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https://www.readbyqxmd.com/read/28654462/depressed-gut-the-microbiota-diet-inflammation-trialogue-in-depression
#1
Judith K Daniels, Margreet Koopman, Sahar El Aidy
PURPOSE OF REVIEW: According to the WHO reports, around 350 billion people worldwide suffer from depression. Despite its high prevalence, the complex interaction of multiple mechanisms underlying depression still needs to be elucidated. RECENT FINDINGS: Over the course of the last few years, several neurobiological alterations have been linked to the development and maintenance of depression. One basic process that seems to link many of these findings is inflammation...
June 24, 2017: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/28653748/adaptive-dynamics-of-the-5-ht-systems-following-chronic-administration-of-selective-serotonin-reuptake-inhibitors-a-meta-analysis
#2
Stefan Fritze, Rainer Spanagel, Hamid R Noori
Selective serotonin reuptake inhibitors (SSRIs) are the most frequently prescribed antidepressants. However, a major concern is their delayed onset of action, which is hypothesized to be associated with the time required for serotonin (5-HT) autoreceptors to desensitize, which should be reflected by actual neurochemical changes. Numerous in vivo microdialysis studies have been published that report on 5-HT levels in different brain sites following SSRI administration. Here we performed a meta-analysis on dynamic changes of 5-HT neurotransmission during the course of chronic SSRI treatment...
June 27, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28653080/alterations-of-expression-of-inflammation-immune-related-genes-in-the-dorsal-and-ventral-striatum-of-adult-c57bl-6j-mice-following-chronic-oxycodone-self-administration-a-rna-sequencing-study
#3
Yong Zhang, Yupu Liang, Orna Levran, Matthew Randesi, Vadim Yuferov, Connie Zhao, Mary Jeanne Kreek
INTRODUCTION: Non-medical use of prescription opioids such as the mu opioid receptor (MOP-r) agonist oxycodone is a growing problem in the USA and elsewhere. There is limited information about oxycodone's impact on diverse gene systems in the brain. OBJECTIVES: The current study was designed to examine how chronic oxycodone self-administration (SA) affects gene expression in the terminal areas of the nigrostriatal and mesolimbic dopaminergic pathways in mice. METHOD: Adult male C57BL/6J mice underwent a 14-day oxycodone self-administration procedure (4 h/day, 0...
June 26, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28653044/neuroclinical-framework-for-the-role-of-stress-in-addiction
#4
Laura E Kwako, George F Koob
Addiction has been conceptualized as a three-stage cycle-binge/intoxication, withdrawal/negative affect, and preoccupation/anticipation-that worsens over time and involves allostatic changes in hedonic function via changes in the brain reward and stress systems. Using the withdrawal/negative affect stage and negative reinforcement as an important source of motivation for compulsive drug seeking, we outline the neurobiology of the stress component of the withdrawal/negative affect stage and relate it to a derivative of the Research Domain Criteria research construct for the study of psychiatric disease, known as the Addictions Neuroclinical Assessment...
February 2017: Chronic stress
https://www.readbyqxmd.com/read/28652501/serum-levels-of-neuroactive-steroids-in-first-episode-antipsychotic-na%C3%A3-ve-schizophrenic-patients-and-its-correlation-with-aggression-a-case-control-study
#5
R K Solanki, P Sharma, A Tyagi, C Singh
BACKGROUND: The evidence of hypothalamic-pituitary-adrenal axis dysfunction in schizophrenia has been reviewed in the context of the stress-diathesis model. Overactivation of this axis leads to altered blood levels of cortisol and dehydroepiandrosterone sulfate (DHEA-S). These neurosteroids in turn act on the hippocampus and interact with gamma-aminobutyric acid and N-methyl-D-aspartate receptors leading to neurotoxicity and may be involved in the neurobiology of aggression. This study aimed to explore the blood level of these neurosteroids and ascertain its correlation with state aggression and psychopathology in first-episode antipsychotic-naïve schizophrenic patients...
June 2017: East Asian Archives of Psychiatry: Official Journal of the Hong Kong College of Psychiatrists
https://www.readbyqxmd.com/read/28651478/interval-timing-is-preserved-despite-circadian-desynchrony-in-rats-constant-light-and-heavy-water-studies
#6
Christian C Petersen, Ralph E Mistlberger
The mechanisms that enable mammals to time events that recur at 24-h intervals (circadian timing) and at arbitrary intervals in the seconds-to-minutes range (interval timing) are thought to be distinct at the computational and neurobiological levels. Recent evidence that disruption of circadian rhythmicity by constant light (LL) abolishes interval timing in mice challenges this assumption and suggests a critical role for circadian clocks in short interval timing. We sought to confirm and extend this finding by examining interval timing in rats in which circadian rhythmicity was disrupted by long-term exposure to LL or by chronic intake of 25% D2O...
June 1, 2017: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/28651369/reduced-thalamus-volume-may-reflect-nicotine-severity-in-young-male-smokers
#7
Dahua Yu, Kai Yuan, Jiadong Cheng, Yanyan Guan, Yangding Li, Yanzhi Bi, Jinquan Zhai, Lin Luo, Bo Liu, Ting Xue, Xiaoqi Lu
Introduction: Nicotine acts as an agonist at presynaptic nicotinic acetylcholine receptors (nAChRs) and to facilitate synaptic release of several neurotransmitters including dopamine and glutamate. The thalamus has the highest density of nAChRs in the brain, which may make this area be more vulnerable to the addictive effects of nicotine. However, the volume of thalamus abnormalities and the association with smoking behaviors in young smokers remains unknown. Methods: Thirty-six young male smokers and 36 age-, gender- and education-matched nonsmokers participated in current study...
June 23, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28651098/an-interoceptive-model-of-bulimia-nervosa-a-neurobiological-systematic-review
#8
REVIEW
Megan Klabunde, Danielle Collado, Cara Bohon
The objective of our study was to examine the neurobiological support for an interoceptive sensory processing model of bulimia nervosa (BN). To do so, we conducted a systematic review of interoceptive sensory processing in BN, using the PRISMA guidelines. We searched PsychInfo, Pubmed, and Web of Knowledge databases to identify biological and behavioral studies that examine interoceptive detection in BN. After screening 390 articles for inclusion and conducting a quality assessment of articles that met inclusion criteria, we reviewed 41 articles...
June 19, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28650950/neurobiologic-correlates-of-attention-and-memory-deficits-following-critical-illness-in-early-life
#9
Raisa M Schiller, Hanneke IJsselstijn, Marlous J Madderom, André B Rietman, Marion Smits, Arno F J van Heijst, Dick Tibboel, Tonya White, Ryan L Muetzel
OBJECTIVES: Survivors of critical illness in early life are at risk of long-term-memory and attention impairments. However, their neurobiologic substrates remain largely unknown. DESIGN: A prospective follow-up study. SETTING: Erasmus MC-Sophia Children's Hospital, Rotterdam, the Netherlands. PATIENTS: Thirty-eight school-age (8-12 yr) survivors of neonatal extracorporeal membrane oxygenation and/or congenital diaphragmatic hernia with an intelligence quotient greater than or equal to 80 and a below average score (z score ≤ -1...
June 23, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28649903/herbal-medicine-for-psychiatric-disorders-psychopharmacology-and-neuroscience-based-nomenclature
#10
Siu W Tang, Wayne Tang, Brian E Leonard
OBJECTIVES: Herbs are frequently and concurrently used with prescribed drugs by patients worldwide. While clinical trials have found some herbs to be as useful as standard psychiatric drugs, most clinicians are unaware of their pharmacological mechanisms. METHODS: We searched English language and other language literature with English abstracts listed in PubMed website, supplemented by additional through Google Scholar's free academic paper abstract website for publications on herbs, focusing on their clinical usages in mental disorders, their neurobiology and pharmacology...
June 26, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/28649672/oxytocin-and-stress-related-disorders-neurobiological-mechanisms-and-treatment-opportunities
#11
Lauren M Sippel, Casey E Allington, Robert H Pietrzak, Ilan Harpaz-Rotem, Linda C Mayes, Miranda Olff
Novel pharmacotherapies that improve outcomes for individuals with stress-related psychiatric disorders are needed. The neurohormone oxytocin (OT) is a promising candidate given its influence on the social-emotional brain. In this review, we present an overview of evidence supporting OT's utility for treating major depressive disorder and posttraumatic stress disorder. We first discuss endogenous OT, which research suggests is not yet a reliable biomarker of stress-related disorders. Second, we review effects of intranasal (IN) OT on processes relevant to stress-related disorders in healthy populations (anhedonia, reward processing, psychosocial stress reactivity, fear/anxiety, and social behavior) and their neurobiological mechanisms (e...
February 2017: Chronic stress
https://www.readbyqxmd.com/read/28649671/early-life-stress-mood-and-anxiety-disorders
#12
Shariful A Syed, Charles B Nemeroff
Early life stress has been shown to exert profound short- and long-term effects on human physiology both in the central nervous system and peripherally. Early life stress has demonstrated clear association with many psychiatric disorders including major depression, posttraumatic stress disorder, and bipolar disorder. The Diagnostic and Statistics Manuel of Mental Disorders (DSM) diagnostic categorical system has served as a necessary framework for clinical service, delivery, and research, however has not been completely matching the neurobiological research perspective...
February 2017: Chronic stress
https://www.readbyqxmd.com/read/28649312/the-eu-aims-longitudinal-european-autism-project-leap-design-and-methodologies-to-identify-and-validate-stratification-biomarkers-for-autism-spectrum-disorders
#13
Eva Loth, Tony Charman, Luke Mason, Julian Tillmann, Emily J H Jones, Caroline Wooldridge, Jumana Ahmad, Bonnie Auyeung, Claudia Brogna, Sara Ambrosino, Tobias Banaschewski, Simon Baron-Cohen, Sarah Baumeister, Christian Beckmann, Michael Brammer, Daniel Brandeis, Sven Bölte, Thomas Bourgeron, Carsten Bours, Yvette de Bruijn, Bhismadev Chakrabarti, Daisy Crawley, Ineke Cornelissen, Flavio Dell' Acqua, Guillaume Dumas, Sarah Durston, Christine Ecker, Jessica Faulkner, Vincent Frouin, Pilar Garces, David Goyard, Hannah Hayward, Lindsay M Ham, Joerg Hipp, Rosemary J Holt, Mark H Johnson, Johan Isaksson, Prantik Kundu, Meng-Chuan Lai, Xavier Liogier D'ardhuy, Michael V Lombardo, David J Lythgoe, René Mandl, Andreas Meyer-Lindenberg, Carolin Moessnang, Nico Mueller, Laurence O'Dwyer, Marianne Oldehinkel, Bob Oranje, Gahan Pandina, Antonio M Persico, Amber N V Ruigrok, Barbara Ruggeri, Jessica Sabet, Roberto Sacco, Antonia San José Cáceres, Emily Simonoff, Roberto Toro, Heike Tost, Jack Waldman, Steve C R Williams, Marcel P Zwiers, Will Spooren, Declan G M Murphy, Jan K Buitelaar
BACKGROUND: The tremendous clinical and aetiological diversity among individuals with autism spectrum disorder (ASD) has been a major obstacle to the development of new treatments, as many may only be effective in particular subgroups. Precision medicine approaches aim to overcome this challenge by combining pathophysiologically based treatments with stratification biomarkers that predict which treatment may be most beneficial for particular individuals. However, so far, we have no single validated stratification biomarker for ASD...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28649302/differential-predictors-of-dsm-5-ptsd-and-icd-11-complex-ptsd-among-african-american-women
#14
Abigail Powers, Negar Fani, Sierra Carter, Dorthie Cross, Marylene Cloitre, Bekh Bradley
Background: Complex posttraumatic stress disorder (CPTSD) is proposed for inclusion in the ICD-11 as a diagnosis distinct from posttraumatic stress disorder (PTSD), reflecting deficits in affective, self-concept, and relational domains. There remains significant controversy over whether CPTSD provides useful diagnostic information beyond PTSD and other comorbid conditions, such as depression or substance use disorders. Objective: The present study examined differences in psychiatric presentation for three groups: traumatized controls, DSM-5 PTSD subjects, and ICD-11 CPTSD subjects...
2017: European Journal of Psychotraumatology
https://www.readbyqxmd.com/read/28649299/the-neurobiology-of-ptsd
#15
EDITORIAL
Ruth Lanius, Miranda Olff
No abstract text is available yet for this article.
2017: European Journal of Psychotraumatology
https://www.readbyqxmd.com/read/28649208/the-four-causes-of-adhd-aristotle-in-the-classroom
#16
Marino Pérez-Álvarez
Attention-Deficit/Hyperactivity Disorder (ADHD) is one of the most well-established and at the same time controversial disorders to the extreme of being placed in doubt. In the first of two parts, the established position is critically reviewed, beginning with showing fallacious reasoning on which the diagnosis is based, lacking clinical proof. Similarly, a certain rhetoric and metaphysics in genetic and neurobiological research is highlighted, where, for example, a meager accumulation of data is offered as robust conclusions, and correlates and correlations as causes and bases...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28648819/%C3%AE-9-tetrahydrocannabinol-%C3%AE-9-thc-administration-after-neonatal-exposure-to-phencyclidine-potentiates-schizophrenia-related-behavioral-phenotypes-in-mice
#17
Guadalupe Rodríguez, Nichole M Neugebauer, Katherine Lan Yao, Herbert Y Meltzer, John G Csernansky, Hongxin Dong
The clinical onset of schizophrenia often coincides with cannabis use in adolescents and young adults. However, the neurobiological consequences of this co-morbidity are not well understood. In this study, we examined the effects of Δ9-THC exposure during early adulthood on schizophrenia-related behaviors using a developmental mouse model of schizophrenia. Phencyclidine (PCP) or saline was administered once in neonatal mice (at P7; 10mg/kg). In turn, Δ9-THC or saline was administered sub-acutely later in life to cohorts of animals who had received either PCP or saline (P55-80, 5mg/kg)...
June 22, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28647492/eszopiclone-for-persistent-negative-symptoms-in-schizophrenia-an-unintended-n-of-1-study
#18
Urvakhsh Meherwan Mehta, Vinutha Ravishankar, Jagadisha Thirthalli
Persistent negative and cognitive symptoms in patients with schizophrenia pose a significant challenge to clinicians. Being a heterogeneous cluster of symptoms with potentially distinct underlying pathogenesis, it is important to examine novel therapies based on emerging neurobiological evidence. Eszopiclone is known to enhance the deficient sleep spindles that are related to impairments in learning and memory in schizophrenia. In this report we highlight the potential utility of eszopiclone in treating persistent negative symptoms in a patient with chronic schizophrenia...
June 21, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28645536/imaging-genetics-of-schizophrenia-in-the-post-gwas-era
#19
REVIEW
Ayla Arslan
Imaging genetics is a research methodology studying the effect of genetic variation on brain structure, function, behavior, and risk for psychopathology. Since the early 2000s, imaging genetics has been increasingly used in the research of schizophrenia (SZ). SZ is a severe mental disorder with no precise knowledge of its underlying neurobiology, however, new genetic and neurobiological data generate a climate for new avenues. The accumulating data of genome wide association studies (GWAS) continuously decode SZ risk genes...
June 20, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28645199/do-neurobiological-understandings-of-smoking-influence-quitting-self-efficacy-or-treatment-intentions
#20
Kylie Morphett, Adrian Carter, Wayne Hall, Jayne Lucke, Brad Partridge, Coral Gartner
Introduction: Addiction is increasingly defined as a "brain disease" caused by changes to neurochemistry. While nicotine addiction has historically been excluded in the brain disease model of addiction (BDMA), it is beginning to be labelled a chronic brain disease. We investigated whether Australian smokers endorse brain-based explanations of smoking, and whether these beliefs are associated with quitting self-efficacy or treatment intentions. Method: Cross-sectional study of Australian smokers (N=1,538) who completed a survey measuring their agreement with statements on the brain's role in smoking...
June 22, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
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