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https://www.readbyqxmd.com/read/29165684/can-biomarkers-advance-hiv-research-and-care-in-the-art-era
#1
Amy C Justice, Kristine M Erlandson, Paolo G Miotti, Alan Landay, Peter W Hunt, Russell P Tracy
Despite achieving HIV-1 RNA suppression below levels of detection and, for most, improved CD4 counts, those aging with HIV experience excess low-level inflammation, hypercoagulability, and immune dysfunction (chronic inflammation) compared to demographically and behaviorally similar uninfected individuals. A host of biomarkers that are linked to chronic inflammation are also associated with HIV-associated non-AIDS events including cardiovascular disease, many forms of cancer, liver disease, renal disease, neurocognitive decline, and osteoporosis...
November 20, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29164599/neurocognition-and-subjective-experience-following-acute-doses-of-the-synthetic-cannabinoid-jwh-018-a-phase-1-placebo-controlled-pilot-study
#2
Eef L Theunissen, Nadia R P W Hutten, Natasha L Mason, Stefan W Toennes, Kim P C Kuypers, Eliza B de Sousa Fernandes Perna, Johannes G Ramaekers
BACKGROUND AND PURPOSE: Synthetic cannabinoids (often sold as Spice or K2) have become a very popular alternative to cannabis due to the easy access and portrayed safety. Controlled studies on the behavioral effects of synthetic cannabinoids are currently lacking, which hampers risk assessments of these compounds. EXPERIMENTAL APPROACH: This is a first attempt to assess the influence of a synthetic cannabinoid, JWH-018, on neurocognition and subjective experience in humans after controlled administration...
November 22, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29164407/neurological-complications-of-hiv-infection
#3
REVIEW
Shelli Farhadian, Payal Patel, Serena Spudich
PURPOSE OF REVIEW: HIV-associated neurocognitive disorders (HAND) are common in patients with HIV disease, even during suppressive combination antiretroviral therapy (cART). This review article addresses the pathogenesis of HAND, focusing on important findings from the last 5 years. RECENT FINDINGS: While HIV-associated dementia is now rare in settings with cART availability, mild forms of HAND are increasing in prevalence. Biomarkers of cellular injury, such as neurofilament light chain and neopterin, can detect early stages of neuroinflammation associated with HIV infection and are increased even in asymptomatic individuals with chronic HIV infection...
November 21, 2017: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/29164163/neurocognitive-deficits-of-concussed-adolescent-athletes-at-self-reported-symptom-resolution-in-the-zurich-guidelines-era
#4
Peter K Kriz, Rebekah Mannix, Alex M Taylor, Danielle Ruggieri, William P Meehan
Background: Previous studies have evaluated high school and collegiate athletes in the pre-Zurich guidelines era; whether adolescent athletes demonstrate similar neurocognitive decrements in the current concussion management era remains unclear. Purpose: To assess for the presence of neurocognitive deficits in adolescents with a sport-related concussion at the time of self-reported symptom resolution. Study Design: Cross-sectional study; Level of evidence, 3...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29163865/associations-between-neurocognitive-functioning-and-social-and-occupational-resilience-among-south-african-women-exposed-to-childhood-trauma
#5
C A Denckla, N S Consedine, G Spies, M Cherner, D C Henderson, K C Koenen, S Seedat
Background: Prior research on adaptation after early trauma among black South African women typically assessed resilience in ways that lacked contextual specificity. In addition, the neurocognitive correlates of social and occupational resilience have not been investigated. Objective: The primary aim of this exploratory study was to identify domains of neurocognitive functioning associated with social and occupational resilience, defined as functioning at a level beyond what would be expected given exposure to childhood trauma...
2017: European Journal of Psychotraumatology
https://www.readbyqxmd.com/read/29163084/sex-matters-robust-sex-differences-in-signal-detection-in-the-hiv-1-transgenic-rat
#6
Kristen A McLaurin, Rosemarie M Booze, Charles F Mactutus, Amanda J Fairchild
Sex differences in human immunodeficiency virus type-1 (HIV-1) have been repeatedly suggested. Females, who account for 51% of HIV-1 seropositive individuals, are inadequately represented in clinical and preclinical studies, as well as in the description of HIV-1 associated neurocognitive disorders (HAND). Direct comparisons of neurocognitive decline in women and men must be made to address this underrepresentation. The effect of biological sex (i.e., the biological factors, including chromosomes and hormones, determining male or female characteristics; WHO, 2017) on sustained attention, which is commonly impaired in HIV-1 seropositive individuals, was investigated in intact HIV-1 transgenic (Tg) and control animals using a signal detection operant task...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29163079/neural-correlates-of-rewarded-response-inhibition-in-youth-at-risk-for-problematic-alcohol-use
#7
Brenden Tervo-Clemmens, Alina Quach, Beatriz Luna, William Foran, Tammy Chung, Michael D De Bellis, Duncan B Clark
Risk for substance use disorder (SUD) is associated with poor response inhibition and heightened reward sensitivity. During adolescence, incentives improve performance on response inhibition tasks and increase recruitment of cortical control areas (Geier et al., 2010) associated with SUD (Chung et al., 2011). However, it is unknown whether incentives moderate the relationship between response inhibition and trait-level psychopathology and personality features of substance use risk. We examined these associations in the current project using a rewarded antisaccade (AS) task (Geier et al...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29162183/dimensions-of-childhood-adversity-have-distinct-associations-with-neural-systems-underlying-executive-functioning
#8
Margaret A Sheridan, Matthew Peverill, Amy S Finn, Katie A McLaughlin
Childhood adversity is associated with increased risk for psychopathology. Neurodevelopmental pathways underlying this risk remain poorly understood. A recent conceptual model posits that childhood adversity can be deconstructed into at least two underlying dimensions, deprivation and threat, that are associated with distinct neurocognitive consequences. This model argues that deprivation (i.e., a lack of cognitive stimulation and learning opportunities) is associated with poor executive function (EF), whereas threat is not...
December 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/29161395/postoperative-cognitive-dysfunction-and-dementia-what-we-need-to-know-and-do
#9
M J Needham, C E Webb, D C Bryden
Approximately 12% of apparently previously cognitively well patients undergoing anaesthesia and noncardiac surgery will develop symptoms of cognitive dysfunction after their procedure. Recent articles in this Journal have highlighted the difficulties of confirming any clear links between anaesthesia and cognitive dysfunction, in part because of the lack of consistency regarding definition and diagnosis. Postoperative cognitive dysfunction (POCD) is usually self-limiting and rarely persists in the longer term, although plausible biological mechanisms for an impact on brain protein deposition do exist...
December 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29161151/an-index-of-decline-or-recovery-following-nonimpact-and-impact-mtbi
#10
James Ernest Sweeney, Andrew M Johnson
This study investigated the degree to which litigants/insurance claimants sustaining Nonimpact mild traumatic brain injury (mTBI) in motor vehicle accidents differed from compensation-seeking motor vehicle accident victims that suffered Impact mTBI in terms of neuropsychological decline/recovery, using as a control litigants/insurance claimants that did not experience mTBI in motor vehicle accidents. A clinical index (C-Voc) was employed as the dependent measure for decline/recovery, consisting of T-score algebraic differences between a highly sensitive neurocognitive measure (Category Test) and a relatively insensitive "hold" measure (Wechsler Adult Intelligence Scale Vocabulary subtest)...
November 21, 2017: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/29160930/brain-responses-to-social-norms-meta-analyses-of-fmri-studies
#11
Oksana Zinchenko, Marie Arsalidou
Social norms have a critical role in everyday decision-making, as frequent interaction with others regulates our behavior. Neuroimaging studies show that social-based and fairness-related decision-making activates an inconsistent set of areas, which sometimes includes the anterior insula, anterior cingulate cortex, and others lateral prefrontal cortices. Social-based decision-making is complex and variability in findings may be driven by socio-cognitive activities related to social norms. To distinguish among social-cognitive activities related to social norms, we identified 36 eligible articles in the functional magnetic resonance imaging (fMRI) literature, which we separate into two categories (a) social norm representation and (b) norm violations...
November 21, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29160817/impact-of-high-dose-multi-strain-probiotic-supplementation-on-neurocognitive-performance-and-central-nervous-system-immune-activation-of-hiv-1-infected-individuals
#12
Giancarlo Ceccarelli, Jason M Brenchley, Eugenio Nelson Cavallari, Giuseppe Corano Scheri, Mariangela Fratino, Claudia Pinacchio, Ivan Schietroma, Saeid Najafi Fard, Carolina Scagnolari, Ivano Mezzaroma, Vincenzo Vullo, Gabriella d'Ettorre
BACKGROUND: Gut microbiota has metabolic activity which influences mucosal homeostasis, local and systemic immune responses, and other anatomical systems (i.e., brain). The effects of dysbiosis are still poorly studied in Human Immunodeficiency Virus-1 (HIV-1) positive subjects and insufficient data are available on the impairment of the gut-brain axis, despite neurocognitive disorders being commonly diagnosed in these patients. This study evaluated the impact of a probiotic supplementation strategy on intrathecal immune activation and cognitive performance in combined antiretroviral therapy (cART) treated HIV-1 infected subjects...
November 21, 2017: Nutrients
https://www.readbyqxmd.com/read/29160603/relationship-between-self-reported-cognitive-difficulties-objective-neuropsychological-test-performance-and-psychological-distress-in-chronic-pain
#13
K S Baker, S J Gibson, N Georgiou-Karistianis, M J Giummarra
BACKGROUND: Persons with chronic pain often report problems with cognitive abilities, such as memory or attention. There is limited understanding of whether objective performance is consistent with subjective reports, and how psychological factors contribute. We aimed to investigate these relationships in a group of patients expressing cognitive concerns, and evaluate the utility of self-report tools for pain management settings. METHOD: Participants with chronic pain (n = 41) completed standardized neuropsychological tests, and self-report measures of cognitive functioning, pain, mood and sleep, as part of a broader study investigating cognitive performance in pain...
November 21, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29160019/comparison-of-animal-action-and-phonemic-fluency-in-aphasia
#14
Yasmeen Faroqi-Shah, Lisa Milman
BACKGROUND: The ability to generate words that follow certain constraints, or verbal fluency, is a sensitive indicator of neurocognitive impairment, and is impacted by a variety of variables. AIMS: To investigate the effect of post-stroke aphasia, elicitation category and linguistic variables on verbal fluency performance. METHODS & PROCEDURES: Twenty-eight persons with aphasia (PWA) with a single left-hemisphere lesion and 40 age-matched neurotypical community-dwelling adults were administered three verbal fluency tasks: two semantic (animals and actions) and one phonemic (the letters F, A and S)...
November 21, 2017: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/29158952/the-impact-of-attentional-focus-on-the-treatment-of-musculoskeletal-and-movement-disorders
#15
Christopher Hunt, Arsenio Paez, Eric Folmar
Treatment plans employed by physical therapists involved in musculoskeletal rehabilitation may follow a conventional medical-model approach, isolating care at the tissue level but neglecting consideration for neurocognitive contributions to recovery. Understanding and integration of motor learning concepts into physical therapy practice is integral for influencing the human movement system in the most effective manner. One such motor learning concept is the use of verbal instruction to influence the attentional focus of the learner...
November 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29158902/hypernatraemic-hypovolaemia-with-anaemia-an-unusual-presentation-of-primary-testicular-insufficiency
#16
Usman Javaid, Vikram Lal, Catherine Napier, Alison Burbridge, Richard Quinton
Hypogonadal men may experience intense vasomotor symptoms, and vasomotor sweating can occasionally be associated with profound fluid losses. We describe a 37-year-old male, who exhibited persistent hypovolaemic hypernatraemia that was challenging to treat despite a continuous high fluid input (>4-5 L/day). He was noted to have drenching sweats and normochromic anaemia. He had recent traumatic head injury, which resulted in neurocognitive dysfunction, so pituitary function tests were done which showed primary hypogonadism...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29158267/methamphetamine-increases-hiv-infectivity-in-neural-progenitor-cells
#17
Marta Skowronska, Marisa McDonald, Martina Velichkovska, Ana Rachel Leda, Minseon Park, Michal Toborek
HIV-1 infection and methamphetamine (METH) abuse frequently occur simultaneously and may have synergistic pathological effects. Although HIV-positive/active METH users have been shown to have higher HIV viral loads and experience more severe neurological complications than non-users, the direct impact of METH on HIV infection and its link to the development of neurocognitive alternations are still poorly understood. In the present study, we hypothesized that METH impacts HIV infection of neural progenitor cells (NPC) by a mechanism encompassing NFκB/SP1-mediated HIV-LTR activation...
November 20, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29158147/joint-analysis-of-cognitive-and-circadian-variation-in-schizophrenia-and-bipolar-i-disorder
#18
Pramod Thomas, Fanyin He, Sati Mazumdar, Joel Wood, Triptish Bhatia, Ruben C Gur, Raquel E Gur, Daniel Buysse, Vishwajit L Nimgaonkar, Smita N Deshpande
BACKGROUND: Impairment in cognitive variables and alterations in circadian function have been documented among patients with schizophrenia (SZ) and bipolar I disorder (BP1), but it is not known whether joint analysis of these variables can define clinically relevant sub-groups in either disorder. OBJECTIVES: To evaluate the pattern and relationship of cognitive and circadian function in SZ and BP1 patients with respect to diagnosis and indices of clinical severity...
November 7, 2017: Asian Journal of Psychiatry
https://www.readbyqxmd.com/read/29157996/longitudinal-interactions-between-brain-and-cognitive-measures-on-reading-development-from-6-months-to-14-years
#19
Kaisa Lohvansuu, Jarmo A Hämäläinen, Leena Ervast, Heikki Lyytinen, Paavo H T Leppänen
Dyslexia is a neurobiological disorder impairing learning to read. Brain responses of infants at genetic risk for dyslexia are abnormal already at birth, and associations from infant speech perception to preschool cognitive skills and reading in early school years have been documented, but there are no studies showing predicting power until adolescence. Here we show that in at-risk infants, brain activation to pseudowords at left hemisphere predicts 44% of reading speed at 14 years, and even improves the prediction after taking into account neurocognitive preschool measures of letter naming, phonology, and verbal short-term memory...
November 17, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29157336/dissociated-components-of-executive-control-in-acute-hypobaric-hypoxia
#20
Endre Takács, István Czigler, Lívia Gabriella Pató, László Balázs
INTRODUCTION: The neurocognitive effects of acute hypobaric hypoxia are still largely unknown. This study was designed to test the hypothesis that executive control, an important component of cognition, is especially vulnerable to hypoxia. METHODS: Subjects participated in a simulated hypobaric chamber flight to 5500 m. Four auditory tasks were presented before, during, and after hypoxia: 1) Voice, and 2) Name variant of the Stroop task (both measuring conflict resolution); 3) go/no-go task (GNG; measuring inhibition); and 4) two-choice reaction time task (CRT; which is a noninhibitory control task)...
December 1, 2017: Aerospace Medicine and Human Performance
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