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Hiv associated neurocognitive disorder

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https://www.readbyqxmd.com/read/27892704/the-effects-of-a-16-week-aerobic-exercise-programme-on-cognitive-function-in-people-living-with-hiv
#1
Adam McDermott, Lilia Zaporojan, Patricia McNamara, Colin P Doherty, Janice Redmond, Cuisle Forde, John Gormley, Mikel Egaña, Colm Bergin
High levels of cardiovascular fitness and physical activity are associated with higher levels of cognitive function in people with HIV, thus, they may reduce the risk of developing HIV-associated neurocognitive disorder (HAND). This study aimed to investigate the effects of a 16-week aerobic exercise intervention on cognitive function in people with HIV. Eleven participants living with HIV were recruited into the study. Participants were randomised into either an exercise group (n = 5), that completed a 16-week aerobic exercise programme training, 3 times per week (2 supervised sessions and one unsupervised session) or a control group (n = 6) that received no intervention...
November 28, 2016: AIDS Care
https://www.readbyqxmd.com/read/27888531/fate-of-microglia-during-hiv-1-infection-from-activation-to-senescence
#2
REVIEW
Natalie C Chen, Andrea T Partridge, Christian Sell, Claudio Torres, Julio Martín-García
Microglia support productive human immunodeficiency virus type 1 (HIV-1) infection and disturbed microglial function could contribute to the development of HIV-associated neurocognitive disorders (HAND). Better understanding of how HIV-1 infection and viral protein exposure modulate microglial function during the course of infection could lead to the identification of novel therapeutic targets for both the eradication of HIV-1 reservoir and treatment of neurocognitive deficits. This review first describes microglial origins and function in the normal central nervous system (CNS), and the changes that occur during aging...
November 26, 2016: Glia
https://www.readbyqxmd.com/read/27877102/inhibition-of-gabaergic-neurotransmission-by-hiv-1-tat-and-opioid-treatment-in-the-striatum-involves-%C3%AE-opioid-receptors
#3
Changqing Xu, Sylvia Fitting
Due to combined antiretroviral therapy (cART), human immunodeficiency virus type 1 (HIV-1) is considered a chronic disease with high prevalence of mild forms of neurocognitive impairments, also referred to as HIV-associated neurocognitive disorders (HAND). Although opiate drug use can exacerbate HIV-1 Tat-induced neuronal damage, it remains unknown how and to what extent opioids interact with Tat on the GABAergic system. We conducted whole-cell recordings in mouse striatal slices and examined the effects of HIV-1 Tat in the presence and absence of morphine (1 μM) and damgo (1 μM) on GABAergic neurotransmission...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27875832/remediating-hiv-associated-neurocognitive-disorders-via-cognitive-training-a-perspective-on-neurocognitive-aging
#4
David E Vance, Shameka L Cody, Linda Moneyham
Over 50% of adults with HIV exhibit some form of HIV-associated neurocognitive disorder, ranging from mild asymptomatic neurocognitive impairment to HIV-associated dementia. As adults age with HIV and become susceptible to cardiovascular and metabolic comorbidities, the prevalence and severity of such neurocognitive disorders are likely to increase. With compromised renal and hepatic functioning often accompanying HIV, pharmaceutical interventions to address such neurocognitive disorders may not be the best strategy and are not without risks...
2017: Interdisciplinary Topics in Gerontology and Geriatrics
https://www.readbyqxmd.com/read/27869500/lower-frailty-is-associated-with-successful-cognitive-aging-among-older-adults-with-hiv
#5
Lindsay Mk Wallace, Maria Ferrara, Thomas D Brothers, Sara Garlassi, Susan A Kirkland, Olga Theou, Stefano Zona, Cristina Mussini, David J Moore, Kenneth Rockwood, Giovanni Guaraldi
BACKGROUND: Aging with HIV poses unique and complex challenges, including avoidance of neurocognitive disorder. Our objective here is to identify the prevalence and predictors of successful cognitive aging (SCA) in sample of older adults with HIV. METHODS: One hundred three HIV-infected individuals aged 50 and older were recruited from the Modena HIV Metabolic Clinic in Italy. Participants were treated with combination antiretroviral therapy (cART) for at least one year and had suppressed plasma HIV viral load...
November 21, 2016: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/27862491/alarmins-and-central-nervous-system-inflammation-in-hiv-associated-neurological-disorders
#6
M-L Gougeon
In the era of highly active antiretroviral therapy (HAART), HIV-1-associated neurocognitive disorders (HAND) persist in infected individuals with adequate immunological and virological status. Risk factors for cognitive impairment include hepatitis C virus co-infection, host genetic factors predisposing to HAND, the early establishment of the virus in the CNS and its persistence under HAART; thus, the CNS is an important reservoir for HIV. Microglial cells are permissive to HIV-1, and NLRP3 inflammasome-associated genes were found expressed in brains of HIV-1-infected persons, contributing to brain disease...
November 16, 2016: Journal of Internal Medicine
https://www.readbyqxmd.com/read/27861379/moderate-to-severe-hiv-associated-neurocognitive-impairment-a-randomized-placebo-controlled-trial-of-lithium
#7
Eric H Decloedt, Carla Freeman, Fleur Howells, Martine Casson-Crook, Maia Lesosky, Eleni Koutsilieri, Simon Lovestone, Gary Maartens, John A Joska
BACKGROUND: HIV-associated neurocognitive disorder (HAND) remains highly prevalent despite effective anti-retroviral therapy (ART). A number of adjunctive pharmacotherapies for HAND have been studied with disappointing results, but preliminary data suggest that lithium may provide clinical benefit. In addition, the low cost of lithium would facilitate access in low- and middle-income countries which carry the greatest burden of HIV. METHODS: Our objective was to evaluate the 24-week efficacy and safety of lithium in patients with moderate to severe HAND...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27846072/hospitalization-for-anxiety-and-mood-disorders-in-hiv-infected-and-uninfected-gay-and-bisexual-men
#8
Cecilia L Moore, Andrew E Grulich, Garrett Prestage, Heather F Gidding, Fengyi Jin, Kathy Petoumenos, Iryna B Zablotska, I Mary Poynten, Limin Mao, Matthew G Law, Janaki Amin
BACKGROUND: Prevalence of anxiety and mood disorders (AMDs) in HIV-infected individuals has varied widely because of the variety of measurements used and differences in risk factor profiles between different populations. We aimed to examine the relationship between HIV status and hospitalization for AMDs in gay and bisexual men (GBM). DESIGN AND METHODS: HIV-infected (n = 557) and HIV-uninfected (n = 1325) GBM recruited in Sydney, Australia were probabilistically linked to their hospital admissions and death notifications (2000-2012)...
December 15, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27832401/nanoformulated-antiretrovirals-for-penetration-of-the-central-nervous-system-state-of-the-art
#9
REVIEW
Luisa Fiandra, Amedeo Capetti, Luca Sorrentino, Fabio Corsi
The central nervous system is a very challenging HIV-1 sanctuary. But, despite complete suppression of plasmatic viral replication with current antiretroviral therapy, signs of HIV-1 replication can still be found in the cerebrospinal fluid in some patients. The main limitation to achieving HIV-1 eradication from the brain is related to the suboptimal concentrations of antiretrovirals within this site, due to their low permeation across the blood-brain barrier. In recent years, a number of reliable nanotechnological strategies have been developed with the aim of enhancing antiretroviral drug penetration across the blood-brain barrier...
November 10, 2016: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/27828876/improving-detection-of-hiv-associated-cognitive-impairment-comparison-of-the-international-hiv-dementia-scale-and-a-brief-screening-battery
#10
Sergio Monteiro de Almeida, Rujvi Kamat, Mariana Cherner, Anya Umlauf, Clea Elisa Ribeiro, Ana Paula de Pereira, Donald Franklin, Robert K Heaton, Ronald J Ellis
OBJECTIVES: The International HIV Dementia Scale (IHDS) was developed to screen for HIV-associated dementia (HAD), but it has been used more generally for HIV-associated neurocognitive disorder (HAND). This study sought to examine the accuracy of the IHDS in a cohort of Brazilian HIV-infected individuals and compare its performance to an alternative screening battery for detecting HAND. METHODS: 108 participants (including 60 HIV-infected persons), completed the IHDS and a gold standard neuropsychological (NP) battery of 17 tests...
November 4, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27825722/current-status-of-hiv-aids-in-the-art-era
#11
REVIEW
Kazuhisa Yoshimura
Human immunodeficiency virus (HIV) spread to humans from chimpanzees (HIV-1 groups M and N), gorillas (HIV-1 groups P and O), and sooty mangabeys (HIV-2). HIV is spread mainly through blood or body fluids. Subjects can become infected with HIV by sexual contact, needle sharing, blood transfusions, or maternal transmissions as a blood-borne virus or via breast-milk. The incubation period of HIV-1 from infection to the development of AIDS ranges from 8 to 11 years. In the past 3 decades, HIV has caused a great burden to global wealth and health...
November 5, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/27822047/a-pilot-study-of-cognitive-training-with-and-without-transcranial-direct-current-stimulation-to-improve-cognition-in-older-persons-with-hiv-related-cognitive-impairment
#12
Raymond L Ownby, Amarilis Acevedo
BACKGROUND: In spite of treatment advances, HIV infection is associated with cognitive deficits. This is even more important as many persons with HIV infection age and experience age-related cognitive impairments. Both computer-based cognitive training and transcranial direct current stimulation (tDCS) have shown promise as interventions to improve cognitive function. In this study, we investigate the acceptability and efficacy of cognitive training with and without tDCS in older persons with HIV...
2016: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/27821271/screening-hiv-associated-neurocognitive-disorders-hand-among-hiv-positive-patients-attending-antiretroviral-therapy-in-south-wollo-ethiopia
#13
Million Tsegaw, Gashaw Andargie, Getnet Alem, Minale Tareke
BACKGROUND: The vast majority of people living with HIV/AIDS reside in low and middle income countries, particularly in Sub-Saharan Africa, including Ethiopia. Despite the huge number of service users in the local area, cognitive disorder among HIV patients has not been extensively studied and there is a dearth of knowledge on the subject. The objective of this study was to assess the prevalence and associated factors of HIV-associated neurocognitive disorder among people living with HIV/AIDS in antiretroviral therapy (ART) clinics...
October 26, 2016: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/27815816/a-decreasing-cd4-cd8-ratio-over-time-and-lower-csf-penetrating-antiretroviral-regimens-are-associated-with-a-higher-risk-of-neurocognitive-deterioration-independently-of-viral-replication
#14
Matteo Vassallo, R Fabre, J Durant, C Lebrun-Frenay, H Joly, M Ticchioni, F DeSalvador, A Harvey-Langton, B Dunais, M Laffon, J Cottalorda, P Dellamonica, C Pradier
Persistent immune activation is one of the suspected causes of HIV-associated neurocognitive disorders (HAND) in cART era. The CD4/CD8 ratio has been recently showed as a marker of immune activation and HAND. Our aim was to analyze if a decrease in the CD4/CD8 ratio over time could have an impact on neurocognitive deterioration. Randomly selected HIV-infected patients were followed for neuropsychological (NP) testing during a period of almost 2 years. Tests were adjusted for age, gender, and education. Patients were divided into 5 groups: normal tests (NT), neuropsychological deficit (ND, one impaired cognitive domain), asymptomatic neurocognitive disorders (ANI), mild neurocognitive disorders (MND), and HIV-associated dementia (HAD)...
November 4, 2016: Journal of Neurovirology
https://www.readbyqxmd.com/read/27810933/nmdars-adapt-to-neurotoxic-hiv-protein-tat-downstream-of-a-glun2a-ubiquitin-ligase-signaling-pathway
#15
Matthew V Green, Stanley A Thayer
: HIV-associated neurocognitive disorder (HAND) affects about half of HIV-infected patients. Infected non-neuronal cells release neurotoxic factors such as the viral protein, transactivator of transcription (Tat), that potentiate NMDAR function. NMDARs regulate synaptic changes observed following exposure to HIV proteins, which may underlie cognitive impairment in HAND patients. Here we used patch-clamp recording to measure NMDAR-mediated currents in rat hippocampal cultures following exposure to Tat...
November 3, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27798498/hiv-associated-neurocognitive-disorder
#16
David B Clifford
PURPOSE OF REVIEW: HIV-associated neurocognitive disease is the most active topic for neuroAIDS investigations at present. Although impairment is mild in patients successfully treated with modern antiviral regimens, it remains an ongoing problem for HIV patients. It is important to update the emerging research concerning HIV-associated neurocognitive disease. RECENT FINDINGS: The virus enters the brain during acute infection, with evidence for abnormal functioning that may occur early and often persists...
October 27, 2016: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/27794455/the-chitinases-expression-is-related-to-simian-immunodeficiency-virus-encephalitis-sive-and-in-hiv-encephalitis-hive
#17
C Sanfilippo, G Nunnari, A Calcagno, L Malaguarnera, K Blennow, H Zetterberg, M Di Rosa
OBJECTIVES: Human Immunodeficiency Virus (HIV) infection can induce neurocognitive complications classified as HIV-associated neurocognitive disorder (HAND). The chitinase family is associated with innate immunity cells and many infectious diseases. METHODS: We analyzed microarray datasets obtained from NCBI in order to verify the expression of chitinase family genes in hippocampus of uninfected rhesus macaques versus those with histopathologic evidence of Simian Immunodeficiency Virus Encephalitis (SIVE)...
January 2, 2017: Virus Research
https://www.readbyqxmd.com/read/27794019/latent-toxoplasma-infection-and-higher-toxoplasma-gondii-immunoglobulin-g-levels-are-associated-with-worse-neurocognitive-functioning-in-hiv-infected-adults
#18
Ajay R Bharti, Allen McCutchan, Reena Deutsch, Davey M Smith, Ronald J Ellis, Mariana Cherner, Steven P Woods, Robert K Heaton, Igor Grant, Scott L Letendre
BACKGROUND:  Human immunodeficiency virus (HIV)-associated neurocognitive disorders persist despite suppressive antiretroviral therapy (ART). Because latent Toxoplasma infection (LTI) may adversely impact brain function, we investigated its impact on neurocognitive impairment (NCI) in people living with HIV disease. METHODS:  Two hundred sixty-three HIV-infected adults underwent comprehensive neurocognitive assessments and had anti-Toxoplasma gondii immunoglobulin G (anti-Toxo IgG) measured by qualitative and quantitative enzyme-linked immunosorbent assays...
October 28, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27789723/prevalence-and-correlates-of-persistent-hiv-1-rna-in-cerebrospinal-fluid-during-antiretroviral-therapy
#19
Albert M Anderson, Jose A Muñoz-Moreno, Daniel McClernon, Ronald J Ellis, Debra Cookson, David B Clifford, Ann C Collier, Benjamin B Gelman, Christina M Marra, Justin C McArthur, J Allen McCutchan, Susan Morgello, Ned Sacktor, David M Simpson, Donald R Franklin, Robert K Heaton, Igor Grant, Scott L Letendre
BACKGROUND:  Neurocognitive disorders remain common among HIV+ adults, perhaps due to persistent HIV-1 RNA in cerebrospinal fluid (CSF) during antiretroviral therapy (ART). METHODS:  Using a single copy assay, we measured HIV-1 RNA in CSF and plasma from 220 HIV+ adults who were taking suppressive ART. Fifty-five participants were tested twice. RESULTS:  HIV-1 RNA was detected in 42.3% of CSF and 65.2% of plasma samples. Correlates of higher CSF HIV-1 RNA included higher nadir and current CD4+ counts, plasma HIV-1 RNA≥1 c/mL, and lower CPE values (Model p<0...
October 26, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27739323/computational-modeling-of-human-dopamine-transporter-structures-mechanism-and-its-interaction-with-hiv-1-transactivator-of-transcription
#20
Yaxia Yuan, Xiaoqin Huang, Jun Zhu, Chang-Guo Zhan
This is a brief review of computational modeling studies on the detailed structures and mechanism of human dopamine transporter (hDAT), as well as its interaction with HIV-1 transactivator of transcription (Tat). Extensive molecular modeling, docking and dynamics simulations have resulted in reasonable structural models of hDAT in three typical conformational states, its dopamine uptake mechanism and its interaction with Tat. The obtained hDAT models in different conformational states and their complexes with dopamine and Tat have provided novel structural and mechanistic insights concerning how hDAT uptakes dopamine and how Tat affects the dopamine uptake by hDAT...
October 14, 2016: Future Medicinal Chemistry
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