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Dysfunction cognitive

Chao Xiong, Zhiquan Zhang, Gurpreet S Baht, Niccolo Terrando
Surgery is commonly used to improve and maintain quality of life. Unfortunately, in vulnerable patients such as the elderly, complications may occur and significantly diminish the outcome. Indeed, after routine orthopedic surgery to repair a fracture, as many as 50% of elderly patients suffer from neurologic complications like delirium. Also, the capacity to heal and regenerate tissue after surgery decreases with age, and can impact the quality of fracture repair and even osseous integration of implants. Thus, a better understanding of mechanisms that drive these age-dependent changes could provide strategic targets to minimize risk for such complications and optimize outcomes...
February 27, 2018: Journal of Visualized Experiments: JoVE
Safwat Y Diab, Sanna Isosävi, Samir R Qouta, Saija Kuittinen, Raija-Leena Punamäki
BACKGROUND: Women at pre partum and post partum are especially susceptible to war trauma because they struggle to protect their infants from danger. Trauma research suggests increased problems in maternal mental health and infant development. Yet many cognitive-emotional processes affect the trauma survivors' mental health, such as post-traumatic growth and post-traumatic cognition. The aim of this study was to examine whether a mother's high post-traumatic growth and optimal post-traumatic cognition could protect their own mental health and their infant's stress regulation from the effects of traumatic war experiences...
February 21, 2018: Lancet
Steffen Moritz, Karla Spirandelli, Insa Happach, Despina Lion, Fabrice Berna
OBJECTIVES: There is mixed evidence regarding whether patients with obsessive-compulsive disorder (OCD) display substantial neurocognitive deficits. Several studies implicate poor motivation, comorbid disorders, or distraction due to obsessive thoughts as potential causes of secondary malperformance. The present study examined the impact of stereotype threat (i.e., confrontation with a negative stereotype may impair performance) on neuropsychological functioning in individuals with OCD...
March 19, 2018: Journal of the International Neuropsychological Society: JINS
Temitayo Oyefunmike Oyegbile, Bronson Elizabeth Delasobera, Nassim Zecavati
The objective was to characterize cognitive deficits and postconcussive symptoms in a pediatric population with no concussion, a single concussion, and ≥2 concussions, using a cross-sectional design. Cognitive function and postconcussive symptoms were assessed in participants (age 10-20) with no concussion (n = 1118), single concussion (n = 368), and repeated (≥2) concussions (n = 252). Analyses were adjusted for age and gender. Individuals with ≥2 concussions exhibited more total postconcussive symptoms; more loss of consciousness, amnesia and confusion; more headaches; and poorer cognitive function compared to no concussion and single concussion...
January 1, 2018: Journal of Child Neurology
Bernadette A Fausto, Adrian N S Badana, Olivia M Valdes, Ponrathi Athilingam, Jerri D Edwards
Cognitive dysfunction is a predictor of driving cessation in older adults and a common sequela of heart failure (HF). Although HF has been associated with an increased risk of driving cessation, the independent relationship between HF and driving cessation after cognitive function is considered remains to be established. The objective of these analyses is to examine HF as an independent predictor of driving cessation across three years among a cohort of older drivers in the United States. Analyses included 850 older adults who completed sensory, cognitive, and physical measures at baseline and mobility and health measures at a three-year follow-up...
December 2017: Journal of Transport & Health
Hui-Ying Xu, Guang-Hua Fu, Gui-Sheng Wu
Objective: To investigate the effect of dexmedetomidine at maintenance dose on the postoperative function of elder patients after general anesthesia for laparoscopic ovarian cystectomy. Methods: We enrolled a total of 96 elder patients who were admitted to this hospital for laparoscopic ovarian cystectomy under general anesthesia between March 2015 and March 2017, and divided them into two groups, Group A (n = 48) and B (n = 48). Patients in both groups received the same methods for anesthesia induction and maintenance drugs...
December 2017: Saudi Journal of Biological Sciences
Katharina Förster, Silke Jörgens, Tracy M Air, Christian Bürger, Verena Enneking, Ronny Redlich, Dario Zaremba, Dominik Grotegerd, Katharina Dohm, Susanne Meinert, Elisabeth J Leehr, Joscha Böhnlein, Jonathan Repple, Nils Opel, Erhan Kavakbasi, Volker Arolt, Pienie Zwitserlood, Udo Dannlowski, Bernhard T Baune
To understand how cognitive dysfunction contributes to social cognitive deficits in depression, we investigated the relationship between executive function and social cognitive performance in adolescents and young adults during current and remitted depression, compared to healthy controls. Social cognition and executive function were measured in 179 students (61 healthy controls and 118 patients with depression; Mage = 20.60 years; SDage = 3.82 years). Hierarchical regression models were employed within each group (healthy controls, remitted depression, current depression) to examine the nature of associations between cognitive measures...
February 22, 2018: Psychiatry Research
Russell Ouellette, Åsa Bergendal, Sara Shams, Juha Martola, Caterina Mainero, Maria Kristoffersen Wiberg, Sten Fredrikson, Tobias Granberg
OBJECTIVE: To investigate the long-term progression of cognitive dysfunction and its neuroanatomical correlates and predictors in multiple sclerosis (MS). METHODS: A cohort of 37 MS patients reflecting five decades of disease duration and all subtypes was followed over 17.5 years. Matched controls were recruited at the last follow-up. Global cognitive functioning was assessed using a principal component cognitive index based on comprehensive neuropsychological testing...
March 6, 2018: Multiple Sclerosis and related Disorders
Shayan Amiri, Aliakbar Yousefi-Ahmadipour, Mir-Jamal Hosseini, Arya Haj-Mirzaian, Majid Momeny, Heshmat Hosseini-Chegeni, Tahmineh Mokhtari, Sharmin Kharrazi, Gholamreza Hassanzadeh, Seyed Mohammad Amini, Somayeh Jafarinejad, Mahmoud Ghazi-Khansari
Silver nanoparticles (Ag-NPs) are currently used in a wide range of consumer products. Considering the small size of Ag-NPs, they are able to pass through variety of biological barriers and exert their effects. In this regard, the unique physicochemical properties of Ag-NPs along with its high application in the industry have raised concerns about their negative effects on human health. Therefore, it investigated whether prenatal exposure to low doses of Ag-NPs is able to induce any abnormality in the cognitive and behavioral performance of adult offspring...
March 14, 2018: Neurotoxicology
David Barbic, Brian Kim, Qadeem Salehmohamed, Kate Kemplin, Christopher R Carpenter, Skye Pamela Barbic
OBJECTIVES: Cognitive dysfunction (CD) is a common finding in geriatric patients presenting to the emergency department (ED). Our primary objective was to determine the diagnostic accuracy of the Ottawa 3DY (O3DY) and Short Blessed Test (SBT) as screening tools for the detection of CD in the ED. Our secondary objective was to estimate the inter-rater reliability of these instruments. METHODS: We conducted a prospective cross-sectional comparative study at an inner-city academic medical centre (annual ED visit census 86 000)...
March 16, 2018: BMJ Open
Jeffrey A Leibowitz, Brandi K Ormerod
A large proportion of Gulf War Veterans suffer from Gulf War Illness (GWI) - a devastating chronic disorder characterized by heterogeneous fatigue, pain and neuropsychological symptoms. In their recent Brain, Behavior and Immunity publication entitled "Curcumin Treatment Leads to Better Cognitive and Mood Function in a Model of Gulf War Illness with Enhanced Neurogenesis, and Alleviation of Inflammation and Mitochondrial Dysfunction in the Hippocampus", Kodali and colleagues (2018) report that the polyphenol curcumin improves cognition and mood in a rat model of GWI, potentially by increasing the expression of antioxidant genes and by reversing the effects of chronic combined acetylcholinesterase inhibitor exposure on neuroinflammation, mitochondrial respiration and hippocampal neurogenesis...
March 13, 2018: Brain, Behavior, and Immunity
Rami Darwazeh, Miao Wei, Jianjun Zhong, Zhaosi Zhang, Fajin Lv, Mazhar Darwazeh, Yi Guo, Yi Yan, Samer S Hoz, Xiaochuan Sun
OBJECTIVE: Little is known about the pathophysiological mechanisms of white matter injury after aneurysmal subarachnoid hemorrhage (aSAH). The purpose of this study is to investigate whether mammillothalamic tract (MTT) or corticospinal tract (CST) is more affected by aSAH in the same patients with good-outcome (Grade 5 on Glasgow Outcome Scale (GOS) at 3 months) using diffusion tensor imaging (DTI). METHODS: Between June 2013 to September 2016, 21 good-outcome patients with aSAH and 21 sex-and age-matched normal healthy control participants were recruited...
March 13, 2018: World Neurosurgery
J M G van Bergen, X Li, F C Quevenco, A F Gietl, V Treyer, R Meyer, A Buck, P A Kaufmann, R M Nitsch, P C M van Zijl, C Hock, P G Unschuld
The accumulation of β-amyloid plaques is a hallmark of Alzheimer's disease (AD), and recently published data suggest that increased brain iron burden may reflect pathologies that synergistically contribute to the development of cognitive dysfunction. While preclinical disease stages are considered most promising for therapeutic intervention, the link between emerging AD-pathology and earliest clinical symptoms remains largely unclear. In the current study we therefore investigated local correlations between iron and β-amyloid plaques, and their possible association with cognitive performance in healthy older adults...
March 13, 2018: NeuroImage
Kristin L Szuhany, Danny MacKenzie, Michael W Otto
BACKGROUND AND OBJECTIVES: The impaired ability to delay rewards, delay discounting (DD), is associated with several problematic conditions in which impulsive decision-making derails long-term goals. Working memory (WM), the ability to actively store and manipulate information, is associated with DD. The purpose of this study was to examine the effect of cognitive priming on DD and to identify moderation of this effect dependent on degree of WM capacity (WMC) and depressed mood. METHODS: A WM task (n-back) was used as a cognitive prime before assessment of DD (Monetary Choice Questionnaire) and was compared to a similar prime from an inhibition task in a factorial design in 183 community participants...
March 7, 2018: Journal of Behavior Therapy and Experimental Psychiatry
Richard S E Keefe, George Nomikos, Wei Zhong, Michael Cronquist Christensen, William Jacobson
Background: We evaluated vortioxetine's effects on functional capacity in demographic and clinical subgroups of patients with major depressive disorder. Methods: This was an exploratory analysis of the CONNECT study (NCT01564862) that evaluated changes in functional capacity using University of California San Diego Performance-based Skills Assessment (UPSA) data, categorized by sex, age, education, employment status, and baseline disease severity (Montgomery-Åsberg Depression Rating Scale [MADRS], Clinical Global Impressions-Severity of Illness [CGI-S])...
March 12, 2018: International Journal of Neuropsychopharmacology
Yehuda Ben-Shahar
Manganese (Mn) is an essential trace element that acts as a metal co-factor in diverse biochemical and cellular functions. However, chronic environmental exposure to high levels of Mn is a well-established risk factor for the etiology of severe, atypical parkinsonian syndrome (manganism) via its accumulation in the basal ganglia, pallidum, and striatum brain regions, which is often associated with abnormal dopamine, GABA, and glutamate neural signaling. Recent studies have indicated that chronic Mn exposure at levels that are below the risk for manganism can still cause behavioral, cognitive, and motor dysfunctions via poorly understood mechanisms at the molecular and cellular levels...
2018: Frontiers in Genetics
Xin Zhao, Jinyu Liu, Shijun Yang, Dandan Song, Chen Wang, Chen Chen, Xiaoya Li, Qiuting Wang, Shasha Ge, Runmei Yang, Xiuhua Liu, Yulin Lin, Dayong Cai
ETHNOPHARMACOLOGICAL RELEVANCE: Vascular dementia (VaD) is the common cognitive disorder derived mainly from lacunar stroke (LS). The oxidative stress induced neurovascular coupling (NVC) dysfunction involves in the pathogenesis of VaD. Currently, there is no specific drug for VaD. Ling-Yang-Gou-Teng -Decoction (LG), a well-known traditional Chinese formula, has been used for preventing VaD in clinic. AIM OF THE STUDY: In this study, we aimed to investigate the underlying mechanism of LG on VaD in rats...
March 12, 2018: Journal of Ethnopharmacology
Laura B Tucker, Alexander G Velosky, Joseph T McCabe
Acquired traumatic brain injury (TBI) is frequently accompanied by persistent cognitive symptoms, including executive function disruptions and memory deficits. The Morris Water Maze (MWM) is the most widely-employed laboratory behavioral test for assessing cognitive deficits in rodents after experimental TBI. Numerous protocols exist for performing the test, which has shown great robustness in detecting learning and memory deficits in rodents after infliction of TBI. We review applications of the MWM for the study of cognitive deficits following TBI in pre-clinical studies, describing multiple ways in which the test can be employed to examine specific aspects of learning and memory...
March 12, 2018: Neuroscience and Biobehavioral Reviews
Gilda Fazzari, Merylin Zizza, Anna Di Vito, Raffaella Alò, Maria Mele, Rosalinda Bruno, Barni Tullio, Rosa Maria Facciolo, Canonaco Marcello
Recent indications are suggesting that high fat and sugar-enriched foods do not only evoke harmful physiological conditions, but they also endure evident structural alterations in cerebral regions controlling cognitive and feeding behaviors. Food consumption plus neuronal energy regulatory mechanisms seem to constitute a complex system assuring that food calories do not exceed body requirements. At the same time obesogenic-related properties of limbic feeding stations like the hypothalamus (HTH), hippocampus (HIP) and amygdala (AMY) tend to control eating habits through the interaction of distinct neuropeptides...
March 12, 2018: Behavioural Brain Research
Lucie Angel, Badiâa Bouazzaoui, Michel Isingrini, Séverine Fay, Laurence Taconnat, Sandrine Vanneste, Moïse Ledoux, Valérie Gissot, Caroline Hommet, Fréderic Andersson, Laurent Barantin, Jean-Philippe Cottier, Jérémy Pasco, Thomas Desmidt, Frédéric Patat, Vincent Camus, Jean-Pierre Remenieras
Aging is characterized by a cognitive decline of fluid abilities and is also associated with electrophysiological changes. The vascular hypothesis proposes that brain is sensitive to vascular dysfunction which may accelerate age-related brain modifications and thus explain age-related neurocognitive decline. To test this hypothesis, cognitive performance was measured in 39 healthy participants from 20 to 80 years, using tests assessing inhibition, fluid intelligence, attention and crystallized abilities. Brain functioning associated with attentional abilities was assessed by measuring the P3b ERP component elicited through an auditory oddball paradigm...
March 12, 2018: Brain and Cognition
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