Peter T Fox, Clyde Francks, Masaki Fukunaga, J Raphael Gibbs, David C Glahn, Randy L Gollub, Harald H H Göring, Robert C Green, Oliver Gruber, Vilmundur Gudnason, Sebastian Guelfi, Asta K Håberg, Narelle K Hansell, John Hardy, Catharina A Hartman, Ryota Hashimoto, Katrin Hegenscheid, Andreas Heinz, Stephanie Le Hellard, Dena G Hernandez, Dirk J Heslenfeld, Beng-Choon Ho, Pieter J Hoekstra, Wolfgang Hoffmann, Albert Hofman, Florian Holsboer, Georg Homuth, Norbert Hosten, Jouke-Jan Hottenga, Matthew Huentelman, Hilleke E Hulshoff Pol, Masashi Ikeda, Clifford R Jack, Mark Jenkinson, Robert Johnson, Erik G Jönsson, J Wouter Jukema, René S Kahn, Ryota Kanai, Iwona Kloszewska, David S Knopman, Peter Kochunov, John B Kwok, Stephen M Lawrie, Hervé Lemaître, Xinmin Liu, Dan L Longo, Oscar L Lopez, Simon Lovestone, Oliver Martinez, Jean-Luc Martinot, Venkata S Mattay, Colm McDonald, Andrew M McIntosh, Francis J McMahon, Katie L McMahon, Patrizia Mecocci, Ingrid Melle, Andreas Meyer-Lindenberg, Sebastian Mohnke, Grant W Montgomery, Derek W Morris, Thomas H Mosley, Thomas W Mühleisen, Bertram Müller-Myhsok, Michael A Nalls, Matthias Nauck, Thomas E Nichols, Wiro J Niessen, Markus M Nöthen, Lars Nyberg, Kazutaka Ohi, Rene L Olvera, Roel A Ophoff, Massimo Pandolfo, Tomas Paus, Zdenka Pausova, Brenda W J H Penninx, G Bruce Pike, Steven G Potkin, Bruce M Psaty, Simone Reppermund, Marcella Rietschel, Joshua L Roffman, Nina Romanczuk-Seiferth, Jerome I Rotter, Mina Ryten, Ralph L Sacco, Perminder S Sachdev, Andrew J Saykin, Reinhold Schmidt, Helena Schmidt, Peter R Schofield, Sigurdur Sigursson, Andrew Simmons, Andrew Singleton, Sanjay M Sisodiya, Colin Smith, Jordan W Smoller, Hilkka Soininen, Vidar M Steen, David J Stott, Jessika E Sussmann, Anbupalam Thalamuthu, Arthur W Toga, Bryan J Traynor, Juan Troncoso, Magda Tsolaki, Christophe Tzourio, Andre G Uitterlinden, Maria C Valdés Hernández, Marcel Van der Brug, Aad van der Lugt, Nic J A van der Wee, Neeltje E M Van Haren, Dennis van 't Ent, Marie-Jose Van Tol, Badri N Vardarajan, Bruno Vellas, Dick J Veltman, Henry Völzke, Henrik Walter, Joanna M Wardlaw, Thomas H Wassink, Michael E Weale, Daniel R Weinberger, Michael W Weiner, Wei Wen, Eric Westman, Tonya White, Tien Y Wong, Clinton B Wright, Ronald H Zielke, Alan B Zonderman, Nicholas G Martin, Cornelia M Van Duijn, Margaret J Wright, W T Longstreth, Gunter Schumann, Hans J Grabe, Barbara Franke, Lenore J Launer, Sarah E Medland, Sudha Seshadri, Paul M Thompson, M Arfan Ikram
The hippocampal formation is a brain structure integrally involved in episodic memory, spatial navigation, cognition and stress responsiveness. Structural abnormalities in hippocampal volume and shape are found in several common neuropsychiatric disorders. To identify the genetic underpinnings of hippocampal structure here we perform a genome-wide association study (GWAS) of 33,536 individuals and discover six independent loci significantly associated with hippocampal volume, four of them novel. Of the novel loci, three lie within genes (ASTN2, DPP4 and MAST4) and one is found 200 kb upstream of SHH...
January 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28096497/bdnf-regains-function-in-hippocampal-long-term-potentiation-deficits-caused-by-diencephalic-damage
#10
Lindsey C Vedder, Lisa M Savage
Thiamine deficiency (TD), commonly associated with chronic alcoholism, leads to diencephalic damage, hippocampal dysfunction, and spatial learning and memory deficits. We show a decrease in the magnitude of long-term potentiation (LTP) and paired-pulse facilitation (PPF) at CA3-CA1 synapses, independent of sex, following diencephalic damage induced by TD in rats. Thus, despite a lack of extensive hippocampal cell loss, diencephalic brain damage down-regulates plastic processes within the hippocampus, likely contributing to impaired hippocampal-dependent behaviors...
February 2017: Learning & Memory
https://www.readbyqxmd.com/read/28093473/differential-regulation-of-nmda-receptor-mediated-transmission-by-sk-channels-underlies-dorsal-ventral-differences-in-dynamics-of-schaffer-collateral-synaptic-function
#11
Walter E Babiec, Shekib A Jami, Ryan Guglietta, Patrick B Chen, Thomas J O'Dell
: Behavioral, physiological, and anatomical evidence indicates that the dorsal and ventral zones of the hippocampus have distinct roles in cognition. How the unique functions of these zones might depend on differences in synaptic and neuronal function arising from the strikingly different gene expression profiles exhibited by dorsal and ventral CA1 pyramidal cells is unclear. To begin to address this question, we investigated the mechanisms underlying differences in synaptic transmission and plasticity at dorsal and ventral Schaffer collateral (SC) synapses in the mouse hippocampus...
January 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28093219/a-mixed-glucocorticoid-mineralocorticoid-receptor-modulator-dampens-endocrine-and-hippocampal-stress-responsivity-in-male-rats
#12
Elizabeth T Nguyen, Joshua Streicher, Sarah Berman, Jody L Caldwell, Valentina Ghisays, Christina M Estrada, Aynara C Wulsin, Matia B Solomon
Aberrant glucocorticoid secretion is implicated in the pathophysiology of stress-related disorders (i.e., depression, anxiety). Glucocorticoids exert biological effects via mineralocorticoid (MR) and glucocorticoid (GR) receptors. Previous data from our laboratory indicate that GR antagonism/modulation (i.e., mifepristone, CORT 108297) regulate endocrine, behavioral, and central stress responses. Because of the dynamic interplay between MR and GR on HPA axis regulation and emotionality, compounds targeting both receptors are of interest for stress-related pathology...
January 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28093211/pharmacological-properties-of-sak3-a-novel-t-type-voltage-gated-ca-2-channel-enhancer
#13
Yasushi Yabuki, Kazuya Matsuo, Hisanao Izumi, Hidaka Haga, Takashi Yoshida, Minoru Wakamori, Akira Kakehi, Kenji Sakimura, Takaichi Fukuda, Kohji Fukunaga
T-type voltage-gated Ca(2+) channels (T-VGCCs) function in the pathophysiology of epilepsy, pain and sleep. However, their role in cognitive function remains unclear. We previously reported that the cognitive enhancer ST101, which stimulates T-VGCCs in rat cortical slices, was a potential Alzheimer's disease therapeutic. Here, we introduce a more potent T-VGCC enhancer, SAK3 (ethyl 8'-methyl-2',4-dioxo-2-(piperidin-1-yl)-2'H-spiro[cyclopentane-1,3'-imidazo [1,2-a]pyridin]-2-ene-3-carboxylate), and characterize its pharmacological properties in brain...
January 13, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28091722/hyperphosphorylated-tau-causes-reduced-hippocampal-ca1-excitability-by-relocating-the-axon-initial-segment
#14
Robert John Hatch, Yan Wei, Di Xia, Jürgen Götz
Hyperphosphorylated tau has a critical role in tauopathies such as Alzheimer's disease and frontotemporal dementia, impairing neuronal function and eventually leading to neurodegeneration. A critical role for tau is supported by studies in transgenic mouse models that express the P301L tau mutation found in cases of familial frontotemporal dementia, with the accumulation of hyperphosphorylated tau in the hippocampus causing reductions in hippocampal long-term potentiation and impairments in spatial learning and memory...
January 16, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28089516/environmental-geometry-aligns-the-hippocampal-map-during-spatial-reorientation
#15
Alex T Keinath, Joshua B Julian, Russell A Epstein, Isabel A Muzzio
When a navigator's internal sense of direction is disrupted, she must rely on external cues to regain her bearings, a process termed spatial reorientation. Extensive research has demonstrated that the geometric shape of the environment exerts powerful control over reorientation behavior, but the neural and cognitive mechanisms underlying this phenomenon are not well understood. Whereas some theories claim that geometry controls behavior through an allocentric mechanism potentially tied to the hippocampus, others postulate that disoriented navigators reach their goals by using an egocentric view-matching strategy...
January 11, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28088928/multi-modal-mri-investigation-of-volumetric-and-microstructural-changes-in-the-hippocampus-and-its-subfields-in-mild-cognitive-impairment-alzheimer-s-disease-and-dementia-with-lewy-bodies
#16
Elijah Mak, Silvy Gabel, Li Su, Guy B Williams, Robert Arnold, Luca Passamonti, Patricia Vazquez Rodríguez, Ajenthan Surendranathan, W Richard Bevan-Jones, James B Rowe, John T O'Brien
BACKGROUND: Volumetric atrophy and microstructural alterations in diffusion tensor imaging (DTI) measures of the hippocampus have been reported in people with Alzheimer's disease (AD) and mild cognitive impairment (MCI). However, no study to date has jointly investigated concomitant microstructural and volumetric changes of the hippocampus in dementia with Lewy bodies (DLB). METHODS: A total of 84 subjects (23 MCI, 17 DLB, 14 AD, and 30 healthy controls) were recruited for a multi-modal imaging (3T MRI and DTI) study that included neuropsychological evaluation...
January 16, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28087979/rapid-antidepressant-effect-of-ketamine-correlates-with-astroglial-plasticity-in-the-hippocampus
#17
Maryam Ardalan, Ali H Rafati, Jens R Nyengaard, Gregers Wegener
BACKGROUND AND PURPOSE: Astroglia contributes to the pathophysiology of major depression and the action of antidepressant drugs through modulating synaptic plasticity; therefore, present study investigated whether fast antidepressant action of ketamine is reflected in the rapid alteration of the astrocytes morphology in a genetic animal model of depression. EXPERIMENTAL APPROACH: S-Ketamine (15 mg/kg) or saline was administered as a single injection to Flinders Line (FSL/FRL) rats...
January 14, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28087765/synapsin-ii-regulation-of-gabaergic-synaptic-transmission-is-dependent-on-interneuron-subtype
#18
Pedro Feliciano, Heidi Matos, Rodrigo Andrade, Maria Bykhovskaia
: Synapsins are epilepsy susceptibility genes that encode phosphoproteins reversibly associated with synaptic vesicles. Synapsin II (SynII) gene deletion produces a deficit in inhibitory synaptic transmission, and this defect is thought to cause epileptic activity. We systematically investigated how SynII affects synchronous and asynchronous release components of inhibitory transmission in the CA1 region of the mouse hippocampus. We found that the asynchronous GABAergic release component is diminished in SynII deleted (SynII(-)) slices...
January 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28079889/deletion-of-the-bh3-only-protein-noxa-alters-electrographic-seizures-but-does-not-protect-against-hippocampal-damage-after-status-epilepticus-in-mice
#19
Naoki Ichikawa, Mariana Alves, Shona Pfeiffer, Elena Langa, Yasmina E Hernández-Santana, Hidenori Suzuki, Jochen Hm Prehn, Tobias Engel, David C Henshall
Several members of the Bcl-2 gene family are dysregulated in human temporal lobe epilepsy and animal studies show that genetic deletion of some of these proteins influence electrographic seizure responses to chemoconvulsants and associated brain damage. The BH3-only proteins form a subgroup comprising direct activators of Bax-Bak that are potently proapoptotic and a number of weaker proapoptotic BH3-only proteins that act as sensitizers by neutralization of antiapoptotic Bcl-2 family members. Noxa was originally characterized as a weaker proapoptotic, 'sensitizer' BH3-only protein, although recent evidence suggests it too may be potently proapoptotic...
January 12, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28079061/progressive-decline-in-hippocampal-ca1-volume-in-individuals-at-ultra-high-risk-for-psychosis-who-do-not-remit-findings-from-the-longitudinal-youth-at-risk-study
#20
New Fei Ho, Daphne J Holt, Mike Cheung, Juan Eugenio Iglesias, Alex Goh, Mingyuan Wang, Joseph Kw Lim, Joshua de Souza, Joann S Poh, Yuen Mei See, Alison R Adcock, Stephen J Wood, Michael Wl Chee, Jimmy Lee, Juan Zhou
Most individuals identified as ultra high-risk for psychosis (UHR) do not develop frank psychosis. They continue to exhibit subthreshold symptoms, or go on to fully remit. Prior work has shown that the volume of CA1, a subfield of the hippocampus, is selectively reduced in the early stages of schizophrenia. Here, we aimed to determine whether patterns of volume change of CA1 are different in UHR individuals who do or do not achieve symptomatic remission. Structural MRI scans were acquired at baseline and at 1-2 follow-up time points (at 12-month intervals) from 147 UHR and healthy control subjects...
January 12, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
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