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https://www.readbyqxmd.com/read/29785584/interferon-free-therapy-in-hepatitis-c-virus-hcv-monoinfected-and-hcv-hiv-coinfected-patients-effect-on-cognitive-function-fatigue-and-mental-health
#1
Felix Kleefeld, Sophie Heller, Patrick Ingiliz, Heiko Jessen, Anders Petersen, Ute Kopp, Antje Kraft, Katrin Hahn
The efficacy and safety of interferon-free therapies for hepatitis C virus (HCV) infection have been reported. Considering the accumulating evidence for a direct central nervous system infection by HCV, we aim to evaluate the effect of direct acting antivirals (DAA) therapy on cognitive function in HCV patients. We conducted a longitudinal analysis of the cognitive performance of 22 patients (8 HCV+, 14 HCV+/HIV+) who completed neuropsychological testing at baseline and at week 12 after DAA therapy. In 20 patients, we analyzed specific attention parameters derived from an experimental testing based on the Theory of Visual Attention (TVA)...
May 21, 2018: Journal of Neurovirology
https://www.readbyqxmd.com/read/29785582/altered-cerebro-cerebellum-resting-state-functional-connectivity-in-hiv-infected-male-patients
#2
Huijuan Wang, Ruili Li, Yawen Zhou, Yanming Wang, Jin Cui, Benedictor Alexander Nguchu, Bensheng Qiu, Xiaoxiao Wang, Hongjun Li
In addition to the role of planning and executing movement, the cerebellum greatly contributes to cognitive process. Numerous studies have reported structural and functional abnormalities in the cerebellum for HIV-infected patients, but little is known about the altered functional connectivity of particular cerebellar subregions and the cerebrum. Therefore, this study aimed to explore the resting-state functional connectivity (rsFC) changes of the cerebellum and further analyze the relationship between the rsFC changes and the neuropsychological evaluation...
May 21, 2018: Journal of Neurovirology
https://www.readbyqxmd.com/read/29784645/harnessing-post-translational-modifications-for-next-generation-hiv-immunogens
#3
REVIEW
Joel D Allen, Rogier W Sanders, Katie J Doores, Max Crispin
The extensive post-translational modifications of the envelope spikes of the human immunodeficiency virus (HIV) present considerable challenges and opportunities for HIV vaccine design. These oligomeric glycoproteins typically have over 30 disulfide bonds and around a 100 N-linked glycosylation sites, and are functionally dependent on protease cleavage within the secretory system. The resulting mature structure adopts a compact fold with the vast majority of its surface obscured by a protective shield of glycans which can be targeted by broadly neutralizing antibodies (bnAbs)...
May 21, 2018: Biochemical Society Transactions
https://www.readbyqxmd.com/read/29782827/prevalence-and-risk-factors-of-mild-chronic-renal-failure-in-hiv-infected-patients-influence-of-female-gender-and-antiretroviral-therapy
#4
Marina Pontello Cristelli, Joan Carles Trullàs, Federico Cofán, Naira Rico, Christian Manzardo, Juan Ambrosioni, Josep Lluis Bedini, Asunción Moreno, Fritz Diekmann, Jose Maria Miro
BACKGROUND: In people living with HIV, much is known about chronic kidney disease, defined as a glomerular filtration rate under 60mL/min. However, there is scarce data about prevalence and risk factors for milder impairment (60-89mL/min). OBJECTIVE: The present study aims to assess the influence of sex, antiretroviral therapy, and classical risk factors on the occurrence of mild decreased renal function in a large Spanish cohort of HIV-infected patients. METHODS: Cross-sectional, single center study, including all adult HIV-1-infected patients under antiretroviral treatment with at least two serum creatinine measures during 2014, describing the occurrence of and the risk factors for mildly decreased renal function (eGFR by CKD-EPI creatinine equation of 60-89mL/min)...
May 18, 2018: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29782334/inhibitors-of-the-hiv-1-capsid-a-target-of-opportunity
#5
Stephanie K Carnes, Jonathan H Sheehan, Christopher Aiken
PURPOSE OF REVIEW: To summarize recent advances in the discovery of chemical inhibitors targeting the HIV capsid and research on their mechanisms of action. RECENT FINDINGS: HIV infection is critically dependent on functions of the viral capsid. Numerous studies have reported the identification of a variety of compounds that bind to the capsid protein; some of these inhibit reverse transcription and nuclear entry, steps required for infection. Other capsid-targeting compounds appear to act by perturbing capsid assembly, resulting in noninfectious progeny virions...
May 18, 2018: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/29781880/willingness-to-donate-organs-among-people-living-with-hiv
#6
Anh Q Nguyen, Saad K Anjum, Samantha E Halpern, Komal Kumar, Sarah E Van Pilsum Rasmussen, Brianna Doby, Ashton A Shaffer, Allan B Massie, Aaron A R Tobian, Dorry L Segev, Jeremy Sugarman, Christine M Durand
BACKGROUND: With passage of the HIV Organ Policy Equity (HOPE) Act, people living with HIV (PLWH) can donate organs to PLWH awaiting transplant. Understanding knowledge and attitudes regarding organ donation among PLWH in the US is critical to implementing the HOPE Act. METHODS: PLWH were surveyed regarding their knowledge, attitudes, and beliefs about organ donation and transplantation at an urban academic HIV clinic in Baltimore, MD between 08/2016-10/2016. Responses were compared using Fisher's exact and chi-squared tests...
May 16, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29781879/cognitive-burden-of-common-non-antiretroviral-medications-in-hiv-infected-women
#7
Leah H Rubin, Kendra K Radtke, Seenae Eum, Bani Tamraz, Krithika N Kumanan, Gayle Springer, Pauline M Maki, Kathryn Anastos, Daniel Merenstein, Roksana Karim, Kathleen M Weber, Deborah Gustafson, Ruth M Greenblatt, Jeffrey R Bishop
OBJECTIVE: The aging HIV population has increased comorbidity burden and consequently non-antiretroviral (ARV) medication utilization. Many non-ARV medications have known neurocognitive-adverse effects ("NC-AE medications"). We assessed the cognitive effects of NC-AE medications in HIV+ and HIV- women. METHODS: 1558 participants (1037 HIV+; mean age 46) from the Women's Interagency HIV Study completed a neuropsychological test battery between 2009 and 2011...
May 16, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29778137/deciphering-natural-control-of-hiv-1-a-valuable-strategy-to-achieve-antiretroviral-therapy-termination
#8
REVIEW
Hamza Loucif, Steven Gouard, Xavier Dagenais-Lussier, Armstrong Murira, Simona Stäger, Cécile Tremblay, Julien Van Grevenynghe
Antiretroviral therapy (ART) has dramatically reduced HIV-1-associated morbidity and mortality, and has transformed HIV-1 infection into a manageable chronic condition by suppressing viral replication. However, despite recent patient care improvements, ART still fails to cure HIV-1 infection due to the inability to counteract immune defects and metabolic disturbances that are associated with residual inflammation alongside viral persistence. Life-long drug administration also results in multiple side-effects in patients including lipodystrophy and insulin resistance...
April 2018: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/29778008/plasma-metabolic-changes-in-chinese-hiv-infected-patients-receiving-lopinavir-ritonavir-based-treatment-implications-for-hiv-precision-therapy
#9
Xiaolin Li, Tong Wu, Yongjun Jiang, Zining Zhang, Xiaoxu Han, Wenqing Geng, Haibo Ding, Jing Kang, Qi Wang, Hong Shang
OBJECTIVES: The goal of this study is to profile the metabolic changes in the plasma of HIV patients receiving lopinavir/ritonavir (LPV/r)-based highly active antiretroviral therapy (HAART) relative to their treatment-naïve phase, aimed to identify precision therapy for HIV for improving prognosis and predicting dyslipidemia caused by LPV/r. METHODS: 38 longitudinal plasma samples were collected from 19 HIV-infected patients both before and after antiretroviral therapy, and 18 samples from healthy individuals were used as controls...
May 16, 2018: Cytokine
https://www.readbyqxmd.com/read/29777875/switching-cell-penetrating-and-cxcr4-binding-activities-of-nanoscale-organized-arginine-rich-peptides
#10
Marianna Teixeira de Pinho Favaro, Naroa Serna, Laura Sánchez-García, Rafael Cubarsi, Mónica Roldán, Alejandro Sánchez-Chardi, Ugutz Unzueta, Ramón Mangues, Neus Ferrer-Miralles, Adriano Rodrigues Azzoni, Esther Vázquez, Antonio Villaverde
Arginine-rich protein motifs have been described as potent cell-penetrating peptides (CPPs) but also as rather specific ligands of the cell surface chemokine receptor CXCR4, involved in the infection by the human immunodeficiency virus (HIV). Polyarginines are commonly used to functionalize nanoscale vehicles for gene therapy and drug delivery, aimed to enhance cell penetrability of the therapeutic cargo. However, under which conditions these peptides do act as either unspecific or specific ligands is unknown...
May 16, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29777500/methamphetamine-associated-dysregulation-of-the-hypothalamic-pituitary-thyroid-axis
#11
Deborah L Jones, Adam W Carrico, Suat Babayigit, Violeta J Rodriguez, Carlos Aguila, Mahendra Kumar
Methamphetamine and HIV impair thyroid function, but few studies have investigated their combined effects on thyroid dysregulation. This study examined the associations of methamphetamine use alone and in combination with HIV on thyroid function among men in South Florida. Measures of thyroid function in methamphetamine-using, HIV-infected (METH+HIV+; n = 127) and HIV-negative (METH+HIV-; n = 46) men who have sex with men (MSM) were compared to non-methamphetamine-using, HIV-negative men (METH-HIV-; n = 136)...
May 17, 2018: Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/29777462/a-composite-of-multisystem-injury-and-neurocognitive-impairment-in-hiv-infection-association-with-everyday-functioning
#12
María J Marquine, Ilse Flores, Rujvi Kamat, Neco Johnson, Anya Umlauf, Scott Letendre, Dilip Jeste, Igor Grant, David Moore, Robert K Heaton
The Veterans Aging Cohort Study (VACS) Index is a composite marker of multisystem injury among HIV-infected persons. We aimed to examine its cross-sectional association with functional outcomes, after considering neurocognitive impairment (NCI) and other well-established correlates of everyday functioning among HIV-infected persons. Participants included 670 HIV-infected adults (ages 18-76; 88% male; 63% non-Hispanic White; median current CD4 = 404 cells/mm3 ; 67% on antiretroviral therapy; AIDS = 63%) enrolled in observational studies at the University of California San Diego HIV Neurobehavioral Research Program...
May 17, 2018: Journal of Neurovirology
https://www.readbyqxmd.com/read/29777461/hiv-aids-and-an-overweight-body-mass-are-associated-with-excessive-intra-individual-variability-in-response-preparation
#13
Lance O Bauer
Factors other than HIV/AIDS may influence the cognitive function of patients living with this disease. The present study tested the influence of a common comorbid problem-an overweight body mass. It also examined intra-task variabilities in performance and brain activation as potentially more sensitive indicators of dysfunction than their mean levels. One-hundred seventy-eight participants were recruited and categorized by HIV-1 serostatus (-/+) and body mass (BMI < 26/≥ 26 kg/m2 ). They performed a simple time estimation task during which response time accuracy and electroencephalographic readiness potentials were recorded...
May 17, 2018: Journal of Neurovirology
https://www.readbyqxmd.com/read/29777165/hiv-1-proteins-dysregulate-motivational-processes-and-dopamine-circuitry
#14
Sarah J Bertrand, Charles F Mactutus, Steven B Harrod, Landhing M Moran, Rosemarie M Booze
Motivational alterations, such as apathy, in HIV-1+ individuals are associated with decreased performance on tasks involving frontal-subcortical circuitry. We used the HIV-1 transgenic (Tg) rat to assess effect of long-term HIV-1 protein exposure on motivated behavior using sucrose (1-30%, w/v) and cocaine (0.01-1.0 mg/kg/infusion) maintained responding with fixed-ratio (FR) and progressive-ratio (PR) schedules of reinforcement. For sucrose-reinforced responding, HIV-1 Tg rats displayed no change in EC50 relative to controls, suggesting no change in sucrose reinforcement but had a downward shifted concentration-response curves, suggesting a decrease in response vigor...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773895/crispr-cas9-system-targeting-regulatory-genes-of-hiv-1-inhibits-viral-replication-in-infected-t-cell-cultures
#15
Youdiil Ophinni, Mari Inoue, Tomohiro Kotaki, Masanori Kameoka
The CRISPR/Cas9 system provides a novel and promising tool for editing the HIV-1 proviral genome. We designed RNA-guided CRISPR/Cas9 targeting the HIV-1 regulatory genes tat and rev with guide RNAs (gRNA) selected from each gene based on CRISPR specificity and sequence conservation across six major HIV-1 subtypes. Each gRNA was cloned into lentiCRISPRv2 before co-transfection to create a lentiviral vector and transduction into target cells. CRISPR/Cas9 transduction into 293 T and HeLa cells stably expressing Tat and Rev proteins successfully abolished the expression of each protein relative to that in non-transduced and gRNA-absent vector-transduced cells...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773527/acceptability-and-feasibility-of-real-time-antiretroviral-therapy-adherence-interventions-in-rural-uganda-mixed-method-pilot-randomized-controlled-trial
#16
Angella Musiimenta, Esther C Atukunda, Wilson Tumuhimbise, Emily E Pisarski, Melanie Tam, Monique A Wyatt, Norma C Ware, Jessica E Haberer
BACKGROUND: Wireless electronic adherence monitors can detect antiretroviral therapy (ART) adherence lapses and trigger interventions in real time, thus potentially avoiding unnecessary HIV viremia. Evidence about the acceptability and feasibility of these monitors and associated interventions, however, is limited. OBJECTIVE: The aim of this study was to assess the acceptability and feasibility of real-time adherence monitoring linked to text messaging (short message service, SMS) reminders and notifications to support adherence among individuals living with HIV who are taking ART in rural southwestern Uganda...
May 17, 2018: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/29773224/early-env-specific-ctls-effectively-suppress-viral-replication-in-shiv-controller-macaques
#17
Jin Fan, Hua Liang, Tao Shen, Shuo Wang, Xiaolin Ji, Cassian Yee, Fengmin Lu, Yiming Shao
Early immunological events in acute HIV infection are thought to fundamentally influence long-term disease outcomes. Though the contribution of Gag-specific CD8 T cell responses to early viral control is well established, little is known about the role of Env-specific CD8 T cell responses in controlling viral replication during acute infection. In a macaque simian-human immunodeficiency virus (SHIV) model, some macaques who were able to control SHIV replication after ART interruption showed expansion of Env-specific CD8 T cell responses during acute infection, compared to macaques who progressed to viral rebound...
May 5, 2018: Cellular Immunology
https://www.readbyqxmd.com/read/29772781/the-potential-role-of-fc-receptor-functions-in-the-development-of-a-universal-influenza-vaccine
#18
Sinthujan Jegaskanda
Despite global vaccination efforts, influenza virus continues to cause yearly epidemics and periodic pandemics throughout most of the world. Many of us consider the generation of broader, potent and long-lasting immunity against influenza viruses as critical in curtailing the global health and economic impact that influenza currently plays. To date, classical vaccinology has relied on the generation of neutralizing antibodies as the benchmark to measure vaccine effectiveness. However, recent developments in numerous related fields of biomedical research including, HIV, HSV and DENV have emphasized the importance of Fc-mediate effector functions in pathogenesis and immunity...
May 17, 2018: Vaccines
https://www.readbyqxmd.com/read/29772651/properties-and-functions-of-feline-immunodeficiency-virus-gag-domains-in-virion-assembly-and-budding
#19
REVIEW
Silvia A González, José L Affranchino
Feline immunodeficiency virus (FIV) is an important cat pathogen worldwide whose biological and pathophysiological properties resemble those of human immunodeficiency virus type 1 (HIV-1). Therefore, the study of FIV not only benefits its natural host but is also useful for the development of antiviral strategies directed against HIV-1 infections in humans. FIV assembly results from the multimerization of a single but complex viral polypeptide, the Gag precursor. In this review, we will first give an overview of the current knowledge of the proteins encoded by the FIV pol , env , rev , vif, and orf-A genes, and then we will describe and discuss in detail the critical roles that each of the FIV Gag domains plays in virion morphogenesis...
May 16, 2018: Viruses
https://www.readbyqxmd.com/read/29772601/hollow-mesoporous-structured-molecularly-imprinted-polymer-as-adsorbent-in-pipette-tip-solid-phase-extraction-for-the-determination-of-antiretrovirals-from-plasma-of-hiv-infected-patients
#20
Nathália Soares Simões, Hanna Leijoto de Oliveira, Ricky Cássio Santos da Silva, Leila Suleimara Teixeira, Thaís Lorenna Souza Sales, Whocely Victor de Castro, Maria José Nunes de Paiva, Cristina Sanches, Keyller Bastos Borges
In this work a hollow mesoporous structured molecularly imprinted polymer was synthetized and used as adsorbent in pipette-tip solid-phase extraction for the determination of lamivudine (3TC), zidovudine (AZT) and efavirenz (EFZ) from plasma of human immunodeficiency virus (HIV) infected patients by high-performance liquid chromatography (HPLC). All parameters that influence the recovery of the pipette tip based on hollow mesoporous molecularly imprinted polymer solid-phase extraction (PT-HM-MIP-SPE) method were systematically studied and discussed in detail...
May 17, 2018: Electrophoresis
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