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HIV viral load

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https://www.readbyqxmd.com/read/27909828/the-dopamine-related-polymorphisms-bdnf-comt-drd2-drd3-and-drd4-are-not-linked-with-changes-in-csf-dopamine-levels-and-frequency-of-hiv-infection
#1
Anne Horn, C Scheller, S du Plessis, R Burger, G Arendt, J Joska, S Sopper, C M Maschke, M Obermann, I W Husstedt, J Hain, P Riederer, E Koutsilieri
We showed previously that higher levels in CSF dopamine in HIV patients are associated with the presence of the dopamine transporter (DAT) 10/10-repeat allele which was also detected more frequently in HIV-infected individuals compared to uninfected subjects. In the current study, we investigated further whether other genetic dopamine (DA)-related polymorphisms may be related with changes in CSF DA levels and frequency of HIV infection in HIV-infected subjects. Specifically, we studied genetic polymorphisms of brain-derived neurotrophic factor, catechol-O-methyltransferase, and dopamine receptors DRD2, DRD3, and DRD4 genetic polymorphisms in uninfected and HIV-infected people in two different ethnical groups, a German cohort (Caucasian, 72 individuals with HIV infection and 22 individuals without HIV infection) and a South African cohort (Xhosan, 54 individuals with HIV infection and 19 individuals without HIV infection)...
December 1, 2016: Journal of Neural Transmission
https://www.readbyqxmd.com/read/27907136/immune-activation-and-bacterial-translocation-a-link-between-impaired-immune-recovery-and-frequent-visceral-leishmaniasis-relapses-in-hiv-infected-patients
#2
Maria Luciana Silva-Freitas, Glaucia Fernandes Cota, Talia S Machado-de-Assis, Carmem Giacoia-Gripp, Ana Rabello, Alda M Da-Cruz, Joanna R Santos-Oliveira
The maintenance of chronic immune activation due to leishmaniasis or even due to microbial translocation is associated with immunosenescence and may contribute to frequent relapses. Our aim was to investigate whether patients with HIV-associated visceral leishmaniasis (VL/HIV) who experience a single episode of VL have different immunological behaviors in comparison to those who experience frequent relapses. VL/HIV patients were allocated to non-relapsing (NR, n = 6) and relapsing (R, n = 11) groups and were followed from the active phase of VL up to 12 months post-treatment (mpt)...
2016: PloS One
https://www.readbyqxmd.com/read/27907114/rates-and-predictors-of-non-adherence-to-antiretroviral-therapy-among-hiv-positive-individuals-in-kenya-results-from-the-second-kenya-aids-indicator-survey-2012
#3
Irene N Mukui, Lucy Ng'ang'a, John Williamson, Joyce N Wamicwe, Shobha Vakil, Abraham Katana, Andrea A Kim
INTRODUCTION: Understanding the levels and associated factors of non-adherence to antiretroviral therapy (ART) is crucial in designing interventions to improve adherence and health outcomes of ART. We assessed non-adherence to ART among HIV-infected persons reporting ART use in a nationally representative survey in Kenya. METHODS: The Kenya AIDS Indicator Survey 2012 was a population-based, household survey of persons aged 18 months-64 years conducted in 2012-2013...
2016: PloS One
https://www.readbyqxmd.com/read/27907076/clinical-determinants-of-hiv-1b-between-host-evolution-and-their-association-with-drug-resistance-in-pediatric-patients
#4
Israel Pagán, Patricia Rojas, José Tomás Ramos, África Holguín
Understanding the factors that modulate the evolution of virus populations is essential to design efficient control strategies. Mathematical models predict that factors affecting viral within-host evolution may also determine that at the between-host level. Although HIV-1 within-host evolution has been associated with clinical factors used to monitor AIDS progression, such as patient age, CD4 cells count, viral load, and antiretroviral experience, little is known about the role of these clinical factors in determining between-host HIV-1 evolution...
2016: PloS One
https://www.readbyqxmd.com/read/27906995/assessment-of-the-world-health-organization-s-hiv-drug-resistance-early-warning-indicators-in-main-and-decentralized-outreach-antiretroviral-therapy-sites-in-namibia
#5
Nicholus Mutenda, Alexandra Bukowski, Anne-Marie Nitschke, Tuli Nakanyala, Ndapewa Hamunime, Tadesse Mekonen, Francina Tjituka, Greatjoy Mazibuko, Samson Mwinga, David Mabirizi, Evans Sagwa, Rosalia Indongo, Natalie Dean, Michael R Jordan, Steven Y Hong
BACKGROUND: The World Health Organization (WHO) early warning indicators (EWIs) of HIV drug resistance (HIVDR) assess factors at individual ART sites that are known to create situations favourable to the emergence of HIVDR. METHODS: In 2014, the Namibia HIV care and treatment program abstracted the following adult and pediatric EWIs from all public ART sites (50 main sites and 143 outreach sites): On-time pill pick-up, Retention in care, Pharmacy stock-outs, Dispensing practices, and Viral load suppression...
2016: PloS One
https://www.readbyqxmd.com/read/27906910/progress-with-scale-up-of-hiv-viral-load-monitoring-seven-sub-saharan-african-countries-january-2015-june-2016
#6
Shirley Lecher, Jason Williams, Peter N Fonjungo, Andrea A Kim, Dennis Ellenberger, Guoqing Zhang, Christiane Adje Toure, Simon Agolory, Georgette Appiah-Pippim, Suzanne Beard, Marie Yolande Borget, Sergio Carmona, Geoffrey Chipungu, Karidia Diallo, Marie Downer, Dianna Edgil, Holly Haberman, Mackenzie Hurlston, Steven Jadzak, Charles Kiyaga, William MacLeod, Boniface Makumb, Hellen Muttai, Christina Mwangi, Jane W Mwangi, Michael Mwasekaga, Mary Naluguza, Lucy W Ng'Ang'A, Shon Nguyen, Souleymane Sawadogo, Katrina Sleeman, Wendy Stevens, Joel Kuritsky, Shannon Hader, John Nkengasong
The World Health Organization (WHO) recommends viral load testing as the preferred method for monitoring the clinical response of patients with human immunodeficiency virus (HIV) infection to antiretroviral therapy (ART) (1). Viral load monitoring of patients on ART helps ensure early diagnosis and confirmation of ART failure and enables clinicians to take an appropriate course of action for patient management. When viral suppression is achieved and maintained, HIV transmission is substantially decreased, as is HIV-associated morbidity and mortality (2)...
December 2, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27906026/plasma-hiv-1-rna-viral-load-rebound-among-people-who-inject-drugs-receiving-antiretroviral-therapy-art-in-a-canadian-setting-an-ethno-epidemiological-study
#7
Will Small, M J Milloy, Ryan McNeil, Lisa Maher, Thomas Kerr
BACKGROUND: People who inject drugs (PWID) living with HIV often experience sub-optimal antiretroviral therapy (ART) treatment outcomes, including HIV plasma viral load (PVL) rebound. While previous studies have identified risk factors for PVL rebound among PWID, no study has examined the perspectives of PWID who have experienced PVL rebound episodes. We conducted an ethno-epidemiological study to investigate the circumstances surrounding the emergence of rebound episodes among PWID in Vancouver, BC, Canada...
July 25, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905999/factors-associated-with-hiv-viral-load-blips-and-the-relationship-between-self-reported-adherence-and-efavirenz-blood-levels-on-blip-occurrence-a-case-control-study
#8
Aaron Farmer, Xun Wang, Anuradha Ganesan, Robert G Deiss, Brian K Agan, Thomas A O'Bryan, Kevin Akers, Jason F Okulicz
BACKGROUND: The uncertain etiology of HIV viral load (VL) blips may lead to increased use of clinical resources. We evaluated the association of self-reported adherence (SRA) and antiretroviral (ART) drug levels on blip occurrence in US Military HIV Natural History Study (NHS) participants who initiated the single-tablet regimen efavirenz/emtricitabine/tenofovir disoproxil fumarate (EFV/FTC/TDF). METHODS: ART-naïve NHS participants started on EFV/FTC/TDF between 2006 and 2013 who achieved VL suppression (<50 copies/mL) within 12 months and had available SRA and stored plasma samples were included...
March 22, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905841/cell-delivered-entry-inhibitors-for-hiv-1-ccr5-downregulation-and-blocking-virus-membrane-fusion-in-defending-the-host-cell-population
#9
Geoff Symonds, Jeffrey S Bartlett, Hans-Peter Kiem, Marlene Tsie, Louis Breton
HIV-1 infection requires the presence of the CD4 receptor on the target cell surface and a coreceptor, predominantly CC-chemokine receptor 5 (CCR5). It has been shown that individuals who are homozygous for a defective CCR5 gene are protected from HIV-1 infection. A novel self-inactivating lentiviral vector LVsh5/C46 (Cal-1) has been engineered to block HIV-1 infection with two viral entry inhibitors, conferring resistance to HIV-1 infection from both CCR5 and CXCR4 tropic strains. Cal-1 encodes a short hairpin RNA (sh5) to downregulate CCR5 and C46, an HIV-1 fusion inhibitor...
December 2016: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/27903948/characterizing-patients-with-very-low-level-hiv-viremia-a-community-based-study
#10
Elie Helou, Sheela Shenoi, Tassos Kyriakides, Marie-Louise Landry, Michael Kozal, Lydia Aoun Barakat
OBJECTIVE: Very-low-level viremia (VLLV) is a relatively new concept in the realm of human immunodeficiency virus (HIV) care. Newer generation assays are now able to detect plasma HIV RNA Viral Load (VL) levels as low as 20 copies/mL. The authors characterized patients with VLLV (VL between 20 and 50 copies/mL) in order to identify possible risk factors associated with virologic failure and poor clinical outcomes. METHODS: The authors reviewed 119 consecutive charts of patients with VLLV...
November 30, 2016: Journal of the International Association of Providers of AIDS Care
https://www.readbyqxmd.com/read/27903799/cxcr6-mediated-sivagmsab-entry-into-sabaeus-african-green-monkey-lymphocytes-implicates-widespread-use-of-non-ccr5-pathways-in-natural-host-infections
#11
Katherine S Wetzel, Yanjie Yi, Sarah T C Elliott, Dino Romero, Beatrice Jacquelin, Beatrice H Hahn, Michaela Muller-Trutwin, Cristian Apetrei, Ivona Pandrea, Ronald G Collman
: African green monkeys (AGM) and sooty mangabeys (SM) are well-studied natural hosts of SIV, which do not progress to AIDS when infected with their species-specific viruses. SIV natural hosts express very low levels of the canonical entry coreceptor CCR5, and recent studies have shown that CCR5 is dispensable for SIV infection of SM in vivo, and blocking CCR5 does not prevent ex vivo infection of PBMC from SM or vervet AGM. In both hosts, CXCR6 is an efficient entry pathway in vitro...
November 30, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27903797/accumulation-of-pol-mutations-selected-by-hla-b-52-01-c-12-02-protective-haplotype-restricted-ctls-causes-low-plasma-viral-load-due-to-low-viral-fitness-of-mutant-viruses
#12
Hayato Murakoshi, Madoka Koyanagi, Takayuki Chikata, Mohammad Arif Rahman, Nozomi Kuse, Keiko Sakai, Hiroyuki Gatanaga, Shinichi Oka, Masafumi Takiguchi
: HLA-B*52:01-C*12:02, which is the most abundant haplotype in Japan, has a protective effect on disease progression in HIV-1-infected Japanese individuals, whereas HLA-B*57 and -B*27 protective alleles are very rare in Japan. A previous study on HLA-associated polymorphisms demonstrated that the number of HLA-B*52:01-associated mutations at four Pol positions was inversely correlated with plasma viral load (pVL) in HLA-B*52:01-negative individuals, suggesting that the transmission of HIV-1 with these mutations could modulate the pVL in the population...
November 30, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27903274/breadth-and-magnitude-of-antigen-specific-antibody-responses-in-the-control-of-plasma-viremia-in-simian-immunodeficiency-virus-infected-macaques
#13
Bapi Pahar, Carys S Kenway-Lynch, Preston Marx, Sudesh K Srivastav, Celia LaBranche, David C Montefiori, Arpita Das
BACKGROUND: Increasing evidence suggests an unexpected potential for non-neutralizing antibodies to prevent HIV infection. Consequently, identification of functional linear B-cell epitopes for HIV are important for developing preventative and therapeutic strategies. We therefore explored the role of antigen-specific immune responses in controlling plasma viremia in SIV infected rhesus macaques. METHODS: Thirteen rhesus macaques were inoculated either intravaginally or intrarectally with SIVMAC251...
December 1, 2016: Virology Journal
https://www.readbyqxmd.com/read/27902602/sensitivity-and-specificity-of-dried-blood-spots-for-hiv-1-viral-load-quantification-a-laboratory-assessment-of-3-commercial-assays
#14
Pieter Pannus, Maarten Claus, Maria Mercedes Perez Gonzalez, Nathan Ford, Katrien Fransen
The use of dried blood spots (DBS) instead of plasma as a specimen type for HIV-1 viral load (VL) testing facilitates the decentralization of specimen collection and can increase access to VL testing in resource-limited settings. The performance of DBS for VL testing is lower, however, when compared to the gold standard sample type plasma. In this diagnostic accuracy study, we evaluated 3 VL assays with DBS.Participants were recruited between August 2012 and April 2015. Both plasma and DBS specimens were prepared and tested for HIV-1 VL with the Roche CAP/CTM HIV-1 test v2...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27902330/simian-immunodeficiency-virus-sivmac239-infection-and-simian-human-immunodeficiency-virus-shiv89-6p-infection-result-in-progression-to-aids-in-cynomolgus-macaques-from-asian-country-origin
#15
Tomotaka Okamura, Yusuke Tsujimura, Shogo Soma, Ichiro Takahashi, Kazuhiro Matsuo, Yasuhiro Yasutomi
Simian immunodeficiency virus (SIV) infection models in cynomolgus macaques are important for analysis of the pathogenesis of immunodeficiency virus and for studies on the efficacy of new vaccine candidates. However, very little is known about the pathogenesis of SIV or simian human immunodeficiency virus (SHIV) in cynomolgus macaques from different Asian country origins. In the present study, we analyzed the infectivity and pathogenicity of CCR5-tropic SIVmac and those of dual-tropic SHIV89.6P inoculated in cynomolgus macaques of Indonesia, Malaysia or Philippines origin...
October 21, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27898591/tenofovir-exposure-in-utero-and-linear-growth-in-hiv-exposed-uninfected-infants
#16
Stanzi M le Roux, Jennifer Jao, Kirsty Brittain, Tamsin K Phillips, Seun Olatunbosun, Agnes Ronan, Allison Zerbe, Elaine J Abrams, Landon Myer
OBJECTIVE: Tenofovir (TDF) affects bone health and is widely used in pregnancy but data are limited on the effects of TDF exposure in utero. We examined the association between duration of in-utero TDF exposure and linear growth in HIV-exposed, uninfected (HEU) infants. DESIGN: A prospective cohort of pregnant women initiating TDF-containing regimens at primary care services in Cape Town, South Africa, were enrolled and followed with their breastfeeding infants through 12 months postpartum...
January 2, 2017: AIDS
https://www.readbyqxmd.com/read/27898590/reactivation-of-simian-immunodeficiency-virus-reservoirs-in-the-brain-of-virally-suppressed-macaques
#17
Lucio Gama, Celina M Abreu, Erin N Shirk, Sarah L Price, Ming Li, Greg M Laird, Kelly A Metcalf Pate, Stephen W Wietgrefe, Shelby L O'Connor, Luiz Pianowski, Ashley T Haase, Carine Van Lint, Robert F Siliciano, Janice E Clements
OBJECTIVE: Resting CD4 T cells have been recognized as the major cell reservoir of latent HIV-1 during antiretroviral therapy (ART). Using an simian immunodeficiency virus (SIV)/macaque model for AIDS and HIV-related neurocognitive disorders we assessed the contribution of the brain to viral latency and reactivation. DESIGN: Pigtailed macaques were dual inoculated with SIVDeltaB670 and SIV17E-Fr and treated with an efficacious central nervous system-penetrant ART...
January 2, 2017: AIDS
https://www.readbyqxmd.com/read/27898566/antiretroviral-therapy-initiation-is-not-associated-with-risky-sexual-behavior-among-heterosexual-human-immunodeficiency-virus-infected-persons-in-serodiscordant-partnerships
#18
Andrew Mujugira, Connie Celum, Kenneth Ngure, Katherine K Thomas, Elly Katabira, Jared M Baeten
BACKGROUND: Few prospective studies have assessed whether antiretroviral therapy (ART) use is associated with changes in sexual risk behavior of human immunodeficiency virus (HIV)-infected persons in known HIV-serodiscordant partnerships. METHODS: We conducted a longitudinal analysis of HIV-infected persons with known uninfected partners enrolled in the Partners Pre-Exposure Prophylaxis Study in Kenya and Uganda. Antiretroviral therapy use and self-reported sexual behavior were ascertained every 3 months...
November 28, 2016: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/27898045/dendritic-cell-based-immunotherapies-to-fight-hiv-how-far-from-a-success-story-a-systematic-review-and-meta-analysis
#19
REVIEW
Antonio Victor Campos Coelho, Ronald Rodrigues de Moura, Anselmo Jiro Kamada, Ronaldo Celerino da Silva, Rafael Lima Guimarães, Lucas André Cavalcanti Brandão, Luiz Cláudio Arraes de Alencar, Sergio Crovella
The scientific community still faces the challenge of developing strategies to cure HIV-1. One of these pursued strategies is the development of immunotherapeutic vaccines based on dendritic cells (DCs), pulsed with the virus, that aim to boost HIV-1 specific immune response. We aimed to review DCs-based therapeutic vaccines reports and critically assess evidence to gain insights for the improvement of these strategies. We performed a systematic review, followed by meta-analysis and meta-regression, of clinical trial reports...
November 26, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27897226/viral-and-host-characteristics-of-recent-and-established-hiv-1-infections-in-kisumu-based-on-a-multiassay-approach
#20
Newton Otecko, Seth Inzaule, Collins Odhiambo, George Otieno, Valarie Opollo, Alex Morwabe, Kennedy Were, Kenneth Ndiege, Fredrick Otieno, Andrea A Kim, Clement Zeh
Integrated approaches provide better understanding of HIV/AIDS epidemics. We optimised a multiassay algorithm (MAA) and assessed HIV incidence, correlates of recent infections, viral diversity, plus transmission clusters among participants screened for Kisumu Incidence Cohort Study (KICoS1) (2007-2009). We performed BED-CEIA, Limiting antigen (LAg) avidity, Biorad avidity, and viral load (VL) tests on HIV-positive samples. Genotypic analyses focused on HIV-1 pol gene. Correlates of testing recent by MAA were assessed using logistic regression model...
November 29, 2016: Scientific Reports
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