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https://www.readbyqxmd.com/read/28813936/using-upper-limb-kinematics-to-assess-cognitive-deficits-in-people-living-with-both-hiv-and-stroke
#1
Kevin D Bui, Roshan Rai, Michelle J Johnson
In this study, we aim to explore ways to objectively assess cognitive deficits in the stroke and HIV/stroke populations, where cognitive and motor impairments can be hard to separate. Using an upper limb rehabilitation robot called the Haptic TheraDrive, we collect performance error scores and motor learning data on the impaired and unimpaired limb during a trajectory tracking task. We compare these data to clinical cognitive scores. The preliminary results suggest a possible relationship between unimpaired upper limb performance error and visuospatial/executive function cognitive domains, but more work needs to be done to further investigate this...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28802912/perceptions-of-brain-health-and-cognition-in-older-african-americans-and-caucasians-with-hiv-a-focus-group-study
#2
David E Vance, C Ann Gakumo, Gwendolyn D Childs, Comfort Enah, Pariya L Fazeli
As people age with HIV, cognitive problems may become more prevalent and severe, but lifestyle behaviors (i.e., physical activity) have been shown to protect brain health and cognition. We examined the perceptions that older adults living with HIV have about protecting and improving brain health and cognition through lifestyle behaviors. Qualitative data were analyzed from four focus groups (N = 30) of African Americans and Caucasians living with HIV and at least 50 years of age. An open-coding scheme using conventional content analysis was employed...
July 26, 2017: Journal of the Association of Nurses in AIDS Care: JANAC
https://www.readbyqxmd.com/read/28800335/an-overview-of-human-immunodeficiency-virus-type-1-associated-common-neurological-complications-does-aging-pose-a-challenge
#3
Anantha Ram Nookala, Joy Mitra, Nitish S Chaudhari, Muralidhar L Hegde, Anil Kumar
With increasing survival of patients infected with human immunodeficiency virus type 1 (HIV-1), the manifestation of heterogeneous neurological complications is also increasing alarmingly in these patients. Currently, more than 30% of about 40 million HIV-1 infected people worldwide develop central nervous system (CNS)-associated dysfunction, including dementia, sensory, and motor neuropathy. Furthermore, the highly effective antiretroviral therapy has been shown to increase the prevalence of mild cognitive functions while reducing other HIV-1-associated neurological complications...
August 9, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28798420/hiv-1-tat-induced-diarrhea-evokes-an-enteric-glia-dependent-neuroinflammatory-response-in-the-central-nervous-system
#4
Giuseppe Esposito, Elena Capoccia, Stefano Gigli, Marcella Pesce, Eugenia Bruzzese, Alessandra D'Alessandro, Carla Cirillo, Alessandro di Cerbo, Rosario Cuomo, Luisa Seguella, Luca Steardo, Giovanni Sarnelli
Despite the effectiveness of combined anti-retroviral therapy, human immunodeficiency virus (HIV) infected-patients frequently report diarrhea and neuropsychological deficits. It is claimed that the viral HIV-1 Trans activating factor (HIV-1 Tat) protein is responsible for both diarrhea and neurotoxic effects, but the underlying mechanisms are not known. We hypothesize that colonic application of HIV-1 Tat activates glial cells of the enteric nervous system (EGCs), leading to a neuroinflammatory response able to propagate to the central nervous system...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798382/chronic-low-level-expression-of-hiv-1-tat-promotes-a-neurodegenerative-phenotype-with-aging
#5
Alex M Dickens, Seung Wan Yoo, Alfred C Chin, Jiadi Xu, Tory P Johnson, Amanda L Trout, Kurt F Hauser, Norman J Haughey
The widespread use of combinational antiretroviral therapies (cART) in developed countries has changed the course of Human Immunodeficiency Virus (HIV) infection from an almost universally fatal disease to a chronic infection for the majority of individuals. Although cART has reduced the severity of neurological damage in HIV-infected individuals, the likelihood of cognitive impairment increases with age, and duration of infection. As cART does not suppress the expression of HIV non-structural proteins, it has been proposed that a constitutive production of HIV regulatory proteins in infected brain cells may contribute to neurological damage...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28791662/combination-antiretroviral-therapy-improves-cognitive-performance-and-functional-connectivity-in-treatment-na%C3%A3-ve-hiv-infected-individuals
#6
Yuchuan Zhuang, Xing Qiu, Lu Wang, Qing Ma, Mark Mapstone, Amneris Luque, Miriam Weber, Madalina Tivarus, Eric Miller, Roberto C Arduino, Jianhui Zhong, Giovanni Schifitto
Our study aimed to investigate the short-term effect of combination antiretroviral therapy (cART) on cognitive performance and functional and structural connectivity and their relationship to plasma levels of antiretroviral (ARV) drugs. Seventeen ARV treatment-naïve HIV-infected individuals (baseline mean CD4 cell count, 479 ± 48 cells/mm(3)) were age matched with 17 HIV-uninfected individuals. All subjects underwent a detailed neurocognitive and functional assessment and magnetic resonance imaging. HIV-infected subjects were scanned before starting cART and 12 weeks after initiation of treatment...
August 8, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28791626/fatal-ruxolitinib-related-jc-virus-meningitis
#7
Begoña Ballesta, Héctor González, Vicente Martín, Juan J Ballesta
We report a possible association between ruxolitinib and JC virus meningitis. A 72-year-old man with myelofibrosis started treatment with ruxolitinib. Fourteen days later, the patient presented to the emergency department with fever and nausea. HIV test was negative. Ruxolitinib was suspended. Symptoms progressed with neck stiffness, cognitive impairment, and motor aphasia. CSF was positive for JC virus. MRI showed nonspecific abnormal findings. Five days after the clinical debut, the patient died. The clinical picture, MRI imaging, and positive JC virus PCR in CSF strongly suggest ruxolitinib-related JC virus meningitis...
August 8, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28790866/incidence-clinical-presentation-and-outcome-of-hiv-1-associated-cryptococcal-meningitis-during-the-highly-active-antiretroviral-therapy-era-a-nationwide-cohort-study
#8
Madeleine Touma, Line D Rasmussen, Raquel Martin-Iguacel, Frederik Neess Engsig, Nina Breinholt Stærke, Mette Stærkind, Niels Obel, Magnus Glindvad Ahlström
BACKGROUND: Human immunodeficiency virus (HIV) infection with advanced immunosuppression predisposes to cryptococcal meningitis (CM). We describe the incidence, clinical presentation, and outcome of CM in HIV-infected individuals during the highly active antiretroviral therapy (HAART) era. METHODS: A nationwide, population-based cohort of HIV-infected individuals was used to estimate incidence and mortality of CM including risk factors. A description of neurological symptoms of CM at presentation and follow-up in the study period 1995-2014 was included in this study...
2017: Clinical Epidemiology
https://www.readbyqxmd.com/read/28783374/hiv-and-cognitive-impairment-in-clinical-practice-the-evaluation-of-a-stepwise-screening-protocol-in-relation-to-clinical-outcomes-and-management
#9
Charlotte S Hakkers, Jordan M Kraaijenhof, Esther B van Oers-Hazelzet, Anne J M A Visser-Meily, Andy I M Hoepelman, Joop E Arends, Roos E Barth
Neurocognitive impairment (NCI) is an increasingly important comorbidity in an ageing HIV+ population. Despite the lack of available treatment modalities, screening for NCI is recommended. In the UMC Utrecht, yearly NCI screening is done using the Montreal Cognitive Assessment (MoCA) tool and the HIV Dementia Scale (HDS). The aim of this study was to evaluate this screening protocol in relation to clinical outcomes and management. A retrospective cohort study was performed in suppressed adult HIV+ patients...
August 7, 2017: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/28776843/self-efficacy-about-sexual-risk-protective-behaviors-intervention-impact-trajectories-among-american-indian-youth
#10
Christina M Mitchell, Carol E Kaufman, Nancy Rumbaugh Whitesell, Janette Beals, Ellen M Keane
For adolescents, normative development encompasses learning to negotiate challenges of sexual situations; of special importance are skills to prevent early pregnancy, HIV, and other sexually transmitted diseases. Disparities in sexual risk among American Indian youth point to the importance of intervening to attenuate this risk. This study explored the impact of Circle of Life (COL), an HIV prevention intervention based on social cognitive theory, on trajectories of self-efficacy (refusing sex, avoiding sexual situations) among 635 students from 13 middle schools on one American Indian reservation...
September 2017: Journal of Research on Adolescence: the Official Journal of the Society for Research on Adolescence
https://www.readbyqxmd.com/read/28767512/dissecting-the-role-of-the-crmp2-neurofibromin-complex-on-pain-behaviors
#11
Aubin Moutal, Yue Wang, Xiaofang Yang, Yingshi Ji, Shizhen Luo, Angie Dorame, Shreya S Bellampalli, Lindsey A Chew, Song Cai, Erik T Dustrude, James E Keener, Michael T Marty, Todd W Vanderah, Rajesh Khanna
Neurofibromatosis type 1 (NF1), a genetic disorder linked to inactivating mutations or homozygous deletion of the Nf1 gene, is characterized by tumorigenesis, cognitive dysfunction, seizures, migraine, and pain. Omic studies on human NF1 tissues identified an increase in expression of collapsin response mediator protein 2 (CRMP2), a cytosolic protein reported to regulate the trafficking and activity of presynaptic N-type voltage-gated calcium (Cav2.2) channels. Since neurofibromin, the protein product of the Nf1 gene, binds to and inhibits CRMP2, the neurofibromin-CRMP2 signaling cascade will likely affect Ca2+ channel activity and regulate nociceptive neurotransmission and in vivo responses to noxious stimulation...
July 31, 2017: Pain
https://www.readbyqxmd.com/read/28764704/objective-impairments-of-gait-and-balance-in-adults-living-with-hiv-1-infection-a-systematic-review-and-meta-analysis-of-observational-studies
#12
Karina Berner, Linzette Morris, Jochen Baumeister, Quinette Louw
BACKGROUND: Gait and balance deficits are reported in adults with HIV infection and are associated with reduced quality of life. Current research suggests an increased fall-incidence in this population, with fall rates among middle-aged adults with HIV approximating that in seronegative elderly populations. Gait and postural balance rely on a complex interaction of the motor system, sensory control, and cognitive function. However, due to disease progression and complications related to ongoing inflammation, these systems may be compromised in people with HIV...
August 1, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28758167/joint-data-harmonization-and-group-cardinality-constrained-classification
#13
Yong Zhang, Sang Hyun Park, Kilian M Pohl
To boost the power of classifiers, studies often increase the size of existing samples through the addition of independently collected data sets. Doing so requires harmonizing the data for demographic and acquisition differences based on a control cohort before performing disease specific classification. The initial harmonization often mitigates group differences negatively impacting classification accuracy. To preserve cohort separation, we propose the first model unifying linear regression for data harmonization with a logistic regression for disease classification...
October 2016: Medical Image Computing and Computer-assisted Intervention: MICCAI ..
https://www.readbyqxmd.com/read/28755142/erratum-to-white-matter-measures-are-near-normal-in-controlled-hiv-infection-except-in-those-with-cognitive-impairment-and-longer-hiv-duration
#14
Lucette A Cysique, James R Soares, Guangqiang Geng, Maia Scarpetta, Kirsten Moffat, Michael Green, Bruce J Brew, Roland G Henry, Caroline Rae
No abstract text is available yet for this article.
July 28, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28754798/frontline-science-cxcr7-mediates-cd14-cd16-monocyte-transmigration-across-the-blood-brain-barrier-a-potential-therapeutic-target-for-neuroaids
#15
Mike Veenstra, Dionna W Williams, Tina M Calderon, Kathryn Anastos, Susan Morgello, Joan W Berman
CD14(+)CD16(+) monocytes transmigrate into the CNS of HIV-positive people in response to chemokines elevated in the brains of infected individuals, including CXCL12. Entry of these cells leads to viral reservoirs, neuroinflammation, and neuronal damage. These may eventually lead to HIV-associated neurocognitive disorders. Although antiretroviral therapy (ART) has significantly improved the lives of HIV-infected people, the prevalence of cognitive deficits remains unchanged despite ART, still affecting >50% of infected individuals...
July 28, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28753395/neurocognitive-impairment-in-a-chronically-well-suppressed-hiv-infected-population-the-dutch-trevi-cohort-study
#16
Lennert W J van den Dries, Marlies N Wagener, Lize C Jiskoot, Merel Visser, Kevin R Robertson, Kirsten S Adriani, Eric C M van Gorp
We assessed the value of screening for cognitive abnormalities in a chronically infected HIV population (N = 388) and investigated the association with clinical correlates. The mean age was 48 years (±11), the majority of the patients were male (89%), the median duration of infection was 6 years [interquartile range (IQR) = 2-12], the median CD count was 600 (IQR = 450-780), and 326 (84%) had a viral load below 200 copies/mL. Screening for cognitive complaints was applied using the three Simioni questions and the international HIV dementia scale (iHDS)...
August 2017: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/28752495/changing-clinical-phenotypes-of-hiv-associated-neurocognitive-disorders
#17
Ned Sacktor
HIV-associated neurocognitive disorder (HAND) remains a common cause of cognitive impairment and persists in 15-55% of HIV+ individuals in the combination antiretroviral therapy (CART) era. CART is now the primary treatment for HAND, but it is effective in only a subset of patients. In the pre-CART era, HIV-associated dementia was the most common form of HAND. However, in CART-treated patients, the prevalence of HIV-associated dementia has declined substantially, and milder stages of HAND, i.e., ANI and MND predominate...
July 27, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28748448/adding-a-brief-self-report-cognitive-tool-to-the-ihds-improves-effectiveness-of-identifying-patients-with-hiv-associated-dementia-in-south-africa
#18
Hetta Gouse, Martine Casson-Crook, Eric H Decloedt, John A Joska, Kevin G F Thomas
We compared the diagnostic accuracy of two brief screening tools (the International HIV Dementia Scale (IHDS), and the IHDS combined with a novel self-report instrument, the HIV Cognitive Symptom Questionnaire (HCSQ)) with that of three brief neuropsychological screening batteries (a 2-, a 3-, and a 4-test battery, each consisting of standardized cognitive tests) in discriminating individuals with HIV-associated dementia (HAD) from those with milder forms of cognitive impairment. We analyzed data from 94 isiXhosa-speaking South African HIV-infected participants who were screened as part of a clinical trial evaluating adjunctive treatment in patients with moderate to severe HIV-associated cognitive impairment...
July 26, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28746497/revealing-an-hiv-diagnosis-for-children-and-adolescents-subsidy-for-the-practice-of-care
#19
Bruna Pase Zanon, Cristiane Cardoso de Paula, Stela Maris de Mello Padoin
Objective: To collectively build a guide for following-up on HIV diagnosis disclosure to children and adolescents in a specialized service. Method: Convergent-care research approach with observation triangulation, interview and groups, conducted from May to June 2015 with seven health professionals in a pediatric outpatient clinic for infectious diseases. Thematic content analysis was developed. Results: The discussion of understanding the disclosure, its triggers, actors involved, used strategies, and limits and possibilities listed by the professionals subsidized the construction of a guide to be applied in the stages: analyzing children's questions and curiosities; evaluating their cognitive ability; discussing the reasons to reveal; listing the professionals involved on follow-up process; including family; developing strategies for disclosure...
July 20, 2017: Revista Gaúcha de Enfermagem
https://www.readbyqxmd.com/read/28746408/microwave-magnetic-proteomics-of-macrophages-from-patients-with-hiv-associated-cognitive-impairment
#20
Yisel M Cantres-Rosario, Frances M Acevedo-Mariani, Juliana Pérez-Laspiur, William E Haskins, Marines Plaud, Yadira M Cantres-Rosario, Richard Skolasky, Israel Méndez-Bermúdez, Valerie Wojna, Loyda M Meléndez
OBJECTIVE: HIV-infected monocytes can infiltrate the blood brain barrier as differentiated macrophages to the central nervous system, becoming the primary source of viral and cellular neurotoxins. The final outcome is HIV-associated cognitive impairment (HACI), which remain prevalent today, possibly due to the longer life-span of the patients treated with combined anti-retroviral therapy. Our main goal was to characterize the proteome of monocyte-derived macrophages (MDM) from HACI patients, and its association with their cognitive status, to find novel targets for therapy...
2017: PloS One
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