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Thompson JL, Matchanova A, Beltran-Najera I, Ridgely NC, Mustafa A, Babicz MA, Hasbun R, Giordano TP, Woods SP. Preliminary Validity of a Telephone-Based Neuropsychological Battery in a Consecutive Series of Persons with HIV Disease Referred for Clinical Evaluation. ARCHIVES OF CLINICAL NEUROPSYCHOLOGY : THE OFFICIAL JOURNAL OF THE NATIONAL ACADEMY OF NEUROPSYCHOLOGISTS 2022; 38:570-585. [PMID: 36566509 DOI: 10.1093/arclin/acac104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/24/2022] [Indexed: 12/26/2022]
Abstract
OBJECTIVE The COVID-19 pandemic necessitated use of remote assessments by clinical neuropsychologists. Telehealth was particularly important for vulnerable groups, including persons living with HIV (PLWH); however, limited internet access can be a serious barrier to care. This study examined the preliminary validity of a telephone-based neuropsychological assessment in a clinical sample of PLWH. METHOD A consecutive series of 59 PLWH were assessed via telephone at an HIV clinic in the southern U.S. between April 2020 and July 2022. The battery included auditory-verbal neuropsychological tests of memory, attention, and executive functions, and questionnaires assessing self-reported mood and activities of daily living (ADL). RESULTS Study measures demonstrated acceptable internal consistency. PLWH demonstrated worse neuropsychological performance compared with expectations derived from the normal curve and an HIV-seronegative adult sample (N = 44). PLWH assessed via telephone demonstrated similar impairment rates to that of a consecutive series of PLWH (N = 41) assessed in-person immediately prior to the pandemic. Higher telephone-based global neuropsychological scores were related to younger age, more education, better fund of knowledge, White race/ethnicity, fewer medical conditions, and fewer depression symptoms. Global neuropsychological impairment was strongly and independently associated with greater dependence in ADL domains, particularly for instrumental activities. CONCLUSIONS Although telephone-based approaches to neuropsychological assessment are not ideal, these data provide support for the feasibility, internal consistency, and preliminary validity of this method in a consecutive clinical series of PLWH. The direct comparability of telephone-based and in-person neuropsychological assessments remains to be determined by prospective, counterbalanced study designs examining both PLWH and seronegative individuals.
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Affiliation(s)
| | | | | | | | - Andrea Mustafa
- Department of Psychology, University of Houston, Houston, TX, USA
| | - Michelle A Babicz
- Department of Psychology, University of Houston, Houston, TX, USA.,Mental Health and Behavioral Science Service, James A. Haley Veterans' Hospital, Tampa, FL, USA
| | - Rodrigo Hasbun
- Department of Medicine, University of Texas Health Science Center, Houston, TX, USA
| | - Thomas P Giordano
- Department of Medicine, Baylor College of Medicine, Houston, TX, USA.,Center for Innovation in Quality, Effectiveness and Safety, Michael E. DeBakey VA Medical Center, Houston, TX, USA
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2
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Grethlein D, Pirrone V, Devlin KN, Dampier W, Szep Z, Winston FK, Ontañón S, Walshe EA, Malone K, Tillman S, Ances BM, Kandadai V, Kolson DL, Wigdahl B. Examining virtual driving test performance and its relationship to individuals with HIV-associated neurocognitive disorders. Front Neurosci 2022; 16:912766. [PMID: 36090285 PMCID: PMC9448981 DOI: 10.3389/fnins.2022.912766] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/25/2022] [Indexed: 11/13/2022] Open
Abstract
Significance Existing screening tools for HIV-associated neurocognitive disorders (HAND) are often clinically impractical for detecting milder forms of impairment. The formal diagnosis of HAND requires an assessment of both cognition and impairment in activities of daily living (ADL). To address the critical need for identifying patients who may have disability associated with HAND, we implemented a low-cost screening tool, the Virtual Driving Test (VDT) platform, in a vulnerable cohort of people with HIV (PWH). The VDT presents an opportunity to cost-effectively screen for milder forms of impairment while providing practical guidance for a cognitively demanding ADL. Objectives We aimed to: (1) evaluate whether VDT performance variables were associated with a HAND diagnosis and if so; (2) systematically identify a manageable subset of variables for use in a future screening model for HAND. As a secondary objective, we examined the relative associations of identified variables with impairment within the individual domains used to diagnose HAND. Methods In a cross-sectional design, 62 PWH were recruited from an established HIV cohort and completed a comprehensive neuropsychological assessment (CNPA), followed by a self-directed VDT. Dichotomized diagnoses of HAND-specific impairment and impairment within each of the seven CNPA domains were ascertained. A systematic variable selection process was used to reduce the large amount of VDT data generated, to a smaller subset of VDT variables, estimated to be associated with HAND. In addition, we examined associations between the identified variables and impairment within each of the CNPA domains. Results More than half of the participants (N = 35) had a confirmed presence of HAND. A subset of twenty VDT performance variables was isolated and then ranked by the strength of its estimated associations with HAND. In addition, several variables within the final subset had statistically significant associations with impairment in motor function, executive function, and attention and working memory, consistent with previous research. Conclusion We identified a subset of VDT performance variables that are associated with HAND and assess relevant functional abilities among individuals with HAND. Additional research is required to develop and validate a predictive HAND screening model incorporating this subset.
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Affiliation(s)
- David Grethlein
- Diagnostic Driving, Inc., Philadelphia, PA, United States
- Department of Computer Science, The Games Artificial Intelligence and Media Systems (GAIMS) Center, College of Computing and Informatics, Drexel University, Philadelphia, PA, United States
| | - Vanessa Pirrone
- Department of Microbiology and Immunology, College of Medicine, Institute for Molecular Medicine and Infectious Disease, Drexel University, Philadelphia, PA, United States
| | - Kathryn N. Devlin
- Applied Neuro-Technologies Lab, Department of Psychological and Brain Sciences, College of Arts and Sciences, Drexel University, Philadelphia, PA, United States
| | - Will Dampier
- Department of Microbiology and Immunology, College of Medicine, Institute for Molecular Medicine and Infectious Disease, Drexel University, Philadelphia, PA, United States
| | - Zsofia Szep
- Division of Infectious Diseases and HIV Medicine, Department Medicine, Partnership Comprehensive Care Practice, College of Medicine, Drexel University, Philadelphia, PA, United States
| | - Flaura K. Winston
- Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Santiago Ontañón
- Department of Computer Science, The Games Artificial Intelligence and Media Systems (GAIMS) Center, College of Computing and Informatics, Drexel University, Philadelphia, PA, United States
| | - Elizabeth A. Walshe
- Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Kim Malone
- College of Medicine, Drexel University, Philadelphia, PA, United States
| | - Shinika Tillman
- College of Medicine, Drexel University, Philadelphia, PA, United States
| | - Beau M. Ances
- Department of Neurology, Hope Center for Neurological Disorders, School of Medicine, Washington University, St. Louis, MO, United States
| | - Venk Kandadai
- Diagnostic Driving, Inc., Philadelphia, PA, United States
| | - Dennis L. Kolson
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Brian Wigdahl
- Department of Microbiology and Immunology, College of Medicine, Institute for Molecular Medicine and Infectious Disease, Drexel University, Philadelphia, PA, United States
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3
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Hetta. G, Jane. M, Michelle. H, Anna. D, Reuben. R, Greg. K, Andre. JJ, Leslie L, Thomas. M, GF. TK. Impact of HIV on Cognitive Performance in Professional Drivers. J Acquir Immune Defic Syndr 2022; 89:527-536. [PMID: 34974470 PMCID: PMC9058184 DOI: 10.1097/qai.0000000000002899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 12/06/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND The intellectually demanding modern workplace is often dependent on good cognitive health, yet there is little understanding of how neurocognitive dysfunction related to HIV presents in employed individuals working in high-risk vocations such as driving. HIV-associated neurocognitive impairment is also associated with poorer long-term cognitive, health, and employment outcomes. SETTING This study, set in Cape Town, South Africa, assessed the effects of HIV on neuropsychological test performance in employed male professional drivers. METHOD We administered a neuropsychological test battery spanning 7 cognitive domains and obtained behavioral data, anthropometry, and medical biomarkers from 3 groups of professional drivers (68 men with HIV, 55 men with cardiovascular risk factors, and 81 controls). We compared the drivers' cognitive profiles and used multiple regression modeling to investigate whether between-group differences persisted after considering potentially confounding sociodemographic and clinical variables (ie, income, home language, depression, and the Framingham risk score). RESULTS Relative to other study participants, professional drivers with HIV performed significantly more poorly on tests assessing processing speed (P < 0.003) and attention and working memory (P = 0.018). Group membership remained a predictor of cognitive performance after controlling for potential confounders. The cognitive deficits observed in men with HIV were, however, largely characterized as being mild or asymptomatic. Consistent with this characterization, their relatively poor performance on neuropsychological testing did not generalize to self-reported impairment on activities of daily living. CONCLUSION Drivers with HIV may be at risk of poorer long-term health and employment outcomes. Programs that monitor and support their long-term cognitive health are needed.
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Affiliation(s)
- Gouse Hetta.
- HIV Mental Health Research Unit and Neurosciences Institute, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - Masson Jane.
- HIV Mental Health Research Unit and Neurosciences Institute, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - Henry Michelle.
- Centre for Higher Education Development, University of Cape Town, Cape Town, South Africa
| | - Dreyer Anna.
- HIV Mental Health Research Unit and Neurosciences Institute, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - Robbins Reuben.
- HIV Center for Clinical and Behavioral Science, New York State Psychiatric Institute and Columbia University, New York, USA
| | - Kew Greg.
- School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Joska John Andre.
- HIV Mental Health Research Unit and Neurosciences Institute, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - London Leslie
- School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Marcotte Thomas.
- HIV Neurobehavioral Research Program, Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - Thomas Kevin GF.
- ACSENT Laboratory, Department of Psychology, University of Cape Town, Cape Town, South Africa
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4
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Tierney SM, Kordovski VM, Rahman S, Medina LD, Damian RI, Collins RL, Woods SP. Neuropsychological aspects of internet-based transit navigation skills in older adults. NEUROPSYCHOLOGY, DEVELOPMENT, AND COGNITION. SECTION B, AGING, NEUROPSYCHOLOGY AND COGNITION 2022; 29:87-103. [PMID: 33225801 DOI: 10.1080/13825585.2020.1852164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/12/2020] [Indexed: 06/11/2023]
Abstract
Older adults commonly experience difficulties efficiently searching the Internet, which can adversely affect daily functioning. This study specifically examined the neuropsychological aspects of online transit planning in 50 younger (M = 22 years) and 40 older (M = 64 years) community-dwelling adults. All participants completed a neuropsychological battery, questionnaires, and measures of Internet use and skills. Participants used a live transit planning website to complete three inter-related tasks (e.g., map a route from an airport to a specific hotel at a particular time). On a fourth Internet transit task, participants were randomized into either a support condition in which they received brief goal management training or into a control condition. Results showed that older adults were both slower and less accurate than their younger counterparts in completing the first three Internet transit tasks. Within the older adults, Internet transit accuracy showed a medium association with verbal memory, executive functions, and auditory attention, but not visuomotor speed, which was the only domain associated with Internet transit task speed in both groups. The goal management training was beneficial for plan development in younger, but not older adults. The planning supports did not impact actual Internet transit task performance in either group. Findings indicate that older adults experience difficulties quickly and accurately using a transit website to plan transportation routes, which is associated with poorer higher-order neurocognitive functions (e.g., memory). Future work might examine the benefits of established memory strategies (e.g., spaced retrieval practice) for online transit planning.
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Affiliation(s)
- Savanna M Tierney
- Department of Psychology, University of Houston Houston, TX, USA
- Michael E. DeBakey VA Medical Center, Houston, TX, USA
| | | | - Samina Rahman
- Department of Psychology, University of Houston Houston, TX, USA
| | - Luis D Medina
- Department of Psychology, University of Houston Houston, TX, USA
| | - Rodica I Damian
- Department of Psychology, University of Houston Houston, TX, USA
| | - Robert L Collins
- Department of Psychology, University of Houston Houston, TX, USA
- Medical Neuropsychology of Houston, Houston, TX, USA
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5
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Robinson JJ, Walker T, Hopkins C, Bradley B, McKie P, Frank JS, Pope CN, Fazeli PL, Vance DE. Driving habits, cognition, and health-related quality of life in middle-aged and older adults with HIV. APPLIED NEUROPSYCHOLOGY. ADULT 2021; 30:492-502. [PMID: 34379556 PMCID: PMC9639014 DOI: 10.1080/23279095.2021.1960530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Cognitive impairment is known to increase with aging in people living with HIV (PLWH). Impairment in cognitive domains required for safe driving may put PLWH at risk for poor driving outcomes, decreased mobility, and health-related quality of life (HRQoL). This study described the driving behaviors of middle-aged and older PLWH and examined correlations between driving behaviors and cognitive functioning (Aim 1), and driving behaviors and HRQoL domains (Aim 2). A sample of 260 PLWH ages 40 and older completed a comprehensive assessment including a battery of cognitive tests, an HRQoL measure, and a measure of self-reported driving habits. Associations between driving habits, cognitive function, and HRQoL domains were examined. While 212 (81.54%) participants reported currently driving, only 166 (63.85%) possessed a driver's license. Several significant correlations emerged between driving habits and both cognitive and HRQoL variables, with a general pattern suggesting that current greater driving exposure was associated with better cognitive functioning and HRQoL. Given consistent associations that emerged between the social functioning HRQoL domain and several driving habits, multivariable regression was conducted to examine the unique association between an index of greater driving exposure (i.e., days driven per week) and social functioning, adjusting for potential confounders (race, income, education, depression, and global cognition). Results showed that more days driven per week was a significant, independent correlate of higher social functioning. Understanding the factors underlying driving behaviors in PLWH may contribute to interventions to promote better mobility and improved access to care.
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Affiliation(s)
- Josiah J Robinson
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Tess Walker
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Cierra Hopkins
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Brittany Bradley
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Peggy McKie
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Jennifer S Frank
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Caitlin N Pope
- Graduate Center for Gerontology, University of Kentucky, Lexington, KY, United States
- University of Kentucky, Health, Behavior & Society, Lexington, KY, United States
| | - Pariya L Fazeli
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - David E Vance
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
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6
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Yang FN, Hassanzadeh-Behbahani S, Bronshteyn M, Dawson M, Kumar P, Moore DJ, Ellis RJ, Jiang X. Connectome-based prediction of global cognitive performance in people with HIV. NEUROIMAGE-CLINICAL 2021; 30:102677. [PMID: 34215148 PMCID: PMC8102633 DOI: 10.1016/j.nicl.2021.102677] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/16/2021] [Accepted: 04/12/2021] [Indexed: 11/26/2022]
Abstract
Networks strengths predicted global cognitive performance in PWH. Model generalized to data from an independent PWH sample. Network strengths in PWH with HAND were different from either controls or PWH without HAND. Network strengths may serve as a potential biomarker to assist HAND diagnosis.
Global cognitive performance plays an important role in the diagnosis of HIV-associated neurocognitive disorders (HAND), yet to date, there is no simple way to measure global cognitive performance in people with HIV (PWH). Here, we performed connectome-based predictive modeling (CPM) to pursue a neural biomarker of global cognitive performance in PWH based on whole-brain resting-state functional connectivity. We built a CPM model that successfully predicted individual differences in global cognitive performance in the training set of 67 PWH by using leave-one-out cross-validation. This model generalized to both 33 novel PWH in the testing set and a subset of 39 PWH who completed a follow-up visit two years later. Furthermore, network strengths identified by the CPM model were significantly different between PWH with HAND and without HAND. Together, these results demonstrate that whole-brain functional network strengths could serve as a potential neural biomarker of global cognitive performance in PWH.
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Affiliation(s)
- Fan Nils Yang
- Departments of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, United States.
| | | | - Margarita Bronshteyn
- Departments of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, United States
| | - Matthew Dawson
- Department of Psychiatry, University of California, San Diego, La Jolla, CA 92093, United States
| | - Princy Kumar
- Department of Medicine, Georgetown University Medical Center, Washington, DC 20057, United States
| | - David J Moore
- Department of Psychiatry, University of California, San Diego, La Jolla, CA 92093, United States
| | - Ronald J Ellis
- Department of Psychiatry, University of California, San Diego, La Jolla, CA 92093, United States; Department of Neurosciences, University of California, San Diego, La Jolla, CA 92093, United States
| | - Xiong Jiang
- Departments of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, United States
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7
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Gouse H, Masson CJ, Henry M, Thomas KGF, Robbins RN, Kew G, London L, Joska JA, Marcotte TD. The Impact of HIV-Associated Neurocognitive Impairment on Driving Performance in Commercial Truck Drivers. AIDS Behav 2021; 25:689-698. [PMID: 32910354 DOI: 10.1007/s10461-020-03033-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Driving ability can be diminished amongst people with HIV with associated neurocognitive impairment (NCI). We explore the relationship between HIV status, NCI and driving ability in professional truck drivers. Forty male professional drivers (20 HIV-positive; mean age = 39.20 ± 7.05) completed a neuropsychological test battery, two driving simulator tasks that assessed driving ability, and a driving history and habits questionnaire. A higher proportion of HIV-positive drivers exhibited impaired overall cognitive performance (p ≤ 0.001). Overall, drivers with NCI (defined as z ≤ 1.00) were more likely than those without NCI to crash (p = 0.002). There were no significant between-group (HIV-positive versus HIV-negative) differences with regard to self-reported on-road driving events. Professional drivers with NCI, as measured on a driving simulator, are at increased risk of making driving errors under high-risk conditions compared to their neurocognitively normal counterparts. These data should inform driver health management with regard to annual medical screening and surveillance.
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Affiliation(s)
- H Gouse
- HIV Mental Health Research Unit and Neurosciences Institute, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa.
| | - C J Masson
- HIV Mental Health Research Unit and Neurosciences Institute, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - M Henry
- Centre for Higher Education Development, University of Cape Town, Cape Town, South Africa
| | - K G F Thomas
- ACSENT Laboratory, Department of Psychology, University of Cape Town, Cape Town, South Africa
| | - R N Robbins
- HIV Center for Clinical and Behavioral Science, New York State Psychiatric Institute and Columbia University, New York, NY, USA
| | - G Kew
- School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - L London
- School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - J A Joska
- HIV Mental Health Research Unit and Neurosciences Institute, Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - T D Marcotte
- HIV Neurovehavioral Research Program, Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
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8
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Meghdadi AH, Berka C, Richard C, Rupp G, Smith S, Stevanović Karić M, McShea K, Sones E, Marinković K, Marcotte T. EEG event related potentials in sustained, focused and divided attention tasks: Potential biomarkers for cognitive impairment in HIV patients. Clin Neurophysiol 2020; 132:598-611. [PMID: 33573761 PMCID: PMC9045835 DOI: 10.1016/j.clinph.2020.11.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 11/02/2020] [Accepted: 11/17/2020] [Indexed: 10/26/2022]
Abstract
OBJECTIVES The objective of this study was to assess the usability of event-related-potentials (ERPs) during sustained, focused, and divided attention tasks as biomarkers for cognitive decline in HIV patients. METHODS EEG was acquired using a mobile/wireless 9-channel system in 39 persons with HIV, with well-controlled immune function and 63 healthy control participants (HCs) during three ERP tasks: sustained attention, focused attention, and divided attention. RESULTS The HIV-group evidenced smaller late positive potential (LPP) and larger P200 amplitudes across the tasks compared to the HC group. P200 amplitude was correlated (r = 0.56) with the estimated duration of infection. Both groups showed higher P200 and LPP amplitudes in response to infrequent stimuli; this effect was not significantly different between groups. In the sustained attention task, the HIV-group showed significantly slower reaction time than controls while maintaining the same level of accuracy. In the divided attention task, the HIV-group showed a trend towards faster/less accurate responses. CONCLUSIONS HIV seropositive participants receiving anti-retroviral treatment (ART) demonstrated significantly larger P200 amplitude during three different attention tasks. This may reflect attentional deficits characterized by over-attending to non-target/distracting stimuli. SIGNIFICANCE These findings demonstrate the potential benefits of EEG-ERP metrics derived from attention tasks as neurocognitive biomarkers for HIV. This approach may reveal underlying causes of attentional deficits in HIV patients.
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Affiliation(s)
| | - Chris Berka
- Advanced Brain Monitoring Inc., Carlsbad, CA, USA
| | | | - Greg Rupp
- Advanced Brain Monitoring Inc., Carlsbad, CA, USA
| | | | | | - Kevin McShea
- Department of Psychiatry, University of California San Diego, San Diego, CA, USA
| | - Emily Sones
- Department of Psychiatry, University of California San Diego, San Diego, CA, USA
| | - Ksenija Marinković
- Psychology Department, San Diego State University, San Diego, USA; Department of Radiology, University of California, San Diego, USA
| | - Thomas Marcotte
- Department of Psychiatry, University of California San Diego, San Diego, CA, USA
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9
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Kallianpur KJ, Birn R, Ndhlovu LC, Souza SA, Mitchell B, Paul R, Chow DC, Kohorn L, Shikuma CM. Impact of Cannabis Use on Brain Structure and Function in Suppressed HIV Infection. JOURNAL OF BEHAVIORAL AND BRAIN SCIENCE 2020; 10:344-370. [PMID: 32968547 DOI: 10.4236/jbbs.2020.108022] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
BACKGROUND Brain atrophy and cognitive deficits persist among individuals with suppressed HIV disease. The impact of cannabis use is unknown. METHODS HIV+ and HIV- participants underwent cross-sectional magnetic resonance imaging and neuropsychological testing. Lifetime frequency, duration (years), and recency of cannabis use were self-reported. Relationships of cannabis use to resting-state functional connectivity (RSFC) and to 9 regional brain volumes were assessed with corrections for multiple comparisons. Peripheral blood cytokines and monocyte subsets were measured in the HIV+ group and examined in relation to cannabis exposure. RESULTS We evaluated 52 HIV+ [50.8 ± 7.1 years old; 100% on antiretroviral therapy ≥ 3 months; 83% with plasma viral load < 50 copies/mL] and 55 HIV- [54.0 ± 7.5 years old] individuals. Among HIV+ participants, recent cannabis use (within 12 months) was associated with diminished RSFC, including of occipital cortex, controlling for age. Duration of use correlated negatively with volumes of all regions (most strikingly the nucleus accumbens) independently of recent use and intracranial volume. Recent use was associated with larger caudate and white matter volumes and lower soluble vascular cell adhesion molecule-1 and monocyte chemoattractant protein-1 concentrations. Duration of use correlated positively with psychomotor speed. Use > 10 times/lifetime was linked to more somatic symptoms, better executive function, and lower CD14+CD16++ monocyte count. CONCLUSION HIV+ individuals demonstrated opposing associations with cannabis. Recent use may weaken RSFC and prolonged consumption may exacerbate atrophy of the accumbens and other brain regions. More frequent or recent cannabis use may reduce the inflammation and CD14+CD16++ monocytes that facilitate HIV neuroinvasion. HIV-specific cannabis studies are necessary.
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Affiliation(s)
- Kalpana J Kallianpur
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, University of Hawaii-Manoa, Honolulu, HI, USA
- Center for Translational Research on Aging, Kuakini Medical Center, Honolulu, HI, USA
- Hawaii Center for AIDS, University of Hawaii-Manoa, Honolulu, HI, USA
| | - Rasmus Birn
- Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Lishomwa C Ndhlovu
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, University of Hawaii-Manoa, Honolulu, HI, USA
- Weill Cornell Medicine, New York, NY, USA
| | - Scott A Souza
- Hawaii Center for AIDS, University of Hawaii-Manoa, Honolulu, HI, USA
- The Queen's Medical Center, Honolulu, HI, USA
| | - Brooks Mitchell
- Hawaii Center for AIDS, University of Hawaii-Manoa, Honolulu, HI, USA
| | - Robert Paul
- Missouri Institute of Mental Health, University of Missouri-St Louis, St. Louis, MO, USA
| | - Dominic C Chow
- Hawaii Center for AIDS, University of Hawaii-Manoa, Honolulu, HI, USA
| | - Lindsay Kohorn
- Hawaii Center for AIDS, University of Hawaii-Manoa, Honolulu, HI, USA
| | - Cecilia M Shikuma
- Hawaii Center for AIDS, University of Hawaii-Manoa, Honolulu, HI, USA
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10
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Benzodiazepine Use Is Associated With an Increased Risk of Neurocognitive Impairment in People Living With HIV. J Acquir Immune Defic Syndr 2020; 82:475-482. [PMID: 31714426 DOI: 10.1097/qai.0000000000002183] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Despite potential for dependence and adverse neurological effects, long-term benzodiazepine (BZD) use is common among people living with HIV (PLWH). As PLWH are at risk for central nervous system dysfunction, we retrospectively examined the association between BZD use and HIV-associated neurocognitive impairment (NCI). METHODS Three hundred six PLWH underwent comprehensive neurobehavioral evaluations. Current BZD use (BZD+) was determined through self-report. Using propensity scores, 153 BZD- individuals were matched to 153 BZD+ participants on demographics and medical comorbidities. Multiple regression models examined NCI and demographically adjusted neurocognitive T-scores as a function of BZD status, adjusting for estimated premorbid ability, current affective symptoms, and nadir CD4 count. Secondary analyses explored neurocognitive correlates of positive BZD urine toxicology screens (TOX+) and specific BZD agents. RESULTS Median duration of BZD use was 24 months. Current BZD use related to higher likelihood of NCI (odds ratio = 2.13, P = 0.003) and poorer global (d = -0.28, P = 0.020), processing speed (d = -0.23, P = 0.047), and motor T-scores (d = -0.32, P = 0.008). Compared with BZD-/TOX-, BZD+/TOX+ exhibited additional decrements in executive function (d = -0.48, P = 0.013), working memory (d = -0.49, P = 0.011), and delayed recall (d = -0.41, P = 0.032). For individual agents, diazepam, lorazepam, and alprazolam were most strongly associated with NCI (odds ratios >2.31). DISCUSSION BZD use may elevate risk for NCI in PLWH, potentially through diffuse neurocognitive slowing and acute compromise of recall and higher-order capacities. These effects are robust to psychosocial and HIV-specific factors and occur in comparison with a tightly matched BZD- group. Prospective and interventional studies should evaluate causal associations between NCI and BZD use and explore treatment alternatives to BZDs in PLWH.
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Rubin LH, Xu Y, Norris PJ, Wang X, Dastgheyb R, Fitzgerald KC, Keating SM, Kaplan RC, Maki PM, Anastos K, Springer G, Benning L, Kassaye S, Gustafson DR, Valcour VG, Williams DW. Early Inflammatory Signatures Predict Subsequent Cognition in Long-Term Virally Suppressed Women With HIV. Front Integr Neurosci 2020; 14:20. [PMID: 32390808 PMCID: PMC7193823 DOI: 10.3389/fnint.2020.00020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 03/23/2020] [Indexed: 12/16/2022] Open
Abstract
Immunologic function is an important determinant of cognition. Here we examined the contribution of early immune signatures to cognitive performance among HIV-infected, virally suppressed women (HIV+VS) and in HIV-uninfected (HIV-) women. Specifically, we measured serum inflammatory markers, developed combinatory immune signatures, and evaluated their associations with cognition. Forty-nine HIV+VS women in the Women’s Interagency HIV Study (WIHS) who achieved viral suppression shortly after effective antiretroviral therapy (ART) initiation, and 56 matched HIV− women were selected. Forty-two serum inflammatory markers were measured within 2 years of effective ART initiation for HIV+VS women, and at an initial timepoint for HIV− women. The same inflammatory markers were also measured approximately 1, 7, and 12 years later for all women. Of the 105 women with complete immune data, 83 (34 HIV+VS, 49 HIV−) also had cognitive data available 12 years later at ≥1 time points (median = 3.1). We searched for combinatory immune signatures by adapting a dynamic matrix factorization analytic method that builds upon Tucker decomposition followed by Ingenuity® Pathway Analysis to facilitate data interpretation. Seven combinatory immune signatures emerged based on the Frobenius residual. Three signatures were common between HIV+VS and HIV− women, while four signatures were unique. These inflammatory signatures predicted subsequent cognitive performance in both groups using mixed-effects modeling, but more domain-specific associations were significant in HIV+VS than HIV− women. Leukocyte influx into brain was a major contributor to cognitive function in HIV+VS women, while T cell exhaustion, inflammatory response indicative of depressive/psychiatric disorders, microglial activity, and cytokine signaling predicted both global and domain-specific performance for HIV− women. Our findings suggest that immune signatures may be useful diagnostic, prognostic, and immunotherapeutic targets predictive of subsequent cognitive performance. Importantly, they also provide insight into common and distinct inflammatory mechanisms underlying cognition in HIV− and HIV+VS women.
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Affiliation(s)
- Leah H Rubin
- Department of Neurology, Johns Hopkins University, Baltimore, MD, United States.,Department of Psychiatry, Johns Hopkins University, Baltimore, MD, United States.,Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, United States
| | - Yanxun Xu
- Department of Applied Mathematics and Statistics, Johns Hopkins University, Baltimore, MD, United States.,Division of Biostatistics and Bioinformatics, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, United States
| | - Philip J Norris
- Department of Laboratory Medicine, Vitalant Research Institute, University of California, San Francisco, San Francisco, CA, United States
| | - Xuzhi Wang
- Department of Applied Mathematics and Statistics, Johns Hopkins University, Baltimore, MD, United States
| | - Raha Dastgheyb
- Department of Neurology, Johns Hopkins University, Baltimore, MD, United States
| | | | - Sheila M Keating
- Department of Laboratory Medicine, Vitalant Research Institute, University of California, San Francisco, San Francisco, CA, United States
| | - Robert C Kaplan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Pauline M Maki
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, United States.,Department of Psychology, University of Illinois at Chicago, Chicago, IL, United States
| | - Kathryn Anastos
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States.,Department of General Internal Medicine, Albert Einstein College of Medicine, Bronx, NY, United States.,Department of Obstetrics and Gynecology and Women's Health, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Gayle Springer
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, United States
| | - Lorie Benning
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, United States
| | - Seble Kassaye
- Department of Medicine, Georgetown University, Washington, DC, United States
| | - Deborah R Gustafson
- Department of Neurology, SUNY Downstate Health Sciences University, Brooklyn, NY, United States
| | - Victor G Valcour
- Department of Neurology, University of California, San Francisco, San Francisco, CA, United States
| | - Dionna W Williams
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University, Baltimore, MD, United States.,Division of Clinical Pharmacology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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12
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Kordovski VM, Tierney SM, Woods SP. Conceptualizing and Assessing Everyday Functioning in the Context of HIV-Associated Neurocognitive Disorders. Curr Top Behav Neurosci 2019; 50:329-346. [PMID: 30610667 DOI: 10.1007/7854_2018_78] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Combination antiretroviral therapy has reduced the rates of severe HIV-associated neurocognitive disorders (HAND), but the prevalence of milder forms of HAND that can affect everyday functioning remains high. As HIV-infected adults approach near-normal life expectancies, they may become increasingly susceptible to declines in everyday functioning secondary to a variety of physical and mental factors, including HAND. Although impairments in everyday functioning are a hallmark of HAND diagnoses and can adversely influence quality of life, there are no gold standard measures of this fundamentally important and complex construct. This chapter provides a brief review of the various self-report, clinician-rated, and performance-based methods by which everyday functioning is measured in the setting of HIV disease, including global activities of daily living and specific domains of medication adherence, financial management, automobile driving, and vocational functioning.
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13
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Pope CN, Stavrinos D, Vance DE, Woods AJ, Bell TR, Ball KK, Fazeli PL. A pilot investigation on the effects of combination transcranial direct current stimulation and speed of processing cognitive remediation therapy on simulated driving behavior in older adults with HIV. TRANSPORTATION RESEARCH. PART F, TRAFFIC PSYCHOLOGY AND BEHAVIOUR 2018; 58:1061-1073. [PMID: 31354384 PMCID: PMC6660181 DOI: 10.1016/j.trf.2018.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cognitive impairments seen in people living with HIV (PLWH) are associated with difficulties in everyday functioning, specifically driving. This study utilized speed of processing cognitive remediation therapy (SOP-CRT) with transcranial direct current stimulation (tDCS) to gauge the feasibility and impact on simulated driving. Thirty PLWH (M age = 54.53, SD = 3.33) were randomly assigned to either: sham tDCS SOP-CRT or active tDCS SOP-CRT. Seven indicators of simulated driving performance and safety were obtained. Repeated measures ANOVAs controlling for driver's license status (valid and current license or expired/no license) revealed a large training effect on average driving speed. Participants who received active tDCS SOP-CRT showed a slower average driving speed (p = 0.020, d = 0.972) than those who received sham tDCS SOP-CRT. Non-significant small-to-medium effects were seen for driving violations, collisions, variability in lane positioning, and lane deviations. Combination tDCS SOP-CRT was found to increase indices of cautionary simulated driving behavior. Findings reveal a potential avenue of intervention and rehabilitation for improving driving safety among vulnerable at-risk populations, such as those aging with chronic disease.
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Affiliation(s)
- C. N. Pope
- Center for Injury Research and Policy, The Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA
| | - D. Stavrinos
- University of Alabama at Birmingham, Department of Psychology, Birmingham AL
| | - D. E. Vance
- University of Alabama at Birmingham, School of Nursing, Birmingham AL
| | - A. J. Woods
- University of Florida, Department of Clinical and Health Psychology, Gainesville, FL
| | - T. R. Bell
- University of Alabama at Birmingham, Department of Psychology, Birmingham AL
| | - K. K. Ball
- University of Alabama at Birmingham, Department of Psychology, Birmingham AL
| | - P. L. Fazeli
- University of Alabama at Birmingham, School of Nursing, Birmingham AL
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14
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Zahr NM. The Aging Brain With HIV Infection: Effects of Alcoholism or Hepatitis C Comorbidity. Front Aging Neurosci 2018; 10:56. [PMID: 29623036 PMCID: PMC5874324 DOI: 10.3389/fnagi.2018.00056] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 02/20/2018] [Indexed: 12/11/2022] Open
Abstract
As successfully treated individuals with Human Immunodeficiency Virus (HIV)-infected age, cognitive and health challenges of normal aging ensue, burdened by HIV, treatment side effects, and high prevalence comorbidities, notably, Alcohol Use Disorders (AUD) and Hepatitis C virus (HCV) infection. In 2013, people over 55 years old accounted for 26% of the estimated number of people living with HIV (~1.2 million). The aging brain is increasingly vulnerable to endogenous and exogenous insult which, coupled with HIV infection and comorbid risk factors, can lead to additive or synergistic effects on cognitive and motor function. This paper reviews the literature on neuropsychological and in vivo Magnetic Resonance Imaging (MRI) evaluation of the aging HIV brain, while also considering the effects of comorbidity for AUD and HCV.
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Affiliation(s)
- Natalie M Zahr
- Neuroscience Program, SRI International, Menlo Park, CA, United States.,Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford University, Stanford, CA, United States
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15
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Babiloni C, Noce G, Pennica A, Onorati P, Capotosto P, Del Percio C, Roma P, Correr V, Piccinni E, Toma G, Soricelli A, Di Campli F, Gianserra L, Ciullini L, Aceti A, Teti E, Sarmati L, Crocetti G, Ferri R, Catania V, Pascarelli MT, Andreoni M, Ferracuti S. Cortical sources of resting state electroencephalographic rhythms probe brain function in naïve HIV individuals. Clin Neurophysiol 2017; 129:431-441. [PMID: 29304418 DOI: 10.1016/j.clinph.2017.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 10/31/2017] [Accepted: 12/05/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Here we evaluated the hypothesis that resting state electroencephalographic (EEG) cortical sources correlated with cognitive functions and discriminated asymptomatic treatment-naïve HIV subjects (no AIDS). METHODS EEG, clinical, and neuropsychological data were collected in 103 treatment-naïve HIV subjects (88 males; mean age 39.8 years ± 1.1 standard error of the mean, SE). An age-matched group of 70 cognitively normal and HIV-negative (Healthy; 56 males; 39.0 years ± 2.0 SE) subjects, selected from a local university archive, was used for control purposes. LORETA freeware was used for EEG source estimation in fronto-central, temporal, and parieto-occipital regions of interest. RESULTS Widespread sources of delta (<4 Hz) and alpha (8-12 Hz) rhythms were abnormal in the treatment-naïve HIV group. Fronto-central delta source activity showed a slight but significant (p < 0.05, corrected) negative correlation with verbal and semantic test scores. So did parieto-occipital delta/alpha source ratio with memory and composite cognitive scores. These sources allowed a moderate classification accuracy between HIV and control individuals (area under the ROC curves of 70-75%). CONCLUSIONS Regional EEG abnormalities in quiet wakefulness characterized treatment-naïve HIV subjects at the individual level. SIGNIFICANCE This EEG approach may contribute to the management of treatment-naïve HIV subjects at risk of cognitive deficits.
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Affiliation(s)
- Claudio Babiloni
- Department of Physiology and Pharmacology, University of Rome "La Sapienza", Rome, Italy; Institute for Research and Medical Care, IRCCS San Raffaele Pisana, Rome, Italy.
| | - Giuseppe Noce
- Department of Integrated Imaging, IRCCS SDN, Naples, Italy
| | - Alfredo Pennica
- Infectious Diseases, Faculty of Medicine and Psychology, University of Rome "La Sapienza", Rome, Italy
| | - Paolo Onorati
- Department of Physiology and Pharmacology, University of Rome "La Sapienza", Rome, Italy; Institute for Research and Medical Care, IRCCS San Raffaele Pisana, Rome, Italy
| | - Paolo Capotosto
- Department of Neuroscience, Imaging and Clinical Sciences, and ITAB-Institute of Advanced Biomedical Technologies "G. d'Annunzio" University of Chieti and Pescara, Chieti, Italy
| | | | - Paolo Roma
- Department of Neurology and Psychiatry, University of Rome "La Sapienza", Rome, Italy
| | - Valentina Correr
- Department of Neurology and Psychiatry, University of Rome "La Sapienza", Rome, Italy
| | - Elisa Piccinni
- Department of Neurology and Psychiatry, University of Rome "La Sapienza", Rome, Italy
| | - Ginevra Toma
- Department of Physiology and Pharmacology, University of Rome "La Sapienza", Rome, Italy
| | - Andrea Soricelli
- Department of Integrated Imaging, IRCCS SDN, Naples, Italy; Department of Motor Sciences and Healthiness, University of Naples Parthenope, Naples, Italy
| | - Francesco Di Campli
- Infectious Diseases, Faculty of Medicine and Psychology, University of Rome "La Sapienza", Rome, Italy
| | - Laura Gianserra
- Infectious Diseases, Faculty of Medicine and Psychology, University of Rome "La Sapienza", Rome, Italy
| | - Lorenzo Ciullini
- Infectious Diseases, Faculty of Medicine and Psychology, University of Rome "La Sapienza", Rome, Italy
| | - Antonio Aceti
- Infectious Diseases, Faculty of Medicine and Psychology, University of Rome "La Sapienza", Rome, Italy
| | - Elisabetta Teti
- Clinical Infectious Diseases, University of Rome "Tor Vergata", Rome, Italy
| | - Loredana Sarmati
- Clinical Infectious Diseases, University of Rome "Tor Vergata", Rome, Italy
| | - Gloria Crocetti
- Infectious Diseases, Faculty of Medicine and Psychology, University of Rome "La Sapienza", Rome, Italy
| | - Raffaele Ferri
- Department of Neurology, IRCCS Oasi Institute for Research on Mental Retardation and Brain Aging, Troina, Enna, Italy
| | - Valentina Catania
- Department of Neurology, IRCCS Oasi Institute for Research on Mental Retardation and Brain Aging, Troina, Enna, Italy
| | - Maria Teresa Pascarelli
- Department of Neurology, IRCCS Oasi Institute for Research on Mental Retardation and Brain Aging, Troina, Enna, Italy
| | - Massimo Andreoni
- Clinical Infectious Diseases, University of Rome "Tor Vergata", Rome, Italy
| | - Stefano Ferracuti
- Department of Neurology and Psychiatry, University of Rome "La Sapienza", Rome, Italy
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16
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Wang YQ, Pan Y, Zhu S, Wang YG, Shen ZH, Wang K. Selective impairments of alerting and executive control in HIV-infected patients: evidence from attention network test. BEHAVIORAL AND BRAIN FUNCTIONS : BBF 2017; 13:11. [PMID: 28651626 PMCID: PMC5485500 DOI: 10.1186/s12993-017-0129-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 05/30/2017] [Indexed: 11/10/2022]
Abstract
BACKGROUND Attention ability can be subdivided into three functionally independent networks, i.e., alerting network, orienting network, and executive network. Previous literature has documented that deficits in attention are a common consequence of HIV infection. However, the precise nature of deficits of attention in HIV-infected patients is poorly understood. Accordingly, the aim of the study was to identify whether the HIV-infected patients showed a specific attention network deficit or a general attentional impairment. METHODS We investigated 27 HIV-infected patients and 31 normal controls with the Attention Network Test (ANT). RESULTS The patients exhibited less efficient alerting network and executive network than controls. No significant difference was found in orienting network effect between groups. Our results also indicate a tendency for poorer efficiency on alerting attention and executive attention in patients with CD4 ≤ 200. CONCLUSIONS Our findings suggest that HIV-infected patients exhibited selective impairments of attention network of alerting and executive control. The link between lower CD4 T cell count and poorer attention network function imply the importance of starting antiretroviral therapy earlier to avoid irreversible neurocognitive impairment.
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Affiliation(s)
- Yi-Quan Wang
- Department of Brain Functioning Research, The Seventh Hospital of Hangzhou, 305 Tianmushan Road, Hangzhou, 310013, Zhejiang, China
- Clinical Institute of Mental Health in Hangzhou, Anhui Medical University, Hangzhou, Zhejiang, China
| | - Yang Pan
- School of Media and Design, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
| | - Sheng Zhu
- The Fifth Hospital of Ruian, Ruian, Zhejiang, China
| | - Yong-Guang Wang
- Department of Brain Functioning Research, The Seventh Hospital of Hangzhou, 305 Tianmushan Road, Hangzhou, 310013, Zhejiang, China.
- Clinical Institute of Mental Health in Hangzhou, Anhui Medical University, Hangzhou, Zhejiang, China.
- Collaborative Innovation Center for Neuropsychiatric Disorders and Mental Health, Hefei, Anhui, China.
| | - Zhi-Hua Shen
- Department of Brain Functioning Research, The Seventh Hospital of Hangzhou, 305 Tianmushan Road, Hangzhou, 310013, Zhejiang, China
- Clinical Institute of Mental Health in Hangzhou, Anhui Medical University, Hangzhou, Zhejiang, China
| | - Kai Wang
- Collaborative Innovation Center for Neuropsychiatric Disorders and Mental Health, Hefei, Anhui, China
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
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Kabuba N, Anitha Menon J, Franklin DR, Heaton RK, Hestad KA. Use of Western Neuropsychological Test Battery in Detecting HIV-Associated Neurocognitive Disorders (HAND) in Zambia. AIDS Behav 2017; 21:1717-1727. [PMID: 27278547 PMCID: PMC5145764 DOI: 10.1007/s10461-016-1443-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This is a study of neuroAIDS in sub-Saharan Africa, involving 266 Zambian adults infected with the human immunodeficiency virus (HIV), clade C. All HIV+ participants were receiving combination antiretroviral therapy (CART), and were administered a comprehensive neuropsychological (NP) test battery covering seven ability domains that are frequently affected by neuroAIDS. The battery was developed in the U.S. but has been validated in other international settings and has demographically-corrected normative standards based upon 324 healthy Zambian adults. Compared to the healthy Zambian controls, the HIV+ sample performed worse on the NP battery with a medium effect size (Cohen's d = 0.64). 34.6 % of the HIV+ individuals had global NP impairment and met criteria for HIV associated neurocognitive disorder (HAND). The results indicate that the Western-developed NP test battery is appropriate for use in Zambia and can serve as a viable HIV and AIDS management tool.
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Affiliation(s)
- Norma Kabuba
- Department of Psychology, The University of Zambia, Great East Road Campus, P.O BOX 32379, Lusaka, Zambia.
- Department of Psychology, The Norwegian University of Science and Technology, Trondheim, Norway.
| | - J Anitha Menon
- Department of Psychology, The University of Zambia, Great East Road Campus, P.O BOX 32379, Lusaka, Zambia
| | - Donald R Franklin
- Department of Psychiatry, University of California, San Diego, San Diego, CA, USA
| | - Robert K Heaton
- Department of Psychiatry, University of California, San Diego, San Diego, CA, USA
| | - Knut A Hestad
- Department of Psychology, The Norwegian University of Science and Technology, Trondheim, Norway
- Department of Research, Innlandet Hospital Trust, Hamar, Norway
- Hedmark University College, 2418, Elverum, Norway
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18
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Vance D, Fazeli P, Shacka J, Nicholson W, McKie P, Raper J, Azuero A, Wadley V, Ball K. Testing a Computerized Cognitive Training Protocol in Adults Aging With HIV-Associated Neurocognitive Disorders: Randomized Controlled Trial Rationale and Protocol. JMIR Res Protoc 2017; 6:e68. [PMID: 28446421 PMCID: PMC5422019 DOI: 10.2196/resprot.6625] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 10/20/2016] [Accepted: 10/22/2016] [Indexed: 12/26/2022] Open
Abstract
Background HIV-associated neurocognitive disorders occur in nearly 50% of adults with HIV. Such disorders can interfere with everyday functioning such as driving and medication adherence. Therefore, cognitive interventions are needed to address such neurocognitive disorders as well as improve everyday functioning, especially as people age with HIV. Objective This article reports and discusses the overall rationale and development of speed of processing training, a computerized Internet cognitive training program, to improve this specific neurocognitive ability as well as everyday functioning and quality of life in adults aging with HIV. Although this protocol has been shown to improve speed of processing, everyday functioning, and quality of life in healthy, community-dwelling older adults in the advanced cognitive training in vital elderly (ACTIVE) study, its efficacy in adults aging with HIV has not been established. Nevertheless, such a cognitive intervention is particularly germane as 52%-59% of adults with HIV experience HIV-associated neurocognitive disorders (HAND), and both the frequency and severity of such disorders may increase with advancing age. Methods The description of this longitudinal randomized controlled trial covers the following: (1) rationale for speed of processing training in this clinical population, (2) overview of overall study design, (3) eligibility criteria and HAND, (4) intervention dosage, (5) assessment battery, and (6) examination of biomarkers. Results The project was funded in April 2016 and enrolment is on-going. The first results are expected to be submitted for publication in 2020. Conclusions Similar novel cognitive intervention approaches are suggested as they may be of value to those with HAND and may utilize similar features of this current randomized controlled trial (RCT) protocol to examine their therapeutic efficacy. Trial Registration ClinicalTrials.gov NCT02758093; https://clinicaltrials.gov/ct2/show/NCT02758093 (Archived by Webcite at http://www.webcitation.org/6p8C5fBCX)
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Affiliation(s)
- David Vance
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Pariya Fazeli
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - John Shacka
- Department of Pharmacology & Toxicology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - William Nicholson
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Peggy McKie
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - James Raper
- School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Andres Azuero
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Virginia Wadley
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Karlene Ball
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, United States
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19
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Feasibility of a Home-Based Speed of Processing Training Program in Middle-Aged and Older Adults With HIV. J Neurosci Nurs 2016; 47:247-54. [PMID: 26153789 DOI: 10.1097/jnn.0000000000000147] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
There has been much optimism over the positive impact of combination antiretroviral therapy (cART) on life expectancy for people with HIV; however, those aging with HIV fear potential day-to-day challenges associated with the development of cognitive deficits. The presence of cognitive deficits has generated major safety concerns because it has been shown to impact driving, mobility, and employment. Given the efficacy of a computerized speed of processing training program administered in the laboratory to older adults and adults with HIV, this study was designed to determine the feasibility of using a home-based speed of processing training program to improve cognitive function in middle-aged and older adults with HIV. In this within-subject pre-post experimental design, 20 middle-aged and older adults (i.e., age of 40+ years) with HIV were administered a brief neuropsychological assessment to gauge their baseline cognitive function before participating in a 10-hour home-based computerized cognitive remediation training program. In addition to self-reported cognitive gains, a 6-week posttest indicated significant improvements on the Useful Field of View, a measure of speed of processing and possible transfer to the Timed Instrumental Activities of Daily Living test, a measure of everyday functioning. These findings show that speed of processing training can successfully improve cognitive function in this vulnerable population even when administered in remote settings such as the privacy of one's home.
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Odiase FE, Ogunrin OA, Ogunniyi AA. Memory Performance in HIV/AIDS - A Prospective Case Control Study. Can J Neurol Sci 2014; 34:154-9. [PMID: 17598591 DOI: 10.1017/s0317167100005977] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Background:Memory impairment, usually impaired retrieval of information, has been described in HIV/AIDS, especially among those with severe illness. Neuro-cognitive disturbances in HIV/AIDS have been linked to poor quality of life and medication adherence. This prospective, case-control study was designed to assess the verbal and non-verbal memory as well as the attention abilities of Nigerian Africans with HIV/AIDS and correlate their performances with their CD4+ T lymphocytes (CD4+) counts.Methods:A total of 288 randomly selected subjects, comprising 96 HIV-positive symptomatic patients, 96 HIV-positive asymptomatic patients and 96 HIV-negative controls, participated in the study. The subjects were age-, sex-, and level of education matched. The Recognition Memory Test and Choice Reaction Time tasks, components of the computer-assisted neuropsychological tests battery- the Iron Psychology ‘FePsy’ were used for cognitive assessments.Results:The mean memory scores of the HIV-positive asymptomatic subjects did not differ significantly from the controls (p>0.05) but the HIV-positive symptomatic subjects' scores were significantly lower than the controls (p<0.05). Both HIV-positive groups had psychomotor slowing and impaired attention (p<0.05). The HIV-positive subjects with CD4+ counts <200/μl and between 200 and 499/μl had significant memory impairment (p<0.001 and p<0.001 respectively) but there was no significant impairment among those with count ≥500/μl. Impaired ability for sustained attention was however present irrespective of the CD4+ level relative to controls (p<0.001).Conclusions:We concluded that there was no significant memory disturbance among HIV-positive asymptomatic subjects despite the presence of impaired attention and psychomotor slowing, and that the severity of immune suppression (as indicated by the CD4+ T lymphocytes count) is a strong determinant of cognitive decline in HIV/AIDS.
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Affiliation(s)
- Francis E Odiase
- Neurology Unit, Department of Medicine, University of Benin Teaching Hospital, Benin City, Nigeria
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Rubin LH, Sundermann EE, Cook JA, Martin EM, Golub ET, Weber KM, Cohen MH, Crystal H, Cederbaum JA, Anastos K, Young M, Greenblatt RM, Maki PM. Investigation of menopausal stage and symptoms on cognition in human immunodeficiency virus-infected women. Menopause 2014; 21:997-1006. [PMID: 24496085 PMCID: PMC4119867 DOI: 10.1097/gme.0000000000000203] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE We evaluated the separate and interactive associations of menopausal stage, menopausal symptoms, and human immunodeficiency virus (HIV) infection with cognition. We hypothesized that HIV-infected perimenopausal women would show the greatest cognitive difficulties and that menopausal symptoms would be inversely associated with cognition. METHODS This cross-sectional study included 708 HIV-infected and 278 HIV-uninfected premenopausal, perimenopausal, or postmenopausal women (64% African American; median age, 44 y) from the Women's Interagency HIV Study. Participants completed tests of verbal learning and memory, attention/processing speed, and executive function. We administered a menopausal symptom questionnaire that assessed anxiety, vasomotor, and sleep symptoms and obtained measures of depressive symptoms. RESULTS In multivariable regression analyses controlling for relevant covariates, HIV infection, but not menopausal stage, was associated with worse performance on all cognitive measures (P's < 0.05). Depressive symptoms were associated with lower cognitive performance on measures of verbal learning and memory, attention, and executive function (P's < 0.05); anxiety symptoms were associated with lower performance on measures of verbal learning and memory (P's < 0.05). Vasomotor symptoms were associated with worse attention (P < 0.05). HIV and anxiety symptoms interacted to influence verbal learning (P's < 0.05); elevated anxiety was associated with worse verbal learning in HIV-infected women only. CONCLUSIONS Vasomotor, depressive, and anxiety symptoms, but not menopausal stage, are associated with worse cognitive performance in both HIV-infected and HIV-uninfected women, although elevated anxiety symptoms are more associated with verbal learning deficits in HIV-infected women. Because cognitive problems can interfere with everyday functioning, including treatment adherence, it may be important to screen and treat anxiety in HIV-infected women.
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Affiliation(s)
- Leah H. Rubin
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL
| | - Erin E. Sundermann
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL
| | - Judith A. Cook
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL
| | | | - Elizabeth T. Golub
- Department of Epidemiology, Johns Hopkins School of Public Health, Baltimore, MD
| | - Kathleen M. Weber
- The Core Center, Cook County Health and Hospital System and Hektoen Institute of Medicine, Chicago, IL
| | - Mardge H. Cohen
- The Core Center, Cook County Health and Hospital System and Hektoen Institute of Medicine, Chicago, IL
- Departments of Medicine Stroger Hospital and Rush University, Chicago, IL
| | - Howard Crystal
- Department of Neurology, SUNY Downstate Medical Center, Brooklyn NY
| | - Julie A. Cederbaum
- University of Southern California, School of Social Work, Los Angeles, CA
| | - Kathyrn Anastos
- Department of Medicine and Epidemiology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY
| | - Mary Young
- Georgetown University School of Medicine, Washington, DC
| | - Ruth M. Greenblatt
- Departments of Clinical Pharmacy, Medicine, Epidemiology and Biostatistics, University of California, San Francisco, CA
| | - Pauline M. Maki
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL
- Department of Psychology, University of Illinois at Chicago, Chicago, IL
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Vance DE, Fazeli PL, Ball DA, Slater LZ, Ross LA. Cognitive functioning and driving simulator performance in middle-aged and older adults with HIV. J Assoc Nurses AIDS Care 2014; 25:e11-26. [PMID: 24513104 DOI: 10.1016/j.jana.2013.12.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Accepted: 12/02/2013] [Indexed: 11/30/2022]
Abstract
Nearly half of people living with HIV experience cognitive deficits that may impact instrumental activities of daily living. As the number of people aging with HIV increases, concerns mount that disease-related cognitive deficits may be compounded by age-related deficits, which may further compromise everyday functions such as driving. In this cross-sectional pilot study, during a 2.5-hour visit, 26 middle-aged and older adults (40 + years) were administered demographic, health, psychosocial, and driving habits questionnaires; cognitive assessments; and driving simulator tests. Although CD4+ T lymphocyte count and viral load were unrelated to driving performance, older age was related to poorer driving. Furthermore, poorer visual speed of processing performance (i.e., useful field of view) was related to poorer driving performance (e.g., average gross reaction time). Mixed findings were observed between driving performance and cognitive function on self-reported driving habits of participants. Implications for these findings on nursing practice and research are posited.
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Vance DE, McDougall GJ, Wilson N, Debiasi MO, Cody SL. Cognitive Consequences of Aging with HIV: Implications for Neuroplasticity and Rehabilitation. TOPICS IN GERIATRIC REHABILITATION 2014; 30:35-45. [PMID: 24817785 PMCID: PMC4013283 DOI: 10.1097/tgr.0000000000000002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Combination active antiretroviral therapy prevents HIV from replicating and ravaging the immune system, thus allowing people to age with this disease. Unfortunately, the synergistic effects of HIV and aging can predispose many to become more at-risk of developing cognitive deficits which can interfere with medical management, everyday functioning, and quality of life. The purpose of this article is to describe the role of cognitive reserve and neuroplasticity on cognitive functioning in those aging with this disease. Specifically, the role of environment and the health of these individuals can compromise cognitive functioning. Fortunately, some cognitive interventions such as prevention and management of co-morbidities, cognitive remediation therapy, and neurotropic medications may be of value in preventing and rehabilitating the cognitive consequences of aging with HIV. Novel approaches such as cognitive prescriptions, transcranial direct stimulation, and binaural beat therapy may also be considered as possible techniques for cognitive rehabilitation.
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Affiliation(s)
- David E. Vance
- Associate Director of the Center for Nursing Research, PhD Coordinator, NB Building Room 2M026, School of Nursing, 1701 University Boulevard, University of Alabama at Birmingham (UAB), Birmingham, AL 35294-1210, Office: 205-934-7589, Fax: 205-996-7183
| | - Graham J. McDougall
- Martha Lucinda Luker Saxon Endowed Chair in Rural Health Nursing, The University of Alabama, Capstone College of Nursing, Box 870358, Tuscaloosa, AL 35487-0358, Office: 205-348-0650
| | - Natalie Wilson
- University of Alabama at Birmingham. School of Nursing, 1701 University Blvd. Birmingham, AL 35294-1210. Phone: 980-355-1064
| | - Marcus Otavio Debiasi
- School of Nursing, NB Building Room 352, University Boulevard, University of Alabama at Birmingham (UAB), Birmingham, AL 35294-1210, Office: 205-996-9825
| | - Shameka L. Cody
- School of Nursing, NB Building Room 2M026, 1701 University Boulevard, University of Alabama at Birmingham (UAB), Birmingham, AL 35294-1210, Office: 205-934-7589, Fax: 205-996-7183
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24
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Doyle KL, Morgan EE, Morris S, Smith DM, Little S, Iudicello JE, Blackstone K, Moore DJ, Grant I, Letendre SL, Woods SP. Real-world impact of neurocognitive deficits in acute and early HIV infection. J Neurovirol 2013; 19:565-73. [PMID: 24277439 DOI: 10.1007/s13365-013-0218-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 10/17/2013] [Accepted: 10/24/2013] [Indexed: 12/13/2022]
Abstract
The acute and early period of HIV-1 infection (AEH) is characterized by neuroinflammatory and immunopathogenic processes that can alter the integrity of neural systems and neurocognitive functions. However, the extent to which central nervous system changes in AEH confer increased risk of real-world functioning (RWF) problems is not known. In the present study, 34 individuals with AEH and 39 seronegative comparison participants completed standardized neuromedical, psychiatric, and neurocognitive research evaluations, alongside a comprehensive assessment of RWF that included cognitive symptoms in daily life, basic and instrumental activities of daily living, clinician-rated global functioning, and employment. Results showed that AEH was associated with a significantly increased risk of dependence in RWF, which was particularly elevated among AEH persons with global neurocognitive impairment (NCI). Among those with AEH, NCI (i.e., deficits in learning and information processing speed), mood disorders (i.e., Bipolar Disorder), and substance dependence (e.g., methamphetamine dependence) were all independently predictive of RWF dependence. Findings suggest that neurocognitively impaired individuals with AEH are at notably elevated risk of clinically significant challenges in normal daily functioning. Screening for neurocognitive, mood, and substance use disorders in AEH may facilitate identification of individuals at high risk of functional dependence who may benefit from psychological and medical strategies to manage their neuropsychiatric conditions.
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Affiliation(s)
- Katie L Doyle
- Joint Doctoral Program in Clinical Psychology, San Diego State University and University of California, San Diego, CA, USA
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25
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Weber E, Blackstone K, Woods SP. Cognitive neurorehabilitation of HIV-associated neurocognitive disorders: a qualitative review and call to action. Neuropsychol Rev 2013; 23:81-98. [PMID: 23417497 PMCID: PMC3606924 DOI: 10.1007/s11065-013-9225-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Accepted: 01/27/2013] [Indexed: 12/13/2022]
Abstract
Despite significant advances in the virologic management of HIV infection over the last two decades, effective treatments for HIV-associated neurocognitive disorders (HAND) remain elusive. While pharmacological interventions have yielded some success in improving neurocognitive outcomes in HIV, there is a dearth of rigorous studies examining the efficacy of cognitive rehabilitation for remediating HIV-associated neurocognitive impairment. This qualitative review summarizes and critiques the emerging literature on cognitive and behavioral treatments for HAND, which provides many reasons for optimism, but also has major limitations that underscore the scope of the work that lies ahead. Considering the notable real-world consequences of HAND, the development, validation, and clinical deployment of cognitive neurorehabilitation interventions tailored to the needs of persons living with HIV infection is a priority for clinical neuroAIDS investigators. In describing potential future directions for this endeavor, particular attention was paid to the application of cognitive neuropsychological principles in developing theory-driven approaches to managing HAND, improving everyday functioning, and enhancing HIV health outcomes.
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Affiliation(s)
- Erica Weber
- Joint Doctoral Program in Clinical Psychology, San Diego State University and University of California, San Diego
- Department of Psychiatry, University of California, San Diego
| | - Kaitlin Blackstone
- Joint Doctoral Program in Clinical Psychology, San Diego State University and University of California, San Diego
- Department of Psychiatry, University of California, San Diego
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26
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Prevention, Rehabilitation, and Mitigation Strategies of Cognitive Deficits in Aging with HIV: Implications for Practice and Research. ISRN NURSING 2013; 2013:297173. [PMID: 23431469 PMCID: PMC3574749 DOI: 10.1155/2013/297173] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Accepted: 12/21/2012] [Indexed: 11/25/2022]
Abstract
Highly active antiretroviral therapy has given the chance to those living with HIV to keep on living, allowing them the opportunity to age and perhaps age successfully. Yet, there are severe challenges to successful aging with HIV, one of which is cognitive deficits. Nearly half of those with HIV experience cognitive deficits that can interfere with everyday functioning, medical decision making, and quality of life. Given that cognitive deficits develop with more frequency and intensity with increasing age, concerns mount that as people age with HIV, they may experience more severe cognitive deficits. These concerns become especially germane given that by 2015, 50% of those with HIV will be 50 and older, and this older cohort of adults is expected to grow. As such, this paper focuses on the etiologies of such cognitive deficits within the context of cognitive reserve and neuroplasticity. From this, evidence-based and hypothetical prevention (i.e., cognitive prescriptions), rehabilitation (i.e., speed of processing training), and mitigation (i.e., spaced retrieval method) strategies are reviewed. Implications for nursing practice and research are posited.
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27
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Foley JM, Gooding AL, Thames AD, Ettenhofer ML, Kim MS, Castellon SA, Marcotte TD, Sadek JR, Heaton RK, van Gorp WG, Hinkin CH. Visuospatial and Attentional Abilities Predict Driving Simulator Performance Among Older HIV-infected Adults. Am J Alzheimers Dis Other Demen 2013; 28:185-94. [PMID: 23314403 DOI: 10.1177/1533317512473192] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVES To examine the effects of aging and neuropsychological (NP) impairment on driving simulator performance within a human immunodeficiency virus (HIV)-infected cohort. METHODS Participants included 79 HIV-infected adults (n = 58 > age 50, n = 21 ≤ 40) who completed a NP battery and a personnel computer-based driving simulator task. Outcome variables included total completion time (time) and number of city blocks to complete the task (blocks). RESULTS Compared to the younger group, the older group was less efficient in their route finding (blocks over optimum: 25.9 [20.1] vs 14.4 [16.9]; P = .02) and took longer to complete the task (time: 1297.6 [577.6] vs 804.4 [458.5] seconds; P = .001). Regression models within the older adult group indicated that visuospatial abilities (blocks: b = -0.40, P <.001; time: b = -0.40, P = .001) and attention (blocks: b = -0.49, P = .001; time: b = -0.42, P = .006) independently predicted simulator performance. The NP-impaired group performed more poorly on both time and blocks, compared to the NP normal group. CONCLUSIONS Older HIV-infected adults may be at risk of driving-related functional compromise secondary to HIV-associated neurocognitive decline.
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Affiliation(s)
- J M Foley
- VA Boston Healthcare System, Boston, MA, USA.
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28
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Thames AD, Arentoft A, Rivera-Mindt M, Hinkin CH. Functional disability in medication management and driving among individuals with HIV: a 1-year follow-up study. J Clin Exp Neuropsychol 2012; 35:49-58. [PMID: 23237014 DOI: 10.1080/13803395.2012.747596] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Approximately 50% of individuals with HIV report cognitive deficits that can affect social or occupational functioning. The present study used a longitudinal design (1 year) to examine the relationship between cognitive factors and incidental functional deficits in medication management and driving ability among a cohort of 101 HIV+ participants. Participants were classified into groups of functionally "stable" and "disabled" for each laboratory-based functional task (i.e., Medication Management Task-Revised, MMT-R, and PC-based driving simulator). We hypothesized that participants who exhibited a functional deficit in either MMT-R or driving at follow-up assessment would demonstrate significantly poorer baseline cognitive performance at study entry than participants who remained functionally stable. As hypothesized, participants who demonstrated significantly lower baseline performance in learning/memory and executive functioning also demonstrated functional disability on the MMT-R at follow-up when compared to functionally stable participants. Poor baseline performance in speed of information processing was associated with a deficit in driving ability at follow-up assessment. Our results suggest that lower baseline cognitive functioning predicts downstream functional disability, and that deficits in learning/memory and information processing speed are particularly predictive of deficits in medication management and driving ability.
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Affiliation(s)
- April D Thames
- Department of Psychiatry and Biobehavioral Sciences, UCLA School of Medicine, Los Angeles, CA 90095, USA.
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29
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Neurocognitive deficits in patients with human immunodeficiency virus infection. HANDBOOK OF CLINICAL NEUROLOGY 2012. [PMID: 22608646 DOI: 10.1016/b978-0-444-52002-9.00035-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
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30
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Vance DE, Fazeli PL, Ross LA, Wadley VG, Ball KK. Speed of processing training with middle-age and older adults with HIV: a pilot study. J Assoc Nurses AIDS Care 2012; 23:500-10. [PMID: 22579081 DOI: 10.1016/j.jana.2012.01.005] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Accepted: 01/09/2012] [Indexed: 02/03/2023]
Abstract
Adults with HIV are at risk for deficits in speed of processing that can interfere with performing instrumental activities of daily living. In this pilot study, 46 middle-age and older adults with HIV were assigned to 10 hours of computerized speed of processing training (n = 22) or to a no-contact control condition (n = 24). ANCOVAs were used to examine treatment effects on a neurocognitive battery and the Timed Instrumental Activities of Daily Living (TIADL) Test. Treatment effects were detected on the Useful Field of View Test, F(1, 43) = 4.29, p = .04 and the TIADL Test, F(1, 43) = 5.02, p = .03; those in the experimental condition improved on these measures. Many of the participants also indicated that they felt the training improved their cognitive functioning. This study demonstrated that speed of processing training may improve cognitive and everyday functioning in this growing population.
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Affiliation(s)
- David E Vance
- School of Nursing and Associate Director, Center for Nursing Research, University of Alabama at Birmingham, AL, USA
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31
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Altered prefronto-striato-parietal network response to mental rotation in HIV. J Neurovirol 2012; 18:74-9. [PMID: 22271019 DOI: 10.1007/s13365-011-0072-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 12/08/2011] [Accepted: 12/12/2011] [Indexed: 10/14/2022]
Abstract
The present study used functional magnetic resonance imaging to examine the neural substrates of mental rotation in 11 individuals with HIV infection and 13 demographically similar HIV seronegative volunteers. Individuals with HIV showed increased brain response to mental rotation in prefrontal and posterior parietal cortices, striatum, and thalamus, with significant HIV by angle interactions emerging in the prefrontal cortex and caudate. Results indicate that HIV infection is associated with altered brain response to mental rotation in fronto-striato-parietal pathways, which may reflect compensatory strategies, recruitment of additional brain regions, and/or increased neuroenergetic demands during mental rotation needed to offset underlying HIV-associated neural injury.
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32
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Overton ET, Kauwe JSK, Paul R, Tashima K, Tate DF, Patel P, Carpenter CCJ, Patty D, Brooks JT, Clifford DB. Performances on the CogState and standard neuropsychological batteries among HIV patients without dementia. AIDS Behav 2011; 15:1902-9. [PMID: 21877204 PMCID: PMC3594991 DOI: 10.1007/s10461-011-0033-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
HIV-associated neurocognitive disorders remain prevalent but challenging to diagnose particularly among non-demented individuals. To determine whether a brief computerized battery correlates with formal neurocognitive testing, we identified 46 HIV-infected persons who had undergone both formal neurocognitive testing and a brief computerized battery. Simple detection tests correlated best with formal neuropsychological testing. By multivariable regression model, 53% of the variance in the composite Global Deficit Score was accounted for by elements from the brief computerized tool (P < 0.01). These data confirm previous correlation data with the computerized battery. Using the five significant parameters from the regression model in a Receiver Operating Characteristic curve, 90% of persons were accurately classified as being cognitively impaired or not. The test battery requires additional evaluation, specifically for identifying persons with mild impairment, a state upon which interventions may be effective.
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33
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Kallianpur KJ, Kirk GR, Sailasuta N, Valcour V, Shiramizu B, Nakamoto BK, Shikuma C. Regional cortical thinning associated with detectable levels of HIV DNA. Cereb Cortex 2011; 22:2065-75. [PMID: 22016479 DOI: 10.1093/cercor/bhr285] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
High levels of human immunodeficiency virus (HIV) DNA in peripheral blood mononuclear cells (PBMCs), and specifically within CD14+ blood monocytes, have been found in HIV-infected individuals with neurocognitive impairment and dementia. The failure of highly active antiretroviral therapy (HAART) to eliminate cognitive dysfunction in HIV may be secondary to persistence of HIV-infected PBMCs which cross the blood-brain barrier, leading to perivascular inflammation and neuronal injury. This study assessed brain cortical thickness relative to HIV DNA levels and identified, we believe for the first time, a neuroimaging correlate of detectable PBMC HIV DNA in subjects with undetectable HIV RNA. Cortical thickness was compared between age- and education-matched groups of older (>40 years) HIV-seropositive subjects on HAART who had detectable (N = 9) and undetectable (N = 10) PBMC HIV DNA. Statistical testing revealed highly significant (P < 0.001) cortical thinning associated with detectable HIV DNA. The largest regions affected were in bilateral insula, orbitofrontal and temporal cortices, right superior frontal cortex, and right caudal anterior cingulate. Cortical thinning correlated significantly with a measure of psychomotor speed. The areas of reduced cortical thickness are key nodes in cognitive and emotional processing networks and may be etiologically important in HIV-related neurological deficits.
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Affiliation(s)
- Kalpana J Kallianpur
- Hawaii Center for AIDS, Department of Medicine, University of Hawaii, Honolulu, 96816, USA.
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Relationship between retinal nerve fiber layer thickness and driving ability in patients with human immunodeficiency virus infection. Graefes Arch Clin Exp Ophthalmol 2011; 249:1643-7. [PMID: 21732109 DOI: 10.1007/s00417-011-1735-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2011] [Revised: 05/19/2011] [Accepted: 05/21/2011] [Indexed: 10/18/2022] Open
Abstract
BACKGROUND The aim of this work is to study the possible association between retinal nerve fiber layer (NFL) thickness and driving ability. METHODS Thirty-eight drivers including 22 HIV-positive (HIV+) and 16 age-matched HIV-negative controls participants underwent a full ophthalmologic evaluation, including assessment of retinal NFL thickness. In the undilated state with standard optical correction and under standard illumination they also completed a computer-based, wide field-of-view driving simulation in which they were to obey traffic laws, engage in crash avoidance, and pass slower automobiles. Crashes, speeding and traffic light tickets, and off-road excursions contributed to a weighted score of driving errors. RESULTS HIV-seropositive participants had a significantly higher weighted error score than control participants (18.4 [9.2] vs. 11.1 [4.5], p = 0.006). NFL thickness was significantly correlated with driving errors (r = -0.51, p = 0.025); there was a trend for participants with a CD4 nadir <100 to have more errors than those with a nadir >100 (29.7 [13.2] vs. 19.3 [8.4], p = 0.056). The highest number of driving errors occurred in individuals with both CD4 <100 and NFL thickness <80. CONCLUSIONS Driving ability may be impacted by reductions in retinal nerve fiber layer thickness. Physicians should consider the potential impact that more complex ophthalmologic conditions in HIV-infected patients may have on driving performance.
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35
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Thames AD, Becker BW, Marcotte TD, Hines LJ, Foley JM, Ramezani A, Singer EJ, Castellon SA, Heaton RK, Hinkin CH. Depression, cognition, and self-appraisal of functional abilities in HIV: an examination of subjective appraisal versus objective performance. Clin Neuropsychol 2011; 25:224-43. [PMID: 21331979 DOI: 10.1080/13854046.2010.539577] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Depression frequently co-occurs with HIV infection and can result in self-reported overestimates of cognitive deficits. Conversely, genuine cognitive dysfunction can lead to an under-appreciation of cognitive deficits. The degree to which depression and cognition influence self-report of capacity for instrumental activities of daily living (IADLs) requires further investigation. This study examined the effects of depression and cognitive deficits on self-appraisal of functional competence among 107 HIV-infected adults. As hypothesized, higher levels of depression were found among those who over-reported problems in medication management, driving, and cognition when compared to those who under-reported or provided accurate self-assessments. In contrast, genuine cognitive dysfunction was predictive of under-reporting of functional deficits. Together, these results suggest that over-reliance on self-reported functional status poses risk for error when diagnoses require documentation of both cognitive impairment and associated functional disability in everyday life.
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Affiliation(s)
- April D Thames
- Semel Institute for Neuroscience and Human Behavior, School of Medicine, University of California-Los Angeles, CA 90095, USA.
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36
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Smurzynski M, Wu K, Letendre S, Robertson K, Bosch RJ, Clifford DB, Evans S, Collier AC, Taylor M, Ellis R. Effects of central nervous system antiretroviral penetration on cognitive functioning in the ALLRT cohort. AIDS 2011; 25:357-65. [PMID: 21124201 PMCID: PMC3022370 DOI: 10.1097/qad.0b013e32834171f8] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Differences in antiretroviral distribution into the central nervous system (CNS) may impact neurocognitive status. We assessed the relationship between estimates of antiretroviral therapy penetration into the CNS, using a published ranking system, and neurocognitive status in HIV-positive participants with plasma HIV-1 RNA (vRNA) suppression. DESIGN Participants with at least 6 weeks ongoing antiretroviral drug use and vRNA less than 50 copies/ml (N = 2636; 83% male, median baseline CD4 T cells: 244 cells/μl) had at least one neuroscreen assessment [Trail Making Test, Part A and B; Wechsler Adult Intelligence Scale-Revised (WAIS-R) Digit Symbol] at 10 413 neurovisits. Neuroscreen test scores were demographically adjusted and converted to Z-scores (NPZ3: lower scores imply more impairment). Central nervous system penetration effectiveness (CPE) ranks of 0.0 (low), 0.5 (medium), or 1.0 (high) were assigned to antiretrovirals and summed per regimen, per neurovisit. METHODS Multivariate linear regression models using generalized estimating equations assessed NPZ3 scores with respect to antiretroviral regimen. Covariates were retained if P ≤ 0.1. RESULTS A final model demonstrated that better NPZ3 scores were associated with higher CPE among participants taking more than three antiretroviral drugs (+0.07 per one unit increase in CPE score; P = 0.004) but not among participants with three or less antiretroviral drugs in the regimen (+0.01; P = 0.5). Results were adjusted for demographics, injection drug use, hepatitis C virus serostatus, CD4 cell count (current and nadir), baseline vRNA, antiretroviral experience, and years since first antiretroviral drug use. CONCLUSION Use of antiretroviral drugs with better estimated CNS penetration may be associated with better neurocognitive functioning; some people may require more than three antiretroviral drugs to treat HIV in the CNS. Clinically this means antiretroviral regimens could be designed to optimize estimated CNS penetration without sacrificing virologic and immunologic benefits.
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Affiliation(s)
- Marlene Smurzynski
- Harvard School of Public Health, Department of Biostatistics, Boston, Massachusetts 02115, USA.
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37
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Moore DJ, Letendre SL, Morris S, Umlauf A, Deutsch R, Smith DM, Little S, Rooney A, Franklin DR, Gouaux B, Leblanc S, Rosario D, Fennema-Notestine C, Heaton RK, Ellis RJ, Atkinson JH, Grant I. Neurocognitive functioning in acute or early HIV infection. J Neurovirol 2010; 17:50-7. [PMID: 21165782 PMCID: PMC3032208 DOI: 10.1007/s13365-010-0009-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 11/04/2010] [Accepted: 11/08/2010] [Indexed: 11/19/2022]
Abstract
We examined neurocognitive functioning among persons with acute or early HIV infection (AEH) and hypothesized that the neurocognitive performance of AEH individuals would be intermediate between HIV seronegatives (HIV−) and those with chronic HIV infection. Comprehensive neurocognitive testing was accomplished with 39 AEH, 63 chronically HIV infected, and 38 HIV− participants. All AEH participants were HIV infected for less than 1 year. Average domain deficit scores were calculated in seven neurocognitive domains. HIV−, AEH, and chronically HIV infected groups were ranked from best (rank of 1) to worst (rank of 3) in each domain. All participants received detailed substance use, neuromedical, and psychiatric evaluations and HIV infected persons provided information on antiretroviral treatment and completed laboratory evaluations including plasma and CSF viral loads. A nonparametric test of ordered alternatives (Page test), and the appropriate nonparametric follow-up test, was used to evaluate level of neuropsychological (NP) functioning across and between groups. The median duration of infection for the AEH group was 16 weeks [interquartile range, IQR: 10.3–40.7] as compared to 4.9 years [2.8–11.1] in the chronic HIV group. A Page test using ranks of average scores in the seven neurocognitive domains showed a significant monotonic trend with the best neurocognitive functioning in the HIV− group (mean rank = 1.43), intermediate neurocognitive functioning in the AEH group (mean rank = 1.71), and the worst in the chronically HIV infected (mean rank = 2.86; L statistic = 94, p < 0.01); however, post-hoc testing comparing neurocognitive impairment of each group against each of the other groups showed that the chronically infected group was significantly different from both the HIV− and AEH groups on neurocognitive performance; the AEH group was statistically indistinguishable from the HIV− group. Regression models among HIV infected participants were unable to identify significant predictors of neurocognitive performance. Neurocognitive functioning was worst among persons with chronic HIV infection. Although a significant monotonic trend existed and patterns of the data suggest the AEH individuals may fall intermediate to HIV− and chronic participants, we were not able to statistically confirm this hypothesis.
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Affiliation(s)
- David J Moore
- Department of Psychiatry, University of California, San Diego (UCSD), San Diego, CA, USA.
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Heaton RK, Cysique LA, Jin H, Shi C, Yu X, Letendre S, Franklin DR, Ake C, Vigil O, Atkinson JH, Marcotte TD, Grant I, Wu Z. Neurobehavioral effects of human immunodeficiency virus infection among former plasma donors in rural China. J Neurovirol 2010; 14:536-49. [PMID: 18991068 DOI: 10.1080/13550280802378880] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The human immunodeficiency virus (HIV) epidemic in China has expanded rapidly in recent years, but little is known about the prevalence and features of HIV-associated neurocognitive disorders (HANDs) in this part of the world. We administered a comprehensive Western neuropsychological (NP) test battery to 203 HIV+ and 198 HIV- former plasma donors in the rural area of Anhui province. They found that 26% of the HIV- samples, and 46% of the HIV+ samples, were infected with hepatitis C virus (HCV), which can also have central nervous system (CNS) effects. To classify NP impairment, we developed demographically corrected test norms based upon individuals free of both infections (N=141). Using a global summary score, NP impairment was found in 34.2% of the HIV-monoinfected group and 39.7% of the coinfected group, as compared to 12.7% of the uninfected controls (P<.001). HIV+ participants with acquired immunodeficiency syndrome (AIDS) were more likely to be impaired (43%) than non-AIDS individuals (29%; P<.05). Lastly, when all infection groups were combined, participants with NP impairment reported more cognitive complaints (P<.01) and increased dependence in everyday functioning (P=.01). In sum, NP impairment in this large rural Chinese sample was associated with both HIV and HCV infections, and the impairment's prevalence, severity, and pattern were similar to those reported by Western studies. Clinical significance of NP impairment in this population is suggested by the participants' reports of reduced everyday functioning. These findings indicate that HAND is likely to be an important feature of HIV infection in developing countries, underscoring the need for international efforts to develop CNS-relevant treatments.
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Affiliation(s)
- Robert K Heaton
- HIV Neurobehavioral Research Center (HNRC), Department of Psychiatry, University of California at San Diego, San Diego, California 92093-0603, USA.
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A Review of Driving Simulator Parameters Relevant to the Operation Enduring Freedom/Operation Iraqi Freedom Veteran Population. Am J Phys Med Rehabil 2010; 89:336-44. [DOI: 10.1097/phm.0b013e3181d3eb5f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Functional consequences of HIV-associated neuropsychological impairment. Neuropsychol Rev 2009; 19:186-203. [PMID: 19472057 DOI: 10.1007/s11065-009-9095-0] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2009] [Accepted: 04/29/2009] [Indexed: 11/26/2022]
Abstract
This review focuses on the "real world" implications of infection with HIV/AIDS from a neuropsychological perspective. Relevant literature is reviewed which examines the relationships between HIV-associated neuropsychological impairment and employment, driving, medication adherence, mood, fatigue, and interpersonal functioning. Specifically, the relative contributions of medical, cognitive, psychosocial, and psychiatric issues on whether someone with HIV/AIDS will be able to return to work, adhere to a complicated medication regimen, or safely drive a vehicle will be discussed. Methodological issues that arise in the context of measuring medication adherence or driving capacity are also explored. Finally, the impact of HIV/AIDS on mood state, fatigue, and interpersonal relationships are addressed, with particular emphasis on how these variables interact with cognition and independent functioning. The purpose of this review is to integrate neuropsychological findings with their real world correlates of functional behavior in the HIV/AIDS population.
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Cognitive neuropsychology of HIV-associated neurocognitive disorders. Neuropsychol Rev 2009; 19:152-68. [PMID: 19462243 PMCID: PMC2690857 DOI: 10.1007/s11065-009-9102-5] [Citation(s) in RCA: 407] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2009] [Accepted: 05/07/2009] [Indexed: 12/01/2022]
Abstract
Advances in the treatment of the human immunodeficiency virus (HIV) have dramatically improved survival rates over the past 10 years, but HIV-associated neurocognitive disorders (HAND) remain highly prevalent and continue to represent a significant public health problem. This review provides an update on the nature, extent, and diagnosis of HAND. Particular emphasis is placed on critically evaluating research within the realm of cognitive neuropsychology that aims to elucidate the component processes of HAND across the domains of executive functions, motor skills, speeded information processing, episodic memory, attention/working memory, language, and visuoperception. In addition to clarifying the cognitive mechanisms of HAND (e.g., impaired cognitive control), the cognitive neuropsychology approach may enhance the ecological validity of neuroAIDS research and inform the development of much needed novel, targeted cognitive and behavioral therapies.
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Hardy DJ, Vance DE. The Neuropsychology of HIV/AIDS in Older Adults. Neuropsychol Rev 2009; 19:263-72. [DOI: 10.1007/s11065-009-9087-0] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2007] [Accepted: 02/04/2009] [Indexed: 01/01/2023]
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Foley J, Ettenhofer M, Wright M, Hinkin CH. Emerging issues in the neuropsychology of HIV infection. Curr HIV/AIDS Rep 2008; 5:204-11. [PMID: 18838060 PMCID: PMC3616484 DOI: 10.1007/s11904-008-0029-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Neurocognitive compromise, a common sequela of HIV infection, ranges in severity from minor motor and information-processing speed decrements to severely incapacitating symptoms that affect functional independence. However, with the emergence of highly active antiretroviral therapy (HAART), neurocognitive phenotypes have become highly heterogeneous and increasingly fail to resemble pre-HAART presentations. This article provides an overview of our current knowledge of HIV-associated neuropsychological abnormalities, with an emphasis on the most recent attempts to classify cognitive impairment within Western and developing societies, the emergence of diverse cognitive presentations in the post-HAART era, factors that moderate the development or impact of HIV-related neurocognitive and functional deficits, and the neurophysiologic consequences of infection.
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Affiliation(s)
- Jessica Foley
- David Geffen School of Medicine at UCLA, 760 Westwood Plaza, Room C8-747, Los Angeles, CA 90024, USA
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Okonkwo OC, Wadley VG, Ball K, Vance DE, Crowe M. Dissociations in visual attention deficits among persons with mild cognitive impairment. AGING NEUROPSYCHOLOGY AND COGNITION 2008; 15:492-505. [PMID: 18584341 DOI: 10.1080/13825580701844414] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Impairments in visual attention and visual information processing have been identified as part of the neuropsychological features of Alzheimer's disease (AD), even in its earliest stages. There is increasing recognition that these deficits may be selective rather than global, with some attentional subtypes being more vulnerable than others. The few studies that have investigated attentional deficits in mild cognitive impairment (MCI), a putatively prodromal phase of AD, have not satisfactorily addressed the possible selectivity in attentional deficits in MCI. This study examined potential dissociations in visual attention deficits in MCI using a measure that assesses simple, divided, and selective attention. The results indicated a hierarchy of attentional impairments, with divided attention being the most affected and simple attention the least. Among participants with MCI, 53% showed evidence of impairment in divided attention compared to 19% of controls (OR = 4.81, p < .001). Poorer visual attention was also associated with poorer overall cognitive status. The implications of these findings for early identification of MCI, prevention of functional decline in MCI, and delay/reversal of cognitive degradation in MCI are discussed.
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Affiliation(s)
- Ozioma C Okonkwo
- Department of Psychology, University of Alabama at Birmingham, AL 35294, USA.
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May S, Letendre S, Haubrich R, McCutchan JA, Heaton R, Capparelli E, Ellis R. Meeting practical challenges of a trial involving a multitude of treatment regimens: an example of a multi-center randomized controlled clinical trial in neuroAIDS. J Neuroimmune Pharmacol 2007; 2:97-104. [PMID: 18040832 DOI: 10.1007/s11481-006-9057-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2006] [Accepted: 12/05/2006] [Indexed: 11/26/2022]
Abstract
Many clinical trials compare one specific treatment to a control or standard treatment. In HIV therapeutics, such fixed-regimen designs may be problematic as individualized treatment regimens are standard practice. Designing and implementing a trial that allows individualized treatment options poses particular challenges. In this example of a clinical trial in NeuroAIDS, it is hypothesized that some antiretroviral drugs [i.e., those that penetrate the blood-brain barrier sufficiently to inhibit HIV in the central nervous system (CNS)] will improve HIV neurocognitive impairment, whereas non-penetrating antiretrovirals will not be as effective in improving neurocognitive function. To test this hypothesis, a uniquely designed strategy trial was developed that consists of three essential components: (1) a scoring system that ranks regimens for CNS penetration based on semiquantitative criteria, (2) committee-established individualized regimen options that allow randomization to opposite ends of the CNS penetration spectrum, and (3) timely implementation across multiple centers via web-based resources. For the proposed trial, the three components are combined with an adaptive randomization scheme to minimize potential confounding by several important factors. A small pilot study demonstrated the feasibility and acceptability to providers. In conclusion, an innovative design can provide solutions to challenging practical issues in trials with multiple treatment options.
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Affiliation(s)
- Susanne May
- Division of Biostatistics and Bioinformatics, Department of Family & Preventive Medicine, and Department of Neurosciences, University of California, San Diego, 9500 Gilman Drive-M/C 0717, La Jolla, CA 92093-0717, USA.
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