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https://www.readbyqxmd.com/read/28453905/transdiagnostic-neural-correlates-of-affective-face-processing-in-anxiety-and-depression
#1
Annmarie MacNamara, Heide Klumpp, Amy E Kennedy, Scott A Langenecker, K Luan Phan
BACKGROUND: It is unknown whether there are neurobiologic differences between various anxiety and depressive disorders, or whether they are characterized by shared neurobiologic variation that cuts across diagnostic boundaries. For instance, multiple anxiety disorders and depression may be characterized by abnormalities in blood oxygen-level dependent (BOLD) response during the processing of affective scenes and faces. To interrogate the shared or unique nature of these aberrations, research that examines the influence of transdiagnostic, dimensional predictors across multiple diagnoses is needed...
April 28, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28449557/wnt-and-gsk3-signaling-pathways-in-bipolar-disorder-clinical-and-therapeutic-implications
#2
REVIEW
Ather Muneer
The neurobiology of bipolar disorder, a chronic and systemic ailment is not completely understood. The bipolar phenotype manifests in myriad ways, and psychopharmacological agents like lithium have long term beneficial effects. The enzyme glycogen synthase kinase 3 (GSK3) has come into focus, as lithium and several other mood stabilizing medications inhibit its activity. This kinase and its key upstream modulator, Wnt are dysregulated in mood disorders and there is a growing impetus to delineate the chief substrates involved in the development of these illnesses...
May 31, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28449374/genetic-variability-in-adenosine-deaminase-like-contributes-to-variation-in-alcohol-preference-in-mice
#3
Heidi M B Lesscher, Alexis Bailey, Louk J M J Vanderschuren
BACKGROUND: A substantial part of the risk for alcohol use disorder (AUD) is determined by genetic factors. We previously used chromosome substitution (CSS) mice, to identify a QTL for alcohol preference on mouse chromosome 2. The aim of this study was to identify candidate genes within this QTL that confer the risk for alcohol preference. METHODS: In order to delineate the neurobiological underpinnings of alcohol consumption, we expanded on the QTL approach to identify candidate genes for high alcohol preference in mice...
April 27, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28448017/low-density-primary-hippocampal-neuron-culture
#4
Reiko T Roppongi, Kevin P Champagne-Jorgensen, Tabrez J Siddiqui
The ability to probe the structure and physiology of individual nerve cells in culture is crucial to the study of neurobiology, and allows for flexibility in genetic and chemical manipulation of individual cells or defined networks. Such ease of manipulation is simpler in the reduced culture system when compared to the intact brain tissue. While many methods for the isolation and growth of these primary neurons exist, each has its own limitations. This protocol describes a method for culturing low-density and high-purity rodent embryonic hippocampal neurons on glass coverslips, which are then suspended over a monolayer of glial cells...
April 18, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28446254/functional-neuroimaging-of-sex-differences-in-autobiographical-memory-recall-in-depression
#5
K D Young, J Bodurka, W C Drevets
BACKGROUND: Females are more likely than males to develop major depressive disorder (MDD). The current study used fMRI to compare the neural correlates of autobiographical memory (AM) recall between males and females diagnosed with MDD. AM overgenerality is a persistent cognitive deficit in MDD, the magnitude of which is correlated with depressive severity only in females. Delineating the neurobiological correlates of this deficit may elucidate the nature of sex-differences in the diathesis for developing MDD...
April 27, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28445800/adjunctive-celecoxib-for-schizophrenia-a-meta-analysis-of-randomized-double-blind-placebo-controlled-trials
#6
Wei Zheng, Dong-Bin Cai, Xin-Hu Yang, Gabor S Ungvari, Chee H Ng, Norbert Müller, Yu-Ping Ning, Yu-Tao Xiang
Neuroinflammation has been implicated in the neurobiological pathways of schizophrenia. This meta-analysis evaluated the efficacy and tolerability of adjunctive celecoxib as a noncompetitive anti-inflammation drug in treating schizophrenia. Data were searched, extracted, checked and entered into the RevMan (version 5.3) software by two independent investigators. Standardized/weighted mean differences (SMDs/WMDs), risk ratio (RR) and their 95% confidence intervals (CIs) were calculated, as appropriate. Included were 8 randomized controlled trials (RCTs) with a total of 626 patients with schizophrenia including 316 (50...
April 14, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28444848/biologically-meaningful-scents-a-framework-for-understanding-predator-prey-research-across-disciplines
#7
Michael H Parsons, Raimund Apfelbach, Peter B Banks, Elissa Z Cameron, Chris R Dickman, Anke S K Frank, Menna E Jones, Ian S McGregor, Stuart McLean, Dietland Müller-Schwarze, Elisa E Sparrow, Daniel T Blumstein
Fear of predation is a universal motivator. Because predators hunt using stealth and surprise, there is a widespread ability among prey to assess risk from chemical information - scents - in their environment. Consequently, scents often act as particularly strong modulators of memory and emotions. Recent advances in ecological research and analytical technology are leading to novel ways to use this chemical information to create effective attractants, repellents and anti-anxiolytic compounds for wildlife managers, conservation biologists and health practitioners...
April 26, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28444578/experimental-psychosis-research-and-schizophrenia-similarities-and-dissimilarities-in-psychopathology
#8
Leo Hermle, Rainer Kraehenmann
The aim of experimental psychopathology is to delineate overlapping functional disorders of psychoneurobiologically-defined systems where a set of common symptoms may correspond to a variety of nosological entities. According to the vulnerability model of psychosis, experimental research needs to go beyond categories such as "schizophrenia". Prospective studies of the effects of psychoactive substances in normal control subjects offer several methodological advantages over routine clinical reviews of schizophrenic patients, especially in terms of standardization...
April 26, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28444316/oxytocin-facilitates-reciprocity-in-social-communication
#9
Franny B Spengler, Dirk Scheele, Nina Marsh, Charlotte Kofferath, Aileen Flach, Sarah Schwarz, Birgit Stoffel-Wagner, Wolfgang Maier, René Hurlemann
Synchrony in social groups may confer significant evolutionary advantages by improving group cohesion and social interaction. However, the neurobiological mechanisms translating social synchrony into refined social information transmission between interacting individuals are still elusive. In two successively conducted experiments involving a total of 199 healthy volunteers, we explored the involvement of the neuropeptide oxytocin (OXT) in reciprocal social interaction. First, we show that synchronous social interactions evoke heightened endogenous OXT release in dyadic partners...
April 21, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/28443503/kratom-and-future-treatment-for-the-opiods-addiction-and-chroic-pain-periculo-beneficium
#10
Ismaliza Ismail, Suzaily Wahab, Hatta Sidi, Srijit Das, Loo Jiann Lin, Rosdinom Razali
Kratom (Mitragynaspeciosa), a natural existing plant found in South-East Asia, is tradi-tionally used as an herb to help to elevate a person's energy and also to treat numerous medical ailments. Other than the analgesic property, kratom has been used as an agent to overcome opioid withdrawal as it contains natural alkaloids, i.e. mitragynine, 7-hydroxymitragynine, and MGM-9, which has agonist affinity on the opioid receptors, including mu (μ) and kappa (κ). The role of neural reward pathway linked to μ-opioid receptors and both dopaminergic and GABA-ergic interneurons that express μ-opioid receptors were deliberated...
April 25, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28442405/the-effect-of-active-video-games-on-cognitive-functioning-in-clinical-and-non-clinical-populations-a-meta-analysis-of-randomized-controlled-trials
#11
REVIEW
Emma Stanmore, Brendon Stubbs, Davy Vancampfort, Eling D de Bruin, Joseph Firth
Physically-active video games ('exergames') have recently gained popularity for leisure and entertainment purposes. Using exergames to combine physical activity and cognitively-demanding tasks may offer a novel strategy to improve cognitive functioning. Therefore, this systematic review and meta-analysis was performed to establish effects of exergames on overall cognition and specific cognitive domains in clinical and non-clinical populations. We identified 17 eligible RCTs with cognitive outcome data for 926 participants...
April 22, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28442370/modulation-of-drug-choice-by-extended-drug-access-and-withdrawal-in-rhesus-monkeys-implications-for-negative-reinforcement-as-a-driver-of-addiction-and-target-for-medications-development
#12
REVIEW
S Stevens Negus, Matthew L Banks
Chronic drug exposure is hypothesized to recruit negative reinforcement processes that increase the magnitude and alter the mechanisms of drug reinforcement. Candidate substrates of negative reinforcement include increased signaling via stress-related neurotransmitters such as corticotropin releasing factor (CRF, acting at CRF receptors) or dynorphin (acting at kappa opioid receptors) and/or decreased signaling via reward-related neurotransmitters such as dopamine. Determinants of drug reinforcement can be examined with choice procedures, in which subjects choose between a drug of interest (e...
April 22, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28441895/ketamine-s-dose-related-effects-on-anxiety-symptoms-in-patients-with-treatment-refractory-anxiety-disorders
#13
Paul Glue, Natalie J Medlicott, Sarah Harland, Shona Neehoff, Bridie Anderson-Fahey, Martin Le Nedelec, Andrew Gray, Neil McNaughton
The N-methyl-D-aspartate receptor antagonist ketamine has rapid onset activity in treatment-resistant depression, post-traumatic stress disorder and obsessive compulsive disorder. Due to similarities in brain network activity in depression and anxiety disorders, we hypothesized that ketamine might also be active in other refractory anxiety disorders. We evaluated the efficacy and safety of ketamine in 12 patients with refractory generalized anxiety disorder and/or social anxiety disorder who were not currently depressed, using an ascending single dose study design (0...
April 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28441884/targeting-neuronal-dysfunction-in-schizophrenia-with-nicotine-evidence-from-neurophysiology-to-neuroimaging
#14
Jason Smucny, Jason R Tregellas
Patients with schizophrenia self-administer nicotine at rates higher than is self-administered for any other psychiatric illness. Although the reasons are unclear, one hypothesis suggests that nicotine is a form of 'self-medication' in order to restore normal levels of nicotinic signaling and target abnormalities in neuronal function associated with cognitive processes. This brief review discusses evidence from neurophysiological and neuroimaging studies in schizophrenia patients that nicotinic agonists may effectively target dysfunctional neuronal circuits in the illness...
April 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28441117/sexual-dimorphism-of-parental-care-from-genes-to-behavior
#15
Noga Zilkha, Niv Scott, Tali Kimchi
Parental care is found in species across the animal kingdom, from small insects to large mammals, with a conserved purpose of increasing offspring survival. Yet enormous variability exists between different species and between the sexes in the pattern and level of parental investment. Here, we review the literature on the neurobiological mechanisms underlying maternal and paternal care, especially in rodents, and discuss the relationship between sex differences in behavior and sexual dimorphism in the brain...
April 24, 2017: Annual Review of Neuroscience
https://www.readbyqxmd.com/read/28440814/depletion-of-adult-neurogenesis-using-the-chemotherapy-drug-temozolomide-in-mice-induces-behavioural-and-biological-changes-relevant-to-depression
#16
M Egeland, C Guinaudie, A Du Preez, K Musaelyan, P A Zunszain, C Fernandes, C M Pariante, S Thuret
Numerous studies have examined links between postnatal neurogenesis and depression using a range of experimental methods to deplete neurogenesis. The antimitotic drug temozolomide (TMZ) has previously been used successfully as an experimental tool in animals to deplete adult neurogenesis and is used regularly on human patients as a standard chemotherapy for brain cancer. In this study, we wanted to evaluate whether TMZ as a model for chemotherapy treatment could affect parameters related to depression in an animal model...
April 25, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28440493/the-extracellular-signal-regulated-kinase-1-2-pathway-in-neurological-diseases-a-potential-therapeutic-target-review
#17
Jing Sun, Guangxian Nan
Signaling pathways are critical modulators of a variety of physiological and pathological processes, and the abnormal activation of some signaling pathways can contribute to disease progression in various conditions. As a result, signaling pathways have emerged as an important tool through which the occurrence and development of diseases can be studied, which may then lead to the development of novel drugs. Accumulating evidence supports a key role for extracellular signal-regulated kinase 1/2 (ERK1/2) signaling in the embryonic development of the central nervous system (CNS) and in the regulation of adult brain function...
April 21, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28440249/innovations-in-pediatric-cataract-surgery
#18
Sudarshan Kumar Khokhar, Ganesh Pillay, Esha Agarwal, Manish Mahabir
Advances in technology have made surgery in children safer and faster. The management of pediatric cataract has made rapid progress in the past decade with the availability of safer anesthesia, newer technique's, more predictable intraocular lens (IOL) power calculation, a better understanding of neurobiology, genetics, amblyopia management, improved IOL designs for preventing visual axis opacification, and adjuvant postoperative care. Modern vitrectomy machines with minimally invasive instruments, radiofrequency, diathermy, and plasma blades help immensely in complicated cases...
March 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28439771/neurobiological-programming-of-early-life-stress-functional-development-of-amygdala-prefrontal-circuitry-and-vulnerability-for-stress-related-psychopathology
#19
Michelle R VanTieghem, Nim Tottenham
Early adverse experiences are associated with heighted vulnerability for stress-related psychopathology across the lifespan. While extensive work has investigated the effects of early adversity on neurobiology in adulthood, developmental approaches can provide further insight on the neurobiological mechanisms that link early experiences and long-term mental health outcomes. In the current review, we discuss the role of emotion regulation circuitry implicated in stress-related psychopathology from a developmental and transdiagnostic perspective...
April 25, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28439100/ventral-striatal-regulation-of-crem-mediates-impulsive-action-and-drug-addiction-vulnerability
#20
M L Miller, Y Ren, H Szutorisz, N A Warren, C Tessereau, G Egervari, A Mlodnicka, M Kapoor, B Chaarani, C V Morris, G Schumann, H Garavan, A M Goate, M J Bannon, J M Halperin, Y L Hurd
Impulsivity, a multifaceted behavioral hallmark of attention-deficit/hyperactivity disorder (ADHD), strongly influences addiction vulnerability and other psychiatric disorders that incur enormous medical and societal burdens yet the neurobiological underpinnings linking impulsivity to disease remain poorly understood. Here we report the critical role of ventral striatal cAMP-response element modulator (CREM) in mediating impulsivity relevant to drug abuse vulnerability. Using an ADHD rat model, we demonstrate that impulsive animals are neurochemically and behaviorally more sensitive to heroin and exhibit reduced Crem expression in the nucleus accumbens core...
April 25, 2017: Molecular Psychiatry
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